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$580+ Cheap flights from Ontario (ONT) to Kolkata (CCU)

This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 10/17. Fares are subject to change and may not be available on all flights or dates of travel.
ONT — CCU
Aug 31 — Sep 71
Sun 8/31
Sun 9/7
1 adult, Economy
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Cheap flight deals from Ontario to Kolkata

Discover tips and strategies to find the most affordable flight options for your journey from Ontario (ONT) to Kolkata (CCU). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated August 26, 2025.

Round-trip from

$984
(Trip.com)

One-way from

$580
(Trip.com)

Popular in

December

Cheapest in

March

Average price

$1,111
From Ontario to Kolkata Netaji S. Chandra
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One-way flight from Ontario to Kolkata Netaji S. Chandra
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Highest demand for flights based on searches. 13% potential increase in price ($200 potential increase over avg. RT price).
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Cheapest flight prices on average. 3% potential price decrease ($40 potential savings vs. average RT price).
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Average for round-trip flights in August 2025
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Find flight deals from Ontario to Kolkata

Cheapest flights from Ontario to Kolkata
Explore the most affordable flight options available from Ontario to Kolkata. Find the lowest fares from popular airlines and budget airlines, with prices last updated on August 26, 2025.

This Trip.com deal was found by Cheapflights users on 8/25. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/1712:10 amONT - CCU
2 stops36h 55mMultiple Airlines
Mon 11/32:35 amCCU - ONT
2 stops51h 45mMultiple Airlines
Deal found 8/25$984
This Trip.com deal was found by Cheapflights users on 8/26. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 11/210:50 pmONT - CCU
2 stops35h 35mMultiple Airlines
Thu 11/2712:30 amCCU - ONT
2 stops29h 50mMultiple Airlines
Deal found 8/26$1,166
This Mytrip deal was found by Cheapflights users on 8/25. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/1612:10 amONT - CCU
3 stops34h 30mMultiple Airlines
Tue 11/47:55 pmCCU - ONT
2 stops34h 25mMultiple Airlines
Deal found 8/25$1,292
This Mytrip deal was found by Cheapflights users on 8/25. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/1612:10 amONT - CCU
3 stops34h 30mMultiple Airlines
Sun 11/21:55 amCCU - ONT
2 stops28h 25mMultiple Airlines
Deal found 8/25$1,349
This Trip.com deal was found by Cheapflights users on 8/23. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 8/2612:45 amONT - CCU
2 stops35h 30mMultiple Airlines
Fri 9/52:00 amCCU - ONT
2 stops53h 10mMultiple Airlines
Deal found 8/23$1,361
This Trip.com deal was found by Cheapflights users on 8/25. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/3011:50 pmONT - CCU
2 stops36h 20mMultiple Airlines
Thu 12/41:55 amCCU - ONT
2 stops28h 25mMultiple Airlines
Deal found 8/25$1,482
This Trip.com deal was found by Cheapflights users on 8/25. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/1012:10 amONT - CCU
2 stops36h 05mMultiple Airlines
Sat 3/282:00 amCCU - ONT
2 stops28h 30mMultiple Airlines
Deal found 8/25$1,498
This oojo deal was found by Cheapflights users on 8/24. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/252:30 pmONT - CCU
2 stops47h 20mQatar Airways
Wed 10/83:50 amCCU - ONT
2 stops51h 42mQatar Airways
Deal found 8/24$2,030
This Indian Eagle deal was found by Cheapflights users on 8/24. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Indian Eagle is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 9/2910:53 amONT - CCU
2 stops26h 57mQatar Airways
Wed 10/293:25 amCCU - ONT
2 stops27h 58mQatar Airways
Deal found 8/24$2,038
This Priceline deal was found by Cheapflights users on 8/25. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Priceline is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/110:54 amONT - CCU
2 stops26h 56mQatar Airways
Wed 10/293:25 amCCU - ONT
2 stops27h 58mQatar Airways
Deal found 8/25$2,193

Cheapflights Fare Finder

 
Customize your flight search to find flights from Ontario to Kolkata that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated August 26, 2025.
Use the filters below to find and compare flights from Ontario to Kolkata that are best for you.

Fly from

Ontario

Fly to

Kolkata

Route

Depart

Return

Price

OntarioKolkata

ONT - CCU

ONTCCU

Ontario

Fri 10/17

12:10 am-1:35 am

2 stops36h 55m

Kolkata Netaji S. Chandra

Mon 11/3

2:35 am-4:50 pm

2 stops51h 45m

$984

OntarioKolkata

ONT - CCU

ONTCCU

Ontario

Sun 11/2

10:50 pm-11:55 pm

2 stops35h 35m

Kolkata Netaji S. Chandra

Thu 11/27

12:30 am-4:50 pm

2 stops29h 50m

$1,166

OntarioKolkata

ONT - CCU

ONTCCU

Ontario

Thu 10/16

12:10 am-11:10 pm

3 stops34h 30m

Kolkata Netaji S. Chandra

Tue 11/4

7:55 pm-4:50 pm

2 stops34h 25m

$1,292

OntarioKolkata

ONT - CCU

ONTCCU

Ontario

Thu 10/16

12:10 am-11:10 pm

3 stops34h 30m

Kolkata Netaji S. Chandra

Sun 11/2

1:55 am-4:50 pm

2 stops28h 25m

$1,349

OntarioKolkata

ONT - CCU

ONTCCU

Ontario

Thu 10/30

11:50 pm-12:40 am

2 stops36h 20m

Kolkata Netaji S. Chandra

Thu 12/4

1:55 am-4:50 pm

2 stops28h 25m

$1,482

OntarioKolkata

ONT - CCU

ONTCCU

Ontario

Fri 10/10

12:10 am-12:45 am

2 stops36h 05m

Kolkata Netaji S. Chandra

Sat 3/28

2:00 am-6:00 pm

2 stops28h 30m

$1,498

OntarioKolkata

ONT - CCU

ONTCCU

Ontario

Thu 9/25

2:30 pm-2:20 am

2 stops47h 20m

Kolkata Netaji S. Chandra

Wed 10/8

3:50 am-7:02 pm

2 stops51h 42m

$2,030

OntarioKolkata

ONT - CCU

ONTCCU

Ontario

Mon 9/29

10:53 am-2:20 am

2 stops26h 57m

Kolkata Netaji S. Chandra

Wed 10/29

3:25 am-6:53 pm

2 stops27h 58m

$2,038

OntarioKolkata

ONT - CCU

ONTCCU

Ontario

Wed 10/1

10:54 am-2:20 am

2 stops26h 56m

Kolkata Netaji S. Chandra

Wed 10/29

3:25 am-6:53 pm

2 stops27h 58m

$2,193

OntarioKolkata

ONT - CCU

ONTCCU

Ontario

Sat 2/21

11:05 am-1:55 am

2 stops25h 20m

Kolkata Netaji S. Chandra

Sat 2/28

3:25 am-10:37 pm

2 stops32h 42m

$2,219

Flights are sorted by cheapest round-trip flights first.

Deals found on 8/25

Showing 1-10 of 20 results
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Best time to book a flight from Ontario to Kolkata

Have a flexible travel schedule? Discover the best time to fly to Kolkata from Ontario with our price prediction graph.
Estimated round-trip price
Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.

Cheapflights Insights

Everything you need to know about your flight from Ontario to Kolkata

What is the cheapest month to book a flight from Ontario to Kolkata?

Currently, September is the cheapest month in which you can book a flight from Ontario to Kolkata (average of $974). Flying from Ontario to Kolkata in December is currently the most expensive (average of $1,647). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

Related info for your journey

Find useful and relevant information for your journey from Ontario to Kolkata. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • Can I find deals for flights from Ontario to Kolkata that include hotel bookings?

    Yes. In addition to deals on Ontario to Kolkata flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from Ontario to Kolkata?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Ontario to Kolkata.

  • Can I find deals for business class flights from Ontario to Kolkata?

    Yes. Cheapflights offers flight deals from Ontario to Kolkata by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

  • What is the cheapest month to book a flight from Ontario to Kolkata?

    Currently, September is the cheapest month in which you can book a flight from Ontario to Kolkata (average of $974). Flying from Ontario to Kolkata in December is currently the most expensive (average of $1,647). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

See more FAQs

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