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$340+ 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 9/11. Fares are subject to change and may not be available on all flights or dates of travel.
ONT — IST
Aug 25 — Sep 11
Mon 8/25
Mon 9/1
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 August 20, 2025.

Round-trip from

$739
(United Airlines)

One-way from

$340
(Kiwi.com)

Popular in

June

Cheapest in

February

Average price

$1,037
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. 14% potential increase in price ($184 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 August 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 August 20, 2025.

This United Airlines deal was found by Cheapflights users on 8/19. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 11/41:33 pmONT - IST
2 stops17h 12mUnited Airlines
Wed 11/126:30 amIST - ONT
2 stops22h 04mUnited Airlines
Deal found 8/19$739
This Air France deal was found by Cheapflights users on 8/18. 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 Air France is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/291:15 pmONT - IST
2 stops17h 40mMultiple Airlines
Sun 11/94:50 amIST - ONT
2 stops22h 24mMultiple Airlines
Deal found 8/18$828
This United Airlines deal was found by Cheapflights users on 8/19. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 10/211:53 pmONT - IST
2 stops21h 27mUnited Airlines
Tue 11/46:30 amIST - ONT
2 stops22h 04mUnited Airlines
Deal found 8/19$834
This United Airlines deal was found by Cheapflights users on 8/18. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/291:40 pmONT - IST
2 stops23h 05mUnited Airlines
Mon 11/106:30 amIST - ONT
2 stops22h 04mUnited Airlines
Deal found 8/18$884
This Delta deal was found by Cheapflights users on 8/19. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 10/1211:48 amONT - IST
2 stops29h 37mDelta
Mon 10/205:05 pmIST - ONT
2 stops39h 36mDelta
Deal found 8/19$904
This Delta deal was found by Cheapflights users on 8/19. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 10/115:50 pmONT - IST
2 stops47h 35mDelta
Mon 10/205:05 pmIST - ONT
2 stops34h 05mDelta
Deal found 8/19$910
This Air France deal was found by Cheapflights users on 8/19. 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 Air France is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 11/1711:29 amONT - IST
2 stops18h 26mMultiple Airlines
Sun 11/304:50 amIST - ONT
2 stops22h 24mMultiple Airlines
Deal found 8/19$913
This United Airlines deal was found by Cheapflights users on 8/18. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 10/71:53 pmONT - IST
2 stops21h 27mUnited Airlines
Tue 10/212:00 pmIST - ONT
2 stops18h 52mUnited Airlines
Deal found 8/18$934
This United Airlines deal was found by Cheapflights users on 8/20. 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 9/171:42 pmONT - IST
2 stops21h 38mUnited Airlines
Wed 11/196:30 amIST - ONT
2 stops27h 21mUnited Airlines
Deal found 8/20$959
This Delta deal was found by Cheapflights users on 8/19. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/105:50 pmONT - IST
2 stops47h 35mDelta
Mon 10/205:05 pmIST - ONT
2 stops36h 14mDelta
Deal found 8/19$960
This United Airlines deal was found by Cheapflights users on 8/19. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/81:53 pmONT - IST
2 stops21h 27mUnited Airlines
Wed 10/222:00 pmIST - ONT
2 stops18h 52mUnited Airlines
Deal found 8/19$979
This United Airlines deal was found by Cheapflights users on 8/19. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 12/141:35 pmONT - IST
2 stops22h 10mUnited Airlines
Sun 2/16:30 amIST - ONT
2 stops24h 47mUnited Airlines
Deal found 8/19$984

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 August 20, 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

Tue 11/4

1:33 pm-5:45 pm

2 stops17h 12m

Istanbul

Wed 11/12

6:30 am-5:34 pm

2 stops22h 04m

$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 2/15

1:00 pm-10:45 pm

2 stops22h 45m

Istanbul

Sun 3/1

6:30 am-8:45 pm

2 stops25h 15m

$791

OntarioIstanbul

ONT - IST

ONTIST

Ontario

Wed 10/29

1:15 pm-4:55 pm

2 stops17h 40m

Istanbul

Sun 11/9

4:50 am-4:14 pm

2 stops22h 24m

$828

OntarioIstanbul

ONT - IST

ONTIST

Ontario

Tue 10/21

1:53 pm-9:20 pm

2 stops21h 27m

Istanbul

Tue 11/4

6:30 am-5:34 pm

2 stops22h 04m

$834

OntarioIstanbul

ONT - IST

ONTIST

Ontario

Tue 1/20

10:57 am-5:45 pm

2 stops19h 48m

Istanbul

Tue 2/3

7:35 am-5:53 pm

2 stops21h 18m

$856

OntarioIstanbul

ONT - IST

ONTIST

Ontario

Wed 10/29

1:40 pm-10:45 pm

2 stops23h 05m

Istanbul

Mon 11/10

6:30 am-5:34 pm

2 stops22h 04m

$884

OntarioIstanbul

ONT - IST

ONTIST

Ontario

Mon 2/16

10:40 am-5:55 pm

2 stops20h 15m

Istanbul

Mon 3/2

6:30 am-8:45 pm

2 stops25h 15m

$885

OntarioIstanbul

ONT - IST

ONTIST

Ontario

Mon 10/13

11:48 am-3:25 am

2 stops29h 37m

Istanbul

Mon 10/20

5:05 pm-10:22 pm

2 stops39h 17m

$904

OntarioIstanbul

ONT - IST

ONTIST

Ontario

Tue 10/14

6:37 am-3:25 am

2 stops34h 48m

Istanbul

Mon 10/20

5:05 pm-10:41 pm

2 stops39h 36m

$904

Flights are sorted by cheapest round-trip flights first.

Deals found on 8/18

Showing 1-10 of 17 results
1
2

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, November is the cheapest month in which you can book a flight from Ontario to Istanbul Airport (average of $923). Flying from Ontario to Istanbul Airport in June is currently the most expensive (average of $1,359). 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 August 20, 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 August 20, 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
8,928 reviews

Entertainment

7.1

Overall

7.4

Food

6.6

Crew

8.1

Boarding

7.7

Comfort

7.3

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
8,928 reviews
United Airlines
7.4
Good
8,928 reviews

Entertainment

7.1

Overall

7.4

Food

6.6

Crew

8.1

Boarding

7.7

Comfort

7.3

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 17h 12m. 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, November is the cheapest month in which you can book a flight from Ontario to Istanbul Airport (average of $923). Flying from Ontario to Istanbul Airport in June is currently the most expensive (average of $1,359). 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 August 20, 2025.
AirlineCheapestAverageFlexibilityOn-time
United AirlinesCheapest$1,195Average$1,295FlexibilityNo cancel feeOn-time69%

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