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$368+ Cheap flights from Ontario (ONT) to Istanbul (IST)

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 9/24. Fares are subject to change and may not be available on all flights or dates of travel.
ONT — IST
Oct 16 — Oct 231
Thu 10/16
Thu 10/23
1 adult, Economy
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Cheap flight deals from Ontario to Istanbul

Discover tips and strategies to find the most affordable flight options for your journey from Ontario (ONT) to Istanbul (IST). 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 September 16, 2025.

Round-trip from

$739
(United Airlines)

One-way from

$368
(Kiwi.com)

Popular in

June

Cheapest in

February

Average price

$997
From Ontario to Istanbul
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One-way flight from Ontario to Istanbul
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Highest demand for flights based on searches. 15% potential increase in price ($191 potential increase over avg. RT price).
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Cheapest flight prices on average. 3% potential price decrease ($36 potential savings vs. average RT price).
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Average for round-trip flights in September 2025
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Find flight deals from Ontario to Istanbul

Cheapest flights from Ontario to Istanbul
Explore the most affordable flight options available from Ontario to Istanbul. Find the lowest fares from popular airlines and budget airlines, with prices last updated on September 16, 2025.

This United Airlines deal was found by Cheapflights users on 9/16. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 11/191:45 pmONT - IST
2 stops22h 00mUnited Airlines
Wed 12/36:30 amIST - ONT
2 stops27h 19mUnited Airlines
Deal found 9/16$739
This United Airlines deal was found by Cheapflights users on 9/15. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 11/151:29 pmONT - IST
2 stops46h 16mUnited Airlines
Tue 11/256:30 amIST - ONT
2 stops26h 19mUnited Airlines
Deal found 9/15$745
This United Airlines deal was found by Cheapflights users on 9/13. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/106:00 amONT - IST
2 stops29h 45mUnited Airlines
Fri 1/96:30 amIST - ONT
2 stops50h 56mUnited Airlines
Deal found 9/13$747
This Kissandfly.com deal was found by Cheapflights users on 9/14. 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 Kissandfly.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 10/201:53 pmONT - IST
2 stops21h 27mLufthansa
Tue 11/46:30 amIST - ONT
2 stops22h 04mLufthansa
Deal found 9/14$765
This Air France deal was found by Cheapflights users on 9/15. 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 Air France is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 11/1511:45 amONT - IST
2 stops29h 05mMultiple Airlines
Sun 12/75:55 pmIST - ONT
2 stops40h 08mMultiple Airlines
Deal found 9/15$769
This United Airlines deal was found by Cheapflights users on 9/14. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 11/91:40 pmONT - IST
2 stops22h 05mUnited Airlines
Sat 11/226:30 amIST - ONT
2 stops22h 04mUnited Airlines
Deal found 9/14$789
This United Airlines deal was found by Cheapflights users on 9/13. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/101:50 pmONT - IST
2 stops21h 55mUnited Airlines
Mon 1/126:30 amIST - ONT
2 stops22h 13mUnited Airlines
Deal found 9/13$790
This United Airlines deal was found by Cheapflights users on 9/16. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 11/81:29 pmONT - IST
2 stops46h 16mUnited Airlines
Sat 11/226:30 amIST - ONT
2 stops27h 21mUnited Airlines
Deal found 9/16$795
This United Airlines deal was found by Cheapflights users on 9/13. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 12/115:05 amONT - IST
2 stops26h 00mUnited Airlines
Fri 1/96:30 amIST - ONT
2 stops50h 56mUnited Airlines
Deal found 9/13$797
This United Airlines deal was found by Cheapflights users on 9/13. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 12/115:05 amONT - IST
2 stops26h 00mUnited Airlines
Mon 1/126:30 amIST - ONT
2 stops22h 13mUnited Airlines
Deal found 9/13$840
This British Airways deal was found by Cheapflights users on 9/14. 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 British Airways is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 10/254:49 pmONT - IST
2 stops22h 21mBritish Airways
Sun 11/98:20 amIST - ONT
2 stops26h 37mBritish Airways
Deal found 9/14$842
This Gurufare deal was found by Cheapflights users on 9/16. 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 Gurufare is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 11/83:08 pmONT - IST
2 stops23h 02mBritish Airways
Sat 11/157:35 amIST - ONT
2 stops25h 54mBritish Airways
Deal found 9/16$868

Cheapflights Fare Finder

 
Customize your flight search to find flights from Ontario to Istanbul 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 September 16, 2025.
Use the filters below to find and compare flights from Ontario to Istanbul Airport that are best for you.

Fly from

Ontario

Fly to

Istanbul

Route

Depart

Return

Price

OntarioIstanbul

ONT - IST

ONTIST

Ontario

Sun 11/23

7:00 am-6:05 pm

2 stops24h 05m

Istanbul

Tue 12/2

6:30 am-5:37 pm

2 stops22h 07m

$739

OntarioIstanbul

ONT - IST

ONTIST

Ontario

Wed 11/19

1:45 pm-10:45 pm

2 stops22h 00m

Istanbul

Wed 11/26

6:30 am-10:31 pm

2 stops27h 01m

$739

OntarioIstanbul

ONT - IST

ONTIST

Ontario

Tue 11/25

5:05 am-5:45 pm

2 stops25h 40m

Istanbul

Tue 12/2

6:30 am-5:37 pm

2 stops22h 07m

$739

OntarioIstanbul

ONT - IST

ONTIST

Ontario

Tue 11/4

1:33 pm-5:45 pm

2 stops17h 12m

Istanbul

Tue 11/18

6:30 am-5:34 pm

2 stops22h 04m

$739

OntarioIstanbul

ONT - IST

ONTIST

Ontario

Wed 12/10

5:05 am-6:05 pm

2 stops26h 00m

Istanbul

Tue 1/13

6:30 am-10:26 pm

2 stops26h 56m

$739

OntarioIstanbul

ONT - IST

ONTIST

Ontario

Tue 12/2

1:50 pm-10:45 pm

2 stops21h 55m

Istanbul

Tue 12/16

6:30 am-5:37 pm

2 stops22h 07m

$739

OntarioIstanbul

ONT - IST

ONTIST

Ontario

Tue 11/11

1:40 pm-10:45 pm

2 stops22h 05m

Istanbul

Tue 11/18

6:30 am-5:34 pm

2 stops22h 04m

$739

OntarioIstanbul

ONT - IST

ONTIST

Ontario

Sun 10/12

1:53 pm-9:20 pm

2 stops45h 27m

Istanbul

Fri 11/14

6:30 am-10:51 pm

2 stops27h 21m

$745

OntarioIstanbul

ONT - IST

ONTIST

Ontario

Sat 11/15

6:38 pm-6:05 pm

3 stops36h 27m

Istanbul

Sun 12/7

6:30 am-8:42 pm

2 stops25h 12m

$789

OntarioIstanbul

ONT - IST

ONTIST

Ontario

Thu 12/11

5:05 am-6:05 pm

2 stops26h 00m

Istanbul

Tue 1/13

6:30 am-10:26 pm

2 stops26h 56m

$789

Flights are sorted by cheapest round-trip flights first.

Deals found on 9/15

Showing 1-10 of 23 results
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2
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Best time to book a flight from Ontario to Istanbul

Have a flexible travel schedule? Discover the best time to fly to Istanbul 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 Istanbul Airport

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

Currently, October is the cheapest month in which you can book a flight from Ontario to Istanbul Airport (average of $910). Flying from Ontario to Istanbul Airport in June is currently the most expensive (average of $1,358). 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.

What is the cheapest time of day to fly from ONT to IST?

Find hourly flight availability from Ontario to Istanbul. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated September 16, 2025.

It’s typically best to fly out from Ontario to Istanbul Airport at noon. Doing so could potentially save you 8% on the flight price compared to flying in the morning, which is usually more expensive.

Reviews of airlines servicing Istanbul

Get insights into the airlines that provide service to Istanbul. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to Istanbul. Reviews last updated September 16, 2025.
Read through reviews of airlines operating flights from Ontario to Istanbul Airport, such as United Airlines. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.
United Airlines
7.4
Good
8,924 reviews

Comfort

7.3

Food

6.6

Crew

8.1

Entertainment

7.1

Boarding

7.7

Overall

7.4

Reviews

1 / 20
4.0
Okay

Thomas,Mar 2025

SFO - TPE

When I asked for an extra snack, I got an unhappy look from the stewardess. Geez, does one extra snack really affect the bottom line??
United Airlines
7.4
Good
8,924 reviews
United Airlines
7.4
Good
8,924 reviews

Comfort

7.3

Food

6.6

Crew

8.1

Entertainment

7.1

Boarding

7.7

Overall

7.4

Reviews

1 / 20
4.0
Okay

Thomas,Mar 2025

SFO - TPE

When I asked for an extra snack, I got an unhappy look from the stewardess. Geez, does one extra snack really affect the bottom line??

Related info for your journey

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

  • What airport do you fly from for flights from Ontario to Istanbul?

    Ontario (ONT) is the airport you will fly out of if you book a flight from Ontario to Istanbul. You should not have trouble finding flights to Istanbul from Ontario; the airport handles an average of 0 outbound flights to Istanbul per day. You should also have plenty of airline options to choose from since 1 airline has flights from the Ontario airport to Istanbul. It is only a 3.1 mi journey to Ontario (ONT) from Ontario’s city center.

  • How long is the flight from Ontario to Istanbul Airport?

    Departing from Ontario to Istanbul Airport will take you 24h 05m. Ontario and Istanbul Airport are separated by a distance of 6805 mi.

  • What is the cheapest airline to fly from Ontario to Istanbul Airport round-trip?

    Our cheapest airline available from Ontario to Istanbul Airport is United Airlines. Our recent data shows that you can find tickets from as low as $1,195 on this airline.

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

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

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

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

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

    Yes. Cheapflights offers flight deals from Ontario to Istanbul 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 Istanbul Airport?

    Currently, October is the cheapest month in which you can book a flight from Ontario to Istanbul Airport (average of $910). Flying from Ontario to Istanbul Airport in June is currently the most expensive (average of $1,358). 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

Traveling to a place near Istanbul Airport?

Book flights to Istanbul Airport if you plan to visit one of these locations
Yalova

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Top airline flying from Ontario to Istanbul

Discover the top airline that operate flights from Ontario to Istanbul. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated September 16, 2025.
AirlineCheapestAverageFlexibilityOn-time
United AirlinesCheapest$1,195Average$1,295FlexibilityNo cancel feeOn-time69%

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