$161+ 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 6/8. Fares are subject to change and may not be available on all flights or dates of travel.
BUF — SEA
May 29 — Haz 51
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 Nisan 29, 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 Nisan 29, 2026.
This American Airlines deal was found by Cheapflights users on 4/27. 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.
Sal 9/14:50 pm
BUF
- SEA
1 stop8h 36m
American Airlines
Sal 9/85:10 am
SEA
- BUF
1 stop7h 49m
American Airlines
Deal found 4/27![American Airlines logo]()
$391
This Southwest deal was found by Cheapflights users on 4/24. 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.
Sal 8/116:25 pm
BUF
- SEA
1 stop8h 10m
Southwest
Sal 8/1811:05 pm
SEA
- BUF
2 stops10h 25m
Southwest
Deal found 4/24![Southwest logo]()
$396
This Delta deal was found by Cheapflights users on 4/28. 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.
Pzt 6/87:45 pm
BUF
- SEA
1 stop7h 14m
Delta
Çar 6/175:30 am
SEA
- BUF
1 stop6h 51m
Delta
Deal found 4/28![Delta logo]()
$406
This Kiwi.com deal was found by Cheapflights users on 4/28. 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.
Çar 7/12:50 pm
BUF
- SEA
2 stops22h 45m
Multiple Airlines
Çar 7/226:15 pm
SEA
- BUF
1 stop13h 11m
Multiple Airlines
Deal found 4/28![Multiple Airlines logo]()
$410
This Delta deal was found by Cheapflights users on 4/28. 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.
Cmt 6/67:00 am
BUF
- SEA
1 stop16h 10m
Delta
Çar 6/175:30 am
SEA
- BUF
1 stop6h 51m
Delta
Deal found 4/28![Delta logo]()
$417
This Delta deal was found by Cheapflights users on 4/25. 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.
Çar 5/203:52 pm
BUF
- SEA
1 stop9h 56m
Delta
Per 5/2812:30 pm
SEA
- BUF
1 stop8h 29m
Delta
Deal found 4/25![Delta logo]()
$421
This American Airlines deal was found by Cheapflights users on 4/27. 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.
Sal 5/262:47 pm
BUF
- SEA
1 stop11h 11m
American Airlines
Sal 6/210:07 pm
SEA
- BUF
1 stop9h 05m
American Airlines
Deal found 4/27![American Airlines logo]()
$423
This Southwest deal was found by Cheapflights users on 4/28. 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.
Per 6/47:55 pm
BUF
- SEA
1 stop7h 35m
Southwest
Pzt 6/87:20 pm
SEA
- BUF
2 stops9h 40m
Southwest
Deal found 4/28![Southwest logo]()
$426
This Delta deal was found by Cheapflights users on 4/28. 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.
Sal 6/97:00 am
BUF
- SEA
1 stop10h 50m
Delta
Per 6/1810:20 pm
SEA
- BUF
1 stop8h 20m
Delta
Deal found 4/28![Delta logo]()
$434
This Delta deal was found by Cheapflights users on 4/28. 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.
Paz 6/77:00 am
BUF
- SEA
1 stop19h 08m
Delta
Sal 6/166:05 am
SEA
- BUF
1 stop9h 22m
Delta
Deal found 4/28![Delta logo]()
$436
This Southwest deal was found by Cheapflights users on 4/25. 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.
Per 9/107:10 pm
BUF
- SEA
1 stop7h 20m
Southwest
Sal 9/1511:05 pm
SEA
- BUF
2 stops10h 25m
Southwest
Deal found 4/25![Southwest logo]()
$439
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 Nisan 29, 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 Nisan 29, 2026.
This Delta deal was found by Cheapflights users on 4/28. 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.
Çar 7/227:36 pm
BUF
- SEA
1 stop7h 22m
Delta
Per 7/3010:40 pm
SEA
- BUF
1 stop8h 01m
Delta
Deal found 4/28![Delta logo]()
$477
This Southwest deal was found by Cheapflights users on 4/25. 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.
Cmt 7/44:20 pm
BUF
- SEA
1 stop9h 00m
Southwest
Paz 7/129:25 pm
SEA
- BUF
1 stop7h 45m
Southwest
Deal found 4/25![Southwest logo]()
$477
This KAYAK deal was found by Cheapflights users on 4/28. 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 KAYAK is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Paz 5/3112:51 pm
BUF
- SEA
1 stop11h 44m
American Airlines
Cmt 6/66:20 am
SEA
- BUF
2 stops12h 40m
American Airlines
Deal found 4/28![American Airlines logo]()
$543
This Southwest deal was found by Cheapflights users on 4/28. 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.
Cmt 7/255:25 pm
BUF
- SEA
2 stops10h 45m
Southwest
Per 8/65:15 am
SEA
- BUF
1 stop7h 00m
Southwest
Deal found 4/28![Southwest logo]()
$482
This Delta deal was found by Cheapflights users on 4/26. 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.
Çar 5/133:52 pm
BUF
- SEA
1 stop9h 56m
Delta
Çar 5/207:15 am
SEA
- BUF
1 stop14h 04m
Delta
Deal found 4/26![Delta logo]()
$520
This Southwest deal was found by Cheapflights users on 4/26. 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.
Cmt 6/206:25 pm
BUF
- SEA
1 stop9h 10m
Southwest
Pzt 6/297:20 pm
SEA
- BUF
2 stops9h 40m
Southwest
Deal found 4/26![Southwest logo]()
$482
This Southwest deal was found by Cheapflights users on 4/25. 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.
Per 5/1411:25 am
BUF
- SEA
2 stops11h 40m
Southwest
Sal 5/1911:45 pm
SEA
- BUF
1 stop7h 35m
Southwest
Deal found 4/25![Southwest logo]()
$514
This Southwest deal was found by Cheapflights users on 4/28. 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.
Pzt 6/14:00 pm
BUF
- SEA
2 stops11h 55m
Southwest
Cmt 6/610:30 am
SEA
- BUF
1 stop6h 50m
Southwest
Deal found 4/28![Southwest logo]()
$525
This Southwest deal was found by Cheapflights users on 4/25. 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.
Paz 6/219:20 am
BUF
- SEA
1 stop12h 45m
Southwest
Paz 6/289:25 pm
SEA
- BUF
1 stop7h 45m
Southwest
Deal found 4/25![Southwest logo]()
$540
This Southwest deal was found by Cheapflights users on 4/24. 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.
Paz 5/246:15 am
BUF
- SEA
2 stops12h 05m
Southwest
Paz 5/3111:55 pm
SEA
- BUF
1 stop7h 20m
Southwest
Deal found 4/24![Southwest logo]()
$542
Last-minute flights from Buffalo to SeattleDiscover last-minute flight deals from Buffalo to Seattle. Data last updated Nisan 29, 2026 and is based on user searches.
Discover last-minute flight deals from Buffalo to Seattle. Data last updated Nisan 29, 2026 and is based on user searches.
This Expedia deal was found by Cheapflights users on 4/26. 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.
Çar 5/1310:54 am
BUF
- SEA
1 stop13h 37m
JetBlue
Cmt 5/2311:52 pm
SEA
- BUF
1 stop11h 05m
JetBlue
Deal found 4/26![JetBlue logo]()
$473
This American Airlines deal was found by Cheapflights users on 4/24. 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.
Cum 5/156:00 pm
BUF
- SEA
1 stop9h 36m
American Airlines
Sal 5/1910:47 pm
SEA
- BUF
1 stop8h 31m
American Airlines
Deal found 4/24![American Airlines logo]()
$463
This Delta deal was found by Cheapflights users on 4/25. 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.
Çar 5/203:52 pm
BUF
- SEA
1 stop9h 56m
Delta
Per 5/2812:30 pm
SEA
- BUF
1 stop8h 29m
Delta
Deal found 4/25![Delta logo]()
$421
This American Airlines deal was found by Cheapflights users on 4/27. 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.
Per 5/215:25 am
BUF
- SEA
1 stop9h 21m
American Airlines
Cmt 5/235:15 am
SEA
- BUF
1 stop10h 24m
American Airlines
Deal found 4/27![American Airlines logo]()
$454
This JetBlue deal was found by Cheapflights users on 4/28. 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.
Cmt 5/232:47 pm
BUF
- SEA
1 stop9h 09m
JetBlue
Sal 6/211:52 pm
SEA
- BUF
1 stop10h 50m
JetBlue
Deal found 4/28![JetBlue logo]()
$458
This American Airlines deal was found by Cheapflights users on 4/26. 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.
Cmt 5/235:25 am
BUF
- SEA
1 stop9h 16m
American Airlines
Pzt 5/255:15 am
SEA
- BUF
1 stop10h 26m
American Airlines
Deal found 4/26![American Airlines logo]()
$465
This American Airlines deal was found by Cheapflights users on 4/27. 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.
Pzt 5/255:25 am
BUF
- SEA
1 stop9h 21m
American Airlines
Sal 6/21:56 pm
SEA
- BUF
1 stop7h 18m
American Airlines
Deal found 4/27![American Airlines logo]()
$452
This American Airlines deal was found by Cheapflights users on 4/27. 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.
Sal 5/262:47 pm
BUF
- SEA
1 stop11h 11m
American Airlines
Sal 6/210:07 pm
SEA
- BUF
1 stop9h 05m
American Airlines
Deal found 4/27![American Airlines logo]()
$423
This Southwest deal was found by Cheapflights users on 4/28. 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.
Sal 5/264:00 pm
BUF
- SEA
2 stops11h 10m
Southwest
Sal 6/211:45 pm
SEA
- BUF
1 stop7h 35m
Southwest
Deal found 4/28![Southwest logo]()
$469
This American Airlines deal was found by Cheapflights users on 4/26. 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.
Per 5/2812:51 pm
BUF
- SEA
1 stop11h 44m
American Airlines
Paz 5/3110:35 pm
SEA
- BUF
1 stop8h 37m
American Airlines
Deal found 4/26![American Airlines logo]()
$456
This American Airlines deal was found by Cheapflights users on 4/25. 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.
Cmt 5/305:25 am
BUF
- SEA
1 stop9h 16m
American Airlines
Pzt 6/1511:58 pm
SEA
- BUF
1 stop6h 31m
American Airlines
Deal found 4/25![American Airlines logo]()
$449
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 Nisan 29, 2026.
Search for one-way flight options from Buffalo to Seattle. Find affordable one-way fares based on user searches. Data last updated Nisan 29, 2026.
This Kiwi.com deal was found by Cheapflights users on 4/28. 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.
Pzt 6/82:49 pm
BUF
- SEA
2 stops22h 46m
Frontier
Deal found 4/28![Frontier logo]()
$161
This Kiwi.com deal was found by Cheapflights users on 4/28. 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.
Cum 7/102:50 pm
BUF
- SEA
2 stops30h 22m
Frontier
Deal found 4/28![Frontier logo]()
$167
This Kiwi.com deal was found by Cheapflights users on 4/25. 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.
Sal 6/912:05 pm
BUF
- SEA
2 stops24h 43m
Frontier
Deal found 4/25![Frontier logo]()
$173
This Kiwi.com deal was found by Cheapflights users on 4/24. 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.
Çar 5/272:49 pm
BUF
- SEA
2 stops30h 46m
Frontier
Deal found 4/24![Frontier logo]()
$174
This Kiwi.com deal was found by Cheapflights users on 4/25. 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.
Paz 6/711:36 am
BUF
- SEA
2 stops49h 12m
Frontier
Deal found 4/25![Frontier logo]()
$181
This Kiwi.com deal was found by Cheapflights users on 4/28. 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.
Çar 5/202:49 pm
BUF
- SEA
2 stops26h 12m
Frontier
Deal found 4/28![Frontier logo]()
$188
This Kiwi.com deal was found by Cheapflights users on 4/27. 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.
Cum 5/82:49 pm
BUF
- SEA
2 stops22h 00m
Frontier
Deal found 4/27![Frontier logo]()
$190
This Delta deal was found by Cheapflights users on 4/24. 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.
Çar 5/273:53 pm
BUF
- SEA
1 stop9h 52m
Delta
Deal found 4/24![Delta logo]()
$196
This Southwest deal was found by Cheapflights users on 4/24. 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.
Sal 6/164:25 pm
BUF
- SEA
2 stops10h 55m
Southwest
Deal found 4/24![Southwest logo]()
$201
This Kiwi.com deal was found by Cheapflights users on 4/26. 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.
Paz 5/178:49 pm
BUF
- SEA
2 stops40h 00m
Frontier
Deal found 4/26![Frontier logo]()
$203
This Delta deal was found by Cheapflights users on 4/28. 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.
Pzt 6/86:00 am
BUF
- SEA
1 stop9h 25m
Delta
Deal found 4/28![Delta logo]()
$211
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 Nisan 29, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $391 (American Airlines) |
One-way from | $161 (Kiwi.com) |
Popular in | November |
Cheapest in | October |
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 Nisan 29, 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
Quickest round-trip
BuffaloSeattle
BUF - SEA
BUFSEA
Buffalo
Çar 7/22
7:36 pm-11:58 pm
1 stop7h 22m
Seattle/Tacoma Intl
Per 7/30
10:40 pm-9:41 am
1 stop8h 01m
$477
BuffaloSeattle
BUF - SEA
BUFSEA
Buffalo
Cmt 7/4
4:20 pm-10:20 pm
1 stop9h 00m
Seattle/Tacoma Intl
Paz 7/12
9:25 pm-8:10 am
1 stop7h 45m
$477
BuffaloSeattle
BUF - SEA
BUFSEA
Buffalo
Cmt 7/25
5:25 pm-1:10 am
2 stops10h 45m
Seattle/Tacoma Intl
Per 8/6
5:15 am-3:15 pm
1 stop7h 00m
$482
BuffaloSeattle
BUF - SEA
BUFSEA
Buffalo
Cmt 6/20
6:25 pm-12:35 am
1 stop9h 10m
Seattle/Tacoma Intl
Pzt 6/29
7:20 pm-8:00 am
2 stops9h 40m
$482
BuffaloSeattle
BUF - SEA
BUFSEA
Buffalo
Per 5/14
11:25 am-8:05 pm
2 stops11h 40m
Seattle/Tacoma Intl
Sal 5/19
11:45 pm-10:20 am
1 stop7h 35m
$514
BuffaloSeattle
BUF - SEA
BUFSEA
Buffalo
Çar 5/13
3:52 pm-10:48 pm
1 stop9h 56m
Seattle/Tacoma Intl
Çar 5/20
7:15 am-12:19 am
1 stop14h 04m
$520
BuffaloSeattle
BUF - SEA
BUFSEA
Buffalo
Pzt 6/1
4:00 pm-12:55 am
2 stops11h 55m
Seattle/Tacoma Intl
Cmt 6/6
10:30 am-8:20 pm
1 stop6h 50m
$525
BuffaloSeattle
BUF - SEA
BUFSEA
Buffalo
Paz 6/21
9:20 am-7:05 pm
1 stop12h 45m
Seattle/Tacoma Intl
Paz 6/28
9:25 pm-8:10 am
1 stop7h 45m
$540
BuffaloSeattle
BUF - SEA
BUFSEA
Buffalo
Paz 5/24
6:15 am-3:20 pm
2 stops12h 05m
Seattle/Tacoma Intl
Paz 5/31
11:55 pm-10:15 am
1 stop7h 20m
$542
BuffaloSeattle
BUF - SEA
BUFSEA
Buffalo
Paz 5/31
12:51 pm-9:35 pm
1 stop11h 44m
Seattle/Tacoma Intl
Cmt 6/6
6:20 am-10:00 pm
2 stops12h 40m
$543
Showing 1-10 of 21 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 April.
| Provider | Price Accuracy | Trust Score* |
|---|---|---|
| Price Accuracy1 star | Trust Score*3 stars | |
| Price Accuracy3 stars | Trust Score*3 stars | |
| Price Accuracy2 stars | Trust Score*1 star |
- 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 36 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, October is the cheapest month in which you can book a flight from Buffalo to Seattle (average of $329). 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 Nisan 29, 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.
Food
7.0
Entertainment
7.5
Crew
8.6
Overall
8.0
Comfort
8.0
Boarding
8.1
Reviews
1 / 20
2.0
MediocreDominic,Mar 2026
MCO - SMF
Food
7.0
Entertainment
7.5
Crew
8.6
Overall
8.0
Comfort
8.0
Boarding
8.1
Reviews
1 / 20
2.0
MediocreDominic,Mar 2026
MCO - SMF
Food
7.0
Entertainment
7.5
Crew
8.6
Overall
8.0
Comfort
8.0
Boarding
8.1
Reviews
1 / 20
2.0
MediocreDominic,Mar 2026
MCO - SMF
Food
7.0
Entertainment
7.5
Crew
8.6
Overall
8.0
Comfort
8.0
Boarding
8.1
Reviews
1 / 20
2.0
MediocreDominic,Mar 2026
MCO - SMF
Food
7.0
Entertainment
7.5
Crew
8.6
Overall
8.0
Comfort
8.0
Boarding
8.1
Reviews
1 / 20
2.0
MediocreDominic,Mar 2026
MCO - SMF
Food
7.0
Entertainment
7.5
Crew
8.6
Overall
8.0
Comfort
8.0
Boarding
8.1
Reviews
1 / 20
2.0
MediocreDominic,Mar 2026
MCO - SMF
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
Ocean Shores
Olympia
Lynnwood
Lacey
Edmonds
Leavenworth
Snoqualmie
Tumwater
Tukwila
Puyallup
Kent
Renton
Kirkland
Ellensburg
Fife
Lakewood
Issaquah
Shoreline
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Buffalo and Seattle flights
Browse other Buffalo and Seattle flight options. Last updated on Nisan 29, 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 Nisan 29, 2026.
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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 Nisan 29, 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 Nisan 29, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$145 | Average$299 | FlexibilityNo cancel fee | On-time62% | |
| Cheapest$150 | Average$277 | FlexibilityNo cancel fee | On-time62% | |
| Cheapest$173 | Average$476 | FlexibilityNo cancel fee | On-timeN/A | |
| Cheapest$268 | Average$478 | FlexibilityNo cancel fee | On-time69% | |
| Cheapest$326 | Average$476 | FlexibilityNo cancel fee | On-time71% | |
| Cheapest$335 | Average$457 | FlexibilityNo cancel fee | On-time63% |