$182+ 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 7/3. Fares are subject to change and may not be available on all flights or dates of travel.
BWI — SEA
Jul 10 — Jul 171
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 52 days in advance, depart on a Tuesday or Thursday and return on a Wednesday
Cheap flight deals from Baltimore to Seattle
Cheapest
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 June 10, 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 June 10, 2026.
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.
Thu 9/175:20 pm
BWI
- SEA
1 stop8h 39m
American Airlines
Wed 9/236:40 am
SEA
- BWI
1 stop8h 01m
American Airlines
Deal found 6/10![American Airlines logo]()
$263
This Alaska 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 Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/14:43 pm
BWI
- SEA
1 stop29h 08m
Alaska Airlines
Wed 9/210:23 pm
SEA
- BWI
Nonstop5h 07m
Alaska Airlines
Deal found 6/9![Alaska Airlines logo]()
$268
This American 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 8/2611:59 am
BWI
- SEA
1 stop9h 49m
American Airlines
Wed 9/25:10 am
SEA
- BWI
1 stop7h 04m
American Airlines
Deal found 6/9![American Airlines logo]()
$273
This Southwest deal was found by Cheapflights users on 6/8. 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 9/1510:20 am
BWI
- SEA
Nonstop5h 40m
Southwest
Wed 9/2310:30 pm
SEA
- BWI
Nonstop5h 00m
Southwest
Deal found 6/8![Southwest logo]()
$281
This Southwest deal was found by Cheapflights users on 6/7. 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 8/2510:20 am
BWI
- SEA
Nonstop5h 40m
Southwest
Tue 9/111:00 pm
SEA
- BWI
1 stop9h 35m
Southwest
Deal found 6/7![Southwest logo]()
$291
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.
Tue 9/84:25 pm
BWI
- SEA
1 stop8h 34m
American Airlines
Sat 9/196:40 am
SEA
- BWI
1 stop8h 01m
American Airlines
Deal found 6/10![American Airlines logo]()
$295
This American Airlines deal was found by Cheapflights users on 6/8. 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.
Sat 8/294:28 pm
BWI
- SEA
1 stop8h 31m
American Airlines
Sat 9/57:40 am
SEA
- BWI
1 stop10h 54m
American Airlines
Deal found 6/8![American Airlines logo]()
$299
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 8/193:15 pm
BWI
- SEA
1 stop9h 00m
Southwest
Tue 8/2511:05 pm
SEA
- BWI
1 stop7h 10m
Southwest
Deal found 6/9![Southwest logo]()
$300
This Southwest deal was found by Cheapflights users on 6/8. 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 6/8![Southwest logo]()
$305
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.
Thu 9/245:20 pm
BWI
- SEA
1 stop8h 39m
American Airlines
Mon 9/2810:36 pm
SEA
- BWI
1 stop8h 08m
American Airlines
Deal found 6/10![American Airlines logo]()
$309
This Southwest 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/1510:50 am
BWI
- SEA
2 stops10h 20m
Southwest
Tue 11/174:40 pm
SEA
- BWI
2 stops10h 05m
Southwest
Deal found 6/10![Southwest logo]()
$311
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 June 10, 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 June 10, 2026.
This Alaska Airlines deal was found by Cheapflights users on 6/6. 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 8/214:43 pm
BWI
- SEA
1 stop8h 56m
Alaska Airlines
Sun 8/3010:23 pm
SEA
- BWI
Nonstop5h 07m
Alaska Airlines
Deal found 6/6![Alaska Airlines logo]()
$387
This Delta 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/86:10 pm
BWI
- SEA
1 stop8h 59m
Delta
Tue 10/135:45 pm
SEA
- BWI
1 stop9h 15m
Delta
Deal found 6/9![Delta logo]()
$394
This Southwest deal was found by Cheapflights users on 6/8. 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 9/1111:45 am
BWI
- SEA
2 stops9h 35m
Southwest
Sat 9/192:20 pm
SEA
- BWI
2 stops13h 10m
Southwest
Deal found 6/8![Southwest logo]()
$441
This Sun Country Air 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 Sun Country Air is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 8/2012:23 pm
BWI
- SEA
1 stop13h 19m
Sun Country Air
Wed 8/266:34 pm
SEA
- BWI
1 stop13h 54m
Sun Country Air
Deal found 6/10![Sun Country Air logo]()
$495
This Alaska Airlines deal was found by Cheapflights users on 6/7. 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 8/217:15 pm
BWI
- SEA
Nonstop5h 42m
Alaska Airlines
Sat 8/296:51 pm
SEA
- BWI
1 stop17h 49m
Alaska Airlines
Deal found 6/7![Alaska Airlines logo]()
$422
This Southwest deal was found by Cheapflights users on 6/8. 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 8/265:45 pm
BWI
- SEA
1 stop8h 50m
Southwest
Mon 9/75:15 am
SEA
- BWI
2 stops8h 25m
Southwest
Deal found 6/8![Southwest logo]()
$464
This Alaska 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 Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 8/166:07 pm
BWI
- SEA
Nonstop5h 53m
Alaska Airlines
Mon 8/246:51 pm
SEA
- BWI
1 stop17h 49m
Alaska Airlines
Deal found 6/9![Alaska Airlines logo]()
$422
This Delta deal was found by Cheapflights users on 6/7. 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 8/106:20 pm
BWI
- SEA
1 stop8h 37m
Delta
Mon 8/177:50 pm
SEA
- BWI
1 stop7h 30m
Delta
Deal found 6/7![Delta logo]()
$467
This Delta deal was found by Cheapflights users on 6/8. 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 7/277:10 pm
BWI
- SEA
1 stop7h 48m
Delta
Thu 7/305:59 pm
SEA
- BWI
1 stop9h 01m
Delta
Deal found 6/8![Delta logo]()
$467
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.
Sat 7/257:35 pm
BWI
- SEA
1 stop8h 40m
Southwest
Tue 8/411:05 pm
SEA
- BWI
1 stop7h 10m
Southwest
Deal found 6/9![Southwest logo]()
$467
This Alaska Airlines deal was found by Cheapflights users on 6/7. 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 8/134:19 pm
BWI
- SEA
1 stop9h 08m
Alaska Airlines
Thu 8/2010:23 pm
SEA
- BWI
Nonstop5h 07m
Alaska Airlines
Deal found 6/7![Alaska Airlines logo]()
$457
This Alaska Airlines deal was found by Cheapflights users on 6/7. 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 8/156:07 pm
BWI
- SEA
Nonstop5h 53m
Alaska Airlines
Sun 8/237:08 am
SEA
- BWI
1 stop29h 32m
Alaska Airlines
Deal found 6/7![Alaska Airlines logo]()
$490
Last-minute flights from Baltimore to SeattleDiscover last-minute flight deals from Baltimore to Seattle. Data last updated June 10, 2026 and is based on user searches.
Discover last-minute flight deals from Baltimore to Seattle. Data last updated June 10, 2026 and is based on user searches.
This American Airlines deal was found by Cheapflights users on 6/8. 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 6/246:03 am
BWI
- SEA
1 stop10h 05m
American Airlines
Fri 7/35:10 am
SEA
- BWI
1 stop9h 38m
American Airlines
Deal found 6/8![American Airlines logo]()
$390
This United Airlines deal was found by Cheapflights users on 6/7. 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 6/306:59 pm
BWI
- SEA
1 stop9h 14m
United Airlines
Wed 7/11:55 pm
SEA
- BWI
1 stop7h 33m
United Airlines
Deal found 6/7![United Airlines logo]()
$349
This American 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 7/137:17 pm
BWI
- SEA
1 stop8h 40m
American Airlines
Tue 8/185:10 am
SEA
- BWI
1 stop7h 04m
American Airlines
Deal found 6/9![American Airlines logo]()
$362
This United Airlines deal was found by Cheapflights users on 6/8. 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 7/146:38 am
BWI
- SEA
1 stop10h 52m
United Airlines
Wed 7/221:55 pm
SEA
- BWI
1 stop7h 33m
United Airlines
Deal found 6/8![United Airlines logo]()
$369
This American 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 7/211:55 pm
BWI
- SEA
1 stop9h 30m
American Airlines
Wed 7/299:35 pm
SEA
- BWI
1 stop8h 51m
American Airlines
Deal found 6/9![American Airlines logo]()
$393
This American Airlines deal was found by Cheapflights users on 6/8. 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 7/287:17 pm
BWI
- SEA
1 stop8h 40m
American Airlines
Tue 8/49:35 pm
SEA
- BWI
1 stop10h 34m
American Airlines
Deal found 6/8![American Airlines logo]()
$263
This American Airlines deal was found by Cheapflights users on 6/7. 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 7/287:17 pm
BWI
- SEA
1 stop8h 40m
American Airlines
Wed 8/129:42 pm
SEA
- BWI
1 stop10h 27m
American Airlines
Deal found 6/7![American Airlines logo]()
$309
This American Airlines deal was found by Cheapflights users on 6/8. 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 7/287:17 pm
BWI
- SEA
1 stop8h 40m
American Airlines
Wed 8/55:10 am
SEA
- BWI
1 stop9h 35m
American Airlines
Deal found 6/8![American Airlines logo]()
$326
This American Airlines deal was found by Cheapflights users on 6/8. 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 7/287:17 pm
BWI
- SEA
1 stop8h 40m
American Airlines
Mon 8/39:35 pm
SEA
- BWI
1 stop8h 51m
American Airlines
Deal found 6/8![American Airlines logo]()
$347
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 June 10, 2026.
Search for one-way flight options from Baltimore to Seattle. Find affordable one-way fares based on user searches. Data last updated June 10, 2026.
This Kiwi.com deal was found by Cheapflights users on 6/6. 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.
Fri 7/39:32 pm
BWI
- SEA
2 stops19h 46m
Frontier
Deal found 6/6![Frontier logo]()
$182
This Alaska Airlines deal was found by Cheapflights users on 6/7. 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 8/197:15 pm
BWI
- SEA
Nonstop5h 42m
Alaska Airlines
Deal found 6/7![Alaska Airlines logo]()
$189
This Kiwi.com deal was found by Cheapflights users on 6/8. 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 7/148:36 am
BWI
- SEA
2 stops27h 41m
Frontier
Deal found 6/8![Frontier logo]()
$190
This Kiwi.com deal was found by Cheapflights users on 6/7. 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 9/59:49 pm
BWI
- SEA
2 stops19h 15m
Frontier
Deal found 6/7![Frontier logo]()
$196
This deal was found by Cheapflights users on 6/6. 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 is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 11/512:32 pm
BWI
- SEA
1 stop7h 40m
Sun Country Air
Deal found 6/6![Sun Country Air logo]()
$197
This United Airlines deal was found by Cheapflights users on 6/7. 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 8/238:00 am
BWI
- SEA
1 stop11h 14m
United Airlines
Deal found 6/7![United Airlines logo]()
$198
This Delta deal was found by Cheapflights users on 6/7. 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 8/196:15 am
BWI
- SEA
1 stop7h 16m
Delta
Deal found 6/7![Delta logo]()
$199
This American Airlines deal was found by Cheapflights users on 6/7. 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 6/215:01 am
BWI
- SEA
1 stop7h 49m
American Airlines
Deal found 6/7![American Airlines logo]()
$200
This Kiwi.com deal was found by Cheapflights users on 6/7. 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 9/289:20 pm
BWI
- SEA
2 stops39h 40m
Frontier
Deal found 6/7![Frontier logo]()
$201
This Kiwi.com deal was found by Cheapflights users on 6/7. 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 7/49:32 pm
BWI
- SEA
2 stops38h 45m
Frontier
Deal found 6/7![Frontier logo]()
$203
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 June 10, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $263 (American Airlines) |
One-way from | $182 (Kiwi.com) |
Popular in | June |
Cheapest in | February |
Average price | $507 |
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 June 10, 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
Fri 8/21
4:43 pm-10:39 pm
1 stop8h 56m
Seattle/Tacoma Intl
Sun 8/30
10:23 pm-6:30 am
Nonstop5h 07m
$387
BaltimoreSeattle
BWI - SEA
BWISEA
Baltimore/Washington
Thu 10/8
6:10 pm-12:09 am
1 stop8h 59m
Seattle/Tacoma Intl
Tue 10/13
5:45 pm-6:00 am
1 stop9h 15m
$394
BaltimoreSeattle
BWI - SEA
BWISEA
Baltimore/Washington
Fri 8/21
7:15 pm-9:57 pm
Nonstop5h 42m
Seattle/Tacoma Intl
Sat 8/29
6:51 pm-3:40 pm
1 stop17h 49m
$422
BaltimoreSeattle
BWI - SEA
BWISEA
Baltimore/Washington
Sun 8/16
6:07 pm-9:00 pm
Nonstop5h 53m
Seattle/Tacoma Intl
Mon 8/24
6:51 pm-3:40 pm
1 stop17h 49m
$422
BaltimoreSeattle
BWI - SEA
BWISEA
Baltimore/Washington
Fri 9/11
11:45 am-6:20 pm
2 stops9h 35m
Seattle/Tacoma Intl
Sat 9/19
2:20 pm-6:30 am
2 stops13h 10m
$441
BaltimoreSeattle
BWI - SEA
BWISEA
Baltimore/Washington
Thu 8/13
4:19 pm-10:27 pm
1 stop9h 08m
Seattle/Tacoma Intl
Thu 8/20
10:23 pm-6:30 am
Nonstop5h 07m
$457
BaltimoreSeattle
BWI - SEA
BWISEA
Baltimore/Washington
Wed 8/26
5:45 pm-11:35 pm
1 stop8h 50m
Seattle/Tacoma Intl
Mon 9/7
5:15 am-4:40 pm
2 stops8h 25m
$464
BaltimoreSeattle
BWI - SEA
BWISEA
Baltimore/Washington
Mon 8/10
6:20 pm-11:57 pm
1 stop8h 37m
Seattle/Tacoma Intl
Mon 8/17
7:50 pm-6:20 am
1 stop7h 30m
$467
BaltimoreSeattle
BWI - SEA
BWISEA
Baltimore/Washington
Mon 7/27
7:10 pm-11:58 pm
1 stop7h 48m
Seattle/Tacoma Intl
Thu 7/30
5:59 pm-6:00 am
1 stop9h 01m
$467
BaltimoreSeattle
BWI - SEA
BWISEA
Baltimore/Washington
Sat 7/25
7:35 pm-1:15 am
1 stop8h 40m
Seattle/Tacoma Intl
Tue 8/4
11:05 pm-9:15 am
1 stop7h 10m
$467
Showing 1-10 of 24 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 June.
| Provider | Price Accuracy | Trust Score* |
|---|---|---|
| Price Accuracy1 star | Trust Score*3 stars | |
| Price Accuracy3 stars | Trust Score*3 stars | |
| Price Accuracy1 star | Trust Score*3 stars | |
| Price Accuracy- | Trust Score*1 star | |
| Price Accuracy2 stars | Trust Score*1 star | |
| Price Accuracy3 stars | Trust Score*3 stars | |
| Price Accuracy2 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
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How far ahead should I book a flight from Baltimore to Seattle?
The best time to book flights from Baltimore to Seattle is 51 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 June is currently the most expensive (average of $507). 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 June 10, 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 25% on your trip compared to booking a flight at noon.
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.
Detroit (DTW) – chosen by Cheapflights users on 50% 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 June 10, 2026.
Get a feel of what it's like to fly with Alaska Airlines,Southwest, 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.
Food
7.0
Boarding
8.1
Entertainment
7.0
Crew
8.5
Overall
7.9
Comfort
7.8
Reviews
1 / 20
8.0
ExcellentAnonymous,Jun 2026
RDU - SEA
Food
7.0
Boarding
8.1
Entertainment
7.0
Crew
8.5
Overall
7.9
Comfort
7.8
Reviews
1 / 20
8.0
ExcellentAnonymous,Jun 2026
RDU - SEA
Food
7.0
Boarding
8.1
Entertainment
7.0
Crew
8.5
Overall
7.9
Comfort
7.8
Reviews
1 / 20
8.0
ExcellentAnonymous,Jun 2026
RDU - SEA
Food
7.0
Boarding
8.1
Entertainment
7.0
Crew
8.5
Overall
7.9
Comfort
7.8
Reviews
1 / 20
8.0
ExcellentAnonymous,Jun 2026
RDU - SEA
Food
7.0
Boarding
8.1
Entertainment
7.0
Crew
8.5
Overall
7.9
Comfort
7.8
Reviews
1 / 20
8.0
ExcellentAnonymous,Jun 2026
RDU - SEA
Food
7.0
Boarding
8.1
Entertainment
7.0
Crew
8.5
Overall
7.9
Comfort
7.8
Reviews
1 / 20
8.0
ExcellentAnonymous,Jun 2026
RDU - SEA
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
Lacey
Ocean Shores
Leavenworth
Olympia
Edmonds
Snoqualmie
Tumwater
Tukwila
Puyallup
Kent
Lynnwood
Renton
Ellensburg
Fife
Lakewood
Issaquah
Marysville
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 June 10, 2026.
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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 June 10, 2026.
Top 9 airlines flying from Baltimore to Seattle
Discover the top 9 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 June 10, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$100 | Average$294 | FlexibilityNo cancel fee | On-timeN/A | |
| Cheapest$137 | Average$278 | FlexibilityNo cancel fee | On-time62% | |
| Cheapest$158 | Average$410 | FlexibilityNo cancel fee | On-time85% | |
| Cheapest$179 | Average$300 | FlexibilityNo cancel fee | On-time71% | |
| Cheapest$219 | Average$369 | FlexibilityNo cancel fee | On-time62% | |
| Cheapest$226 | Average$451 | FlexibilityNo cancel fee | On-time63% | |
| Cheapest$228 | Average$381 | FlexibilityNo cancel fee | On-time69% | |
| Cheapest$260 | Average$436 | FlexibilityNo cancel fee | On-time75% | |
| Cheapest$295 | Average$426 | FlexibilityNo cancel fee | On-time83% |