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LKO to YSM: distance & flight time
Lucknow (Chaudhary Charan Singh International Airport) → Fort Smith (Fort Smith Airport)
6,397 mi
10,294 km · 5,558 nm
13h 1m
estimated nonstop flight time
-11.5h
time difference · heading north
See live LKO→YSM fares Phone-only fares on this route — call free
Flight time details
6,397 miles nonstop takes roughly 13h 1m gate to gate, flying north. Add 45–90 minutes per connection if there's no nonstop service. Remember to factor the 11.5-hour time set-back when reading arrival times on your ticket.
The two airports
- LKO — Chaudhary Charan Singh International Airport · Lucknow, India
- YSM — Fort Smith Airport · Fort Smith, Canada
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 LKO
- KNU · Kanpur Airport39 mi away
- KEP · Nepalgunj Airport104 mi away
- IXD · Allahabad Airport105 mi away
- DNP · Tulsipur Airport127 mi away
Near YSM
- YPY · Fort Chipewyan Airport92 mi away
- YFR · Fort Resolution Airport99 mi away
- YBE · Uranium City Airport125 mi away
- YHY · Hay River / Merlyn Carter Airport142 mi away
Frequently asked questions
How far is LKO from YSM?
The flight distance from Lucknow (LKO) to Fort Smith (YSM) is 6,397 miles (10,294 km, 5,558 nautical miles), measured along the great-circle route airlines actually fly.
How long is the flight from LKO to YSM?
A nonstop flight takes about 13h 1m 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 Lucknow and Fort Smith?
Fort Smith is 11.5 hours behind Lucknow.
What is the cheapest way to fly from LKO to YSM?
Compare live fares online, then call CheapoTrav — our agents have unpublished consolidator fares on LKO–YSM that never appear on search engines, with no booking fees.