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GAI to CPR: distance & flight time
Gaithersburg (Montgomery County Airpark) → Casper (Casper-Natrona County International Airport)
1,541 mi
2,479 km · 1,339 nm
3h 29m
estimated nonstop flight time
-2h
time difference · heading west
See live GAI→CPR fares Phone-only fares on this route — call free
Flight time details
1,541 miles nonstop takes roughly 3h 29m gate to gate, flying west. Add 45–90 minutes per connection if there's no nonstop service. Remember to factor the 2-hour time set-back when reading arrival times on your ticket.
The two airports
- GAI — Montgomery County Airpark · Gaithersburg, United States
- 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 GAI
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 GAI from CPR?
The flight distance from Gaithersburg (GAI) to Casper (CPR) is 1,541 miles (2,479 km, 1,339 nautical miles), measured along the great-circle route airlines actually fly.
How long is the flight from GAI to CPR?
A nonstop flight takes about 3h 29m 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 Gaithersburg and Casper?
Casper is 2 hours behind Gaithersburg.
What is the cheapest way to fly from GAI to CPR?
Compare live fares online, then call CheapoTrav — our agents have unpublished consolidator fares on GAI–CPR that never appear on search engines, with no booking fees.