SEA - BUF

$137 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 7/7. 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.
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Everything you should know

Cheapest round-trip
$305
Typical prices: $497-$306
United Airlines
Wed 9/2Wed 9/9
SEA - BUF • 1 stop
Cheapest one-way
$137
Typical prices: $220-$349
JetBlue
Tue 7/7
SEA - BUF • 1 stop
Top airlines
Cheapest • from $305 (round-trip)
Best reviews • 7.9 score
Airline reviews
Airline reviews
+1
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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
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Insights
Top layover airports
Cheapest • Avg $303 (round-trip)
Shortest trip • 6h 33m (one-way)
Insights
Insights
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When to book
in advance
Our data shows that travelers who book at least 3 weeks in advance save around 43% compared to booking last minute.
Insights
Insights
Insights
Insights
When to travel
Cheapest • 25% price drop
Most popular
Good to know
Good to know
+1
+1
Good to know
Good to know
+1
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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, Sep 2 - Wed, Sep 9
United Airlines Logo
11:00 pm - 9:28 am
SEA
-
BUF
7h 28m
1 stop
United Airlines Logo
5:58 pm - 10:45 pm
BUF
-
SEA
7h 47m
1 stop
$305United Airlines
Wed, Sep 2 - Wed, Sep 9
Southwest Logo
5:20 am - 5:45 pm
SEA
-
BUF
9h 25m
2 stops
Southwest Logo
6:25 pm - 11:35 pm
BUF
-
SEA
8h 10m
1 stop
$312Southwest
Tue, Sep 1 - Sun, Sep 6
American Airlines Logo
9:58 pm - 10:18 am
SEA
-
BUF
9h 20m
1 stop
American Airlines Logo
5:10 am - 9:29 am
BUF
-
SEA
7h 19m
1 stop
$314American Airlines
Wed, Sep 2 - Wed, Sep 9
Southwest Logo
5:20 am - 5:45 pm
SEA
-
BUF
9h 25m
2 stops
Southwest Logo
3:00 pm - 11:05 pm
BUF
-
SEA
11h 05m
2 stops
$317Southwest
Fri, Sep 11 - Sat, Sep 12
JetBlue Logo
11:55 pm - 11:14 am
SEA
-
BUF
8h 19m
1 stop
JetBlue Logo
2:30 pm - 10:38 pm
BUF
-
SEA
11h 08m
1 stop
$322JetBlue
Tue, Aug 25 - Sat, Aug 29
American Airlines Logo
6:25 am - 6:02 pm
SEA
-
BUF
8h 37m
1 stop
American Airlines Logo
6:00 am - 11:46 am
BUF
-
SEA
8h 46m
1 stop
$337American Airlines
Tue, Sep 1 - Sun, Sep 6
Delta Logo
11:10 pm - 11:22 am
SEA
-
BUF
9h 12m
1 stop
Delta Logo
12:02 pm - 6:45 pm
BUF
-
SEA
9h 43m
1 stop
$346Delta
Wed, Jul 15 - Tue, Jul 21
American Airlines Logo
11:56 pm - 9:37 am
SEA
-
BUF
6h 41m
1 stop
American Airlines Logo
8:08 am - 2:27 pm
BUF
-
SEA
9h 19m
1 stop
$369American Airlines
Fri, Sep 4 - Tue, Sep 8
Southwest Logo
10:30 pm - 9:55 am
SEA
-
BUF
8h 25m
1 stop
Southwest Logo
6:25 pm - 11:35 pm
BUF
-
SEA
8h 10m
1 stop
$370Southwest
Wed, Aug 12 - Wed, Aug 19
Southwest Logo
5:20 am - 5:45 pm
SEA
-
BUF
9h 25m
2 stops
Southwest Logo
6:25 pm - 11:35 pm
BUF
-
SEA
8h 10m
1 stop
$374Southwest
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 September.

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 October, where tickets cost $370 (return) on average. On the other hand, the most expensive months are December and November, where the average cost of round-trip tickets is $654 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 3 weeks before departure, which saves you about 43% compared to booking last minute. For the absolute cheapest price, our data suggests you should book 12 weeks before departure.

Good to know

Low seasonJanuary
Cheapest flight$137
Best time to beat the crowds but there is an average 7% increase in price.
Most popular time to fly and prices are also 23% lower on average.
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 5 days, the lowest price for a flight from Seattle to Buffalo was $137 for a one-way ticket and $305 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, 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 $508 and an overall rating of 7.9, Delta is the most popular choice. Southwest is also a great choice for the route, with an average price of $483 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.
7.9
SouthwestOverall score based on 4235 reviews
7.5Entertainment
8.6Crew
8.1Boarding
7.0Food
8.0Comfort
Airline reviews

Flight was delayed over 3 hours. Planes were dirty. Staff indifferent. And they serve vegan pretzels as snacks.

2.0 MediocreMatthew, Jun 2026
CVG - MDW
Read more Southwest reviews

Flight was delayed over 3 hours. Planes were dirty. Staff indifferent. And they serve vegan pretzels as snacks.

It was great. The gate staff were very helpful in Portland when my son forgot his rolling bag and had to go back to get it just in time to make it on the plane. We really appreciate that. Great job!

Airline is not very senior friendly. Flights are late, forcing us to run to the connecting flight. Food is awful. Wish they would go back to pretzels and peanuts. During flight, pressurization isn’t quite right and all of our ears get plugged. Everything is nickel and dime, charging for boarding, seat selection and legroom. While a screen at the desk in the gate area says check your roll on bag now for free due to space limitation, the employee at the desk will not check the bag without a $100 fee. Insane.

Kayak could’ve posted the correct gate number. Almost missed my flight.

Slow boarding, limited food and drink portions. Bad delays and turbulence

there were two flight attendants that were up front...that were the best! They get KUDOs for making my trip only fantastic. Tell them Jeff said that!

OKay. I sat in the back of the plane and it was really loud between babies and little kids, and adults who.like to talk a lot and loudly most of the flight.

Flight coming out of Buffalo was delayed, so we had to be rescheduled on another flight from Baltimore to Phoenix which means we had a long layover and got home 3.5 hours late. Shuttle to parking stopped at 10pm, so we had to pay for an Uber to the parking lot and got charged an extra day of parking since it was after midnight. Not the best experience. Long day!

Was fine, delayed and feels like southwest is always late

I don't know why flying out of Sarasota requires two plane changes.

Left /arrived on time. Decent seat space. Like the wifi/plugs and entertainment. Windows and tray table were kinda gross. Attendants didn't start snack service til 40mins before landing. Two rows before us, captain came on to say there's turbulence and recalled staff to seats. So, no drink/snack. Later, attendants didn't stop to see if we had trash nor even look our way. Felt invisible! Almost all pilot announcements were not only unintelligible, but so quiet. We had no idea what she said.

Gate agent was unhelpful for handicapped boarding. Flight attendant seemed untrained.

Free & relatively fast Wi-Fi. Would've liked a wider drink selection.

The Boarding process was great. Particularly since my wife and I require assistance. The flight attendants were amazing. We travel frequently; they honestly were a cut above. 😀

Delta does a great job with entertainment and free wifi. I can still be in touch with my colleagues while in the air.

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.

This planes staff was top tier. Everything went great and had a great flight home.

Food was great. Staff was phenomenal. Seats were a bit hard and could use a lot more entertainment options as far as movies to choose from. WiFi was good. Overall great trip.

This was an overnight flight, and in the morning they did know coffee service. How you can throw passengers in a San Francisco airport at 5:40 a.m. in the morning and not giving them Coffee is a crime.

Our flight was delayed several Times due to mechanical issues. Although I understand this may happen at times, it was very inconvenient and we had to book a hotel for an overnight stay. We were traveling with my 3-yo grandson and waiting at the airport from noon until 6:30pm with no reassurance that our next rescheduled flight would depart, we had to decide what’s best for him. A day later, I found out that I may be able to demand compensation if my flight is delayed more than 4 hours. I will hav to read the fine print next time.

The pilot had to extend the flight time from san antonio to Houston to burn off fuel. This caused a lot of unnecessary stress since we had a tight connection to Aruba. And with no other flights going to Aruba we were worried about spending a night in Houston. We had to to run to our connection because of the flight crews mistake. Not happy.

Service was professional and quick. Premium economy seat was comfortable given the class

I'm a United 1K member and have ben for 10 years. The gate agent had no control over the boarding process and had us passengers queued for hours as delays were announced. On the plane, the overhead air nozzle was broken so col over was powering through on me and the passenger next to me. Not a great experience for a million miler on United. Feel free to contact me. Josh Smigel - DM426089

Like: departed and arrived on time. Unlike: Food options for purchase allways bad, 1 of 2 of the crew members not very friendly at all. Seats and leg room aweful. At this point I am thinking on switching to AA.

Over 5 hour delay with minimal updates or ability to standby for alternative flights. During boarding and 1 hr+ wait for takeoff, seats were drenched w water from air conditioning condensation and always leftover crumbs on carpet and seats

The staff was extremely helpful and friendly at all times! They went above and beyond to get us into an earlier flight in San Diego to make our connection in SFO possible, because our original flight did actually not make it! I did so much appreciate the UA team and how they made this possible. We also didn’t have seats together on the long flight to Singapore, but they found us seats together last moment with no additional cost! Nobody sat next to us, so that we were able to sleep! Thanks to UA for improving their service and Underpricer for booking this trip! Please be careful: 1,5 hrs for transfer in San Francisco might not be enough time in the future

Our flight from JFK to Madrid was delayed. We had to go from one side of the Madrid airport (Terminal 4s to the far end of terminal 4 - Gate K98) to our gate in less than 30 minutes. Put passport control and security/baggage check and that’s very hard unless you’re Usain Bolt. I called Iberia Airlines and the telephone customer service told me that I was going to have to pay to re-book. Luckily the help desk in the airport (who was dealing with dozens of people from the same JFK-Madrid flight) did not charge us extra to reschedule to a flight 8 hours later. They also gave us a voucher for breakfast and lunch. Glad the actual person at the airport had some actual sense.

Our flight was repeatedly delayed for maintenance problems: scheduled for 9.30am, eventually delayed to 7pm! Very very inconvenient! AA should have provided a substitute plane much earlier.. On the other hand, Customer Service crew in Charlotte helped us to reach NY (LGA) by late afternoon. Thank you Patricia!! The actual flight was quick and very comfortable. As always a. excellent, professional crew. [no food on a a short hop).

The flight was peaceful, just s slight turbulence, pilots and crews were all nice and made a great job! Arrived safely in the Philippines. Thank you ya’ll!

Terrible steward... Plane was quite empty... I asked to move "back" in the plane and the steward said no... Unnecessary power trip of mediocre people.

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

There weren't enough employees at check in took awhile to get bags checked. There wasn't a wheel chair for me, I was sent to someone who turns out to work for a different airline, if My flight hadn't been delayed I probably would have missed my flight as it was, by the time I arrived at my gate, they started boarding in about 15 minutes. I don't know who took me to my gate, definitely was not the normal people who take passengers to the gate. I'm guessing she may have been in a management position. I wish I knew her name, she went beyond to help me. With that said everyone was kind, and were doing the best they could. So, I choose to say it was an Adventure, stressful start, but good. In the end went well. The situation was not only difficult for passengers but the employee's.

The staff at the check in counter was so rude. Made you feel Incompetent

Frontier scheduled a 40 minute connection in DEN. What they failed to mention was that they “close the doors” 20 mins prior to departure, which means you only have 20 mins. Not enough time. Possibly against DOT regulations. Filing complaint.

Flight was scheduled at 9:40pm. Got delayed to 10 am, the next day. crazy

The bag check, flight check-in, and onboard experience convinced my wife and me that we will actively go out of our way to avoid flying Frontier Airlines in the future. At bag check, we were informed that check-in could only be completed via the Frontier mobile app. Unfortunately, the app was extremely frustrating—sending us through repetitive, confusing loops that repeatedly forced us to decline add-on services with nearly every click. While most airline apps upsell, this one felt intentionally exhausting. As the process dragged on, we became genuinely concerned that my phone battery would die before check-in could be completed. We approached the bag check staff—who were standing together talking—and explained both our frustration and our predicament. They laughed. Later, my wife described the interaction as “gaslighting,” which felt accurate. We were then informed it would cost $25 per person simply to have our boarding passes printed. From that point forward, the tone of the experience was consistently hostile. The bag check employees were condescending and combative, behaving more like bullies than customer service staff. Unfortunately, that same attitude continued onboard. One flight attendant argued with me when I attempted to stow my backpack in the overhead bin. I explained that we had each paid $75 to check our bags specifically so we would not need to use carry-on space and could have adequate legroom. She demanded to see my ticket, pointed out that it said “no carry-on”—which I acknowledged—and I reiterated that this was precisely why we paid to check our bags. Her response was, “I don’t make the rules.” She then walked away, but not before asking if I “truly wanted to fly back to Chicago today?”—an unnecessary and unmistakable threat. It is also worth noting that despite booking our tickets together in the same transaction, we were not seated together. Upon our return to Chicago—where we could once again sit together—we compared onboard experiences. We both remarked on how unhappy the flight attendants appeared and how each of us was separately asked whether we would like to purchase a beverage. We declined. At no point was water mentioned as an option, leaving us with the clear impression that even water came at a cost—or that complimentary water, if available at all, was deliberately left unmentioned. Overall, the experience was shocking and deeply disappointing, but it was also a profound learning experience—one we will not forget and will not repeat. -Steve

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.

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

Information on your arrival and departure airports