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Seattle-Tacoma International Airport to Buffalo Niagara International Airport flight

Explore the cheapest one-way and round-trip flights from Seattle-Tacoma International Airport to Buffalo Niagara International Airport over the next 90 days, with one-way fares from US$150 and round-trip from US$378. Based on Trip.com's latest 7-day flight data.

      • SEA 06:18
        8h
        1 stop
        BUF 17:18
        Seattle - Buffalo | Mon, Oct 5 | American Airlines
        BUF 17:50
        9h 46m
        1 stop
        SEA 00:36
        Buffalo - Seattle | Sat, Oct 10 | American Airlines
        US$378 US$583
        35% off
        35% off
        US$583 US$378
      • SEA 23:10
        9h 25m
        1 stop
        BUF 11:35
        Seattle - Buffalo | Sun, Nov 8 | Delta Air Lines
        BUF 15:20
        10h 40m
        1 stop
        SEA 23:00
        Buffalo - Seattle | Wed, Nov 11 | Delta Air Lines
        US$393 US$583
        33% off
        33% off
        US$583 US$393
      • SEA 12:34
        7h 10m
        1 stop
        BUF 22:44
        Seattle - Buffalo | Sun, Nov 8 | American Airlines
        BUF 07:57
        9h 23m
        1 stop
        SEA 14:20
        Buffalo - Seattle | Wed, Nov 11 | American Airlines
        US$396 US$583
        32% off
        32% off
        US$583 US$396
      • SEA 23:05
        9h 17m
        1 stop
        BUF 11:22
        Seattle - Buffalo | Mon, Oct 5 | Delta Air Lines
        BUF 15:56
        10h 14m
        1 stop
        SEA 23:10
        Buffalo - Seattle | Sat, Oct 10 | American Airlines
        US$424
        27% off
        US$583 US$424
      • SEA 23:57
        8h 42m
        1 stop
        BUF 11:39
        Seattle - Buffalo | Fri, Oct 2 | American Airlines
        BUF 18:56
        8h 15m
        1 stop
        SEA 00:11
        Buffalo - Seattle | Tue, Oct 6 | American Airlines
        US$442
        24% off
        US$583 US$442
      • SEA 23:15
        7h 53m
        1 stop
        BUF 10:08
        Seattle - Buffalo | Sun, Nov 8 | United Airlines
        BUF 15:20
        10h 40m
        1 stop
        SEA 23:00
        Buffalo - Seattle | Wed, Nov 11 | Delta Air Lines
        US$446
        23% off
        US$583 US$446
      • SEA 23:10
        9h 25m
        1 stop
        BUF 11:35
        Seattle - Buffalo | Thu, Oct 15 | Delta Air Lines
        BUF 19:35
        8h 5m
        1 stop
        SEA 00:40
        Buffalo - Seattle | Wed, Oct 21 |
        US$457
        22% off
        US$583 US$457
      • SEA 23:59
        7h 54m
        1 stop
        BUF 10:53
        Seattle - Buffalo | Wed, Oct 21 | American Airlines
        BUF 08:00
        9h 17m
        1 stop
        SEA 14:17
        Buffalo - Seattle | Fri, Oct 23 | American Airlines
        US$464
        20% off
        US$583 US$464
      • SEA 06:12
        7h 56m
        1 stop
        BUF 17:08
        Seattle - Buffalo | Thu, Oct 15 | American Airlines
        BUF 18:03
        9h 7m
        1 stop
        SEA 00:10
        Buffalo - Seattle | Wed, Oct 21 | American Airlines
        US$466
        20% off
        US$583 US$466
      • SEA 13:00
        17h 25m
        1 stop
        BUF 14:00
        Seattle - Buffalo | Thu, Sep 24 | Normal Airline
        BUF 15:00
        6h
        Nonstop
        SEA 16:00
        Buffalo - Seattle | Sat, Sep 26 | Normal Airline
        More cheap flights
        More cheap flights
      • SEA 07:15
        8h 41m
        1 stop
        BUF 18:56
        Seattle - Buffalo | Wed, Oct 7 | Delta Air Lines
        US$150 US$327
        54% off
        54% off
        US$327 US$150
      • SEA 21:42
        10h 6m
        1 stop
        BUF 10:48
        Seattle - Buffalo | Wed, Oct 7 | American Airlines
        US$161 US$327
        51% off
        51% off
        US$327 US$161
      • SEA 22:59
        9h 17m
        1 stop
        BUF 11:16
        Seattle - Buffalo | Tue, Oct 6 | Delta Air Lines
        US$173 US$327
        47% off
        47% off
        US$327 US$173
      • SEA 22:48
        10h 58m
        1 stop
        BUF 12:46
        Seattle - Buffalo | Tue, Oct 6 | American Airlines
        US$183
        44% off
        US$327 US$183
      • SEA 22:48
        8h 7m
        1 stop
        BUF 09:55
        Seattle - Buffalo | Wed, Oct 7 | United Airlines
        US$198
        39% off
        US$327 US$198
      • SEA 22:35
        9h 41m
        1 stop
        BUF 11:16
        Seattle - Buffalo | Sat, Oct 17 | Delta Air Lines
        US$199
        39% off
        US$327 US$199
      • SEA 22:48
        10h 58m
        1 stop
        BUF 12:46
        Seattle - Buffalo | Sat, Oct 17 | American Airlines
        US$208
        36% off
        US$327 US$208
      • SEA 23:13
        7h 16m
        1 stop
        BUF 09:29
        Seattle - Buffalo | Tue, Oct 6 | United Airlines
        US$221
        32% off
        US$327 US$221
      • SEA 06:00
        10h 3m
        1 stop
        BUF 19:03
        Seattle - Buffalo | Fri, Oct 30 | American Airlines
        US$225
        31% off
        US$327 US$225
      • SEA 23:14
        7h 21m
        1 stop
        BUF 09:35
        Seattle - Buffalo | Sat, Oct 17 | United Airlines
        US$245
        25% off
        US$327 US$245
      • SEA 06:00
        6h 13m
        1 stop
        BUF 15:13
        Seattle - Buffalo | Fri, Oct 30 | Delta Air Lines
        US$255
        22% off
        US$327 US$255
      • SEA 11:03
        8h 47m
        1 stop
        BUF 22:50
        Seattle - Buffalo | Fri, Oct 9 | American Airlines
        US$261
        20% off
        US$327 US$261
      • SEA 13:00
        17h 25m
        1 stop
        BUF 14:00
        Seattle - Buffalo | Thu, Sep 24 | Normal Airline
        More cheap flights
        More cheap flights

Displayed flight fares from Seattle-Tacoma International Airport to Buffalo Niagara International Airport 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 Seattle-Tacoma International Airport to Buffalo Niagara International Airport?

The cheapest airline flying from Seattle-Tacoma International Airport to Buffalo Niagara International Airport is Delta Air Lines (from US$150) among 6 carriers operating this route. Based on Trip.com's latest 7-day flight data.

Delta Air Lines
From US$150
American Airlines
From US$161
United Airlines
From US$198
Alaska Airlines
From US$314
Hahn Air
From US$346
Jetblue Airways
From US$423

Find more flights and airlines

What is the flight schedule from Seattle-Tacoma International Airport to Buffalo Niagara International Airport?

Check on the flight schedule from Seattle to Buffalo to find the flight that matches your travel plan.

Flight info.
Departure
Arrival
Weekly Schedule

  1. UA747

    Seattle-Tacoma International Airport

    23:00

    SEA

    4h 6m

    Nonstop

    05:06

    ORD

    S M T W T - S
    Search

  2. UA265

    O'Hare International Airport

    06:29

    ORD

    1h 39m

    Nonstop

    09:08

    BUF

    S M T W T F -

  3. UA2693

    Seattle-Tacoma International Airport

    23:14

    SEA

    5h 3m

    Nonstop

    07:17

    IAD

    - - - W T F -
    Search

  4. UA4476

    Dulles International Airport

    08:20

    IAD

    1h 20m

    Nonstop

    09:40

    BUF

    S - - W T F S

  5. AA2870

    Seattle-Tacoma International Airport

    12:40

    SEA

    5h 24m

    Nonstop

    21:04

    PHL

    S - - W T - S
    Search

  6. AA5939

    Philadelphia International Airport

    22:01

    PHL

    1h 39m

    Nonstop

    23:40

    BUF

    S - - W T - S

  7. UA2017

    Seattle-Tacoma International Airport

    22:58

    SEA

    5h 12m

    Nonstop

    07:10

    EWR

    S M T W T F S
    Search

  8. UA4417

    Newark Liberty International Airport

    08:30

    EWR

    1h 25m

    Nonstop

    09:55

    BUF

    - - - W T - -

  9. DL652

    Seattle-Tacoma International Airport

    23:35

    SEA

    4h 50m

    Nonstop

    07:25

    ATL

    S M T W T F S
    Search

  10. DL1384

    Hartsfield–Jackson Atlanta International Airport

    09:14

    ATL

    2h 1m

    Nonstop

    11:15

    BUF

    S M T W T F S

  11. DL429

    Seattle-Tacoma International Airport

    07:15

    SEA

    5h 35m

    Nonstop

    15:50

    JFK

    S M T W T F S
    Search

  12. DL5250

    John F. Kennedy International Airport

    17:25

    JFK

    1h 50m

    Nonstop

    19:15

    BUF

    S M T W T F S

  13. AA2379

    Seattle-Tacoma International Airport

    23:34

    SEA

    4h 1m

    Nonstop

    05:35

    ORD

    S M T W T F S
    Search

  14. AA4751

    O'Hare International Airport

    08:46

    ORD

    1h 53m

    Nonstop

    11:39

    BUF

    S M T W T F S

  15. AA1833

    Seattle-Tacoma International Airport

    12:56

    SEA

    5h 4m

    Nonstop

    21:00

    CLT

    - - - - - - S
    Search

  16. AA703

    Charlotte Douglas International Airport

    20:55

    CLT

    1h 45m

    Nonstop

    22:40

    BUF

    S M T W T F S

  17. DL1706

    Seattle-Tacoma International Airport

    11:45

    SEA

    4h 25m

    Nonstop

    19:10

    DTW

    S M T W T F S
    Search

  18. DL978

    Detroit Metropolitan Wayne County Airport

    22:50

    DTW

    1h 12m

    Nonstop

    00:02

    BUF

    S M T W T F S

  19. DL567

    Seattle-Tacoma International Airport

    21:20

    SEA

    4h 48m

    Nonstop

    05:08

    ATL

    S M T W T F S
    Search

  20. DL1384

    Hartsfield–Jackson Atlanta International Airport

    09:14

    ATL

    2h 1m

    Nonstop

    11:15

    BUF

    S M T W T F S
Find more flights and airlines

About Seattle-Tacoma International Airport and Buffalo Niagara International Airport

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

Flight distance3,409.35 km
Cheapest one-way ticket priceUS$150
Cheapest return ticket priceUS$378

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

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

    There are around 1 daily flights from Seattle-Tacoma International Airport (SEA) to Buffalo Niagara International Airport (BUF).
  • The route from Seattle-Tacoma International Airport (SEA) to Buffalo Niagara International Airport (BUF) is quite popular. Without considering departure times or holidays, tickets cost around US$483 in May, the most expensive month to book this route.
  • The earliest flight departs from Seattle-Tacoma International Airport at 07:06 and arrives in Buffalo Niagara International Airport at 16:38.
  • United Airlines is a very popular airline operating an average of 13 flights per month.
  • One-way flights from Seattle-Tacoma International Airport to Buffalo Niagara International Airport currently start from US$150, and round-trip fares start from US$378. The current lowest fare is a Delta Air Lines flight departing on Wed, Oct 7; 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 Seattle-Tacoma International Airport to Buffalo Niagara International Airport is US$312. Prices may vary depending on the departure date, airline, and availability.
  • Enter Seattle-Tacoma International Airport and Buffalo Niagara International 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 the estimated lowest prices found in the last 24 hours and include all taxes and fees.

Book with no extra fees

Prices displayed on this page are all-inclusive (incl. taxes, fuel surcharges, Civil Aviation Development Fund, etc.), and all fees are clearly shown before you pay. Charges for checked baggage, onboard meals, Wi‑Fi, and other optional services are also included where applicable in the flight cards.

Real-time pricing updates

Prices, availability, and travel details on this page have been updated within the last 24 hours, and for many routes are refreshed in real time. The more popular the route, the more accurate and up-to-date the data.

Change & Cancellation Policy

Trip.com shows the change and cancellation rules for each ticket during the booking process, including all related fees and conditions. Please refer to the following scenarios:
Voluntary cancellation/change:
To request a change or cancellation, go to the flight bookings page, select the option to change or cancel your booking, choose the relevant passengers and flight segment, and submit your request. Please note that additional charges may apply based on the airline’s fare rules.
Cancellation/change due to a flight schedule change:
If your flight has been rescheduled and you would like to change or cancel your ticket, you can submit an involuntary cancellation request. For full details of change and cancellation policies, please refer to the customer support pages.