$135+ 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 9/17. Fares are subject to change and may not be available on all flights or dates of travel.
SEA — BUF
Sep 4 — Sep 111
Round-trip
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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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 Seattle to Buffalo
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Best
Last-minute
One-way
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 August 5, 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 August 5, 2026.
This Delta deal was found by Cheapflights users on 8/3. 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 9/55:30 am -
1 stop6h 44m
Fri 9/116:20 am -
1 stop7h 06m
Deal found 8/3![Delta logo]()
$367
This Delta deal was found by Cheapflights users on 8/4. 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 9/55:30 am -
1 stop6h 44m
Wed 9/93:53 pm -
1 stop10h 27m
Deal found 8/4![Delta logo]()
$372
This Delta deal was found by Cheapflights users on 8/1. 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 9/96:00 am -
1 stop6h 13m
Wed 9/97:25 pm -
1 stop7h 30m
Deal found 8/1![Delta logo]()
$377
This Delta deal was found by Cheapflights users on 8/4. 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 9/111:10 pm -
1 stop9h 12m
Sun 9/612:16 pm -
1 stop9h 49m
Deal found 8/4![Delta logo]()
$379
This Delta deal was found by Cheapflights users on 8/4. 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 9/211:18 am -
1 stop8h 51m
Wed 9/93:53 pm -
1 stop10h 27m
Deal found 8/4![Delta logo]()
$384
This United Airlines deal was found by Cheapflights users on 8/1. 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.
Tue 9/17:00 am -
1 stop6h 56m
Wed 9/97:00 am -
2 stops10h 24m
Deal found 8/1![United Airlines logo]()
$389
This Delta deal was found by Cheapflights users on 8/4. 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 9/2311:35 am -
1 stop9h 17m
Sat 9/263:53 pm -
1 stop10h 27m
Deal found 8/4![Delta logo]()
$391
This American Airlines deal was found by Cheapflights users on 8/4. 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 9/1610:45 pm -
1 stop8h 33m
Sat 9/196:56 pm -
1 stop8h 15m
Deal found 8/4![American Airlines logo]()
$393
This Southwest deal was found by Cheapflights users on 8/1. 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 9/111:05 pm -
2 stops10h 25m
Wed 9/93:00 pm -
2 stops11h 10m
Deal found 8/1![Southwest logo]()
$394
This Southwest deal was found by Cheapflights users on 8/4. 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 9/111:05 pm -
2 stops10h 25m
Tue 9/86:25 pm -
1 stop8h 15m
Deal found 8/4![Southwest logo]()
$396
This Southwest deal was found by Cheapflights users on 8/5. 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 10/147:45 pm -
2 stops11h 40m
Sat 10/1712:30 pm -
2 stops12h 05m
Deal found 8/5![Southwest logo]()
$401
This American Airlines deal was found by Cheapflights users on 8/4. 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 9/49:58 pm -
1 stop9h 20m
Sun 9/65:11 am -
1 stop7h 18m
Deal found 8/4![American Airlines logo]()
$403
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 August 5, 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 August 5, 2026.
This United Airlines deal was found by Cheapflights users on 8/1. 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.
Tue 9/110:58 pm -
1 stop7h 57m
Wed 9/91:56 pm -
1 stop8h 19m
Deal found 8/1![United Airlines logo]()
$384
This Southwest deal was found by Cheapflights users on 8/1. 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 9/111:05 pm -
2 stops10h 25m
Wed 9/93:00 pm -
2 stops11h 10m
Deal found 8/1![Southwest logo]()
$394
This Delta deal was found by Cheapflights users on 8/4. 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 9/111:10 pm -
1 stop6h 05m
Fri 9/47:52 pm -
1 stop7h 02m
Deal found 8/4![Delta logo]()
$415
This Southwest deal was found by Cheapflights users on 7/31. 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 9/157:10 am -
2 stops11h 00m
Tue 9/226:00 am -
1 stop10h 00m
Deal found 7/31![Southwest logo]()
$420
This Southwest deal was found by Cheapflights users on 8/2. 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 8/2411:05 pm -
1 stop9h 15m
Sat 8/2910:10 am -
2 stops11h 05m
Deal found 8/2![Southwest logo]()
$420
This Delta deal was found by Cheapflights users on 7/31. 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 8/1911:56 am -
1 stop9h 03m
Mon 8/247:52 pm -
1 stop7h 02m
Deal found 7/31![Delta logo]()
$499
This Southwest deal was found by Cheapflights users on 8/2. 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 10/711:30 am -
1 stop9h 55m
Sun 10/117:55 pm -
1 stop7h 55m
Deal found 8/2![Southwest logo]()
$439
This Southwest deal was found by Cheapflights users on 8/1. 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 10/16:50 pm -
2 stops10h 00m
Fri 10/97:35 pm -
1 stop8h 00m
Deal found 8/1![Southwest logo]()
$444
This Southwest deal was found by Cheapflights users on 8/3. 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 10/312:10 am -
1 stop7h 05m
Fri 10/97:35 pm -
1 stop8h 00m
Deal found 8/3![Southwest logo]()
$487
Last-minute flights from Seattle to BuffaloDiscover last-minute flight deals from Seattle to Buffalo. Data last updated August 5, 2026 and is based on user searches.
Discover last-minute flight deals from Seattle to Buffalo. Data last updated August 5, 2026 and is based on user searches.
This Delta deal was found by Cheapflights users on 8/4. 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 9/111:10 pm -
1 stop9h 12m
Sun 9/612:16 pm -
1 stop9h 49m
Deal found 8/4![Delta logo]()
$379
This United Airlines deal was found by Cheapflights users on 8/1. 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.
Tue 9/17:00 am -
1 stop6h 56m
Wed 9/97:00 am -
2 stops10h 24m
Deal found 8/1![United Airlines logo]()
$389
This Southwest deal was found by Cheapflights users on 8/1. 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 9/111:05 pm -
2 stops10h 25m
Wed 9/93:00 pm -
2 stops11h 10m
Deal found 8/1![Southwest logo]()
$394
This Southwest deal was found by Cheapflights users on 8/4. 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 9/111:05 pm -
2 stops10h 25m
Tue 9/86:25 pm -
1 stop8h 15m
Deal found 8/4![Southwest logo]()
$396
This Delta deal was found by Cheapflights users on 8/4. 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 9/211:18 am -
1 stop8h 51m
Wed 9/93:53 pm -
1 stop10h 27m
Deal found 8/4![Delta logo]()
$384
This American Airlines deal was found by Cheapflights users on 8/4. 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 9/49:58 pm -
1 stop9h 20m
Sun 9/65:11 am -
1 stop7h 18m
Deal found 8/4![American Airlines logo]()
$403
This Delta deal was found by Cheapflights users on 8/3. 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 9/55:30 am -
1 stop6h 44m
Fri 9/116:20 am -
1 stop7h 06m
Deal found 8/3![Delta logo]()
$367
This Delta deal was found by Cheapflights users on 8/4. 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 9/55:30 am -
1 stop6h 44m
Wed 9/93:53 pm -
1 stop10h 27m
Deal found 8/4![Delta logo]()
$372
This Delta deal was found by Cheapflights users on 8/1. 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 9/96:00 am -
1 stop6h 13m
Wed 9/97:25 pm -
1 stop7h 30m
Deal found 8/1![Delta logo]()
$377
This American Airlines deal was found by Cheapflights users on 8/4. 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 9/1610:45 pm -
1 stop8h 33m
Sat 9/196:56 pm -
1 stop8h 15m
Deal found 8/4![American Airlines logo]()
$393
This Delta deal was found by Cheapflights users on 8/4. 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 9/2311:35 am -
1 stop9h 17m
Sat 9/263:53 pm -
1 stop10h 27m
Deal found 8/4![Delta logo]()
$391
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 August 5, 2026.
Search for one-way flight options from Seattle to Buffalo. Find affordable one-way fares based on user searches. Data last updated August 5, 2026.
This Kiwi.com deal was found by Cheapflights users on 8/4. 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 9/178:15 pm -
2 stops37h 40m
Deal found 8/4![Frontier logo]()
$135
This Kiwi.com deal was found by Cheapflights users on 8/4. 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 9/128:15 pm -
2 stops37h 40m
Deal found 8/4![Frontier logo]()
$138
This Kiwi.com deal was found by Cheapflights users on 8/1. 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 9/268:15 pm -
2 stops37h 40m
Deal found 8/1![Frontier logo]()
$142
This Kiwi.com deal was found by Cheapflights users on 7/31. 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 9/198:15 pm -
2 stops37h 40m
Deal found 7/31![Frontier logo]()
$143
This Kiwi.com deal was found by Cheapflights users on 8/3. 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.
Fri 8/281:35 pm -
2 stops17h 54m
Deal found 8/3![Frontier logo]()
$147
This Kiwi.com deal was found by Cheapflights users on 8/1. 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 8/3110:34 am -
2 stops20h 55m
Deal found 8/1![Frontier logo]()
$152
This Kiwi.com deal was found by Cheapflights users on 8/4. 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.
Fri 9/118:15 pm -
2 stops42h 30m
Deal found 8/4![Frontier logo]()
$160
This Kiwi.com deal was found by Cheapflights users on 8/3. 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 8/249:29 pm -
2 stops34h 00m
Deal found 8/3![Frontier logo]()
$172
This Kiwi.com deal was found by Cheapflights users on 8/3. 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 8/252:37 pm -
2 stops16h 52m
Deal found 8/3![Frontier logo]()
$173
This Kiwi.com deal was found by Cheapflights users on 8/3. 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 8/268:53 pm -
2 stops18h 32m
Deal found 8/3![Frontier logo]()
$177
This Kiwi.com deal was found by Cheapflights users on 8/1. 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 9/510:34 am -
2 stops20h 55m
Deal found 8/1![Frontier logo]()
$182
This Delta deal was found by Cheapflights users on 8/1. 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 9/66:05 am -
1 stop9h 18m
Deal found 8/1![Delta logo]()
$184
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 August 5, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $367 (Delta) |
One-way from | $135 (Kiwi.com) |
Popular in | December |
Cheapest in | March |
Average price | $506 |
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 August 5, 2026.
Use the filters below to find and compare flights from Seattle to Buffalo that are best for you.
Fly from
Fly to
Route
Depart
Return
Cheapest round-trip
SeattleBuffalo
SEA - BUF
SEABUF
Seattle/Tacoma Intl
Tue 9/1
10:58 pm-9:55 am
1 stop7h 57m
Buffalo
Wed 9/9
1:56 pm-7:15 pm
1 stop8h 19m
$384
SeattleBuffalo
SEA - BUF
SEABUF
Seattle/Tacoma Intl
Tue 9/1
11:05 pm-12:30 pm
2 stops10h 25m
Buffalo
Wed 9/9
3:00 pm-11:10 pm
2 stops11h 10m
$394
Quickest round-trip
SeattleBuffalo
SEA - BUF
SEABUF
Seattle/Tacoma Intl
Tue 9/1
11:10 pm-8:15 am
1 stop6h 05m
Buffalo
Fri 9/4
7:52 pm-11:54 pm
1 stop7h 02m
$415
SeattleBuffalo
SEA - BUF
SEABUF
Seattle/Tacoma Intl
Tue 9/15
7:10 am-9:10 pm
2 stops11h 00m
Buffalo
Tue 9/22
6:00 am-1:00 pm
1 stop10h 00m
$420
SeattleBuffalo
SEA - BUF
SEABUF
Seattle/Tacoma Intl
Mon 8/24
11:05 pm-11:20 am
1 stop9h 15m
Buffalo
Sat 8/29
10:10 am-6:15 pm
2 stops11h 05m
$420
SeattleBuffalo
SEA - BUF
SEABUF
Seattle/Tacoma Intl
Wed 10/7
11:30 am-12:25 am
1 stop9h 55m
Buffalo
Sun 10/11
7:55 pm-12:50 am
1 stop7h 55m
$439
SeattleBuffalo
SEA - BUF
SEABUF
Seattle/Tacoma Intl
Thu 10/1
6:50 pm-7:50 am
2 stops10h 00m
Buffalo
Fri 10/9
7:35 pm-12:35 am
1 stop8h 00m
$444
SeattleBuffalo
SEA - BUF
SEABUF
Seattle/Tacoma Intl
Sat 10/3
12:10 am-10:15 am
1 stop7h 05m
Buffalo
Fri 10/9
7:35 pm-12:35 am
1 stop8h 00m
$487
SeattleBuffalo
SEA - BUF
SEABUF
Seattle/Tacoma Intl
Wed 8/19
11:56 am-11:59 pm
1 stop9h 03m
Buffalo
Mon 8/24
7:52 pm-11:54 pm
1 stop7h 02m
$499
Cheapest one-way
SeattleBuffalo
SEA - BUF
SEABUF
Seattle/Tacoma Intl
Mon 8/31
11:05 pm-11:20 am
1 stop9h 15m
$196
Showing 1-10 of 20 resultsSorted by cheapest first
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 August.
| 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?
The best time to book flights from Seattle to Buffalo is 39 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, March is the cheapest month in which you can book a flight from Seattle to Buffalo (average of $387). Flying from Seattle to Buffalo in December is currently the most expensive (average of $654). 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 Seattle to Buffalo?
Airfare is below average for this route at the moment.
Seattle to Buffalo flights typically cost between $436 and $646 in September.The cheapest round-trip price found within the last 5 days was $367 on Delta (Sep 5-Sep 11).
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 August 5, 2026.
See what other customers who have flown with Southwest,Delta, andUnited 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
Comfort
8.0
Food
7.0
Crew
8.6
Boarding
8.1
Entertainment
7.5
Reviews
1 / 20
8.0
ExcellentLibby,Jun 2026
TUS - LAS
Overall
8.0
Comfort
8.0
Food
7.0
Crew
8.6
Boarding
8.1
Entertainment
7.5
Reviews
1 / 20
8.0
ExcellentLibby,Jun 2026
TUS - LAS
Overall
8.0
Comfort
8.0
Food
7.0
Crew
8.6
Boarding
8.1
Entertainment
7.5
Reviews
1 / 20
8.0
ExcellentLibby,Jun 2026
TUS - LAS
Overall
8.0
Comfort
8.0
Food
7.0
Crew
8.6
Boarding
8.1
Entertainment
7.5
Reviews
1 / 20
8.0
ExcellentLibby,Jun 2026
TUS - LAS
Overall
8.0
Comfort
8.0
Food
7.0
Crew
8.6
Boarding
8.1
Entertainment
7.5
Reviews
1 / 20
8.0
ExcellentLibby,Jun 2026
TUS - LAS
Overall
8.0
Comfort
8.0
Food
7.0
Crew
8.6
Boarding
8.1
Entertainment
7.5
Reviews
1 / 20
8.0
ExcellentLibby,Jun 2026
TUS - LAS
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
Amherst
Williamsville
Orchard Park
Eden
Bowmansville
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Other flights to Buffalo
Explore flights to Buffalo departing from other origins. Flights are based on user searches made on Cheapflights and were last updated on August 5, 2026.
Complete your trip
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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 August 5, 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 August 5, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$81 | Average$339 | FlexibilityNo cancel fee | On-time62% | |
| Cheapest$131 | Average$411 | FlexibilityNo cancel fee | On-time62% | |
| Cheapest$274 | Average$513 | FlexibilityNo cancel fee | On-time69% | |
| Cheapest$286 | Average$519 | FlexibilityNo cancel fee | On-timeN/A | |
| Cheapest$286 | Average$507 | FlexibilityNo cancel fee | On-time71% | |
| Cheapest$402 | Average$516 | FlexibilityNo cancel fee | On-time63% | |
| Cheapest$696 | Average$800 | FlexibilityNo cancel fee | On-time75% |