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Buffalo Niagara International Airport to Seattle Tacoma Intl. Airport flight

Explore the cheapest one-way and round-trip flights from Buffalo Niagara International Airport to Seattle Tacoma Intl. Airport over the next 90 days, with one-way fares from AU$238 and round-trip from AU$436. Based on Trip.com's latest 7-day flight data.

    • BUF 5:20 PM
      9h 32m
      1 stop
      SEA 11:52 PM
      Buffalo - Seattle | Fri, Oct 30 | Delta Air Lines
      SEA 11:10 PM
      6h 16m
      1 stop
      BUF 8:26 AM
      Seattle - Buffalo | Thu, Nov 5 | Delta Air Lines
      AU$436 AU$627
      30% off
      30% off
      AU$627 AU$436
    • BUF 11:38 AM
      9h 28m
      1 stop
      SEA 6:06 PM
      Buffalo - Seattle | Fri, Oct 30 | American Airlines
      SEA 5:10 AM
      7h 40m
      1 stop
      BUF 3:50 PM
      Seattle - Buffalo | Thu, Nov 5 | American Airlines
      AU$450 AU$627
      28% off
      28% off
      AU$627 AU$450
    • BUF 3:53 PM
      10h 11m
      1 stop
      SEA 11:04 PM
      Buffalo - Seattle | Sun, Nov 8 | Delta Air Lines
      SEA 10:52 PM
      8h 43m
      1 stop
      BUF 10:35 AM
      Seattle - Buffalo | Thu, Nov 12 | Delta Air Lines
      AU$456 AU$627
      27% off
      27% off
      AU$627 AU$456
    • BUF 7:57 AM
      10h 47m
      1 stop
      SEA 3:44 PM
      Buffalo - Seattle | Tue, Nov 10 | American Airlines
      SEA 12:34 PM
      7h 10m
      1 stop
      BUF 10:44 PM
      Seattle - Buffalo | Tue, Nov 17 | American Airlines
      AU$465
      26% off
      AU$627 AU$465
    • BUF 6:00 AM
      9h 31m
      1 stop
      SEA 12:31 PM
      Buffalo - Seattle | Fri, Nov 27 | Delta Air Lines
      SEA 11:15 PM
      6h 19m
      1 stop
      BUF 8:34 AM
      Seattle - Buffalo | Tue, Dec 1 | Delta Air Lines
      AU$472
      25% off
      AU$627 AU$472
    • BUF 6:35 AM
      7h 34m
      1 stop
      SEA 11:09 AM
      Buffalo - Seattle | Fri, Nov 20 | Delta Air Lines
      SEA 11:15 PM
      9h 3m
      1 stop
      BUF 11:18 AM
      Seattle - Buffalo | Fri, Nov 27 | Delta Air Lines
      AU$472
      25% off
      AU$627 AU$472
    • BUF 5:20 PM
      9h 32m
      1 stop
      SEA 11:52 PM
      Buffalo - Seattle | Wed, Oct 28 | Delta Air Lines
      SEA 11:45 AM
      7h 53m
      1 stop
      BUF 10:38 PM
      Seattle - Buffalo | Sun, Nov 1 | Delta Air Lines
      AU$499
      20% off
      AU$627 AU$499
    • BUF 7:00 AM
      11h 21m
      1 stop
      SEA 3:21 PM
      Buffalo - Seattle | Fri, Nov 6 | Delta Air Lines
      SEA 11:10 PM
      6h 11m
      1 stop
      BUF 8:21 AM
      Seattle - Buffalo | Sun, Nov 8 | Delta Air Lines
      AU$499
      20% off
      AU$627 AU$499
    • BUF 11:32 AM
      9h 39m
      1 stop
      SEA 6:11 PM
      Buffalo - Seattle | Sat, Nov 7 | American Airlines
      SEA 5:10 AM
      7h 40m
      1 stop
      BUF 3:50 PM
      Seattle - Buffalo | Thu, Nov 12 | American Airlines
      AU$509
      19% off
      AU$627 AU$509
    • BUF 1:00 PM
      17h 25m
      1 stop
      SEA 2:00 PM
      Buffalo - Seattle | Wed, Oct 28 | Normal Airline
      SEA 3:00 PM
      6h
      Nonstop
      BUF 4:00 PM
      Seattle - Buffalo | Fri, Oct 30 | Normal Airline
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    • Cheapest
      BUF 6:46 PM
      8h 49m
      1 stop
      SEA 12:35 AM
      Buffalo - Seattle | Tue, Nov 3 | American Airlines
      AU$238 AU$555
      56% off
      56% off
      AU$555 AU$238
    • BUF 7:00 AM
      10h 51m
      1 stop
      SEA 2:51 PM
      Buffalo - Seattle | Mon, Nov 2 | American Airlines
      AU$349 AU$555
      37% off
      37% off
      AU$555 AU$349
    • BUF 7:55 AM
      10h 54m
      1 stop
      SEA 3:49 PM
      Buffalo - Seattle | Wed, Nov 25 | American Airlines
      AU$351 AU$555
      37% off
      37% off
      AU$555 AU$351
    • BUF 7:55 AM
      10h 49m
      1 stop
      SEA 3:44 PM
      Buffalo - Seattle | Mon, Nov 9 | American Airlines
      AU$351
      37% off
      AU$555 AU$351
    • BUF 3:59 PM
      9h 4m
      1 stop
      SEA 10:03 PM
      Buffalo - Seattle | Mon, Nov 9 | Delta Air Lines
      AU$351
      37% off
      AU$555 AU$351
    • BUF 5:58 PM
      8h 19m
      1 stop
      SEA 11:17 PM
      Buffalo - Seattle | Wed, Nov 25 | United Airlines
      AU$423
      24% off
      AU$555 AU$423
    • BUF 6:30 AM
      8h 49m
      1 stop
      SEA 12:19 PM
      Buffalo - Seattle | Mon, Nov 9 | United Airlines
      AU$424
      24% off
      AU$555 AU$424
    • BUF 11:24 AM
      10h 21m
      1 stop
      SEA 6:45 PM
      Buffalo - Seattle | Wed, Nov 25 | Alaska Airlines
      AU$429
      23% off
      AU$555 AU$429
    • BUF 8:00 AM
      10h 43m
      1 stop
      SEA 3:43 PM
      Buffalo - Seattle | Sun, Nov 1 | American Airlines
      AU$432
      22% off
      AU$555 AU$432
    • BUF 1:00 PM
      17h 25m
      1 stop
      SEA 2:00 PM
      Buffalo - Seattle | Wed, Oct 28 | Normal Airline
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    • BUF 6:46 PM
      8h 49m
      1 stop
      SEA 12:35 AM
      Buffalo - Seattle | Mon, Nov 2 | American Airlines
      AU$238 AU$586
      59% off
      59% off
      AU$586 AU$238
    • BUF 6:15 AM
      7h 25m
      1 stop
      SEA 10:40 AM
      Buffalo - Seattle | Sun, Nov 1 | Delta Air Lines
      AU$492 AU$586
      16% off
      16% off
      AU$586 AU$492
    • BUF 1:00 PM
      17h 25m
      1 stop
      SEA 2:00 PM
      Buffalo - Seattle | Wed, Oct 28 | Normal Airline
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    • BUF 6:46 PM
      8h 49m
      1 stop
      SEA 12:35 AM
      Buffalo - Seattle | Mon, Nov 2 | American Airlines
      AU$238 AU$586
      59% off
      59% off
      AU$586 AU$238
    • BUF 6:15 AM
      7h 25m
      1 stop
      SEA 10:40 AM
      Buffalo - Seattle | Sun, Nov 1 | Delta Air Lines
      AU$492 AU$586
      16% off
      16% off
      AU$586 AU$492
    • BUF 1:00 PM
      17h 25m
      1 stop
      SEA 2:00 PM
      Buffalo - Seattle | Wed, Oct 28 | Normal Airline
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    • BUF 5:35 PM
      7h 57m
      1 stop
      SEA 10:32 PM
      Buffalo - Seattle | Fri, Jan 1 | United Airlines
      AU$628 AU$748
      16% off
      16% off
      AU$748 AU$628
    • BUF 5:58 PM
      8h 19m
      1 stop
      SEA 11:17 PM
      Buffalo - Seattle | Wed, Nov 25 | United Airlines
      AU$423 AU$555
      24% off
      24% off
      AU$555 AU$423
    • BUF 5:18 AM
      8h 37m
      1 stop
      SEA 10:55 AM
      Buffalo - Seattle | Mon, Nov 9 | Alaska Airlines
      AU$458 AU$555
      17% off
      17% off
      AU$555 AU$458
    • BUF 6:46 PM
      8h 49m
      1 stop
      SEA 12:35 AM
      Buffalo - Seattle | Tue, Nov 3 | American Airlines
      AU$238
      56% off
      AU$555 AU$238
    • BUF 6:30 AM
      8h 49m
      1 stop
      SEA 12:19 PM
      Buffalo - Seattle | Mon, Nov 9 | United Airlines
      AU$424
      24% off
      AU$555 AU$424
    • BUF 3:59 PM
      9h 4m
      1 stop
      SEA 10:03 PM
      Buffalo - Seattle | Mon, Nov 9 | Delta Air Lines
      AU$351
      37% off
      AU$555 AU$351
    • BUF 11:24 AM
      10h 21m
      1 stop
      SEA 6:45 PM
      Buffalo - Seattle | Wed, Nov 25 | Alaska Airlines
      AU$429
      23% off
      AU$555 AU$429
    • BUF 8:00 AM
      10h 43m
      1 stop
      SEA 3:43 PM
      Buffalo - Seattle | Sun, Nov 1 | American Airlines
      AU$432
      22% off
      AU$555 AU$432
    • BUF 7:55 AM
      10h 49m
      1 stop
      SEA 3:44 PM
      Buffalo - Seattle | Mon, Nov 9 | American Airlines
      AU$351
      37% off
      AU$555 AU$351
    • BUF 1:00 PM
      17h 25m
      1 stop
      SEA 2:00 PM
      Buffalo - Seattle | Wed, Oct 28 | Normal Airline
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Displayed flight fares from Buffalo to Seattle are based on average prices across airlines for the next 3 months, according to the latest Trip.com database.

Which airline offers the cheapest flights from Buffalo Niagara International Airport to Seattle Tacoma Intl. Airport?

The cheapest airline flying from Buffalo Niagara International Airport to Seattle Tacoma Intl. Airport is American Airlines (from AU$238) among 5 carriers operating this route. Based on Trip.com's latest 7-day flight data.

American Airlines
From AU$238
Delta Air Lines
From AU$351
United Airlines
From AU$423
Alaska Airlines
From AU$429
Hahn Air
From AU$511

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What is the flight schedule from Buffalo Niagara International Airport to Seattle Tacoma Intl. 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. UA4381

    Buffalo Niagara International Airport

    1:47 PM

    BUF

    2h 8m

    Nonstop

    2:55 PM

    ORD

    S M T W T F S
    Search

  2. UA1801

    O'Hare Intl. Airport

    4:15 PM

    ORD

    4h 44m

    Nonstop

    6:59 PM

    SEA

    S M T W T F S

  3. UA2747

    Buffalo Niagara International Airport

    5:50 PM

    BUF

    1h 48m

    Nonstop

    6:38 PM

    ORD

    S M T W T - S
    Search

  4. UA2263

    O'Hare Intl. Airport

    8:20 PM

    ORD

    4h 47m

    Nonstop

    11:07 PM

    SEA

    S M T W T F S

  5. UA3627

    Buffalo Niagara International Airport

    5:49 PM

    BUF

    2h 13m

    Nonstop

    7:02 PM

    ORD

    - - - - - F -
    Search

  6. UA2263

    O'Hare Intl. Airport

    8:20 PM

    ORD

    4h 47m

    Nonstop

    11:07 PM

    SEA

    S M T W T F S

  7. AS6584

    Buffalo Niagara International Airport

    10:59 AM

    BUF

    1h 27m

    Nonstop

    12:26 PM

    PHL

    S M T W T F S
    Search

  8. AS443

    Philadelphia International Airport

    5:49 PM

    PHL

    6h 10m

    Nonstop

    8:59 PM

    SEA

    S M T W T F S

  9. AS6276

    Buffalo Niagara International Airport

    5:22 AM

    BUF

    1h 26m

    Nonstop

    6:48 AM

    DCA

    - M T W T F -
    Search

  10. AS001

    Ronald Reagan Washington National Airport

    8:00 AM

    DCA

    5h 58m

    Nonstop

    10:58 AM

    SEA

    S M T W T F S

  11. DL3841

    Buffalo Niagara International Airport

    9:06 AM

    BUF

    1h 17m

    Nonstop

    10:23 AM

    DTW

    S M T W T - S
    Search

  12. DL728

    Detroit Metropolitan Wayne County Airport

    12:15 PM

    DTW

    5h 8m

    Nonstop

    2:23 PM

    SEA

    S M T W T F S

  13. AS6860

    Buffalo Niagara International Airport

    12:18 PM

    BUF

    1h 41m

    Nonstop

    1:59 PM

    DCA

    S - - - - - S
    Search

  14. AS001

    Ronald Reagan Washington National Airport

    8:00 AM

    DCA

    5h 58m

    Nonstop

    10:58 AM

    SEA

    S M T W T F S

  15. AA2202

    Buffalo Niagara International Airport

    6:46 PM

    BUF

    2h 14m

    Nonstop

    8:00 PM

    ORD

    S - - - - - S
    Search

  16. AA2392

    O'Hare Intl. Airport

    9:40 PM

    ORD

    4h 54m

    Nonstop

    12:34 AM

    SEA

    S M T W T - S

  17. UA543

    Buffalo Niagara International Airport

    6:30 AM

    BUF

    2h 3m

    Nonstop

    7:33 AM

    ORD

    S M T W T F S
    Search

  18. UA2099

    O'Hare Intl. Airport

    9:10 AM

    ORD

    4h 58m

    Nonstop

    12:08 PM

    SEA

    S M T W T F S

  19. DL2266

    Buffalo Niagara International Airport

    5:24 PM

    BUF

    2h 25m

    Nonstop

    7:49 PM

    ATL

    S M T W T F S
    Search

  20. DL714

    Hartsfield–Jackson Atlanta International Airport

    6:10 PM

    ATL

    5h 36m

    Nonstop

    8:46 PM

    SEA

    - M T W T F -
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About Buffalo Niagara International Airport and Seattle Tacoma Intl. Airport

Learn about Buffalo Niagara International Airport (BUF) and Seattle Tacoma Intl. Airport (SEA) — including location, terminals, transportation, and travel tips.

Flight distance 3,409.35 km
Cheapest one-way ticket price AU$238
Cheapest return ticket price AU$436

FAQs for Buffalo Niagara International Airport to Seattle Tacoma Intl. Airport Flights

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

    There are around 1 daily flights from Buffalo Niagara International Airport (BUF) to Seattle Tacoma Intl. Airport (SEA).
  • The route from Buffalo Niagara International Airport (BUF) to Seattle Tacoma Intl. Airport (SEA) is quite popular. Without considering departure times or holidays, tickets cost around AU$739 in December, the most expensive month to book this route.
  • The latest flight departs from Buffalo Niagara International Airport (BUF) at 18:03 and arrives in Seattle Tacoma Intl. Airport (SEA) at 22:22.
    • The distance from Seattle-Tacoma International Airport to downtown is about 17 km. It takes about 30 minutes by taxi.
  • United Airlines is a very popular airline operating an average of 1 flights per month.
  • One-way flights from Buffalo Niagara International Airport to Seattle Tacoma Intl. Airport currently start from AU$238, and round-trip fares start from AU$436. The current lowest fare is a American Airlines flight departing on Tue, Nov 3; prices may vary depending on availability.
  • Based on Trip.com flight data for departures within the next 30 days with at most one stop, the average one-way price from Buffalo Niagara International Airport to Seattle Tacoma Intl. Airport is AU$445. Prices may vary depending on the departure date, airline, and availability.
  • Enter Buffalo Niagara International Airport and Seattle Tacoma Intl. Airport, select your departure date and number of passengers, then compare flights by price, flight duration, and baggage allowance. Once you've chosen a fare, review the change and refund rules, fill in passenger details, and pay to receive your booking confirmation.

Popular Destinations

Note: Prices shown on this page are estimated lowest price and include all taxes and fees found in the last 24 hours.

Book with no extra fees

Prices displayed in this page are all-inclusive prices (incl. taxes, fuel surcharge, civil aviation development fund, etc) with all fees confirmed before payment. Fees for luggage, meals, WLAN, or other additional services are also included as shown in the flight cards.

Real-time pricing updates

Prices, availability, and travel information on this page were updated within last 24 hours—even in real-time. The more popular the route, the more precise the data.

Change & Cancellation Policy

Trip.com displays flight cancellation and change policies for each flight ticket during the booking process, including fees and applicable conditions. Please check the following scenarios:
Voluntary cancellation/change:
To submit a change or cancellation request, go to the flight bookings page, select the option to change or cancel your booking, choose the relevant passengers and segment, and submit a request. Please note that additional charges may apply according to the airline ticket policy.
Cancellation/change due to a flight schedule change:
If the flight has been rescheduled and you would like to change or cancel your ticket, you can submit an involuntary cancellation request. For more details about change and cancellation policies, please check the customer support pages.