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Flights from Seattle to Buffalo

Find cheap airlines flights from Seattle to Buffalo

You can choose from 3 airlines that fly from Seattle to Buffalo, including American Airlines, Delta Air Lines, and United Airlines. United Airlines has lowest fares on this route.
American Airlines logo American Airlines
Delta Air Lines logo Delta Air Lines
United Airlines logo United Airlines
Airlines are determined based on actual purchased flight tickets from Seattle to Buffalo according to previous 12 months data from Trip.com.

Find flight deals from Seattle to Buffalo for the next 3 months. Book one way flights from $155 or round trip flights from $362.

      • SEA 3:21 PM
        19h 12m
        1 stop
        BUF 1:33 PM
        Seattle - Buffalo | Fri, May 1 | Alaska Airlines
        BUF 6:00 AM
        16h 55m
        1 stop
        SEA 7:55 PM
        Buffalo - Seattle | Sun, May 3 | Jetblue Airways
        $362 $610
        41% off
        41% off
        $610 $362
      • SEA 1:24 PM
        6h 15m
        1 stop
        BUF 10:39 PM
        Seattle - Buffalo | Fri, May 1 | Delta Air Lines
        BUF 7:00 AM
        10h 42m
        1 stop
        SEA 2:42 PM
        Buffalo - Seattle | Sun, May 3 | Delta Air Lines
        $422 $610
        31% off
        31% off
        $610 $422
      • SEA 10:52 AM
        7h 9m
        1 stop
        BUF 9:01 PM
        Seattle - Buffalo | Fri, May 1 | United Airlines
        BUF 11:02 AM
        7h 46m
        1 stop
        SEA 3:48 PM
        Buffalo - Seattle | Sun, May 3 | United Airlines
        $441 $610
        28% off
        28% off
        $610 $441
      • SEA 11:35 PM
        8h 38m
        1 stop
        BUF 11:13 AM
        Seattle - Buffalo | Tue, May 19 | Delta Air Lines
        BUF 2:47 PM
        11h 11m
        1 stop
        SEA 10:58 PM
        Buffalo - Seattle | Fri, May 22 | American Airlines
        $442
        28% off
        $610 $442
      • SEA 10:47 PM
        8h 31m
        1 stop
        BUF 10:18 AM
        Seattle - Buffalo | Fri, May 1 | American Airlines
        BUF 7:00 AM
        10h 42m
        1 stop
        SEA 2:42 PM
        Buffalo - Seattle | Sun, May 3 | Delta Air Lines
        $483
        21% off
        $610 $483
      • SEA 10:47 PM
        8h 31m
        1 stop
        BUF 10:18 AM
        Seattle - Buffalo | Tue, May 19 | American Airlines
        BUF 2:47 PM
        11h 11m
        1 stop
        SEA 10:58 PM
        Buffalo - Seattle | Fri, May 22 | American Airlines
        $489
        20% off
        $610 $489
      • SEA 11:30 AM
        8h 2m
        1 stop
        BUF 10:32 PM
        Seattle - Buffalo | Tue, May 19 | Jetblue Airways
        BUF 2:47 PM
        11h 11m
        1 stop
        SEA 10:58 PM
        Buffalo - Seattle | Fri, May 22 | American Airlines
        $493
        19% off
        $610 $493
      • SEA 11:53 PM
        6h 48m
        1 stop
        BUF 9:41 AM
        Seattle - Buffalo | Tue, May 19 | United Airlines
        BUF 2:47 PM
        11h 11m
        1 stop
        SEA 10:58 PM
        Buffalo - Seattle | Fri, May 22 | American Airlines
        $493
        19% off
        $610 $493
      • SEA 9:35 PM
        10h 38m
        1 stop
        BUF 11:13 AM
        Seattle - Buffalo | Sat, May 16 | Delta Air Lines
        BUF 6:00 PM
        9h 36m
        1 stop
        SEA 12:36 AM
        Buffalo - Seattle | Mon, May 18 | American Airlines
        $497
        19% off
        $610 $497
      • SEA 10:35 PM
        8h 37m
        1 stop
        BUF 10:12 AM
        Seattle - Buffalo | Fri, May 22 | American Airlines
        BUF 5:25 AM
        9h 21m
        1 stop
        SEA 11:46 AM
        Buffalo - Seattle | Mon, May 25 | American Airlines
        $530
        13% off
        $610 $530
      • SEA 1:00 PM
        17h 25m
        1 stop
        BUF Invalid Date
        Seattle - Buffalo | Mon, Apr 20 | Normal Airline
        BUF 3:00 PM
        6h
        Nonstop
        SEA 4:00 PM
        Buffalo - Seattle | Wed, Apr 22 | Normal Airline
        Find more flights
        Find more flights
      • SEA 7:00 AM
        6h 54m
        1 stop
        BUF 4:54 PM
        Seattle - Buffalo | Wed, May 20 | United Airlines
        $155 $241
        36% off
        36% off
        $241 $155
      • SEA 10:35 PM
        9h 38m
        1 stop
        BUF 11:13 AM
        Seattle - Buffalo | Wed, May 20 | Delta Air Lines
        $155 $241
        36% off
        36% off
        $241 $155
      • SEA 11:50 AM
        9h 9m
        1 stop
        BUF 11:59 PM
        Seattle - Buffalo | Tue, May 12 | Delta Air Lines
        $179 $241
        26% off
        26% off
        $241 $179
      • SEA 11:21 AM
        17h 22m
        1 stop
        BUF 7:43 AM
        Seattle - Buffalo | Sun, Jun 7 | Frontier Airlines
        $198
        18% off
        $241 $198
      • SEA 10:40 PM
        8h 5m
        1 stop
        BUF 9:45 AM
        Seattle - Buffalo | Thu, May 7 | Delta Air Lines
        $202
        16% off
        $241 $202
      • SEA 11:30 AM
        8h 2m
        1 stop
        BUF 10:32 PM
        Seattle - Buffalo | Wed, May 20 | Jetblue Airways
        $203
        16% off
        $241 $203
      • SEA 11:00 PM
        8h 4m
        1 stop
        BUF 10:04 AM
        Seattle - Buffalo | Sun, May 3 | United Airlines
        $204
        15% off
        $241 $204
      • SEA 10:40 PM
        9h 30m
        1 stop
        BUF 11:10 AM
        Seattle - Buffalo | Sun, May 3 | Delta Air Lines
        $204
        15% off
        $241 $204
      • SEA 7:20 AM
        8h 59m
        1 stop
        BUF 7:19 PM
        Seattle - Buffalo | Wed, Apr 29 | Delta Air Lines
        $205
        15% off
        $241 $205
      • SEA 10:25 AM
        10h 6m
        1 stop
        BUF 11:31 PM
        Seattle - Buffalo | Thu, May 7 | American Airlines
        $209
        13% off
        $241 $209
      • SEA 1:00 PM
        17h 25m
        1 stop
        BUF Invalid Date
        Seattle - Buffalo | Mon, Apr 20 | 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.

Flight Info | Seattle to Buffalo

The distance between Seattle and Buffalo is approximately 3,404.98 km. Based on Trip.com's data travel demand peaks in July. The off-season for travel is October.

Cheapest one-way flight price$155
Cheapest round-trip ticket price$362
Off-season for travelOctober
Peak season for travelJuly
Flight distance3,404.98 km
Popular airlineAmerican Airlines
Flight statistics for the Seattle–Buffalo route are based on aggregated booking data from Trip.com over the past 12 months.

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 $155 on Cheapest nonstop routes (e.g. SEA to BUF on Wed, May 20), while Alaska Airlines offers Cheapest nonstop round-trips from $362 departing on Fri, May 1 and returning on Sun, May 3.
  • At the moment, several airlines serve connecting flights from Seattle to Buffalo, including: American Airlines Delta Air Lines United 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 Wed, May 20, with one-way flights priced at just $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 April flight calendar, it's currently cheapest to fly from Seattle to Buffalo on April 19, 2026 with Delta Air Lines, with prices starting at $351.
  • 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 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.