Cheap Flights from Kolkata to Ontario International

Compare Kolkata to Ontario International flight deals

Find the cheapest month or even day of the year to fly to Ontario International

Book the best Ontario International fare with no extra fees

Flight deals from Kolkata to Ontario International

Looking for a cheap last-minute deal or the best return flight from Kolkata to Ontario International? Find the lowest prices on one-way and return tickets right here.

Find the cheapest month to fly from Kolkata to Ontario International

We’re always keeping an eye on fares, so you can find the best one in seconds. It looks like Kolkata to Ontario International flights are currently cheapest in April.

Kolkata to Ontario: Flight information

The things to know before you go.
Cheapest flight foundR 11,988
Cheapest month to flyApril

Finding cheap flights from Kolkata to Ontario International: Frequently asked questions

The best price we found for a return flight from Kolkata to Ontario International is R 23,471. This is an estimate based on information collected from different airlines and travel providers over the last 4 days and is subject to change and availability.
Currently, there are no airlines that fly direct from Kolkata to Ontario International. But we found flights with one or more stops from R 23,471.
As of February 2026, there are no flights flying from Kolkata to Ontario International.
The cheapest month to fly from Kolkata to Ontario International is usually March.
After crunching the numbers on our flight calendar, we found that it's currently cheapest to fly from Kolkata Airport to Ontario International Airport on Wednesday, 11 March 2026.
No airlines currently offer direct flights between Kolkata Airport and Ontario International Airport. Most routes have one or more stops.
We show every price from over 1,200 airlines and travel agents, comparing them all so you don’t have to. If you know you want to fly to Ontario International but you’re not ready to book, set up a Price Alert. We’ll track prices for you, and let you know when they rise or fall.
We crunched all the numbers in our flight calendar and it looks like the cheapest time to book a flight to Ontario is around 40 days in advance, so don’t leave your flight to the last minute.
Currently, Qatar Airways offers the cheapest flight tickets to Ontario International.

Flying from Netaji Subhas Chandra Bose Airport (CCU) to Ontario International Airport (ONT): what you need to know

  • Ontario is 12 hours 30 minutes behind Kolkata and is in the UTC-7 timezone.

  • Your CCU to ONT flight won't wait if you're running late, so show up at the airport on time. Arrive up to one hour in advance for domestic flights and two hours ahead for international travel.

  • Travelling during a peak time like July? Public holidays and other popular seasons can result in longer lines at security. Be extra cautious and arrive up to four hours ahead of international flights and two hours before a domestic departure.

How to find the cheapest flights from Netaji Subhas Chandra Bose Airport (CCU) to Ontario International Airport (ONT)

  • R 11,988 is currently the best price for a one-way Netaji Subhas Chandra Bose Airport to Ontario International Airport flight. A return flight starts from R 23,471. These prices may change based on availability and demand.

  • To get your hands on cheap tickets from CCU to ONT, book ahead. Airlines typically offer lower fares when flights are first released.

  • If you're willing to be flexible with your travel dates, try using the 'Whole month' search tool. It'll give you the cheapest price across the month when searching for a flight from Netaji Subhas Chandra Bose Airport to Ontario International Airport.

  • You don't need to check every day to find out if fares have gone down when you create a Price Alert. We'll send you an update as soon as there's a better deal on cheap flights from CCU to ONT.

  • Pick your ideal arrival and departure times, number of stops and airlines with the filters. Alternatively, sort your results by 'Cheapest' to get the best deals on flights from Netaji Subhas Chandra Bose Airport to Ontario International Airport.

Handy information about Netaji Subhas Chandra Bose Airport (CCU)

  • 75.9% of flights taking off from Netaji Subhas Chandra Bose Airport arrive at their destination on schedule.

  • To reach Netaji Subhas Chandra Bose Airport from central Kolkata, it'll take about 40 minutes by car. Of course, this depends on traffic conditions. It's approximately 16 kilometres from the airport to the city centre.

  • Expect a journey time of around 55 minutes on public transport.

  • Need a convenient hotel near CCU? If you're boarding an early flight from Netaji Subhas Chandra Bose Airport to Ontario International Airport, these stays will have you sleeping moments from your departure lounge:

Arriving at Ontario International Airport (ONT)

Getting from Ontario International Airport (ONT) to central Ontario

  • The street address for ONT is 2900 E. Airport Drive.

  • From Ontario International Airport, Ontario is approximately 6 kilometres away. It takes around 10 minutes to reach the centre by car.

  • It'll take around 1 hour 30 minutes when travelling by public transport.

When to fly to Ontario International Airport (ONT)

  • It's time to pick your travel dates for your flight from Netaji Subhas Chandra Bose Airport to Ontario International Airport. August is the busiest month to visit Ontario. If you prefer a more relaxed vibe, go in May.

  • Lock in your flight from Netaji Subhas Chandra Bose Airport to Ontario International Airport for August if you'd like to visit Ontario during its warmest month. You can expect temperatures of between 15ºC (59ºF) and 35ºC (95ºF).

  • Search for cheap tickets from CCU to ONT in January if you like cooler conditions. Temperatures are at their lowest around then, ranging between 4ºC (39ºF) and 23ºC (73ºF) on average.

Explore more of United States

  • Los Angeles is just one of the many cities in United States waiting to be discovered once you've seen Ontario. Around 56 kilometres away to the west, its best attractions include Griffith Observatory, The Broad and La Brea Tar Pits & Museum.

  • Around 153 kilometres south of Ontario, San Diego is another essential stop in United States. Experience major highlights starting with San Diego Zoo, USS Midway Museum and SeaWorld San Diego.

Prices shown on this page are estimated lowest prices only. Found in the last 45 days.