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BIR to WBU: distance & flight time
Biratnagar (Biratnagar Airport) → Boulder (Boulder Municipal Airport)
7,771 mi
12,506 km · 6,753 nm
15h 42m
estimated nonstop flight time
-11.7h
time difference · heading north
See live BIR→WBU fares Phone-only fares on this route — call free
Flight time details
7,771 miles nonstop takes roughly 15h 42m 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
- WBU — Boulder Municipal Airport · Boulder, 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 WBU
- DEN · Denver International Airport32 mi away
- BJC · Rocky Mountain Metropolitan Airport11 mi away
- FNL · Northern Colorado Regional Airport31 mi away
- BFK · Buckley Air Force Base34 mi away
Frequently asked questions
How far is BIR from WBU?
The flight distance from Biratnagar (BIR) to Boulder (WBU) is 7,771 miles (12,506 km, 6,753 nautical miles), measured along the great-circle route airlines actually fly.
How long is the flight from BIR to WBU?
A nonstop flight takes about 15h 42m 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 Boulder?
Boulder is 11.7 hours behind Biratnagar.
What is the cheapest way to fly from BIR to WBU?
Compare live fares online, then call CheapoTrav — our agents have unpublished consolidator fares on BIR–WBU that never appear on search engines, with no booking fees.