Need help booking?
Unpublished phone-only deals available
RER to CPR: distance & flight time
Retalhuleu (Retalhuleu Airport) → Casper (Casper-Natrona County International Airport)
2,148 mi
3,457 km · 1,867 nm
4h 41m
estimated nonstop flight time
Same time
time difference · heading north
See live RER→CPR fares Phone-only fares on this route — call free
Flight time details
2,148 miles nonstop takes roughly 4h 41m 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
- RER — Retalhuleu Airport · Retalhuleu, Guatemala
- CPR — Casper-Natrona County International Airport · Casper, 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 RER
- AAZ · Quezaltenango Airport27 mi away
- TAP · Tapachula International Airport49 mi away
- AQB · Santa Cruz del Quiche Airport50 mi away
- GSJ · San José Airport70 mi away
Near CPR
- RWL · Rawlins Municipal Airport/Harvey Field85 mi away
- RIW · Riverton Regional Airport101 mi away
- SAA · Shively Field103 mi away
- WRL · Worland Municipal Airport104 mi away
Frequently asked questions
How far is RER from CPR?
The flight distance from Retalhuleu (RER) to Casper (CPR) is 2,148 miles (3,457 km, 1,867 nautical miles), measured along the great-circle route airlines actually fly.
How long is the flight from RER to CPR?
A nonstop flight takes about 4h 41m 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 RER to CPR?
Compare live fares online, then call CheapoTrav — our agents have unpublished consolidator fares on RER–CPR that never appear on search engines, with no booking fees.