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BIR to OSP: distance & flight time
Biratnagar (Biratnagar Airport) → Slupsk (Redzikowo Air Base)
3,963 mi
6,377 km · 3,444 nm
8h 14m
estimated nonstop flight time
-3.7h
time difference · heading northwest
See live BIR→OSP fares Phone-only fares on this route — call free
Flight time details
3,963 miles nonstop takes roughly 8h 14m gate to gate, flying northwest. Add 45–90 minutes per connection if there's no nonstop service. Remember to factor the 3.7-hour time set-back when reading arrival times on your ticket.
The two airports
- BIR — Biratnagar Airport · Biratnagar, Nepal
- OSP — Redzikowo Air Base · Slupsk, Poland
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 OSP
- GDN · Gdańsk Lech Wałęsa Airport55 mi away
- QYD · Oksywie Military Air Base57 mi away
- RNN · Bornholm Airport102 mi away
- BZG · Bydgoszcz Ignacy Jan Paderewski Airport102 mi away
Frequently asked questions
How far is BIR from OSP?
The flight distance from Biratnagar (BIR) to Slupsk (OSP) is 3,963 miles (6,377 km, 3,444 nautical miles), measured along the great-circle route airlines actually fly.
How long is the flight from BIR to OSP?
A nonstop flight takes about 8h 14m 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 Slupsk?
Slupsk is 3.7 hours behind Biratnagar.
What is the cheapest way to fly from BIR to OSP?
Compare live fares online, then call CheapoTrav — our agents have unpublished consolidator fares on BIR–OSP that never appear on search engines, with no booking fees.