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$592+ 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 11/30. Fares are subject to change and may not be available on all flights or dates of travel.
ONT — CCU
Dec 12 — Dec 191
Fri 12/12
Fri 12/19
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 12, 2025.

This Trip.com deal was found by Cheapflights users on 11/11. 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 12/1210:50 pmONT - CCU
2 stops36h 20mMultiple Airlines
Tue 12/301:55 amCCU - ONT
2 stops28h 25mMultiple Airlines
Deal found 11/11$2,324
This Expedia deal was found by Cheapflights users on 11/11. 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 Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 12/227:19 pmONT - CCU
2 stops37h 36mMultiple Airlines
Mon 2/911:40 pmCCU - ONT
2 stops28h 58mMultiple Airlines
Deal found 11/11$2,889
This Justfly.com deal was found by Cheapflights users on 11/11. 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.
Mon 12/2210:50 amONT - CCU
2 stops25h 35mQatar Airways
Sun 2/83:25 amCCU - ONT
2 stops28h 50mQatar Airways
Deal found 11/11$3,163
This Trip.com deal was found by Cheapflights users on 11/11. 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 12/1910:50 pmONT - CCU
2 stops35h 35mMultiple Airlines
Thu 1/112:30 amCCU - ONT
2 stops29h 50mMultiple Airlines
Deal found 11/11$3,573
This Justfly.com deal was found by Cheapflights users on 11/11. 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 12/510:47 amONT - CCU
2 stops25h 38mQatar Airways
Sun 1/43:25 amCCU - ONT
2 stops28h 30mQatar Airways
Deal found 11/11$3,683
This FlightHub deal was found by Cheapflights users on 11/11. 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/1710:47 amONT - CCU
2 stops25h 38mQatar Airways
Sun 12/283:25 amCCU - ONT
2 stops28h 21mQatar Airways
Deal found 11/11$3,968
This Justfly.com deal was found by Cheapflights users on 11/10. 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 12/510:47 amONT - CCU
2 stops25h 38mQatar Airways
Fri 1/23:25 amCCU - ONT
2 stops47h 57mQatar Airways
Deal found 11/10$4,005
This Justfly.com deal was found by Cheapflights users on 11/12. 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.
Wed 11/193:08 pmONT - CCU
2 stops45h 17mQatar Airways
Sat 11/293:25 amCCU - ONT
2 stops52h 27mQatar Airways
Deal found 11/12$11,373
This KAYAK deal was found by Cheapflights users on 11/12. 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.
Tue 12/2310:50 amONT - CCU
2 stops25h 35mQatar Airways
Mon 12/293:25 amCCU - ONT
2 stops34h 19mQatar Airways
Deal found 11/12$11,586
This oojo deal was found by Cheapflights users on 11/11. 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 11/1811:59 amONT - CCU
2 stops24h 26mQatar Airways
Fri 11/283:25 amCCU - ONT
2 stops48h 09mQatar Airways
Deal found 11/11$12,593

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 12, 2025.

Most accurate provider

eDreams
3 stars

Most trusted provider

eDreams
3 stars

Round-trip from

$1,420
(Etihad Airways)

One-way from

$592
(Trip.com)

Popular in

December

Cheapest in

March

Average price

$1,292
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. 8% potential increase in price ($126 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 2% potential price decrease ($32 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 12, 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

Wed 4/29

11:25 pm-8:20 pm

2 stops32h 25m

Kolkata Netaji S. Chandra

Sun 5/3

9:15 pm-10:09 pm

2 stops37h 24m

$1,420

OntarioKolkata

ONT - CCU

ONTCCU

Ontario

Sun 1/25

10:58 am-1:55 am

2 stops25h 27m

Kolkata Netaji S. Chandra

Sat 3/14

3:25 am-10:02 pm

2 stops31h 07m

$1,991

OntarioKolkata

ONT - CCU

ONTCCU

Ontario

Fri 2/6

7:16 am-1:55 am

2 stops29h 09m

Kolkata Netaji S. Chandra

Tue 2/17

3:25 am-10:51 pm

2 stops32h 56m

$2,019

OntarioKolkata

ONT - CCU

ONTCCU

Ontario

Wed 4/29

6:43 am-2:20 am

2 stops31h 07m

Kolkata Netaji S. Chandra

Sat 5/2

3:50 am-11:40 pm

2 stops32h 20m

$2,092

OntarioKolkata

ONT - CCU

ONTCCU

Ontario

Fri 12/12

10:50 pm-12:40 am

2 stops36h 20m

Kolkata Netaji S. Chandra

Tue 12/30

1:55 am-4:50 pm

2 stops28h 25m

$2,324

OntarioKolkata

ONT - CCU

ONTCCU

Ontario

Mon 12/22

7:19 pm-10:25 pm

2 stops37h 36m

Kolkata Netaji S. Chandra

Mon 2/9

11:40 pm-3:08 pm

2 stops28h 58m

$2,889

OntarioKolkata

ONT - CCU

ONTCCU

Ontario

Mon 12/22

10:50 am-1:55 am

2 stops25h 35m

Kolkata Netaji S. Chandra

Sun 2/8

3:25 am-6:45 pm

2 stops28h 50m

$3,163

OntarioKolkata

ONT - CCU

ONTCCU

Ontario

Fri 12/5

10:47 am-1:55 am

2 stops25h 38m

Kolkata Netaji S. Chandra

Sun 1/4

3:25 am-6:25 pm

2 stops28h 30m

$3,683

OntarioKolkata

ONT - CCU

ONTCCU

Ontario

Wed 12/17

10:47 am-1:55 am

2 stops25h 38m

Kolkata Netaji S. Chandra

Sun 12/28

3:25 am-6:16 pm

2 stops28h 21m

$3,968

OntarioKolkata

ONT - CCU

ONTCCU

Ontario

Fri 12/5

10:47 am-1:55 am

2 stops25h 38m

Kolkata Netaji S. Chandra

Fri 1/2

3:25 am-1:52 pm

2 stops47h 57m

$4,005

Flights are sorted by cheapest round-trip flights first.

Deals found on 11/12

Showing 1-10 of 22 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.

  • How long is the flight from Ontario to Kolkata?

    For as low as $1,991, Etihad Airways can have you in Kolkata from Ontario in 25h 27m. The distance between Ontario and Kolkata is about 8155 mi. When browsing for deals, the options you’ll see will be for both nonstop flights and flights with stops.

  • 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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