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RCA to CAT: distance & flight time
Rapid City (Ellsworth Air Force Base) → Cascais (Cascais Airport)
4,593 mi
7,392 km · 3,991 nm
9h 28m
estimated nonstop flight time
+7h
time difference · heading northeast
See live RCA→CAT fares Phone-only fares on this route — call free
Flight time details
4,593 miles nonstop takes roughly 9h 28m 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
- RCA — Ellsworth Air Force Base · Rapid City, 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 RCA
- RAP · Rapid City Regional Airport7 mi away
- SPF · Black Hills Airport-Clyde Ice Field41 mi away
- CDR · Chadron Municipal Airport90 mi away
- GCC · Gillette Campbell County Airport121 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 RCA from CAT?
The flight distance from Rapid City (RCA) to Cascais (CAT) is 4,593 miles (7,392 km, 3,991 nautical miles), measured along the great-circle route airlines actually fly.
How long is the flight from RCA to CAT?
A nonstop flight takes about 9h 28m 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 Rapid City and Cascais?
Cascais is 7 hours ahead of Rapid City.
What is the cheapest way to fly from RCA to CAT?
Compare live fares online, then call CheapoTrav — our agents have unpublished consolidator fares on RCA–CAT that never appear on search engines, with no booking fees.