$131+ Cheap flights from Seattle to Buffalo (SEA - BUF)
This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 5/18. Fares are subject to change and may not be available on all flights or dates of travel.
SEA — BUF
Mar 10 — Mar 171
1 adult, Economy
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1. Tell us where you want to go
Enter your travel information like dates, passengers, trip type (one-way or round trip), and preferred cabin class then click “Find deals”2. Select your favorite providers
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Cheapest flights from Seattle to BuffaloExplore the most affordable flight options available from Seattle to Buffalo. Find the lowest fares from popular airlines and budget airlines, with prices last updated on February 8, 2026.
Explore the most affordable flight options available from Seattle to Buffalo. Find the lowest fares from popular airlines and budget airlines, with prices last updated on February 8, 2026.
This Southwest deal was found by Cheapflights users on 2/7. 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 3/46:45 am
SEA
- BUF
1 stop6h 30m
Southwest
Wed 3/117:00 pm
BUF
- SEA
1 stop7h 55m
Southwest
Deal found 2/7![Southwest logo]()
$311
This Southwest deal was found by Cheapflights users on 2/7. 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.
Tue 3/1011:55 pm
SEA
- BUF
1 stop7h 15m
Southwest
Mon 4/274:00 pm
BUF
- SEA
2 stops11h 55m
Southwest
Deal found 2/7![Southwest logo]()
$337
This Delta deal was found by Cheapflights users on 2/7. 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.
Tue 3/31:30 pm
SEA
- BUF
1 stop6h 27m
Delta
Tue 3/106:15 am
BUF
- SEA
1 stop7h 16m
Delta
Deal found 2/7![Delta logo]()
$353
This Southwest deal was found by Cheapflights users on 2/6. 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.
Wed 4/157:10 pm
SEA
- BUF
2 stops9h 40m
Southwest
Wed 4/226:55 pm
BUF
- SEA
1 stop8h 15m
Southwest
Deal found 2/6![Southwest logo]()
$358
This Orbitz deal was found by Cheapflights users on 2/7. 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 Orbitz is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 5/2711:30 am
SEA
- BUF
1 stop8h 27m
Multiple Airlines
Sun 5/3112:47 pm
BUF
- SEA
1 stop12h 53m
Multiple Airlines
Deal found 2/7![Multiple Airlines logo]()
$360
This Southwest deal was found by Cheapflights users on 2/6. 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 4/77:10 pm
SEA
- BUF
2 stops9h 40m
Southwest
Mon 4/134:00 pm
BUF
- SEA
2 stops11h 05m
Southwest
Deal found 2/6![Southwest logo]()
$364
This American Airlines deal was found by Cheapflights users on 2/5. 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 5/1311:16 am
SEA
- BUF
1 stop7h 20m
American Airlines
Sat 5/163:01 pm
BUF
- SEA
1 stop10h 37m
American Airlines
Deal found 2/5![American Airlines logo]()
$372
This American Airlines deal was found by Cheapflights users on 2/7. 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.
Mon 4/2711:16 am
SEA
- BUF
1 stop7h 20m
American Airlines
Mon 5/45:32 pm
BUF
- SEA
2 stops10h 19m
American Airlines
Deal found 2/7![American Airlines logo]()
$384
This American Airlines deal was found by Cheapflights users on 2/6. 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.
Fri 5/111:28 pm
SEA
- BUF
1 stop11h 53m
American Airlines
Tue 5/56:00 am
BUF
- SEA
1 stop8h 28m
American Airlines
Deal found 2/6![American Airlines logo]()
$385
Best flights from Seattle to BuffaloDiscover carefully curated flight deals from Seattle to Buffalo that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated February 8, 2026.
Discover carefully curated flight deals from Seattle to Buffalo that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated February 8, 2026.
This Southwest deal was found by Cheapflights users on 2/7. 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 3/46:45 am
SEA
- BUF
1 stop6h 30m
Southwest
Wed 3/117:00 pm
BUF
- SEA
1 stop7h 55m
Southwest
Deal found 2/7![Southwest logo]()
$311
This Delta deal was found by Cheapflights users on 2/7. 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.
Wed 3/47:10 am
SEA
- BUF
1 stop8h 50m
Delta
Tue 3/105:50 pm
BUF
- SEA
1 stop7h 25m
Delta
Deal found 2/7![Delta logo]()
$353
This United Airlines deal was found by Cheapflights users on 2/6. 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.
Wed 4/1512:08 pm
SEA
- BUF
1 stop8h 25m
United Airlines
Wed 4/221:52 pm
BUF
- SEA
1 stop8h 08m
United Airlines
Deal found 2/6![United Airlines logo]()
$353
This Delta deal was found by Cheapflights users on 2/7. 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.
Thu 3/511:15 pm
SEA
- BUF
1 stop9h 28m
Delta
Tue 3/1010:32 am
BUF
- SEA
1 stop6h 46m
Delta
Deal found 2/7![Delta logo]()
$353
This Southwest deal was found by Cheapflights users on 2/6. 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.
Wed 4/1511:45 pm
SEA
- BUF
1 stop7h 30m
Southwest
Wed 4/226:55 pm
BUF
- SEA
1 stop8h 15m
Southwest
Deal found 2/6![Southwest logo]()
$353
This Delta deal was found by Cheapflights users on 2/7. 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.
Tue 3/36:15 am
SEA
- BUF
1 stop8h 16m
Delta
Wed 3/116:15 am
BUF
- SEA
1 stop7h 16m
Delta
Deal found 2/7![Delta logo]()
$353
This Delta deal was found by Cheapflights users on 2/7. 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.
Thu 3/511:15 pm
SEA
- BUF
1 stop9h 28m
Delta
Wed 3/116:15 am
BUF
- SEA
1 stop7h 16m
Delta
Deal found 2/7![Delta logo]()
$353
This Delta deal was found by Cheapflights users on 2/7. 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.
Mon 4/2710:40 pm
SEA
- BUF
1 stop9h 26m
Delta
Mon 5/412:50 pm
BUF
- SEA
1 stop8h 38m
Delta
Deal found 2/7![Delta logo]()
$353
This Delta deal was found by Cheapflights users on 2/7. 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.
Tue 3/31:30 pm
SEA
- BUF
1 stop6h 27m
Delta
Tue 3/106:15 am
BUF
- SEA
1 stop7h 16m
Delta
Deal found 2/7![Delta logo]()
$353
This Delta deal was found by Cheapflights users on 2/7. 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.
Tue 3/31:30 pm
SEA
- BUF
1 stop6h 27m
Delta
Thu 3/123:56 pm
BUF
- SEA
1 stop9h 24m
Delta
Deal found 2/7![Delta logo]()
$353
This Delta deal was found by Cheapflights users on 2/7. 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.
Thu 3/56:00 am
SEA
- BUF
1 stop7h 59m
Delta
Thu 3/123:56 pm
BUF
- SEA
1 stop9h 24m
Delta
Deal found 2/7![Delta logo]()
$353
Last-minute flights from Seattle to BuffaloDiscover last-minute flight deals from Seattle to Buffalo. Data last updated February 8, 2026 and is based on user searches.
Discover last-minute flight deals from Seattle to Buffalo. Data last updated February 8, 2026 and is based on user searches.
This Southwest deal was found by Cheapflights users on 2/5. 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 2/256:45 am
SEA
- BUF
1 stop6h 30m
Southwest
Fri 2/273:50 pm
BUF
- SEA
1 stop12h 05m
Southwest
Deal found 2/5![Southwest logo]()
$432
This Delta deal was found by Cheapflights users on 2/7. 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.
Tue 3/31:30 pm
SEA
- BUF
1 stop6h 27m
Delta
Tue 3/106:15 am
BUF
- SEA
1 stop7h 16m
Delta
Deal found 2/7![Delta logo]()
$353
This Southwest deal was found by Cheapflights users on 2/7. 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 3/46:45 am
SEA
- BUF
1 stop6h 30m
Southwest
Wed 3/117:00 pm
BUF
- SEA
1 stop7h 55m
Southwest
Deal found 2/7![Southwest logo]()
$311
This Southwest deal was found by Cheapflights users on 2/5. 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.
Sun 3/87:55 pm
SEA
- BUF
2 stops11h 35m
Southwest
Wed 3/117:00 pm
BUF
- SEA
1 stop7h 55m
Southwest
Deal found 2/5![Southwest logo]()
$442
This Southwest deal was found by Cheapflights users on 2/7. 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.
Tue 3/1011:55 pm
SEA
- BUF
1 stop7h 15m
Southwest
Mon 4/274:00 pm
BUF
- SEA
2 stops11h 55m
Southwest
Deal found 2/7![Southwest logo]()
$337
This American Airlines deal was found by Cheapflights users on 2/8. 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 3/1112:07 am
SEA
- BUF
1 stop8h 42m
American Airlines
Sun 3/155:59 pm
BUF
- SEA
1 stop8h 14m
American Airlines
Deal found 2/8![American Airlines logo]()
$395
This American Airlines deal was found by Cheapflights users on 2/7. 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 3/1912:13 am
SEA
- BUF
1 stop8h 36m
American Airlines
Mon 3/235:59 pm
BUF
- SEA
1 stop9h 25m
American Airlines
Deal found 2/7![American Airlines logo]()
$412
One-way flights from Seattle to BuffaloSearch for one-way flight options from Seattle to Buffalo. Find affordable one-way fares based on user searches. Data last updated February 8, 2026.
Search for one-way flight options from Seattle to Buffalo. Find affordable one-way fares based on user searches. Data last updated February 8, 2026.
This Cheapflightsfares deal was found by Cheapflights users on 2/5. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 5/1811:59 pm
SEA
- BUF
1 stop8h 30m
JetBlue
Deal found 2/5![JetBlue logo]()
$131
This Cheapflightsfares deal was found by Cheapflights users on 2/7. 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 Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 5/1411:30 am
SEA
- BUF
1 stop8h 27m
JetBlue
Deal found 2/7![JetBlue logo]()
$163
This Cheapflightsfares deal was found by Cheapflights users on 2/5. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 5/2611:59 pm
SEA
- BUF
1 stop8h 30m
JetBlue
Deal found 2/5![JetBlue logo]()
$166
This American Airlines deal was found by Cheapflights users on 2/8. 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 5/1411:28 pm
SEA
- BUF
1 stop8h 22m
American Airlines
Deal found 2/8![American Airlines logo]()
$177
This American Airlines deal was found by Cheapflights users on 2/5. 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 4/811:28 pm
SEA
- BUF
1 stop8h 22m
American Airlines
Deal found 2/5![American Airlines logo]()
$180
This Southwest deal was found by Cheapflights users on 2/5. 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 4/87:10 pm
SEA
- BUF
2 stops9h 40m
Southwest
Deal found 2/5![Southwest logo]()
$185
This American Airlines deal was found by Cheapflights users on 2/5. 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 7/223:09 pm
SEA
- BUF
1 stop6h 43m
American Airlines
Deal found 2/5![American Airlines logo]()
$190
This Southwest deal was found by Cheapflights users on 2/5. 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 5/186:15 pm
SEA
- BUF
2 stops10h 35m
Southwest
Deal found 2/5![Southwest logo]()
$198
This Booking.com deal was found by Cheapflights users on 2/5. 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 Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 7/226:15 pm
SEA
- BUF
1 stop13h 11m
Sun Country Air
Deal found 2/5![Sun Country Air logo]()
$203
This Kiwi.com deal was found by Cheapflights users on 2/7. 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 4/1510:42 am
SEA
- BUF
3 stops43h 05m
Multiple Airlines
Deal found 2/7![Multiple Airlines logo]()
$215
This Kiwi.com deal was found by Cheapflights users on 2/8. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 5/146:57 pm
SEA
- BUF
2 stops36h 52m
Frontier
Deal found 2/8![Frontier logo]()
$216
Find flight deals from Seattle to Buffalo
Discover tips and strategies to find the most affordable flight options for your journey from Seattle (SEA) to Buffalo (BUF). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated February 8, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $311 (Southwest) |
One-way from | $131 (Cheapflightsfares) |
Popular in | December |
Cheapest in | September |
Average price | $482 |
Cheapflights Fare Finder
Customize your flight search to find flights from Seattle to Buffalo that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated February 8, 2026.
Use the filters below to find and compare flights from Seattle to Buffalo that are best for you.
Fly from
Seattle
Fly to
Buffalo
Route
Depart
Return
Price
SeattleBuffalo
SEA - BUF
SEABUF
Seattle/Tacoma Intl
Wed 3/4
6:45 am-4:15 pm
1 stop6h 30m
Buffalo
Wed 3/11
7:00 pm-11:55 pm
1 stop7h 55m
$311
SeattleBuffalo
SEA - BUF
SEABUF
Seattle/Tacoma Intl
Wed 3/4
7:10 am-7:00 pm
1 stop8h 50m
Buffalo
Tue 3/10
5:50 pm-10:15 pm
1 stop7h 25m
$353
SeattleBuffalo
SEA - BUF
SEABUF
Seattle/Tacoma Intl
Wed 4/15
12:08 pm-11:33 pm
1 stop8h 25m
Buffalo
Wed 4/22
1:52 pm-7:00 pm
1 stop8h 08m
$353
SeattleBuffalo
SEA - BUF
SEABUF
Seattle/Tacoma Intl
Thu 3/5
11:15 pm-11:43 am
1 stop9h 28m
Buffalo
Tue 3/10
10:32 am-2:18 pm
1 stop6h 46m
$353
SeattleBuffalo
SEA - BUF
SEABUF
Seattle/Tacoma Intl
Wed 4/15
11:45 pm-10:15 am
1 stop7h 30m
Buffalo
Wed 4/22
6:55 pm-12:10 am
1 stop8h 15m
$353
SeattleBuffalo
SEA - BUF
SEABUF
Seattle/Tacoma Intl
Tue 3/3
6:15 am-5:31 pm
1 stop8h 16m
Buffalo
Wed 3/11
6:15 am-10:31 am
1 stop7h 16m
$353
SeattleBuffalo
SEA - BUF
SEABUF
Seattle/Tacoma Intl
Thu 3/5
11:15 pm-11:43 am
1 stop9h 28m
Buffalo
Wed 3/11
6:15 am-10:31 am
1 stop7h 16m
$353
SeattleBuffalo
SEA - BUF
SEABUF
Seattle/Tacoma Intl
Mon 4/27
10:40 pm-11:06 am
1 stop9h 26m
Buffalo
Mon 5/4
12:50 pm-6:28 pm
1 stop8h 38m
$353
SeattleBuffalo
SEA - BUF
SEABUF
Seattle/Tacoma Intl
Tue 3/3
1:30 pm-10:57 pm
1 stop6h 27m
Buffalo
Tue 3/10
6:15 am-10:31 am
1 stop7h 16m
$353
SeattleBuffalo
SEA - BUF
SEABUF
Seattle/Tacoma Intl
Tue 3/3
1:30 pm-10:57 pm
1 stop6h 27m
Buffalo
Thu 3/12
3:56 pm-10:20 pm
1 stop9h 24m
$353
Showing 1-10 of 19 results
Compare providers for flights from Seattle to Buffalo
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 Seattle to Buffalo in February.
| 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 Seattle-Buffalo flights, users find the pricing of FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on Seattle-Buffalo flight deals on Cheapflights vs. FlightHub >95% of the time. Price accuracy is based on data collected from Seattle-Buffalo flight searches over the past month and is updated monthly.
- Most trusted provider: When it comes to deals on Seattle-Buffalo 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 Seattle-Buffalo 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 Seattle to Buffalo
Have a flexible travel schedule? Discover the best time to fly to Buffalo from Seattle with our price prediction graph.
SEA-BUF
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 Seattle to Buffalo
How far ahead should I book a flight from Seattle to Buffalo?
Use this chart to determine the optimal time to book a round-trip flight from Seattle to Buffalo. Price data was last updated on January 30, 2026.
The best time to book flights from Seattle to Buffalo is 11 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 Seattle to Buffalo?
Currently, September is the cheapest month in which you can book a flight from Seattle to Buffalo (average of $151). Flying from Seattle to Buffalo in July is currently the most expensive (average of $274). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.
Reviews of airlines servicing Buffalo
Get insights into the airlines that provide service to Buffalo. 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 Buffalo. Reviews last updated February 8, 2026.
See what other customers who have flown with Southwest, Delta, and United Airlines from Seattle to Buffalo have to say. You can also see how each airline compares in terms of entertainment options, comfort, food, crew/service, and boarding process.
Overall
8.0
Entertainment
7.5
Boarding
8.1
Crew
8.6
Comfort
8.0
Food
7.0
Reviews
1 / 20
2.0
MediocreThomas,Dec 2025
SEA - DEN
Overall
8.0
Entertainment
7.5
Boarding
8.1
Crew
8.6
Comfort
8.0
Food
7.0
Reviews
1 / 20
2.0
MediocreThomas,Dec 2025
SEA - DEN
Overall
8.0
Entertainment
7.5
Boarding
8.1
Crew
8.6
Comfort
8.0
Food
7.0
Reviews
1 / 20
2.0
MediocreThomas,Dec 2025
SEA - DEN
Overall
8.0
Entertainment
7.5
Boarding
8.1
Crew
8.6
Comfort
8.0
Food
7.0
Reviews
1 / 20
2.0
MediocreThomas,Dec 2025
SEA - DEN
Overall
8.0
Entertainment
7.5
Boarding
8.1
Crew
8.6
Comfort
8.0
Food
7.0
Reviews
1 / 20
2.0
MediocreThomas,Dec 2025
SEA - DEN
Overall
8.0
Entertainment
7.5
Boarding
8.1
Crew
8.6
Comfort
8.0
Food
7.0
Reviews
1 / 20
2.0
MediocreThomas,Dec 2025
SEA - DEN
Related info for your journey
Find useful and relevant information for your journey from Seattle to Buffalo. 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 Buffalo?
Book flights to Buffalo if you plan to visit one of these locationsLockport
Cheektowaga
Batavia
Williamsville
Orchard Park
Eden
Amherst
West Seneca
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Seattle and Buffalo flights
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Other flights from Seattle
Browse through other flights departing from Seattle. Flights are based on user searches made on Cheapflights and were last updated on February 8, 2026.
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Top 7 airlines flying from Seattle to Buffalo
Discover the top 7 airlines that operate flights from Seattle to Buffalo. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated February 8, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$131 | Average$270 | FlexibilityNo cancel fee | On-time62% | |
| Cheapest$139 | Average$262 | FlexibilityNo cancel fee | On-time62% | |
| Cheapest$218 | Average$427 | FlexibilityNo cancel fee | On-timeN/A | |
| Cheapest$286 | Average$464 | FlexibilityNo cancel fee | On-time71% | |
| Cheapest$296 | Average$515 | FlexibilityNo cancel fee | On-time69% | |
| Cheapest$335 | Average$456 | FlexibilityNo cancel fee | On-time63% | |
| Cheapest$500 | Average$776 | FlexibilityNo cancel fee | On-time75% |