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$462+ 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 11/17. Fares are subject to change and may not be available on all flights or dates of travel.
ONT — IST
Nov 19 — Nov 261
Wed 11/19
Wed 11/26
1 adult, Economy
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1. Tell us where you want to go

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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 October 20, 2025.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$575
(United Airlines)

One-way from

$462
(United Airlines)

Popular in

June

Cheapest in

February

Average price

$950
Provider with most accurate pricing for Ontario-Istanbul flight deals.
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Provider most trusted by Cheapflights users for Ontario-Istanbul flights.
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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 ($192 potential increase over avg. RT price).
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Cheapest flight prices on average. 3% potential price decrease ($37 potential savings vs. average RT price).
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Average for round-trip flights in October 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 October 20, 2025.

This United Airlines deal was found by Cheapflights users on 10/18. 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 11/255:05 amONT - IST
2 stops30h 40mUnited Airlines
Mon 1/266:30 amIST - ONT
2 stops25h 28mUnited Airlines
Deal found 10/18$575
This United Airlines deal was found by Cheapflights users on 10/18. 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.
Thu 12/41:50 pmONT - IST
2 stops21h 55mUnited Airlines
Mon 2/26:30 amIST - ONT
2 stops22h 13mUnited Airlines
Deal found 10/18$576
This British Airways deal was found by Cheapflights users on 10/20. 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 British Airways is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 11/232:59 pmONT - IST
2 stops22h 51mBritish Airways
Sat 12/67:35 amIST - ONT
2 stops25h 53mBritish Airways
Deal found 10/20$577
This United Airlines deal was found by Cheapflights users on 10/18. 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.
Mon 11/241:29 pmONT - IST
2 stops46h 16mUnited Airlines
Thu 1/296:30 amIST - ONT
2 stops25h 28mUnited Airlines
Deal found 10/18$580
This Delta deal was found by Cheapflights users on 10/20. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 11/2712:16 pmONT - IST
2 stops28h 34mDelta
Sun 12/74:50 amIST - ONT
2 stops28h 57mDelta
Deal found 10/20$587
This Delta deal was found by Cheapflights users on 10/19. 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.
Tue 12/26:00 amONT - IST
2 stops23h 55mDelta
Tue 12/234:50 amIST - ONT
2 stops28h 43mDelta
Deal found 10/19$588
This Delta deal was found by Cheapflights users on 10/17. 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.
Mon 11/246:00 amONT - IST
2 stops23h 55mDelta
Wed 12/105:55 pmIST - ONT
2 stops33h 14mDelta
Deal found 10/17$589
This Delta deal was found by Cheapflights users on 10/20. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 11/2610:25 pmONT - IST
2 stops42h 25mDelta
Sun 12/74:50 amIST - ONT
2 stops28h 57mDelta
Deal found 10/20$593
This Delta deal was found by Cheapflights users on 10/20. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 11/2610:25 pmONT - IST
2 stops42h 25mDelta
Fri 12/55:55 pmIST - ONT
2 stops39h 00mDelta
Deal found 10/20$594
This Delta deal was found by Cheapflights users on 10/19. 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 11/167:05 amONT - IST
2 stops33h 45mDelta
Wed 12/34:50 amIST - ONT
2 stops22h 19mDelta
Deal found 10/19$600
This Delta deal was found by Cheapflights users on 10/20. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 11/2411:46 amONT - IST
2 stops53h 04mDelta
Sun 12/74:50 amIST - ONT
2 stops28h 57mDelta
Deal found 10/20$605
This Delta deal was found by Cheapflights users on 10/20. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 11/245:49 pmONT - IST
2 stops47h 01mDelta
Wed 12/34:50 amIST - ONT
2 stops28h 57mDelta
Deal found 10/20$606

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 October 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 11/25

5:05 am-10:45 pm

2 stops30h 40m

Istanbul

Fri 1/30

6:30 am-8:58 pm

2 stops25h 28m

$575

OntarioIstanbul

ONT - IST

ONTIST

Ontario

Wed 11/26

5:05 am-10:45 pm

2 stops30h 40m

Istanbul

Wed 1/28

6:30 am-8:58 pm

2 stops25h 28m

$575

OntarioIstanbul

ONT - IST

ONTIST

Ontario

Tue 11/25

5:05 am-10:45 pm

2 stops30h 40m

Istanbul

Tue 1/27

6:30 am-8:58 pm

2 stops25h 28m

$575

OntarioIstanbul

ONT - IST

ONTIST

Ontario

Mon 11/24

1:29 pm-10:45 pm

2 stops46h 16m

Istanbul

Mon 1/26

6:30 am-8:58 pm

2 stops25h 28m

$580

OntarioIstanbul

ONT - IST

ONTIST

Ontario

Sun 11/16

1:40 pm-10:45 pm

2 stops22h 05m

Istanbul

Wed 11/26

6:30 am-3:21 pm

2 stops43h 51m

$580

OntarioIstanbul

ONT - IST

ONTIST

Ontario

Mon 11/24

1:29 pm-10:45 pm

2 stops46h 16m

Istanbul

Tue 1/27

6:30 am-8:58 pm

2 stops25h 28m

$580

OntarioIstanbul

ONT - IST

ONTIST

Ontario

Tue 12/2

6:00 am-4:55 pm

2 stops23h 55m

Istanbul

Wed 12/24

4:50 am-7:50 pm

2 stops26h 00m

$588

OntarioIstanbul

ONT - IST

ONTIST

Ontario

Tue 1/6

10:30 pm-3:50 am

2 stops42h 20m

Istanbul

Sun 1/18

4:50 am-11:52 pm

2 stops30h 02m

$592

OntarioIstanbul

ONT - IST

ONTIST

Ontario

Sun 11/16

5:05 am-10:45 pm

2 stops30h 40m

Istanbul

Tue 11/25

6:30 am-10:31 pm

2 stops27h 01m

$650

OntarioIstanbul

ONT - IST

ONTIST

Ontario

Mon 11/17

5:05 am-10:45 pm

2 stops30h 40m

Istanbul

Thu 11/27

6:30 am-5:34 pm

2 stops22h 04m

$650

Flights are sorted by cheapest round-trip flights first.

Deals found on 10/18

Showing 1-10 of 21 results
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Compare providers for flights from Ontario to Istanbul

Provider information is updated monthly. Please note that these providers often have deals for this flight, but the availability may vary on a day-by-day basis on Cheapflights.
Use the table below to compare price accuracy, trust ratings, and cancellation policies for each provider offering flight deals from Ontario to Istanbul in October.
ProviderPrice AccuracyTrust Score*
ExpediaPrice Accuracy2 starsTrust Score*3 stars
FlightHubPrice Accuracy3 starsTrust Score*3 stars
eDreamsPrice Accuracy3 starsTrust Score*3 stars
AranGrantPrice Accuracy3 starsTrust Score*3 stars

*The Trust Score is based on feedback from users after their booking experience. It measures overall satisfaction, helping us identify issues like hidden fees, problems during the ticketing process, and the quality of customer service. This score is our best indicator of the provider's quality and reliability.

  • Most accurate provider: When it comes to deals on Ontario-Istanbul Airport flights, users find the pricing of FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on Ontario-Istanbul Airport flight deals on Cheapflights vs. FlightHub >95% of the time. Price accuracy is based on data collected from Ontario-Istanbul Airport flight searches over the past month and is updated monthly.
  • Most trusted provider: When it comes to deals on Ontario-Istanbul Airport flights, Cheapflights users trust FlightHub the most. FlightHub has received a user feedback score of 3 out of 3 stars (3 being the best), meaning they have been trusted the most by Cheapflights users looking for Ontario-Istanbul Airport flight deals. Provider user feedback score is based on Cheapflights searches over the past month and is updated monthly.

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 $610). Flying from Ontario to Istanbul Airport in July is currently the most expensive (average of $906). 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 October 20, 2025.

It’s typically best to fly out from Ontario to Istanbul Airport in the afternoon. Doing so could potentially save you 20% 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 October 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
8,991 reviews

Food

6.6

Entertainment

7.1

Overall

7.4

Comfort

7.3

Boarding

7.7

Crew

8.1

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
8,991 reviews
United Airlines
7.4
Good
8,991 reviews

Food

6.6

Entertainment

7.1

Overall

7.4

Comfort

7.3

Boarding

7.7

Crew

8.1

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 30h 40m. 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 $775 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 $610). Flying from Ontario to Istanbul Airport in July is currently the most expensive (average of $906). 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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Alternative routes for Ontario to Istanbul

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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 October 20, 2025.
AirlineCheapestAverageFlexibilityOn-time
United AirlinesCheapest$775Average$1,195FlexibilityNo cancel feeOn-time69%

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