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SEA - BWI

Find cheap flights from Seattle to Baltimore

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

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

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

KAYAK's recommended round-trip deals from the most popular airlines that fly from Seattle to Baltimore.
Discover the best prices for you by selecting your travel dates on KAYAK.
Choose your dates
Alaska Airlines Logo
SEA-BWI
5h 00mdirect
Alaska Airlines Logo
BWI-SEA
5h 39mdirect
Alaska Airlines
Find Deal
Southwest Logo
SEA-BWI
5h 00mdirect
Southwest Logo
BWI-SEA
5h 50mdirect
Southwest
Find Deal
Finnair Logo
SEA-BWI
5h 06mdirect
Finnair Logo
BWI-SEA
5h 39mdirect
Finnair
Find Deal
Hawaiian Airlines Logo
SEA-BWI
5h 00mdirect
Hawaiian Airlines Logo
BWI-SEA
5h 39mdirect
Hawaiian Airlines
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Air Tahiti Nui Logo
SEA-BWI
5h 00mdirect
Air Tahiti Nui Logo
BWI-SEA
5h 39mdirect
Air Tahiti Nui
Find Deal

Expert advice for your flight from Seattle to Baltimore

 
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.
Airports
SEA

Use SEA Spot Saver for expedited security screening from 4 a.m. to 10 p.m. at Checkpoints 2, 3, and 5.

Read more about SEAby Harriet Baskas
BWI

Take the light rail from BWI to downtown Baltimore for an affordable and convenient option.

Read more about BWIby Harriet Baskas
Our travel experts
Harriet Baskas

Harriet Baskas

Expert on BWI 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

KAYAK's insights & trends for Seattle to Baltimore flights

Get data-powered insights and trends into flights from Seattle to Baltimore 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 Baltimore?

The average price of all round-trip flights from Seattle to Baltimore clicked on KAYAK for each day over the last 12 months.
If you are looking for a flight deal from Seattle to Baltimore, look for departures on Wednesdays and avoid leaving on a Monday, as it's usually the priciest day. When flying back from Baltimore, Tuesday is the cheapest day to fly and Friday is the most expensive.

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

To calculate monthly average prices, KAYAK takes all prices for each month over the last year for round-trip flights from Seattle to Baltimore, 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 Baltimore is October, where tickets cost C$ 455 (return) on average. On the other hand, the most expensive months are December and June, where the average cost of round-trip tickets is C$ 728 and C$ 647 respectively.

Can I save money by flying with a layover from Seattle to Baltimore?

The average round-trip price for all non-stop flights, flights with one layover, and flights with two layovers for the route found by users searching on KAYAK in the last 2 weeks.
No, with an average price for the route of C$ 332, prices are generally cheapest when you fly direct.

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

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 Baltimore, 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 Baltimore, you should book around 4 weeks before departure. For the absolute cheapest price, our data suggests you should book 18 weeks before departure.
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Good to know

Low season

February

High season

May
Best time to beat the crowds (1% less expensive on average)
Most popular time to fly (3% more expensive on average)

When to book flights from Seattle to Baltimore

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

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

    Alaska Airlines, Hawaiian Airlines, Aeromexico, and JetBlue offer inflight Wi-Fi service on the Seattle to Baltimore flight route.

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

    The Boeing 737 MAX 9 is the aircraft model that flies most regularly on the Seattle to Baltimore flight route.

  • Which airline alliances offer flights from Seattle to Baltimore?

    oneworld is the only airline alliance operating flights between Seattle and Baltimore.

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

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

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

    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 Baltimore.

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

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

    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 Baltimore 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 Baltimore?

    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 Baltimore from Seattle up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

See more FAQs

Prefer to fly direct from Seattle to Baltimore?

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

Direct departures

Seattle/Tacoma Intl to Baltimore/Washington

Monday

Air Tahiti Nui,Alaska Airlines,Finnair, +2 more

Air Tahiti Nui,Alaska Airlines, +3 more

Tuesday

Air Tahiti Nui,Alaska Airlines,Hawaiian Airlines, +1 more

Air Tahiti Nui,Alaska Airlines, +2 more

Wednesday

Air Tahiti Nui,Alaska Airlines,Finnair, +2 more

Air Tahiti Nui,Alaska Airlines, +3 more

Thursday

Air Tahiti Nui,Alaska Airlines,Finnair, +2 more

Air Tahiti Nui,Alaska Airlines, +3 more

Friday

Air Tahiti Nui,Alaska Airlines,Hawaiian Airlines, +1 more

Air Tahiti Nui,Alaska Airlines, +2 more

Saturday

Air Tahiti Nui,Alaska Airlines,Finnair, +2 more

Air Tahiti Nui,Alaska Airlines, +3 more

Sunday

Air Tahiti Nui,Alaska Airlines,Finnair, +2 more

Air Tahiti Nui,Alaska Airlines, +3 more

See more nonstop flights

Direct returns

Baltimore/Washington to Seattle/Tacoma Intl

Monday

Air Tahiti Nui,Alaska Airlines,Finnair, +2 more

Air Tahiti Nui,Alaska Airlines, +3 more

Tuesday

Air Tahiti Nui,Alaska Airlines,Hawaiian Airlines, +1 more

Air Tahiti Nui,Alaska Airlines, +2 more

Wednesday

Air Tahiti Nui,Alaska Airlines,Finnair, +2 more

Air Tahiti Nui,Alaska Airlines, +3 more

Thursday

Air Tahiti Nui,Alaska Airlines,Finnair, +2 more

Air Tahiti Nui,Alaska Airlines, +3 more

Friday

Air Tahiti Nui,Alaska Airlines,Hawaiian Airlines, +1 more

Air Tahiti Nui,Alaska Airlines, +2 more

Saturday

Air Tahiti Nui,Alaska Airlines,Finnair, +2 more

Air Tahiti Nui,Alaska Airlines, +3 more

Sunday

Air Tahiti Nui,Alaska Airlines,Finnair, +2 more

Air Tahiti Nui,Alaska Airlines, +3 more

See more nonstop flights
See more nonstop flights

Top airline flying from Seattle to Baltimore

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

An uneventful flight is a good experience although one of the pilots gauges wasn’t working right so we had a half hour delay—no one can foresee that.

10.0 ExcellentAldo, Apr 2025SEA - TPA
Read more Alaska Airlines reviews

An uneventful flight is a good experience although one of the pilots gauges wasn’t working right so we had a half hour delay—no one can foresee that.

Plane was delayed and got me in past bedtime. But more importantly, my tsa precheck number wasn’t on my ticket so had to deal with the general line. Oh well, guess the delay helped that situation.

It was as good as flying can be, which is still very uncomfortable. Clean new aircraft, great crew.

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.

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.

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

Information on your arrival and departure airports

Baltimore (BWI)
Seattle (SEA)

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