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Cheap flights from Baltimore to Seattle from $90

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 1/14. 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

Enter your travel dates to find the best prices.
American Airlines Logo
11:13 am - 7:04 pm
BWI
-
SEA
10h 51m1 stop
American Airlines Logo
9:45 pm - 10:19 am
SEA
-
BWI
9h 34m1 stop
$227American Airlines
Sun, Jan 18 - Sun, Jan 25
Delta Logo
5:25 pm - 9:49 pm
BWI
-
SEA
7h 24m1 stop
Delta Logo
11:10 pm - 10:27 am
SEA
-
BWI
8h 17m1 stop
$228Delta
Mon, Jan 19 - Mon, Jan 26
Southwest Logo
7:45 am - 1:15 pm
BWI
-
SEA
8h 30m1 stop
Southwest Logo
11:40 am - 5:45 am
SEA
-
BWI
15h 05m2 stops
$230Southwest
Thu, Jan 22 - Sat, Jan 31
American Airlines Logo
11:13 am - 8:35 pm
BWI
-
SEA
12h 22m2 stops
American Airlines Logo
12:45 pm - 11:21 pm
SEA
-
BWI
7h 36m1 stop
$233American Airlines
Wed, Jan 21 - Thu, Jan 29
American Airlines Logo
2:46 pm - 11:51 pm
BWI
-
SEA
12h 05m2 stops
American Airlines Logo
8:35 am - 11:21 pm
SEA
-
BWI
11h 46m2 stops
$238American Airlines
Fri, Jan 23 - Tue, Jan 27
Southwest Logo
10:00 am - 5:50 pm
BWI
-
SEA
10h 50m1 stop
Southwest Logo
6:05 am - 5:15 pm
SEA
-
BWI
8h 10m2 stops
$244Southwest
Tue, Jan 20 - Tue, Jan 27
American Airlines Logo
6:43 am - 12:32 pm
BWI
-
SEA
8h 49m1 stop
American Airlines Logo
1:49 pm - 12:07 am
SEA
-
BWI
7h 18m1 stop
$246American Airlines
Tue, Feb 17 - Sat, Feb 21
American Airlines Logo
2:46 pm - 8:45 pm
BWI
-
SEA
8h 59m1 stop
American Airlines Logo
12:45 pm - 11:21 pm
SEA
-
BWI
7h 36m1 stop
$247American Airlines
Mon, Jan 12 - Thu, Jan 15
American Airlines Logo
11:13 am - 7:04 pm
BWI
-
SEA
10h 51m1 stop
American Airlines Logo
9:45 pm - 10:19 am
SEA
-
BWI
9h 34m1 stop
$248American Airlines
Thu, Jan 15 - Mon, Jan 19
American Airlines Logo
3:41 pm - 9:47 pm
BWI
-
SEA
9h 06m1 stop
American Airlines Logo
9:45 pm - 10:19 am
SEA
-
BWI
9h 34m1 stop
$249American Airlines
Tue, Jan 6 - Mon, Jan 12

Delta flights from Baltimore to Seattle

Our best Delta deals on Baltimore to Seattle flight tickets
Delta
Jan 19
BWI5:25 pmBaltimore/Washington
7h 24m
1 stop
SEA9:49 pmSeattle/Tacoma Intl
Jan 26
SEA11:10 pmSeattle/Tacoma Intl
8h 17m
1 stop
BWI10:27 amBaltimore/Washington
$228
Find similar
Delta
Jan 21
BWI3:00 pmBaltimore/Washington
8h 46m
1 stop
SEA8:46 pmSeattle/Tacoma Intl
Jan 28
SEA7:25 amSeattle/Tacoma Intl
13h 01m
2 stops
BWI11:26 pmBaltimore/Washington
$253
Find similar
Delta
Jan 20
BWI3:00 pmBaltimore/Washington
8h 46m
1 stop
SEA8:46 pmSeattle/Tacoma Intl
Jan 29
SEA7:25 amSeattle/Tacoma Intl
13h 01m
2 stops
BWI11:26 pmBaltimore/Washington
$256
Find similar

Southwest flights from Baltimore to Seattle

Our best Southwest deals on Baltimore to Seattle flight tickets
Southwest
Jan 22
BWI7:45 amBaltimore/Washington
8h 30m
1 stop
SEA1:15 pmSeattle/Tacoma Intl
Jan 31
SEA11:40 amSeattle/Tacoma Intl
15h 05m
2 stops
BWI5:45 amBaltimore/Washington
$230
Find similar
Southwest
Jan 20
BWI10:00 amBaltimore/Washington
10h 50m
1 stop
SEA5:50 pmSeattle/Tacoma Intl
Jan 27
SEA6:05 amSeattle/Tacoma Intl
8h 10m
2 stops
BWI5:15 pmBaltimore/Washington
$244
Find similar
Southwest
Jan 17
BWI1:00 pmBaltimore/Washington
11h 10m
1 stop
SEA9:10 pmSeattle/Tacoma Intl
Jan 24
SEA11:40 amSeattle/Tacoma Intl
15h 05m
2 stops
BWI5:45 amBaltimore/Washington
$250
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 December 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

Sun 1/18

11:13 am-7:04 pm

1 stop10h 51m

Seattle/Tacoma Intl

Sun 1/25

9:45 pm-10:19 am

1 stop9h 34m

$227

BaltimoreSeattle

BWI - SEA

BWISEA

Baltimore/Washington

Mon 1/19

5:25 pm-9:49 pm

1 stop7h 24m

Seattle/Tacoma Intl

Mon 1/26

11:10 pm-10:27 am

1 stop8h 17m

$228

BaltimoreSeattle

BWI - SEA

BWISEA

Baltimore/Washington

Thu 1/22

7:45 am-1:15 pm

1 stop8h 30m

Seattle/Tacoma Intl

Sat 1/31

11:40 am-5:45 am

2 stops15h 05m

$230

BaltimoreSeattle

BWI - SEA

BWISEA

Baltimore/Washington

Wed 1/21

11:13 am-8:35 pm

2 stops12h 22m

Seattle/Tacoma Intl

Thu 1/29

12:45 pm-11:21 pm

1 stop7h 36m

$233

BaltimoreSeattle

BWI - SEA

BWISEA

Baltimore/Washington

Fri 1/23

2:46 pm-11:51 pm

2 stops12h 05m

Seattle/Tacoma Intl

Tue 1/27

8:35 am-11:21 pm

2 stops11h 46m

$238

BaltimoreSeattle

BWI - SEA

BWISEA

Baltimore/Washington

Tue 1/20

10:00 am-5:50 pm

1 stop10h 50m

Seattle/Tacoma Intl

Tue 1/27

6:05 am-5:15 pm

2 stops8h 10m

$244

BaltimoreSeattle

BWI - SEA

BWISEA

Baltimore/Washington

Tue 2/17

6:43 am-12:32 pm

1 stop8h 49m

Seattle/Tacoma Intl

Sat 2/21

1:49 pm-12:07 am

1 stop7h 18m

$246

BaltimoreSeattle

BWI - SEA

BWISEA

Baltimore/Washington

Mon 1/12

2:46 pm-8:45 pm

1 stop8h 59m

Seattle/Tacoma Intl

Thu 1/15

12:45 pm-11:21 pm

1 stop7h 36m

$247

BaltimoreSeattle

BWI - SEA

BWISEA

Baltimore/Washington

Thu 1/15

11:13 am-7:04 pm

1 stop10h 51m

Seattle/Tacoma Intl

Mon 1/19

9:45 pm-10:19 am

1 stop9h 34m

$248

BaltimoreSeattle

BWI - SEA

BWISEA

Baltimore/Washington

Tue 1/6

3:41 pm-9:47 pm

1 stop9h 06m

Seattle/Tacoma Intl

Mon 1/12

9:45 pm-10:19 am

1 stop9h 34m

$249

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 $298. If you don’t want to visit Seattle in January, then you should wait until November to fly from Baltimore, when ticket prices are also cheap, with an average price of $338.

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 $436. 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 $581.

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 $514. 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 $398 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 $324 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 December 2025, prices for Baltimore to Seattle flights are approximately 45% 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

$199

Fastest flight time

5h 44m

Direct flights

Every day

Airports in Seattle

1 airport
The best one-way flight to Seattle from Baltimore in the past 72 hours is $199. The best round-trip flight deal from Baltimore to Seattle found on momondo in the last 72 hours is $374.
The fastest flight from Baltimore to Seattle takes 5h 44m
Direct flights go from Baltimore to Seattle every day.
There is 1 airport in Seattle. From Baltimore there are direct flights to 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 44m 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 $125Free CancellationRating
6.3
8,194 reviews
Search Spirit Airlines flights
FrontierPriceFrom $148Free CancellationRating
5.8
3,076 reviews
Search Frontier flights
DeltaPriceFrom $196Free CancellationRating
7.9
8,014 reviews
Search Delta flights
American AirlinesPriceFrom $197Free CancellationRating
7.2
11,053 reviews
Search American Airlines flights
United AirlinesPriceFrom $228Free CancellationRating
7.4
9,103 reviews
Search United Airlines flights
Hawaiian AirlinesPriceFrom $231Free CancellationRating
7.8
2,822 reviews
Search Hawaiian Airlines flights
SouthwestPriceFrom $236Free CancellationRating
8.0
4,253 reviews
Search Southwest flights
Alaska AirlinesPriceFrom $277Free CancellationRating
8.0
11,506 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 $277. Generally, Alaska Airlines has 5 flights on this route every week with an average price of $464. 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 12 flights out of Baltimore into Seattle in an average week, so prices vary by time and availability. 2,820 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
Redmond
Tukwila
Cle Elum
Federal Way
Lakewood
Fife
Centralia
Westport
Kirkland
Shoreline

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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