SEA - BWI

$134 Find Cheap Flights from Seattle to Baltimore

1 adult
1 adult, Economy

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.
These are the airlines KAYAK users have selected most often from within our search results in flight searches from Seattle to Baltimore.
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Booking Insights
Expert advice

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 original 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 the SEA Spot Saver for expedited security screening. Book online or via the flySEA app for free access to dedicated lanes.

Read more about SEAby Harriet Baskas
BWI

Take the free shuttle from BWI to the Amtrak/MARC station for easy access to DC and Baltimore.

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
Booking Insights

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.

Find cheap flights to Baltimore
Find cheap flights to Baltimore

Planning a trip from Seattle to Baltimore? KAYAK’s data-powered insights will help you find cheap flights. Learn the best time to fly, how early to book your ticket, and other tips to secure great prices.

What is the most popular layover airport when flying from Seattle to Baltimore?

Percentage of 1-stop round-trip flights from Seattle to Baltimore chosen by KAYAK users via each layover airport in the last 12 months (only includes trips with the same layover airport on both legs).

Detroit (DTW) is the top choice – 28% of KAYAK users who clicked on 1-stop flights from Seattle to Baltimore picked an itinerary connecting there.

What is the cheapest layover airport when flying from Seattle to Baltimore?

Average round-trip price for 1-stop flights from Seattle to Baltimore clicked by KAYAK users in the last 12 months (only includes trips with the same layover airport on both legs).

Flights via Las Vegas (LAS) offer the most affordable fares, with an average round-trip price of $291.

Which layover airport offers the shortest total travel time from Seattle to Baltimore?

Shortest average total travel time for 1-stop one-way flights from Seattle to Baltimore via different layover airports, based on KAYAK user data from the last 12 months.

Consider flying via Chicago (MDW) for the shortest journey. The average one-way travel time for flights connecting there is 7h 23m.

Which layover airport has the quickest connection when flying from Seattle to Baltimore?

Average layover duration at different layover airports for 1-stop one-way flights from Seattle to Baltimore, based on KAYAK user data from the last 12 months.

If you prefer a quick connection, Charlotte (CLT) often has the shortest layovers from Seattle to Baltimore, with an average of 0h 56m.

Good to know

Low seasonFebruary
Cheapest flight$134
Best time to beat the crowds with an average 3% drop in price.
Most popular time to fly with an average 30% increase in price.
Flight from Seattle to Baltimore

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.
  • How far is downtown Baltimore from BWI airport?

    Downtown Baltimore is roughly 10 miles from BWI airport. There are multiple ways through which you can go from the airport to the city center including metro, taxi, and rental cars. The cheapest mode would be taking the blue-line metro towards Hunt Valley and the drop-off at the station on Lexington Street. A more convenient alternative would be a taxi or rental car. They are both easily available at the airport and will drop you at any destination in Baltimore.

  • Are there any lounges at SEA airport?

    There are about nine lounges at Seattle-Tacoma International Airport where you can hang out while waiting to board your flight. Out of the nine lounges, five have an affiliation to an airline and they include Alaska Airlines, which has three lounges, and Delta and United Airlines, each with one lounge. On top of these five lounges, there is a Centurion Lounge in Concourse B, The Club at SEA in the central terminal and south satellite, and lastly the USO Lounge which is open to active military personnel and their close family.

  • How do I make my flight from Seattle to Baltimore more sustainable?

    While flying may not be a sustainable way to travel, it is unavoidable at times. This is why we need to make our flights as eco-friendly as possible to reduce the impact on the environment. One way to do so would be to book a direct flight instead of two connecting flights. Connecting flights are usually longer and result in more carbon emissions.

  • Where are the pet relief areas at BWI airport?

    If you’re traveling with a pet through BWI airport, you should keep them in their carriers at all times except when using the pet relief areas. The pet relief areas at this airport can be found at various points both before and after security. The most conveniently located ones for arriving passengers can be found near the hourly garage parking and at the Concourse D and E connector.

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

  • Looking for a cheap flight? 25% of our users found flights on this route for $223 or less one-way and $328 or less round-trip.
  • When flying from Seattle-Tacoma International Airport (SEA), ensure you arrive at the airport at least 3h before your departure time. That should give you enough time to go through the security lines with ease.
  • To get wheelchair services at Baltimore/Washington International Thurgood Marshall Airport (BWI) you should inform your airline carrier at least 48h before your flight is supposed to take off. That gives the airport officials ample time to make all the necessary arrangements.
  • When flying out of SEA airport, you should consider staying at the Seattle Airport Marriott. The hotel is located inside the airport, putting you less than 5min away from the main terminal. Additionally, the hotel eliminates the hectic commute to the airport that most people have to deal with.
  • If you plan on leaving your car at SEA airport, check out the off-site parking options. They are usually cheaper than the parking lots inside the airport. On certain occasions, you could end up paying up to 50% less.
  • There are several rental car companies operating at BWI airport including highly-rated names such as Thrifty, Budget, Hertz, and Enterprise. They are all located at the airport rental car facility which you can access via a shuttle from the airport terminal.

Prefer to fly direct from Seattle to Baltimore?

 
Direct data is based off flight results for the next 60 days. Find direct flights from all airlines flying direct from Seattle/Tacoma Intl to Baltimore/Washington.
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, Hawaiian Airlines, +1 more

Air Tahiti Nui, Alaska Airlines, +2 more

Tuesday

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

Air Tahiti Nui, Alaska Airlines, +2 more

Wednesday

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

Air Tahiti Nui, Alaska Airlines, +2 more

Thursday

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

Air Tahiti Nui, Alaska Airlines, +2 more

Friday

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

Air Tahiti Nui, Alaska Airlines, +2 more

Saturday

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

Air Tahiti Nui, Alaska Airlines, +2 more

Sunday

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

Air Tahiti Nui, Alaska Airlines, +2 more

See more direct flights

Direct returns

Baltimore/Washington to Seattle/Tacoma Intl

Monday

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

Air Tahiti Nui, Alaska Airlines, +2 more

Tuesday

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

Air Tahiti Nui, Alaska Airlines, +2 more

Wednesday

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

Air Tahiti Nui, Alaska Airlines, +2 more

Thursday

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

Air Tahiti Nui, Alaska Airlines, +2 more

Friday

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

Air Tahiti Nui, Alaska Airlines, +2 more

Saturday

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

Air Tahiti Nui, Alaska Airlines, +2 more

Sunday

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

Air Tahiti Nui, Alaska Airlines, +2 more

See more direct flights

Reviews of the top 5 airlines serving 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 10000 reviews
7.0Entertainment
7.8Comfort
8.5Crew
8.1Boarding
7.1Food
Airline reviews

Agent boarding us in San Diego lectured me on showing up on time for the flight, and said that if I had been three minutes later, he would have denied myself and my wife boarding. Our trusted traveler numbers were not in the system, even though I entered them when I bought the tickets. Our food orders were not in the system, even though I entered them prior to the flight. My wife requires a wheelchair, and that was delayed on both flights.

4.0 OkayAnonymous, Aug 2025SEA - SAN
Read more Alaska Airlines reviews

Agent boarding us in San Diego lectured me on showing up on time for the flight, and said that if I had been three minutes later, he would have denied myself and my wife boarding. Our trusted traveler numbers were not in the system, even though I entered them when I bought the tickets. Our food orders were not in the system, even though I entered them prior to the flight. My wife requires a wheelchair, and that was delayed on both flights.

Why was I charged for a glass of wine on one flight and not on another? Why no movie or TVs? It was a long flight.

I liked that it didn't take 10 hours to drive here. Super short trip!

Wheelchair assistance was provided in Seattle and was very gratefully accepted. Thank you to the Alaska staff.

I payed for a window seat and was assigned the middle seat. The window seat just so happened to be open. Which made the ride alot more comfortable. I think I should get what I pay for without having to buy extra fight protection. If I pay for it first that should be the end of that seats history because it's now spoken for. That alone might make me think twice about using this again

We were flying 1st class for a special occasion. This was a Hawaiian airlines flight. It was exceptional. Very comfortable seats and space. Extremely attentive crew. Food was great for airline food. They provided tablets to watch and full headphones to listen. This was the best airline experience I have had in decades.

Didn't care for the crowding at the gate area at SEA TAC. Not a fault of the airline.

Loved the staff ease of flying snacks and free movies and WiFi

you could have gotten me there on the day I was supposed to be there, not a day later. Paid for 3 nights at a VRBO and got to spend only 2 nights there.

Flight crew and gate staff were very polite and professional. They were very helpful and made my trip smooth and trouble free

AC sub par. WiFi not working correctly. Ac sucked. Seats very narrow.

Near 4 hour flight with only 1 service. Had to use call button to request water. Internet and power not working until into flight. Internet would stop working during flight.

Southwest's seats are the least comfortable I have ever sat in.

The cabin was quiet for the redeye flight. The area was clean. The staff was great. The 787 Max was in good condition. Drawbacks were that the seat widths were tight for some passengers. The seat padding was at best average and for a long flight uncomfortable.

Southwest like most American domestic airlines, is a mediocre airline. But it is among the cheapest. Oh well.

My flight was delayed 50 minutes and we were rushed to board to then sit for 15 minutes until the pilot arrived. Unacceptable since we could have waited to board. Also the delayed flight was updated AFTER we boarded to more than the 10 minutes as originally stated.

Other than a bit of a delay, everything was good. Again, the boarding process and picking seats is the only thing I don't enjoy.

If we are going to have to pay for luggage, make it easier to do. Put something on the app during check-in so I don't need to do it at the kiosk. I've done it twice recently and I ended up having to pay at the desk because something went wrong at the kiosk in Tampa.

southwest just starting charging for luggage. hadnt realized it until it was too late. now out $70 when i couldve bought a carry on if i wouldve known. free bags was one of the only reasons i chose southwest over another airline (the other being no assigned seats, which is apparently also being changed). stupid business decision. wont be flying southwest anymore.

The quality of Southwest Airlines continues to degrade each time I fly with them. If it were not for the free luggage, I would probably choose another airline. Their prices are a little bit competitive, but way too high for the quality of the service. Southwest is not unique in this way. Domestic flight in the United States of America has continued to be a lower and lower quality product. Very sad when you compare the quality of domestic airlines to that of many international airlines around the world.

This route with Delta always has delays or is cancelled. Aircrafts seem smaller and older. I fly Delta quite a bit - haven’t had issues with the international flights. But this route has always been the troublesome one

Three seats in first class were broken and while they were able to still acommodate us it was looking very touch and go and they had others they could not acommodate

Mechanic delay in addition to a 2 hour change in takeoff time was frustrating.

Delayed due to thunderstorms and no in-flight service due to rough weather — both of which are out of Delta’s control. Flight was good overall.

The flight attendants in SLC were rude. I arrived 40 minutes early to gate. Ticket said I needed check in for seat assignments and tried check in and attendants said they weren’t doing it. And proceeded to never call me to give me a ticket so when time to board I received the very last seat. Please relay to employees to do their job better..,

On this flight I felt the food offering was not as complete as on previous flights. The tomato salad was a bit off and there was nothing additional such a bread or butter. The breakfast was only one option, so you either ate what they had or ate nothing. The crew was efficient, but most seemed frustrated throughout the flight. The flight arrived early and was obstacle-free, so I’m overall quite happy, but the shine in the rest of the experience just wasn’t there.

The seats got pretty uncomfortable pretty fast. The armrests are bigger than on other planes, so I had less room in the actual seat. My butt hurt by the end of the flight. :/ comfort was the primary issue. The crew were fantastic!

I believe that a four-hour trip should have a meal. Delta had none.

Great flight with Delta! Boarding was quick and easy, the amenities were solid, and the plane was in great shape. The flight attendants had a fun, lively energy while staying professional. All in all, a smooth trip — even managed to catch up on some rest. Thanks, Delta!

I was uncomfortably cold on the plane. Other than that it was uneventful and therefore as enjoyable as a plane ride can be.

Attendants seemed un-engaged and indifferent when asked for assistance.

Overall it was a good flight. The thing I most appreciated was that you eliminated plastic cups and water bottles and stir sticks and had paper cups, wood stir sticks and cans. Plus, I saw that the airline staff were actually keeping the used paper cups separate and unfolding the used cardboard meal boxes and keeping those items separate from the trash. Good for them! This makes me want to support Alaska Airlines and fly Alaska again. Thank for taking this step in working to reduce single use plastics! Kudos!

It was pretty good except there was no food, which was understandable because it was a short flight but I would have liked to at least have a snack; otherwise it was great. Staff/crew, great. Thank you

I was on Alaska and its backup airline. I was scheduled for wheelchair service but ON ONE SHOWED UP. When I asked, desk attendant said they didn’t have any.

As noted above, getting on to the plane was rushed and upsetting since no boarding passes were available to me prior to boarding. Others were in line waiting as well. The flight and experience itself was fine. Very large plane. Two seats near windows; 4 seats in the middle aisles. Good leg room though and comfortable seats.

The trip was fine, however once we reached Seattle, our next flight only had an hour turn-around time and we had to cross the entire Seattle airport, taking three shuttles. Once there, Alaska/Hawaiian Air had still not issued my boarding passes to us and we had to wait at the counter for them. Boarding was already started and at the second to last seating level when we finally got our boarding passes. This was a bit nuts.

I am disappointed with Alaska. They are just like the cheapo airlines, nickle and dimeing us for everything. We now have to pay extra to pick our seats? Really?

I could not use my Hawaiian airlines confirmation number to check in. I figured out on my own that I had to use Alaska airlines confirmation number to check in on the Alaska airlines site. I called Hawaiian airlines and they told me that they could not help me.

Alaska Airlines crew had the empty two people seats but they lied to us and said they can adjust us , so we have to seat apart

Ok but why they need to sell the ear buds?

My flight was delayed for several hours. Sitting at gate 16 for several hours, I got a text from Kayak the gate changed to 9 before it was announced. Very bad communication at each gate from American Airlines employees. I received 10 notifications of delay from Kayak. My vacation started off horrible! I will write to American Airlines corporate office also.

The AA staff person who checked our bags was curt and almost rude. The FA also seemed unhappy doing her job. Overall it was like riding the school bus back in grade school.

Internet was a bit expensive and did not work ask that week otherwise a good flight

Ring in first class for an overnight flight, there was no blankets nor pillows for first class customers.

My Internet did not work for Outlook email or basically anything. I paid for one hour of in-flight usage and it was terrible. I spent a lot of time on different sites and browsers with no luck and a lot of frustration. Other than that, the flight was on time, crew was nice, service was fine. Seat was OK even though I paid for the extra 6 inches. I cannot imagine how tight the seats in the back must be.

Delayed flight that lead to a missed connection and a 5-hour trip became a 12-hour flight 🙄

Any flight to ORD after about 2pm this summer has been challenging. Flight was delayed getting in (coming from ORD) and that led to it not leaving before a ground stop due to lightening before they could fuel the plane, and so forth. They made up some time but we were still late in arriving at ORD, and that led to missed connections.

Food was ok, but not as good as I have had before on AA.

No issues. They did change our gate FOUR times in about 30 minutes which was mildly annoying but the flight was fine.

Great flight. No issues at all. I still think boarding could be more efficient but otherwise, a good experience.

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

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