SEA - SAN

C$ 155 Find Cheap Flights from Seattle to San Diego

This is the cheapest one-way flight price found by a KAYAK user in the last 72 hours by searching for a flight from Seattle to San Diego departing on 15/7. Fares are subject to change and may not be available on all flights or dates of travel. Click the price to replicate the search for this deal.
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KAYAK searches hundreds of travel sites at once for deals on flights to San Diego

 
These are the airlines KAYAK users have selected most often from within our search results in flight searches from Seattle to San Diego, as well as popular online travel agencies
These are the airlines KAYAK users have selected most often from within our search results in flight searches from Seattle to San Diego, as well as popular online travel agencies
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Cheap Flight Deals from Seattle to San Diego (SEA-SAN)

 
Here are some of the best deals found on KAYAK recently from the most popular airlines for round-trip flights from Seattle to San Diego that are departing in the next months. While these flights were available on KAYAK in the last 72 hours, prices and availability are subject to change and deals may expire.

Recent round-trip flight deals from Seattle to San Diego

KAYAK's recommended round-trip deals from the most popular airlines that fly from Seattle to San Diego.
Discover the best prices for you by selecting your travel dates on KAYAK.
Choose your dates
Alaska Airlines Logo
11:42 a.m. - 2:30 p.m.SEA-SAN
2h 48mdirect
Alaska Airlines Logo
4:59 p.m. - 8:00 p.m.SAN-SEA
3h 01mdirect
C$ 209Alaska Airlines
Find Deal
Tue, 10 Jun - Tue, 10 Jun
Alaska Airlines Logo
7:59 p.m. - 10:44 p.m.SEA-SAN
2h 45mdirect
Alaska Airlines Logo
3:45 p.m. - 6:51 p.m.SAN-SEA
3h 06mdirect
C$ 217Alaska Airlines
Find Deal
Sat, 7 Jun - Mon, 9 Jun
Alaska Airlines Logo
11:42 a.m. - 2:30 p.m.SEA-SAN
2h 48mdirect
Alaska Airlines Logo
4:44 p.m. - 10:00 p.m.SAN-SEA
5h 16m1 stop
C$ 223Alaska Airlines
Find Deal
Tue, 10 Jun - Tue, 10 Jun
Delta Logo
10:10 a.m. - 1:00 p.m.SEA-SAN
2h 50mdirect
Delta Logo
7:15 p.m. - 10:25 p.m.SAN-SEA
3h 10mdirect
C$ 245Delta
Find Deal
Fri, 30 May - Fri, 6 Jun
United Airlines Logo
5:13 p.m. - 11:59 p.m.SEA-SAN
6h 46m1 stop
United Airlines Logo
2:30 p.m. - 9:31 p.m.SAN-SEA
7h 01m2 stops
C$ 252United Airlines
Find Deal
Tue, 13 May - Wed, 14 May
 Logo
2:00 p.m. - 8:03 p.m.SEA-SAN
6h 03m1 stop
 Logo
8:54 p.m. - 11:49 p.m.SAN-SEA
26h 55m1 stop
C$ 281
Find Deal
Fri, 16 May - Mon, 19 May
Delta Logo
7:30 a.m. - 10:20 a.m.SEA-SAN
2h 50mdirect
Delta Logo
7:15 p.m. - 10:25 p.m.SAN-SEA
3h 10mdirect
C$ 286Delta
Find Deal
Fri, 6 Jun - Fri, 13 Jun
United Airlines Logo
2:50 p.m. - 8:50 p.m.SEA-SAN
6h 00m1 stop
United Airlines Logo
1:50 p.m. - 8:56 p.m.SAN-SEA
7h 06m1 stop
C$ 317United Airlines
Find Deal
Thu, 10 Jul - Tue, 22 Jul
Hawaiian Airlines Logo
7:59 p.m. - 10:55 p.m.SEA-SAN
2h 56mdirect
Hawaiian Airlines Logo
5:05 p.m. - 10:00 p.m.SAN-SEA
4h 55m1 stop
C$ 369Hawaiian Airlines
Find Deal
Fri, 27 Jun - Sat, 5 Jul
Hawaiian Airlines Logo
9:03 p.m. - 11:59 p.m.SEA-SAN
2h 56mdirect
Hawaiian Airlines Logo
7:15 a.m. - 10:18 a.m.SAN-SEA
3h 03mdirect
C$ 397Hawaiian Airlines
Find Deal
Thu, 17 Jul - Mon, 21 Jul

Expert advice for your flight from Seattle to San Diego

 
Snippets provided in this section are AI-generated based on a summarization of KAYAK-commissioned articles. The articles are presented as-is, for general informational purposes only, and may not be up-to-date. The opinions contained in the articles are specific to the author and reflect their authentic experience, which may vary significantly from the experience of others.
KAYAK teamed up with top travel experts to share the best tips for your journey.
Airlines
Alaska Airlines

Alaska's 20-minute baggage guarantee ensures quick luggage retrieval or bonus miles for delays.


Alaska's Premium Class offers priority boarding and complimentary drinks on flights over 350 miles.

Delta

Delta's free Wi-Fi for SkyMiles members enhances connectivity on domestic flights.


Delta's Comfort Plus seats offer up to 8 cm extra legroom for added comfort.

Read more about Deltaby Stefanie Waldek
Our travel experts
Harriet Baskas

Harriet Baskas

Expert on Alaska Airlines

Harriet Baskas

Harriet Baskas

Harriet is an award-winning journalist who is happiest in an airport or an unusual museum. Her stories about airports, air travel, and the business of travel have appeared on NBC News, CNBC, USA TODAY, The Points Guy and other outlets. She is the creator of the StuckatTheAirport.com blog and the author of nine books. When not out on the road or exploring the latest airport amenities, she’s home in Seattle getting ready for the next adventure.

Read more
Stefanie Waldek

Stefanie Waldek

Expert on Delta

Stefanie Waldek

Stefanie Waldek

Stefanie Waldek is a freelance space, travel, and design writer based in Saratoga Springs, NY. Her words have appeared in Space.com, Travel + Leisure, Condé Nast Traveler, Architectural Digest, and House Beautiful, among other publications. An expert in aviation and expedition cruising, Stefanie is frequently up in the air or on the sea, likely en route to Antarctica or the Arctic.

Read more

KAYAK's insights & trends for Seattle to San Diego flights

Get data-powered insights and trends into flights from Seattle to San Diego to help you find the cheapest flights, the best time to fly and much more.

What’s the cheapest day of the week to fly from Seattle to San Diego?

The average price of all round-trip flights from Seattle to San Diego clicked on KAYAK for each day over the last 12 months.
For Seattle to San Diego, Tuesday is the cheapest day to fly on average and Saturday is the most expensive. Flying from San Diego back to Seattle, the best deals are generally found on Wednesday, with Thursday being the most expensive.

What is the cheapest month to fly from Seattle to San Diego?

To calculate monthly average prices, KAYAK takes all prices for each month over the last year for round-trip flights from Seattle to San Diego, removes the top 0.1% to account for outliers, and then takes the median of all values for each month.
The cheapest month for flights from Seattle to San Diego is September, where tickets cost C$ 258 (return) on average. On the other hand, the most expensive months are December and April, where the average cost of round-trip tickets is C$ 464 and C$ 438 respectively.

How far in advance should I book a flight from Seattle to San Diego?

To calculate weekly average prices, KAYAK takes all prices for each week before departure over the last year for round-trip flights from Seattle to San Diego, removes the top 0.1% to account for outliers, and then takes the average of all the values for each week.
To get a below average price on the flight from Seattle to San Diego, you should book around 4 weeks before departure. For the absolute cheapest price, our data suggests you should book 19 weeks before departure.

Good to know

Low season

January

High season

April

Cheapest flight

C$ 155
Best time to beat the crowds (28% less expensive on average)
Most popular time to fly (21% more expensive on average)
Flight from Seattle to San Diego

When to book flights from Seattle to San Diego

Are your dates flexible? Find out the best times to travel from Seattle to San Diego based on our flight data from the last year. Discover the cheapest month and even day to fly.
Estimated round-trip price
KAYAK looks at all historical flight data for each date to provide a predicted price for one-way trips or round-trips with a duration up to 40 days. While we try to provide actual minimum prices for each date, some prices are predictions and actual prices may differ.

FAQs for booking flights from Seattle to San Diego

  • What are some good hotels near San Diego International Airport?

    The Hilton is a stylish hotel that is less than a 15-minute drive from Balboa Park and a 16-minute drive from San Diego International Airport. The Sheraton San Diego Hotel is a modern option that is a 15-minute drive from the USS Midway Museum and a 14-minute drive from the airport.

  • Is there anywhere to smoke at San Diego International Airport?

    At this time, there are no indoor smoking rooms in the terminals of San Diego International Airport. However, there are some designated outdoor smoking zones that are placed outside of the doors of the Arrivals terminal and which are clearly marked by official airport signs.

  • What is there to do at Seattle-Tacoma International Airport?

    If you are an art enthusiast, make sure to check out the contemporary collection from SeaTac that can be found in the main terminal of Seattle-Tacoma International Airport. If you would prefer to watch a movie or TV show, head to a Digiboo self-service kiosk to rent some digital content before boarding your flight.

  • What shopping options are there at Seattle-Tacoma International Airport?

    To purchase some gifts or souvenirs, browse through the various shops that are located in Seattle-Tacoma International Airport. Chalo Seattle is a local boutique that offers a variety of regional products, while Affordable Luxuries sells clothing and accessories. There are also several Hudson News locations, in case you need to pick up any last-minute travel essentials.

  • What is the cheapest flight from Seattle to San Diego?

    In the last 3 days, the lowest price for a flight from Seattle to San Diego was C$ 112 for a one-way ticket and C$ 151 for a round-trip.

  • Which airlines offer Wi-Fi service onboard planes from Seattle to San Diego?

    Alaska Airlines, Hawaiian Airlines, Delta, American Airlines, and Aeromexico offer inflight Wi-Fi service on the Seattle to San Diego flight route.

  • Which aircraft models fly most regularly from Seattle to San Diego?

    The Boeing 737-900 Passenger/BBJ3 (winglets) is the aircraft model that flies most regularly on the Seattle to San Diego flight route.

  • Which airline alliances offer flights from Seattle to San Diego?

    oneworld, SkyTeam, and Star Alliance are the airline alliances operating flights between Seattle and San Diego, with SkyTeam being the most commonly used for this route.

  • On which days can I fly direct from Seattle to San Diego?

    There are direct flights from Seattle to San Diego on a daily basis.

  • Which is the best airline for flights from Seattle to San Diego, Alaska Airlines or Delta?

    The two airlines most popular with KAYAK users for flights from Seattle to San Diego are Alaska Airlines and Delta. With an average price for the route of C$ 334 and an overall rating of 8.0, Alaska Airlines is the most popular choice. Delta is also a great choice for the route, with an average price of C$ 304 and an overall rating of 8.0.

  • How does KAYAK find such low prices on flights from Seattle to San Diego?

    KAYAK is a travel search engine. That means we look across the web to find the best prices we can find for our users. With over 2 billion flight queries processed yearly, we are able to display a variety of prices and options on flights from Seattle to San Diego.

  • How does KAYAK's flight Price Forecast tool help me choose the right time to buy my flight ticket from Seattle to San Diego?

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to San Diego from Seattle is likely to change within 7 days, so travelers know whether to wait or book now.

  • What is the Hacker Fare option on flights from Seattle to San Diego?

    Hacker Fares allow you to combine one-way tickets in order to save you money over a traditional round-trip ticket. You could then fly to San Diego with an airline and back to Seattle with another airline.

  • What is KAYAK's "flexible dates" feature and why should I care when looking for a flight from Seattle to San Diego?

    Sometimes travel dates aren't set in stone. If your preferred travel dates have some wiggle room, flexible dates will show you all the options when flying to San Diego from Seattle up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

See more FAQs

KAYAK’s top tips for finding a cheap flight from Seattle to San Diego

  • Looking for a cheap flight? 25% of our users found flights on this route for C$ 144 or less one-way and C$ 272 or less round-trip.
  • An easy way to make your day of traveling as quick and simple as possible is to specifically search for direct flights from Seattle to San Diego. Companies such as Delta, Alaska, and United Airlines offer many daily flights between these two locations, as well as additional perks like in-flight entertainment and free snacks.
  • If you find traveling to be stressful, consider getting a massage to help you relax before your flight from Seattle to San Diego starts boarding. The Massage Bar is located near the N Gates of Seattle-Tacoma International Airport and offers a variety of different services, making it a convenient place to go in order to be pampered.
  • For those interested in freshening up after landing at San Diego International Airport, purchase an access pass for the Airspace Lounge. In addition to providing guests with private showers, towels, and toiletries, this lounge also has unlimited drinks and snacks, high-speed WiFi, and several televisions.
  • Seattle-Tacoma International Airport is home to Experience the City of Music, a program that coordinates daily live music performances throughout the airport’s Departures terminals between the hours of 9 am and 3 pm. Make sure to check the program’s event calendar to see if you will have the opportunity to catch a show before boarding your flight.
  • To refuel after a day of traveling, grab a bite to eat from one of the several restaurants in San Diego International Airport. The Bankers Hill Bar & Restaurant is an American-style choice that is located in Terminal 1, while the PGA TOUR Grill serves healthy entrees and is found in Terminal 2.
See more tips

Prefer to fly direct from Seattle to San Diego?

Find which airlines fly direct from Seattle/Tacoma Intl Airport to San Diego Airport, which days they fly and book direct flights.

Direct departures

Seattle/Tacoma Intl to San Diego

Monday

Air France,Air Tahiti Nui,Alaska Airlines, +15 more

Air France,Air Tahiti Nui, +16 more

Tuesday

Air France,Air Tahiti Nui,Alaska Airlines, +14 more

Air France,Air Tahiti Nui, +15 more

Wednesday

Air France,Air Tahiti Nui,Alaska Airlines, +15 more

Air France,Air Tahiti Nui, +16 more

Thursday

Air France,Air Tahiti Nui,Alaska Airlines, +15 more

Air France,Air Tahiti Nui, +16 more

Friday

Air France,Air Tahiti Nui,Alaska Airlines, +15 more

Air France,Air Tahiti Nui, +16 more

Saturday

Air Tahiti Nui,Alaska Airlines,American Airlines, +15 more

Air Tahiti Nui,Alaska Airlines, +16 more

Sunday

Air France,Air Tahiti Nui,Alaska Airlines, +16 more

Air France,Air Tahiti Nui, +17 more

See more nonstop flights

Direct returns

San Diego to Seattle/Tacoma Intl

Monday

Air France,Air Tahiti Nui,Alaska Airlines, +16 more

Air France,Air Tahiti Nui, +17 more

Tuesday

Air France,Air Tahiti Nui,Alaska Airlines, +13 more

Air France,Air Tahiti Nui, +14 more

Wednesday

Air France,Air Tahiti Nui,Alaska Airlines, +16 more

Air France,Air Tahiti Nui, +17 more

Thursday

Air France,Air Tahiti Nui,Alaska Airlines, +15 more

Air France,Air Tahiti Nui, +16 more

Friday

Air France,Air Tahiti Nui,Alaska Airlines, +15 more

Air France,Air Tahiti Nui, +16 more

Saturday

Air France,Air Tahiti Nui,Alaska Airlines, +16 more

Air France,Air Tahiti Nui, +17 more

Sunday

Air France,Air Tahiti Nui,Alaska Airlines, +15 more

Air France,Air Tahiti Nui, +16 more

See more nonstop flights
See more nonstop flights

Top 4 airlines serving from Seattle to San Diego

 
See real verified KAYAK customer reviews for airlines flying from Seattle to San Diego. Airline scores are aggregated from all reviews left by passengers on KAYAK after flying with an airline. KAYAK doesn’t show reviews that are older than 5 years. Learn how KAYAK collects reviews.
Need help choosing which airline to fly with from Seattle to San Diego? KAYAK airline reviews give an overall score for each airline based on loads of factors, including comfort, boarding, in-flight entertainment and more, to make your decision easier. See airline scores according to verified KAYAK customer reviews.
8.0
Alaska AirlinesOverall score based on 9911 reviews
7.9Comfort
8.5Crew
7.1Entertainment
8.2Boarding
7.1Food
Airline reviews

Flight was over an hour late, and we got notified every 15 minutes, beginning right at boarding, that it would only be 15 more minutes until we finally left about 75 minutes late. Of course, no compensation was offered.

2.0 MediocreMarian, Mar 2025SEA - PSP
Read more Alaska Airlines reviews

Flight was over an hour late, and we got notified every 15 minutes, beginning right at boarding, that it would only be 15 more minutes until we finally left about 75 minutes late. Of course, no compensation was offered.

The registration was chaotic. The kiosks didn't work for most people, and most had to do registration and receive boarding slips with a person. It took about an hour to get through he process, and I was worrying that I will be late to the flight. However, the personnel was great - courteous, professional, and was able to work through the problems.

I needed to board early and that was no problem. The snack was just ok. Alaska is an EXCELLENT airlines . . . luggage fast and easy.

Alaska Airlines needs more bag tag kiosks and bag check-in stations in Seattle. A single entry point for the bag tag kiosks would be helpful. This alleviates lines forming at each individual kiosk, which causes traffic jams for people passing through.

It was raining and cold and we had to walk outside to board the plane. And to have yo stand outside to wait in line to board. It seems they could find another way to send a few people at a time so passengers are not outside in the elements. Then to not have my luggage show up at my finally destination. Not happy with the whole experience.

I paid $49 to select my seat---6A a window seat just behind first class. When I started to get on the plane I was told that my seat had been given to someone else and I now had a middle seat. They finally gave me an aisle seat. When I told them I wanted my $49 back, I was told I would need to call alaska and fight with them to get my money back. And when i was on the flight people going by kept hitting me with their bags. I have tried calling alaska twice to talk about a refund but never got thru to the right person!

Check-in was easy, I did it from the app. Boarding was easy, the crew was great. Santa Barbara airport had a disabled plane so we had to land in Burbank to refuel. They kept us well informed, and everyone was great. A very entertaining person from the Burbank airport got on and told a few jokes.

It went very quickly even though we were late in leaving Fresno.

Like I said before the internet was shut off so there was little to do on this leg of the flight.

Finally get a snack n drinks! Just like the good ole days!

This had nothing to do with Delta… The flights were on time and flawless. The service was excellent. We purchased seats in (aisle/middle) comfort plus since this was a cross country flight. Unfortunately, the woman seated at the window was 300+ pounds and, as might be expected, covered up about a third of the middle seat also. there was absolutely nothing that Delta could have done about that… I just don’t know what the answer should be. If you purchase a seat, you should should be able to use the entire seat and not just the portion that someone else is not sitting/oozing in. Disappointing…there should be something that could be done….I'm just not sure what solution could be.

Great staff. Wifi is terrible. Signing up for skylines is a painstaking process. Had to call customer service just to get my flight itinerary and confirmation sent to me. Consistent delays. A well staffed company that is run so poorly. Upper management needs to be renewed.

The crew was wonderful and attentive. The seats near exit row were restrictive. Offer healthy snacks please

Seats are much much more comfortable than United, which is what I usually fly

Other then mechanical/ computer problem and 3.5 hours flight delay the flight was great. I guess that what happened when you fly an old airplane now a day.

If I pay extra for "comfort+" I expect leg room where I can stretch my legs. I was seated with an attendant's seat blocking my feet. Knee space was fine but my feet had less room than the non-"comfort+" seats. Also, don't go cheap on food when you have flights of 3+ hours. It's insulting.

Only one side of the heafphone jack work. Crew was friendly and helpful.

Coach seating is debilitating, neither my husband or I can walk the following day

Great. Flight departed early and arrived early. Deplaning and baggage claim ww were quick.

They separated our seats and moved us to the back of the plane. Hundreds of dollars and thousands of miles used and this was my platinum member experience.

Worst airline ever! The guy weighing my bag had his foot on the metal plate and when I called him out on it, I got this stupid little smirk. La is a scam and so is Spirit Airlines. All the flight attendants looked like they hated our flight just as much as we did.

Unclear pricing; ended up being charged an extra $52 just to get onboard

Spirit is awful. Too expensive for what you get. Stop nickel and diming.

would be great to get basic water, soda at least and stop charging for carry ons

Your crew is a representation of your Standards and Values. The crew from Seattle to LAX, was very disappointing. The crew was more interested in hanging out at the lobby area. Talking, laughing loudly and eating all the snacks. They did not do regular rounds to see if customers needed anything. This was a huge disappointment. I will no longer be flying with your airlines moving forward.

- flight attendants not very friendly. - Paid for WiFi and plane didn’t have it working , never got a refund.

We got to fly on the new airplane. Much better as it’s roomier and cleaner than before. Most Importantly it’s much more comfortable. I still can’t move the seat back but the extra space made up for it. I didn’t taste the food or drinks because they charge for everything so I didn’t bother. I didn’t experience the entertainment because I downloaded my own movies on my phone. The crew was great. The flight itself was smooth . No complaints.

I was comfortable because I upgraded. I would not have been comfortable in economy. It was a short flight so there was limited food service and no inflight entertainment.

I thought since I upgraded my seat I would get some perks. Free water, free snacks. Free carry on luggage.

It’s ridiculous to pay for carry-on luggage. I also wasn’t given an option to specify I have carry on bag at time of ticket purchase. I also could not specify I have carry on luggage at time of online check-in.

Not very good. Paid in excess of $400 for assigned seating for my family and that was not provided. I want that money back.

The seats were hard molded plastic covered in plastic vinyl. And the scam to charge people extra to sit together. Don’t they know we can just ask someone to trade seats. And watching the staff separate young children from parents… super classy. We had to guilt them into offering up our seats. This companies policies suck. Don’t give them your money.

The seats were awful, hard plastic covered in sheet vinyl. The airline tries to scam you into paying extra to get seat together when the flight wasn’t full. They were going to separate a family with young children but my wife who had a row to herself gave up her seat so the young mom could be with her young boys. I’m never giving this airline my money again.

It was a short flight so no food or entertainment….

Seats are uncomfortable but price is good. Guess I can put up with misery for four hours.

I’ve never traveled on Frontier before. If you want basic, no frills, friendly service at great prices then give them a fly!

Cancelled and declined to find alternatives Earlier flight is 2 days later Sent the cancellation notification very late, wish I knew earlier would have stayed to watch the Miami open final game Very disappointing service

i was denied boarding, even though i had an assigned seat, checked in on line and was at airport early. Then they refused to fully refund the the fair and replacement fair because they claimed it was "no show/denied boarding". I will never fly this airline again

Everything went as planned. Crew was great. Seats were still not that comfortable.

No frills for sure. No gate announcements about flight delay, not even water to drink on the flight.

Everything you need to know for your flight from Seattle to San Diego

Information on your arrival and departure airports

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