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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 12/5. Fares are subject to change and may not be available on all flights or dates of travel.
SEA — BWI
Nov 13 — Nov 201
Thu 11/13
Thu 11/20
1 adult, Economy
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1. Tell us where you want to go

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Cheapflights Tip: The best prices from Seattle/Tacoma Intl to Baltimore/Washington are usually found in September or January, 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 October 14, 2025.

This Southwest deal was found by Cheapflights users on 10/13. 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 10/299:10 amSEA - BWI
1 stop10h 20mSouthwest
Tue 11/47:00 amBWI - SEA
2 stops16h 40mSouthwest
Deal found 10/13$225
This Southwest deal was found by Cheapflights users on 10/14. 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.
Tue 11/45:40 amSEA - BWI
1 stop7h 05mSouthwest
Fri 11/75:40 pmBWI - SEA
1 stop9h 55mSouthwest
Deal found 10/14$228
This Southwest deal was found by Cheapflights users on 10/14. 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 12/35:15 amSEA - BWI
2 stops11h 25mSouthwest
Wed 12/104:30 pmBWI - SEA
1 stop9h 00mSouthwest
Deal found 10/14$233
This Southwest deal was found by Cheapflights users on 10/13. 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.
Fri 12/56:35 amSEA - BWI
2 stops9h 55mSouthwest
Mon 12/151:05 pmBWI - SEA
2 stops12h 50mSouthwest
Deal found 10/13$238
This Delta deal was found by Cheapflights users on 10/14. 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 10/287:25 amSEA - BWI
1 stop8h 16mDelta
Sat 11/16:22 pmBWI - SEA
1 stop8h 32mDelta
Deal found 10/14$239
This United Airlines deal was found by Cheapflights users on 10/13. 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.
Tue 10/287:28 pmSEA - BWI
2 stops11h 31mUnited Airlines
Mon 11/36:35 pmBWI - SEA
1 stop9h 24mUnited Airlines
Deal found 10/13$244
This Kiwi.com deal was found by Cheapflights users on 10/13. 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.
Sat 12/610:09 amSEA - BWI
Nonstop5h 07mHawaiian Airlines
Sat 12/137:00 amBWI - SEA
Nonstop6h 02mHawaiian Airlines
Deal found 10/13$247
This American Airlines deal was found by Cheapflights users on 10/14. 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.
Sun 12/712:38 amSEA - BWI
1 stop7h 44mAmerican Airlines
Tue 12/96:00 amBWI - SEA
1 stop8h 37mAmerican Airlines
Deal found 10/14$248
This American Airlines deal was found by Cheapflights users on 10/12. 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.
Sun 11/212:59 amSEA - BWI
1 stop7h 27mAmerican Airlines
Tue 11/116:00 amBWI - SEA
1 stop8h 40mAmerican Airlines
Deal found 10/12$249
This Southwest deal was found by Cheapflights users on 10/13. 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.
Tue 11/45:40 amSEA - BWI
2 stops8h 20mSouthwest
Sat 11/89:25 amBWI - SEA
1 stop13h 50mSouthwest
Deal found 10/13$250
This American Airlines deal was found by Cheapflights users on 10/14. 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.
Mon 11/1012:41 amSEA - BWI
1 stop10h 49mAmerican Airlines
Tue 11/1811:09 amBWI - SEA
2 stops10h 51mAmerican Airlines
Deal found 10/14$252
This Southwest deal was found by Cheapflights users on 10/14. 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.
Tue 11/185:40 amSEA - BWI
2 stops8h 20mSouthwest
Sat 11/224:10 pmBWI - SEA
1 stop8h 25mSouthwest
Deal found 10/14$253

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 October 14, 2025.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$225
(Southwest)

One-way from

$85
(United Airlines)

Popular in

December

Cheapest in

September

Average price

$387
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. 5% potential increase in price ($23 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 3% potential price decrease ($13 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in October 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 October 14, 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

Wed 10/29

9:10 am-10:30 pm

1 stop10h 20m

Baltimore/Washington

Tue 11/4

7:00 am-8:40 pm

2 stops16h 40m

$225

SeattleBaltimore

SEA - BWI

SEABWI

Seattle/Tacoma Intl

Wed 10/29

5:00 am-5:14 pm

2 stops9h 14m

Baltimore/Washington

Tue 11/4

5:12 pm-10:28 pm

1 stop8h 16m

$244

SeattleBaltimore

SEA - BWI

SEABWI

Seattle/Tacoma Intl

Tue 10/28

7:00 am-5:14 pm

1 stop7h 14m

Baltimore/Washington

Tue 11/4

10:10 am-6:25 pm

2 stops11h 15m

$244

SeattleBaltimore

SEA - BWI

SEABWI

Seattle/Tacoma Intl

Wed 11/5

5:00 am-3:10 pm

1 stop7h 10m

Baltimore/Washington

Wed 11/12

10:10 am-6:25 pm

2 stops11h 15m

$244

SeattleBaltimore

SEA - BWI

SEABWI

Seattle/Tacoma Intl

Sat 2/21

9:55 am-5:55 pm

Nonstop5h 00m

Baltimore/Washington

Tue 3/3

6:55 pm-9:53 pm

Nonstop5h 58m

$257

SeattleBaltimore

SEA - BWI

SEABWI

Seattle/Tacoma Intl

Tue 12/30

9:39 pm-5:44 am

Nonstop5h 05m

Baltimore/Washington

Wed 12/31

7:00 pm-9:53 pm

Nonstop5h 53m

$277

SeattleBaltimore

SEA - BWI

SEABWI

Seattle/Tacoma Intl

Wed 12/31

9:39 pm-5:44 am

Nonstop5h 05m

Baltimore/Washington

Sun 1/4

7:04 am-9:55 am

Nonstop5h 51m

$277

SeattleBaltimore

SEA - BWI

SEABWI

Seattle/Tacoma Intl

Tue 12/30

9:39 pm-5:44 am

Nonstop5h 05m

Baltimore/Washington

Fri 1/2

7:04 am-9:55 am

Nonstop5h 51m

$277

SeattleBaltimore

SEA - BWI

SEABWI

Seattle/Tacoma Intl

Fri 12/26

9:39 pm-5:44 am

Nonstop5h 05m

Baltimore/Washington

Tue 12/30

7:04 am-9:55 am

Nonstop5h 51m

$297

SeattleBaltimore

SEA - BWI

SEABWI

Seattle/Tacoma Intl

Thu 1/1

9:54 am-6:00 pm

Nonstop5h 06m

Baltimore/Washington

Mon 1/5

7:04 am-9:55 am

Nonstop5h 51m

$297

Flights are sorted by cheapest round-trip flights first.

Deals found on 10/14

Showing 1-10 of 24 results
1
2
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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 October.
ProviderPrice AccuracyTrust Score*
ExpediaPrice Accuracy2 starsTrust Score*3 stars
FlightHubPrice Accuracy3 starsTrust Score*3 stars
eDreamsPrice Accuracy3 starsTrust Score*3 stars
Kiwi.comPrice Accuracy3 starsTrust Score*3 stars
CheapflightsfaresPrice Accuracy2 starsTrust Score*1 star
PricelinePrice Accuracy1 starTrust Score*3 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 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 October 10, 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 $117). 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 October 14, 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 25% 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 October 12, 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 October 14, 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
11,082 reviews

Entertainment

7.0

Overall

8.0

Food

7.1

Comfort

7.8

Crew

8.5

Boarding

8.1

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
11,082 reviews
Alaska Airlines
8.0
Very good
11,082 reviews

Entertainment

7.0

Overall

8.0

Food

7.1

Comfort

7.8

Crew

8.5

Boarding

8.1

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
4,238 reviews
Alaska Airlines
8.0
Very good
11,082 reviews

Entertainment

7.0

Overall

8.0

Food

7.1

Comfort

7.8

Crew

8.5

Boarding

8.1

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
8.0
Very good
7,977 reviews
Alaska Airlines
8.0
Very good
11,082 reviews

Entertainment

7.0

Overall

8.0

Food

7.1

Comfort

7.8

Crew

8.5

Boarding

8.1

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
2,779 reviews
Alaska Airlines
8.0
Very good
11,082 reviews

Entertainment

7.0

Overall

8.0

Food

7.1

Comfort

7.8

Crew

8.5

Boarding

8.1

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
11,044 reviews
Alaska Airlines
8.0
Very good
11,082 reviews

Entertainment

7.0

Overall

8.0

Food

7.1

Comfort

7.8

Crew

8.5

Boarding

8.1

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. 4h 58m 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. 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 $130. 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 cheapest airlines to fly from Seattle to Baltimore one-way?

    The cheapest airlines for a one-way flight from Seattle to Baltimore are United Airlines ($85), Southwest ($90), and Delta ($99).

  • 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 Finnair (100%), Alaska Airlines (77%) or Hawaiian Airlines (77%) 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 $636, our data indicates the cheapest price to be $128. 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 $117). 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 October 14, 2025.
AirlineCheapestAverageFlexibilityOn-time
Spirit AirlinesCheapest$130Average$276FlexibilityNo cancel feeOn-time65%
FrontierCheapest$148Average$241FlexibilityNo cancel feeOn-time62%
Hawaiian AirlinesCheapest$153Average$418FlexibilityNo cancel feeOn-time85%
DeltaCheapest$206Average$343FlexibilityNo cancel feeOn-timeN/A
American AirlinesCheapest$206Average$335FlexibilityNo cancel feeOn-time71%
United AirlinesCheapest$226Average$393FlexibilityNo cancel feeOn-time69%
SouthwestCheapest$266Average$444FlexibilityNo cancel feeOn-time63%
Alaska AirlinesCheapest$277Average$460FlexibilityNo cancel feeOn-time75%

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