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Buffalo Niagara International Airport to Seattle Tacoma Intl. Airport flight
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Buffalo Niagara International Airport to Seattle Tacoma Intl. Airport Flights Info

Cheapest one-way
€220
American Airlines American Airlines 10h 43m · 1 stop Thu, Dec 31
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Cheapest round-trip
€301
Delta Air Lines Delta Air Lines 9h 31m · 2 stops Mon, Nov 30 - Fri, Dec 4
Select flight
Recommended airlines
American Airlines American AirlinesCheapest· From €220 Delta Air Lines Delta Air LinesMost booked

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 €220 and round-trip from €301. Based on Trip.com's latest 7-day flight data.

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    • BUF 6:00 AM
      9h 31m
      1 stop
      SEA 12:31 PM
      Buffalo - Seattle | Mon, Nov 30 | Delta Air Lines
      SEA 11:15 PM
      6h 19m
      1 stop
      BUF 8:34 AM
      Seattle - Buffalo | Fri, Dec 4 | Delta Air Lines
      €301 €435
      31% off
      31% off
      €435 €301
    • BUF 6:35 AM
      7h 34m
      1 stop
      SEA 11:09 AM
      Buffalo - Seattle | Mon, Nov 23 | Delta Air Lines
      SEA 11:15 PM
      9h 3m
      1 stop
      BUF 11:18 AM
      Seattle - Buffalo | Mon, Nov 30 | Delta Air Lines
      €301 €435
      31% off
      31% off
      €435 €301
    • BUF 11:32 AM
      9h 51m
      1 stop
      SEA 6:23 PM
      Buffalo - Seattle | Tue, Dec 15 | American Airlines
      SEA 10:53 AM
      8h 2m
      1 stop
      BUF 9:55 PM
      Seattle - Buffalo | Sat, Dec 19 | American Airlines
      €312 €435
      28% off
      28% off
      €435 €312
    • BUF 6:50 PM
      8h 57m
      1 stop
      SEA 12:47 AM
      Buffalo - Seattle | Fri, Dec 11 | American Airlines
      SEA 6:20 AM
      8h 44m
      1 stop
      BUF 6:04 PM
      Seattle - Buffalo | Wed, Dec 16 | American Airlines
      €342
      21% off
      €435 €342
    • BUF 6:00 AM
      9h 41m
      1 stop
      SEA 12:41 PM
      Buffalo - Seattle | Tue, Dec 15 | Delta Air Lines
      SEA 11:59 PM
      8h 6m
      1 stop
      BUF 11:05 AM
      Seattle - Buffalo | Sat, Dec 19 | Delta Air Lines
      €342
      21% off
      €435 €342
    • BUF 9:15 AM
      8h 48m
      1 stop
      SEA 3:03 PM
      Buffalo - Seattle | Fri, Dec 11 | Delta Air Lines
      SEA 1:36 PM
      6h 12m
      1 stop
      BUF 10:48 PM
      Seattle - Buffalo | Wed, Dec 16 | Delta Air Lines
      €347
      20% off
      €435 €347
    • BUF 5:16 PM
      9h 41m
      1 stop
      SEA 11:57 PM
      Buffalo - Seattle | Wed, Nov 18 | Delta Air Lines
      SEA 11:40 PM
      8h 26m
      1 stop
      BUF 11:06 AM
      Seattle - Buffalo | Fri, Nov 20 | Delta Air Lines
      €351
      19% off
      €435 €351
    • BUF 9:15 AM
      8h 48m
      1 stop
      SEA 3:03 PM
      Buffalo - Seattle | Mon, Dec 7 | Delta Air Lines
      SEA 11:59 PM
      8h 6m
      1 stop
      BUF 11:05 AM
      Seattle - Buffalo | Tue, Dec 15 | Delta Air Lines
      €352
      19% off
      €435 €352
    • BUF 6:00 AM
      11h 30m
      1 stop
      SEA 2:30 PM
      Buffalo - Seattle | Sat, Nov 21 | Delta Air Lines
      SEA 1:35 PM
      7h 23m
      1 stop
      BUF 11:58 PM
      Seattle - Buffalo | Sun, Nov 22 | Delta Air Lines
      €353
      19% off
      €435 €353
    • BUF 1:00 PM
      17h 25m
      1 stop
      SEA 2:00 PM
      Buffalo - Seattle | Tue, Nov 17 | Normal Airline
      SEA 3:00 PM
      6h
      Nonstop
      BUF 4:00 PM
      Seattle - Buffalo | Thu, Nov 19 | Normal Airline
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    • Cheapest
      BUF 8:00 AM
      10h 43m
      1 stop
      SEA 3:43 PM
      Buffalo - Seattle | Thu, Dec 31 | American Airlines
      €220 €383
      43% off
      43% off
      €383 €220
    • BUF 6:25 AM
      9h 46m
      1 stop
      SEA 1:11 PM
      Buffalo - Seattle | Sat, Jan 9 | American Airlines
      €221 €383
      42% off
      42% off
      €383 €221
    • BUF 7:55 AM
      10h 54m
      1 stop
      SEA 3:49 PM
      Buffalo - Seattle | Wed, Dec 2 | American Airlines
      €223 €383
      42% off
      42% off
      €383 €223
    • BUF 7:55 AM
      10h 49m
      1 stop
      SEA 3:44 PM
      Buffalo - Seattle | Mon, Nov 16 | American Airlines
      €224
      42% off
      €383 €224
    • BUF 3:59 PM
      9h 4m
      1 stop
      SEA 10:03 PM
      Buffalo - Seattle | Mon, Nov 16 | Delta Air Lines
      €224
      42% off
      €383 €224
    • BUF 5:58 PM
      8h 19m
      1 stop
      SEA 11:17 PM
      Buffalo - Seattle | Wed, Dec 2 | United Airlines
      €269
      30% off
      €383 €269
    • BUF 6:30 AM
      8h 49m
      1 stop
      SEA 12:19 PM
      Buffalo - Seattle | Mon, Nov 16 | United Airlines
      €270
      30% off
      €383 €270
    • BUF 11:24 AM
      10h 21m
      1 stop
      SEA 6:45 PM
      Buffalo - Seattle | Wed, Dec 2 | Alaska Airlines
      €274
      28% off
      €383 €274
    • BUF 5:18 AM
      8h 37m
      1 stop
      SEA 10:55 AM
      Buffalo - Seattle | Mon, Nov 16 | Alaska Airlines
      €292
      24% off
      €383 €292
    • BUF 1:00 PM
      17h 25m
      1 stop
      SEA 2:00 PM
      Buffalo - Seattle | Tue, Nov 17 | Normal Airline
      Find more flights
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    • BUF 5:35 PM
      7h 57m
      1 stop
      SEA 10:32 PM
      Buffalo - Seattle | Fri, Jan 1 | United Airlines
      €400 €488
      18% off
      18% off
      €488 €400
    • BUF 5:58 PM
      8h 19m
      1 stop
      SEA 11:17 PM
      Buffalo - Seattle | Wed, Dec 2 | United Airlines
      €269 €383
      30% off
      30% off
      €383 €269
    • BUF 5:18 AM
      8h 37m
      1 stop
      SEA 10:55 AM
      Buffalo - Seattle | Mon, Nov 16 | Alaska Airlines
      €292 €383
      24% off
      24% off
      €383 €292
    • BUF 6:30 AM
      8h 49m
      1 stop
      SEA 12:19 PM
      Buffalo - Seattle | Mon, Nov 16 | United Airlines
      €270
      30% off
      €383 €270
    • BUF 7:14 AM
      9h 1m
      1 stop
      SEA 1:15 PM
      Buffalo - Seattle | Wed, Nov 18 | American Airlines
      €312
      19% off
      €383 €312
    • BUF 3:59 PM
      9h 4m
      1 stop
      SEA 10:03 PM
      Buffalo - Seattle | Mon, Nov 16 | Delta Air Lines
      €224
      42% off
      €383 €224
    • BUF 6:25 AM
      9h 46m
      1 stop
      SEA 1:11 PM
      Buffalo - Seattle | Sat, Jan 9 | American Airlines
      €221
      42% off
      €383 €221
    • BUF 11:24 AM
      10h 21m
      1 stop
      SEA 6:45 PM
      Buffalo - Seattle | Wed, Dec 2 | Alaska Airlines
      €274
      28% off
      €383 €274
    • BUF 8:00 AM
      10h 43m
      1 stop
      SEA 3:43 PM
      Buffalo - Seattle | Thu, Dec 31 | American Airlines
      €220
      43% off
      €383 €220
    • BUF 1:00 PM
      17h 25m
      1 stop
      SEA 2:00 PM
      Buffalo - Seattle | Tue, Nov 17 | Normal Airline
      Find more flights
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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 €220) among 1 carriers operating this route. Based on Trip.com's latest 7-day flight data.
Frontier Airlines logo Frontier Airlines American Airlines logo American Airlines Delta Air Lines logo Delta Air Lines United Airlines logo United Airlines Alaska Airlines logo Alaska Airlines
Delta Air Lines logo Delta Air Lines

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. UA2747

    Buffalo Niagara International Airport

    5:50 PM

    BUF

    1h 48m

    Nonstop

    6:38 PM

    ORD

    S M T W T - S
    Search

  2. UA2263

    O'Hare Intl. Airport

    8:20 PM

    ORD

    4h 47m

    Nonstop

    11:07 PM

    SEA

    S M T W T F S

  3. UA4291

    Buffalo Niagara International Airport

    2:55 PM

    BUF

    1h 28m

    Nonstop

    4:23 PM

    IAD

    S - T W T F -
    Search

  4. UA1128

    Dulles International Airport

    5:50 PM

    IAD

    6h 7m

    Nonstop

    8:57 PM

    SEA

    S M T W T F S

  5. DL4636

    Buffalo Niagara International Airport

    12:50 PM

    BUF

    1h 19m

    Nonstop

    2:09 PM

    DTW

    S M T W T F S
    Search

  6. DL944

    Detroit Metropolitan Wayne County Airport

    4:35 PM

    DTW

    5h 3m

    Nonstop

    6:38 PM

    SEA

    S M T W T F S

  7. AA2405

    Buffalo Niagara International Airport

    7:14 AM

    BUF

    3h 41m

    Nonstop

    9:55 AM

    DFW

    S M T W T F S
    Search

  8. AA717

    Dallas Fort Worth International Airport

    10:44 AM

    DFW

    4h 31m

    Nonstop

    1:15 PM

    SEA

    S M T W T - S

  9. AA1203

    Buffalo Niagara International Airport

    11:29 AM

    BUF

    2h 2m

    Nonstop

    1:31 PM

    CLT

    S M T W T F S
    Search

  10. AA3252

    Charlotte Douglas International Airport

    3:52 PM

    CLT

    6h

    Nonstop

    6:52 PM

    SEA

    S M T W - F S

  11. AS6184

    Buffalo Niagara International Airport

    11:24 AM

    BUF

    2h 10m

    Nonstop

    12:34 PM

    ORD

    S M T W T F S
    Search

  12. AS407

    O'Hare Intl. Airport

    3:59 PM

    ORD

    4h 49m

    Nonstop

    6:48 PM

    SEA

    S M T W T F S

  13. AS6860

    Buffalo Niagara International Airport

    6:00 AM

    BUF

    1h 28m

    Nonstop

    7:28 AM

    DCA

    S M T W T F S
    Search

  14. AS003

    Ronald Reagan Washington National Airport

    5:00 PM

    DCA

    6h 8m

    Nonstop

    8:08 PM

    SEA

    S M T W T F S
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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 €471 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 €220, and round-trip fares start from €301. The current lowest fare is a American Airlines flight departing on Thu, Dec 31; 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 €328. 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.

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

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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.