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YSM to SEA: distance & flight time
Fort Smith (Fort Smith Airport) → Seattle (Seattle Tacoma International Airport)
963 mi
1,551 km · 837 nm
2h 34m
estimated nonstop flight time
-1h
time difference · heading southwest
See live YSM→SEA fares Phone-only fares on this route — call free
Flight time details
963 miles nonstop takes roughly 2h 34m gate to gate, flying southwest. Add 45–90 minutes per connection if there's no nonstop service. Remember to factor the 1-hour time set-back when reading arrival times on your ticket.
The two airports
- YSM — Fort Smith Airport · Fort Smith, Canada
- SEA — Seattle Tacoma International Airport · Seattle, 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 YSM
- YPY · Fort Chipewyan Airport92 mi away
- YFR · Fort Resolution Airport99 mi away
- YBE · Uranium City Airport125 mi away
- YHY · Hay River / Merlyn Carter Airport142 mi away
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
Frequently asked questions
How far is YSM from SEA?
The flight distance from Fort Smith (YSM) to Seattle (SEA) is 963 miles (1,551 km, 837 nautical miles), measured along the great-circle route airlines actually fly.
How long is the flight from YSM to SEA?
A nonstop flight takes about 2h 34m 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 Fort Smith and Seattle?
Seattle is 1 hour behind Fort Smith.
What is the cheapest way to fly from YSM to SEA?
Compare live fares online, then call CheapoTrav — our agents have unpublished consolidator fares on YSM–SEA that never appear on search engines, with no booking fees.