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RKS to FSD: distance & flight time
Rock Springs (Southwest Wyoming Regional Airport) → Sioux Falls (Joe Foss Field Airport)
641 mi
1,032 km · 557 nm
1h 52m
estimated nonstop flight time
+1h
time difference · heading east
See live RKS→FSD fares Phone-only fares on this route — call free
Flight time details
641 miles nonstop takes roughly 1h 52m gate to gate, flying east. Add 45–90 minutes per connection if there's no nonstop service. Remember to factor the 1-hour time gain when reading arrival times on your ticket.
The two airports
- RKS — Southwest Wyoming Regional Airport · Rock Springs, United States
- FSD — Joe Foss Field Airport · Sioux 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 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 FSD
- YKN · Chan Gurney Municipal Airport56 mi away
- MHE · Mitchell Municipal Airport66 mi away
- SPW · Spencer Municipal Airport82 mi away
- SUX · Sioux Gateway Col. Bud Day Field83 mi away
Frequently asked questions
How far is RKS from FSD?
The flight distance from Rock Springs (RKS) to Sioux Falls (FSD) is 641 miles (1,032 km, 557 nautical miles), measured along the great-circle route airlines actually fly.
How long is the flight from RKS to FSD?
A nonstop flight takes about 1h 52m 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 Rock Springs and Sioux Falls?
Sioux Falls is 1 hour ahead of Rock Springs.
What is the cheapest way to fly from RKS to FSD?
Compare live fares online, then call CheapoTrav — our agents have unpublished consolidator fares on RKS–FSD that never appear on search engines, with no booking fees.