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DEF to BIR: distance & flight time
Dezful (Dezful Airport) → Biratnagar (Biratnagar Airport)
2,361 mi
3,800 km · 2,052 nm
5h 6m
estimated nonstop flight time
+2.3h
time difference · heading east
See live DEF→BIR fares Phone-only fares on this route — call free
Flight time details
2,361 miles nonstop takes roughly 5h 6m gate to gate, flying east. Add 45–90 minutes per connection if there's no nonstop service. Remember to factor the 2.3-hour time gain when reading arrival times on your ticket.
The two airports
- DEF — Dezful Airport · Dezful, Iran
- 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 DEF
- KHD · Khoram Abad Airport69 mi away
- AWZ · Ahwaz Airport79 mi away
- OMI · Omidiyeh Airport129 mi away
- MRX · Mahshahr Airport137 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 DEF from BIR?
The flight distance from Dezful (DEF) to Biratnagar (BIR) is 2,361 miles (3,800 km, 2,052 nautical miles), measured along the great-circle route airlines actually fly.
How long is the flight from DEF to BIR?
A nonstop flight takes about 5h 6m 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 DEF to BIR?
Nonstop service on DEF–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 5h 6m nonstop estimate.
What is the time difference between Dezful and Biratnagar?
Biratnagar is 2.3 hours ahead of Dezful.
What is the cheapest way to fly from DEF to BIR?
Compare live fares online, then call CheapoTrav — our agents have unpublished consolidator fares on DEF–BIR that never appear on search engines, with no booking fees.
Why are some DEF to BIR fares phone-only?
Consolidator contracts let us sell certain DEF–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.