Need help booking?
Unpublished phone-only deals available
RBE to LKO: distance & flight time
Ratanakiri (Ratanakiri Airport) → Lucknow (Chaudhary Charan Singh International Airport)
1,910 mi
3,074 km · 1,660 nm
4h 13m
estimated nonstop flight time
-1.5h
time difference · heading northwest
See live RBE→LKO fares Phone-only fares on this route — call free
Flight time details
1,910 miles nonstop takes roughly 4h 13m gate to gate, flying northwest. Add 45–90 minutes per connection if there's no nonstop service. Remember to factor the 1.5-hour time set-back when reading arrival times on your ticket.
The two airports
- RBE — Ratanakiri Airport · Ratanakiri, Cambodia
- LKO — Chaudhary Charan Singh International Airport · Lucknow, India
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 RBE
- TNX · Stung Treng Airport67 mi away
- PXU · Pleiku Airport72 mi away
- AOU · Attopeu Airport76 mi away
- BMV · Buon Ma Thuot Airport106 mi away
Near LKO
- KNU · Kanpur Airport39 mi away
- KEP · Nepalgunj Airport104 mi away
- IXD · Allahabad Airport105 mi away
- DNP · Tulsipur Airport127 mi away
Frequently asked questions
How far is RBE from LKO?
The flight distance from Ratanakiri (RBE) to Lucknow (LKO) is 1,910 miles (3,074 km, 1,660 nautical miles), measured along the great-circle route airlines actually fly.
How long is the flight from RBE to LKO?
A nonstop flight takes about 4h 13m 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 Ratanakiri and Lucknow?
Lucknow is 1.5 hours behind Ratanakiri.
What is the cheapest way to fly from RBE to LKO?
Compare live fares online, then call CheapoTrav — our agents have unpublished consolidator fares on RBE–LKO that never appear on search engines, with no booking fees.