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ONT to CCU: distance & flight time
Ontario (Ontario International Airport) → Kolkata (Netaji Subhash Chandra Bose International Airport)
8,161 mi
13,134 km · 7,092 nm
16h 28m
estimated nonstop flight time
+12.5h
time difference · heading northwest
See live ONT→CCU fares Phone-only fares on this route — call free
Flight time details
8,161 miles nonstop takes roughly 16h 28m gate to gate, flying northwest. Add 45–90 minutes per connection if there's no nonstop service. Remember to factor the 12.5-hour time gain when reading arrival times on your ticket.
The two airports
- ONT — Ontario International Airport · Ontario, United States
- CCU — Netaji Subhash Chandra Bose International Airport · Kolkata, 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 ONT
- CCB · Cable Airport6 mi away
- CNO · Chino Airport6 mi away
- LAX · Los Angeles International Airport47 mi away
- RAL · Riverside Municipal Airport11 mi away
Near CCU
- JSR · Jessore Airport58 mi away
- RDP · Kazi Nazrul Islam Airport102 mi away
- IRD · Ishurdi Airport110 mi away
- BZL · Barisal Airport119 mi away
Frequently asked questions
How far is ONT from CCU?
The flight distance from Ontario (ONT) to Kolkata (CCU) is 8,161 miles (13,134 km, 7,092 nautical miles), measured along the great-circle route airlines actually fly.
How long is the flight from ONT to CCU?
A nonstop flight takes about 16h 28m 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 Ontario and Kolkata?
Kolkata is 12.5 hours ahead of Ontario.
What is the cheapest way to fly from ONT to CCU?
Compare live fares online, then call CheapoTrav — our agents have unpublished consolidator fares on ONT–CCU that never appear on search engines, with no booking fees.