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CCU to ONT: distance & flight time
Kolkata (Netaji Subhash Chandra Bose International Airport) → Ontario (Ontario International Airport)
8,161 mi
13,134 km · 7,092 nm
16h 28m
estimated nonstop flight time
-12.5h
time difference · heading northeast
See live CCU→ONT fares Phone-only fares on this route — call free
Flight time details
8,161 miles nonstop takes roughly 16h 28m gate to gate, flying northeast. Add 45–90 minutes per connection if there's no nonstop service. Remember to factor the 12.5-hour time set-back when reading arrival times on your ticket.
The two airports
- CCU — Netaji Subhash Chandra Bose International Airport · Kolkata, India
- ONT — Ontario International Airport · Ontario, United States
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 CCU
- JSR · Jessore Airport58 mi away
- RDP · Kazi Nazrul Islam Airport102 mi away
- IRD · Ishurdi Airport110 mi away
- BZL · Barisal Airport119 mi away
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
Frequently asked questions
How far is CCU from ONT?
The flight distance from Kolkata (CCU) to Ontario (ONT) 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 CCU to ONT?
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 Kolkata and Ontario?
Ontario is 12.5 hours behind Kolkata.
What is the cheapest way to fly from CCU to ONT?
Compare live fares online, then call CheapoTrav — our agents have unpublished consolidator fares on CCU–ONT that never appear on search engines, with no booking fees.