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BIR to CPR: distance & flight time
Biratnagar (Biratnagar Airport) → Casper (Casper-Natrona County International Airport)
7,564 mi
12,172 km · 6,573 nm
15h 18m
estimated nonstop flight time
-11.7h
time difference · heading north
See live BIR→CPR fares Phone-only fares on this route — call free
Flight time details
7,564 miles nonstop takes roughly 15h 18m gate to gate, flying north. Add 45–90 minutes per connection if there's no nonstop service. Remember to factor the 11.7-hour time set-back when reading arrival times on your ticket.
The two airports
- BIR — Biratnagar Airport · Biratnagar, Nepal
- 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 BIR
- RJB · Rajbiraj Airport33 mi away
- BHP · Bhojpur Airport48 mi away
- BDP · Bhadrapur Airport51 mi away
- TMI · Tumling Tar Airport58 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 BIR from CPR?
The flight distance from Biratnagar (BIR) to Casper (CPR) is 7,564 miles (12,172 km, 6,573 nautical miles), measured along the great-circle route airlines actually fly.
How long is the flight from BIR to CPR?
A nonstop flight takes about 15h 18m 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 Biratnagar and Casper?
Casper is 11.7 hours behind Biratnagar.
What is the cheapest way to fly from BIR to CPR?
Compare live fares online, then call CheapoTrav — our agents have unpublished consolidator fares on BIR–CPR that never appear on search engines, with no booking fees.