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$156 Cheap Flights from Seattle (SEA) to Buffalo (BUF)

View $156 flight on Wed, Oct 14, 2026Opens in a new window

Popular airlines from Seattle-Tacoma International Airport (SEA) to Buffalo Niagara Intl. Airport (BUF)

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Cheap Flights from Seattle to Buffalo (SEA-BUF)

Prices were available within the past 7 days and start at $156 for one-way flights and $308 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Southwest Airlines
Thu, Sep 10 - Fri, Sep 11
SEA
Seattle
BUF
Buffalo
$308 Roundtrip, found 3 hours ago
$308
Roundtrip
found 3 hours ago
Select Southwest Airlines flight, departing Thu, Sep 10 from Seattle to Buffalo, returning Fri, Sep 11, priced at $308 found 3 hours ago
Southwest Airlines
Wed, Oct 14 - Mon, Oct 19
SEA
Seattle
BUF
Buffalo
$312 Roundtrip, found 3 hours ago
$312
Roundtrip
found 3 hours ago
Select Southwest Airlines flight, departing Wed, Oct 14 from Seattle to Buffalo, returning Mon, Oct 19, priced at $312 found 3 hours ago
Southwest Airlines
Thu, Oct 22 - Mon, Oct 26
SEA
Seattle
BUF
Buffalo
$318 Roundtrip, found 5 hours ago
$318
Roundtrip
found 5 hours ago
Select Southwest Airlines flight, departing Thu, Oct 22 from Seattle to Buffalo, returning Mon, Oct 26, priced at $318 found 5 hours ago
Southwest Airlines
Thu, Oct 22 - Mon, Oct 26
SEA
Seattle
BUF
Buffalo
$323 Roundtrip, found 5 hours ago
$323
Roundtrip
found 5 hours ago
Select Southwest Airlines flight, departing Thu, Oct 22 from Seattle to Buffalo, returning Mon, Oct 26, priced at $323 found 5 hours ago
American Airlines
Sat, Sep 5 - Fri, Sep 11
SEA
Seattle
BUF
Buffalo
$335 Roundtrip, found 3 hours ago
$335
Roundtrip
found 3 hours ago
Select American Airlines flight, departing Sat, Sep 5 from Seattle to Buffalo, returning Fri, Sep 11, priced at $335 found 3 hours ago
Southwest Airlines
Thu, Sep 10 - Fri, Sep 11
SEA
Seattle
BUF
Buffalo
$340 Roundtrip, found 3 hours ago
$340
Roundtrip
found 3 hours ago
Select Southwest Airlines flight, departing Thu, Sep 10 from Seattle to Buffalo, returning Fri, Sep 11, priced at $340 found 3 hours ago
Southwest Airlines
Thu, Sep 10 - Thu, Oct 1
SEA
Seattle
BUF
Buffalo
$350 Roundtrip, found 1 hour ago
$350
Roundtrip
found 1 hour ago
Select Southwest Airlines flight, departing Thu, Sep 10 from Seattle to Buffalo, returning Thu, Oct 1, priced at $350 found 1 hour ago
United
Sat, Sep 5 - Sun, Sep 6
SEA
Seattle
BUF
Buffalo
$362 Roundtrip, found 2 days ago
$362
Roundtrip
found 2 days ago
Select United flight, departing Sat, Sep 5 from Seattle to Buffalo, returning Sun, Sep 6, priced at $362 found 2 days ago
Delta
Sat, Sep 5 - Fri, Sep 11
SEA
Seattle
BUF
Buffalo
$367 Roundtrip, found 3 hours ago
$367
Roundtrip
found 3 hours ago
Select Delta flight, departing Sat, Sep 5 from Seattle to Buffalo, returning Fri, Sep 11, priced at $367 found 3 hours ago
JetBlue Airways
Thu, Sep 3 - Thu, Sep 24
SEA
Seattle
BUF
Buffalo
$408 Roundtrip, found 1 hour ago
$408
Roundtrip
found 1 hour ago
Select JetBlue Airways flight, departing Thu, Sep 3 from Seattle to Buffalo, returning Thu, Sep 24, priced at $408 found 1 hour ago

Alternative airports near Buffalo

Prices were available within the past 7 days. Prices and availability are subject to change.

Select flight to Buffalo Niagara Intl. BUF. Cheapest and Closest option available. Average driving time to city center is 16 minutes. Flights from $657
BUF
Buffalo Niagara Intl.
CheapestClosest
Average driving time to city center16 min
Flights from $657

Find the cheapest month to fly from Seattle (SEA) to Buffalo (BUF)

September is typically the cheapest month to fly

From $277 - $429 per traveler.

What you need to know for your flight from Seattle - Tacoma Intl. to Buffalo Niagara Intl.

Seattle (SEA) to Buffalo (BUF) at a glance

Travel between Seattle (SEA) and Buffalo (BUF) with a range of airlines offering weekly flights on this short domestic route. Use a flight finder to compare options from both full-service and low-cost carriers, ensuring you find an itinerary that aligns with your budget and schedule. As you plan your journey to explore Buffalo's renowned attractions and neighborhoods, gather all the essential details for flights from Seattle-Tacoma International Airport (SEA) to Buffalo Niagara International Airport (BUF).

  • Fastest flight duration: around 6h 30m non-stop
  • Route distance: roughly 2,100 miles (3,380 km)
  • Flights per week: around 15+ flights with multiple daily departures on average
  • Typical fares (one-way): economy tickets often range from $130–$505, depending on seasonality and how far ahead you book

Flights from Seattle - Tacoma International Airport (SEA) to Buffalo Niagara International Airport (BUF)

According to recent traveler bookings, here are the top airlines preferred for flights from Seattle to Buffalo, especially for those looking at one-stop and multi-stop options. Popular layover locations include O'Hare International Airport (ORD) with a layover of about 1 hour and 15 minutes, Detroit Metropolitan Wayne County Airport (DTW) with roughly a 1-hour layover, and Midway International Airport (MDW) with an estimated layover of 1 hour and 45 minutes. This variety allows you to combine factors like price, total travel time, and cabin class to craft the perfect itinerary.

  • United: As a full-service airline, United provides both non-stop and one-stop options, with one-way prices usually falling between $145 and $545. It represents about 28% of flights on this route, featuring a typical in-flight duration of 5 hours 45 minutes and a total travel time of around 7 hours 15 minutes.
  • American Airlines: This full-service airline offers one-stop travel, with one-way fares generally ranging from $135 to $525. American Airlines accounts for approximately 27% of departures on this route, boasting an in-flight time of 5 hours 45 minutes and a total journey time of about 7 hours 15 minutes including layovers.
  • Delta: Delta, another full-service carrier, provides one-stop flights with one-way fares typically between $150 and $535. It operates about 19% of the flights on this route. Passengers can expect an in-flight duration of 5 hours 45 minutes, with the entire journey taking roughly 7 hours 15 minutes, including layover time.
  • Southwest Airlines: This budget-friendly airline offers both one-stop and multi-stop services, with one-way fares generally ranging from $160 to $480. Southwest Airlines makes up about 14% of departures along this route, with an average in-flight time of 5 hours 45 minutes and a total travel time of approximately 7 hours 15 minutes.
  • JetBlue Airways: As a low-cost carrier, JetBlue provides one-stop flights with one-way fares typically ranging from $130 to $385. It accounts for around 6% of departures on this route, featuring an in-flight duration of 5 hours 45 minutes and a total journey time of roughly 7 hours 15 minutes, including layovers.

Travelers flying from Seattle to Buffalo have the option to enhance their experience with upgrades. American Airlines and United both offer first-class service, while Delta provides the choice of first class or premium economy for added comfort during the journey.

Best time to fly from Seattle (SEA) to Buffalo (BUF)

The most popular months for travelers flying from Seattle to Buffalo are June, July, and August, when peak temperatures in Buffalo reach up to 72°F in July. If you prefer quieter travel, consider January, the least busy and relatively cheaper time to visit with fewer crowds and temperatures around 25.5°F. For better deals, May usually offers the lowest average one-way fare around $238. Flight availability peaks in August, with approximately 34 flights per week, making it easier to find convenient departure times.

  • Cheapest time to fly: May usually offers good deals with average one-way fare around $238, roughly 17% cheaper than the yearly average.
  • Another budget-friendly time to fly: October typically offers an average one-way fare of around $260.
  • Most flight options: August has the highest number of flights from Seattle to Buffalo, with approximately 34 flights per week, giving you more flexibility in scheduling your trip.
calendar iconMonthtemperature iconTemperaturecrowd level iconDemandflights iconWeekly Flightsprice iconAverage one-way Fare
January25.5°F (-3.6°C)Low11$310
February26.1°F (-3.3°C)Average12$322
March34.3°F (1.3°C)Average14$297
April45.0°F (7.2°C)Average13$288
May57.7°F (14.3°C)Average21$238
June66.0°F (18.9°C)High21$275
July72.0°F (22.2°C)High30$271
August70.7°F (21.5°C)High34$282
September64.6°F (18.1°C)Average21$272
October53.2°F (11.8°C)Average21$260
November41.4°F (5.2°C)Low15$323
December33.1°F (0.6°C)Low16$324

*Average one-way fare is based on Expedia flight booking data from January 2025 to April 2026 for the specified route and travel class and may change depending on availability, dates, and demand.

Alternative route from Seattle (SEA) to Buffalo (BUF)

  • Seattle to Rochester (SEA-ROC): Greater Rochester International Airport (ROC) is located roughly 56 miles from Buffalo Niagara International Airport (BUF). One-way economy ticket prices for this route generally fall between $110 and $460, influenced by seasonal demand and advance booking. Travelers can choose from one-stop or multi-stop flights, with frequent layovers at O'Hare International Airport (ORD) and Detroit Metropolitan Wayne County Airport (DTW). Major airlines operating on this route include United and American Airlines. Additionally, options for business and first-class seater service are also available.

How to find the best prices for flights from Seattle (SEA) to Buffalo (BUF)

Getting some of the best deals on flights from Seattle to Buffalo is all about timing and flexibility. Here are some key tips to help you save:

  1. Best times to book and fly: cheaper fares are usually found when booking 2 to 8 weeks in advance, which coincides with when most travelers make their reservations. Early morning departures (12 am to 5 am) often offer lower prices, while morning flights (5 am to 12 pm) are the most popular. Additionally, flying on Tuesday typically provides both cheaper fares and a high volume of travelers.
  2. Set up price alerts: stay updated on price changes by using Expedia's Price Tracker. Receive alerts when fares drop for your selected route.
  3. Bundle and save: bundle your flight and hotel to save on Expedia, or unlock a hotel deal after booking your flight.*
  4. Compare flight options: use Expedia's search tool to compare airlines, routes, direct vs. non-direct flights, and flight times. You can also sort by price to find the most affordable options.
  5. Stay flexible with dates: being open to different travel days can sometimes help you find better prices on flights and hotels.
  6. Think about luggage: nowadays, it's important to check the airline's baggage policies to find the best value. That may be paying for an additional carry-on bag or booking a ticket with checked luggage included. Either way, double-check your allowance before confirming your booking to avoid excess baggage fees at the airport.

*Members only. Savings vary and are not available on all bundles. Select hotels.

Arriving at Buffalo Niagara International Airport from Seattle - Tacoma International Airport

Buffalo welcomes travelers from Seattle with a range of transport options based on price, convenience, and proximity. For departures, Seattle - Tacoma International Airport is roughly a 20-minute drive (covering about 14 miles) from central Seattle. Here's how to reach Buffalo efficiently:

  • Hotel transfer: Transfers offer a convenient way to reach your hotel in Buffalo, with private rides that can be arranged in advance.
  • Car rental: Renting a car from Buffalo Niagara International Airport is a great option if you plan to explore and sightsee beyond the city. Browse cheap car rentals at Buffalo Niagara International Airport on Expedia.
  • Taxi/ride-hailing: Taxis and ride-hailing services may be available from designated pickup areas outside the terminal, check locally on arrival.
  • Public transportation: From Buffalo Niagara International Airport, Buffalo-Depew Station, a train station, is located about 2.6 miles away by car, while University Station, a metro station, is about 6.5 miles away by car, providing convenient transport options for travelers.

Frequently asked questions

How much does a flight from Seattle, WA (SEA-Seattle - Tacoma Intl.) to Buffalo, NY (BUF-Buffalo Niagara Intl.) cost?
You can find cheap one-way flights from $156 and cheap return flights from $308 Seattle, WA (SEA-Seattle - Tacoma Intl.) to Buffalo, NY (BUF-Buffalo Niagara Intl.) with Expedia. One-way flights typically cost between $209 and $1518, and return flights often range between $422 and $1512. Flight prices vary based on the month and day of the week you want to travel, as well as the airline and how far in advance you book your ticket. Filter your search on Expedia by "Price (lowest to highest)" to see the cheapest fares first, and use the Price Tracking tool to receive alerts when Seattle, WA (SEA-Seattle - Tacoma Intl.) to Buffalo, NY (BUF-Buffalo Niagara Intl.) ticket fares go up or down.*Typical price ranges based on flights available on Expedia in the last year. Prices include multi-airline options.
What is the cheapest month to fly from Seattle, WA (SEA-Seattle - Tacoma Intl.) to Buffalo, NY (BUF-Buffalo Niagara Intl.)?
The cheapest month to fly from SEA to BUF is September when demand is low. Traveling in off-peak or shoulder months is usually a good way to secure cheap tickets, just remember to avoid flying during holidays if you're able to. Use the calendar view in your search to see which months have low fares on this route.
Which airlines fly direct from Seattle, WA (SEA-Seattle - Tacoma Intl.) to Buffalo, NY (BUF-Buffalo Niagara Intl.)?
Enter SEA to BUF and your travel dates, then apply the 'Nonstop' filter to see only direct flights.
What is the cheapest airline that flies from Seattle, WA (SEA-Seattle - Tacoma Intl.) to Buffalo, NY (BUF-Buffalo Niagara Intl.)?
Frontier Airlines is one of the cheapest airlines offering connecting flights from Seattle, WA (SEA) to Buffalo, NY (BUF), with round-trip tickets starting from around $282.11 with a layover in Denver Intl. (DEN). Use Expedia's search tool to compare the prices and schedules of airlines that fly this route to find the best option for your plans and budget.*Prices based on flights available on Expedia in the last year.
How do I find cheap flights from Seattle, WA (SEA-Seattle - Tacoma Intl.) to Buffalo, NY (BUF-Buffalo Niagara Intl.)?
To find a cheap flight from Seattle, WA (SEA-Seattle - Tacoma Intl.) to Buffalo, NY (BUF-Buffalo Niagara Intl.), be flexible with your dates. Traveling outside of peak vacation months and booking a mid-week flight can help you save. Early morning and late night flights are often more affordable, too. Expedia allows you to compare flight times, airlines and routes all in one place to find low fares. You can also set up Price Tracking and receive alerts when fares go up or down.
What is the best time to fly from Seattle, WA (SEA-Seattle - Tacoma Intl.) to Buffalo, NY (BUF-Buffalo Niagara Intl.)?
The best time to fly is usually mid-week (Tuesday or Wednesday) and during early morning hours as flights tend to be cheaper, less crowded, and generally more on-time. Avoid major holidays and peak vacation seasons for smoother travel. Combining off-peak days and hours often gives the best combination of cost, comfort, and convenience.
What is the earliest flight from Seattle, WA (SEA-Seattle - Tacoma Intl.) to Buffalo, NY (BUF-Buffalo Niagara Intl.)?
The earliest flight from Seattle (SEA) to Buffalo (BUF) typically departs at around 12:05 AM, operated by American Airlines. This seasonal service is available in February, allowing you to maximize your time in Buffalo. To compare early flights on Expedia, select the "Early Morning" and "Morning" filters in your search.
What are the most popular departure times for flights from Seattle, WA (SEA-Seattle - Tacoma Intl.) to Buffalo, NY (BUF-Buffalo Niagara Intl.)?
The most popular departure times for flights from Seattle, WA (SEA) to Buffalo, NY (BUF) are in the early morning, from 6am to 9am. About 33% of passengers prefer this time window. Many major carriers, including United Airlines, American Airlines, and Delta, offer flights during this window. This timing works well because it lets you maximize your day in Buffalo after arriving in the morning.
How long does it take to fly from Seattle, WA (SEA-Seattle - Tacoma Intl.) to Buffalo, NY (BUF-Buffalo Niagara Intl.)?
A flight from SEA to BUF with a layover takes around 8 hours 20 minutes, with the route covering approximately 2,116 miles. Keep in mind that actual flight times can vary due to wind patterns, weather, and air traffic.
Can you fly business or first class from Seattle, WA (SEA-Seattle - Tacoma Intl.) to Buffalo, NY (BUF-Buffalo Niagara Intl.)?
Business class seats are offered on the SEA to BUF route with American Airlines.First class cabins are available on:

  • American Airlines
  • United Airlines
  • Delta Air Lines

How do I earn miles on a Seattle, WA (SEA-Seattle - Tacoma Intl.) to Buffalo, NY (BUF-Buffalo Niagara Intl.) flight with Expedia?
It's easy to earn miles on a Seattle, WA (SEA-Seattle - Tacoma Intl.) to Buffalo, NY (BUF-Buffalo Niagara Intl.) flight when you book with Expedia. Before you confirm your booking, simply select your frequent flyer program and enter your program number. As a member of One Key™, you can also earn OneKeyCash™* on top of your airline miles when you book with Expedia.*Excludes taxes and fees. OneKeyCash is not redeemable for cash and can only be used on Expedia and other participating brands.
What airports do you fly into for Buffalo from Seattle - Tacoma Intl. (SEA)?
If you're planning to travel to Buffalo from Seattle - Tacoma Intl. (SEA), you can fly into Buffalo Niagara Intl. (BUF) Some flights may connect through major hubs like Denver Intl. (DEN), Sky Harbor Intl. (PHX), Dallas-Fort Worth Intl. (DFW) before reaching Buffalo. Compare routes and airports on Expedia to find the best flight options for your travel plans.
Is it cheaper to buy a plane ticket from Seattle, WA (SEA-Seattle - Tacoma Intl.) to Buffalo, NY (BUF-Buffalo Niagara Intl.) at the last minute?
Typically, booking a last minute flight from Seattle, WA (SEA-Seattle - Tacoma Intl.) to Buffalo, NY (BUF-Buffalo Niagara Intl.) will be more expensive than booking in advance. As the departure date approaches, there are usually fewer seats available which can drive up the cost. However, if there's some wiggle room with your travel dates and times, you could bag a cheap last-minute fare.
Is it cheaper to book a Seattle, WA (SEA-Seattle - Tacoma Intl.) to Buffalo, NY (BUF-Buffalo Niagara Intl.) flight and hotel package?
Securing a Seattle, WA (SEA-Seattle - Tacoma Intl.) to Buffalo, NY (BUF-Buffalo Niagara Intl.) Buffalo Vacation Packages is usually cheaper than booking separately. With Expedia, you can enjoy the ease of organizing your travels all in one place. Select from our extensive range of stays and then add flights, activities and car rentals to your booking. Bundle everything together, and you could save hundreds of dollars.
Can I cancel or change the date of my flight from Seattle, WA (SEA-Seattle - Tacoma Intl.) to Buffalo, NY (BUF-Buffalo Niagara Intl.)?
If you booked your Seattle, WA (SEA-Seattle - Tacoma Intl.) to Buffalo, NY (BUF-Buffalo Niagara Intl.) flight within the last 24 hours, you may be able to modify or cancel it without any fees. Depending on the airline and the type of ticket you have, additional charges may apply for changes beyond this timeframe. Airline policies and contact information can be found in your itinerary or confirmation email. Or, head to our Customer Service portal if you'd like more information.

Travel information

Origin airport
Seattle - Tacoma Intl.
Destination airport
Buffalo Niagara Intl.
Airlines serving
Alaska Airlines, American Airlines, Delta, JetBlue Airways, Southwest Airlines, United
Roundtrip price
$308
Distance
2116 mi

Book with confidence

Seattle to Buffalo Flights

The cheapest times to fly from Seattle to Buffalo

On average, Thursday can be the cheapest time to fly, according to data from the Airlines Reporting Corporation (ARC), one of the world's biggest databases for global airline sales. The data reveals that you could save up to 16% by flying on a Thursday—the cheapest day to travel on average—instead of a Sunday—the most expensive. Some of the most affordable flights from Seattle to Buffalo are during the month of September. You can find some of the cheapest flights from Seattle to Buffalo with Expedia's search tool and vast selection of airlines.

 

The best time to book a flight from Seattle to Buffalo

Sunday is one of the best days to book for cheap flights from Seattle to Buffalo: Tickets reserved on a Sunday cost between 6% and 13% less than those reserved on a Friday, according to ARC data. The data also suggests booking early can also lead to cheaper airfares. You could save 24% by buying your tickets for domestic flights at least a month in advance and 10% by booking international flights 2 months in advance.

 

How to find cheap round-trip tickets from Seattle to Buffalo

Being flexible with your dates and using Expedia's Price Drop Protection and Price Tracking features are some of the best ways of finding a cheap ticket from Seattle to Buffalo in 2026. You can also book with separate airlines for your outbound and return journeys, from $156 one-way. Expedia also offers Price Drop Protection, so if the cost of your airfare goes down after booking, you'll receive a credit for the difference*. This is available for a small fee, and is free to One Key Gold and Platinum tier members.

 

Expedia's Price Tracking feature means you can stay on top of airfares without manually checking every day. It sends you automated price alerts for cheap Seattle to Buffalo flights and uses historical data to indicate when the best time to book is. Download Expedia's free app to activate this handy tool in a few easy taps.

 

You could also save big by booking one of Expedia's vacation packages. Bundling together your Seattle to Buffalo airfare with your accommodations and car rental is often cheaper than booking everything separately. There’s also One Key, Expedia's generous rewards program. Join for free and you could earn One Key cash on most bookings to save on future adventures.

 

*Terms apply.

 

Disclaimer: ARC The statistics are based on average round-trip ticket prices between January and August 2023. The percentages you see are averages.

 

Seattle to Buffalo Flights

*Flight schedules are subject to change.

*Available to One Key members.

 

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