$137+ 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 9/30. Fares are subject to change and may not be available on all flights or dates of travel.
BUF — SEA
Jul 16 — Jul 231
Round-trip
1 adult, Economy
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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 June 16, 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 June 16, 2026.
This JetBlue deal was found by Cheapflights users on 6/11. 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 JetBlue is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 9/2612:10 pm
BUF
- SEA
1 stop11h 32m
JetBlue
Wed 9/309:40 pm
SEA
- BUF
1 stop7h 44m
JetBlue
Deal found 6/11![JetBlue logo]()
$273
This JetBlue deal was found by Cheapflights users on 6/16. 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 JetBlue is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/2212:10 pm
BUF
- SEA
1 stop11h 32m
JetBlue
Sat 9/269:40 pm
SEA
- BUF
1 stop7h 44m
JetBlue
Deal found 6/16![JetBlue logo]()
$283
This CheapOair deal was found by Cheapflights users on 6/12. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/912:10 pm
BUF
- SEA
1 stop11h 32m
JetBlue
Thu 9/179:40 pm
SEA
- BUF
1 stop7h 44m
JetBlue
Deal found 6/12![JetBlue logo]()
$304
This Delta deal was found by Cheapflights users on 6/11. 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 11/101:15 pm
BUF
- SEA
1 stop11h 57m
Delta
Wed 11/186:00 am
SEA
- BUF
1 stop6h 11m
Delta
Deal found 6/11![Delta logo]()
$305
This JetBlue deal was found by Cheapflights users on 6/12. 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 JetBlue is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 7/46:00 am
BUF
- SEA
1 stop9h 27m
JetBlue
Sat 7/411:44 pm
SEA
- BUF
1 stop9h 52m
JetBlue
Deal found 6/12![JetBlue logo]()
$311
This JetBlue deal was found by Cheapflights users on 6/11. 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 JetBlue is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 9/252:30 pm
BUF
- SEA
1 stop11h 08m
JetBlue
Sat 10/39:40 pm
SEA
- BUF
1 stop7h 44m
JetBlue
Deal found 6/11![JetBlue logo]()
$323
This JetBlue deal was found by Cheapflights users on 6/11. 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 JetBlue is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/93:10 pm
BUF
- SEA
1 stop10h 28m
JetBlue
Tue 10/2011:55 pm
SEA
- BUF
1 stop8h 19m
JetBlue
Deal found 6/11![JetBlue logo]()
$328
This Priceline deal was found by Cheapflights users on 6/13. 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 Priceline is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 9/1412:10 pm
BUF
- SEA
1 stop11h 32m
JetBlue
Thu 9/249:40 pm
SEA
- BUF
1 stop7h 44m
JetBlue
Deal found 6/13![JetBlue logo]()
$335
This Delta deal was found by Cheapflights users on 6/11. 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 11/94:00 pm
BUF
- SEA
1 stop9h 12m
Delta
Tue 11/1711:45 am
SEA
- BUF
1 stop9h 14m
Delta
Deal found 6/11![Delta logo]()
$337
This JetBlue deal was found by Cheapflights users on 6/12. 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 JetBlue is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 7/46:00 am
BUF
- SEA
1 stop9h 27m
JetBlue
Fri 7/1011:45 am
SEA
- BUF
1 stop8h 58m
JetBlue
Deal found 6/12![JetBlue logo]()
$347
This JetBlue deal was found by Cheapflights users on 6/11. 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 JetBlue is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/1712:10 pm
BUF
- SEA
1 stop11h 32m
JetBlue
Sun 9/2711:55 pm
SEA
- BUF
1 stop8h 19m
JetBlue
Deal found 6/11![JetBlue logo]()
$354
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 June 16, 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 June 16, 2026.
This JetBlue deal was found by Cheapflights users on 6/16. 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 JetBlue is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/2212:10 pm
BUF
- SEA
1 stop11h 32m
JetBlue
Sat 9/269:40 pm
SEA
- BUF
1 stop7h 44m
JetBlue
Deal found 6/16![JetBlue logo]()
$283
This Southwest deal was found by Cheapflights users on 6/13. 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 9/2212:00 pm
BUF
- SEA
2 stops11h 25m
Southwest
Sat 9/2611:05 pm
SEA
- BUF
2 stops10h 20m
Southwest
Deal found 6/13![Southwest logo]()
$396
This United Airlines deal was found by Cheapflights users on 6/12. 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 9/2610:40 am
BUF
- SEA
2 stops12h 57m
United Airlines
Wed 9/3011:13 pm
SEA
- BUF
1 stop7h 16m
United Airlines
Deal found 6/12![United Airlines logo]()
$501
This JetBlue deal was found by Cheapflights users on 6/12. 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 JetBlue is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/112:10 pm
BUF
- SEA
1 stop11h 32m
JetBlue
Sun 10/411:55 pm
SEA
- BUF
1 stop8h 19m
JetBlue
Deal found 6/12![JetBlue logo]()
$354
This Southwest deal was found by Cheapflights users on 6/14. 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.
Tue 9/83:00 pm
BUF
- SEA
2 stops11h 05m
Southwest
Wed 9/306:40 am
SEA
- BUF
2 stops10h 55m
Southwest
Deal found 6/14![Southwest logo]()
$396
This Southwest deal was found by Cheapflights users on 6/13. 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.
Mon 9/149:40 am
BUF
- SEA
2 stops10h 55m
Southwest
Thu 9/2411:00 pm
SEA
- BUF
2 stops10h 45m
Southwest
Deal found 6/13![Southwest logo]()
$413
This United Airlines deal was found by Cheapflights users on 6/11. 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 9/176:30 am
BUF
- SEA
1 stop8h 02m
United Airlines
Sun 9/2711:13 pm
SEA
- BUF
2 stops12h 10m
United Airlines
Deal found 6/11![United Airlines logo]()
$538
This Southwest deal was found by Cheapflights users on 6/14. 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.
Wed 7/2912:50 pm
BUF
- SEA
2 stops10h 40m
Southwest
Wed 8/55:20 am
SEA
- BUF
2 stops9h 25m
Southwest
Deal found 6/14![Southwest logo]()
$487
This United Airlines deal was found by Cheapflights users on 6/16. 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.
Thu 10/110:40 am
BUF
- SEA
2 stops12h 57m
United Airlines
Sun 10/411:14 pm
SEA
- BUF
1 stop7h 31m
United Airlines
Deal found 6/16![United Airlines logo]()
$555
This Southwest deal was found by Cheapflights users on 6/15. 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.
Fri 7/247:55 pm
BUF
- SEA
1 stop7h 40m
Southwest
Fri 7/3110:45 pm
SEA
- BUF
2 stops10h 10m
Southwest
Deal found 6/15![Southwest logo]()
$523
This Southwest deal was found by Cheapflights users on 6/11. 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 7/304:10 pm
BUF
- SEA
2 stops10h 00m
Southwest
Mon 8/310:45 pm
SEA
- BUF
2 stops10h 45m
Southwest
Deal found 6/11![Southwest logo]()
$547
Last-minute flights from Buffalo to SeattleDiscover last-minute flight deals from Buffalo to Seattle. Data last updated June 16, 2026 and is based on user searches.
Discover last-minute flight deals from Buffalo to Seattle. Data last updated June 16, 2026 and is based on user searches.
This Delta deal was found by Cheapflights users on 6/11. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 6/307:30 pm
BUF
- SEA
1 stop7h 29m
Delta
Fri 7/32:30 pm
SEA
- BUF
1 stop6h 29m
Delta
Deal found 6/11![Delta logo]()
$323
This Justfly.com deal was found by Cheapflights users on 6/12. 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 Justfly.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 6/301:26 pm
BUF
- SEA
1 stop12h 23m
JetBlue
Fri 7/310:28 pm
SEA
- BUF
1 stop7h 42m
JetBlue
Deal found 6/12![JetBlue logo]()
$415
This Delta deal was found by Cheapflights users on 6/11. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 6/307:30 pm
BUF
- SEA
1 stop7h 29m
Delta
Thu 7/27:15 am
SEA
- BUF
1 stop9h 09m
Delta
Deal found 6/11![Delta logo]()
$430
This American Airlines deal was found by Cheapflights users on 6/14. 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 7/16:00 am
BUF
- SEA
1 stop10h 08m
American Airlines
Sat 7/46:00 am
SEA
- BUF
1 stop7h 18m
American Airlines
Deal found 6/14![American Airlines logo]()
$420
This JetBlue deal was found by Cheapflights users on 6/11. 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 JetBlue is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 7/31:31 pm
BUF
- SEA
1 stop12h 18m
JetBlue
Sat 7/411:44 pm
SEA
- BUF
1 stop9h 52m
JetBlue
Deal found 6/11![JetBlue logo]()
$382
This JetBlue deal was found by Cheapflights users on 6/12. 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 JetBlue is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 7/31:31 pm
BUF
- SEA
1 stop12h 18m
JetBlue
Thu 7/911:45 am
SEA
- BUF
1 stop8h 58m
JetBlue
Deal found 6/12![JetBlue logo]()
$418
This Delta deal was found by Cheapflights users on 6/14. 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 7/37:30 pm
BUF
- SEA
1 stop7h 29m
Delta
Wed 7/811:34 am
SEA
- BUF
1 stop10h 12m
Delta
Deal found 6/14![Delta logo]()
$421
This JetBlue deal was found by Cheapflights users on 6/12. 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 JetBlue is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 7/46:00 am
BUF
- SEA
1 stop9h 27m
JetBlue
Tue 7/711:45 am
SEA
- BUF
1 stop9h 03m
JetBlue
Deal found 6/12![JetBlue logo]()
$311
This JetBlue deal was found by Cheapflights users on 6/12. 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 JetBlue is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 7/46:00 am
BUF
- SEA
1 stop9h 27m
JetBlue
Thu 7/911:45 am
SEA
- BUF
1 stop8h 58m
JetBlue
Deal found 6/12![JetBlue logo]()
$347
This JetBlue deal was found by Cheapflights users on 6/12. 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 JetBlue is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 7/46:00 am
BUF
- SEA
1 stop9h 27m
JetBlue
Sun 7/511:44 pm
SEA
- BUF
1 stop9h 52m
JetBlue
Deal found 6/12![JetBlue logo]()
$387
This Southwest deal was found by Cheapflights users on 6/14. 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.
Sat 7/253:25 pm
BUF
- SEA
1 stop10h 45m
Southwest
Tue 7/287:30 pm
SEA
- BUF
2 stops9h 30m
Southwest
Deal found 6/14![Southwest logo]()
$428
This Southwest deal was found by Cheapflights users on 6/14. 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.
Mon 7/277:55 pm
BUF
- SEA
1 stop7h 40m
Southwest
Wed 7/2911:05 pm
SEA
- BUF
1 stop8h 20m
Southwest
Deal found 6/14![Southwest logo]()
$423
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 June 16, 2026.
Search for one-way flight options from Buffalo to Seattle. Find affordable one-way fares based on user searches. Data last updated June 16, 2026.
This JetBlue deal was found by Cheapflights users on 6/13. 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 JetBlue is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/2312:10 pm
BUF
- SEA
1 stop11h 32m
JetBlue
Deal found 6/13![JetBlue logo]()
$137
This JetBlue deal was found by Cheapflights users on 6/16. 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 JetBlue is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/222:30 pm
BUF
- SEA
1 stop11h 08m
JetBlue
Deal found 6/16![JetBlue logo]()
$147
This American Airlines deal was found by Cheapflights users on 6/11. 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 8/194:49 pm
BUF
- SEA
1 stop8h 10m
American Airlines
Deal found 6/11![American Airlines logo]()
$153
This Southwest deal was found by Cheapflights users on 6/11. 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 9/303:00 pm
BUF
- SEA
2 stops11h 05m
Southwest
Deal found 6/11![Southwest logo]()
$158
This Southwest deal was found by Cheapflights users on 6/11. 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 9/1512:00 pm
BUF
- SEA
2 stops11h 25m
Southwest
Deal found 6/11![Southwest logo]()
$159
This Delta deal was found by Cheapflights users on 6/11. 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.
Sat 7/47:45 pm
BUF
- SEA
1 stop7h 14m
Delta
Deal found 6/11![Delta logo]()
$162
This JetBlue deal was found by Cheapflights users on 6/11. 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 JetBlue is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/112:10 pm
BUF
- SEA
1 stop11h 32m
JetBlue
Deal found 6/11![JetBlue logo]()
$168
This JetBlue deal was found by Cheapflights users on 6/16. 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 JetBlue is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/2412:10 pm
BUF
- SEA
1 stop11h 32m
JetBlue
Deal found 6/16![JetBlue logo]()
$173
This American Airlines deal was found by Cheapflights users on 6/13. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 7/216:32 am
BUF
- SEA
1 stop9h 47m
American Airlines
Deal found 6/13![American Airlines logo]()
$185
This Southwest deal was found by Cheapflights users on 6/13. 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.
Wed 8/193:00 pm
BUF
- SEA
2 stops11h 05m
Southwest
Deal found 6/13![Southwest logo]()
$190
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 June 16, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $273 (JetBlue) |
One-way from | $137 (JetBlue) |
Popular in | April |
Cheapest in | September |
Average price | $561 |
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 June 16, 2026.
Use the filters below to find and compare flights from Buffalo to Seattle that are best for you.
Fly from
Fly to
Route
Depart
Return
Cheapest round-trip
BuffaloSeattle
BUF - SEA
BUFSEA
Buffalo
Tue 9/22
12:10 pm-8:42 pm
1 stop11h 32m
Seattle/Tacoma Intl
Sat 9/26
9:40 pm-8:24 am
1 stop7h 44m
$283
BuffaloSeattle
BUF - SEA
BUFSEA
Buffalo
Thu 10/1
12:10 pm-8:42 pm
1 stop11h 32m
Seattle/Tacoma Intl
Sun 10/4
11:55 pm-11:14 am
1 stop8h 19m
$354
BuffaloSeattle
BUF - SEA
BUFSEA
Buffalo
Tue 9/22
12:00 pm-8:25 pm
2 stops11h 25m
Seattle/Tacoma Intl
Sat 9/26
11:05 pm-12:25 pm
2 stops10h 20m
$396
BuffaloSeattle
BUF - SEA
BUFSEA
Buffalo
Tue 9/8
3:00 pm-11:05 pm
2 stops11h 05m
Seattle/Tacoma Intl
Wed 9/30
6:40 am-8:35 pm
2 stops10h 55m
$396
BuffaloSeattle
BUF - SEA
BUFSEA
Buffalo
Mon 9/14
9:40 am-5:35 pm
2 stops10h 55m
Seattle/Tacoma Intl
Thu 9/24
11:00 pm-12:45 pm
2 stops10h 45m
$413
BuffaloSeattle
BUF - SEA
BUFSEA
Buffalo
Wed 7/29
12:50 pm-8:30 pm
2 stops10h 40m
Seattle/Tacoma Intl
Wed 8/5
5:20 am-5:45 pm
2 stops9h 25m
$487
BuffaloSeattle
BUF - SEA
BUFSEA
Buffalo
Sat 9/26
10:40 am-8:37 pm
2 stops12h 57m
Seattle/Tacoma Intl
Wed 9/30
11:13 pm-9:29 am
1 stop7h 16m
$501
Quickest round-trip
BuffaloSeattle
BUF - SEA
BUFSEA
Buffalo
Fri 7/24
7:55 pm-12:35 am
1 stop7h 40m
Seattle/Tacoma Intl
Fri 7/31
10:45 pm-11:55 am
2 stops10h 10m
$523
BuffaloSeattle
BUF - SEA
BUFSEA
Buffalo
Thu 9/17
6:30 am-11:32 am
1 stop8h 02m
Seattle/Tacoma Intl
Sun 9/27
11:13 pm-2:23 pm
2 stops12h 10m
$538
BuffaloSeattle
BUF - SEA
BUFSEA
Buffalo
Thu 7/30
4:10 pm-11:10 pm
2 stops10h 00m
Seattle/Tacoma Intl
Mon 8/3
10:45 pm-12:30 pm
2 stops10h 45m
$547
Showing 1-10 of 22 resultsSorted by cheapest first
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 June.
| Provider | Price Accuracy | Trust Score* |
|---|---|---|
| Price Accuracy1 star | Trust Score*3 stars | |
| Price Accuracy3 stars | Trust Score*3 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?
The best time to book flights from Buffalo to Seattle is 15 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 $376). Flying from Buffalo to Seattle in April is currently the most expensive (average of $587). 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.
How much does it cost to fly round-trip from Buffalo to Seattle?
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 16, 2026.
Peruse reviews from past customers who have flown with Southwest,Delta, andUnited 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.
Boarding
8.1
Crew
8.6
Overall
7.9
Food
7.0
Comfort
8.0
Entertainment
7.5
Reviews
1 / 20
8.0
ExcellentLa Tracimeldamarcos,Jun 2026
LAX - SLC
Boarding
8.1
Crew
8.6
Overall
7.9
Food
7.0
Comfort
8.0
Entertainment
7.5
Reviews
1 / 20
8.0
ExcellentLa Tracimeldamarcos,Jun 2026
LAX - SLC
Boarding
8.1
Crew
8.6
Overall
7.9
Food
7.0
Comfort
8.0
Entertainment
7.5
Reviews
1 / 20
8.0
ExcellentLa Tracimeldamarcos,Jun 2026
LAX - SLC
Boarding
8.1
Crew
8.6
Overall
7.9
Food
7.0
Comfort
8.0
Entertainment
7.5
Reviews
1 / 20
8.0
ExcellentLa Tracimeldamarcos,Jun 2026
LAX - SLC
Boarding
8.1
Crew
8.6
Overall
7.9
Food
7.0
Comfort
8.0
Entertainment
7.5
Reviews
1 / 20
8.0
ExcellentLa Tracimeldamarcos,Jun 2026
LAX - SLC
Boarding
8.1
Crew
8.6
Overall
7.9
Food
7.0
Comfort
8.0
Entertainment
7.5
Reviews
1 / 20
8.0
ExcellentLa Tracimeldamarcos,Jun 2026
LAX - SLC
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 locationsSeaTac
Tacoma
Lacey
Ocean Shores
Leavenworth
Olympia
Edmonds
Snoqualmie
Tumwater
Tukwila
Puyallup
Kent
Lynnwood
Renton
Ellensburg
Fife
Lakewood
Issaquah
Shoreline
Marysville
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Search flights from Buffalo to Seattle by cabin class
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Buffalo and Seattle flights
Browse other Buffalo and Seattle flight options. Last updated on June 16, 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 June 16, 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 June 16, 2026.
Top 5 airlines flying from Buffalo to Seattle
Discover the top 5 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 June 16, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$82 | Average$281 | FlexibilityNo cancel fee | On-time62% | |
| Cheapest$238 | Average$534 | FlexibilityNo cancel fee | On-timeN/A | |
| Cheapest$259 | Average$544 | FlexibilityNo cancel fee | On-time69% | |
| Cheapest$341 | Average$509 | FlexibilityNo cancel fee | On-time71% | |
| Cheapest$346 | Average$482 | FlexibilityNo cancel fee | On-time63% |