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IAD to CPR: distance & flight time
Washington (Washington Dulles International Airport) → Casper (Casper-Natrona County International Airport)
1,531 mi
2,464 km · 1,330 nm
3h 28m
estimated nonstop flight time
-2h
time difference · heading west
See live IAD→CPR fares Phone-only fares on this route — call free
Flight time details
1,531 miles nonstop takes roughly 3h 28m 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
- IAD — Washington Dulles International Airport · Washington, 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 IAD
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 IAD from CPR?
The flight distance from Washington (IAD) to Casper (CPR) is 1,531 miles (2,464 km, 1,330 nautical miles), measured along the great-circle route airlines actually fly.
How long is the flight from IAD to CPR?
A nonstop flight takes about 3h 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 Washington and Casper?
Casper is 2 hours behind Washington.
What is the cheapest way to fly from IAD to CPR?
Compare live fares online, then call CheapoTrav — our agents have unpublished consolidator fares on IAD–CPR that never appear on search engines, with no booking fees.