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Flights from Seattle to Buffalo

Search cheap flights from Seattle to Buffalo in the next 3 months. Based on Trip.com's latest 7-day data, one-way fares start at US$155, and round-trip tickets start at US$443.

      • SEA 23:35
        8h 38m
        1 stop
        BUF 11:13
        Seattle - Buffalo | Tue, May 19 | Delta Air Lines
        BUF 14:47
        11h 11m
        1 stop
        SEA 22:58
        Buffalo - Seattle | Fri, May 22 | American Airlines
        US$443 US$806
        45% off
        45% off
        US$806 US$443
      • SEA 22:47
        8h 31m
        1 stop
        BUF 10:18
        Seattle - Buffalo | Tue, May 19 | American Airlines
        BUF 14:47
        11h 11m
        1 stop
        SEA 22:58
        Buffalo - Seattle | Fri, May 22 | American Airlines
        US$491 US$806
        39% off
        39% off
        US$806 US$491
      • SEA 11:30
        8h 2m
        1 stop
        BUF 22:32
        Seattle - Buffalo | Tue, May 19 | Jetblue Airways
        BUF 14:47
        11h 11m
        1 stop
        SEA 22:58
        Buffalo - Seattle | Fri, May 22 | American Airlines
        US$494 US$806
        39% off
        39% off
        US$806 US$494
      • SEA 23:53
        6h 48m
        1 stop
        BUF 09:41
        Seattle - Buffalo | Tue, May 19 | United Airlines
        BUF 14:47
        11h 11m
        1 stop
        SEA 22:58
        Buffalo - Seattle | Fri, May 22 | American Airlines
        US$495
        39% off
        US$806 US$495
      • SEA 21:35
        10h 38m
        1 stop
        BUF 11:13
        Seattle - Buffalo | Sat, May 16 | Delta Air Lines
        BUF 18:00
        9h 36m
        1 stop
        SEA 00:36
        Buffalo - Seattle | Mon, May 18 | American Airlines
        US$498
        38% off
        US$806 US$498
      • SEA 22:35
        8h 37m
        1 stop
        BUF 10:12
        Seattle - Buffalo | Fri, May 22 | American Airlines
        BUF 05:25
        9h 21m
        1 stop
        SEA 11:46
        Buffalo - Seattle | Mon, May 25 | American Airlines
        US$532
        34% off
        US$806 US$532
      • SEA 11:16
        7h 20m
        1 stop
        BUF 21:36
        Seattle - Buffalo | Sat, May 16 | American Airlines
        BUF 18:00
        9h 36m
        1 stop
        SEA 00:36
        Buffalo - Seattle | Mon, May 18 | American Airlines
        US$548
        32% off
        US$806 US$548
      • SEA 22:41
        8h 12m
        1 stop
        BUF 09:53
        Seattle - Buffalo | Sat, May 16 | United Airlines
        BUF 18:00
        9h 36m
        1 stop
        SEA 00:36
        Buffalo - Seattle | Mon, May 18 | American Airlines
        US$550
        32% off
        US$806 US$550
      • SEA 22:40
        8h 40m
        1 stop
        BUF 10:20
        Seattle - Buffalo | Thu, Jun 25 | United Airlines
        BUF 17:52
        7h 44m
        1 stop
        SEA 22:36
        Buffalo - Seattle | Wed, Jul 1 | United Airlines
        US$556
        31% off
        US$806 US$556
      • SEA 22:35
        8h 9m
        1 stop
        BUF 09:44
        Seattle - Buffalo | Sat, May 23 | Delta Air Lines
        BUF 16:46
        11h 13m
        1 stop
        SEA 00:59
        Buffalo - Seattle | Mon, May 25 | American Airlines
        US$564
        30% off
        US$806 US$564
      • SEA 13:00
        17h 25m
        1 stop
        BUF 14:00
        Seattle - Buffalo | Tue, May 12 | Normal Airline
        BUF 15:00
        6h
        Nonstop
        SEA 16:00
        Buffalo - Seattle | Thu, May 14 | Normal Airline
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      • SEA 07:00
        6h 54m
        1 stop
        BUF 16:54
        Seattle - Buffalo | Sat, May 30 | United Airlines
        US$155 US$303
        49% off
        49% off
        US$303 US$155
      • SEA 22:35
        9h 38m
        1 stop
        BUF 11:13
        Seattle - Buffalo | Sat, May 30 | Delta Air Lines
        US$155 US$303
        49% off
        49% off
        US$303 US$155
      • SEA 11:50
        9h 9m
        1 stop
        BUF 23:59
        Seattle - Buffalo | Fri, May 22 | Delta Air Lines
        US$180 US$303
        41% off
        41% off
        US$303 US$180
      • SEA 22:40
        8h 5m
        1 stop
        BUF 09:45
        Seattle - Buffalo | Sun, May 17 | Delta Air Lines
        US$202
        33% off
        US$303 US$202
      • SEA 11:30
        8h 2m
        1 stop
        BUF 22:32
        Seattle - Buffalo | Sat, May 30 | Jetblue Airways
        US$203
        33% off
        US$303 US$203
      • SEA 23:05
        6h 15m
        1 stop
        BUF 08:20
        Seattle - Buffalo | Sun, May 31 | Delta Air Lines
        US$204
        33% off
        US$303 US$204
      • SEA 10:25
        10h 6m
        1 stop
        BUF 23:31
        Seattle - Buffalo | Sun, May 17 | American Airlines
        US$209
        31% off
        US$303 US$209
      • SEA 06:00
        9h 3m
        1 stop
        BUF 18:03
        Seattle - Buffalo | Sat, May 30 | American Airlines
        US$211
        30% off
        US$303 US$211
      • SEA 10:52
        7h 9m
        1 stop
        BUF 21:01
        Seattle - Buffalo | Sun, May 31 | United Airlines
        US$211
        30% off
        US$303 US$211
      • SEA 06:00
        9h 44m
        1 stop
        BUF 18:44
        Seattle - Buffalo | Mon, Jun 15 | Delta Air Lines
        US$212
        30% off
        US$303 US$212
      • SEA 13:00
        17h 25m
        1 stop
        BUF 14:00
        Seattle - Buffalo | Tue, May 12 | Normal Airline
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Displayed flight fares from Seattle to Buffalo are based on average prices across airlines for the next 3 months, according to the latest Trip.com database.

Frequently Asked Questions

  • What are the cheapest flights from Seattle to Buffalo (SEA-BUF)?

    Based on Trip.com data, United Airlines offers one-way fares as low as US$155 on Cheapest nonstop routes (e.g. SEA to BUF on Sat, May 30), while Delta Air Lines offers Cheapest nonstop round-trips from US$443 departing on Tue, May 19 and returning on Fri, May 22.
  • At the moment, several airlines serve connecting flights from Seattle to Buffalo, including: American Airlines Selected airlines are based on historical data collected from flight bookings made by users on Trip.com within the last 90 days.
  • By analyzing data from all airlines on the Trip.com flight calendar, it looks like the best time to book a flight from Seattle to Buffalo is around 40 days (6 weeks) in advance, and the best time to fly is usually on Tuesday, Wednesday, and Saturday. Tuesday typically offers the cheapest flights for departure, while Saturday offers the best return deals.
  • To find best deals on flights from Seattle to Buffalo, you can use various tools on Trip.com:
    · Be flexible with your travel dates to get the cheapest flight deal. Now the cheapest flight deal is on Sat, May 30, with one-way flights priced at just US$155.
    · Compare airlines strategically. Budget carriers often provide the lowest base fares, while we found the most affordable airline currently operating on this route is United Airlines.
    · Set up price alerts to easily monitor ticket prices without having to check every day.
    · Check Trip.com flight deals and promo codes frequently.
    · Avoid peak season unless you book very early. It seems the peak season for Buffalo travel is around July.
    · Get exclusive promo codes for Trip.com app users.
  • The cheapest months to fly from Seattle to Buffalo is October, when demand for travel is lower.
  • After crunching the numbers on our May flight calendar, it's currently cheapest to fly from Seattle to Buffalo on May 20, 2026 with Jetblue Airways, with prices starting at US$141.
  • You can land at any one of the following hubs in Buffalo, with Seattle-Tacoma International Airport to Buffalo Niagara International Airport (SEA-BUF) is by far the most common option on this route: Buffalo Niagara International Airport (BUF).
  • The time difference between Buffalo and Seattle is 3h.
  • Tickets can only be changed or canceled if permitted by airline policy. 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. However, 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.

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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.