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DTB to BIR: distance & flight time
Siborong-Borong (Silangit Airport) → Biratnagar (Biratnagar Airport)
1,845 mi
2,970 km · 1,604 nm
4h 5m
estimated nonstop flight time
-1.2h
time difference · heading northwest
See live DTB→BIR fares Phone-only fares on this route — call free
Flight time details
1,845 miles nonstop takes roughly 4h 5m gate to gate, flying northwest. Add 45–90 minutes per connection if there's no nonstop service. Remember to factor the 1.2-hour time set-back when reading arrival times on your ticket.
The two airports
- DTB — Silangit Airport · Siborong-Borong, Indonesia
- 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 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
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 DTB from BIR?
The flight distance from Siborong-Borong (DTB) to Biratnagar (BIR) 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 DTB to BIR?
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.
Are there nonstop flights from DTB to BIR?
Nonstop service on DTB–BIR depends on the season and the day of week. Run the fare search on this page with the nonstop filter applied to see current direct options; when there is no nonstop, a single connection through a carrier hub adds roughly 2–4 hours to the 4h 5m nonstop estimate.
What is the time difference between Siborong-Borong and Biratnagar?
Biratnagar is 1.2 hours behind Siborong-Borong.
What is the cheapest way to fly from DTB to BIR?
Compare live fares online, then call CheapoTrav — our agents have unpublished consolidator fares on DTB–BIR that never appear on search engines, with no booking fees.
Why are some DTB to BIR fares phone-only?
Consolidator contracts let us sell certain DTB–BIR tickets below the price airlines permit us to publish online, so those fares can only be quoted over the phone. Call the travel desk and an agent will check phone-only inventory for your dates.