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Buffalo Niagara International Airport to Seattle-Tacoma International Airport flight
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Cheap Flights from Buffalo Niagara International Airport to Seattle-Tacoma International Airport

Search for flights from Buffalo to Seattle and check out affordable one-way and round-trip options.

  • One way
  • Round-trip
sortSort by: Lowest Price
  • Sort by: Lowest Price
  • Sort by: Earliest Flight
      • BUF21:43
        13h 47m
        1 stop
        SEA08:30
        Buffalo - Seattle|Wed, May 15|Frontier Airlines
        $95$185
        48% OFF
        48% OFF
        $185$95
      • BUF19:02
        28h 33m
        1 stop
        SEA20:35
        Buffalo - Seattle|Mon, May 6|Frontier Airlines
        $110$185
        40% OFF
        40% OFF
        $185$110
      • BUF19:07
        17h 15m
        1 stop
        SEA09:22
        Buffalo - Seattle|Fri, May 17|Frontier Airlines
        $111$185
        40% OFF
        40% OFF
        $185$111
      • BUF19:02
        28h 33m
        1 stop
        SEA20:35
        Buffalo - Seattle|Mon, May 13|Frontier Airlines
        $111
        $111
      • BUF19:07
        14h 57m
        1 stop
        SEA07:04
        Buffalo - Seattle|Sat, May 18|Frontier Airlines
        $111
        $111
      • BUF11:08
        29h 47m
        1 stop
        SEA13:55
        Buffalo - Seattle|Fri, May 10|Frontier Airlines
        $111
        $111
      • BUF22:56
        24h 53m
        1 stop
        SEA20:49
        Buffalo - Seattle|Wed, May 29|Frontier Airlines
        $112
        $112
      • BUF22:56
        12h 34m
        1 stop
        SEA08:30
        Buffalo - Seattle|Wed, May 22|Frontier Airlines
        $119
        $119
      • BUF16:36
        10h 19m
        1 stop
        SEA23:55
        Buffalo - Seattle|Wed, Jun 12|American Airlines
        $120
        $120
      • BUF21:43
        37h 57m
        2 stops
        SEA08:40
        Buffalo - Seattle|Wed, May 8|Frontier Airlines
        $125
        $125
      • BUF13:00
        3h 5m
        Direct
        SEA14:00
        Buffalo - Seattle|Mon, May 13|Frontier Airlines
        Find More Flights
        Find More Flights

Crossed out prices are calculated based on the average price of the corresponding route on Trip.com.

Selected Airlines from Buffalo Niagara International Airport to Seattle-Tacoma International Airport

See which airlines fly from Buffalo to Seattle. Find the airline that best meets your travel needs by comparing prices and treat yourself to an enjoyable journey.

Frontier Airlines
From $95
American Airlines
From $120
Jetblue Airways
From $135
Delta Air Lines
From $147
United Airlines
From $156
Sun Country Airlines
From $159
Alaska Airlines
From $162
Southwest Airlines
From $242
ANA airlines
Find more flights and airlines
Flight Schedule from Buffalo Niagara International Airport to Seattle-Tacoma International Airport

Check the schedule for flights from Buffalo to Seattle and find the flight that best matches your travel plans.

Flight info.
Departure
Arrival
Weekly Schedule

  1. DL2664

    Delta Air Lines

    06:00

    BUF

    2.1h

    08:07

    ATL

    SMTWTFS
    Search

  2. DL995

    Delta Air Lines

    10:10

    ATL

    3.5h

    11:43

    DEN

    SMTWTFS

  3. F91175

    Frontier Airlines

    07:31

    DEN

    3.0h

    09:28

    SEA

    S----F-

  4. DL2342

    Delta Air Lines

    06:20

    BUF

    1.1h

    07:29

    DTW

    -MTWTFS
    Search

  5. DL1614

    Delta Air Lines

    08:50

    DTW

    3.5h

    10:23

    DEN

    -MTWTFS

  6. F93405

    Frontier Airlines

    19:08

    DEN

    3.0h

    21:08

    SEA

    --T----

  7. DL5810

    Delta Air Lines

    06:30

    BUF

    1.5h

    07:59

    LGA

    --TWTFS
    Search

  8. DL532

    Delta Air Lines

    08:05

    JFK

    4.4h

    10:28

    DEN

    S------

  9. AS620

    Alaska Airlines

    15:45

    DEN

    3.1h

    17:49

    SEA

    S-T----

  10. DL1384

    Delta Air Lines

    12:08

    BUF

    2.0h

    14:10

    ATL

    SMTWTFS
    Search

  11. DL814

    Delta Air Lines

    16:59

    ATL

    5.5h

    19:26

    SEA

    SMTWTFS

  12. UA396

    United Airlines

    18:00

    BUF

    1.9h

    18:54

    ORD

    SMTWTFS
    Search

  13. UA767

    United Airlines

    18:15

    ORD

    2.8h

    20:01

    DEN

    SMTWTFS

  14. F91175

    Frontier Airlines

    07:31

    DEN

    3.0h

    09:28

    SEA

    S----F-

  15. UA396

    United Airlines

    18:00

    BUF

    1.9h

    18:54

    ORD

    SMTWTFS
    Search

  16. UA2289

    United Airlines

    19:45

    ORD

    4.7h

    22:27

    SEA

    SMTWTFS

  17. DL2692

    Delta Air Lines

    18:12

    BUF

    1.2h

    19:23

    DTW

    -MTWTFS
    Search

  18. DL414

    Delta Air Lines

    20:30

    DTW

    4.9h

    22:24

    SEA

    -MTWTFS

  19. F92751

    Frontier Airlines

    18:46

    BUF

    3.5h

    20:15

    DEN

    --T----
    Search

  20. F91175

    Frontier Airlines

    07:31

    DEN

    3.0h

    09:28

    SEA

    S----F-

  21. AA2301

    American Airlines

    18:48

    BUF

    1.8h

    20:34

    CLT

    SMTWTFS
    Search

  22. AA2174

    American Airlines

    20:10

    CLT

    5.5h

    22:41

    SEA

    SMTWTFS
Find more flights and airlines

Buffalo Niagara International Airport to Seattle-Tacoma International Airport Flights Info

Flight distance3,409.35km
Cheapest one-way ticket price$95
Cheapest return ticket price$247

FAQs for Buffalo Niagara International Airport to Seattle-Tacoma International Airport Flights

  • How long is a flight from Buffalo Niagara International Airport to Seattle-Tacoma International Airport?

    It takes around 7 hours 27 minutes to fly from Buffalo Niagara International Airport (BUF) to Seattle-Tacoma International Airport (SEA).

  • How many daily flights are there from Buffalo Niagara International Airport (BUF) to Seattle-Tacoma International Airport (SEA)?

    There are around 1 daily flights from Buffalo Niagara International Airport (BUF) to Seattle-Tacoma International Airport (SEA).

  • When are flight tickets from Buffalo Niagara International Airport (BUF) to Seattle-Tacoma International Airport (SEA) the cheapest?

    Tickets cost around $440 in June, making it the cheapest month to book. Buffalo Niagara International Airport (BUF) to Seattle-Tacoma International Airport (SEA) is a popular route, so don't forget to book your tickets in advance.

  • When are flight tickets from Buffalo Niagara International Airport (BUF) to Seattle-Tacoma International Airport (SEA) most expensive?

    The route from Buffalo Niagara International Airport (BUF) to Seattle-Tacoma International Airport (SEA) is quite popular. Without considering departure times or holidays, tickets cost around $493 in July, the most expensive month to book this route.

  • What time does the latest flight from Buffalo Niagara International Airport to Seattle-Tacoma International Airport depart?

    The latest flight departs from Buffalo Niagara International Airport (BUF) at 18:04 and arrives in Seattle-Tacoma International Airport (SEA) at 22:23.

  • What is the transportation method from the main airport to downtown in Seattle?

    • The distance from Seattle-Tacoma International Airport to downtown is about 17km. It takes about 30 minutes by taxi.

  • Which airline operates the most direct flights from Buffalo Niagara International Airport (BUF) to Seattle-Tacoma International Airport (SEA)?

    United Airlines is a very popular airline operating an average of 131 flights per month.

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