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RKS to CAT: distance & flight time
Rock Springs (Southwest Wyoming Regional Airport) → Cascais (Cascais Airport)
4,942 mi
7,953 km · 4,294 nm
10h 9m
estimated nonstop flight time
+7h
time difference · heading northeast
See live RKS→CAT fares Phone-only fares on this route — call free
Flight time details
4,942 miles nonstop takes roughly 10h 9m gate to gate, flying northeast. Add 45–90 minutes per connection if there's no nonstop service. Remember to factor the 7-hour time gain when reading arrival times on your ticket.
The two airports
- RKS — Southwest Wyoming Regional Airport · Rock Springs, United States
- CAT — Cascais Airport · Cascais, Portugal
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 CAT
- LIS · Humberto Delgado Airport (Lisbon Portela Airport)12 mi away
- AVR · Alverca Air Base21 mi away
- QLR · Monte Real Air Base80 mi away
- BYJ · Beja Airport / Airbase89 mi away
Frequently asked questions
How far is RKS from CAT?
The flight distance from Rock Springs (RKS) to Cascais (CAT) is 4,942 miles (7,953 km, 4,294 nautical miles), measured along the great-circle route airlines actually fly.
How long is the flight from RKS to CAT?
A nonstop flight takes about 10h 9m 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 Cascais?
Cascais is 7 hours ahead of Rock Springs.
What is the cheapest way to fly from RKS to CAT?
Compare live fares online, then call CheapoTrav — our agents have unpublished consolidator fares on RKS–CAT that never appear on search engines, with no booking fees.