$152+ 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 8/25. Fares are subject to change and may not be available on all flights or dates of travel.
BUF — SEA
Jun 10 — Jun 171
Round-trip
1 adult, Economy
We work with more than 300 partners to bring you better travel deals
Find cheap flights from Buffalo to Seattle with Cheapflights
1. Tell us where you want to go
Enter your travel information like dates, passengers, trip type (one-way or round trip), and preferred cabin class then click “Find deals”2. Select your favorite providers
We find the providers serving your travel needs. Choose up to four travel providers to compare side-by-side for flights, hotels, or car rentals.3. Compare prices and book
Review each provider’s pricing and select the best option for you! Book through your favorite provider’s website for a seamless experience.Cheap flight deals from Buffalo to Seattle
Cheapest
Best
Last-minute
One-way
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 May 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 May 11, 2026.
This American Airlines deal was found by Cheapflights users on 5/8. 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.
Wed 8/196:10 pm
BUF
- SEA
1 stop8h 40m
American Airlines
Wed 8/265:05 am
SEA
- BUF
1 stop7h 54m
American Airlines
Deal found 5/8![American Airlines logo]()
$410
This American Airlines deal was found by Cheapflights users on 5/8. 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 9/14:50 pm
BUF
- SEA
1 stop8h 36m
American Airlines
Tue 9/811:59 pm
SEA
- BUF
1 stop9h 22m
American Airlines
Deal found 5/8![American Airlines logo]()
$411
This CheapTicketsDeal deal was found by Cheapflights users on 5/9. 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 CheapTicketsDeal is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 8/225:22 pm
BUF
- SEA
1 stop7h 15m
JetBlue
Mon 8/315:22 am
SEA
- BUF
1 stop7h 00m
JetBlue
Deal found 5/9![JetBlue logo]()
$415
This American Airlines deal was found by Cheapflights users on 5/8. 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.
Mon 8/176:10 pm
BUF
- SEA
1 stop8h 40m
American Airlines
Tue 8/255:10 am
SEA
- BUF
1 stop7h 49m
American Airlines
Deal found 5/8![American Airlines logo]()
$416
This American Airlines deal was found by Cheapflights users on 5/7. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 8/116:10 pm
BUF
- SEA
1 stop8h 40m
American Airlines
Sat 8/225:05 am
SEA
- BUF
1 stop7h 54m
American Airlines
Deal found 5/7![American Airlines logo]()
$417
This Delta deal was found by Cheapflights users on 5/8. 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 8/186:00 am
BUF
- SEA
1 stop9h 03m
Delta
Tue 8/257:16 am
SEA
- BUF
1 stop8h 39m
Delta
Deal found 5/8![Delta logo]()
$421
This CheapTicketsDeal deal was found by Cheapflights users on 5/9. 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 CheapTicketsDeal is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 9/137:07 pm
BUF
- SEA
1 stop7h 10m
JetBlue
Mon 9/2111:12 pm
SEA
- BUF
1 stop9h 15m
JetBlue
Deal found 5/9![JetBlue logo]()
$422
This Delta deal was found by Cheapflights users on 5/8. 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 8/1812:16 pm
BUF
- SEA
1 stop11h 07m
Delta
Thu 8/277:16 am
SEA
- BUF
1 stop8h 39m
Delta
Deal found 5/8![Delta logo]()
$425
This Delta deal was found by Cheapflights users on 5/8. 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 9/2912:50 pm
BUF
- SEA
1 stop8h 46m
Delta
Mon 10/59:55 pm
SEA
- BUF
1 stop9h 39m
Delta
Deal found 5/8![Delta logo]()
$426
This American Airlines deal was found by Cheapflights users on 5/10. 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 9/84:50 pm
BUF
- SEA
1 stop8h 36m
American Airlines
Tue 10/68:20 am
SEA
- BUF
1 stop7h 48m
American Airlines
Deal found 5/10![American Airlines logo]()
$429
This Delta deal was found by Cheapflights users on 5/8. 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.
Mon 8/174:13 pm
BUF
- SEA
1 stop10h 44m
Delta
Thu 8/275:10 am
SEA
- BUF
1 stop7h 04m
Delta
Deal found 5/8![Delta logo]()
$430
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 May 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 May 11, 2026.
This Southwest deal was found by Cheapflights users on 5/6. 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.
Tue 8/186:25 pm
BUF
- SEA
1 stop8h 10m
Southwest
Wed 8/2611:05 pm
SEA
- BUF
1 stop8h 40m
Southwest
Deal found 5/6![Southwest logo]()
$411
This Delta deal was found by Cheapflights users on 5/10. 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 7/47:45 pm
BUF
- SEA
1 stop7h 14m
Delta
Tue 7/1410:40 pm
SEA
- BUF
1 stop8h 01m
Delta
Deal found 5/10![Delta logo]()
$437
This Delta deal was found by Cheapflights users on 5/9. 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 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
Wed 7/1511:15 pm
SEA
- BUF
1 stop5h 59m
Delta
Deal found 5/9![Delta logo]()
$454
This Southwest deal was found by Cheapflights users on 5/7. 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.
Thu 8/137:10 pm
BUF
- SEA
1 stop7h 20m
Southwest
Mon 8/1711:05 pm
SEA
- BUF
2 stops10h 25m
Southwest
Deal found 5/7![Southwest logo]()
$454
This Southwest deal was found by Cheapflights users on 5/10. 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.
Tue 8/253:00 pm
BUF
- SEA
2 stops11h 05m
Southwest
Sat 8/2911:05 pm
SEA
- BUF
1 stop8h 45m
Southwest
Deal found 5/10![Southwest logo]()
$459
This Southwest deal was found by Cheapflights users on 5/10. 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.
Mon 7/207:55 pm
BUF
- SEA
1 stop7h 35m
Southwest
Fri 7/249:25 pm
SEA
- BUF
1 stop7h 25m
Southwest
Deal found 5/10![Southwest logo]()
$477
This Southwest deal was found by Cheapflights users on 5/9. 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 7/2512:35 pm
BUF
- SEA
1 stop9h 35m
Southwest
Sat 8/16:40 pm
SEA
- BUF
2 stops10h 15m
Southwest
Deal found 5/9![Southwest logo]()
$482
This Southwest deal was found by Cheapflights users on 5/9. 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 7/115:25 pm
BUF
- SEA
2 stops10h 45m
Southwest
Mon 7/1311:05 pm
SEA
- BUF
1 stop8h 20m
Southwest
Deal found 5/9![Southwest logo]()
$482
This Southwest deal was found by Cheapflights users on 5/7. 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.
Mon 8/175:40 am
BUF
- SEA
2 stops11h 15m
Southwest
Sun 8/2311:05 pm
SEA
- BUF
1 stop8h 40m
Southwest
Deal found 5/7![Southwest logo]()
$482
This Southwest deal was found by Cheapflights users on 5/9. 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.
Fri 7/34:10 pm
BUF
- SEA
2 stops9h 55m
Southwest
Wed 7/157:30 pm
SEA
- BUF
2 stops9h 40m
Southwest
Deal found 5/9![Southwest logo]()
$487
Last-minute flights from Buffalo to SeattleDiscover last-minute flight deals from Buffalo to Seattle. Data last updated May 11, 2026 and is based on user searches.
Discover last-minute flight deals from Buffalo to Seattle. Data last updated May 11, 2026 and is based on user searches.
This JetBlue deal was found by Cheapflights users on 5/10. 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.
Mon 6/18:00 pm
BUF
- SEA
1 stop27h 56m
JetBlue
Tue 6/911:52 pm
SEA
- BUF
1 stop29h 08m
JetBlue
Deal found 5/10![JetBlue logo]()
$440
This JetBlue deal was found by Cheapflights users on 5/10. 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.
Tue 6/22:41 pm
BUF
- SEA
1 stop9h 15m
JetBlue
Mon 6/1511:44 pm
SEA
- BUF
1 stop9h 47m
JetBlue
Deal found 5/10![JetBlue logo]()
$452
This American Airlines deal was found by Cheapflights users on 5/6. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 6/34:57 pm
BUF
- SEA
1 stop10h 19m
American Airlines
Wed 6/105:15 am
SEA
- BUF
1 stop10h 25m
American Airlines
Deal found 5/6![American Airlines logo]()
$411
This Delta deal was found by Cheapflights users on 5/8. 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.
Wed 6/33:53 pm
BUF
- SEA
1 stop9h 52m
Delta
Sat 6/611:25 am
SEA
- BUF
1 stop9h 54m
Delta
Deal found 5/8![Delta logo]()
$426
This American Airlines deal was found by Cheapflights users on 5/8. 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.
Thu 6/45:25 am
BUF
- SEA
1 stop9h 21m
American Airlines
Mon 6/811:58 pm
SEA
- BUF
1 stop6h 31m
American Airlines
Deal found 5/8![American Airlines logo]()
$421
This United Airlines deal was found by Cheapflights users on 5/9. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 6/46:00 am
BUF
- SEA
1 stop8h 57m
United Airlines
Tue 6/97:00 am
SEA
- BUF
1 stop6h 41m
United Airlines
Deal found 5/9![United Airlines logo]()
$437
This Southwest deal was found by Cheapflights users on 5/8. 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 6/66:45 pm
BUF
- SEA
1 stop7h 45m
Southwest
Tue 6/911:05 pm
SEA
- BUF
1 stop8h 20m
Southwest
Deal found 5/8![Southwest logo]()
$416
This Southwest deal was found by Cheapflights users on 5/10. 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 6/65:25 pm
BUF
- SEA
2 stops10h 45m
Southwest
Wed 6/109:25 pm
SEA
- BUF
1 stop7h 45m
Southwest
Deal found 5/10![Southwest logo]()
$442
This Delta deal was found by Cheapflights users on 5/10. 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 6/63:53 pm
BUF
- SEA
1 stop9h 29m
Delta
Thu 6/115:30 am
SEA
- BUF
1 stop6h 51m
Delta
Deal found 5/10![Delta logo]()
$443
This JetBlue deal was found by Cheapflights users on 5/10. 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.
Sat 6/62:47 pm
BUF
- SEA
1 stop9h 09m
JetBlue
Mon 6/1511:45 am
SEA
- BUF
1 stop9h 03m
JetBlue
Deal found 5/10![JetBlue logo]()
$453
This American Airlines deal was found by Cheapflights users on 5/9. 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 6/246:00 am
BUF
- SEA
1 stop10h 08m
American Airlines
Tue 6/3011:58 pm
SEA
- BUF
1 stop6h 31m
American Airlines
Deal found 5/9![American Airlines logo]()
$431
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 May 11, 2026.
Search for one-way flight options from Buffalo to Seattle. Find affordable one-way fares based on user searches. Data last updated May 11, 2026.
This Kiwi.com deal was found by Cheapflights users on 5/10. 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.
Tue 8/2511:35 am
BUF
- SEA
2 stops25h 13m
Frontier
Deal found 5/10![Frontier logo]()
$152
This Kiwi.com deal was found by Cheapflights users on 5/11. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 6/912:05 pm
BUF
- SEA
2 stops25h 30m
Frontier
Deal found 5/11![Frontier logo]()
$174
This Kiwi.com deal was found by Cheapflights users on 5/10. 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.
Mon 6/12:49 pm
BUF
- SEA
2 stops22h 17m
Frontier
Deal found 5/10![Frontier logo]()
$179
This Kiwi.com deal was found by Cheapflights users on 5/7. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 6/32:49 pm
BUF
- SEA
2 stops22h 47m
Frontier
Deal found 5/7![Frontier logo]()
$185
This Kiwi.com deal was found by Cheapflights users on 5/10. 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.
Wed 7/292:50 pm
BUF
- SEA
2 stops22h 49m
Frontier
Deal found 5/10![Frontier logo]()
$188
This Kiwi.com deal was found by Cheapflights users on 5/9. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 7/82:50 pm
BUF
- SEA
2 stops30h 22m
Frontier
Deal found 5/9![Frontier logo]()
$196
This American Airlines deal was found by Cheapflights users on 5/8. 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.
Wed 9/238:11 am
BUF
- SEA
1 stop9h 13m
American Airlines
Deal found 5/8![American Airlines logo]()
$206
This Kiwi.com deal was found by Cheapflights users on 5/11. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 9/77:52 pm
BUF
- SEA
2 stops41h 08m
Frontier
Deal found 5/11![Frontier logo]()
$208
This American Airlines deal was found by Cheapflights users on 5/7. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 6/44:57 pm
BUF
- SEA
1 stop10h 44m
American Airlines
Deal found 5/7![American Airlines logo]()
$210
This American Airlines deal was found by Cheapflights users on 5/8. 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.
Thu 8/206:10 pm
BUF
- SEA
1 stop8h 11m
American Airlines
Deal found 5/8![American Airlines logo]()
$211
This Kiwi.com deal was found by Cheapflights users on 5/6. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 5/3012:41 pm
BUF
- SEA
2 stops24h 25m
Frontier
Deal found 5/6![Frontier logo]()
$214
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 May 11, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $410 (American Airlines) |
One-way from | $152 (Kiwi.com) |
Popular in | November |
Cheapest in | October |
Average price | $470 |
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 May 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 8/18
6:25 pm-11:35 pm
1 stop8h 10m
Seattle/Tacoma Intl
Wed 8/26
11:05 pm-10:45 am
1 stop8h 40m
$411
BuffaloSeattle
BUF - SEA
BUFSEA
Buffalo
Sat 7/4
7:45 pm-11:59 pm
1 stop7h 14m
Seattle/Tacoma Intl
Tue 7/14
10:40 pm-9:41 am
1 stop8h 01m
$437
Quickest round-trip
BuffaloSeattle
BUF - SEA
BUFSEA
Buffalo
Sat 7/4
7:45 pm-11:59 pm
1 stop7h 14m
Seattle/Tacoma Intl
Wed 7/15
11:15 pm-8:14 am
1 stop5h 59m
$454
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
$454
BuffaloSeattle
BUF - SEA
BUFSEA
Buffalo
Tue 8/25
3:00 pm-11:05 pm
2 stops11h 05m
Seattle/Tacoma Intl
Sat 8/29
11:05 pm-10:50 am
1 stop8h 45m
$459
BuffaloSeattle
BUF - SEA
BUFSEA
Buffalo
Mon 7/20
7:55 pm-12:30 am
1 stop7h 35m
Seattle/Tacoma Intl
Fri 7/24
9:25 pm-7:50 am
1 stop7h 25m
$477
BuffaloSeattle
BUF - SEA
BUFSEA
Buffalo
Sat 7/25
12:35 pm-7:10 pm
1 stop9h 35m
Seattle/Tacoma Intl
Sat 8/1
6:40 pm-7:55 am
2 stops10h 15m
$482
BuffaloSeattle
BUF - SEA
BUFSEA
Buffalo
Sat 7/11
5:25 pm-1:10 am
2 stops10h 45m
Seattle/Tacoma Intl
Mon 7/13
11:05 pm-10:25 am
1 stop8h 20m
$482
BuffaloSeattle
BUF - SEA
BUFSEA
Buffalo
Mon 8/17
5:40 am-1:55 pm
2 stops11h 15m
Seattle/Tacoma Intl
Sun 8/23
11:05 pm-10:45 am
1 stop8h 40m
$482
BuffaloSeattle
BUF - SEA
BUFSEA
Buffalo
Fri 7/3
4:10 pm-11:05 pm
2 stops9h 55m
Seattle/Tacoma Intl
Wed 7/15
7:30 pm-8:10 am
2 stops9h 40m
$487
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 May.
| 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 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, October is the cheapest month in which you can book a flight from Buffalo to Seattle (average of $335). 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 May 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.
Comfort
8.0
Boarding
8.1
Entertainment
7.5
Crew
8.6
Overall
8.0
Food
7.0
Reviews
1 / 20
2.0
MediocreDominic,Mar 2026
MCO - SMF
Comfort
8.0
Boarding
8.1
Entertainment
7.5
Crew
8.6
Overall
8.0
Food
7.0
Reviews
1 / 20
2.0
MediocreDominic,Mar 2026
MCO - SMF
Comfort
8.0
Boarding
8.1
Entertainment
7.5
Crew
8.6
Overall
8.0
Food
7.0
Reviews
1 / 20
2.0
MediocreDominic,Mar 2026
MCO - SMF
Comfort
8.0
Boarding
8.1
Entertainment
7.5
Crew
8.6
Overall
8.0
Food
7.0
Reviews
1 / 20
2.0
MediocreDominic,Mar 2026
MCO - SMF
Comfort
8.0
Boarding
8.1
Entertainment
7.5
Crew
8.6
Overall
8.0
Food
7.0
Reviews
1 / 20
2.0
MediocreDominic,Mar 2026
MCO - SMF
Comfort
8.0
Boarding
8.1
Entertainment
7.5
Crew
8.6
Overall
8.0
Food
7.0
Reviews
1 / 20
2.0
MediocreDominic,Mar 2026
MCO - SMF
Related info for your journey
Find useful and relevant information for your journey from 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
Lacey
Edmonds
Leavenworth
Snoqualmie
Tumwater
Tukwila
Puyallup
Kent
Lynnwood
Renton
Ellensburg
Fife
Lakewood
Issaquah
Shoreline
Marysville
Browse thousands of different options on Cheapflights for your next trip
Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.
Alternative routes
Complete your trip
Flights by cabin class
Other flight options
Other flights from Buffalo
Popular flights
Seattle flight routes
Alternative routes for Buffalo to Seattle
See prices for flight routes from nearby airports that may be better suited for you.
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 May 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 May 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 May 11, 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 May 11, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$145 | Average$299 | FlexibilityNo cancel fee | On-time62% | |
| Cheapest$150 | Average$280 | FlexibilityNo cancel fee | On-time62% | |
| Cheapest$238 | Average$531 | FlexibilityNo cancel fee | On-timeN/A | |
| Cheapest$268 | Average$506 | FlexibilityNo cancel fee | On-time69% | |
| Cheapest$328 | Average$490 | FlexibilityNo cancel fee | On-time71% | |
| Cheapest$335 | Average$459 | FlexibilityNo cancel fee | On-time63% |