$104+ Cheap flights from Seattle to Baltimore (SEA - BWI)
This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 5/9. Fares are subject to change and may not be available on all flights or dates of travel.
SEA — BWI
May 18 — May 251
Round-trip
1 adult, Economy
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Find cheap flights from Seattle to Baltimore 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 Seattle/Tacoma Intl to Baltimore/Washington are usually found in September or February, booked 84 days in advance, depart on a Wednesday or Tuesday and return on a Tuesday
Cheap flight deals from Seattle to Baltimore
Cheapest
Best
Last-minute
One-way
Cheapest flights from Seattle to BaltimoreExplore the most affordable flight options available from Seattle to Baltimore. Find the lowest fares from popular airlines and budget airlines, with prices last updated on April 18, 2026.
Explore the most affordable flight options available from Seattle to Baltimore. Find the lowest fares from popular airlines and budget airlines, with prices last updated on April 18, 2026.
This Delta deal was found by Cheapflights users on 4/14. 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 10/277:35 pm
SEA
- BWI
1 stop7h 25m
Delta
Wed 10/2810:00 am
BWI
- SEA
1 stop9h 33m
Delta
Deal found 4/14![Delta logo]()
$211
This Delta deal was found by Cheapflights users on 4/17. 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.
Fri 6/55:45 pm
SEA
- BWI
1 stop9h 00m
Delta
Tue 6/95:32 pm
BWI
- SEA
1 stop8h 02m
Delta
Deal found 4/17![Delta logo]()
$217
This Southwest deal was found by Cheapflights users on 4/15. 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 7/287:30 pm
SEA
- BWI
1 stop6h 45m
Southwest
Mon 8/3112:20 pm
BWI
- SEA
Nonstop5h 40m
Southwest
Deal found 4/15![Southwest logo]()
$238
This American Airlines deal was found by Cheapflights users on 4/16. 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 am
SEA
- BWI
1 stop7h 37m
American Airlines
Tue 6/25:01 am
BWI
- SEA
1 stop7h 49m
American Airlines
Deal found 4/16![American Airlines logo]()
$248
This American Airlines 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 6/29:35 pm
SEA
- BWI
1 stop8h 51m
American Airlines
Tue 6/95:01 am
BWI
- SEA
1 stop7h 49m
American Airlines
Deal found 4/18![American Airlines logo]()
$249
This Alaska Airlines deal was found by Cheapflights users on 4/14. 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 9/96:48 pm
SEA
- BWI
1 stop17h 46m
Alaska Airlines
Wed 9/166:16 pm
BWI
- SEA
Nonstop5h 44m
Alaska Airlines
Deal found 4/14![Alaska Airlines logo]()
$252
This Southwest deal was found by Cheapflights users on 4/15. 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 5/46:15 pm
SEA
- BWI
1 stop8h 25m
Southwest
Wed 5/612:40 pm
BWI
- SEA
1 stop8h 50m
Southwest
Deal found 4/15![Southwest logo]()
$253
This Alaska Airlines deal was found by Cheapflights users on 4/17. 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 6/510:20 pm
SEA
- BWI
Nonstop5h 08m
Alaska Airlines
Sat 6/67:35 pm
BWI
- SEA
Nonstop5h 51m
Alaska Airlines
Deal found 4/17![Alaska Airlines logo]()
$257
This American Airlines deal was found by Cheapflights users on 4/14. 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 4/287:00 am
SEA
- BWI
1 stop8h 00m
American Airlines
Tue 5/55:39 am
BWI
- SEA
1 stop9h 50m
American Airlines
Deal found 4/14![American Airlines logo]()
$258
This American Airlines deal was found by Cheapflights users on 4/15. 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 5/110:29 pm
SEA
- BWI
1 stop7h 23m
American Airlines
Wed 5/67:17 pm
BWI
- SEA
1 stop8h 27m
American Airlines
Deal found 4/15![American Airlines logo]()
$259
This American Airlines deal was found by Cheapflights users on 4/14. 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 9/95:49 am
SEA
- BWI
1 stop8h 58m
American Airlines
Wed 9/166:09 pm
BWI
- SEA
1 stop7h 47m
American Airlines
Deal found 4/14![American Airlines logo]()
$260
This Delta deal was found by Cheapflights users on 4/16. 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 6/412:00 pm
SEA
- BWI
1 stop8h 46m
Delta
Wed 6/107:13 pm
BWI
- SEA
1 stop7h 46m
Delta
Deal found 4/16![Delta logo]()
$268
Best flights from Seattle to BaltimoreDiscover carefully curated flight deals from Seattle to Baltimore that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated April 18, 2026.
Discover carefully curated flight deals from Seattle to Baltimore that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated April 18, 2026.
This Delta deal was found by Cheapflights users on 4/16. 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 6/47:59 pm
SEA
- BWI
1 stop6h 46m
Delta
Mon 6/811:54 am
BWI
- SEA
1 stop10h 10m
Delta
Deal found 4/16![Delta logo]()
$217
This Southwest deal was found by Cheapflights users on 4/13. 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 6/211:45 pm
SEA
- BWI
2 stops9h 05m
Southwest
Tue 6/96:30 pm
BWI
- SEA
1 stop8h 50m
Southwest
Deal found 4/13![Southwest logo]()
$273
This Alaska Airlines deal was found by Cheapflights users on 4/14. 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 5/2910:20 am
SEA
- BWI
Nonstop5h 15m
Alaska Airlines
Mon 6/17:35 pm
BWI
- SEA
Nonstop5h 51m
Alaska Airlines
Deal found 4/14![Alaska Airlines logo]()
$437
This Delta deal was found by Cheapflights users on 4/14. 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.
Fri 9/257:35 pm
SEA
- BWI
1 stop7h 28m
Delta
Mon 9/287:00 pm
BWI
- SEA
1 stop7h 26m
Delta
Deal found 4/14![Delta logo]()
$248
This Delta deal was found by Cheapflights users on 4/16. 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 6/47:59 pm
SEA
- BWI
1 stop6h 46m
Delta
Wed 6/107:13 pm
BWI
- SEA
1 stop7h 46m
Delta
Deal found 4/16![Delta logo]()
$268
This Southwest deal was found by Cheapflights users on 4/16. 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 6/119:25 pm
SEA
- BWI
Nonstop4h 55m
Southwest
Tue 6/166:30 pm
BWI
- SEA
1 stop8h 50m
Southwest
Deal found 4/16![Southwest logo]()
$367
This Southwest deal was found by Cheapflights users on 4/17. 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 8/56:35 pm
SEA
- BWI
1 stop9h 00m
Southwest
Sun 8/94:00 pm
BWI
- SEA
2 stops10h 35m
Southwest
Deal found 4/17![Southwest logo]()
$373
This Delta deal was found by Cheapflights users on 4/13. 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 6/811:50 am
SEA
- BWI
1 stop8h 28m
Delta
Sat 6/135:33 pm
BWI
- SEA
1 stop8h 01m
Delta
Deal found 4/13![Delta logo]()
$368
This Southwest deal was found by Cheapflights users on 4/14. 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 6/49:00 am
SEA
- BWI
2 stops9h 40m
Southwest
Wed 6/105:20 pm
BWI
- SEA
2 stops10h 00m
Southwest
Deal found 4/14![Southwest logo]()
$378
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 7/79:25 pm
SEA
- BWI
Nonstop4h 55m
Southwest
Tue 7/216:30 pm
BWI
- SEA
1 stop8h 50m
Southwest
Deal found 4/18![Southwest logo]()
$398
This Delta 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 5/226:00 am
SEA
- BWI
1 stop8h 24m
Delta
Fri 5/295:26 pm
BWI
- SEA
1 stop8h 22m
Delta
Deal found 4/18![Delta logo]()
$439
This Southwest deal was found by Cheapflights users on 4/17. 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 7/2310:45 pm
SEA
- BWI
1 stop7h 50m
Southwest
Wed 7/295:20 pm
BWI
- SEA
2 stops10h 00m
Southwest
Deal found 4/17![Southwest logo]()
$433
Last-minute flights from Seattle to BaltimoreDiscover last-minute flight deals from Seattle to Baltimore. Data last updated April 18, 2026 and is based on user searches.
Discover last-minute flight deals from Seattle to Baltimore. Data last updated April 18, 2026 and is based on user searches.
This American Airlines deal was found by Cheapflights users on 4/14. 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 4/287:00 am
SEA
- BWI
1 stop8h 00m
American Airlines
Tue 5/55:39 am
BWI
- SEA
1 stop9h 50m
American Airlines
Deal found 4/14![American Airlines logo]()
$258
This American Airlines deal was found by Cheapflights users on 4/15. 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 5/110:29 pm
SEA
- BWI
1 stop7h 23m
American Airlines
Wed 5/67:17 pm
BWI
- SEA
1 stop8h 27m
American Airlines
Deal found 4/15![American Airlines logo]()
$259
This United Airlines deal was found by Cheapflights users on 4/17. 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 5/15:25 pm
SEA
- BWI
1 stop10h 47m
United Airlines
Mon 5/47:05 pm
BWI
- SEA
1 stop7h 54m
United Airlines
Deal found 4/17![United Airlines logo]()
$294
This United Airlines deal was found by Cheapflights users on 4/16. 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 5/17:36 pm
SEA
- BWI
1 stop8h 44m
United Airlines
Fri 5/86:20 pm
BWI
- SEA
1 stop9h 52m
United Airlines
Deal found 4/16![United Airlines logo]()
$299
This Southwest deal was found by Cheapflights users on 4/15. 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 5/46:15 pm
SEA
- BWI
1 stop8h 25m
Southwest
Wed 5/612:40 pm
BWI
- SEA
1 stop8h 50m
Southwest
Deal found 4/15![Southwest logo]()
$253
This American Airlines deal was found by Cheapflights users on 4/17. 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 5/510:25 am
SEA
- BWI
1 stop9h 44m
American Airlines
Tue 5/126:30 pm
BWI
- SEA
1 stop9h 06m
American Airlines
Deal found 4/17![American Airlines logo]()
$289
This Delta deal was found by Cheapflights users on 4/13. 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 5/65:50 pm
SEA
- BWI
1 stop9h 05m
Delta
Sat 5/95:26 pm
BWI
- SEA
1 stop8h 22m
Delta
Deal found 4/13![Delta logo]()
$297
This American Airlines deal was found by Cheapflights users on 4/14. 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 5/96:00 am
SEA
- BWI
1 stop9h 27m
American Airlines
Wed 5/136:30 pm
BWI
- SEA
1 stop9h 06m
American Airlines
Deal found 4/14![American Airlines logo]()
$277
This American Airlines deal was found by Cheapflights users on 4/15. 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 5/2611:58 pm
SEA
- BWI
1 stop7h 04m
American Airlines
Fri 5/297:10 pm
BWI
- SEA
1 stop8h 49m
American Airlines
Deal found 4/15![American Airlines logo]()
$293
This Delta deal was found by Cheapflights users on 4/17. 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.
Fri 5/2911:30 am
SEA
- BWI
1 stop10h 27m
Delta
Mon 6/85:32 pm
BWI
- SEA
1 stop8h 02m
Delta
Deal found 4/17![Delta logo]()
$217
This American Airlines deal was found by Cheapflights users on 4/16. 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 am
SEA
- BWI
1 stop7h 37m
American Airlines
Tue 6/25:01 am
BWI
- SEA
1 stop7h 49m
American Airlines
Deal found 4/16![American Airlines logo]()
$248
This Delta deal was found by Cheapflights users on 4/16. 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.
Fri 5/296:00 am
SEA
- BWI
1 stop9h 36m
Delta
Tue 6/25:26 pm
BWI
- SEA
1 stop8h 20m
Delta
Deal found 4/16![Delta logo]()
$268
One-way flights from Seattle to BaltimoreSearch for one-way flight options from Seattle to Baltimore. Find affordable one-way fares based on user searches. Data last updated April 18, 2026.
Search for one-way flight options from Seattle to Baltimore. Find affordable one-way fares based on user searches. Data last updated April 18, 2026.
This United Airlines deal was found by Cheapflights users on 4/16. 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.
Sat 5/95:25 pm
SEA
- BWI
Nonstop10h 47m
United Airlines
Deal found 4/16![United Airlines logo]()
$104
This Delta deal was found by Cheapflights users on 4/13. 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 5/137:59 pm
SEA
- BWI
1 stop6h 46m
Delta
Deal found 4/13![Delta logo]()
$109
This Kiwi.com deal was found by Cheapflights users on 4/14. 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 5/511:06 am
SEA
- BWI
2 stops44h 31m
Frontier
Deal found 4/14![Frontier logo]()
$112
This Southwest deal was found by Cheapflights users on 4/16. 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 5/136:00 am
SEA
- BWI
2 stops8h 15m
Southwest
Deal found 4/16![Southwest logo]()
$114
This Kiwi.com deal was found by Cheapflights users on 4/14. 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 5/1111:37 am
SEA
- BWI
2 stops29h 41m
Frontier
Deal found 4/14![Frontier logo]()
$118
This Kiwi.com deal was found by Cheapflights users on 4/13. 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 5/49:19 pm
SEA
- BWI
2 stops39h 35m
Frontier
Deal found 4/13![Frontier logo]()
$120
This Kiwi.com deal was found by Cheapflights users on 4/15. 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.
Wed 5/611:06 am
SEA
- BWI
2 stops17h 37m
Frontier
Deal found 4/15![Frontier logo]()
$122
This Kiwi.com deal was found by Cheapflights users on 4/16. 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 5/127:50 pm
SEA
- BWI
2 stops35h 47m
Frontier
Deal found 4/16![Frontier logo]()
$126
This Kiwi.com deal was found by Cheapflights users on 4/13. 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 6/18:20 pm
SEA
- BWI
2 stops20h 58m
Frontier
Deal found 4/13![Frontier logo]()
$127
This United Airlines deal was found by Cheapflights users on 4/14. 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 5/205:25 pm
SEA
- BWI
1 stop10h 55m
United Airlines
Deal found 4/14![United Airlines logo]()
$129
This Kiwi.com deal was found by Cheapflights users on 4/15. 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 5/127:50 pm
SEA
- BWI
2 stops21h 18m
Multiple Airlines
Deal found 4/15![Multiple Airlines logo]()
$130
Find flight deals from Seattle to Baltimore
Discover tips and strategies to find the most affordable flight options for your journey from Seattle (SEA) to Baltimore (BWI). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated April 18, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $217 (Delta) |
One-way from | $104 (United Airlines) |
Popular in | December |
Cheapest in | September |
Average price | $382 |
Cheapflights Fare Finder
Customize your flight search to find flights from Seattle to Baltimore that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated April 18, 2026.
Use the filters below to find and compare flights from Seattle to Baltimore that are best for you.
Fly from
Fly to
Route
Depart
Return
Cheapest round-trip
SeattleBaltimore
SEA - BWI
SEABWI
Seattle/Tacoma Intl
Thu 6/4
7:59 pm-5:45 am
1 stop6h 46m
Baltimore/Washington
Mon 6/8
11:54 am-7:04 pm
1 stop10h 10m
$217
SeattleBaltimore
SEA - BWI
SEABWI
Seattle/Tacoma Intl
Fri 9/25
7:35 pm-6:03 am
1 stop7h 28m
Baltimore/Washington
Mon 9/28
7:00 pm-11:26 pm
1 stop7h 26m
$248
SeattleBaltimore
SEA - BWI
SEABWI
Seattle/Tacoma Intl
Thu 6/4
7:59 pm-5:45 am
1 stop6h 46m
Baltimore/Washington
Wed 6/10
7:13 pm-11:59 pm
1 stop7h 46m
$268
SeattleBaltimore
SEA - BWI
SEABWI
Seattle/Tacoma Intl
Tue 6/2
11:45 pm-11:50 am
2 stops9h 05m
Baltimore/Washington
Tue 6/9
6:30 pm-12:20 am
1 stop8h 50m
$273
SeattleBaltimore
SEA - BWI
SEABWI
Seattle/Tacoma Intl
Thu 6/11
9:25 pm-5:20 am
Nonstop4h 55m
Baltimore/Washington
Tue 6/16
6:30 pm-12:20 am
1 stop8h 50m
$367
SeattleBaltimore
SEA - BWI
SEABWI
Seattle/Tacoma Intl
Mon 6/8
11:50 am-11:18 pm
1 stop8h 28m
Baltimore/Washington
Sat 6/13
5:33 pm-10:34 pm
1 stop8h 01m
$368
SeattleBaltimore
SEA - BWI
SEABWI
Seattle/Tacoma Intl
Wed 8/5
6:35 pm-6:35 am
1 stop9h 00m
Baltimore/Washington
Sun 8/9
4:00 pm-11:35 pm
2 stops10h 35m
$373
SeattleBaltimore
SEA - BWI
SEABWI
Seattle/Tacoma Intl
Thu 6/4
9:00 am-9:40 pm
2 stops9h 40m
Baltimore/Washington
Wed 6/10
5:20 pm-12:20 am
2 stops10h 00m
$378
SeattleBaltimore
SEA - BWI
SEABWI
Seattle/Tacoma Intl
Tue 7/7
9:25 pm-5:20 am
Nonstop4h 55m
Baltimore/Washington
Tue 7/21
6:30 pm-12:20 am
1 stop8h 50m
$398
SeattleBaltimore
SEA - BWI
SEABWI
Seattle/Tacoma Intl
Thu 7/23
10:45 pm-9:35 am
1 stop7h 50m
Baltimore/Washington
Wed 7/29
5:20 pm-12:20 am
2 stops10h 00m
$433
Showing 1-10 of 24 resultsSorted by cheapest first
Compare providers for flights from Seattle to Baltimore
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 Seattle to Baltimore in April.
| 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 Accuracy3 stars | Trust Score*3 stars | |
| Price Accuracy3 stars | Trust Score*3 stars | |
| Price Accuracy3 stars | Trust Score*3 stars |
- Most accurate provider: When it comes to deals on Seattle-Baltimore flights, users find the pricing of FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on Seattle-Baltimore flight deals on Cheapflights vs. FlightHub >95% of the time. Price accuracy is based on data collected from Seattle-Baltimore flight searches over the past month and is updated monthly.
- Most trusted provider: When it comes to deals on Seattle-Baltimore 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 Seattle-Baltimore 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 Seattle to Baltimore
Have a flexible travel schedule? Discover the best time to fly to Baltimore from Seattle with our price prediction graph.
SEA-BWI
Estimated round-trip price
Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.
Cheapflights Insights
Everything you need to know about your flight from Seattle to Baltimore
How far ahead should I book a flight from Seattle to Baltimore?
Use this chart to determine the optimal time to book a round-trip flight from Seattle to Baltimore. Price data was last updated on April 10, 2026.
The best time to book flights from Seattle to Baltimore is 84 days before your desired departure date. The cost of your flight will likely increase significantly if you book two weeks in advance of your flight.
What is the cheapest month to book a flight from Seattle to Baltimore?
Currently, September is the cheapest month in which you can book a flight from Seattle to Baltimore (average of $318). Flying from Seattle to Baltimore in December is currently the most expensive (average of $475). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.
What is the cheapest time of day to fly from SEA to BWI?
Find hourly flight availability from Seattle to Baltimore. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated April 18, 2026.
Regardless of the time of day you decide to fly, the ticket price will remain around the same. Book flights from Seattle to Baltimore as you normally would.
The best insider tips for Seattle to Baltimore 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 Seattle to Baltimore trip
Our travel experts
Reviews of airlines servicing Baltimore
Get insights into the airlines that provide service to Baltimore. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to Baltimore. Reviews last updated April 18, 2026.
See what other customers who have flown with Southwest,Alaska Airlines, andDelta from Seattle to Baltimore have to say. You can also see how each airline compares in terms of entertainment options, comfort, food, crew/service, and boarding process.
Boarding
8.1
Entertainment
7.5
Crew
8.6
Food
7.0
Comfort
8.0
Overall
8.0
Reviews
1 / 20
2.0
MediocreDominic,Mar 2026
MCO - SMF
Boarding
8.1
Entertainment
7.5
Crew
8.6
Food
7.0
Comfort
8.0
Overall
8.0
Reviews
1 / 20
2.0
MediocreDominic,Mar 2026
MCO - SMF
Boarding
8.1
Entertainment
7.5
Crew
8.6
Food
7.0
Comfort
8.0
Overall
8.0
Reviews
1 / 20
2.0
MediocreDominic,Mar 2026
MCO - SMF
Boarding
8.1
Entertainment
7.5
Crew
8.6
Food
7.0
Comfort
8.0
Overall
8.0
Reviews
1 / 20
2.0
MediocreDominic,Mar 2026
MCO - SMF
Boarding
8.1
Entertainment
7.5
Crew
8.6
Food
7.0
Comfort
8.0
Overall
8.0
Reviews
1 / 20
2.0
MediocreDominic,Mar 2026
MCO - SMF
Boarding
8.1
Entertainment
7.5
Crew
8.6
Food
7.0
Comfort
8.0
Overall
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 Seattle to Baltimore. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.
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Alternative routes for Seattle to Baltimore
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Complete your trip
Complete your trip to Baltimore by adding a car rental and/or hotel reservation to your travel itinerary.
Search flights from Seattle to Baltimore by cabin class
Find flights from Seattle to Baltimore, based on your preferred cabin class, be it economy, premium economy, business, or first class.
Seattle and Baltimore flights
Browse other Seattle and Baltimore flight options. Last updated on April 18, 2026.
Other flights from Seattle
Browse through other flights departing from Seattle. Flights are based on user searches made on Cheapflights and were last updated on April 18, 2026.
Popular flight searches
Check out other popular destinations found by fellow travelers in 2026
Top 7 airlines flying from Seattle to Baltimore
Discover the top 7 airlines that operate flights from Seattle to Baltimore. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated April 18, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$103 | Average$335 | FlexibilityNo cancel fee | On-timeN/A | |
| Cheapest$128 | Average$387 | FlexibilityNo cancel fee | On-time85% | |
| Cheapest$139 | Average$229 | FlexibilityNo cancel fee | On-time62% | |
| Cheapest$178 | Average$277 | FlexibilityNo cancel fee | On-time71% | |
| Cheapest$187 | Average$416 | FlexibilityNo cancel fee | On-time63% | |
| Cheapest$226 | Average$380 | FlexibilityNo cancel fee | On-time69% | |
| Cheapest$251 | Average$430 | FlexibilityNo cancel fee | On-time75% |