SEA - BUF

$111 Find Cheap Flights from Seattle to Buffalo

This is the cheapest one-way flight price found by a KAYAK user in the last 72 hours by searching for a flight from Seattle to Buffalo departing on 7/10. Fares are subject to change and may not be available on all flights or dates of travel. Click the price to replicate the search for this deal.
1 adult
1 adult, Economy

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These are the airlines KAYAK users have selected most often from within our search results in flight searches from Seattle to Buffalo.
These are the airlines KAYAK users have selected most often from within our search results in flight searches from Seattle to Buffalo.
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Flights Deals

Cheap Flights from Seattle to Buffalo (SEA-BUF)

 
Here are some of the best deals found on KAYAK recently from the most popular airlines for round-trip flights from Seattle to Buffalo that are departing in the next months. While these flights were available on KAYAK in the last 72 hours, prices and availability are subject to change and deals may expire.
Discover the best prices for you by selecting your travel dates on KAYAK.

Recent round-trip flight deals from Seattle to Buffalo

Thu, Jul 3 - Fri, Jul 11
 Logo
6:15 pm - 10:32 amSEA-BUF
13h 17m1 stop
 Logo
2:11 pm - 12:34 amBUF-SEA
13h 23m1 stop
Wed, Aug 20 - Wed, Sep 10
Southwest Logo
5:35 am - 3:45 pmSEA-BUF
7h 10m1 stop
Southwest Logo
4:30 pm - 8:55 pmBUF-SEA
7h 25m1 stop
$337Southwest
Find Deal
Wed, Oct 1 - Wed, Oct 8
Southwest Logo
5:15 am - 5:00 pmSEA-BUF
8h 45m1 stop
Southwest Logo
6:00 am - 12:35 pmBUF-SEA
9h 35m2 stops
$342Southwest
Find Deal
Wed, Jul 30 - Wed, Aug 6
American Airlines Logo
10:43 pm - 11:18 amSEA-BUF
9h 35m1 stop
American Airlines Logo
6:25 am - 12:35 pmBUF-SEA
9h 10m1 stop
$359American Airlines
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Wed, Sep 24 - Sun, Sep 28
American Airlines Logo
6:05 am - 4:50 pmSEA-BUF
7h 45m1 stop
American Airlines Logo
7:30 am - 2:07 pmBUF-SEA
9h 37m1 stop
$363American Airlines
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Tue, Aug 5 - Sat, Aug 9
United Airlines Logo
12:20 am - 9:54 amSEA-BUF
6h 34m1 stop
United Airlines Logo
5:54 pm - 11:59 pmBUF-SEA
9h 05m1 stop
$366United Airlines
Find Deal
Mon, Jul 14 - Tue, Jul 22
United Airlines Logo
12:20 am - 9:54 amSEA-BUF
6h 34m1 stop
United Airlines Logo
7:45 pm - 12:56 amBUF-SEA
8h 11m1 stop
$379United Airlines
Find Deal
Fri, Aug 15 - Mon, Aug 18
Delta Logo
7:20 am - 6:10 pmSEA-BUF
7h 50m1 stop
Delta Logo
7:41 pm - 11:54 pmBUF-SEA
7h 13m1 stop
$388Delta
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Mon, Sep 15 - Tue, Sep 23
Alaska Airlines Logo
12:59 am - 11:11 amSEA-BUF
7h 12m1 stop
Alaska Airlines Logo
5:38 am - 10:49 amBUF-SEA
8h 11m1 stop
$447Alaska Airlines
Find Deal
Mon, Sep 15 - Tue, Sep 23
Alaska Airlines Logo
12:59 am - 11:11 amSEA-BUF
7h 12m1 stop
Alaska Airlines Logo
5:38 am - 4:50 pmBUF-SEA
14h 12m2 stops
$452Alaska Airlines
Find Deal
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KAYAK's insights & trends for Seattle to Buffalo flights

Get data-powered insights and trends into flights from Seattle to Buffalo to help you find the cheapest flights, the best time to fly and much more.

Find cheap flights to Buffalo
Find cheap flights to Buffalo

Planning a trip from Seattle to Buffalo? KAYAK’s data-powered insights will help you find cheap flights. Learn the best time to fly, how early to book your ticket, and other tips to secure great prices.

What’s the cheapest day of the week to fly from Seattle to Buffalo?

The average price of all round-trip flights from Seattle to Buffalo clicked on KAYAK for each day over the last 12 months.

When flying from Seattle to Buffalo, you should consider leaving on a Wednesday and avoid Saturdays if you are looking for the best rates. For your return to Seattle, you’ll find the best rates on Tuesdays and the most expensive ones on Sundays.

What is the cheapest month to fly from Seattle to Buffalo?

To calculate monthly average prices, KAYAK takes all prices for each month over the last year for round-trip flights from Seattle to Buffalo, removes the top 0.1% to account for outliers, and then takes the median of all values for each month.

The cheapest month for flights from Seattle to Buffalo is September, where tickets cost $423 (return) on average. On the other hand, the most expensive months are December and July, where the average cost of round-trip tickets is $616 and $533 respectively.

How far in advance should I book a flight from Seattle to Buffalo?

To calculate weekly average prices, KAYAK takes all prices for each week before departure over the last year for round-trip flights from Seattle to Buffalo, removes the top 0.1% to account for outliers, and then takes the average of all the values for each week.

To get a below average price on the flight from Seattle to Buffalo, you should book around 4 weeks before departure. For the absolute cheapest price, our data suggests you should book 20 weeks before departure.

Good to know

Low seasonFebruary
High seasonJuly
Cheapest flight$111
Best time to beat the crowds but there is an average 5% increase in price.
Most popular time to fly with an average 8% increase in price.
Flight from Seattle to Buffalo

When to book flights from Seattle to Buffalo

Are your dates flexible? Find out the best times to travel from Seattle to Buffalo based on our flight data from the last year. Discover the cheapest month and even day to fly.
Estimated round-trip price
KAYAK looks at all historical flight data for each date to provide a predicted price for one-way trips or round-trips with a duration up to 40 days. While we try to provide actual minimum prices for each date, some prices are predictions and actual prices may differ.

FAQs for booking flights from Seattle to Buffalo

  • How can I easily go from Buffalo Niagara International Airport (BUF) to downtown Buffalo?

    If you choose to drive from Buffalo Niagara International Airport (BUF) to downtown Buffalo, you can plan on the journey taking between 15 and 20 minutes. Otherwise, you can take public transport, like bus line 24. The bus will bring you to the city center in 45 to 50 minutes.

  • Will I be able to check a bag for free on my flight from Seattle-Tacoma International Airport (SEA) to Buffalo Niagara International Airport (BUF)?

    If you are flying Economy from Seattle-Tacoma International Airport (SEA) to Buffalo Niagara International Airport (BUF), most airlines will not allow you to check a bag for free. If you choose to pay for a checked bag, airlines like American and Frontier will likely have a weight limit of 50 pounds.

  • What airline lounges are available at Seattle-Tacoma International Airport (SEA)?

    Passengers can choose from a few different airline lounges in Seattle-Tacoma International Airport (SEA). Concourse A has the Club SEA, the United Club, and the Delta Sky Club, while Concourses C and D have the Alaska Lounge. You can also find the Alaska Lounge in the North Satellite Terminal.

  • What environmentally friendly airlines service flights from Seattle-Tacoma International Airport (SEA) to Buffalo Niagara International Airport (BUF)?

    JetBlue has taken many actions to be more environmentally friendly. For example, the airline has made a goal to have net zero carbon emissions by the year 2040. It has also started integrating sustainable aviation fuel into the fuel that it uses for its fleet. In addition, the company has an awareness program to teach tourists about the importance of keeping the oceans clean.

  • What is the cheapest flight from Seattle to Buffalo?

    In the last 3 days, the lowest price for a flight from Seattle to Buffalo was $111 for a one-way ticket and $323 for a round-trip.

  • Do I need a passport to fly between Seattle and Buffalo?

    No

  • Which aircraft models fly most regularly from Seattle to Buffalo?

    The Airbus A220-300 is the aircraft model that flies most regularly on the Seattle to Buffalo flight route.

  • Which airline alliances offer flights from Seattle to Buffalo?

    oneworld, SkyTeam, and Star Alliance are the airline alliances operating flights between Seattle and Buffalo, with oneworld being the most commonly used for this route.

  • What is the most popular layover when flying to Buffalo from Seattle?

    Chicago is the most popular layover city among KAYAK users traveling from Seattle to Buffalo.

  • Which is the best airline for flights from Seattle to Buffalo, Delta or Southwest?

    The two airlines most popular with KAYAK users for flights from Seattle to Buffalo are Delta and Southwest. With an average price for the route of $510 and an overall rating of 8.0, Delta is the most popular choice. Southwest is also a great choice for the route, with an average price of $474 and an overall rating of 8.0.

  • How does KAYAK find such low prices on flights from Seattle to Buffalo?

    KAYAK is a travel search engine. That means we look across the web to find the best prices we can find for our users. With over 2 billion flight queries processed yearly, we are able to display a variety of prices and options on flights from Seattle to Buffalo.

  • How does KAYAK's flight Price Forecast tool help me choose the right time to buy my flight ticket from Seattle to Buffalo?

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to Buffalo from Seattle is likely to change within 7 days, so travelers know whether to wait or book now.

  • What is the Hacker Fare option on flights from Seattle to Buffalo?

    Hacker Fares allow you to combine one-way tickets in order to save you money over a traditional round-trip ticket. You could then fly to Buffalo with an airline and back to Seattle with another airline. Booking your flights between Seattle and BUF can sometimes prove cheaper using this method.

  • What is KAYAK's "flexible dates" feature and why should I care when looking for a flight from Seattle to Buffalo?

    Sometimes travel dates aren't set in stone. If your preferred travel dates have some wiggle room, flexible dates will show you all the options when flying to Buffalo from Seattle up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

KAYAK’s top tips for finding a cheap flight from Seattle to Buffalo

  • Travelers have a few different options for how they can go from downtown Seattle to Seattle-Tacoma International Airport (SEA). If you opt to drive, the trip will take you on average 20 to 25 minutes. If you choose to take public transportation, like the 1-Line tram instead, you will arrive at the airport in around 45 to 50 minutes.
  • Flights from Seattle-Tacoma International Airport (SEA) to Buffalo Niagara International Airport (BUF) will typically require you to have a layover during your journey. If you are flying with JetBlue, you will likely have a layover in Los Angeles. When flying with Frontier, you may have a stop in Denver.
  • One way to save money on your flight from Seattle-Tacoma International Airport (SEA) to Buffalo Niagara International Airport (BUF) is by opting for Basic Economy. JetBlue has a Blue Basic cabin class for this route, while American Airlines has Basic Economy.
  • Not all airlines allow passengers to bring a free carry-on suitcase when flying from Seattle-Tacoma International Airport (SEA) to Buffalo Niagara International Airport (BUF) with Economy. While Frontier Airlines requires you to pay to bring a carry-on suitcase, American Airlines allows you to bring one for free.
  • As flights from Seattle-Tacoma International Airport (SEA) to Buffalo Niagara International Airport (BUF) are rather a long journey, you may want to upgrade to a different cabin class to maximize your comfort. Options like Premium Economy and Business are available for this route.

Reviews of the top 5 airlines serving from Seattle to Buffalo

 
See real verified KAYAK customer reviews for airlines flying from Seattle to Buffalo. Airline scores are aggregated from all reviews left by passengers on KAYAK after flying with an airline. KAYAK doesn’t show reviews that are older than 5 years. Learn how KAYAK collects reviews.
Need help choosing which airline to fly with from Seattle to Buffalo? KAYAK airline reviews give an overall score for each airline based on loads of factors, including comfort, boarding, in-flight entertainment and more, to make your decision easier. See airline scores according to verified KAYAK customer reviews.
8.0
Alaska AirlinesOverall score based on 10000 reviews
7.1Food
8.1Boarding
7.8Comfort
8.5Crew
7.1Entertainment
Airline reviews

Food was just ok..had snack box :( Crew was very nice

8.0 ExcellentAnonymous, Jun 2025SEA - MKE
Read more Alaska Airlines reviews

Food was just ok..had snack box :( Crew was very nice

Passengers were not informed timely of delays. The staff appeared like they didn't really care about the passengers.

Food and entertainment aren’t a thing on these regional flights. But it was a smooth flight. Could see gorgeous countryside through the large windows. The earplugs are a nice touch for the prop engines but the hum of the engines did not bother me. Grateful the option exists to easily get from A to B.

Both flights were delayed going to our destination and leaving, and communication about the delays was not great by the airlines, now the crews were phenomenal and great to be around!!

Delayed. It's not our first flight with them either, it's actually our 3rd and all 3 were delayed by hours each time. It was a myriad of delays. On one flight we boarded after being delayed for a little over an hr, only to be told we were going to sit in the plane for another hour before departing. Once landed, we waited another 40ish min to get to our gate. On another flight, flight was delayed just under 3 hrs but atleast we got to wait it out at the airport terminal. Its just a bad experience overall flying with Alaska Airlines.

We had to take the train to our next gate but had time to eat a meal. When to our next gate and asked employee about gate and got informed that gate had been changed so back on train to next gate. So thankful she was there and informed us of gate change. Because of the issue the boarding was slow but employees were there and busy helping all and keeping it organized.

Very pleasant and the flight felt like it went by quick

All flight entertainment is from your own device and there was an $8 charge to connect. also 1 drink and a small bag of pretzels was all that was given to us. other that that the seats were good and the flight itself was as expected.

It is very bad they do not give you money back

They lost our bag and it took them days to find it. Terrible communication and lots of lies about where it was. Their system hasn’t merged with Hawaiian yet they route people on shared flights with Hawaiian, creating an administrative nightmare.

Southwest is Southwest. No frills. If you're luck enough to get a happy crew (we did), then it makes for a nicer flight.

Southwest is typically delayed, and it gets wearisome. It is no longer a discount airline and you get way less than you pay for when it comes to comfort and Ce.

We sat on the plane on the tarmac for 4 hours.

I'm not a fan of Southwest's model. I don't like the herding style of boarding.

Flight crew and cabin crew were great. I had to rearrange flights because my original flight was 3hrs delayed for weather, the rub is the flight I moved to boarded on time then we sat at the gate for 2 hours because scheduling stole our first officer for another flight, TWICE. Then our actual FO was an hour delayed. To make it worse my original flight went from a 3 hour delay to departing 15min EARLY. Just poor scheduling operations all around.

Bring back peanuts Take our drink orders when were all seated, especially after you switch to assigned seating.

Staff was far less than helpful at all times. Departure and arrival times mean nothing to Southwest. Extremely disappointed, will never fly with them again, and I’ll be sure to share my experience with all.

It is southwest seat was ok. Not the most comfortable seat

I’ve always loved Southwest. No issues at all. I was flying standby and the gate agent was extremely friendly and helpful. Boarding was smooth and I was able to get a window seat in the emergency exit row. Crew was fantastic! They were very professional and accommodating. We had to divert from our destination due to weather but the flight crew kept everyone at ease and informed us of all pertinent information. Excellent flight

The price of the tickets isn't matching the flight experience. No matter how long the flight is, you're only getting pretzels. The flight attendants looked unkept and over it.

I like for how they process during check in. It was very smoothly.

Most aspects were good however if they assign boarding zones they ought to enforce them or why bother? My luggage from SAN-JFK-MAD was lost in NY so I without my main bag for two days upon arrival in Spain. They were helpful in tracking it and eventually delivered it to my hotel. The flub was because of a delay upon arrival in NYC. I had booked 2 1/2 hours between flights but we had to hold on the taxiway for an hour after landing while waiting for a clear gate which likely caused the baggage error.

Great overall. There was a bit of turbulence so they could only serve water because too much turbulence for the carts. Was glad they prioritized safety though

Flight was delayed long enough that I was misding my connecting flight. The agents could not get me on a comparable flight, nor could they get me s Main Cabin seat I had paid for, nor could they get me on a comparable connecting flight. The gate agent would not issue meal vouchers, even though I was delayed over six hours! I had to spend over an hour and 15 minutes with customer service on the phone to See if they could get me on a better flight and get a meal voucher. Customer service was not helpful enough in trying to find alternate flights and it Ended up taking me 24 hours for a 12 hour trip!! Delta does not provide upgrades NOR will they even give you a pass for a few hours to their lounge. They claim that they do not issue daily passes to their lounge anymore. I call BS since this would be no extra cost to them to provide excellent customer service and give you a few hours to relax in comfort when you’re sitting in a crowded airport and your flight has been screwed up for that many hours.

Delayed take-off. Very small plane so very scary with lots of bumps during the flight. Would never fly Delta on short flights in small 80 seaters plane again! Felt relieved when landed.

The plane was old with small storage areas that had problems closing/latching and not enough storage for everyone, and worn, damaged seats. Service was great but feel a little unsafe on such well used planes.

Great staff. Wifi is terrible. Signing up for skylines is a painstaking process. Had to call customer service just to get my flight itinerary and confirmation sent to me. Consistent delays. A well staffed company that is run so poorly. Upper management needs to be renewed.

The crew was wonderful and attentive. The seats near exit row were restrictive. Offer healthy snacks please

Boarding is, as it always is… horrible. Gate lice. Slow moving zones. Too many people with carry ons

Other then mechanical/ computer problem and 3.5 hours flight delay the flight was great. I guess that what happened when you fly an old airplane now a day.

Gate agent did not hold flight for connection, provided no assistance to get new flight

Evidently, my seat had the only broken TV. I couldn’t plug it in, get it to come on, or watch anything, and of course, no one could fix it while we were on the plane. The service was good and the boarding was quick

United airlines, mediocre at best. No issues , nothing great . Worked for me

it was so bad. I tried to board my flight from vancouver to saskatoon. And to my surprise they did not board me cause the flight was changed and no email was send to me. and on my boarding pass which i got from seattle says different flight. I did not knew anyone from Vancouver, air canada crew was rude, i asked for today flight but they were rude and i had early morning dental appointment in saskatoon. I was so much in pain and my whole day is wasted today. and i suffered alot. They did provide me hotel but they did not provide me any food. I am really really disappointed first time had so bad experience with air canada. I may think twice to book it again. If i can get any reply or any composition that would be great. Thanks

It was fine, definitely older planes with no charging or anything. There’s no entertainment set up on board, but it is nice that they allow you to access the in flight entertainment from your phone without having to pay for the Wi-Fi and they do offer free texting.

Boarding was mayhem. Late boarding by 15 minutes because of lack of staff (missing 1 flight attendant. We had to wait for an arrival of another plane before we could board). Flight was a little rough, but cannot blame on airlines.

Impressed with the service despite turbulence because of the weather. Both flights arrived before their scheduled times.

Very comfortable (upgraded to business class). The audio on my screen didn’t work, but I managed to play the audio through my phone while watching the screen.

Great experience…left a bit behind schedule but made up fir that in the air and landed 10 minutes early 😁

I was supposed to be on business class at first class from Denver back to Miami due to weather changes. I missed my connection and it’s put on a flight to Fort Lauderdale. Instead of honoring my business class/1st class ticket, they put me in coach, but there were two first class seats open. I think it’s absolutely disgusting that I paid for first class $1300 ticket and they put me in economy and they had to open seats available and I have still not been refunded the difference. I ended up having to eat a snack box instead of the meal I was supposed to get and did not get home till 2 AM so I think that’s a little pathetic that I had to live off crackers for dinner And my poor dog ate some cheese and salami. Oh yes, apparently when they switched me to the new flight they forgot to mention I had a service dog

Whenever a passenger purchase a ticket his advantage number should automatically to his information. It's not everyone remember the number. You request for your number and American airline agent say they will email it....and they never email anything and you loose your mileage just because you don't remember your number. It should automatically go your information and associate with your email account at all times

Boarding took forever, the plane was cramped and cold, and the seatbelt song came on constantly throughout the red eye flight with a loud pre-recorded message playing each time

Cabin felt crammed Snacks are lame But crew was super efficient getting us out on time despite delay

Everything was great except it became so hot on the plane I couldn’t sleep on my red eye flight. It didn’t really cool down till we started descending.

Flight was empty so had a whole row to myself. Still had to wait to get the bag due to the negligence at Palm Springs departure.

I flew out of Reagan National. My flight was delayed, delayed, delayed, and then canceled ...THREE TIMES over TWO DAYS. Staff were seemingly not empowered to provide information on why the flights were screwed up. A real nightmare.

The only thing is if Wi-Fi is available after you land and taxi to the gate. It takes forever to get to the gate, and having the Wi-Fi continue would be great to bide the time at least 5 minutes before you arrive at the entrance. That is my only comment; otherwise, everything was good.

Amazingly comfy flight - I had upgraded for a reasonable price and it was worth it. The food also was good.

Only thing that I liked it that I got to my destination safely, otherwise American Airlines stinks.

Ok. Got us there safely and a bit early. Need food available on this long flight. Almost 3 hours.

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