Baltimore

$85+ Cheap flights from Seattle to Baltimore (SEA - BWI)

This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 5/9. Fares are subject to change and may not be available on all flights or dates of travel.
SEA — BWI
Mar 13 — Mar 201
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Find cheap flights from Seattle to Baltimore with Cheapflights

1. Tell us where you want to go

Enter your travel information like dates, passengers, trip type (one-way or round trip), and preferred cabin class then click “Find deals”

2. Select your favorite providers

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3. Compare prices and book

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Cheapflights Tip: The best prices from Seattle/Tacoma Intl to Baltimore/Washington are usually found in September or November, booked 84 days in advance, depart on a Wednesday or Tuesday and return on a Tuesday

Cheap flight deals from Seattle to Baltimore

Cheapest flights from Seattle to Baltimore
Explore the most affordable flight options available from Seattle to Baltimore. Find the lowest fares from popular airlines and budget airlines, with prices last updated on February 11, 2026.

This American Airlines deal was found by Cheapflights users on 2/11. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 3/51:44 pm
SEA
-
BWI
1 stop7h 14m
American Airlines
Tue 4/146:26 pm
BWI
-
SEA
1 stop9h 04m
American Airlines
Deal found 2/11$179
This Southwest deal was found by Cheapflights users on 2/9. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 4/295:35 pm
SEA
-
BWI
1 stop9h 10m
Southwest
Sat 5/22:40 pm
BWI
-
SEA
2 stops10h 20m
Southwest
Deal found 2/9$184
This Alaska Airlines deal was found by Cheapflights users on 2/8. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 8/2610:20 pm
SEA
-
BWI
Nonstop5h 01m
Alaska Airlines
Tue 9/17:10 pm
BWI
-
SEA
Nonstop5h 51m
Alaska Airlines
Deal found 2/8$197
This American Airlines deal was found by Cheapflights users on 2/11. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 4/16:00 am
SEA
-
BWI
1 stop8h 04m
American Airlines
Tue 4/146:26 pm
BWI
-
SEA
1 stop9h 04m
American Airlines
Deal found 2/11$198
This Delta deal was found by Cheapflights users on 2/10. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 3/1111:15 pm
SEA
-
BWI
1 stop8h 15m
Delta
Wed 3/187:01 am
BWI
-
SEA
1 stop8h 26m
Delta
Deal found 2/10$207
This Delta deal was found by Cheapflights users on 2/9. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 3/1811:15 pm
SEA
-
BWI
1 stop8h 15m
Delta
Tue 3/245:40 am
BWI
-
SEA
1 stop7h 53m
Delta
Deal found 2/9$216
This Delta deal was found by Cheapflights users on 2/9. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 2/2311:15 pm
SEA
-
BWI
1 stop8h 17m
Delta
Wed 2/256:00 am
BWI
-
SEA
1 stop7h 42m
Delta
Deal found 2/9$217
This Delta deal was found by Cheapflights users on 2/9. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 3/316:00 am
SEA
-
BWI
1 stop7h 49m
Delta
Sun 4/57:01 am
BWI
-
SEA
1 stop10h 53m
Delta
Deal found 2/9$218
This Southwest deal was found by Cheapflights users on 2/10. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 4/17:00 pm
SEA
-
BWI
1 stop7h 45m
Southwest
Wed 4/86:30 am
BWI
-
SEA
1 stop9h 15m
Southwest
Deal found 2/10$219
This Southwest deal was found by Cheapflights users on 2/8. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 3/259:50 am
SEA
-
BWI
1 stop10h 05m
Southwest
Wed 4/14:10 pm
BWI
-
SEA
2 stops11h 30m
Southwest
Deal found 2/8$224
This Delta deal was found by Cheapflights users on 2/9. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 3/76:15 am
SEA
-
BWI
1 stop8h 39m
Delta
Wed 3/116:00 am
BWI
-
SEA
1 stop9h 31m
Delta
Deal found 2/9$226

Find flight deals from Seattle to Baltimore

Discover tips and strategies to find the most affordable flight options for your journey from Seattle (SEA) to Baltimore (BWI). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated February 11, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$179
(American Airlines)

One-way from

$85
(United Airlines)

Popular in

December

Cheapest in

September

Average price

$398
Provider with most accurate pricing for Seattle/Tacoma Intl-Baltimore/Washington flight deals.
Provider most trusted by Cheapflights users for Seattle/Tacoma Intl-Baltimore/Washington flights.
From Seattle/Tacoma Intl to Baltimore/Washington
One-way flight from Seattle/Tacoma Intl to Baltimore/Washington
Highest demand for flights based on searches. 6% potential increase in price ($27 potential increase over avg. RT price).
Cheapest flight prices on average. 2% potential price decrease ($9 potential savings vs. average RT price).
Average for round-trip flights in February 2026

Cheapflights Fare Finder

 
Customize your flight search to find flights from Seattle to Baltimore that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated February 11, 2026.
Use the filters below to find and compare flights from Seattle to Baltimore that are best for you.

Fly from

Seattle

Fly to

Baltimore

Route

Depart

Return

Price

SeattleBaltimore

SEA - BWI

SEABWI

Seattle/Tacoma Intl

Wed 5/13

6:10 am-6:19 pm

1 stop9h 09m

Baltimore/Washington

Wed 6/3

7:15 pm-11:39 pm

1 stop7h 24m

$197

SeattleBaltimore

SEA - BWI

SEABWI

Seattle/Tacoma Intl

Sat 3/7

6:15 am-5:54 pm

1 stop8h 39m

Baltimore/Washington

Mon 3/9

6:59 pm-11:38 pm

1 stop7h 39m

$197

SeattleBaltimore

SEA - BWI

SEABWI

Seattle/Tacoma Intl

Mon 3/30

6:00 am-6:04 pm

1 stop9h 04m

Baltimore/Washington

Tue 4/7

11:45 am-6:26 pm

1 stop9h 41m

$207

SeattleBaltimore

SEA - BWI

SEABWI

Seattle/Tacoma Intl

Mon 3/30

6:00 am-6:04 pm

1 stop9h 04m

Baltimore/Washington

Sun 4/5

7:01 am-2:54 pm

1 stop10h 53m

$207

SeattleBaltimore

SEA - BWI

SEABWI

Seattle/Tacoma Intl

Tue 3/31

7:35 pm-5:51 am

1 stop7h 16m

Baltimore/Washington

Sun 4/5

7:01 am-2:54 pm

1 stop10h 53m

$207

SeattleBaltimore

SEA - BWI

SEABWI

Seattle/Tacoma Intl

Tue 8/4

10:35 pm-9:15 am

1 stop7h 40m

Baltimore/Washington

Tue 8/25

8:10 am-1:46 pm

1 stop8h 36m

$218

SeattleBaltimore

SEA - BWI

SEABWI

Seattle/Tacoma Intl

Wed 4/1

7:00 pm-5:45 am

1 stop7h 45m

Baltimore/Washington

Tue 4/7

3:30 pm-11:35 pm

1 stop11h 05m

$219

SeattleBaltimore

SEA - BWI

SEABWI

Seattle/Tacoma Intl

Tue 4/28

5:35 pm-5:45 am

1 stop9h 10m

Baltimore/Washington

Sat 5/2

2:40 pm-10:00 pm

2 stops10h 20m

$224

SeattleBaltimore

SEA - BWI

SEABWI

Seattle/Tacoma Intl

Thu 5/28

6:30 am-11:55 pm

1 stop14h 25m

Baltimore/Washington

Mon 6/1

9:55 am-5:20 pm

1 stop10h 25m

$224

SeattleBaltimore

SEA - BWI

SEABWI

Seattle/Tacoma Intl

Sat 3/7

6:15 am-5:54 pm

1 stop8h 39m

Baltimore/Washington

Wed 3/11

6:00 am-12:31 pm

1 stop9h 31m

$226

Flights are sorted by cheapest round-trip flights first.

Deals found on 2/8

Showing 1-10 of 21 results
1
2
3

Compare providers for flights from Seattle to Baltimore

Provider information is updated monthly. Please note that these providers often have deals for this flight, but the availability may vary on a day-by-day basis on Cheapflights.
Use the table below to compare price accuracy, trust ratings, and cancellation policies for each provider offering flight deals from Seattle to Baltimore in February.
ProviderPrice AccuracyTrust Score*
ExpediaPrice Accuracy1 starTrust Score*3 stars
FlightHubPrice Accuracy3 starsTrust Score*3 stars
CheapTicketsDealPrice Accuracy3 starsTrust Score*3 stars
PricelinePrice Accuracy1 starTrust Score*3 stars
Kiwi.comPrice Accuracy3 starsTrust Score*3 stars

*The Trust Score is based on feedback from users after their booking experience. It measures overall satisfaction, helping us identify issues like hidden fees, problems during the ticketing process, and the quality of customer service. This score is our best indicator of the provider's quality and reliability.

  • Most accurate provider: When it comes to deals on Seattle-Baltimore flights, users find the pricing of FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on Seattle-Baltimore flight deals on Cheapflights vs. FlightHub >95% of the time. Price accuracy is based on data collected from Seattle-Baltimore flight searches over the past month and is updated monthly.
  • Most trusted provider: When it comes to deals on Seattle-Baltimore flights, Cheapflights users trust FlightHub the most. FlightHub has received a user feedback score of 3 out of 3 stars (3 being the best), meaning they have been trusted the most by Cheapflights users looking for Seattle-Baltimore flight deals. Provider user feedback score is based on Cheapflights searches over the past month and is updated monthly.

Best time to book a flight from Seattle to Baltimore

Have a flexible travel schedule? Discover the best time to fly to Baltimore from Seattle with our price prediction graph.
Estimated round-trip price
Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.

Cheapflights Insights

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

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

Use this chart to determine the optimal time to book a round-trip flight from Seattle to Baltimore. Price data was last updated on February 6, 2026.

The best time to book flights from Seattle to Baltimore is 84 days before your desired departure date. The cost of your flight will likely increase significantly if you book two weeks in advance of your flight.

What is the cheapest month to book a flight from Seattle to Baltimore?

Currently, May is the cheapest month in which you can book a flight from Seattle to Baltimore (average of $103). Flying from Seattle to Baltimore in December is currently the most expensive (average of $209). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

What is the cheapest time of day to fly from SEA to BWI?

Find hourly flight availability from Seattle to Baltimore. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated February 11, 2026.

Regardless of the time of day you decide to fly, the ticket price will remain around the same. Book flights from Seattle to Baltimore as you normally would.

The best insider tips for Seattle to Baltimore flights

AI-powered summary based on content written by travel experts. AI can make mistakes.
Cheapflights partnered with top experts to bring you the best recommendations for your Seattle to Baltimore trip
Our travel experts
Emily Zemler

Emily Zemler

Expert on BWI

Emily is a freelance writer and book author based in London covering entertainment and travel. Her work has appeared in Los Angeles Times, Observer, and Conde Nast Traveler She has ventured to more than 40 countries and all seven continents, always in search of a great art museum. She has written extensively about hotels, luxury travel, and aviation.

Brandon Schultz

Brandon Schultz

Expert on SEA

Brandon Schultz is an award-winning food and travel writer based in New York City. His work has appeared in Forbes, AAA, Thrillist, Travel + Leisure, and The Daily Meal, among many others, and he is the author of 6 books, including 3 cookbooks.

Reviews of airlines servicing Baltimore

Get insights into the airlines that provide service to Baltimore. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to Baltimore. Reviews last updated February 11, 2026.
See what other customers who have flown with Alaska Airlines, Southwest, and Delta from Seattle to Baltimore have to say. You can also see how each airline compares in terms of entertainment options, comfort, food, crew/service, and boarding process.

Boarding

8.1

Crew

8.5

Entertainment

7.0

Comfort

7.8

Overall

8.0

Food

7.1

Reviews

1 / 20
4.0
Okay

Anonymous,Dec 2025

SEA - MSY

I really got a lesson in upgrades. I let my seat get chosen . Both times a middle seat...on purpose ...even when we were not full. That's petty I sat behind the first class . They got more than 1 drink ...and a snack . .and the staff actually talked to them...behind a see thru shawl/sheet in the aisle....... You could see over the seats just fine and you could hear the voices just fine. But the sheet let You KNOW. Your not welcome here. For a moment I regretted not spending 300 dollars per seat so I could see a smile and eat a sandwhich and enjoy my seat . The married couple drank champain and laughed and flirted with each other. It looked so happy and care free MONEY really does buy happiness ..the hateful glares and sighs from my seat mates brought me back to reality I wasn't rich and I still had 2 hours left in this middle seat.

Boarding

8.1

Crew

8.5

Entertainment

7.0

Comfort

7.8

Overall

8.0

Food

7.1

Reviews

1 / 20
4.0
Okay

Anonymous,Dec 2025

SEA - MSY

I really got a lesson in upgrades. I let my seat get chosen . Both times a middle seat...on purpose ...even when we were not full. That's petty I sat behind the first class . They got more than 1 drink ...and a snack . .and the staff actually talked to them...behind a see thru shawl/sheet in the aisle....... You could see over the seats just fine and you could hear the voices just fine. But the sheet let You KNOW. Your not welcome here. For a moment I regretted not spending 300 dollars per seat so I could see a smile and eat a sandwhich and enjoy my seat . The married couple drank champain and laughed and flirted with each other. It looked so happy and care free MONEY really does buy happiness ..the hateful glares and sighs from my seat mates brought me back to reality I wasn't rich and I still had 2 hours left in this middle seat.

Boarding

8.1

Crew

8.5

Entertainment

7.0

Comfort

7.8

Overall

8.0

Food

7.1

Reviews

1 / 20
4.0
Okay

Anonymous,Dec 2025

SEA - MSY

I really got a lesson in upgrades. I let my seat get chosen . Both times a middle seat...on purpose ...even when we were not full. That's petty I sat behind the first class . They got more than 1 drink ...and a snack . .and the staff actually talked to them...behind a see thru shawl/sheet in the aisle....... You could see over the seats just fine and you could hear the voices just fine. But the sheet let You KNOW. Your not welcome here. For a moment I regretted not spending 300 dollars per seat so I could see a smile and eat a sandwhich and enjoy my seat . The married couple drank champain and laughed and flirted with each other. It looked so happy and care free MONEY really does buy happiness ..the hateful glares and sighs from my seat mates brought me back to reality I wasn't rich and I still had 2 hours left in this middle seat.

Boarding

8.1

Crew

8.5

Entertainment

7.0

Comfort

7.8

Overall

8.0

Food

7.1

Reviews

1 / 20
4.0
Okay

Anonymous,Dec 2025

SEA - MSY

I really got a lesson in upgrades. I let my seat get chosen . Both times a middle seat...on purpose ...even when we were not full. That's petty I sat behind the first class . They got more than 1 drink ...and a snack . .and the staff actually talked to them...behind a see thru shawl/sheet in the aisle....... You could see over the seats just fine and you could hear the voices just fine. But the sheet let You KNOW. Your not welcome here. For a moment I regretted not spending 300 dollars per seat so I could see a smile and eat a sandwhich and enjoy my seat . The married couple drank champain and laughed and flirted with each other. It looked so happy and care free MONEY really does buy happiness ..the hateful glares and sighs from my seat mates brought me back to reality I wasn't rich and I still had 2 hours left in this middle seat.

Boarding

8.1

Crew

8.5

Entertainment

7.0

Comfort

7.8

Overall

8.0

Food

7.1

Reviews

1 / 20
4.0
Okay

Anonymous,Dec 2025

SEA - MSY

I really got a lesson in upgrades. I let my seat get chosen . Both times a middle seat...on purpose ...even when we were not full. That's petty I sat behind the first class . They got more than 1 drink ...and a snack . .and the staff actually talked to them...behind a see thru shawl/sheet in the aisle....... You could see over the seats just fine and you could hear the voices just fine. But the sheet let You KNOW. Your not welcome here. For a moment I regretted not spending 300 dollars per seat so I could see a smile and eat a sandwhich and enjoy my seat . The married couple drank champain and laughed and flirted with each other. It looked so happy and care free MONEY really does buy happiness ..the hateful glares and sighs from my seat mates brought me back to reality I wasn't rich and I still had 2 hours left in this middle seat.

Boarding

8.1

Crew

8.5

Entertainment

7.0

Comfort

7.8

Overall

8.0

Food

7.1

Reviews

1 / 20
4.0
Okay

Anonymous,Dec 2025

SEA - MSY

I really got a lesson in upgrades. I let my seat get chosen . Both times a middle seat...on purpose ...even when we were not full. That's petty I sat behind the first class . They got more than 1 drink ...and a snack . .and the staff actually talked to them...behind a see thru shawl/sheet in the aisle....... You could see over the seats just fine and you could hear the voices just fine. But the sheet let You KNOW. Your not welcome here. For a moment I regretted not spending 300 dollars per seat so I could see a smile and eat a sandwhich and enjoy my seat . The married couple drank champain and laughed and flirted with each other. It looked so happy and care free MONEY really does buy happiness ..the hateful glares and sighs from my seat mates brought me back to reality I wasn't rich and I still had 2 hours left in this middle seat.

Related info for your journey

Find useful and relevant information for your journey from Seattle to Baltimore. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.
  • How popular is this Seattle to Baltimore flight route?

  • How long is the flight from Seattle to Baltimore?

    Departing from Seattle to Baltimore will take you 9h 09m. The distance from Seattle to Baltimore is about 2327 mi.

  • What are the cheapest airlines flying from Seattle to Baltimore round-trip?

    Cheapflights users have booked flights from Seattle to Baltimore round-trip from $103. Other airlines that can offer you cheap pricing are Frontier, from $139, and Hawaiian Airlines, from $143. Delta is priced at 74% lower than the current average price of a flight leaving 3 months from now.

  • What are the cheapest airlines to fly from Seattle to Baltimore one-way?

    The cheapest airlines for a one-way flight from Seattle to Baltimore are American Airlines ($89), Delta ($98), and Frontier ($100).

  • What are the most reliable airlines from Seattle to Baltimore?

    No one likes to see their flight delayed. When booking a flight from Seattle to Baltimore consider choosing Alaska Airlines (85%), Hawaiian Airlines (85%) or Air Tahiti Nui (85%) as they are the most reliable in getting you off to your destination on time.

  • What are the cheapest flights from Seattle to Baltimore?

    Looking for the cheapest flight from Seattle to Baltimore? While on average our users pay $753, our data indicates the cheapest price to be $148. The most popular route (Seattle/Tacoma Intl - Baltimore/Washington), is priced around $179.

  • Can I find deals for flights from Seattle to Baltimore that include hotel bookings?

    Yes. In addition to deals on Seattle to Baltimore flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from Seattle to Baltimore?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Seattle to Baltimore.

  • Can I find deals for business class flights from Seattle to Baltimore?

    Yes. Cheapflights offers flight deals from Seattle to Baltimore by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

  • What is the cheapest month to book a flight from Seattle to Baltimore?

    Currently, May is the cheapest month in which you can book a flight from Seattle to Baltimore (average of $103). Flying from Seattle to Baltimore in December is currently the most expensive (average of $209). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

See more FAQs

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Top 7 airlines flying from Seattle to Baltimore

Discover the top 7 airlines that operate flights from Seattle to Baltimore. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated February 11, 2026.
AirlineCheapestAverageFlexibilityOn-time
DeltaCheapest$103Average$342FlexibilityNo cancel feeOn-timeN/A
FrontierCheapest$139Average$230FlexibilityNo cancel feeOn-time62%
Hawaiian AirlinesCheapest$143Average$395FlexibilityNo cancel feeOn-time85%
American AirlinesCheapest$178Average$281FlexibilityNo cancel feeOn-time71%
SouthwestCheapest$218Average$447FlexibilityNo cancel feeOn-time63%
United AirlinesCheapest$226Average$416FlexibilityNo cancel feeOn-time69%
Alaska AirlinesCheapest$256Average$440FlexibilityNo cancel feeOn-time75%

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