SEA - BUF

$144 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 5/29. 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, 0 bags

KAYAK searches hundreds of travel sites at once for deals on flights to Buffalo

 
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.
Travelers love KAYAK
41,299,237 searches in the past 7 days on KAYAK

Save 24% or moreCompare multiple travel sites with one search.

Track pricesNot ready to book? Create a price alert for when prices drop.

Bundle and saveSave money when you bundle your flight + hotel.

Filter your dealsChoose cabin class, free Wi-Fi and more.

Everything you should know

Cheapest round-trip
$391
Typical prices: $557-$419
Southwest
Wed 5/27Wed 6/3
SEA - BUF • 1 stop
Cheapest one-way
$144
Typical prices: $171-$263
Frontier
Fri 5/29
SEA - BUF • 2 stops
Top airlines
Cheapest • from $391 (round-trip)
Best reviews • 8.0 score
Airline reviews
Airline reviews
+1
+1
Airline reviews
Airline reviews
+1
Nonstop flights
Not available
There are currently no direct flights between Seattle and Buffalo. You'll need at least 1 connection.
Insights
Insights
Insights
Insights
Top layover airports
Cheapest • Avg $339 (round-trip)
Shortest trip • 6h 34m (one-way)
Insights
Insights
Insights
Insights
When to book
in advance
Our data shows that travelers who book at least 5 weeks in advance save around 48% compared to booking last minute.
Insights
Insights
Insights
Insights
When to travel
Cheapest • 23% price drop
Most popular
Good to know
Good to know
+1
+1
Good to know
Good to know
+1
Start a new search
KAYAK searches 100s of sites at once to find you the best travel deals.
We hope you love your trip to Buffalo!
Flight Deals
Booking Insights
Flight 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

Wed, May 27 - Wed, Jun 3
Southwest Logo
11:45 pm - 10:15 am
SEA
-
BUF
7h 30m
1 stop
Southwest Logo
6:55 pm - 12:10 am
BUF
-
SEA
8h 15m
1 stop
$391Southwest
Wed, May 27 - Wed, Jun 3
Southwest Logo
7:10 pm - 7:50 am
SEA
-
BUF
9h 40m
2 stops
Southwest Logo
6:55 pm - 12:10 am
BUF
-
SEA
8h 15m
1 stop
$396Southwest
Wed, Aug 26 - Wed, Sep 2
Southwest Logo
11:00 pm - 12:45 pm
SEA
-
BUF
10h 45m
2 stops
Southwest Logo
9:45 am - 6:10 pm
BUF
-
SEA
11h 25m
2 stops
$401Southwest
Wed, Jun 3 - Mon, Jun 8
United Airlines Logo
11:20 pm - 9:51 am
SEA
-
BUF
7h 31m
1 stop
United Airlines Logo
5:52 pm - 11:59 pm
BUF
-
SEA
9h 07m
1 stop
$406United Airlines
Mon, May 25 - Mon, Jun 1
Delta Logo
11:05 pm - 8:20 am
SEA
-
BUF
6h 15m
1 stop
Delta Logo
6:25 am - 11:05 am
BUF
-
SEA
7h 40m
1 stop
$421Delta
Tue, Jun 23 - Tue, Jun 30
American Airlines Logo
12:46 pm - 11:54 pm
SEA
-
BUF
8h 08m
1 stop
American Airlines Logo
2:47 pm - 10:58 pm
BUF
-
SEA
11h 11m
1 stop
$422American Airlines
Tue, Sep 1 - Sun, Sep 6
American Airlines Logo
5:05 am - 3:59 pm
SEA
-
BUF
7h 54m
1 stop
American Airlines Logo
1:03 pm - 8:57 pm
BUF
-
SEA
10h 54m
1 stop
$434American Airlines
Wed, Jun 10 - Sun, Jun 14
Southwest Logo
9:25 pm - 8:10 am
SEA
-
BUF
7h 45m
1 stop
Southwest Logo
1:20 pm - 12:05 am
BUF
-
SEA
13h 45m
1 stop
$439Southwest
Wed, May 20 - Mon, May 25
American Airlines Logo
11:33 pm - 9:31 am
SEA
-
BUF
6h 58m
1 stop
American Airlines Logo
5:25 am - 11:46 am
BUF
-
SEA
9h 21m
1 stop
$443American Airlines
Wed, May 27 - Wed, Jun 3
Southwest Logo
7:10 pm - 7:50 am
SEA
-
BUF
9h 40m
2 stops
Southwest Logo
3:10 pm - 11:35 pm
BUF
-
SEA
11h 25m
2 stops
$444Southwest
Booking Insights

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.

How much is a round-trip flight from Seattle to Buffalo?

This analysis is based on the cheapest round-trip price found on KAYAK in the last 12 months by searching for a flight from Seattle to Buffalo departing in May.

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 March, where tickets cost $373 (return) on average. On the other hand, the most expensive months are December and November, where the average cost of round-trip tickets is $650 and $595 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 5 weeks before departure, which saves you about 48% compared to booking last minute. For the absolute cheapest price, our data suggests you should book 10 weeks before departure.

Good to know

Low seasonJanuary
Cheapest flight$144
Best time to beat the crowds but there is an average 9% 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 $144 for a one-way ticket and $391 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?

    We unfortunately don’t have that data for this specific route.

  • Which airline alliances offer flights from Seattle to Buffalo?

    SkyTeam, Star Alliance, and oneworld are the airline alliances operating flights between Seattle and Buffalo, with SkyTeam 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, Southwest or Delta?

    The two airlines most popular with KAYAK users for flights from Seattle to Buffalo are Southwest and Delta. With an average price for the route of $464 and an overall rating of 8.0, Southwest is the most popular choice. Delta is also a great choice for the route, with an average price of $495 and an overall rating of 7.9.

  • 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
SouthwestOverall score based on 4314 reviews
8.1Boarding
7.0Food
7.5Entertainment
8.0Comfort
8.6Crew
Airline reviews

The entire experience from boarding to landing was amazing! The crew were very friendly. Will definitely be back.

10.0 Excellentlarry, Apr 2026
LGB - PHX
Read more Southwest reviews

The entire experience from boarding to landing was amazing! The crew were very friendly. Will definitely be back.

no service at all due to turbulence. they should've at least given us snacks, there were only 10 people on the entire flight.

First time I've had to use the disabled accommodations. And I could not have had a better experience with Southwest, i was having trouble getting from one terminal to another due to my heart failure. And the next thing I know a Southwest agent had made sure. I had a wheelchair at all my flights. Can't thank them enough.

Delayed flight, lack of information, boarding process is a mess as is the carryon luggage causing issues when leaving the plane….just a poor experience.

Comfortable. Easy. No problems. Just wish they had gf options for snacks.

The crew was very kind and made going to Hawaii relaxing and fun to look forward to! Thank you Southwest for a pleasant flight!

This leg was much better, but we did have to have a 3 hour lay o er after coming from a very exhausting hiccup with our flight from BNA to Den

We waited in the airplane for over 45 min for a southwest employee to make the flight. This cause over half the plane to miss their connecting flight in Denver. When we confronted the desk upon arrival, they told us the only flight they had was the next day leaving at 8:50 pm!!! Or they offered to get us to Burbank or LA, but after that we were on our own to get back to Santa Barbara. I paid for a flight from sba to bna bna to sba. My re entry into mom mode has been 💯 rough because of southwest mistake with my flight. And now I’m leaving to Reno tomorrow for a vballl tournament and just discovered that my leg in Vegas has me and my 3 kids on a stand by flight even though I had booked these ticket last year November!! Do better southwest!

Southwest is kind of a slum airline. It’s gotten more expensive over the years for less and less service. I am a Southwest Chase Visa card holder and was forced to choose a seat in the 26th row in the middle seat. However my wife who is a rewards member but doesn’t hold a card or anything else, gets randomly assigned a normally paid seat in row 6! How does that work?

For the first time in a long time, the Wi-Fi actually worked the entire flight! The flight crew was amazing as usual.

Very easy to use and convenient, you can perform any action within the same portal

Crew was nice, meal was good. Entertainment had to be rebooted 3 times and still did not work. Turns out there was residue on screen, it needed to be cleaned to prevent the touchscreen buttons from continuously activating. I had entertainment for the last 45 minutes of a 5 hour 45 minute flight. Really unacceptable for first class. Flight attendent indicated your cleaning solution creates this problem. Seems as if this is widely known, you should be using a different product or cleaning better. Really really disappointing which simply added to the wi fi on your planes with reliably never ever works.

The baggage belt was not updated on the Delta App and was displayed on the wrong belt board. Was not expecting this to happen.

Landed without a gate ready. Plane is extremely old and dirty.

Pilots lied about waiting on “paperwork”. Sat in the plane for over an hour, waiting on some papers to be printed according to the pilot and then all of a sudden he says good news maintenance is finally on their way. Maybe they can fix it before we get our paperwork. Ended up missing my connection in LaGuardia and as a result, had a fly home to Lexington instead of the Louisville airport. Then paid $100 to uber to Louisville since it was midnight by the time I got in. I wish they would just be transparent with passengers sometimes and not try to beat around the bush on why things are delayed.

The flight was delayed 90 minutes The Gate was wrong The Restroom on Aircraft was not clean There was a half used water bottle in my seat

Too many people are taking up space in the overhead bins with their extra piece of luggage. Since they cannot fit their backpacks or extra luggage piece under the seat in front of them, they store it in the overheads and thus taking up room for other passengers. It wasn’t only one or two persons; more like 12 or 13 passengers.

Got to fly my favorite plane, the Boeing 767-400ER, to Milan. The soft blush pink mood lighting during meal service was very beautiful and gorgeous. The service was top-notch, and our flights were on time. I highly recommend Delta.

Snacks and included beverages were appreciated. Boarding went smoothly. Plenty of overhead bin space. Seats get very uncomfortable after a couple of hours. After waiting 10 painful minutes for my walker, a very nice Delta guest agent pushed me in a wheelchair to the gate. It was finally delivered to me after another 15 minutes . Our checked bag was on the carousel long b4 I was able to retrieve it. Fortunately it was still there but somewhere along the way the straps we used to secure it were removed and and were not reattached. Wish I had made note of the agents name.

The cabin temperature was nice and cool. The wifi was not working.

Booked through Kayak Business, had a seat in middle and towards back due to booking rate, not comfortable.

Was great in general, try to respect time and excuses when slight changes have been made, appreciated!

A long delay. Don't travel late in the day.

Super friendly with lots of drink options an entertainment. Friendly crew.

Standard flight with a drinks and a snack- overall very quick flight. The flight attendants were very strict, bordered on rude.

Outstanding service, efficient & friendly crew, flight was safe, comfortable & on time

Delayed - weather wasn't bad at either end. Also sat on tarmac in ORD.

They told us yesterday APR21st that they were cleaning the plane and we got delayed. After that they said they didn't had any crew for the flight so they cancelled the flight till next day.

The crew was great. Very friendly and responsive. The plane was old, small and tight. We ran out of overhead space and I had to check. Middle seat was particularly tight.

The flight crew on this leg of my trip was very friendly and pleasant. Every one of them was humorous, as well as helpful and accommodating. This group was BY FAR the best crew I’ve flown with. They deserve kudos.

Boarding gate at LAX was too crowded—two gates next to one another

It was really a terrific experience both going and returning on AA. Staff and crew were professional.

This short sector between Miami and JFK was undertaken purely for business purposes, with efficiency as the primary objective rather than a full inflight experience. Overall, the journey met its intended purpose; however, the ground experience at Miami stood out significantly. During check-in, I was unable to link my frequent flyer details from Qatar Airways (oneworld alliance) through either the self-service kiosk or web check-in. The situation was handled exceptionally well by the check-in agent, who demonstrated remarkable ownership. She coordinated across multiple counters, ensured my frequent flyer number was correctly reflected, reissued the boarding pass, and confirmed that mileage accrual would be recognized. Additionally, she ensured the boarding pass reflected priority status, enabling a seamless priority check-in experience without delays. This level of proactive service was both commendable and impactful. Boarding and the inflight experience, operated by American Airlines under a codeshare arrangement, were efficient but largely transactional. While operational delivery was smooth, there was no visible recognition of oneworld frequent flyer status onboard. In comparison to the consistently personalized engagement typically experienced with Qatar Airways, this absence was noticeable—though understandably a potential limitation of codeshare alignment rather than a direct service shortfall. In summary, while the flight itself fulfilled its operational intent, the exceptional professionalism and commitment demonstrated at the Miami check-in counter was the defining highlight of this journey. Greater consistency in elite recognition across partner airlines would further enhance the overall experience.

I almost missed my flight and they helped me out enormously

Flight was fine, but not having WiFi was a major negative

Everything was excellent and I enjoyed myself. Thank for everything

THe flight was an hour late. You got us on the plan and we sat on the ground for 45 minutes with no information from the pilot whatsoever. Worst flight this year.

We did not have enough time to make our connecting flight. As a result, we were put onto a different airline for our second leg. The different airline was NOT comparable to British Airlines, and our arrival was significantly delayed. The actual flight on BA was amazing.

We left at 1030 am pacific from LA and supposed to land at 7 pm Eastern in NY. They made a detour, stopped in Philadelphia and didn’t land till 1130 PM Eastern!!! Worst flight experience with no pilot communication with no explanation as to what was going on. Everyone was very frustrated to say the least.

Found that the plane used for this short flight is smaller and therefore the seats are really squeezed tight.

Plane was hot and miserable and the crew was rude!

12 hour delay required getting on and off plane 3 times - would have at least liked to have been offered a snack or drink

They didn’t offer a water, even after I asked

They switched our terminal 3 times and we were delayed for four plus hours!!!

It was an early flight and most people napped/slept and the crew let us which was nice.

The crew acted like they had never done this and kept barking passive aggressive orders at people. + the security line + the delay + sitting on the tarmac for 2 hours + none of the apps or signage updating with correct times

More inflight connection. And leg space is horrible. And the paying for baggage I'd ridiculous!!!

My flight was originally from SAT to MCO connecting from MCO to ORD. We got diverted to ATL and than Frontier staff there was sooo un helpful first they said they couldn’t give us any accommodation since our flight first got delayed that cancelled and now it’s 221am and I am still in ATL since they said they need to create a new flight my final destination is ORD and I have been delayed twice and cancelled. With no real help the frontier app didn’t work no email updates over all such a horrible experience

There's no seats that lean back with little leg space i wad uncomfortable the entire flight. Your charges for extra baggage is despicable and costly!!

Remind customers of the need to have passport or new ID for boarding.

Everything you need to know for your flight from Seattle to Buffalo

Information on your arrival and departure airports