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DED to REP: distance & flight time
Dehra Dun (Dehradun Airport) → Siem-reap (Siem Reap International Airport)
2,003 mi
3,224 km · 1,741 nm
4h 24m
estimated nonstop flight time
+1.5h
time difference · heading southeast
See live DED→REP fares Phone-only fares on this route — call free
Flight time details
2,003 miles nonstop takes roughly 4h 24m gate to gate, flying southeast. Add 45–90 minutes per connection if there's no nonstop service. Remember to factor the 1.5-hour time gain when reading arrival times on your ticket.
The two airports
- DED — Dehradun Airport · Dehra Dun, India
- REP — Siem Reap International Airport · Siem-reap, Cambodia
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 DED
- IXC · Chandigarh Airport89 mi away
- SLV · Shimla Airport90 mi away
- PGH · Pantnagar Airport111 mi away
- DEL · Indira Gandhi International Airport130 mi away
Near REP
- BBM · Battambang Airport45 mi away
- KZC · Kampong Chhnang Airport95 mi away
- PXR · Surin Airport103 mi away
- TDX · Trat Airport128 mi away
Frequently asked questions
How far is DED from REP?
The flight distance from Dehra Dun (DED) to Siem-reap (REP) is 2,003 miles (3,224 km, 1,741 nautical miles), measured along the great-circle route airlines actually fly.
How long is the flight from DED to REP?
A nonstop flight takes about 4h 24m 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 Dehra Dun and Siem-reap?
Siem-reap is 1.5 hours ahead of Dehra Dun.
What is the cheapest way to fly from DED to REP?
Compare live fares online, then call CheapoTrav — our agents have unpublished consolidator fares on DED–REP that never appear on search engines, with no booking fees.