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$124+ 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 7/4. Fares are subject to change and may not be available on all flights or dates of travel.
SEA — BWI
Jun 17 — Jun 241
Tue 6/17
Tue 6/24
1 adult, Economy
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Cheapflights Tip: The best prices from Seattle/Tacoma Intl to Baltimore/Washington are usually found in September or October, booked 31 days in advance, depart on a Tuesday or Thursday and return on a Tuesday

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 June 12, 2025.

Round-trip from

$227
(Delta)

One-way from

$124
(Delta)

Popular in

December

Cheapest in

September

Average price

$451
From Seattle/Tacoma Intl to Baltimore/Washington
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One-way flight from Seattle/Tacoma Intl to Baltimore/Washington
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Highest demand for flights based on searches. 7% potential increase in price ($33 potential increase over avg. RT price).
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Cheapest flight prices on average. 2% potential price decrease ($11 potential savings vs. average RT price).
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Average for round-trip flights in June 2025
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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 June 12, 2025.

This American Airlines deal was found by Cheapflights users on 6/10. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/86:00 amSEA - BWI
1 stop6h 55mAmerican Airlines
Wed 10/156:49 amBWI - SEA
1 stop8h 04mAmerican Airlines
Deal found 6/10$214
This Delta deal was found by Cheapflights users on 6/10. 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 11/2612:40 amSEA - BWI
1 stop7h 11mDelta
Fri 12/56:15 pmBWI - SEA
1 stop8h 19mDelta
Deal found 6/10$227
This United Airlines deal was found by Cheapflights users on 6/9. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 8/207:00 pmSEA - BWI
1 stop7h 21mUnited Airlines
Sun 8/246:15 amBWI - SEA
1 stop8h 16mUnited Airlines
Deal found 6/9$251
This Cheapflightsfares deal was found by Cheapflights users on 6/10. 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 Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 7/13:58 pmSEA - BWI
1 stop10h 45mSpirit Airlines
Tue 7/86:00 amBWI - SEA
1 stop12h 03mSpirit Airlines
Deal found 6/10$257
This FlightHub deal was found by Cheapflights users on 6/10. 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 9/86:00 amSEA - BWI
1 stop9h 04mMultiple Airlines
Wed 9/178:00 amBWI - SEA
1 stop10h 53mMultiple Airlines
Deal found 6/10$265
This KAYAK deal was found by Cheapflights users on 6/12. 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 KAYAK is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/29:29 pmSEA - BWI
Nonstop5h 04mHawaiian Airlines
Fri 9/57:22 pmBWI - SEA
Nonstop5h 43mHawaiian Airlines
Deal found 6/12$268
This FlightHub deal was found by Cheapflights users on 6/10. 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 8/216:17 amSEA - BWI
1 stop8h 27mFrontier
Thu 8/286:29 pmBWI - SEA
1 stop9h 05mFrontier
Deal found 6/10$270
This Alaska Airlines deal was found by Cheapflights users on 6/11. 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 Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/119:29 pmSEA - BWI
Nonstop5h 04mAlaska Airlines
Thu 9/187:22 pmBWI - SEA
Nonstop5h 43mAlaska Airlines
Deal found 6/11$277
This Southwest deal was found by Cheapflights users on 6/9. 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 8/205:35 amSEA - BWI
1 stop9h 10mSouthwest
Sun 8/249:25 amBWI - SEA
Nonstop5h 45mSouthwest
Deal found 6/9$287
This Sun Country Air deal was found by Cheapflights users on 6/12. 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 Sun Country Air is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/306:28 pmSEA - BWI
1 stop13h 10mSun Country Air
Mon 11/312:20 pmBWI - SEA
1 stop7h 55mSun Country Air
Deal found 6/12$295

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 June 12, 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 10/8

6:00 am-3:55 pm

1 stop6h 55m

Baltimore/Washington

Wed 10/15

6:49 am-11:53 am

1 stop8h 04m

$214

SeattleBaltimore

SEA - BWI

SEABWI

Seattle/Tacoma Intl

Wed 11/26

12:40 am-10:51 am

1 stop7h 11m

Baltimore/Washington

Tue 12/2

6:15 pm-11:34 pm

1 stop8h 19m

$227

SeattleBaltimore

SEA - BWI

SEABWI

Seattle/Tacoma Intl

Wed 8/20

7:00 pm-5:21 am

1 stop7h 21m

Baltimore/Washington

Sun 8/24

6:15 am-11:31 am

1 stop8h 16m

$251

SeattleBaltimore

SEA - BWI

SEABWI

Seattle/Tacoma Intl

Tue 7/1

3:58 pm-5:43 am

1 stop10h 45m

Baltimore/Washington

Tue 7/8

6:00 am-3:03 pm

1 stop12h 03m

$257

SeattleBaltimore

SEA - BWI

SEABWI

Seattle/Tacoma Intl

Mon 9/8

6:00 am-6:04 pm

1 stop9h 04m

Baltimore/Washington

Wed 9/17

8:00 am-3:53 pm

1 stop10h 53m

$265

SeattleBaltimore

SEA - BWI

SEABWI

Seattle/Tacoma Intl

Tue 9/2

9:29 pm-5:33 am

Nonstop5h 04m

Baltimore/Washington

Fri 9/5

7:22 pm-10:05 pm

Nonstop5h 43m

$268

SeattleBaltimore

SEA - BWI

SEABWI

Seattle/Tacoma Intl

Thu 8/21

6:17 am-5:44 pm

1 stop8h 27m

Baltimore/Washington

Thu 8/28

6:29 pm-12:34 am

1 stop9h 05m

$270

SeattleBaltimore

SEA - BWI

SEABWI

Seattle/Tacoma Intl

Thu 9/11

9:29 pm-5:33 am

Nonstop5h 04m

Baltimore/Washington

Fri 9/12

7:22 pm-10:05 pm

Nonstop5h 43m

$277

SeattleBaltimore

SEA - BWI

SEABWI

Seattle/Tacoma Intl

Wed 8/20

5:35 am-5:45 pm

1 stop9h 10m

Baltimore/Washington

Sun 8/24

9:25 am-12:10 pm

Nonstop5h 45m

$287

SeattleBaltimore

SEA - BWI

SEABWI

Seattle/Tacoma Intl

Thu 10/30

6:28 pm-10:38 am

1 stop13h 10m

Baltimore/Washington

Mon 11/3

12:20 pm-5:15 pm

1 stop7h 55m

$295

Flights are sorted by cheapest round-trip flights first.

Deals found on 6/11

Showing 1-10 of 20 results
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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

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 June 9, 2025.

The best time to book flights from Seattle to Baltimore is 31 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, August is the cheapest month in which you can book a flight from Seattle to Baltimore (average of $241). Flying from Seattle to Baltimore in March is currently the most expensive (average of $290). 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 June 12, 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 27% 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 June 8, 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 mornings flights should be avoided if possible as fares are typically the most expensive at this time.

Weekly flight availability from Seattle to Baltimore

Explore weekly flight availability from Seattle to Baltimore. Discover flights operating on different days of the week, giving you the flexibility to choose a travel day that best fits your plans. Compare info to find the most convenient option for your journey. Data last updated June 12, 2025.

The most flights from SEA to BWI are scheduled on a Monday (7 on average). You will have fewer flight options on Sunday, which is when the least amount of flights are scheduled (4 on average).

Rainfall in Baltimore by month

Plan your trip to Baltimore by taking into account the average rainfall totals by month.

In terms of precipitation, rainfall in Baltimore ranges from 2.9 - 4.1 inches per month. July is typically the wettest month, when rainfall can reach 4.1 in. February is typically the driest time to visit Baltimore when rainfall is around 2.9 in.

Temperature in Baltimore by month

Plan your trip to Baltimore by taking into account the average temperature totals by month.

If weather is an important factor for your trip to Baltimore, use this chart to help with planning. For those seeking warmer temperatures, July is the ideal time of year to visit, when temperatures reach an average of 77.0 F. Travelers looking to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 33.8 F).

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 June 12, 2025.
Peruse reviews from past customers who have flown with Alaska Airlines, Southwest and Delta from Seattle to Baltimore to help guide your decision. In addition to providing an overall rating, users have also rated airlines in terms of entertainment options, comfort, food, crew/service, and boarding process.
Alaska Airlines
8.0
Very good
10,000 reviews

Overall

8.0

Food

7.1

Boarding

8.1

Comfort

7.8

Entertainment

7.1

Crew

8.5

Reviews

1 / 20
8.0
Excellent

Anonymous,Aug 2024

SEA - LAS

Seats were not that comfy especially for someone with big hips 😥
Alaska Airlines
8.0
Very good
10,000 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Overall

8.0

Food

7.1

Boarding

8.1

Comfort

7.8

Entertainment

7.1

Crew

8.5

Reviews

1 / 20
8.0
Excellent

Anonymous,Aug 2024

SEA - LAS

Seats were not that comfy especially for someone with big hips 😥
Southwest
8.0
Very good
4,287 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Overall

8.0

Food

7.1

Boarding

8.1

Comfort

7.8

Entertainment

7.1

Crew

8.5

Reviews

1 / 20
8.0
Excellent

Anonymous,Aug 2024

SEA - LAS

Seats were not that comfy especially for someone with big hips 😥
Delta
8.0
Very good
7,946 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Overall

8.0

Food

7.1

Boarding

8.1

Comfort

7.8

Entertainment

7.1

Crew

8.5

Reviews

1 / 20
8.0
Excellent

Anonymous,Aug 2024

SEA - LAS

Seats were not that comfy especially for someone with big hips 😥
Hawaiian Airlines
7.9
Good
2,494 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Overall

8.0

Food

7.1

Boarding

8.1

Comfort

7.8

Entertainment

7.1

Crew

8.5

Reviews

1 / 20
8.0
Excellent

Anonymous,Aug 2024

SEA - LAS

Seats were not that comfy especially for someone with big hips 😥
United Airlines
7.4
Good
8,790 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Overall

8.0

Food

7.1

Boarding

8.1

Comfort

7.8

Entertainment

7.1

Crew

8.5

Reviews

1 / 20
8.0
Excellent

Anonymous,Aug 2024

SEA - LAS

Seats were not that comfy especially for someone with big hips 😥

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 59m 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 12 users in the past month. Keep an eye out for changes in search interest prior to high and low season.

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

    Cheapflights users have booked flights from Seattle to Baltimore round-trip from $227. Other airlines that can offer you cheap pricing are United Airlines, from $251, and American Airlines, from $252. Delta is priced at 46% 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 Delta ($124), United Airlines ($126), and Spirit Airlines ($128).

  • 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 Hawaiian Airlines (74%), Air Tahiti Nui (73%) or Alaska Airlines (61%) 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 $337, our data indicates the cheapest price to be $138. The most popular route (Seattle/Tacoma Intl - Baltimore/Washington), is priced around $207.

  • Where are the most common layover locations when flying from Seattle to Baltimore?

    Flights departing from Seattle and landing in Baltimore layover in Charlotte most frequently. Seattle to Baltimore flights stop in Denver the next most.

  • What are some popular things to do or see while on a layover in Charlotte?

    If you're on a layover in Charlotte and looking for things to do, consider visiting Carowind, Mint Museum Uptown, or NASCAR Hall of Fame. Carowind, Mint Museum Uptown, and NASCAR Hall of Fame can be visited by traveling about 8.2 mi, 5.4 mi, and 5.7 mi respectively from Charlotte Douglas. Travelers can rent a car at Charlotte Douglas for an average daily rate of $48 to make sightseeing during their layover a little easier.

  • What are some popular points of interest to see during a layover in Denver?

    Coors Field, Paramount Theatre, and Larimer Square are currently the most popular points of interest in Denver at the moment. Travelers on a layover in Denver can visit Coors Field, Paramount Theatre, and Larimer Square, by traveling 18.4 mi, 18.6 mi, and 18.9 mi, respectively after landing at Denver Intl. Those on a layover in Denver in need of a rental car can book one at Denver Intl for about $54.

  • Where are the least popular layover locations for Seattle to Baltimore flights?

    Flights departing from Seattle and landing in Baltimore layover in Chicago least frequently.

  • 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, August is the cheapest month in which you can book a flight from Seattle to Baltimore (average of $241). Flying from Seattle to Baltimore in March is currently the most expensive (average of $290). 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 June 12, 2025.
AirlineCheapestAverageFlexibilityOn-time
FrontierCheapest$86Average$194FlexibilityNo cancel feeOn-time62%
Spirit AirlinesCheapest$182Average$267FlexibilityNo cancel feeOn-time65%
Hawaiian AirlinesCheapest$199Average$437FlexibilityNo cancel feeOn-time85%
DeltaCheapest$203Average$345FlexibilityNo cancel feeOn-timeN/A
American AirlinesCheapest$206Average$374FlexibilityNo cancel feeOn-time71%
United AirlinesCheapest$262Average$421FlexibilityNo cancel feeOn-time69%
Alaska AirlinesCheapest$276Average$477FlexibilityNo cancel feeOn-time75%
SouthwestCheapest$304Average$421FlexibilityNo cancel feeOn-time63%

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