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$712+ 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 12/4. Fares are subject to change and may not be available on all flights or dates of travel.
ONT — CCU
Dec 20 — Dec 271
Sat 12/20
Sat 12/27
1 adult, Economy
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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 November 20, 2025.

This Trip.com deal was found by Cheapflights users on 11/18. 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.
Wed 12/1010:50 pmONT - CCU
2 stops35h 35mMultiple Airlines
Tue 1/1312:30 amCCU - ONT
2 stops53h 50mMultiple Airlines
Deal found 11/18$1,655
This Trip.com deal was found by Cheapflights users on 11/19. 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 12/2310:50 pmONT - CCU
2 stops35h 35mMultiple Airlines
Sun 1/1112:30 amCCU - ONT
2 stops53h 50mMultiple Airlines
Deal found 11/19$1,752
This Trip.com deal was found by Cheapflights users on 11/17. 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.
Wed 12/2410:50 pmONT - CCU
2 stops35h 35mMultiple Airlines
Sat 1/1012:30 amCCU - ONT
2 stops53h 50mMultiple Airlines
Deal found 11/17$1,781
This Trip.com deal was found by Cheapflights users on 11/19. 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 12/2510:50 pmONT - CCU
2 stops35h 35mMultiple Airlines
Mon 1/1212:30 amCCU - ONT
2 stops29h 50mMultiple Airlines
Deal found 11/19$1,938
This Trip.com deal was found by Cheapflights users on 11/18. 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 12/2310:50 pmONT - CCU
2 stops35h 35mMultiple Airlines
Fri 1/912:30 amCCU - ONT
2 stops29h 50mMultiple Airlines
Deal found 11/18$2,001
This Trip.com deal was found by Cheapflights users on 11/19. 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.
Wed 12/2410:50 pmONT - CCU
2 stops36h 20mMultiple Airlines
Sun 1/111:55 amCCU - ONT
2 stops52h 25mMultiple Airlines
Deal found 11/19$2,052
This oojo deal was found by Cheapflights users on 11/18. 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.
Sun 11/232:59 pmONT - CCU
2 stops45h 26mQatar Airways
Sun 12/73:25 amCCU - ONT
2 stops28h 22mQatar Airways
Deal found 11/18$2,718
This oojo deal was found by Cheapflights users on 11/18. 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.
Tue 11/2510:47 amONT - CCU
2 stops25h 38mQatar Airways
Fri 12/123:25 amCCU - ONT
2 stops48h 04mQatar Airways
Deal found 11/18$2,749
This Qatar Airways deal was found by Cheapflights users on 11/18. 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 Qatar Airways is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 12/2810:50 amONT - CCU
2 stops25h 35mQatar Airways
Sat 1/313:25 amCCU - ONT
2 stops28h 50mQatar Airways
Deal found 11/18$2,903
This Qatar Airways deal was found by Cheapflights users on 11/19. 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 Qatar Airways is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 12/610:47 amONT - CCU
2 stops25h 38mQatar Airways
Tue 12/93:25 amCCU - ONT
2 stops28h 22mQatar Airways
Deal found 11/19$2,990

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 November 20, 2025.

Most accurate provider

eDreams
3 stars

Most trusted provider

eDreams
3 stars

Round-trip from

$1,003
(Trip.com)

One-way from

$712
(Trip.com)

Popular in

December

Cheapest in

March

Average price

$1,342
Provider with most accurate pricing for Los Angeles-Kolkata Netaji S. Chandra flight deals.
Search Deals
Provider most trusted by Cheapflights users for Los Angeles-Kolkata Netaji S. Chandra flights.
Search Deals
From Ontario to Kolkata Netaji S. Chandra
Search Deals
One-way flight from Ontario to Kolkata Netaji S. Chandra
Search Deals
Highest demand for flights based on searches. 10% potential increase in price ($145 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 2% potential price decrease ($31 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in November 2025
Search Deals

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 November 20, 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

Sat 1/3

10:50 pm-11:50 pm

2 stops35h 30m

Kolkata Netaji S. Chandra

Wed 2/11

12:50 am-4:50 pm

2 stops29h 30m

$1,003

OntarioKolkata

ONT - CCU

ONTCCU

Ontario

Tue 2/10

10:50 pm-12:40 am

2 stops36h 20m

Kolkata Netaji S. Chandra

Tue 2/17

1:55 am-4:50 pm

2 stops28h 25m

$1,415

OntarioKolkata

ONT - CCU

ONTCCU

Ontario

Wed 2/4

10:50 pm-12:40 am

2 stops36h 20m

Kolkata Netaji S. Chandra

Sat 2/14

1:55 am-4:50 pm

2 stops28h 25m

$1,415

OntarioKolkata

ONT - CCU

ONTCCU

Ontario

Wed 12/10

10:50 pm-11:55 pm

2 stops35h 35m

Kolkata Netaji S. Chandra

Tue 1/13

12:30 am-4:50 pm

2 stops53h 50m

$1,655

OntarioKolkata

ONT - CCU

ONTCCU

Ontario

Tue 12/23

10:50 pm-11:55 pm

2 stops35h 35m

Kolkata Netaji S. Chandra

Sun 1/11

12:30 am-4:50 pm

2 stops53h 50m

$1,752

OntarioKolkata

ONT - CCU

ONTCCU

Ontario

Wed 12/24

10:50 pm-11:55 pm

2 stops35h 35m

Kolkata Netaji S. Chandra

Sat 1/10

12:30 am-4:50 pm

2 stops53h 50m

$1,781

OntarioKolkata

ONT - CCU

ONTCCU

Ontario

Tue 1/13

10:58 am-1:55 am

2 stops25h 27m

Kolkata Netaji S. Chandra

Thu 2/12

3:25 am-6:40 pm

2 stops28h 45m

$1,948

OntarioKolkata

ONT - CCU

ONTCCU

Ontario

Thu 1/22

10:58 am-1:55 am

2 stops25h 27m

Kolkata Netaji S. Chandra

Fri 2/13

3:25 am-6:40 pm

2 stops28h 45m

$1,986

OntarioKolkata

ONT - CCU

ONTCCU

Ontario

Wed 2/11

10:58 am-1:55 am

2 stops25h 27m

Kolkata Netaji S. Chandra

Sun 3/22

3:25 am-10:02 pm

2 stops31h 07m

$2,052

OntarioKolkata

ONT - CCU

ONTCCU

Ontario

Wed 12/24

10:50 pm-12:40 am

2 stops36h 20m

Kolkata Netaji S. Chandra

Sun 1/11

1:55 am-4:50 pm

2 stops52h 25m

$2,052

Flights are sorted by cheapest round-trip flights first.

Deals found on 11/18

Showing 1-10 of 21 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, March is the cheapest month in which you can book a flight from Ontario to Kolkata (average of $767). Flying from Ontario to Kolkata in December is currently the most expensive (average of $1,265). 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, March is the cheapest month in which you can book a flight from Ontario to Kolkata (average of $767). Flying from Ontario to Kolkata in December is currently the most expensive (average of $1,265). 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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