SEA - CUN

C$ 243 Find Cheap Flights from Seattle to Cancún

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 Cancún departing on 1/5. 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.
1 adult

KAYAK searches hundreds of travel sites at once for deals on flights to Cancún

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

 
Here are some of the best deals found on KAYAK recently from the most popular airlines for round-trip flights from Seattle to Cancún 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 Cancún

KAYAK's recommended round-trip deals from the most popular airlines that fly from Seattle to Cancún.
Discover the best prices for you by selecting your travel dates on KAYAK.
Choose your dates
Spirit Airlines Logo
3:20 p.m. - 1:08 p.m.SEA-CUN
19h 48m2 stops
Spirit Airlines Logo
10:33 a.m. - 12:10 a.m.CUN-SEA
15h 37m2 stops
C$ 442Spirit Airlines
Find Deal
Sat, 10 May - Sat, 17 May
 Logo
5:30 p.m. - 1:08 p.m.SEA-CUN
17h 38m1 stop
 Logo
3:56 p.m. - 12:44 a.m.CUN-SEA
10h 48m1 stop
C$ 461
Find Deal
Mon, 12 May - Thu, 15 May
Delta Logo
7:10 a.m. - 2:55 p.m.SEA-CUN
5h 45mdirect
Delta Logo
4:10 p.m. - 8:51 p.m.CUN-SEA
6h 41mdirect
C$ 575Delta
Find Deal
Tue, 29 Apr - Fri, 9 May
Alaska Airlines Logo
8:15 a.m. - 4:19 p.m.SEA-CUN
6h 04mdirect
Alaska Airlines Logo
4:25 p.m. - 8:56 a.m.CUN-SEA
18h 31m1 stop
C$ 599Alaska Airlines
Find Deal
Wed, 14 May - Thu, 15 May
Alaska Airlines Logo
9:16 p.m. - 3:01 p.m.SEA-CUN
15h 45m1 stop
Alaska Airlines Logo
4:25 p.m. - 8:56 a.m.CUN-SEA
18h 31m1 stop
C$ 606Alaska Airlines
Find Deal
Mon, 5 May - Thu, 15 May
Delta Logo
7:10 a.m. - 2:55 p.m.SEA-CUN
5h 45mdirect
Delta Logo
4:05 p.m. - 8:51 p.m.CUN-SEA
6h 46mdirect
C$ 618Delta
Find Deal
Fri, 25 Apr - Wed, 30 Apr
United Airlines Logo
5:15 a.m. - 4:45 p.m.SEA-CUN
9h 30m1 stop
United Airlines Logo
4:15 p.m. - 12:59 a.m.CUN-SEA
10h 44m1 stop
C$ 619United Airlines
Find Deal
Wed, 14 May - Wed, 28 May
United Airlines Logo
6:15 a.m. - 7:20 p.m.SEA-CUN
11h 05m2 stops
United Airlines Logo
5:01 p.m. - 12:59 a.m.CUN-SEA
9h 58m1 stop
C$ 625United Airlines
Find Deal
Wed, 14 May - Wed, 28 May
Aeromexico Logo
7:12 a.m. - 3:00 p.m.SEA-CUN
5h 48mdirect
Aeromexico Logo
4:15 p.m. - 11:59 p.m.CUN-SEA
9h 44m1 stop
C$ 732Aeromexico
Find Deal
Sun, 11 May - Wed, 21 May
Aeromexico Logo
7:10 a.m. - 2:55 p.m.SEA-CUN
5h 45mdirect
Aeromexico Logo
8:31 a.m. - 10:51 p.m.CUN-SEA
16h 20m2 stops
C$ 734Aeromexico
Find Deal
Tue, 29 Apr - Mon, 12 May

Expert advice for your flight from Seattle to Cancún

 
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 Airlines offers a 20-minute baggage guarantee for timely luggage delivery.


Alaska Airlines' Wine Flies Free program allows free wine check-in from select US airports.

Aeromexico

AM Plus offers priority check-in, boarding, and luggage with discounted lounge access.


Aeromexico's Wi-Fi is fast enough for streaming and offers free text messaging.

Delta

Delta offers free Wi-Fi for SkyMiles members on domestic flights.


Delta's Sky Priority check-in serves premium cabin and elite status passengers.

Read more about Deltaby Stefanie Waldek
Airports
SEA

Use the SEA Spot Saver for expedited security screening. Book online or via the flySEA app for a smoother departure.

Read more about SEAby Harriet Baskas
CUN

Expect quick immigration at CUN due to recent renovations. Automated passport checks reduce wait times to 5–15 minutes.

Read more about CUNby Brandon Schultz
Our travel experts
Harriet Baskas

Harriet Baskas

Expert on Alaska Airlines and SEA

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
Marisa Garcia

Marisa Garcia

Expert on Aeromexico

Marisa Garcia

Marisa Garcia

Marisa knows planes inside and out, spending 16 years working on aircraft in hangars at airports around the world. She is an aviation industry expert, specialized in airline interiors and regulations. Ten years ago, she pivoted to journalism. She shares her insights in leading aviation, travel, and business publications and on her site FlightChic.

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
Brandon Schultz

Brandon Schultz

Expert on CUN

Brandon Schultz

Brandon Schultz

Brandon travels every week and makes friends with stray cats wherever he goes. Dogs, too... he once brought one home to the US from the Amalfi Coast. He’s written 6 books, visited 6 continents (still waiting on Antarctica), and would eat ice cream 6 times a day if he could. He lives in Brooklyn, New York, with his partner and three cats.

Read more

KAYAK's insights & trends for Seattle to Cancún flights

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

What is the cheapest month to fly from Seattle to Cancún?

To calculate monthly average prices, KAYAK takes all prices for each month over the last year for round-trip flights from Seattle to Cancún, 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 Cancún is September, where tickets cost C$ 688 (return) on average. On the other hand, the most expensive months are December and February, where the average cost of round-trip tickets is C$ 1,041 and C$ 931 respectively.

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

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 Cancún, 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 Cancún, you should book around 1 week before departure. For the absolute cheapest price, our data suggests you should book 25 weeks before departure.

Good to know

Low season

September

High season

April

Cheapest flight

C$ 243
Best time to beat the crowds (18% less expensive on average)
Most popular time to fly (7% more expensive on average)
Flight from Seattle to Cancun

When to book flights from Seattle to Cancún

Are your dates flexible? Find out the best times to travel from Seattle to Cancún 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 Cancun

  • What is the cheapest flight from Seattle to Cancún?

    In the last 3 days, the lowest price for a flight from Seattle to Cancún was C$ 170 for a one-way ticket and C$ 309 for a round-trip.

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

    Aeromexico, Alaska Airlines, Delta, Air Canada, and AeroMexico Connect offer inflight Wi-Fi service on the Seattle to Cancun flight route.

  • Which aircraft models fly most regularly from Seattle to Cancun?

    The Airbus A321neo is the aircraft model that flies most regularly on the Seattle to Cancun flight route.

  • Which airline alliances offer flights from Seattle to Cancun?

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

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

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

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

    The two airlines most popular with KAYAK users for flights from Seattle to Cancún are Alaska Airlines and Delta. With an average price for the route of C$ 778 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$ 736 and an overall rating of 8.0.

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

    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 Cancun.

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

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to Cancun 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 Cancun?

    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 Cancun 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 Cancun?

    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 Cancun 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 Cancún

  • Looking for a cheap flight? 25% of our users found flights on this route for C$ 795 or less round-trip.

Prefer to fly direct from Seattle to Cancun?

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

Direct departures

Seattle/Tacoma Intl to Cancun

Monday

Aeromexico,Alaska Airlines,Delta, +2 more

Aeromexico,Alaska Airlines, +3 more

Tuesday

Aeromexico,Alaska Airlines,Delta, +2 more

Aeromexico,Alaska Airlines, +3 more

Wednesday

Aeromexico,Alaska Airlines,Delta, +2 more

Aeromexico,Alaska Airlines, +3 more

Thursday

Aeromexico,Alaska Airlines,Delta, +2 more

Aeromexico,Alaska Airlines, +3 more

Friday

Aeromexico,Alaska Airlines,Delta, +2 more

Aeromexico,Alaska Airlines, +3 more

Saturday

Aeromexico,Alaska Airlines,Delta, +2 more

Aeromexico,Alaska Airlines, +3 more

Sunday

Aeromexico,Alaska Airlines,Delta, +2 more

Aeromexico,Alaska Airlines, +3 more

See more nonstop flights

Direct returns

Cancun to Seattle/Tacoma Intl

Monday

Aeromexico,Alaska Airlines,Delta, +2 more

Aeromexico,Alaska Airlines, +3 more

Tuesday

Aeromexico,Alaska Airlines,Delta, +2 more

Aeromexico,Alaska Airlines, +3 more

Wednesday

Aeromexico,Alaska Airlines,Delta, +2 more

Aeromexico,Alaska Airlines, +3 more

Thursday

Aeromexico,Alaska Airlines,Delta, +2 more

Aeromexico,Alaska Airlines, +3 more

Friday

Aeromexico,Alaska Airlines,Delta, +2 more

Aeromexico,Alaska Airlines, +3 more

Saturday

Aeromexico,Alaska Airlines,Delta, +2 more

Aeromexico,Alaska Airlines, +3 more

Sunday

Aeromexico,Alaska Airlines,Delta, +2 more

Aeromexico,Alaska Airlines, +3 more

See more nonstop flights
See more nonstop flights

Top 4 airlines serving from Seattle to Cancún

 
See real verified KAYAK customer reviews for airlines flying from Seattle to Cancún. 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 Cancún? 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 9833 reviews
7.1Food
7.9Comfort
8.2Boarding
7.1Entertainment
8.5Crew
Airline reviews

The second leg of my trip left without me despite being my inbound transfer only a few minutes late. My friends told the gate agent and they closed the doors and left early anyway. Then they tried to rebook me on a flight SIX hours later which only changed when I got a supervisor to make it 4 hours later. The gate agent was nasty, unhelpful, and walked away from me.

2.0 MediocreAnonymous, Apr 2025SEA - YVR
Read more Alaska Airlines reviews

The second leg of my trip left without me despite being my inbound transfer only a few minutes late. My friends told the gate agent and they closed the doors and left early anyway. Then they tried to rebook me on a flight SIX hours later which only changed when I got a supervisor to make it 4 hours later. The gate agent was nasty, unhelpful, and walked away from me.

Everything was good. The flight attendants were great. I was disappointed that there wasn’t any screens on the back of the seats to watch movies, tv, etc. I only had my phone to watch movies on.

Well to start the crew is Seattle told me my luggage would go right thru to Ottawa. Not so before landing we were told to pick up luggage at carousel 8. On landing I asked and was told to pick it up & take it to the conveyer to be sent to Porter. Staff said Alaska always says that but no it doesn’t happen. As for Porter they said the flight would be a bit rough, so they offered a free wine or beer. Only snacks were provided on each flight.

Flight delayed due to engine issue. For 3+ hours still not on flight

Could have had more of a beverage selection than water and apple juice.

They only had one flight to my destination for the entire day. Six hour layover. Coming from their sister airline we didn't have any boarding grouping on our boarding tickets. Had to ask where we were within the grouping.

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.

Just in first class they offer blanquets, for main cabin there was no blanquets even if I would buy them

The flight was delayed and then it was very short. The crew was nice. The seats weren't as comfortable on this particular craft.

No food, just a snack on a Seattle to Boston flight? VERY chintzy.

Simply outstanding. Their new lounge for Delta One customers is a cut above the rest.

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

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.

Free Wi-Fi is good. That’s all - food mediocre, unfriendly crew, poor communication after trying to file a claim for my lost bag, which Delta didn’t even know was lost until I told them.

Most of my discomfort was going through TSA. However, the Delta seats had inadequate leg room and I tried my very best to connect to the wi-fi and it was a cumbersome process that finally gave me the info that I needed to sign in AFTER I had completed the flight...Why make it so difficult to use? That said I really really appreciate the pilot taking a little extra time to avoid a bad storm area and both landings in Atlanta and Orlando were flawless to my delight!!!

Bottom seat cushion is almost non existent. Very uncomfortable seat.

Typical flying experience in the US. Nothing particularly good or bad.

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

It was NOT pleasant. Started from checking our luggage to the last time getting off the plane. The crew was not friendly, the food was horrible and the seats were too close to each other that I got a bruise on my knee.

Lousy No wheelchair. As normal at Atlanta Cheap airline Cheap aero plane. - Neither entertainment nor food on a 5 hour saga

The airplane was an old airplane, seats were very uncomfortable and very little space, they changed my seat and that was no option to get back into my seat even when I was traveling a senior who required assistance.

This is not a low cost airline. Stop acting like o e.

Aeromexico crew made me check my hand luggage in the door of the plane. As soon as I reach Mexico City, I notice that my luggage was opened and 8 games of Nintendo Switch were stolen (700 dllrs value aprox) (the console was there) but the games were stolen. I am very dissapointed of Aeromexico and all the crew. Instead of being a good trip, It was a sad trip

Ok. But we arrived to a remote terminal which meant that a bus had to take us to the terminal building

Old aircraft the audio of the entertainment dosent work Dirty seats

The plane was so outdated, that it made it uncomfortable. The temperature was hot during the whole flight

Happy attentive flight crew. All in all good flight the night flight works well. Getting into Mexico City early so you don't get caught up it all the immigration and custom ques, additionally, this helps when exiting the airport and crossing the city to your final destination. All works very well and would do it again

Some entertainment and food/snack service would have been nice

All the pessengers should be wait in a line útil the creo and piloto are arrived.

The gate was too far away for the connecting flight

They switched out gate from terminal 1 to terminal two ten minutes before boarding. So we had to make a 20 min crazy fast walk to a different terminal. Then we boarded the plane and waited for over 40 minutes until push back. Brutal

Compared with other carriers business class for an overnight was not worth the extra expense.

Seats were comfortable. It’s was so cold and very uncomfortable. I paid 2000 miles for wifi service that was choppy the whole flight. Would like to be reimbursed for my miles Food was so disappointing. Three cold and terrible meals for $3000 round trip. This needs to be better.

Generally good. The aisles have gotten narrower which can slow down boarding. Flight crew was great! Healthier complimentary snacks would be appreciated. Due to earthquake in San Francisco we had to circle in air space for a bit but then had a smooth landing. I laud the flight crew for their patience ;)

Easy to board. Flight was super crowded though so I didn't sleep well on that cross country red-eye flight. The aisles seem ot have gotten narrower and the seat smaller whn luggage and people are getting bigger so it would be AWESOME to have more space and breathing room in general ;)

Excellent, professional, actually on time which is rare for late flights. Decent food. I love the new neck pillows! Nice, simple upgrade from the old ones I wasn't sure where to put. I wish they would allow more time for rest. It's a red eye 7 hour flight and meal service was about 3 hours.

We boarded but then sat there waiting on some missed connection people to get on so we sat for about 15 minutes for that. Then we sat again because the passenger manifest was wrong and they had to figure it out before we could leave. That took about another 20 minutes or so. The crew was working hard to figure it out so it’s not their fault. It ended up being a system glitch where someone was upgraded to first class while another person was also in the same seat and it just created a mess that took a little while to figure out. They literally went to every person on the plane asking their names to see who was sitting in the wrong seat. I also hate the entertainment that must be watched on your phone or tablet. Just give us setback screens. It’s so much better. Almost every Delta flight has this now and it is so nice to have them. The crew did a great job. I have no complaints from them. They were very hard working, even with the mishap and a disgruntled passenger.

We were delayed in Toronto on the tarmac for THREE hours with no clear indication as to why except that it was not a safety hazard. Pilot did apologize more than once but even he was unable to explain why exactly we were delayed. I overheard the stewards saying that the captain was very frustrated with the situation as well because he was not able to explain why except it had something to do with water supply or system on the aircraft and now we needed to wait for an engineer to approve the aircraft for flight. It was very frustrating and distressing as a passenger and we should have been given complimentary meals at the very least.

Flight was cramped with every seat taken. The food was fine, nothing crazy to write home about. The plane felt dated and needing some TLC, the button for the window shade didn't work and there were no AC outlets to use. When communicating with staff all except one nice lady never seemed happy to help me almost like I was bothering them when asked for things like a glass of water or a snack. The flight was overall fine. It did what was needed which is get me from point A to point B. But it certainly was not special. I don't expect much in economy but I believe economy on a host of other airlines is more memorable and better experience.

Everything you need to know for your flight from Seattle to Cancún

Information on your arrival and departure airports

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