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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 3/16. Fares are subject to change and may not be available on all flights or dates of travel.
ONT — CCU
Mar 5 — Mar 121
Thu 3/5
Thu 3/12
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 February 3, 2026.

This Trip.com deal was found by Cheapflights users on 2/2. 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 2/2710:50 pm
ONT
-
CCU
2 stops35h 30m
Multiple Airlines
Sun 3/812:50 am
CCU
-
ONT
2 stops29h 30m
Multiple Airlines
Deal found 2/2$1,020
This Trip.com deal was found by Cheapflights users on 2/3. 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 2/2710:50 pm
ONT
-
CCU
2 stops35h 30m
Multiple Airlines
Mon 3/912:50 am
CCU
-
ONT
2 stops29h 30m
Multiple Airlines
Deal found 2/3$1,059
This Trip.com deal was found by Cheapflights users on 2/1. 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.
Mon 2/210:50 pm
ONT
-
CCU
2 stops35h 30m
Multiple Airlines
Sun 2/812:50 am
CCU
-
ONT
2 stops29h 30m
Multiple Airlines
Deal found 2/1$1,106
This FlightHub deal was found by Cheapflights users on 1/31. 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.
Thu 2/266:14 am
ONT
-
CCU
2 stops30h 11m
Qatar Airways
Mon 3/93:25 am
CCU
-
ONT
2 stops31h 49m
Qatar Airways
Deal found 1/31$1,155
This FlightHub deal was found by Cheapflights users on 2/2. 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.
Thu 11/56:00 am
ONT
-
CCU
2 stops30h 25m
Qatar Airways
Wed 11/253:25 am
CCU
-
ONT
2 stops32h 44m
Qatar Airways
Deal found 2/2$1,157
This Trip.com deal was found by Cheapflights users on 2/1. 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 2/310:50 pm
ONT
-
CCU
2 stops36h 20m
Multiple Airlines
Mon 2/91:55 am
CCU
-
ONT
2 stops28h 25m
Multiple Airlines
Deal found 2/1$1,170
This FlightHub deal was found by Cheapflights users on 1/31. 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.
Fri 2/276:14 am
ONT
-
CCU
2 stops30h 11m
Qatar Airways
Mon 3/93:25 am
CCU
-
ONT
2 stops31h 49m
Qatar Airways
Deal found 1/31$1,195
This FlightHub deal was found by Cheapflights users on 2/2. 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.
Tue 2/246:14 am
ONT
-
CCU
2 stops30h 11m
Qatar Airways
Sun 3/83:25 am
CCU
-
ONT
2 stops32h 37m
Qatar Airways
Deal found 2/2$1,218
This FlightHub deal was found by Cheapflights users on 2/3. 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.
Mon 3/96:14 am
ONT
-
CCU
2 stops31h 11m
Qatar Airways
Tue 3/173:25 am
CCU
-
ONT
2 stops33h 04m
Qatar Airways
Deal found 2/3$1,222
This FlightHub deal was found by Cheapflights users on 2/3. 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 2/256:14 am
ONT
-
CCU
2 stops30h 11m
Qatar Airways
Sun 3/153:25 am
CCU
-
ONT
2 stops32h 37m
Qatar Airways
Deal found 2/3$1,253

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 February 3, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$1,020
(Trip.com)

One-way from

$592
(FlightHub)

Popular in

June

Cheapest in

August

Average price

$1,251
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 ($155 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 2% potential price decrease ($27 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in February 2026
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 February 3, 2026.
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 2/27

10:50 pm-11:50 pm

2 stops35h 30m

Kolkata Netaji S. Chandra

Sun 3/8

12:50 am-5:50 pm

2 stops29h 30m

$1,020

OntarioKolkata

ONT - CCU

ONTCCU

Ontario

Thu 2/26

6:14 am-1:55 am

2 stops30h 11m

Kolkata Netaji S. Chandra

Mon 3/9

3:25 am-10:44 pm

2 stops31h 49m

$1,155

OntarioKolkata

ONT - CCU

ONTCCU

Ontario

Fri 2/27

6:14 am-1:55 am

2 stops30h 11m

Kolkata Netaji S. Chandra

Mon 3/9

3:25 am-10:44 pm

2 stops31h 49m

$1,195

OntarioKolkata

ONT - CCU

ONTCCU

Ontario

Tue 2/24

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

$1,218

OntarioKolkata

ONT - CCU

ONTCCU

Ontario

Tue 3/10

12:02 pm-1:55 am

2 stops25h 23m

Kolkata Netaji S. Chandra

Tue 3/17

3:25 am-11:59 pm

2 stops33h 04m

$1,253

OntarioKolkata

ONT - CCU

ONTCCU

Ontario

Mon 3/9

6:14 am-1:55 am

2 stops31h 11m

Kolkata Netaji S. Chandra

Sun 3/15

3:25 am-11:32 pm

2 stops32h 37m

$1,308

OntarioKolkata

ONT - CCU

ONTCCU

Ontario

Wed 3/11

12:02 pm-1:55 am

2 stops25h 23m

Kolkata Netaji S. Chandra

Tue 3/17

3:25 am-11:59 pm

2 stops33h 04m

$1,308

OntarioKolkata

ONT - CCU

ONTCCU

Ontario

Sat 3/7

12:02 pm-1:55 am

2 stops24h 23m

Kolkata Netaji S. Chandra

Tue 3/17

3:25 am-11:59 pm

2 stops33h 04m

$1,347

OntarioKolkata

ONT - CCU

ONTCCU

Ontario

Thu 4/23

7:59 pm-10:15 pm

2 stops37h 46m

Kolkata Netaji S. Chandra

Mon 6/29

11:30 pm-4:16 pm

2 stops29h 16m

$1,356

OntarioKolkata

ONT - CCU

ONTCCU

Ontario

Mon 3/9

6:14 am-1:55 am

2 stops31h 11m

Kolkata Netaji S. Chandra

Mon 3/16

3:25 am-10:44 pm

2 stops31h 49m

$1,363

Flights are sorted by cheapest round-trip flights first.

Deals found on 2/1

Showing 1-10 of 18 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 $775). Flying from Ontario to Kolkata in December is currently the most expensive (average of $1,260). 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 $1,155, 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 $775). Flying from Ontario to Kolkata in December is currently the most expensive (average of $1,260). 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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