$141+ Cheap flights from Buffalo to Seattle (BUF - 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 5/19. Fares are subject to change and may not be available on all flights or dates of travel.
BUF — SEA
Mar 20 — Mar 271
1 adult, Economy
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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
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Cheapest flights from Buffalo to SeattleExplore the most affordable flight options available from Buffalo to Seattle. Find the lowest fares from popular airlines and budget airlines, with prices last updated on February 18, 2026.
Explore the most affordable flight options available from Buffalo to Seattle. Find the lowest fares from popular airlines and budget airlines, with prices last updated on February 18, 2026.
This Delta deal was found by Cheapflights users on 2/17. 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.
Tue 3/1012:07 pm
BUF
- SEA
1 stop9h 49m
Delta
Wed 3/1110:58 pm
SEA
- BUF
1 stop8h 59m
Delta
Deal found 2/17![Delta logo]()
$311
This United Airlines deal was found by Cheapflights users on 2/17. 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.
Tue 3/171:52 pm
BUF
- SEA
1 stop8h 11m
United Airlines
Tue 3/2411:59 pm
SEA
- BUF
2 stops11h 15m
United Airlines
Deal found 2/17![United Airlines logo]()
$316
This Delta deal was found by Cheapflights users on 2/16. 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.
Mon 3/96:15 am
BUF
- SEA
1 stop7h 16m
Delta
Wed 3/111:30 pm
SEA
- BUF
1 stop6h 25m
Delta
Deal found 2/16![Delta logo]()
$332
This United Airlines deal was found by Cheapflights users on 2/17. 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.
Wed 5/67:00 am
BUF
- SEA
2 stops10h 36m
United Airlines
Sat 5/98:00 am
SEA
- BUF
1 stop7h 35m
United Airlines
Deal found 2/17![United Airlines logo]()
$337
This American Airlines deal was found by Cheapflights users on 2/15. 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.
Mon 3/235:59 pm
BUF
- SEA
1 stop9h 25m
American Airlines
Sat 3/2810:57 pm
SEA
- BUF
1 stop9h 01m
American Airlines
Deal found 2/15![American Airlines logo]()
$353
This Delta deal was found by Cheapflights users on 2/17. 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.
Wed 3/111:00 pm
BUF
- SEA
1 stop8h 24m
Delta
Wed 3/1110:58 pm
SEA
- BUF
1 stop8h 59m
Delta
Deal found 2/17![Delta logo]()
$355
This CheapOair deal was found by Cheapflights users on 2/15. 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 CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 6/16:00 am
BUF
- SEA
1 stop31h 20m
JetBlue
Tue 6/911:30 am
SEA
- BUF
1 stop8h 27m
JetBlue
Deal found 2/15![JetBlue logo]()
$356
This United Airlines deal was found by Cheapflights users on 2/17. 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.
Sat 4/2510:50 am
BUF
- SEA
2 stops10h 45m
United Airlines
Thu 4/3011:14 pm
SEA
- BUF
1 stop7h 39m
United Airlines
Deal found 2/17![United Airlines logo]()
$358
This Southwest deal was found by Cheapflights users on 2/16. 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.
Mon 3/93:55 pm
BUF
- SEA
2 stops11h 35m
Southwest
Tue 3/1711:55 pm
SEA
- BUF
1 stop7h 15m
Southwest
Deal found 2/16![Southwest logo]()
$360
This United Airlines deal was found by Cheapflights users on 2/18. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 4/237:00 am
BUF
- SEA
1 stop7h 48m
United Airlines
Sat 5/28:51 am
SEA
- BUF
2 stops9h 10m
United Airlines
Deal found 2/18![United Airlines logo]()
$372
This American Airlines deal was found by Cheapflights users on 2/15. 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.
Sun 5/33:01 pm
BUF
- SEA
1 stop10h 37m
American Airlines
Sat 5/167:00 am
SEA
- BUF
1 stop11h 36m
American Airlines
Deal found 2/15![American Airlines logo]()
$373
This Delta deal was found by Cheapflights users on 2/18. 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.
Wed 5/133:52 pm
BUF
- SEA
1 stop9h 36m
Delta
Sun 5/175:30 am
SEA
- BUF
1 stop6h 42m
Delta
Deal found 2/18![Delta logo]()
$374
Best flights from Buffalo to SeattleDiscover carefully curated flight deals from Buffalo to Seattle that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated February 18, 2026.
Discover carefully curated flight deals from Buffalo to Seattle that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated February 18, 2026.
This United Airlines deal was found by Cheapflights users on 2/16. 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.
Wed 5/66:04 am
BUF
- SEA
1 stop8h 44m
United Airlines
Sat 5/98:00 am
SEA
- BUF
1 stop7h 35m
United Airlines
Deal found 2/16![United Airlines logo]()
$332
This Southwest deal was found by Cheapflights users on 2/16. 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.
Mon 3/97:35 pm
BUF
- SEA
1 stop7h 55m
Southwest
Tue 3/1711:55 pm
SEA
- BUF
1 stop7h 15m
Southwest
Deal found 2/16![Southwest logo]()
$332
This American Airlines deal was found by Cheapflights users on 2/15. 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.
Sun 5/33:01 pm
BUF
- SEA
1 stop10h 37m
American Airlines
Sat 5/167:00 am
SEA
- BUF
1 stop11h 36m
American Airlines
Deal found 2/15![American Airlines logo]()
$373
This Delta deal was found by Cheapflights users on 2/17. 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.
Tue 3/1012:07 pm
BUF
- SEA
1 stop9h 49m
Delta
Fri 3/1310:58 pm
SEA
- BUF
1 stop13h 16m
Delta
Deal found 2/17![Delta logo]()
$376
This Southwest deal was found by Cheapflights users on 2/17. 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 3/257:00 pm
BUF
- SEA
1 stop7h 55m
Southwest
Mon 4/611:55 pm
SEA
- BUF
1 stop7h 25m
Southwest
Deal found 2/17![Southwest logo]()
$355
This United Airlines deal was found by Cheapflights users on 2/17. 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.
Sat 4/2510:50 am
BUF
- SEA
2 stops10h 45m
United Airlines
Thu 4/3011:14 pm
SEA
- BUF
1 stop7h 39m
United Airlines
Deal found 2/17![United Airlines logo]()
$358
This Delta deal was found by Cheapflights users on 2/15. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 4/134:59 pm
BUF
- SEA
1 stop9h 54m
Delta
Mon 4/2010:40 pm
SEA
- BUF
1 stop9h 32m
Delta
Deal found 2/15![Delta logo]()
$376
This American Airlines deal was found by Cheapflights users on 2/14. 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 3/36:30 am
BUF
- SEA
1 stop9h 30m
American Airlines
Sat 3/77:15 am
SEA
- BUF
1 stop13h 08m
American Airlines
Deal found 2/14![American Airlines logo]()
$403
This Southwest deal was found by Cheapflights users on 2/16. 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 5/136:55 pm
BUF
- SEA
1 stop8h 15m
Southwest
Sun 5/1711:55 pm
SEA
- BUF
1 stop7h 20m
Southwest
Deal found 2/16![Southwest logo]()
$374
This Delta deal was found by Cheapflights users on 2/17. 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.
Tue 3/103:56 pm
BUF
- SEA
1 stop9h 24m
Delta
Wed 3/116:05 pm
SEA
- BUF
2 stops12h 45m
Delta
Deal found 2/17![Delta logo]()
$399
This Southwest deal was found by Cheapflights users on 2/16. 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.
Mon 4/134:00 pm
BUF
- SEA
2 stops11h 05m
Southwest
Fri 4/178:10 am
SEA
- BUF
2 stops10h 20m
Southwest
Deal found 2/16![Southwest logo]()
$405
Last-minute flights from Buffalo to SeattleDiscover last-minute flight deals from Buffalo to Seattle. Data last updated February 18, 2026 and is based on user searches.
Discover last-minute flight deals from Buffalo to Seattle. Data last updated February 18, 2026 and is based on user searches.
This Delta deal was found by Cheapflights users on 2/16. 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.
Mon 3/96:15 am
BUF
- SEA
1 stop7h 16m
Delta
Wed 3/111:30 pm
SEA
- BUF
1 stop6h 25m
Delta
Deal found 2/16![Delta logo]()
$332
This Southwest deal was found by Cheapflights users on 2/16. 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.
Mon 3/93:55 pm
BUF
- SEA
2 stops11h 35m
Southwest
Tue 3/1711:55 pm
SEA
- BUF
1 stop7h 15m
Southwest
Deal found 2/16![Southwest logo]()
$360
This Southwest deal was found by Cheapflights users on 2/16. 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.
Mon 3/97:35 pm
BUF
- SEA
1 stop7h 55m
Southwest
Thu 3/1211:55 pm
SEA
- BUF
1 stop7h 35m
Southwest
Deal found 2/16![Southwest logo]()
$376
This Delta deal was found by Cheapflights users on 2/16. 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.
Mon 3/96:15 am
BUF
- SEA
1 stop7h 16m
Delta
Thu 3/121:45 pm
SEA
- BUF
1 stop18h 12m
Delta
Deal found 2/16![Delta logo]()
$387
This Delta deal was found by Cheapflights users on 2/17. 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.
Tue 3/1012:07 pm
BUF
- SEA
1 stop9h 49m
Delta
Wed 3/1110:58 pm
SEA
- BUF
1 stop8h 59m
Delta
Deal found 2/17![Delta logo]()
$311
This Delta deal was found by Cheapflights users on 2/16. 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.
Tue 3/1011:37 am
BUF
- SEA
1 stop11h 09m
Delta
Thu 3/121:30 pm
SEA
- BUF
1 stop6h 25m
Delta
Deal found 2/16![Delta logo]()
$385
This Delta deal was found by Cheapflights users on 2/17. 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.
Wed 3/111:00 pm
BUF
- SEA
1 stop8h 24m
Delta
Wed 3/1110:58 pm
SEA
- BUF
1 stop8h 59m
Delta
Deal found 2/17![Delta logo]()
$355
This United Airlines deal was found by Cheapflights users on 2/17. 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.
Tue 3/171:52 pm
BUF
- SEA
1 stop8h 11m
United Airlines
Tue 3/2411:59 pm
SEA
- BUF
2 stops11h 15m
United Airlines
Deal found 2/17![United Airlines logo]()
$316
This Southwest deal was found by Cheapflights users on 2/17. 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.
Tue 3/171:20 pm
BUF
- SEA
2 stops12h 10m
Southwest
Tue 3/2411:55 pm
SEA
- BUF
2 stops8h 45m
Southwest
Deal found 2/17![Southwest logo]()
$383
This American Airlines deal was found by Cheapflights users on 2/15. 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.
Mon 3/235:59 pm
BUF
- SEA
1 stop9h 25m
American Airlines
Sat 3/2810:57 pm
SEA
- BUF
1 stop9h 01m
American Airlines
Deal found 2/15![American Airlines logo]()
$353
This Delta deal was found by Cheapflights users on 2/17. 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.
Tue 3/245:50 pm
BUF
- SEA
1 stop7h 25m
Delta
Tue 4/79:00 am
SEA
- BUF
2 stops21h 50m
Delta
Deal found 2/17![Delta logo]()
$379
One-way flights from Buffalo to SeattleSearch for one-way flight options from Buffalo to Seattle. Find affordable one-way fares based on user searches. Data last updated February 18, 2026.
Search for one-way flight options from Buffalo to Seattle. Find affordable one-way fares based on user searches. Data last updated February 18, 2026.
This Kiwi.com deal was found by Cheapflights users on 2/17. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 5/191:08 pm
BUF
- SEA
2 stops23h 19m
Frontier
Deal found 2/17![Frontier logo]()
$141
This Kiwi.com deal was found by Cheapflights users on 2/15. 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.
Mon 3/2311:59 am
BUF
- SEA
2 stops32h 10m
Frontier
Deal found 2/15![Frontier logo]()
$143
This Kiwi.com deal was found by Cheapflights users on 2/17. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 5/11:08 pm
BUF
- SEA
2 stops23h 19m
Frontier
Deal found 2/17![Frontier logo]()
$150
This Kiwi.com deal was found by Cheapflights users on 2/17. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 3/1611:59 am
BUF
- SEA
2 stops32h 10m
Frontier
Deal found 2/17![Frontier logo]()
$156
This Kiwi.com deal was found by Cheapflights users on 2/16. 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.
Sun 4/1911:25 am
BUF
- SEA
2 stops30h 40m
Frontier
Deal found 2/16![Frontier logo]()
$162
This Kiwi.com deal was found by Cheapflights users on 2/17. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 5/171:08 pm
BUF
- SEA
2 stops23h 19m
Frontier
Deal found 2/17![Frontier logo]()
$164
This Kiwi.com deal was found by Cheapflights users on 2/18. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 4/2612:07 pm
BUF
- SEA
2 stops32h 45m
Frontier
Deal found 2/18![Frontier logo]()
$166
This American Airlines deal was found by Cheapflights users on 2/17. 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.
Mon 3/165:59 pm
BUF
- SEA
1 stop9h 25m
American Airlines
Deal found 2/17![American Airlines logo]()
$177
This Kiwi.com deal was found by Cheapflights users on 2/17. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 5/1811:25 am
BUF
- SEA
2 stops25h 02m
Frontier
Deal found 2/17![Frontier logo]()
$184
This Kiwi.com deal was found by Cheapflights users on 2/14. 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.
Sun 6/1411:41 am
BUF
- SEA
1 stop14h 05m
Sun Country Air
Deal found 2/14![Sun Country Air logo]()
$188
This Kiwi.com deal was found by Cheapflights users on 2/17. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 5/11:08 pm
BUF
- SEA
3 stops31h 34m
Multiple Airlines
Deal found 2/17![Multiple Airlines logo]()
$191
This Cheapflightsfares deal was found by Cheapflights users on 2/17. 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 Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 6/1812:11 pm
BUF
- SEA
1 stop13h 35m
Sun Country Air
Deal found 2/17![Sun Country Air logo]()
$192
Find flight deals from Buffalo to Seattle
Discover tips and strategies to find the most affordable flight options for your journey from Buffalo (BUF) 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 February 18, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $311 (Delta) |
One-way from | $141 (Kiwi.com) |
Popular in | November |
Cheapest in | October |
Average price | $401 |
Cheapflights Fare Finder
Customize your flight search to find flights from Buffalo 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 February 18, 2026.
Use the filters below to find and compare flights from Buffalo to Seattle that are best for you.
Fly from
Buffalo
Fly to
Seattle
Route
Depart
Return
Price
BuffaloSeattle
BUF - SEA
BUFSEA
Buffalo
Wed 5/6
6:04 am-11:48 am
1 stop8h 44m
Seattle/Tacoma Intl
Sat 5/9
8:00 am-6:35 pm
1 stop7h 35m
$332
BuffaloSeattle
BUF - SEA
BUFSEA
Buffalo
Mon 3/9
7:35 pm-12:30 am
1 stop7h 55m
Seattle/Tacoma Intl
Tue 3/17
11:55 pm-10:10 am
1 stop7h 15m
$332
BuffaloSeattle
BUF - SEA
BUFSEA
Buffalo
Wed 3/25
7:00 pm-11:55 pm
1 stop7h 55m
Seattle/Tacoma Intl
Mon 4/6
11:55 pm-10:20 am
1 stop7h 25m
$355
BuffaloSeattle
BUF - SEA
BUFSEA
Buffalo
Sat 4/25
10:50 am-6:35 pm
2 stops10h 45m
Seattle/Tacoma Intl
Thu 4/30
11:14 pm-9:53 am
1 stop7h 39m
$358
BuffaloSeattle
BUF - SEA
BUFSEA
Buffalo
Sun 5/3
3:01 pm-10:38 pm
1 stop10h 37m
Seattle/Tacoma Intl
Sat 5/16
7:00 am-9:36 pm
1 stop11h 36m
$373
BuffaloSeattle
BUF - SEA
BUFSEA
Buffalo
Wed 5/13
6:55 pm-12:10 am
1 stop8h 15m
Seattle/Tacoma Intl
Sun 5/17
11:55 pm-10:15 am
1 stop7h 20m
$374
BuffaloSeattle
BUF - SEA
BUFSEA
Buffalo
Tue 3/10
12:07 pm-6:56 pm
1 stop9h 49m
Seattle/Tacoma Intl
Fri 3/13
10:58 pm-3:14 pm
1 stop13h 16m
$376
BuffaloSeattle
BUF - SEA
BUFSEA
Buffalo
Mon 4/13
4:59 pm-11:53 pm
1 stop9h 54m
Seattle/Tacoma Intl
Mon 4/20
10:40 pm-11:12 am
1 stop9h 32m
$376
BuffaloSeattle
BUF - SEA
BUFSEA
Buffalo
Tue 3/10
3:56 pm-10:20 pm
1 stop9h 24m
Seattle/Tacoma Intl
Wed 3/11
6:05 pm-9:50 am
2 stops12h 45m
$399
BuffaloSeattle
BUF - SEA
BUFSEA
Buffalo
Tue 3/3
6:30 am-1:00 pm
1 stop9h 30m
Seattle/Tacoma Intl
Sat 3/7
7:15 am-11:23 pm
1 stop13h 08m
$403
Showing 1-10 of 23 results
Compare providers for flights from Buffalo 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 Buffalo to Seattle in February.
| Provider | Price Accuracy | Trust Score* |
|---|---|---|
| Price Accuracy1 star | Trust Score*3 stars | |
| Price Accuracy3 stars | Trust Score*3 stars | |
| Price Accuracy2 stars | Trust Score*2 stars |
- Most accurate provider: When it comes to deals on Buffalo-Seattle flights, users find the pricing of FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on Buffalo-Seattle flight deals on Cheapflights vs. FlightHub >95% of the time. Price accuracy is based on data collected from Buffalo-Seattle flight searches over the past month and is updated monthly.
- Most trusted provider: When it comes to deals on Buffalo-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 Buffalo-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 Buffalo to Seattle
Have a flexible travel schedule? Discover the best time to fly to Seattle from Buffalo with our price prediction graph.
BUF-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 Buffalo to Seattle
How far ahead should I book a flight from Buffalo to Seattle?
Use this chart to determine the optimal time to book a round-trip flight from Buffalo to Seattle. Price data was last updated on February 13, 2026.
The best time to book flights from Buffalo to Seattle is 48 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 Buffalo to Seattle?
Currently, September is the cheapest month in which you can book a flight from Buffalo to Seattle (average of $155). Flying from Buffalo to Seattle in December is currently the most expensive (average of $326). 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.
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 February 18, 2026.
Peruse reviews from past customers who have flown with Southwest, Delta, and United Airlines from Buffalo to Seattle to help guide your decision. You can also see how each airline stacks up in terms of entertainment options, comfort, food, crew/service, and boarding process.
Food
7.0
Crew
8.6
Overall
8.0
Boarding
8.1
Entertainment
7.5
Comfort
8.0
Reviews
1 / 20
2.0
MediocreThomas,Dec 2025
SEA - DEN
Food
7.0
Crew
8.6
Overall
8.0
Boarding
8.1
Entertainment
7.5
Comfort
8.0
Reviews
1 / 20
2.0
MediocreThomas,Dec 2025
SEA - DEN
Food
7.0
Crew
8.6
Overall
8.0
Boarding
8.1
Entertainment
7.5
Comfort
8.0
Reviews
1 / 20
2.0
MediocreThomas,Dec 2025
SEA - DEN
Food
7.0
Crew
8.6
Overall
8.0
Boarding
8.1
Entertainment
7.5
Comfort
8.0
Reviews
1 / 20
2.0
MediocreThomas,Dec 2025
SEA - DEN
Food
7.0
Crew
8.6
Overall
8.0
Boarding
8.1
Entertainment
7.5
Comfort
8.0
Reviews
1 / 20
2.0
MediocreThomas,Dec 2025
SEA - DEN
Food
7.0
Crew
8.6
Overall
8.0
Boarding
8.1
Entertainment
7.5
Comfort
8.0
Reviews
1 / 20
2.0
MediocreThomas,Dec 2025
SEA - DEN
Related info for your journey
Find useful and relevant information for your journey from Buffalo 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 locationsTacoma
SeaTac
Lakewood
Ocean Shores
Olympia
Kent
Lynnwood
Edmonds
Lacey
Renton
Puyallup
Kirkland
Tukwila
Fife
Aberdeen
Shoreline
Marysville
Centralia
Federal Way
Chehalis
Browse thousands of different options on Cheapflights for your next trip
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Buffalo and Seattle flights
Browse other Buffalo and Seattle flight options. Last updated on February 18, 2026.
Other flights from Buffalo
Browse through other flights departing from Buffalo. Flights are based on user searches made on Cheapflights and were last updated on February 18, 2026.
Popular flight searches
Check out other popular destinations found by fellow travelers in 2026
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 February 18, 2026.
Top 6 airlines flying from Buffalo to Seattle
Discover the top 6 airlines that operate flights from Buffalo 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 February 18, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$125 | Average$273 | FlexibilityNo cancel fee | On-time62% | |
| Cheapest$150 | Average$277 | FlexibilityNo cancel fee | On-time62% | |
| Cheapest$173 | Average$473 | FlexibilityNo cancel fee | On-timeN/A | |
| Cheapest$324 | Average$452 | FlexibilityNo cancel fee | On-time71% | |
| Cheapest$326 | Average$460 | FlexibilityNo cancel fee | On-time69% | |
| Cheapest$335 | Average$446 | FlexibilityNo cancel fee | On-time63% |