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$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 12/15. Fares are subject to change and may not be available on all flights or dates of travel.
SEA — BWI
Dec 26 — Jan 21
Fri 12/26
Fri 1/2
1 adult, Economy
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Find cheap flights from Seattle to Baltimore with Cheapflights

1. Tell us where you want to go

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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 55 days in advance, depart on a Wednesday or Tuesday and return on a Tuesday

Find 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 November 26, 2025.

This United Airlines deal was found by Cheapflights users on 11/24. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/107:34 pmSEA - BWI
1 stop8h 45mUnited Airlines
Thu 12/114:15 pmBWI - SEA
1 stop8h 31mUnited Airlines
Deal found 11/24$254
This Delta deal was found by Cheapflights users on 11/24. 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 12/1511:59 pmSEA - BWI
1 stop7h 45mDelta
Tue 1/63:00 pmBWI - SEA
1 stop8h 46mDelta
Deal found 11/24$256
This Alaska Airlines deal was found by Cheapflights users on 11/24. 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.
Tue 12/169:38 pmSEA - BWI
Nonstop5h 02mAlaska Airlines
Tue 1/67:00 pmBWI - SEA
Nonstop5h 53mAlaska Airlines
Deal found 11/24$257
This Delta deal was found by Cheapflights users on 11/24. 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 12/1011:55 pmSEA - BWI
1 stop7h 49mDelta
Thu 12/117:06 pmBWI - SEA
1 stop8h 18mDelta
Deal found 11/24$259
This United Airlines deal was found by Cheapflights users on 11/26. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 12/127:34 pmSEA - BWI
1 stop8h 45mUnited Airlines
Sat 1/3110:05 amBWI - SEA
2 stops14h 07mUnited Airlines
Deal found 11/26$260
This United Airlines deal was found by Cheapflights users on 11/23. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/245:54 pmSEA - BWI
1 stop8h 20mUnited Airlines
Sat 1/1010:05 amBWI - SEA
2 stops11h 21mUnited Airlines
Deal found 11/23$264
This Kiwi.com deal was found by Cheapflights users on 11/25. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 12/76:18 pmSEA - BWI
2 stops22h 25mFrontier
Sun 12/148:48 pmBWI - SEA
1 stop14h 58mFrontier
Deal found 11/25$265
This Kiwi.com deal was found by Cheapflights users on 11/25. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 12/89:45 amSEA - BWI
2 stops35h 39mFrontier
Sun 12/148:48 pmBWI - SEA
1 stop14h 58mFrontier
Deal found 11/25$266
This Kiwi.com deal was found by Cheapflights users on 11/25. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 12/1112:48 pmSEA - BWI
2 stops17h 57mFrontier
Sun 12/148:48 pmBWI - SEA
1 stop14h 58mFrontier
Deal found 11/25$267
This Kiwi.com deal was found by Cheapflights users on 11/24. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 12/129:45 amSEA - BWI
2 stops18h 57mFrontier
Sun 12/148:48 pmBWI - SEA
1 stop14h 58mFrontier
Deal found 11/24$272
This Southwest deal was found by Cheapflights users on 11/24. 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.
Sat 12/138:30 amSEA - BWI
1 stop11h 30mSouthwest
Wed 12/177:00 amBWI - SEA
2 stops16h 40mSouthwest
Deal found 11/24$275

Cheap 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 November 26, 2025.

Most accurate provider

CheapOair
3 stars

Most trusted provider

CheapOair
3 stars

Round-trip from

$247
(American Airlines)

One-way from

$85
(United Airlines)

Popular in

December

Cheapest in

September

Average price

$368
Provider with most accurate pricing for Seattle/Tacoma Intl-Baltimore/Washington flight deals.
Search Deals
Provider most trusted by Cheapflights users for Seattle/Tacoma Intl-Baltimore/Washington flights.
Search Deals
From Seattle/Tacoma Intl to Baltimore/Washington
Search Deals
One-way flight from Seattle/Tacoma Intl to Baltimore/Washington
Search Deals
Highest demand for flights based on searches. 2% potential increase in price ($11 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 2% potential price decrease ($9 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in November 2025
Search Deals

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 November 26, 2025.
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

Tue 12/9

7:34 pm-7:19 am

1 stop8h 45m

Baltimore/Washington

Sat 12/13

4:15 pm-9:21 pm

1 stop8h 06m

$254

SeattleBaltimore

SEA - BWI

SEABWI

Seattle/Tacoma Intl

Mon 2/16

6:00 am-4:38 pm

1 stop7h 38m

Baltimore/Washington

Wed 2/18

7:05 am-3:10 pm

1 stop11h 05m

$257

SeattleBaltimore

SEA - BWI

SEABWI

Seattle/Tacoma Intl

Tue 1/27

10:11 am-6:14 pm

Nonstop5h 03m

Baltimore/Washington

Tue 2/3

7:14 pm-10:14 pm

Nonstop6h 00m

$257

SeattleBaltimore

SEA - BWI

SEABWI

Seattle/Tacoma Intl

Thu 1/15

12:00 pm-11:26 pm

1 stop8h 26m

Baltimore/Washington

Sun 1/25

6:00 am-10:42 am

1 stop7h 42m

$257

SeattleBaltimore

SEA - BWI

SEABWI

Seattle/Tacoma Intl

Thu 1/29

12:00 pm-11:26 pm

1 stop8h 26m

Baltimore/Washington

Sun 2/1

6:05 am-10:55 am

1 stop7h 50m

$257

SeattleBaltimore

SEA - BWI

SEABWI

Seattle/Tacoma Intl

Sat 12/13

8:30 am-11:00 pm

1 stop11h 30m

Baltimore/Washington

Wed 12/17

7:00 am-8:40 pm

2 stops16h 40m

$275

SeattleBaltimore

SEA - BWI

SEABWI

Seattle/Tacoma Intl

Fri 1/30

10:11 am-6:14 pm

Nonstop5h 03m

Baltimore/Washington

Wed 2/4

7:14 pm-10:14 pm

Nonstop6h 00m

$277

SeattleBaltimore

SEA - BWI

SEABWI

Seattle/Tacoma Intl

Mon 1/26

10:11 am-6:14 pm

Nonstop5h 03m

Baltimore/Washington

Tue 2/3

7:14 pm-10:14 pm

Nonstop6h 00m

$277

SeattleBaltimore

SEA - BWI

SEABWI

Seattle/Tacoma Intl

Fri 1/16

6:05 am-4:38 pm

1 stop7h 33m

Baltimore/Washington

Mon 1/19

7:00 am-3:28 pm

1 stop11h 28m

$278

SeattleBaltimore

SEA - BWI

SEABWI

Seattle/Tacoma Intl

Wed 1/14

8:40 am-9:21 pm

2 stops9h 41m

Baltimore/Washington

Mon 1/19

8:42 am-3:44 pm

1 stop10h 02m

$292

Flights are sorted by cheapest round-trip flights first.

Deals found on 11/24

Showing 1-10 of 21 results
1
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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 November.
ProviderPrice AccuracyTrust Score*
ExpediaPrice Accuracy2 starsTrust Score*3 stars
FlightHubPrice Accuracy3 starsTrust Score*1 star
eDreamsPrice Accuracy3 starsTrust Score*3 stars
PricelinePrice Accuracy1 starTrust Score*3 stars
Kiwi.comPrice Accuracy3 starsTrust Score*3 stars
CheapflightsfaresPrice Accuracy3 starsTrust Score*2 stars
CheapOairPrice Accuracy3 starsTrust Score*3 stars
CheapTicketsDealPrice Accuracy3 starsTrust Score*3 stars
Trip.comPrice Accuracy2 starsTrust Score*3 stars
CheapfaremartPrice Accuracy-Trust Score*1 star

*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 CheapOair to be most consistent on Cheapflights vs. CheapOair Users can find the same prices on Seattle-Baltimore flight deals on Cheapflights vs. CheapOair >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 CheapOair the most. CheapOair 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 November 21, 2025.

The best time to book flights from Seattle to Baltimore is 55 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 $115). Flying from Seattle to Baltimore in December is currently the most expensive (average of $216). 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 November 26, 2025.

One of the essential ways to save on airfare from Seattle to Baltimore is to remain as flexible as possible. Flights that are in the morning tend to be the most expensive. A flight in the afternoon could potentially save you up to 23% on airfare.

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

Use this chart to determine the cheapest time to fly round-trip from Seattle to Baltimore. Price data was last updated on November 25, 2025.

Travelers seeking maximum savings on their Seattle to Baltimore flight should consider departing on Tuesday afternoons when fares are most often at their lowest. Sunday at noon flights should be avoided if possible as fares are typically the most expensive at this time.

The best insider tips for Seattle to Baltimore flights

Snippets provided in this section are AI-generated based on a summarization of Cheapflights-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.
Cheapflights partnered with top experts to bring you the best recommendations for your Seattle to Baltimore trip
Airports
SEA

Use SEA Spot Saver to book security screening appointments in advance, reducing wait times. Sign up online a few days before your flight.

Read more about SEAby Brandon Schultz
BWI

Take the MTA Light Rail from BWI to downtown Baltimore for a quick and easy trip. Shuttles connect to the MARC and Amtrak station.

Read more about BWIby Emily Zemler
Our travel experts
Emily Zemler

Emily Zemler

Expert on BWI

Emily Zemler

Emily Zemler

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.

Read more
Brandon Schultz

Brandon Schultz

Expert on SEA

Brandon Schultz

Brandon Schultz

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.

Read more

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 November 26, 2025.
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.
Alaska Airlines
8.0
Very good
11,354 reviews

Boarding

8.1

Overall

8.0

Entertainment

7.0

Food

7.1

Comfort

7.8

Crew

8.5

Reviews

1 / 20
8.0
Excellent

Anonymous,Sep 2025

SEA - MKE

The crew were excellent, flight good, but the actual space for a person to occupy for 4 hours seems to get smaller and smaller 🤣. I am not overweight, and average height….very uncomfortable,, especially when I couldn’t recliner the seat at all, and the pocket in front doesn’t accommodate a water bottle.
Alaska Airlines
8.0
Very good
11,354 reviews
Alaska Airlines
8.0
Very good
11,354 reviews

Boarding

8.1

Overall

8.0

Entertainment

7.0

Food

7.1

Comfort

7.8

Crew

8.5

Reviews

1 / 20
8.0
Excellent

Anonymous,Sep 2025

SEA - MKE

The crew were excellent, flight good, but the actual space for a person to occupy for 4 hours seems to get smaller and smaller 🤣. I am not overweight, and average height….very uncomfortable,, especially when I couldn’t recliner the seat at all, and the pocket in front doesn’t accommodate a water bottle.
Southwest
8.0
Very good
4,254 reviews
Alaska Airlines
8.0
Very good
11,354 reviews

Boarding

8.1

Overall

8.0

Entertainment

7.0

Food

7.1

Comfort

7.8

Crew

8.5

Reviews

1 / 20
8.0
Excellent

Anonymous,Sep 2025

SEA - MKE

The crew were excellent, flight good, but the actual space for a person to occupy for 4 hours seems to get smaller and smaller 🤣. I am not overweight, and average height….very uncomfortable,, especially when I couldn’t recliner the seat at all, and the pocket in front doesn’t accommodate a water bottle.
Delta
7.9
Good
7,998 reviews
Alaska Airlines
8.0
Very good
11,354 reviews

Boarding

8.1

Overall

8.0

Entertainment

7.0

Food

7.1

Comfort

7.8

Crew

8.5

Reviews

1 / 20
8.0
Excellent

Anonymous,Sep 2025

SEA - MKE

The crew were excellent, flight good, but the actual space for a person to occupy for 4 hours seems to get smaller and smaller 🤣. I am not overweight, and average height….very uncomfortable,, especially when I couldn’t recliner the seat at all, and the pocket in front doesn’t accommodate a water bottle.
Hawaiian Airlines
7.8
Good
2,814 reviews
Alaska Airlines
8.0
Very good
11,354 reviews

Boarding

8.1

Overall

8.0

Entertainment

7.0

Food

7.1

Comfort

7.8

Crew

8.5

Reviews

1 / 20
8.0
Excellent

Anonymous,Sep 2025

SEA - MKE

The crew were excellent, flight good, but the actual space for a person to occupy for 4 hours seems to get smaller and smaller 🤣. I am not overweight, and average height….very uncomfortable,, especially when I couldn’t recliner the seat at all, and the pocket in front doesn’t accommodate a water bottle.
American Airlines
7.2
Good
11,038 reviews
Alaska Airlines
8.0
Very good
11,354 reviews

Boarding

8.1

Overall

8.0

Entertainment

7.0

Food

7.1

Comfort

7.8

Crew

8.5

Reviews

1 / 20
8.0
Excellent

Anonymous,Sep 2025

SEA - MKE

The crew were excellent, flight good, but the actual space for a person to occupy for 4 hours seems to get smaller and smaller 🤣. I am not overweight, and average height….very uncomfortable,, especially when I couldn’t recliner the seat at all, and the pocket in front doesn’t accommodate a water bottle.

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.

  • What airports do I use to fly from Seattle to Baltimore?

    Baltimore/Washington is the airport most travelers will use when flying to Baltimore from Seattle/Tacoma Intl. Booking flights from Seattle/Tacoma Intl (SEA) to Baltimore/Washington (BWI) should be relatively easy as there are 6 daily flights to Baltimore from 8 different airlines. 5h 00m is how long a flight from Seattle to Baltimore/Washington will take if you book a nonstop flight.

  • How popular is this Seattle to Baltimore flight route?

    This flight path from Seattle/Tacoma Intl to Baltimore/Washington was viewed by 19 users in the past month. Keep an eye out for changes in search interest prior to high and low season.

  • How long is the flight from Seattle to Baltimore?

    Departing from Seattle to Baltimore will take you 5h 03m. The distance from Seattle to Baltimore is about 2327 mi. When browsing for deals, the options you’ll see will be for both nonstop flights and flights with stops.

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

    Cheapflights users have booked flights from Seattle to Baltimore round-trip from $128. Other airlines that can offer you cheap pricing are Frontier, from $148, and Hawaiian Airlines, from $153. Spirit Airlines is priced at 68% lower than the current average price of a flight leaving 3 months from now.

  • 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 Air Tahiti Nui (90%), Alaska Airlines (89%) or Hawaiian Airlines (89%) 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 $803, our data indicates the cheapest price to be $128. The most popular route (Seattle/Tacoma Intl - Baltimore/Washington), is priced around $197.

  • 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 $115). Flying from Seattle to Baltimore in December is currently the most expensive (average of $216). 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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Alternative routes for Seattle to Baltimore

See prices for flight routes from nearby airports that may be better suited for you.
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Top 8 airlines flying from Seattle to Baltimore

Discover the top 8 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 November 26, 2025.
AirlineCheapestAverageFlexibilityOn-time
Spirit AirlinesCheapest$128Average$258FlexibilityNo cancel feeOn-time65%
FrontierCheapest$148Average$248FlexibilityNo cancel feeOn-time62%
Hawaiian AirlinesCheapest$153Average$418FlexibilityNo cancel feeOn-time85%
DeltaCheapest$196Average$347FlexibilityNo cancel feeOn-timeN/A
American AirlinesCheapest$206Average$345FlexibilityNo cancel feeOn-time71%
United AirlinesCheapest$226Average$386FlexibilityNo cancel feeOn-time69%
SouthwestCheapest$234Average$427FlexibilityNo cancel feeOn-time63%
Alaska AirlinesCheapest$264Average$453FlexibilityNo cancel feeOn-time75%

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