$142+ 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 9/23. Fares are subject to change and may not be available on all flights or dates of travel.
BUF — SEA
Jul 11 — Jul 181
Round-trip
1 adult, Economy
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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 11, 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 11, 2026.
This JetBlue deal was found by Cheapflights users on 6/6. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure JetBlue is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 9/1912:10 pm
BUF
- SEA
1 stop11h 32m
JetBlue
Wed 9/239:40 pm
SEA
- BUF
1 stop7h 44m
JetBlue
Deal found 6/6![JetBlue logo]()
$273
This Priceline deal was found by Cheapflights users on 6/8. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Priceline is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/1612:10 pm
BUF
- SEA
1 stop11h 32m
JetBlue
Fri 9/259:40 pm
SEA
- BUF
1 stop7h 44m
JetBlue
Deal found 6/8![JetBlue logo]()
$304
This Delta deal was found by Cheapflights users on 6/10. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 11/37:00 am
BUF
- SEA
1 stop10h 25m
Delta
Tue 11/1011:15 am
SEA
- BUF
1 stop9h 35m
Delta
Deal found 6/10![Delta logo]()
$305
This Southwest deal was found by Cheapflights users on 6/8. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 8/256:25 pm
BUF
- SEA
1 stop8h 10m
Southwest
Tue 9/15:20 am
SEA
- BUF
2 stops9h 25m
Southwest
Deal found 6/8![Southwest logo]()
$312
This JetBlue deal was found by Cheapflights users on 6/8. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure 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 6/8![JetBlue logo]()
$323
This JetBlue deal was found by Cheapflights users on 6/6. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure 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
Thu 10/19:40 pm
SEA
- BUF
1 stop7h 44m
JetBlue
Deal found 6/6![JetBlue logo]()
$335
This Delta deal was found by Cheapflights users on 6/10. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 10/314:00 pm
BUF
- SEA
1 stop9h 12m
Delta
Wed 11/116:00 am
SEA
- BUF
1 stop6h 11m
Delta
Deal found 6/10![Delta logo]()
$337
This JetBlue deal was found by Cheapflights users on 6/10. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure 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 stop10h 34m
JetBlue
Deal found 6/10![JetBlue logo]()
$354
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.
Tue 8/42:44 pm
BUF
- SEA
1 stop11h 12m
American Airlines
Wed 8/195:10 am
SEA
- BUF
1 stop9h 52m
American Airlines
Deal found 6/11![American Airlines logo]()
$358
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 11, 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 11, 2026.
This Delta deal was found by Cheapflights users on 6/8. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 8/254:13 pm
BUF
- SEA
1 stop10h 44m
Delta
Tue 9/111:10 pm
SEA
- BUF
1 stop6h 05m
Delta
Deal found 6/8![Delta logo]()
$305
This JetBlue deal was found by Cheapflights users on 6/10. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure 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 6/10![JetBlue logo]()
$354
This United Airlines deal was found by Cheapflights users on 6/6. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 10/265:50 pm
BUF
- SEA
1 stop9h 24m
United Airlines
Sun 11/112:46 pm
SEA
- BUF
1 stop6h 59m
United Airlines
Deal found 6/6![United Airlines logo]()
$472
This Southwest deal was found by Cheapflights users on 6/9. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 8/294:35 pm
BUF
- SEA
1 stop7h 20m
Southwest
Mon 9/711:05 pm
SEA
- BUF
1 stop9h 15m
Southwest
Deal found 6/9![Southwest logo]()
$477
This JetBlue deal was found by Cheapflights users on 6/10. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure JetBlue is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 7/81:31 pm
BUF
- SEA
1 stop12h 18m
JetBlue
Tue 7/1411:45 am
SEA
- BUF
1 stop8h 58m
JetBlue
Deal found 6/10![JetBlue logo]()
$458
This Southwest deal was found by Cheapflights users on 6/8. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 8/512:00 pm
BUF
- SEA
2 stops11h 25m
Southwest
Wed 8/510:30 pm
SEA
- BUF
1 stop9h 40m
Southwest
Deal found 6/8![Southwest logo]()
$482
This Delta deal was found by Cheapflights users on 6/8. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 8/97:52 pm
BUF
- SEA
1 stop7h 02m
Delta
Mon 8/1711:59 pm
SEA
- BUF
1 stop8h 09m
Delta
Deal found 6/8![Delta logo]()
$527
This Southwest deal was found by Cheapflights users on 6/7. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 7/254:30 pm
BUF
- SEA
2 stops10h 45m
Southwest
Mon 8/310:45 pm
SEA
- BUF
2 stops10h 45m
Southwest
Deal found 6/7![Southwest logo]()
$487
This Southwest deal was found by Cheapflights users on 6/10. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 8/137:10 pm
BUF
- SEA
1 stop7h 20m
Southwest
Mon 8/1711:05 pm
SEA
- BUF
2 stops10h 25m
Southwest
Deal found 6/10![Southwest logo]()
$499
This Southwest deal was found by Cheapflights users on 6/10. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 6/2712:35 pm
BUF
- SEA
2 stops10h 35m
Southwest
Sat 7/47:25 pm
SEA
- BUF
2 stops9h 30m
Southwest
Deal found 6/10![Southwest logo]()
$525
This Southwest deal was found by Cheapflights users on 6/9. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 7/26:05 am
BUF
- SEA
2 stops10h 50m
Southwest
Mon 7/69:25 pm
SEA
- BUF
1 stop7h 35m
Southwest
Deal found 6/9![Southwest logo]()
$542
Last-minute flights from Buffalo to SeattleDiscover last-minute flight deals from Buffalo to Seattle. Data last updated June 11, 2026 and is based on user searches.
Discover last-minute flight deals from Buffalo to Seattle. Data last updated June 11, 2026 and is based on user searches.
This JetBlue deal was found by Cheapflights users on 6/8. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure JetBlue is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 6/221:31 pm
BUF
- SEA
1 stop12h 18m
JetBlue
Tue 6/3011:45 am
SEA
- BUF
1 stop9h 03m
JetBlue
Deal found 6/8![JetBlue logo]()
$442
This Expedia deal was found by Cheapflights users on 6/7. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 6/2612:20 pm
BUF
- SEA
1 stop13h 26m
Multiple Airlines
Sat 7/411:44 pm
SEA
- BUF
1 stop9h 52m
Multiple Airlines
Deal found 6/7![Multiple Airlines logo]()
$419
This Delta deal was found by Cheapflights users on 6/6. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 7/14:01 pm
BUF
- SEA
1 stop9h 33m
Delta
Wed 7/811:34 am
SEA
- BUF
1 stop10h 12m
Delta
Deal found 6/6![Delta logo]()
$449
This Expedia deal was found by Cheapflights users on 6/9. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 7/210:52 am
BUF
- SEA
1 stop9h 15m
Multiple Airlines
Tue 7/711:45 am
SEA
- BUF
1 stop9h 03m
Multiple Airlines
Deal found 6/9![Multiple Airlines logo]()
$439
This Justfly.com deal was found by Cheapflights users on 6/9. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Justfly.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 7/210:52 am
BUF
- SEA
1 stop9h 15m
Multiple Airlines
Sat 7/411:44 pm
SEA
- BUF
1 stop9h 52m
Multiple Airlines
Deal found 6/9![Multiple Airlines logo]()
$446
This Southwest deal was found by Cheapflights users on 6/8. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 7/47:15 am
BUF
- SEA
2 stops11h 40m
Southwest
Fri 7/1011:05 pm
SEA
- BUF
1 stop8h 15m
Southwest
Deal found 6/8![Southwest logo]()
$405
This Delta deal was found by Cheapflights users on 6/7. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 7/47:45 pm
BUF
- SEA
1 stop7h 14m
Delta
Fri 7/1010:40 pm
SEA
- BUF
1 stop23h 10m
Delta
Deal found 6/7![Delta logo]()
$418
This CheapOair deal was found by Cheapflights users on 6/10. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure CheapOair 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 7/1010:19 pm
SEA
- BUF
1 stop22h 54m
JetBlue
Deal found 6/10![JetBlue logo]()
$420
This Delta deal was found by Cheapflights users on 6/7. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 7/47:45 pm
BUF
- SEA
1 stop7h 14m
Delta
Sat 7/1111:34 am
SEA
- BUF
1 stop10h 16m
Delta
Deal found 6/7![Delta logo]()
$451
This JetBlue deal was found by Cheapflights users on 6/7. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure JetBlue is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 7/81:31 pm
BUF
- SEA
1 stop12h 18m
JetBlue
Tue 7/1411:45 am
SEA
- BUF
1 stop8h 58m
JetBlue
Deal found 6/7![JetBlue logo]()
$382
This American Airlines deal was found by Cheapflights users on 6/9. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 7/88:08 am
BUF
- SEA
1 stop9h 19m
American Airlines
Tue 8/255:10 am
SEA
- BUF
1 stop9h 52m
American Airlines
Deal found 6/9![American Airlines logo]()
$452
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 11, 2026.
Search for one-way flight options from Buffalo to Seattle. Find affordable one-way fares based on user searches. Data last updated June 11, 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.
Wed 9/232:30 pm
BUF
- SEA
1 stop11h 08m
JetBlue
Deal found 6/11![JetBlue logo]()
$142
This American Airlines deal was found by Cheapflights users on 6/8. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/1512:56 pm
BUF
- SEA
1 stop10h 11m
American Airlines
Deal found 6/8![American Airlines logo]()
$152
This Southwest deal was found by Cheapflights users on 6/7. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 11/188:05 am
BUF
- SEA
1 stop7h 50m
Southwest
Deal found 6/7![Southwest logo]()
$153
This Southwest deal was found by Cheapflights users on 6/8. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/1512:00 pm
BUF
- SEA
2 stops11h 25m
Southwest
Deal found 6/8![Southwest logo]()
$159
This Delta deal was found by Cheapflights users on 6/6. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure 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 6/6![Delta logo]()
$162
This Southwest deal was found by Cheapflights users on 6/6. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 7/412:30 pm
BUF
- SEA
2 stops10h 40m
Southwest
Deal found 6/6![Southwest logo]()
$167
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 American Airlines deal was found by Cheapflights users on 6/10. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 8/114:49 pm
BUF
- SEA
1 stop8h 10m
American Airlines
Deal found 6/10![American Airlines logo]()
$177
This Delta deal was found by Cheapflights users on 6/10. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 8/277:52 pm
BUF
- SEA
1 stop7h 02m
Delta
Deal found 6/10![Delta logo]()
$185
This CheapOair deal was found by Cheapflights users on 6/6. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/152:30 pm
BUF
- SEA
1 stop11h 08m
JetBlue
Deal found 6/6![JetBlue logo]()
$186
This JetBlue deal was found by Cheapflights users on 6/7. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure JetBlue is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/153:10 pm
BUF
- SEA
1 stop10h 28m
JetBlue
Deal found 6/7![JetBlue logo]()
$187
This Kiwi.com deal was found by Cheapflights users on 6/10. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 7/2512:28 pm
BUF
- SEA
2 stops25h 11m
Frontier
Deal found 6/10![Frontier logo]()
$195
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 11, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $273 (JetBlue) |
One-way from | $142 (JetBlue) |
Popular in | November |
Cheapest in | September |
Average price | $541 |
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 11, 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 8/25
4:13 pm-11:57 pm
1 stop10h 44m
Seattle/Tacoma Intl
Tue 9/1
11:10 pm-8:15 am
1 stop6h 05m
$305
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
Wed 7/8
1:31 pm-10:49 pm
1 stop12h 18m
Seattle/Tacoma Intl
Tue 7/14
11:45 am-11:43 pm
1 stop8h 58m
$458
BuffaloSeattle
BUF - SEA
BUFSEA
Buffalo
Mon 10/26
5:50 pm-12:14 am
1 stop9h 24m
Seattle/Tacoma Intl
Sun 11/1
12:46 pm-10:45 pm
1 stop6h 59m
$472
BuffaloSeattle
BUF - SEA
BUFSEA
Buffalo
Sat 8/29
4:35 pm-8:55 pm
1 stop7h 20m
Seattle/Tacoma Intl
Mon 9/7
11:05 pm-11:20 am
1 stop9h 15m
$477
BuffaloSeattle
BUF - SEA
BUFSEA
Buffalo
Wed 8/5
12:00 pm-8:25 pm
2 stops11h 25m
Seattle/Tacoma Intl
Wed 8/5
10:30 pm-11:10 am
1 stop9h 40m
$482
BuffaloSeattle
BUF - SEA
BUFSEA
Buffalo
Sat 7/25
4:30 pm-12:15 am
2 stops10h 45m
Seattle/Tacoma Intl
Mon 8/3
10:45 pm-12:30 pm
2 stops10h 45m
$487
BuffaloSeattle
BUF - SEA
BUFSEA
Buffalo
Thu 8/13
7:10 pm-11:30 pm
1 stop7h 20m
Seattle/Tacoma Intl
Mon 8/17
11:05 pm-12:30 pm
2 stops10h 25m
$499
BuffaloSeattle
BUF - SEA
BUFSEA
Buffalo
Sat 6/27
12:35 pm-8:10 pm
2 stops10h 35m
Seattle/Tacoma Intl
Sat 7/4
7:25 pm-7:55 am
2 stops9h 30m
$525
Quickest round-trip
BuffaloSeattle
BUF - SEA
BUFSEA
Buffalo
Sun 8/9
7:52 pm-11:54 pm
1 stop7h 02m
Seattle/Tacoma Intl
Mon 8/17
11:59 pm-11:08 am
1 stop8h 09m
$527
Showing 1-10 of 19 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 $374). Flying from Buffalo to Seattle in November is currently the most expensive (average of $581). 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 11, 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.
Crew
8.6
Comfort
8.0
Overall
7.9
Boarding
8.1
Food
7.0
Entertainment
7.5
Reviews
1 / 20
8.0
ExcellentLa Tracimeldamarcos,Jun 2026
LAX - SLC
Crew
8.6
Comfort
8.0
Overall
7.9
Boarding
8.1
Food
7.0
Entertainment
7.5
Reviews
1 / 20
8.0
ExcellentLa Tracimeldamarcos,Jun 2026
LAX - SLC
Crew
8.6
Comfort
8.0
Overall
7.9
Boarding
8.1
Food
7.0
Entertainment
7.5
Reviews
1 / 20
8.0
ExcellentLa Tracimeldamarcos,Jun 2026
LAX - SLC
Crew
8.6
Comfort
8.0
Overall
7.9
Boarding
8.1
Food
7.0
Entertainment
7.5
Reviews
1 / 20
8.0
ExcellentLa Tracimeldamarcos,Jun 2026
LAX - SLC
Crew
8.6
Comfort
8.0
Overall
7.9
Boarding
8.1
Food
7.0
Entertainment
7.5
Reviews
1 / 20
8.0
ExcellentLa Tracimeldamarcos,Jun 2026
LAX - SLC
Crew
8.6
Comfort
8.0
Overall
7.9
Boarding
8.1
Food
7.0
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
Marysville
Shoreline
Browse thousands of different options on Cheapflights for your next trip
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Alternative routes for Buffalo to Seattle
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Complete your trip
Complete your trip to Seattle by adding a car rental and/or hotel reservation to your travel itinerary.
Search flights from Buffalo to Seattle by cabin class
Find flights from Buffalo to Seattle, based on your preferred cabin class, be it economy, premium economy, business, or first class.
Buffalo and Seattle flights
Browse other Buffalo and Seattle flight options. Last updated on June 11, 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 11, 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 11, 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 11, 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$540 | FlexibilityNo cancel fee | On-time69% | |
| Cheapest$335 | Average$476 | FlexibilityNo cancel fee | On-time63% | |
| Cheapest$341 | Average$507 | FlexibilityNo cancel fee | On-time71% |