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Cheap flights from Seattle to Buffalo from $133

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Seattle to Buffalo departing on 9/14. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
1 adult
0 bags

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Find the cheapest flights from Seattle to Buffalo

Cheap round-trip flights

Frontier Logo
6:12 am - 4:02 pmSEA-BUF
6h 50m1 stop
Frontier Logo
2:09 pm - 7:39 pmBUF-SEA
8h 30m1 stop
$265Frontier
Find Deal
dom., oct. 5 - dom., oct. 12
Frontier Logo
6:12 am - 4:02 pmSEA-BUF
6h 50m1 stop
Frontier Logo
2:09 pm - 7:39 pmBUF-SEA
8h 30m1 stop
$275Frontier
Find Deal
dom., oct. 5 - dom., oct. 12
Delta Logo
11:05 pm - 9:38 amSEA-BUF
7h 33m1 stop
Delta Logo
5:50 pm - 12:14 amBUF-SEA
9h 24m1 stop
$324Delta
Find Deal
mar., nov. 11 - sáb., nov. 15
Delta Logo
11:11 pm - 8:21 amSEA-BUF
6h 10m1 stop
Delta Logo
6:00 am - 12:04 pmBUF-SEA
9h 04m1 stop
$325Delta
Find Deal
mar., sep. 16 - mar., sep. 23
American Airlines Logo
5:24 am - 4:55 pmSEA-BUF
8h 31m1 stop
American Airlines Logo
6:25 am - 12:35 pmBUF-SEA
9h 10m1 stop
$331American Airlines
Find Deal
jue., ago. 21 - mar., ago. 26
American Airlines Logo
11:59 pm - 11:04 amSEA-BUF
8h 05m1 stop
American Airlines Logo
1:46 pm - 7:00 pmBUF-SEA
8h 14m1 stop
$336American Airlines
Find Deal
mié., ago. 27 - dom., ago. 31
Southwest Logo
9:10 am - 8:30 pmSEA-BUF
8h 20m1 stop
Southwest Logo
1:50 pm - 10:55 pmBUF-SEA
12h 05m2 stops
$342Southwest
Find Deal
mié., oct. 29 - mar., nov. 4
Southwest Logo
5:15 am - 8:45 pmSEA-BUF
12h 30m2 stops
Southwest Logo
6:00 am - 4:25 pmBUF-SEA
13h 25m1 stop
$348Southwest
Find Deal
jue., oct. 2 - mié., oct. 8
United Airlines Logo
5:02 am - 4:52 pmSEA-BUF
8h 50m2 stops
United Airlines Logo
7:07 am - 11:31 amBUF-SEA
7h 24m1 stop
$365United Airlines
Find Deal
sáb., sep. 20 - jue., sep. 25
United Airlines Logo
11:54 pm - 9:53 amSEA-BUF
6h 59m1 stop
United Airlines Logo
10:55 am - 6:49 pmBUF-SEA
10h 54m2 stops
$376United Airlines
Find Deal
jue., sep. 4 - mar., sep. 9

Frontier flights from Seattle to Buffalo

Our best Frontier deals on Seattle to Buffalo flight tickets
Frontier
Oct 5
SEA6:12 amSeattle/Tacoma Intl
6h 50m
1 stop
BUF4:02 pmBuffalo
Oct 12
BUF2:09 pmBuffalo
8h 30m
1 stop
SEA7:39 pmSeattle/Tacoma Intl
$265
Find similar
Frontier
Oct 5
SEA6:12 amSeattle/Tacoma Intl
6h 50m
1 stop
BUF4:02 pmBuffalo
Oct 12
BUF2:09 pmBuffalo
8h 30m
1 stop
SEA7:39 pmSeattle/Tacoma Intl
$275
Find similar
Frontier
Aug 22
SEA6:17 amSeattle/Tacoma Intl
6h 43m
1 stop
BUF4:00 pmBuffalo
Aug 31
BUF2:22 pmBuffalo
13h 12m
1 stop
SEA12:34 amSeattle/Tacoma Intl
$278
Find similar

American Airlines flights from Seattle to Buffalo

Our best American Airlines deals on Seattle to Buffalo flight tickets
American Airlines
Aug 21
SEA5:24 amSeattle/Tacoma Intl
8h 31m
1 stop
BUF4:55 pmBuffalo
Aug 26
BUF6:25 amBuffalo
9h 10m
1 stop
SEA12:35 pmSeattle/Tacoma Intl
$331
Find similar
American Airlines
Aug 27
SEA11:59 pmSeattle/Tacoma Intl
8h 05m
1 stop
BUF11:04 amBuffalo
Aug 31
BUF1:46 pmBuffalo
8h 14m
1 stop
SEA7:00 pmSeattle/Tacoma Intl
$336
Find similar
American Airlines
Oct 2
SEA1:02 pmSeattle/Tacoma Intl
7h 54m
1 stop
BUF11:56 pmBuffalo
Oct 6
BUF3:34 pmBuffalo
10h 19m
1 stop
SEA10:53 pmSeattle/Tacoma Intl
$337
Find similar

momondo 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, momondo users made 832,500 searches. Data last updated julio 29, 2025.
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

Price

SeattleBuffalo

SEA - BUF

SEABUF

Seattle/Tacoma Intl

dom. 10/5

6:12 am-4:02 pm

1 stop6h 50m

Buffalo

dom. 10/12

2:09 pm-7:39 pm

1 stop8h 30m

$265

SeattleBuffalo

SEA - BUF

SEABUF

Seattle/Tacoma Intl

dom. 10/5

6:12 am-4:02 pm

1 stop6h 50m

Buffalo

dom. 10/12

2:09 pm-7:39 pm

1 stop8h 30m

$275

SeattleBuffalo

SEA - BUF

SEABUF

Seattle/Tacoma Intl

mar. 11/11

11:05 pm-9:38 am

1 stop7h 33m

Buffalo

sáb. 11/15

5:50 pm-12:14 am

1 stop9h 24m

$324

SeattleBuffalo

SEA - BUF

SEABUF

Seattle/Tacoma Intl

mar. 9/16

11:11 pm-8:21 am

1 stop6h 10m

Buffalo

mar. 9/23

6:00 am-12:04 pm

1 stop9h 04m

$325

SeattleBuffalo

SEA - BUF

SEABUF

Seattle/Tacoma Intl

jue. 8/21

5:24 am-4:55 pm

1 stop8h 31m

Buffalo

mar. 8/26

6:25 am-12:35 pm

1 stop9h 10m

$331

SeattleBuffalo

SEA - BUF

SEABUF

Seattle/Tacoma Intl

mié. 8/27

11:59 pm-11:04 am

1 stop8h 05m

Buffalo

dom. 8/31

1:46 pm-7:00 pm

1 stop8h 14m

$336

SeattleBuffalo

SEA - BUF

SEABUF

Seattle/Tacoma Intl

mié. 10/29

9:10 am-8:30 pm

1 stop8h 20m

Buffalo

mar. 11/4

1:50 pm-10:55 pm

2 stops12h 05m

$342

SeattleBuffalo

SEA - BUF

SEABUF

Seattle/Tacoma Intl

jue. 10/2

5:15 am-8:45 pm

2 stops12h 30m

Buffalo

mié. 10/8

6:00 am-4:25 pm

1 stop13h 25m

$348

SeattleBuffalo

SEA - BUF

SEABUF

Seattle/Tacoma Intl

sáb. 9/20

5:02 am-4:52 pm

2 stops8h 50m

Buffalo

jue. 9/25

7:07 am-11:31 am

1 stop7h 24m

$365

SeattleBuffalo

SEA - BUF

SEABUF

Seattle/Tacoma Intl

jue. 9/4

11:54 pm-9:53 am

1 stop6h 59m

Buffalo

mar. 9/9

10:55 am-6:49 pm

2 stops10h 54m

$376

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first
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See travel insights to Buffalo from

How to get the cheapest flight ticket from Seattle to Buffalo

Look no further. We've gone through all the searches for this route on momondo so you have the important information and insights to find the cheapest flight ticket for your trip

What is the cheapest month to fly to Buffalo?

If you aren’t able to travel during the month of September, then book flights to Buffalo from Seattle during October instead. Flights to Buffalo in October, while not as cheap as those in September, still average around $429.

What is the cheapest day to depart on your flight to Buffalo?

Our data shows that Wednesday is the least expensive day to fly to Buffalo. Tickets to fly out on this day can be as low as $465. Flights from Seattle to Buffalo on a Saturday will generally be more expensive and average around $611. Keep in mind that these prices on both days could fluctuate depending on the season and the demand.

What is the cheapest time of day to depart on your flight to Buffalo?

In the evening is the cheapest time of day to fly from Seattle to Buffalo when you can find flight prices for as low as $467. Flying to Buffalo in the evening is an ideal time because this is during off-peak travel hours. In the afternoon is when there is more demand to fly to Buffalo, so prices are often more expensive at around $547 per ticket.

What is the cheapest Seattle/Tacoma Intl to Buffalo flight route?

Fly from Seattle/Tacoma Intl to Buffalo for the best Seattle/Tacoma Intl - Buffalo flight prices

How far in advance should I book a flight to Buffalo?

You are more likely to see cheaper flights to Buffalo from Seattle when booking weeks ahead of your departure date. In general, you can expect to find flights to Buffalo for around $484 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Buffalo from Seattle for as low as $278 on momondo.

What cabin class options are available on Seattle/Tacoma Intl to Buffalo flights?

There are 1 cabin classes available to choose from on Seattle/Tacoma Intl to Buffalo flights. Cabin price and availability will vary by airline so perform a search above to find the right deals for you.

How have Seattle to Buffalo flight prices changed over time?

As of July 2025, prices for Seattle to Buffalo flights are approximately 3% cheaper when compared to flights at the same time last year.

When to book flights from Seattle to Buffalo

Are you open to changing your travel dates? Check out the ideal times to fly from Seattle to Buffalo according to our flight data. Find out which month and days have the cheapest flights.
Estimated round-trip price

Cheap Seattle to Buffalo (SEA to BUF) flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from Seattle to Buffalo

Best Price Found

$133

Fastest flight time

6h 05m

Direct flights

None

Airports in Buffalo

1 airport
The best one-way flight to Buffalo from Seattle in the past 72 hours is $133. The best round-trip flight deal from Seattle to Buffalo found on momondo in the last 72 hours is $265.
The fastest flight from Seattle to Buffalo takes 6h 05m
There are no direct flights from Seattle to Buffalo. Popular non-direct route for this connection is Seattle/Tacoma Intl Airport - Buffalo Airport.
There is 1 airport near Buffalo: Buffalo (BUF)
Search flight deals

  • How far is Seattle/Tacoma Intl to Buffalo by plane?

    Buffalo is 2109.4 mi away from Seattle/Tacoma Intl. Typically, this will take 6h 10m by plane in normal conditions.

  • When did momondo last update prices for flights from Seattle/Tacoma Intl Airport to Buffalo Airport?

    Prices for flights from Seattle/Tacoma Intl Airport to Buffalo Airport are refreshed on a daily basis.

  • How many operators does momondo search for flights from Seattle/Tacoma Intl Airport to Buffalo Airport?

  • How old do you have to be to fly from Seattle/Tacoma Intl Airport to Buffalo Airport?

    The minimum age a child must be to fly alone is five but airlines that offer an unaccompanied minor (UNMR) service will have their own age restrictions, including rules around flight length, timings, and stopovers. We always recommend checking with the individual airline you are booking with to travel from Seattle/Tacoma Intl Airport to Buffalo Airport.

  • What documentation or ID do you need to fly to Buffalo Airport?

    The necessary travel and health documents for your Buffalo Airport trip may vary depending on your travel plans and individual circumstances. Generally, you should have various documents, such as a national ID card or driver's license and a passport that is valid for six months beyond your scheduled arrival date. We recommend seeking advice from your airline or a trusted third party, such as IATA.

  • What is the most popular plane model from Seattle to Buffalo?

  • What is the most popular airline from Seattle to Buffalo?

Best airlines flying from Seattle to Buffalo

Compare and see reviews for airlines that fly from Seattle to Buffalo with momondo
Airline
Rating
Free Cancellation
Price
FrontierPriceFrom $159Free CancellationRating
5.9
3,238 reviews
Search Frontier flights
JetBluePriceFrom $220Free CancellationRating
7.2
2,913 reviews
Search JetBlue flights
DeltaPriceFrom $326Free CancellationRating
8.0
7,977 reviews
Search Delta flights
American AirlinesPriceFrom $342Free CancellationRating
7.2
10,000 reviews
Search American Airlines flights
SouthwestPriceFrom $342Free CancellationRating
8.0
4,238 reviews
Search Southwest flights
United AirlinesPriceFrom $342Free CancellationRating
7.4
8,899 reviews
Search United Airlines flights
Alaska AirlinesPriceFrom $445Free CancellationRating
8.0
10,000 reviews
Search Alaska Airlines flights

Traveling to a place near Buffalo?

Book flights to Buffalo if you plan to visit one of these locations
Batavia
Williamsville
Amherst
Tonawanda
Cheektowaga
Grand Island
Lockport
Orchard Park
West Seneca
East Aurora
Bowmansville
Eden
Angola

Why use momondo?

Why should I use momondo to find a flight deal from Seattle to Buffalo?

momondo compares prices from hundreds of airlines and agents so you can find and book the best deal on flights from Seattle to Buffalo. Millions of users trust and use momondo every year so you are in good hands.

Can I find flights from Seattle to Buffalo with flexible booking policies on momondo?

Yes. momondo enables you to select and highlight flights to Buffalo from Seattle with this policy.

How can momondo help me find flights from Seattle to Buffalo?

momondo provides multiple filters to help you find the best flight to Buffalo from Seattle. Filter by price, airline, airports, cabin, aircraft, payment method, number of stops and more.

I’m not ready to book a flight from Seattle to Buffalo right now. Can momondo alert me if prices change?

Yes. momondo can track prices for Seattle to Buffalo flights and alert you when they change. Perform a search to set up the price alert. All that is required is a valid email address.

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