Need help booking?
Unpublished phone-only deals available
SEA to BUF: distance & flight time
Seattle (Seattle Tacoma International Airport) → Buffalo (Buffalo Niagara International Airport)
2,116 mi
3,406 km · 1,839 nm
4h 37m
estimated nonstop flight time
+3h
time difference · heading east
See live SEA→BUF fares Phone-only fares on this route — call free
Flight time details
2,116 miles nonstop takes roughly 4h 37m gate to gate, flying east. Add 45–90 minutes per connection if there's no nonstop service. Remember to factor the 3-hour time gain when reading arrival times on your ticket.
The two airports
- SEA — Seattle Tacoma International Airport · Seattle, United States
- BUF — Buffalo Niagara International Airport · Buffalo, United States
Distances are great-circle ("as the crow flies") — the same basis airlines use for frequent-flyer miles.
Alternate airports can cut this fare
Flying from or into a nearby airport is the #1 trick our agents use to beat online prices. Call and we'll compare every combination on one call.
Near SEA
- RNT · Renton Municipal Airport5 mi away
- BFI · Boeing Field King County International Airport6 mi away
- TIW · Tacoma Narrows Airport18 mi away
- PWT · Bremerton National Airport21 mi away
Near BUF
- IAG · Niagara Falls International Airport16 mi away
- YYZ · Lester B. Pearson International Airport68 mi away
- YCM · Niagara District Airport28 mi away
- DKK · Chautauqua County-Dunkirk Airport41 mi away
Frequently asked questions
How far is SEA from BUF?
The flight distance from Seattle (SEA) to Buffalo (BUF) is 2,116 miles (3,406 km, 1,839 nautical miles), measured along the great-circle route airlines actually fly.
How long is the flight from SEA to BUF?
A nonstop flight takes about 4h 37m gate to gate. Actual time varies with winds, routing and season — eastbound transatlantic flights, for example, are usually faster than the return.
What is the time difference between Seattle and Buffalo?
Buffalo is 3 hours ahead of Seattle.
What is the cheapest way to fly from SEA to BUF?
Compare live fares online, then call CheapoTrav — our agents have unpublished consolidator fares on SEA–BUF that never appear on search engines, with no booking fees.