Need help booking?
Unpublished phone-only deals available
RKS to YSM: distance & flight time
Rock Springs (Southwest Wyoming Regional Airport) → Fort Smith (Fort Smith Airport)
1,279 mi
2,058 km · 1,111 nm
3h 15m
estimated nonstop flight time
Same time
time difference · heading north
See live RKS→YSM fares Phone-only fares on this route — call free
Flight time details
1,279 miles nonstop takes roughly 3h 15m gate to gate, flying north. Add 45–90 minutes per connection if there's no nonstop service. Both airports share the same local time, so schedules read exactly as flown.
The two airports
- RKS — Southwest Wyoming Regional Airport · Rock Springs, United States
- YSM — Fort Smith Airport · Fort Smith, Canada
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 RKS
- FBR · Fort Bridger Airport71 mi away
- VEL · Vernal Regional Airport83 mi away
- LND · Hunt Field86 mi away
- BPI · Miley Memorial Field87 mi away
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
Frequently asked questions
How far is RKS from YSM?
The flight distance from Rock Springs (RKS) to Fort Smith (YSM) is 1,279 miles (2,058 km, 1,111 nautical miles), measured along the great-circle route airlines actually fly.
How long is the flight from RKS to YSM?
A nonstop flight takes about 3h 15m 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 cheapest way to fly from RKS to YSM?
Compare live fares online, then call CheapoTrav — our agents have unpublished consolidator fares on RKS–YSM that never appear on search engines, with no booking fees.