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Cheap flights from Baltimore to Seattle from $64

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Baltimore to Seattle departing on 12/9. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
1 adult
0 bags

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Cheap round-trip flights

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American Airlines Logo
6:00 am - 11:40 amBWI-SEA
8h 40m1 stop
American Airlines Logo
5:48 am - 4:56 pmSEA-BWI
8h 08m1 stop
$228American Airlines
Find Deal
Tue, Nov 11 - Thu, Nov 13
Southwest Logo
10:10 pm - 9:20 amBWI-SEA
14h 10m1 stop
Southwest Logo
9:55 am - 7:45 pmSEA-BWI
6h 50m1 stop
$229Southwest
Find Deal
Mon, Dec 22 - Mon, Jan 12
Southwest Logo
6:20 am - 1:50 pmBWI-SEA
10h 30m1 stop
Southwest Logo
6:25 pm - 1:10 pmSEA-BWI
15h 45m2 stops
$233Southwest
Find Deal
Sat, Feb 21 - Thu, Feb 26
Delta Logo
6:58 pm - 12:01 amBWI-SEA
8h 03m1 stop
Delta Logo
11:10 pm - 10:02 amSEA-BWI
7h 52m1 stop
$238Delta
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Tue, Nov 11 - Wed, Nov 12
Delta Logo
4:44 pm - 11:54 pmBWI-SEA
10h 10m1 stop
Delta Logo
11:55 pm - 10:43 amSEA-BWI
7h 48m1 stop
$239Delta
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Sat, Nov 8 - Tue, Nov 11
United Airlines Logo
4:20 pm - 12:59 amBWI-SEA
11h 39m2 stops
United Airlines Logo
7:00 am - 5:14 pmSEA-BWI
7h 14m1 stop
$244United Airlines
Find Deal
Mon, Nov 10 - Tue, Nov 18
United Airlines Logo
10:05 am - 6:26 pmBWI-SEA
11h 21m2 stops
United Airlines Logo
8:40 am - 9:41 pmSEA-BWI
10h 01m2 stops
$249United Airlines
Find Deal
Tue, Jan 20 - Sat, Jan 24
Alaska Airlines Logo
7:00 am - 10:02 amBWI-SEA
6h 02mnonstop
Alaska Airlines Logo
9:39 pm - 5:44 amSEA-BWI
5h 05mnonstop
$257Alaska Airlines
Find Deal
Sat, Dec 6 - Wed, Dec 24
Frontier Logo
8:48 pm - 8:46 amBWI-SEA
14h 58m1 stop
Frontier Logo
6:18 pm - 9:37 pmSEA-BWI
24h 19m2 stops
$262Frontier
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Sun, Dec 7 - Sun, Dec 14
Alaska Airlines Logo
7:38 am - 10:30 amBWI-SEA
5h 52mnonstop
Alaska Airlines Logo
9:36 pm - 5:39 amSEA-BWI
5h 03mnonstop
$274Alaska Airlines
Find Deal
Fri, Nov 14 - Sat, Nov 22

Delta flights from Baltimore to Seattle

Our best Delta deals on Baltimore to Seattle flight tickets
Delta
Nov 11
BWI6:58 pmBaltimore/Washington
8h 03m
1 stop
SEA12:01 amSeattle/Tacoma Intl
Nov 12
SEA11:10 pmSeattle/Tacoma Intl
7h 52m
1 stop
BWI10:02 amBaltimore/Washington
$238
Find similar
Delta
Nov 8
BWI4:44 pmBaltimore/Washington
10h 10m
1 stop
SEA11:54 pmSeattle/Tacoma Intl
Nov 11
SEA11:55 pmSeattle/Tacoma Intl
7h 48m
1 stop
BWI10:43 amBaltimore/Washington
$239
Find similar
Delta
Dec 5
BWI6:00 amBaltimore/Washington
15h 26m
2 stops
SEA6:26 pmSeattle/Tacoma Intl
Dec 25
SEA11:45 amSeattle/Tacoma Intl
8h 46m
1 stop
BWI11:31 pmBaltimore/Washington
$245
Find similar

Southwest flights from Baltimore to Seattle

Our best Southwest deals on Baltimore to Seattle flight tickets
Southwest
Dec 22
BWI10:10 pmBaltimore/Washington
14h 10m
1 stop
SEA9:20 amSeattle/Tacoma Intl
Jan 12
SEA9:55 amSeattle/Tacoma Intl
6h 50m
1 stop
BWI7:45 pmBaltimore/Washington
$229
Find similar
Southwest
Feb 21
BWI6:20 amBaltimore/Washington
10h 30m
1 stop
SEA1:50 pmSeattle/Tacoma Intl
Feb 26
SEA6:25 pmSeattle/Tacoma Intl
15h 45m
2 stops
BWI1:10 pmBaltimore/Washington
$233
Find similar
Southwest
Dec 22
BWI10:10 pmBaltimore/Washington
14h 10m
1 stop
SEA9:20 amSeattle/Tacoma Intl
Jan 12
SEA6:05 amSeattle/Tacoma Intl
8h 10m
2 stops
BWI5:15 pmBaltimore/Washington
$234
Find similar

momondo Fare Finder

 
Customize your flight search to find flights from Baltimore to Seattle 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, momondo users made 832,500 searches. Data last updated October 23, 2025.
Use the filters below to find and compare flights from Baltimore to Seattle that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

BaltimoreSeattle

BWI - SEA

BWISEA

Baltimore/Washington

Tue 11/11

6:00 am-11:40 am

1 stop8h 40m

Seattle/Tacoma Intl

Thu 11/13

5:48 am-4:56 pm

1 stop8h 08m

$228

BaltimoreSeattle

BWI - SEA

BWISEA

Baltimore/Washington

Mon 12/22

10:10 pm-9:20 am

1 stop14h 10m

Seattle/Tacoma Intl

Mon 1/12

9:55 am-7:45 pm

1 stop6h 50m

$229

BaltimoreSeattle

BWI - SEA

BWISEA

Baltimore/Washington

Sat 2/21

6:20 am-1:50 pm

1 stop10h 30m

Seattle/Tacoma Intl

Thu 2/26

6:25 pm-1:10 pm

2 stops15h 45m

$233

BaltimoreSeattle

BWI - SEA

BWISEA

Baltimore/Washington

Tue 11/11

6:58 pm-12:01 am

1 stop8h 03m

Seattle/Tacoma Intl

Wed 11/12

11:10 pm-10:02 am

1 stop7h 52m

$238

BaltimoreSeattle

BWI - SEA

BWISEA

Baltimore/Washington

Sat 11/8

4:44 pm-11:54 pm

1 stop10h 10m

Seattle/Tacoma Intl

Tue 11/11

11:55 pm-10:43 am

1 stop7h 48m

$239

BaltimoreSeattle

BWI - SEA

BWISEA

Baltimore/Washington

Mon 11/10

4:20 pm-12:59 am

2 stops11h 39m

Seattle/Tacoma Intl

Tue 11/18

7:00 am-5:14 pm

1 stop7h 14m

$244

BaltimoreSeattle

BWI - SEA

BWISEA

Baltimore/Washington

Tue 1/20

10:05 am-6:26 pm

2 stops11h 21m

Seattle/Tacoma Intl

Sat 1/24

8:40 am-9:41 pm

2 stops10h 01m

$249

BaltimoreSeattle

BWI - SEA

BWISEA

Baltimore/Washington

Sat 12/6

7:00 am-10:02 am

Nonstop6h 02m

Seattle/Tacoma Intl

Wed 12/24

9:39 pm-5:44 am

Nonstop5h 05m

$257

BaltimoreSeattle

BWI - SEA

BWISEA

Baltimore/Washington

Sun 12/7

8:48 pm-8:46 am

1 stop14h 58m

Seattle/Tacoma Intl

Sun 12/14

6:18 pm-9:37 pm

2 stops24h 19m

$262

BaltimoreSeattle

BWI - SEA

BWISEA

Baltimore/Washington

Fri 11/14

7:38 am-10:30 am

Nonstop5h 52m

Seattle/Tacoma Intl

Sat 11/22

9:36 pm-5:39 am

Nonstop5h 03m

$274

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first
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See travel insights to Seattle from

How to get the cheapest flight ticket from Baltimore to Seattle

Look no further. We've gone through all the searches for this route on momondo so you have the important information and insights to find the cheapest flight ticket for your trip

What is the cheapest month to fly to Seattle?

In general, January is the cheapest month to fly from Baltimore to Seattle. Due to it being the ‘off-season’ during this time, you can expect flight prices to be around $306. If you don’t want to visit Seattle in January, then you should wait until September to fly from Baltimore, when ticket prices are also cheap, with an average price of $358.

What is the cheapest day to depart on your flight to Seattle?

On average, the least expensive day to fly to Seattle from Baltimore is on a Tuesday. momondo users have found tickets for Tuesday departures for as low as $440. However, this price may fluctuate depending on the airline, the season, and holidays. On the other hand, Sunday is the most expensive day to depart from Baltimore because it is more convenient for both business and leisure travelers. As a result, prices tend to be around $580.

What is the cheapest time of day to depart on your flight to Seattle?

Flying to Seattle from Baltimore in the evening is the least expensive time of day to depart. momondo users have found prices as low as $424 when looking at flights departing in the evening. Flights to Seattle are more costly in the morning, with an average ticket price of $523. Departure times in the morning fall within the peak daily travel times, which is why tickets can be more expensive.

What is the cheapest Baltimore/Washington to Seattle/Tacoma Intl flight route?

Fly from Baltimore/Washington to Seattle/Tacoma Intl for the best Baltimore/Washington - Seattle/Tacoma Intl flight prices

How far in advance should I book a flight to Seattle?

You are more likely to see cheaper flights to Seattle from Baltimore when booking weeks ahead of your departure date. In general, you can expect to find flights to Seattle for around $409 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Seattle from Baltimore for as low as $329 on momondo.

What cabin class options are available on Baltimore/Washington to Seattle/Tacoma Intl flights?

There are 4 cabin classes available to choose from on Baltimore/Washington to Seattle/Tacoma Intl flights. Cabin price and availability will vary by airline so perform a search above to find the right deals for you.

Can stopping save me money on Baltimore to Seattle flights?

No. A direct flight is the cheapest option for a flight between Baltimore to Seattle.

How have Baltimore to Seattle flight prices changed over time?

As of October 2025, prices for Baltimore to Seattle flights are approximately 9% cheaper when compared to flights at the same time last year.

When to book flights from Baltimore to Seattle

Are you open to changing your travel dates? Check out the ideal times to fly from Baltimore to Seattle according to our flight data. Find out which month and days have the cheapest flights.
Estimated round-trip price

Cheap Baltimore to Seattle (BWI to SEA) flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from Baltimore to Seattle

Best Price Found

$201

Fastest flight time

5h 51m

Direct flights

Every day

Airports in Seattle

1 airport
The best one-way flight to Seattle from Baltimore in the past 72 hours is $201. The best round-trip flight deal from Baltimore to Seattle found on momondo in the last 72 hours is $356.
The fastest flight from Baltimore to Seattle takes 5h 51m
Direct flights go from Baltimore to Seattle every day.
There is 1 airport near Seattle: Seattle/Tacoma Intl (SEA)
Search flight deals

  • How far is Baltimore/Washington to Seattle/Tacoma Intl by plane?

    The straight-line distance from Baltimore/Washington to Seattle/Tacoma Intl is 2326.9 mi. 5h 52m is a normal flight duration for this route.

  • When did momondo last update prices for flights from Baltimore/Washington Airport to Seattle/Tacoma Intl Airport?

    Prices for flights from Baltimore/Washington Airport to Seattle/Tacoma Intl Airport refresh daily.

  • How many operators does momondo search for flights from Baltimore/Washington Airport to Seattle/Tacoma Intl Airport?

  • How old do you have to be to fly from Baltimore/Washington Airport to Seattle/Tacoma Intl Airport?

    Although the minimum age for a child to fly alone is five, airlines that offer an unaccompanied minor (UMNR) service may have their own age limits, which could be impacted by factors such as flight length, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from Baltimore/Washington Airport to Seattle/Tacoma Intl Airport.

  • What documentation or ID do you need to fly to Seattle/Tacoma Intl Airport?

    The required travel and health documents for your Seattle/Tacoma Intl Airport trip may vary depending on your itinerary and personal circumstances. As a general rule, you should carry multiple documents, including a national ID card or driver's license and a passport valid for six months after your intended arrival at Seattle/Tacoma Intl Airport. We recommend that you seek guidance from your airline or a reliable third party such as IATA.

  • What is the most popular plane model from Baltimore to Seattle?

  • What is the most popular airline from Baltimore to Seattle?

Best airlines flying from Baltimore to Seattle

Compare and see reviews for airlines that fly from Baltimore to Seattle with momondo
Airline
Rating
Free Cancellation
Price
Spirit AirlinesPriceFrom $126Free CancellationRating
6.3
8,098 reviews
Search Spirit Airlines flights
FrontierPriceFrom $137Free CancellationRating
5.8
3,128 reviews
Search Frontier flights
DeltaPriceFrom $205Free CancellationRating
7.9
7,981 reviews
Search Delta flights
American AirlinesPriceFrom $206Free CancellationRating
7.2
11,028 reviews
Search American Airlines flights
Hawaiian AirlinesPriceFrom $231Free CancellationRating
7.8
2,788 reviews
Search Hawaiian Airlines flights
SouthwestPriceFrom $236Free CancellationRating
8.0
4,235 reviews
Search Southwest flights
United AirlinesPriceFrom $238Free CancellationRating
7.4
8,991 reviews
Search United Airlines flights
Alaska AirlinesPriceFrom $279Free CancellationRating
8.0
11,156 reviews
Search Alaska Airlines flights
Sun Country AirPriceFrom $313Free CancellationRating
6.9
334 reviews
Search Sun Country Air flights

  • Alaska Airlines Flights From Baltimore to Seattle

    The lowest priced Alaska Airlines flight from Baltimore to Seattle from the last 72 hours was $279. Generally, Alaska Airlines has 6 flights on this route every week with an average price of $472. Alaska Airlines is rated 8.0/10 by our users.

  • Hawaiian Airlines Flights From Baltimore to Seattle

    The best Hawaiian Airlines deal for Baltimore to Seattle flight tickets found on momondo in the last 72 hours was $231, round-trip. It should be noted that an average Hawaiian Airlines flight deal for this route in this time was higher, at $417 round-trip. Hawaiian Airlines operates 7 flights out of Baltimore into Seattle in an average week, so prices vary by time and availability. 2,788 Hawaiian Airlines reviews by users on momondo have scored the airline at 7.8/10.

Traveling to a place near Seattle?

Book flights to Seattle if you plan to visit one of these locations
Tacoma
Leavenworth
SeaTac
Ocean Shores
Renton
Olympia
Lynnwood
Kent
Marysville
Puyallup
Tukwila
Lakewood
Federal Way
Kirkland
Fife
Redmond
Cle Elum
Centralia
Shoreline
Westport

Why use momondo?

Why should I use momondo to find a flight deal from Baltimore to Seattle?

momondo compares prices from hundreds of airlines and agents so you can find and book the best deal on flights from Baltimore to Seattle. Millions of users trust and use momondo every year so you are in good hands.

Can I find flights from Baltimore to Seattle with flexible booking policies on momondo?

Yes. momondo allows you to filter the results for Baltimore to Seattle flights to just show those with flexible booking policies.

How can momondo help me find flights from Baltimore to Seattle?

momondo offers useful filters to help you find the right flight. Choose specific flight times, airports or even what payment method you prefer. We have numerous options to help you book your ideal flight from Baltimore to Seattle.

I’m not ready to book a flight from Baltimore to Seattle right now. Can momondo alert me if prices change?

Of course. momondo tracks the price of Baltimore to Seattle flights. All you need is a valid email address and we will do the rest; it is that quick and easy.

An easier way to manage your Seattle trip

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