$80+ Cheap flights from Baltimore to Seattle (BWI - SEA)
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 6/2. Fares are subject to change and may not be available on all flights or dates of travel.
BWI — SEA
May 23 — May 301
Round-trip
1 adult, Economy
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Find cheap flights from Baltimore to Seattle with Cheapflights
1. Tell us where you want to go
Enter your travel information like dates, passengers, trip type (one-way or round trip), and preferred cabin class then click “Find deals”2. Select your favorite providers
We find the providers serving your travel needs. Choose up to four travel providers to compare side-by-side for flights, hotels, or car rentals.3. Compare prices and book
Review each provider’s pricing and select the best option for you! Book through your favorite provider’s website for a seamless experience.Cheapflights Tip: The best prices from Baltimore/Washington to Seattle/Tacoma Intl are usually found in February or January, booked 34 days in advance, depart on a Tuesday or Thursday and return on a Wednesday
Cheap flight deals from Baltimore to Seattle
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Best
Last-minute
One-way
Cheapest flights from Baltimore to SeattleExplore the most affordable flight options available from Baltimore to Seattle. Find the lowest fares from popular airlines and budget airlines, with prices last updated on April 23, 2026.
Explore the most affordable flight options available from Baltimore to Seattle. Find the lowest fares from popular airlines and budget airlines, with prices last updated on April 23, 2026.
This Southwest deal was found by Cheapflights users on 4/20. 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 8/2910:45 am
BWI
- SEA
1 stop9h 05m
Southwest
Tue 9/15:30 pm
SEA
- BWI
1 stop10h 05m
Southwest
Deal found 4/20![Southwest logo]()
$205
This Southwest deal was found by Cheapflights users on 4/20. 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 9/1610:20 am
BWI
- SEA
Nonstop5h 40m
Southwest
Wed 9/2310:30 pm
SEA
- BWI
Nonstop5h 00m
Southwest
Deal found 4/20![Southwest logo]()
$207
This Southwest deal was found by Cheapflights users on 4/21. 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 8/192:55 pm
BWI
- SEA
1 stop11h 30m
Southwest
Tue 8/2510:30 pm
SEA
- BWI
Nonstop5h 00m
Southwest
Deal found 4/21![Southwest logo]()
$208
This Alaska Airlines deal was found by Cheapflights users on 4/20. 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.
Sat 9/1211:25 am
BWI
- SEA
2 stops10h 23m
Alaska Airlines
Mon 9/1412:15 am
SEA
- BWI
1 stop7h 40m
Alaska Airlines
Deal found 4/20![Alaska Airlines logo]()
$210
This Southwest deal was found by Cheapflights users on 4/21. 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 8/129:10 am
BWI
- SEA
1 stop12h 25m
Southwest
Wed 8/195:20 am
SEA
- BWI
1 stop7h 10m
Southwest
Deal found 4/21![Southwest logo]()
$211
This Southwest deal was found by Cheapflights users on 4/21. 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 8/1810:50 am
BWI
- SEA
2 stops10h 20m
Southwest
Thu 8/2710:30 pm
SEA
- BWI
Nonstop5h 00m
Southwest
Deal found 4/21![Southwest logo]()
$212
This Southwest deal was found by Cheapflights users on 4/20. 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 8/1810:50 am
BWI
- SEA
2 stops10h 20m
Southwest
Mon 8/315:50 pm
SEA
- BWI
1 stop9h 45m
Southwest
Deal found 4/20![Southwest logo]()
$214
This Southwest deal was found by Cheapflights users on 4/22. 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 8/116:35 am
BWI
- SEA
1 stop8h 40m
Southwest
Wed 8/1910:30 pm
SEA
- BWI
Nonstop5h 00m
Southwest
Deal found 4/22![Southwest logo]()
$215
This American Airlines deal was found by Cheapflights users on 4/21. 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.
Tue 6/25:01 am
BWI
- SEA
1 stop7h 49m
American Airlines
Tue 6/97:10 am
SEA
- BWI
1 stop7h 37m
American Airlines
Deal found 4/21![American Airlines logo]()
$216
This Delta deal was found by Cheapflights users on 4/20. 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 10/136:59 pm
BWI
- SEA
1 stop8h 00m
Delta
Tue 10/2011:05 pm
SEA
- BWI
1 stop6h 32m
Delta
Deal found 4/20![Delta logo]()
$217
This Southwest deal was found by Cheapflights users on 4/20. 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 8/182:55 pm
BWI
- SEA
1 stop11h 30m
Southwest
Tue 8/2510:30 pm
SEA
- BWI
Nonstop5h 00m
Southwest
Deal found 4/20![Southwest logo]()
$219
This Southwest deal was found by Cheapflights users on 4/20. 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 8/1810:30 am
BWI
- SEA
1 stop10h 00m
Southwest
Mon 8/247:30 pm
SEA
- BWI
1 stop8h 05m
Southwest
Deal found 4/20![Southwest logo]()
$220
Best flights from Baltimore to SeattleDiscover carefully curated flight deals from Baltimore to Seattle that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated April 23, 2026.
Discover carefully curated flight deals from Baltimore to Seattle that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated April 23, 2026.
This Alaska Airlines deal was found by Cheapflights users on 4/22. 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.
Wed 6/37:35 pm
BWI
- SEA
Nonstop5h 51m
Alaska Airlines
Mon 6/810:20 pm
SEA
- BWI
Nonstop5h 08m
Alaska Airlines
Deal found 4/22![Alaska Airlines logo]()
$347
This Southwest deal was found by Cheapflights users on 4/19. 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.
Thu 5/289:40 am
BWI
- SEA
1 stop15h 55m
Southwest
Thu 6/49:25 pm
SEA
- BWI
Nonstop4h 55m
Southwest
Deal found 4/19![Southwest logo]()
$368
This Delta deal was found by Cheapflights users on 4/20. 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 6/107:13 pm
BWI
- SEA
1 stop7h 46m
Delta
Wed 6/1711:50 am
SEA
- BWI
1 stop8h 28m
Delta
Deal found 4/20![Delta logo]()
$369
This United Airlines deal was found by Cheapflights users on 4/19. 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.
Sun 5/246:38 am
BWI
- SEA
1 stop8h 56m
United Airlines
Mon 6/810:40 pm
SEA
- BWI
1 stop7h 37m
United Airlines
Deal found 4/19![United Airlines logo]()
$453
This Alaska Airlines deal was found by Cheapflights users on 4/20. 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.
Wed 5/277:35 pm
BWI
- SEA
Nonstop5h 51m
Alaska Airlines
Sun 5/3110:20 pm
SEA
- BWI
Nonstop5h 08m
Alaska Airlines
Deal found 4/20![Alaska Airlines logo]()
$377
This Southwest deal was found by Cheapflights users on 4/22. 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 7/146:40 pm
BWI
- SEA
1 stop8h 50m
Southwest
Thu 7/235:15 am
SEA
- BWI
2 stops9h 30m
Southwest
Deal found 4/22![Southwest logo]()
$382
This Delta deal was found by Cheapflights users on 4/20. 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.
Thu 5/285:26 pm
BWI
- SEA
1 stop8h 22m
Delta
Thu 6/412:00 pm
SEA
- BWI
1 stop8h 46m
Delta
Deal found 4/20![Delta logo]()
$388
This Southwest deal was found by Cheapflights users on 4/18. 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.
Mon 6/14:35 pm
BWI
- SEA
2 stops11h 20m
Southwest
Tue 6/911:05 pm
SEA
- BWI
1 stop6h 45m
Southwest
Deal found 4/18![Southwest logo]()
$408
This Alaska Airlines deal was found by Cheapflights users on 4/23. 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 Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 7/34:19 pm
BWI
- SEA
1 stop7h 14m
Alaska Airlines
Wed 7/159:36 pm
SEA
- BWI
Nonstop5h 05m
Alaska Airlines
Deal found 4/23![Alaska Airlines logo]()
$418
This Alaska Airlines deal was found by Cheapflights users on 4/19. 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.
Mon 6/14:17 pm
BWI
- SEA
1 stop16h 45m
Alaska Airlines
Wed 6/109:36 pm
SEA
- BWI
Nonstop5h 05m
Alaska Airlines
Deal found 4/19![Alaska Airlines logo]()
$420
This Southwest deal was found by Cheapflights users on 4/20. 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 6/95:20 pm
BWI
- SEA
2 stops10h 00m
Southwest
Tue 6/2311:05 pm
SEA
- BWI
1 stop9h 05m
Southwest
Deal found 4/20![Southwest logo]()
$422
This Southwest deal was found by Cheapflights users on 4/18. 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 6/28:50 am
BWI
- SEA
2 stops14h 30m
Southwest
Tue 6/96:15 am
SEA
- BWI
2 stops11h 05m
Southwest
Deal found 4/18![Southwest logo]()
$454
Last-minute flights from Baltimore to SeattleDiscover last-minute flight deals from Baltimore to Seattle. Data last updated April 23, 2026 and is based on user searches.
Discover last-minute flight deals from Baltimore to Seattle. Data last updated April 23, 2026 and is based on user searches.
This American Airlines deal was found by Cheapflights users on 4/21. 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.
Tue 5/57:00 am
BWI
- SEA
1 stop9h 15m
American Airlines
Tue 5/121:19 pm
SEA
- BWI
1 stop7h 47m
American Airlines
Deal found 4/21![American Airlines logo]()
$229
This Delta deal was found by Cheapflights users on 4/20. 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 5/57:15 am
BWI
- SEA
1 stop10h 31m
Delta
Tue 6/211:05 pm
SEA
- BWI
1 stop6h 28m
Delta
Deal found 4/20![Delta logo]()
$258
This Delta deal was found by Cheapflights users on 4/20. 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 5/65:33 pm
BWI
- SEA
1 stop9h 43m
Delta
Mon 5/117:59 pm
SEA
- BWI
1 stop6h 46m
Delta
Deal found 4/20![Delta logo]()
$248
This American Airlines deal was found by Cheapflights users on 4/22. 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.
Thu 5/75:39 am
BWI
- SEA
1 stop9h 50m
American Airlines
Tue 5/121:19 pm
SEA
- BWI
1 stop7h 47m
American Airlines
Deal found 4/22![American Airlines logo]()
$249
This CheapOair deal was found by Cheapflights users on 4/21. 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 CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 5/277:48 am
BWI
- SEA
Nonstop5h 51m
Alaska Airlines
Thu 5/2810:20 pm
SEA
- BWI
Nonstop5h 08m
Alaska Airlines
Deal found 4/21![Alaska Airlines logo]()
$224
This United Airlines deal was found by Cheapflights users on 4/21. 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 5/276:38 am
BWI
- SEA
1 stop8h 56m
United Airlines
Mon 6/110:40 pm
SEA
- BWI
1 stop7h 37m
United Airlines
Deal found 4/21![United Airlines logo]()
$232
This Alaska Airlines deal was found by Cheapflights users on 4/21. 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.
Wed 5/277:48 am
BWI
- SEA
Nonstop5h 51m
Alaska Airlines
Mon 6/110:20 pm
SEA
- BWI
Nonstop5h 08m
Alaska Airlines
Deal found 4/21![Alaska Airlines logo]()
$251
This CheapOair deal was found by Cheapflights users on 4/19. 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 CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 5/277:35 pm
BWI
- SEA
Nonstop5h 51m
Alaska Airlines
Fri 6/510:20 pm
SEA
- BWI
Nonstop5h 08m
Alaska Airlines
Deal found 4/19![Alaska Airlines logo]()
$257
This United Airlines deal was found by Cheapflights users on 4/21. 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.
Thu 5/286:59 pm
BWI
- SEA
1 stop9h 30m
United Airlines
Tue 6/210:40 pm
SEA
- BWI
1 stop7h 37m
United Airlines
Deal found 4/21![United Airlines logo]()
$237
This United Airlines deal was found by Cheapflights users on 4/21. 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 5/297:00 am
BWI
- SEA
1 stop10h 36m
United Airlines
Tue 6/210:40 pm
SEA
- BWI
1 stop7h 37m
United Airlines
Deal found 4/21![United Airlines logo]()
$247
This American Airlines deal was found by Cheapflights users on 4/21. 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.
Fri 5/297:10 pm
BWI
- SEA
1 stop8h 49m
American Airlines
Fri 6/511:58 pm
SEA
- BWI
1 stop7h 05m
American Airlines
Deal found 4/21![American Airlines logo]()
$259
One-way flights from Baltimore to SeattleSearch for one-way flight options from Baltimore to Seattle. Find affordable one-way fares based on user searches. Data last updated April 23, 2026.
Search for one-way flight options from Baltimore to Seattle. Find affordable one-way fares based on user searches. Data last updated April 23, 2026.
This American Airlines deal was found by Cheapflights users on 4/21. 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.
Tue 6/25:01 am
BWI
- SEA
1 stop7h 49m
American Airlines
Deal found 4/21![American Airlines logo]()
$80
This Alaska Airlines deal was found by Cheapflights users on 4/21. 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 5/287:35 pm
BWI
- SEA
Nonstop5h 51m
Alaska Airlines
Deal found 4/21![Alaska Airlines logo]()
$93
This Delta deal was found by Cheapflights users on 4/21. 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 6/97:13 pm
BWI
- SEA
1 stop7h 46m
Delta
Deal found 4/21![Delta logo]()
$99
This American Airlines deal was found by Cheapflights users on 4/20. 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.
Tue 7/147:16 pm
BWI
- SEA
1 stop8h 41m
American Airlines
Deal found 4/20![American Airlines logo]()
$109
This United Airlines deal was found by Cheapflights users on 4/21. 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.
Thu 5/287:00 am
BWI
- SEA
1 stop10h 36m
United Airlines
Deal found 4/21![United Airlines logo]()
$119
This Kiwi.com deal was found by Cheapflights users on 4/23. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 5/128:52 am
BWI
- SEA
2 stops27h 57m
Frontier
Deal found 4/23![Frontier logo]()
$124
This Kiwi.com deal was found by Cheapflights users on 4/19. 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 5/1010:29 am
BWI
- SEA
2 stops50h 20m
Frontier
Deal found 4/19![Frontier logo]()
$129
This Delta deal was found by Cheapflights users on 4/22. 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 6/82:10 pm
BWI
- SEA
1 stop10h 39m
Delta
Deal found 4/22![Delta logo]()
$130
This Kiwi.com deal was found by Cheapflights users on 4/22. 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 5/115:17 pm
BWI
- SEA
2 stops19h 32m
Frontier
Deal found 4/22![Frontier logo]()
$131
This Kiwi.com deal was found by Cheapflights users on 4/22. 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.
Tue 6/99:13 pm
BWI
- SEA
2 stops24h 13m
Multiple Airlines
Deal found 4/22![Multiple Airlines logo]()
$135
This American Airlines deal was found by Cheapflights users on 4/21. 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.
Fri 6/57:10 pm
BWI
- SEA
1 stop8h 49m
American Airlines
Deal found 4/21![American Airlines logo]()
$137
Find flight deals from Baltimore to Seattle
Discover tips and strategies to find the most affordable flight options for your journey from Baltimore (BWI) to Seattle (SEA). 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 April 23, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $205 (Southwest) |
One-way from | $80 (American Airlines) |
Popular in | July |
Cheapest in | February |
Average price | $397 |
Cheapflights 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, Cheapflights users made 2,558,603 searches. Data last updated April 23, 2026.
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
Cheapest round-trip
Quickest round-trip
BaltimoreSeattle
BWI - SEA
BWISEA
Baltimore/Washington
Wed 6/3
7:35 pm-10:26 pm
Nonstop5h 51m
Seattle/Tacoma Intl
Mon 6/8
10:20 pm-6:28 am
Nonstop5h 08m
$347
BaltimoreSeattle
BWI - SEA
BWISEA
Baltimore/Washington
Thu 5/28
9:40 am-10:35 pm
1 stop15h 55m
Seattle/Tacoma Intl
Thu 6/4
9:25 pm-5:20 am
Nonstop4h 55m
$368
BaltimoreSeattle
BWI - SEA
BWISEA
Baltimore/Washington
Wed 6/10
7:13 pm-11:59 pm
1 stop7h 46m
Seattle/Tacoma Intl
Wed 6/17
11:50 am-11:18 pm
1 stop8h 28m
$369
BaltimoreSeattle
BWI - SEA
BWISEA
Baltimore/Washington
Wed 5/27
7:35 pm-10:26 pm
Nonstop5h 51m
Seattle/Tacoma Intl
Sun 5/31
10:20 pm-6:28 am
Nonstop5h 08m
$377
BaltimoreSeattle
BWI - SEA
BWISEA
Baltimore/Washington
Tue 7/14
6:40 pm-12:30 am
1 stop8h 50m
Seattle/Tacoma Intl
Thu 7/23
5:15 am-5:45 pm
2 stops9h 30m
$382
BaltimoreSeattle
BWI - SEA
BWISEA
Baltimore/Washington
Thu 5/28
5:26 pm-10:48 pm
1 stop8h 22m
Seattle/Tacoma Intl
Thu 6/4
12:00 pm-11:46 pm
1 stop8h 46m
$388
BaltimoreSeattle
BWI - SEA
BWISEA
Baltimore/Washington
Mon 6/1
4:35 pm-12:55 am
2 stops11h 20m
Seattle/Tacoma Intl
Tue 6/9
11:05 pm-8:50 am
1 stop6h 45m
$408
BaltimoreSeattle
BWI - SEA
BWISEA
Baltimore/Washington
Fri 7/3
4:19 pm-8:33 pm
1 stop7h 14m
Seattle/Tacoma Intl
Wed 7/15
9:36 pm-5:41 am
Nonstop5h 05m
$418
BaltimoreSeattle
BWI - SEA
BWISEA
Baltimore/Washington
Mon 6/1
4:17 pm-6:02 am
1 stop16h 45m
Seattle/Tacoma Intl
Wed 6/10
9:36 pm-5:41 am
Nonstop5h 05m
$420
BaltimoreSeattle
BWI - SEA
BWISEA
Baltimore/Washington
Tue 6/9
5:20 pm-12:20 am
2 stops10h 00m
Seattle/Tacoma Intl
Tue 6/23
11:05 pm-11:10 am
1 stop9h 05m
$422
Showing 1-10 of 23 resultsSorted by cheapest first
Compare providers for flights from Baltimore to Seattle
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 Baltimore to Seattle in April.
| Provider | Price Accuracy | Trust Score* |
|---|---|---|
| Price Accuracy1 star | Trust Score*3 stars | |
| Price Accuracy3 stars | Trust Score*3 stars | |
| Price Accuracy3 stars | Trust Score*3 stars | |
| Price Accuracy3 stars | Trust Score*3 stars | |
| Price Accuracy2 stars | Trust Score*2 stars | |
| Price Accuracy- | Trust Score*1 star | |
| Price Accuracy3 stars | Trust Score*3 stars | |
| Price Accuracy1 star | Trust Score*3 stars | |
| Price Accuracy3 stars | Trust Score*3 stars |
- Most accurate provider: When it comes to deals on Baltimore-Seattle flights, users find the pricing of FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on Baltimore-Seattle flight deals on Cheapflights vs. FlightHub >95% of the time. Price accuracy is based on data collected from Baltimore-Seattle flight searches over the past month and is updated monthly.
- Most trusted provider: When it comes to deals on Baltimore-Seattle 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 Baltimore-Seattle 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 Baltimore to Seattle
Have a flexible travel schedule? Discover the best time to fly to Seattle from Baltimore with our price prediction graph.
BWI-SEA
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 Baltimore to Seattle
Prices
More
How far ahead should I book a flight from Baltimore to Seattle?
Use this chart to determine the optimal time to book a round-trip flight from Baltimore to Seattle. Price data was last updated on April 17, 2026.
The best time to book flights from Baltimore to Seattle is 34 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 Baltimore to Seattle?
Currently, February is the cheapest month in which you can book a flight from Baltimore to Seattle (average of $298). Flying from Baltimore to Seattle in July is currently the most expensive (average of $472). 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 BWI to SEA?
Find hourly flight availability from Baltimore to Seattle. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated April 23, 2026.
A simple way to save on the total cost of your ticket is to fly from Baltimore to Seattle in the evening. If you’re flexible enough to do this you can expect to save up to 10% on your trip compared to booking a flight in the afternoon.
What’s the top layover airport for flights from Baltimore to Seattle?
Share of 1-stop round-trip flights from Baltimore to Seattle chosen by Cheapflights users in the past 12 months, using the same layover each way.
Denver (DEN) – chosen by Cheapflights users on 65% of 1-stop itineraries from Baltimore to Seattle on Cheapflights.
What’s the cheapest layover airport for flights from Baltimore to Seattle?
Average round-trip fare for 1-stop flights from Baltimore to Seattle, chosen by Cheapflights users in the past 12 months, with the same layover each way.
Detroit (DTW) is the most affordable 1-stop option, with an average round-trip price of $219.
What’s the fastest layover option from Baltimore to Seattle?
Shortest average travel time for 1-stop one-way flights from Baltimore to Seattle, based on itineraries clicked by Cheapflights users over the past 12 months, grouped by layover airport.
Flights via Detroit (DTW) have the shortest average one-way travel time for 1-stop routes: 7h 24m.
Which airport typically offers the quickest layover for flights from Baltimore to Seattle?
Average layover duration for 1-stop one-way flights from Baltimore to Seattle, chosen by Cheapflights users in the last 12 months, grouped by stopover airport.
Flights via Detroit (DTW) offer the fastest connection on this route, with an average layover time of 0h 43m.
The best insider tips for Baltimore to Seattle flights
AI-powered summary based on content written by travel experts. AI can make mistakes.
Cheapflights partnered with top experts to bring you the best recommendations for your Baltimore to Seattle trip
Our travel experts
Reviews of airlines servicing Seattle
Get insights into the airlines that provide service to Seattle. 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 Seattle. Reviews last updated April 23, 2026.
Get a feel of what it's like to fly with Southwest,Alaska Airlines, andDelta from Baltimore to Seattle by reading reviews from past customers. Users have also rated airlines in terms of entertainment options, comfort, food, crew/service, and boarding process.
Boarding
8.1
Overall
8.0
Crew
8.6
Entertainment
7.5
Food
7.0
Comfort
8.0
Reviews
1 / 20
2.0
MediocreDominic,Mar 2026
MCO - SMF
Boarding
8.1
Overall
8.0
Crew
8.6
Entertainment
7.5
Food
7.0
Comfort
8.0
Reviews
1 / 20
2.0
MediocreDominic,Mar 2026
MCO - SMF
Boarding
8.1
Overall
8.0
Crew
8.6
Entertainment
7.5
Food
7.0
Comfort
8.0
Reviews
1 / 20
2.0
MediocreDominic,Mar 2026
MCO - SMF
Boarding
8.1
Overall
8.0
Crew
8.6
Entertainment
7.5
Food
7.0
Comfort
8.0
Reviews
1 / 20
2.0
MediocreDominic,Mar 2026
MCO - SMF
Boarding
8.1
Overall
8.0
Crew
8.6
Entertainment
7.5
Food
7.0
Comfort
8.0
Reviews
1 / 20
2.0
MediocreDominic,Mar 2026
MCO - SMF
Boarding
8.1
Overall
8.0
Crew
8.6
Entertainment
7.5
Food
7.0
Comfort
8.0
Reviews
1 / 20
2.0
MediocreDominic,Mar 2026
MCO - SMF
Related info for your journey
Find useful and relevant information for your journey from Baltimore to Seattle. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.
Traveling to a place near Seattle?
Book flights to Seattle if you plan to visit one of these locationsSeaTac
Tacoma
Ocean Shores
Olympia
Lynnwood
Lacey
Edmonds
Leavenworth
Snoqualmie
Kent
Tumwater
Tukwila
Puyallup
Renton
Kirkland
Ellensburg
Fife
Lakewood
Issaquah
Shoreline
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Search flights from Baltimore to Seattle by cabin class
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Baltimore and Seattle flights
Browse other Baltimore and Seattle flight options. Last updated on April 23, 2026.
Popular flight searches
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Other flights to Seattle
Explore flights to Seattle departing from other origins. Flights are based on user searches made on Cheapflights and were last updated on April 23, 2026.
Top 10 airlines flying from Baltimore to Seattle
Discover the top 10 airlines that operate flights from Baltimore to Seattle. 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 April 23, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$103 | Average$299 | FlexibilityNo cancel fee | On-timeN/A | |
| Cheapest$126 | Average$279 | FlexibilityNo cancel fee | On-time65% | |
| Cheapest$137 | Average$228 | FlexibilityNo cancel fee | On-time62% | |
| Cheapest$158 | Average$400 | FlexibilityNo cancel fee | On-time85% | |
| Cheapest$179 | Average$298 | FlexibilityNo cancel fee | On-time71% | |
| Cheapest$186 | Average$388 | FlexibilityNo cancel fee | On-time83% | |
| Cheapest$209 | Average$365 | FlexibilityNo cancel fee | On-time69% | |
| Cheapest$219 | Average$369 | FlexibilityNo cancel fee | On-time62% | |
| Cheapest$236 | Average$457 | FlexibilityNo cancel fee | On-time63% | |
| Cheapest$269 | Average$440 | FlexibilityNo cancel fee | On-time75% |