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$759+ 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 1/12. Fares are subject to change and may not be available on all flights or dates of travel.
ONT — CCU
Jan 14 — Jan 211
Wed 1/14
Wed 1/21
1 adult, Economy
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Cheap 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 December 15, 2025.

This KAYAK deal was found by Cheapflights users on 12/14. 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 KAYAK is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 12/267:19 pmONT - CCU
2 stops41h 06mMultiple Airlines
Wed 2/113:25 amCCU - ONT
2 stops33h 37mMultiple Airlines
Deal found 12/14$1,996
This oojo deal was found by Cheapflights users on 12/14. 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 12/2810:50 amONT - CCU
2 stops25h 35mQatar Airways
Wed 2/113:25 amCCU - ONT
2 stops32h 54mQatar Airways
Deal found 12/14$2,248
This oojo deal was found by Cheapflights users on 12/14. 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.
Sat 12/2710:50 amONT - CCU
2 stops25h 35mQatar Airways
Wed 2/113:25 amCCU - ONT
2 stops28h 44mQatar Airways
Deal found 12/14$2,506
This Justfly.com deal was found by Cheapflights users on 12/14. 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 Justfly.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 12/2610:50 amONT - CCU
2 stops25h 35mQatar Airways
Wed 2/113:25 amCCU - ONT
2 stops28h 44mQatar Airways
Deal found 12/14$2,509
This oojo deal was found by Cheapflights users on 12/14. 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.
Sat 12/2710:50 amONT - CCU
2 stops25h 35mQatar Airways
Sat 2/143:25 amCCU - ONT
2 stops52h 44mQatar Airways
Deal found 12/14$2,546
This KAYAK deal was found by Cheapflights users on 12/14. 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 KAYAK is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/2410:50 amONT - CCU
2 stops49h 35mQatar Airways
Tue 1/63:25 amCCU - ONT
2 stops28h 50mQatar Airways
Deal found 12/14$2,969
This KAYAK deal was found by Cheapflights users on 12/14. 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 KAYAK is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/2412:45 pmONT - CCU
2 stops47h 40mQatar Airways
Wed 12/313:25 amCCU - ONT
2 stops28h 21mQatar Airways
Deal found 12/14$3,027
This KAYAK deal was found by Cheapflights users on 12/14. 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 KAYAK is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/2412:45 pmONT - CCU
2 stops47h 40mQatar Airways
Mon 1/53:25 amCCU - ONT
2 stops28h 50mQatar Airways
Deal found 12/14$3,113
This KAYAK deal was found by Cheapflights users on 12/14. 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 KAYAK is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/2410:50 amONT - CCU
2 stops49h 35mQatar Airways
Sun 1/43:25 amCCU - ONT
2 stops48h 23mQatar Airways
Deal found 12/14$3,116
This oojo deal was found by Cheapflights users on 12/13. 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.
Wed 12/1710:47 amONT - CCU
2 stops49h 38mQatar Airways
Tue 1/63:25 amCCU - ONT
2 stops30h 41mQatar Airways
Deal found 12/13$3,243
This KAYAK deal was found by Cheapflights users on 12/14. 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 KAYAK is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 12/2210:50 amONT - CCU
2 stops25h 35mQatar Airways
Thu 1/13:25 amCCU - ONT
2 stops28h 21mQatar Airways
Deal found 12/14$3,303
This KAYAK deal was found by Cheapflights users on 12/14. 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 KAYAK is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 12/2210:50 amONT - CCU
2 stops25h 35mQatar Airways
Sun 1/43:25 amCCU - ONT
2 stops48h 23mQatar Airways
Deal found 12/14$3,305

Find 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 December 15, 2025.

Most accurate provider

eDreams
3 stars

Most trusted provider

eDreams
3 stars

Round-trip from

$1,048
(Trip.com)

One-way from

$759
(Trip.com)

Popular in

December

Cheapest in

August

Average price

$1,638
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. 11% potential increase in price ($161 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 December 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 December 15, 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

Mon 2/2

9:45 pm-11:50 pm

2 stops36h 35m

Kolkata Netaji S. Chandra

Sun 3/15

12:50 am-4:50 pm

2 stops28h 30m

$1,048

OntarioKolkata

ONT - CCU

ONTCCU

Ontario

Tue 1/20

10:50 pm-12:40 am

2 stops36h 20m

Kolkata Netaji S. Chandra

Mon 2/23

1:55 am-4:50 pm

2 stops28h 25m

$1,098

OntarioKolkata

ONT - CCU

ONTCCU

Ontario

Wed 4/22

11:10 pm-11:50 pm

2 stops36h 10m

Kolkata Netaji S. Chandra

Sun 6/28

1:00 am-5:05 pm

2 stops28h 35m

$1,105

OntarioKolkata

ONT - CCU

ONTCCU

Ontario

Thu 2/26

6:14 am-1:55 am

2 stops30h 11m

Kolkata Netaji S. Chandra

Sun 3/8

3:25 am-11:32 pm

2 stops32h 37m

$1,122

OntarioKolkata

ONT - CCU

ONTCCU

Ontario

Fri 2/27

6:14 am-1:55 am

2 stops30h 11m

Kolkata Netaji S. Chandra

Sun 3/8

3:25 am-11:32 pm

2 stops32h 37m

$1,161

OntarioKolkata

ONT - CCU

ONTCCU

Ontario

Fri 2/27

6:14 am-1:55 am

2 stops30h 11m

Kolkata Netaji S. Chandra

Tue 3/10

3:25 am-10:44 pm

2 stops31h 49m

$1,161

OntarioKolkata

ONT - CCU

ONTCCU

Ontario

Tue 1/20

11:53 am-1:55 am

2 stops24h 32m

Kolkata Netaji S. Chandra

Tue 2/24

3:25 am-10:44 pm

2 stops32h 49m

$1,183

OntarioKolkata

ONT - CCU

ONTCCU

Ontario

Fri 1/23

11:53 am-1:55 am

2 stops24h 32m

Kolkata Netaji S. Chandra

Tue 2/24

3:25 am-10:44 pm

2 stops32h 49m

$1,247

OntarioKolkata

ONT - CCU

ONTCCU

Ontario

Thu 1/22

6:00 am-1:55 am

2 stops30h 25m

Kolkata Netaji S. Chandra

Tue 2/24

3:25 am-10:44 pm

2 stops32h 49m

$1,307

OntarioKolkata

ONT - CCU

ONTCCU

Ontario

Thu 1/22

6:00 am-1:55 am

2 stops30h 25m

Kolkata Netaji S. Chandra

Wed 2/25

3:25 am-11:32 pm

2 stops33h 37m

$1,307

Flights are sorted by cheapest round-trip flights first.

Deals found on 12/14

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, 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 $1,270). 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.

  • How long is the flight from Ontario to Kolkata?

    For as low as $1,122, Qatar Airways can have you in Kolkata from Ontario in 30h 11m. The distance between Ontario and Kolkata is about 8155 mi.

  • 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 $1,270). 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.

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