Need help booking?
Unpublished phone-only deals available
BFI to IAG: distance & flight time
Seattle (Boeing Field King County International Airport) → Niagara Falls (Niagara Falls International Airport)
2,101 mi
3,381 km · 1,825 nm
4h 35m
estimated nonstop flight time
+3h
time difference · heading east
See live BFI→IAG fares Phone-only fares on this route — call free
Flight time details
2,101 miles nonstop takes roughly 4h 35m 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
- BFI — Boeing Field King County International Airport · Seattle, United States
- IAG — Niagara Falls International Airport · Niagara Falls, 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 BFI
- SEA · Seattle Tacoma International Airport6 mi away
- RNT · Renton Municipal Airport5 mi away
- PWT · Bremerton National Airport22 mi away
- TIW · Tacoma Narrows Airport22 mi away
Near IAG
- YYZ · Lester B. Pearson International Airport52 mi away
- YCM · Niagara District Airport13 mi away
- BUF · Buffalo Niagara International Airport16 mi away
- DU9 · Dunnville Airport37 mi away
Frequently asked questions
How far is BFI from IAG?
The flight distance from Seattle (BFI) to Niagara Falls (IAG) is 2,101 miles (3,381 km, 1,825 nautical miles), measured along the great-circle route airlines actually fly.
How long is the flight from BFI to IAG?
A nonstop flight takes about 4h 35m gate to gate. Actual time varies with winds, routing and season — eastbound transatlantic flights, for example, are usually faster than the return.
Are there nonstop flights from BFI to IAG?
Nonstop service on BFI–IAG depends on the season and the day of week. Run the fare search on this page with the nonstop filter applied to see current direct options; when there is no nonstop, a single connection through a carrier hub adds roughly 2–4 hours to the 4h 35m nonstop estimate.
What is the time difference between Seattle and Niagara Falls?
Niagara Falls is 3 hours ahead of Seattle.
What is the cheapest way to fly from BFI to IAG?
Compare live fares online, then call CheapoTrav — our agents have unpublished consolidator fares on BFI–IAG that never appear on search engines, with no booking fees.
Why are some BFI to IAG fares phone-only?
Consolidator contracts let us sell certain BFI–IAG tickets below the price airlines permit us to publish online, so those fares can only be quoted over the phone. Call the travel desk and an agent will check phone-only inventory for your dates.