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BIR to DTB: distance & flight time
Biratnagar (Biratnagar Airport) → Siborong-Borong (Silangit Airport)
1,845 mi
2,970 km · 1,604 nm
4h 5m
estimated nonstop flight time
+1.3h
time difference · heading southeast
See live BIR→DTB fares Phone-only fares on this route — call free
Flight time details
1,845 miles nonstop takes roughly 4h 5m gate to gate, flying southeast. Add 45–90 minutes per connection if there's no nonstop service. Remember to factor the 1.3-hour time gain when reading arrival times on your ticket.
The two airports
- BIR — Biratnagar Airport · Biratnagar, Nepal
- DTB — Silangit Airport · Siborong-Borong, Indonesia
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 DTB
- FLZ · Dr Ferdinand Lumban Tobing Airport49 mi away
- AEG · Aek Godang Airport67 mi away
- MES · Soewondo Air Force Base92 mi away
- KNO · Kualanamu International Airport96 mi away
Frequently asked questions
How far is BIR from DTB?
The flight distance from Biratnagar (BIR) to Siborong-Borong (DTB) is 1,845 miles (2,970 km, 1,604 nautical miles), measured along the great-circle route airlines actually fly.
How long is the flight from BIR to DTB?
A nonstop flight takes about 4h 5m 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 Siborong-Borong?
Siborong-Borong is 1.3 hours ahead of Biratnagar.
What is the cheapest way to fly from BIR to DTB?
Compare live fares online, then call CheapoTrav — our agents have unpublished consolidator fares on BIR–DTB that never appear on search engines, with no booking fees.