Cheap flights from Buffalo to Seattle

Round-trip
Economy
Buffalo (BUF)
Seattle (SEA)
Depart
Return
Any month
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The best prices from Buffalo to Seattle/Tacoma Intl are usually found in February or October, booked 60 days in advance, depart on a Wednesday or Tuesday and return on a Tuesday

How to find the cheapest flight from
Buffalo (BUF) to Seattle (SEA)

All the information you need to plan the best BUF to SEA flight in 2021: compare Buffalo to Seattle flight prices with the expected peak season, weather and rainfall in Seattle.
BUF - SEA
Price
C$ 386 - C$ 614
SEA
Temperature
5 - 19 °C
SEA
Precipitation
18 - 168 mm

Popular in

December

High demand for flights, 25% potential price rise

Cheapest in

February

Best time to find cheap flights, 16% potential price drop

Round-trip from

R$ 386

From Buffalo to Seattle/Tacoma Intl

One-way from

C$ 201

One-way flight from Buffalo to Seattle/Tacoma Intl

Flight route prices based on searches on Cheapflights within the last 3 days, monthly prices based on aggregated historical data.
What is the cheapest day to fly round-trip from Buffalo to Seattle?

Leaving on a Tuesday is a viable option for saving on travel. Heavily demanded days of the week can typically drive up the prices you see. Booking your travel for a less competitive day can save up to 58% on the overall cost on flights from Buffalo to Seattle.

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

To save on the cost of your flight from Buffalo to Seattle, book at least 60 days before your planned departure. Booking around this time can save you about 44% on the cost of this flight compared to booking a flight leaving this week. We have found prices from C$ 491 if you need a flight within two weeks. For flights within the next 72 hours, you can find tickets from as low as C$ 593.

What is the cheapest month to fly from Buffalo to Seattle?

February can be a great time to fly to Seattle from Buffalo with a flight ticket averaging about C$ 460. Cheapflights users have found deals in the month of February for as cheap as C$ 211. The most expensive prices can be found in the month of December.

When is the cheapest time to fly from Buffalo to Seattle (BUF - SEA)?

Unlike in the morning, when flights are generally more expensive, you can save up to 53% on flights from Buffalo to Seattle by exploring options for tickets in the evening.

Cheap flights from Buffalo to Seattle in September, October 2021

The best prices found for BUF to SEA flights for September, October
8 Oct - 9 Oct
C$ 292pp
BUF
Buffalo
Frontier
 
1 STOP
SEA
Seattle/Tacoma Intl
SEA
Seattle/Tacoma Intl
Frontier
 
1 STOP
BUF
Buffalo
14 Oct - 20 Oct
C$ 358pp
BUF
Buffalo
United Airlines
   
2 STOPS
SEA
Seattle/Tacoma Intl
SEA
Seattle/Tacoma Intl
United Airlines
 
1 STOP
BUF
Buffalo
13 Oct - 18 Oct
C$ 367pp
BUF
Buffalo
United Airlines
 
1 STOP
SEA
Seattle/Tacoma Intl
SEA
Seattle/Tacoma Intl
United Airlines
 
1 STOP
BUF
Buffalo

Buffalo to Seattle 2021 flight deals

Cheap flights to Seattle from Buffalo found for this year
8 Oct - 9 Oct
C$ 292pp
BUF
Buffalo
Frontier
 
1 STOP
SEA
Seattle/Tacoma Intl
SEA
Seattle/Tacoma Intl
Frontier
 
1 STOP
BUF
Buffalo
14 Oct - 20 Oct
C$ 358pp
BUF
Buffalo
United Airlines
   
2 STOPS
SEA
Seattle/Tacoma Intl
SEA
Seattle/Tacoma Intl
United Airlines
 
1 STOP
BUF
Buffalo
13 Oct - 18 Oct
C$ 367pp
BUF
Buffalo
United Airlines
 
1 STOP
SEA
Seattle/Tacoma Intl
SEA
Seattle/Tacoma Intl
United Airlines
 
1 STOP
BUF
Buffalo

Last minute flights from Buffalo to Seattle

Late deals on round-trip flights to Seattle from Buffalo, departing today and this week
4 Oct - 26 Oct
C$ 390pp
BUF
Buffalo
Multiple Airlines
   
2 STOPS
SEA
Seattle/Tacoma Intl
SEA
Seattle/Tacoma Intl
Multiple Airlines
 
1 STOP
BUF
Buffalo
4 Oct - 25 Oct
C$ 415pp
BUF
Buffalo
Multiple Airlines
     
3 STOPS
SEA
Seattle/Tacoma Intl
SEA
Seattle/Tacoma Intl
Frontier
 
1 STOP
BUF
Buffalo
4 Oct - 26 Oct
C$ 426pp
BUF
Buffalo
American Airlines
 
1 STOP
SEA
Seattle/Tacoma Intl
SEA
Seattle/Tacoma Intl
American Airlines
 
1 STOP
BUF
Buffalo

One-way flights to Seattle/Tacoma Intl from Buffalo

The cheapest one-way flights from Buffalo to Seattle
1:08 a.m. - 5:45 a.m.
Delta
1 stop
7h 37m
BUF - SEA
Delta
C$ 201
Delta
10:00 a.m. - 4:28 p.m.
Alaska Airlines
1 stop
9h 28m
BUF - SEA
Alaska Airlines
C$ 202
Alaska Airlines
1:03 p.m. - 6:20 p.m.
Alaska Airlines
1 stop
8h 17m
BUF - SEA
Alaska Airlines
C$ 372
Alaska Airlines

Related info for your journey

Useful info, stats and facts about <span class="emphasized">Buffalo</span> to <span class="emphasized">Seattle</span> flights.

Flight FAQs

From Buffalo to Seattle

Which airlines flying from Buffalo to Seattle/Tacoma Intl have flexible cancellations due to COVID-19?

Some of the carriers operating flights from Buffalo to Seattle/Tacoma Intl that may be offering flexible cancellation policies are American Airlines, Delta, and United Airlines. Our site will let you filter for all airlines offering greater flexibility due to COVID-19.

Can I find flights from Buffalo to Seattle for under C$ 300 on Cheapflights?

Yes, there are multiple flights from Buffalo to Seattle for under C$ 300. The cheapest flight booked recently is on Frontier for just C$ 292, but on average you can expect to pay C$ 424.

Are there last-minute flights available from Buffalo to Seattle for under C$ 400?

There are currently 14+ open flights from Buffalo to Seattle within the next 7 days for less than C$ 400.

How popular is this Buffalo to Seattle flight route?

The Buffalo to Seattle/Tacoma Intl flight path was viewed by 169 users in the past month. Keep an eye out for changes in search interest prior to high and low season.

What are the cheapest airlines flying from Buffalo to Seattle round-trip?

According to our current data, Frontier (C$ 292), United Airlines (C$ 358), and Delta (C$ 400) offers the cheapest pricing from Buffalo to Seattle. Frontier is priced at 36% lower than the current average price of a flight leaving 3 months from now.

What are the cheapest flights from Buffalo to Seattle?

Looking for the cheapest flight from Buffalo to Seattle? While on average our users pay C$ 749, our data indicates the cheapest price to be C$ 202. The most popular route (Buffalo - Seattle/Tacoma Intl), is priced around C$ 421.

What are the most popular airlines that fly from Buffalo to Seattle?

Before booking your flight from Buffalo to Seattle check out the most popular airlines for this route: American Airlines, JetBlue or Delta.

COVID Restrictions

View COVID Travel Restrictions for Seattle, WA

Do I need a COVID test to fly to Seattle from Buffalo?

Information is based on travel restrictions for travel to Seattle/Tacoma Intl within the United States

Most visitors from Buffalo need to provide a negative COVID-19 test result and/or quarantine to enter Seattle/Tacoma Intl.

COVID-19 testing requirements
Visitors from Buffalo must present a negative RT-PCR (NAAT) or Antigen (quick-test) test taken 72 hours before departing to Seattle/Tacoma Intl.

Quarantine requirements
Visitors from Buffalo are not required to quarantine after entering Seattle/Tacoma Intl.

Do I need a test to fly back to Buffalo from Seattle?

Returning to Buffalo from Seattle/Tacoma Intl

COVID-19 testing requirements
Visitors from Seattle/Tacoma Intl must present a negative RT-PCR (NAAT) test taken 72 hours before departing to Buffalo.

Quarantine requirements
Visitors from Seattle/Tacoma Intl are not required to quarantine after entering Buffalo.

Hide COVID Travel Restrictions for Seattle, WA

Destination information for Seattle

Things to know before you go - useful duration and weather info for your trip from Buffalo to Seattle.
Average temperature for September in Seattle
23.0 °C
Avg rainfall for September in Seattle
26.0 mm

Airports servicing Buffalo

Airports servicing Seattle

Top 5 airlines flying from Buffalo to Seattle/Tacoma Intl

The chart below displays the airlines Cheapflights users travelling from Buffalo to Seattle choose most often. Cheapest and average prices are based on aggregated data from the past 12 months.
Airline Cheapest Average Flexibility On-time COVID-19 safety
Frontier
C$ 153 C$ 386 No cancel fee 62%
Search Frontier flights
Delta
C$ 214 C$ 545 No cancel fee N/A
Search Delta flights
United Airlines
C$ 272 C$ 585 No cancel fee 69%
Search United Airlines flights
JetBlue
C$ 298 C$ 430 No cancel fee 62%
Search JetBlue flights
American Airlines
C$ 386 C$ 602 No cancel fee 71%
Search American Airlines flights
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