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SPF to BIR: distance & flight time
Spearfish-South Dakota (Black Hills Airport-Clyde Ice Field) → Biratnagar (Biratnagar Airport)
7,484 mi
12,045 km · 6,504 nm
15h 9m
estimated nonstop flight time
+11.8h
time difference · heading north
See live SPF→BIR fares Phone-only fares on this route — call free
Flight time details
7,484 miles nonstop takes roughly 15h 9m gate to gate, flying north. Add 45–90 minutes per connection if there's no nonstop service. Remember to factor the 11.8-hour time gain when reading arrival times on your ticket.
The two airports
- SPF — Black Hills Airport-Clyde Ice Field · Spearfish-South Dakota, United States
- BIR — Biratnagar Airport · Biratnagar, Nepal
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 SPF
- RCA · Ellsworth Air Force Base41 mi away
- RAP · Rapid City Regional Airport47 mi away
- GCC · Gillette Campbell County Airport87 mi away
- CDR · Chadron Municipal Airport119 mi away
Near BIR
- RJB · Rajbiraj Airport33 mi away
- BHP · Bhojpur Airport48 mi away
- BDP · Bhadrapur Airport51 mi away
- TMI · Tumling Tar Airport58 mi away
Frequently asked questions
How far is SPF from BIR?
The flight distance from Spearfish-South Dakota (SPF) to Biratnagar (BIR) is 7,484 miles (12,045 km, 6,504 nautical miles), measured along the great-circle route airlines actually fly.
How long is the flight from SPF to BIR?
A nonstop flight takes about 15h 9m 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 Spearfish-South Dakota and Biratnagar?
Biratnagar is 11.8 hours ahead of Spearfish-South Dakota.
What is the cheapest way to fly from SPF to BIR?
Compare live fares online, then call CheapoTrav — our agents have unpublished consolidator fares on SPF–BIR that never appear on search engines, with no booking fees.