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.

Month	Temperature	Demand	Weekly Flights	Average one-way Fare
January	25.5°F (-3.6°C)	Low	11	$310
February	26.1°F (-3.3°C)	Average	12	$322
March	34.3°F (1.3°C)	Average	14	$297
April	45.0°F (7.2°C)	Average	13	$288
May	57.7°F (14.3°C)	Average	21	$238
June	66.0°F (18.9°C)	High	21	$275
July	72.0°F (22.2°C)	High	30	$271
August	70.7°F (21.5°C)	High	34	$282
September	64.6°F (18.1°C)	Average	21	$272
October	53.2°F (11.8°C)	Average	21	$260
November	41.4°F (5.2°C)	Low	15	$323
December	33.1°F (0.6°C)	Low	16	$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.