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$351+ Cheap flights from Ontario (ONT) to Istanbul

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 2/24. Fares are subject to change and may not be available on all flights or dates of travel.
ONT — IST
Jan 25 — Feb 11
Sun 1/25
Sun 2/1
1 adult, Economy
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Cheap 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 December 26, 2025.

This United Airlines deal was found by Cheapflights users on 12/25. 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 12/3010:42 amONT - IST
2 stops20h 03mUnited Airlines
Tue 2/106:30 amIST - ONT
2 stops22h 13mUnited Airlines
Deal found 12/25$1,156
This United Airlines deal was found by Cheapflights users on 12/25. 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 12/3110:42 amONT - IST
2 stops20h 23mUnited Airlines
Mon 2/96:30 amIST - ONT
2 stops22h 13mUnited Airlines
Deal found 12/25$1,157
This Iberia deal was found by Cheapflights users on 12/25. 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 Iberia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/307:10 amONT - SAW
2 stops24h 45mIberia
Mon 2/99:15 amSAW - ONT
2 stops35h 53mIberia
Deal found 12/25$1,325
This Iberia deal was found by Cheapflights users on 12/23. 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 Iberia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/307:10 amONT - SAW
2 stops24h 45mIberia
Fri 1/3011:25 amSAW - ONT
2 stops37h 53mIberia
Deal found 12/23$1,330
This Orbitz deal was found by Cheapflights users on 12/23. 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 Orbitz is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 12/2910:50 amONT - IST
2 stops19h 40mBritish Airways
Wed 1/147:35 amIST - ONT
2 stops23h 35mBritish Airways
Deal found 12/23$1,341
This Iberia deal was found by Cheapflights users on 12/23. 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 Iberia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/307:10 amONT - SAW
2 stops24h 45mIberia
Wed 1/2111:25 amSAW - ONT
2 stops37h 53mIberia
Deal found 12/23$1,342
This Travelocity deal was found by Cheapflights users on 12/25. 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 Travelocity is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/3010:50 amONT - IST
2 stops19h 55mBritish Airways
Mon 2/98:15 amIST - ONT
2 stops22h 55mBritish Airways
Deal found 12/25$1,357
This United Airlines deal was found by Cheapflights users on 12/23. 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 12/295:05 amONT - IST
2 stops25h 50mUnited Airlines
Sun 1/188:50 amIST - ONT
2 stops25h 03mUnited Airlines
Deal found 12/23$1,581
This Trip.com deal was found by Cheapflights users on 12/23. 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 12/297:19 pmONT - IST
1 stop35h 41mMultiple Airlines
Wed 1/143:20 pmIST - ONT
1 stop34h 48mMultiple Airlines
Deal found 12/23$1,584
This United Airlines deal was found by Cheapflights users on 12/24. 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 12/2910:42 amONT - IST
2 stops25h 03mUnited Airlines
Fri 1/99:10 amIST - ONT
2 stops19h 33mUnited Airlines
Deal found 12/24$1,591
This FlightHub deal was found by Cheapflights users on 12/23. 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 12/2412:55 pmONT - IST
2 stops41h 35mBritish Airways
Wed 12/317:35 amIST - ONT
2 stops41h 17mBritish Airways
Deal found 12/23$1,697
This Qatar Airways deal was found by Cheapflights users on 12/24. 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 Qatar Airways is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 12/2910:50 amONT - IST
2 stops44h 50mQatar Airways
Wed 1/211:50 pmIST - ONT
2 stops45h 06mQatar Airways
Deal found 12/24$1,742

Find 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 (TR5). 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 December 26, 2025.

Round-trip from

$574
(American Airlines)

One-way from

$351
(Kiwi.com)

Popular in

June

Cheapest in

February

Average price

$1,264
From Ontario to Istanbul
Search Deals
One-way flight from Ontario to Istanbul
Search Deals
Highest demand for flights based on searches. 16% potential increase in price ($202 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 3% potential price decrease ($38 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in December 2025
Search Deals

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 December 26, 2025.
Use the filters below to find and compare flights from Ontario to Istanbul that are best for you.

Fly from

Ontario

Fly to

Istanbul

Route

Depart

Return

Price

OntarioIstanbul

ONT - IST

ONTIST

Ontario

Tue 4/14

7:00 am-1:00 pm

2 stops20h 00m

Istanbul

Tue 4/28

5:40 am-9:50 pm

2 stops26h 10m

$576

OntarioIstanbul

ONT - IST

ONTIST

Ontario

Sun 1/25

1:53 pm-10:45 pm

2 stops21h 52m

Istanbul

Sun 2/8

6:30 am-5:43 pm

2 stops22h 13m

$576

OntarioIstanbul

ONT - IST

ONTIST

Ontario

Wed 2/18

1:45 pm-6:05 pm

2 stops17h 20m

Istanbul

Tue 3/3

6:30 am-5:41 pm

2 stops22h 11m

$576

OntarioIstanbul

ONT - IST

ONTIST

Ontario

Sat 1/24

1:53 pm-10:45 pm

2 stops21h 52m

Istanbul

Tue 2/3

6:30 am-8:58 pm

2 stops25h 28m

$576

OntarioIstanbul

ONT - IST

ONTIST

Ontario

Tue 3/10

1:50 pm-10:45 pm

2 stops22h 55m

Istanbul

Tue 3/17

6:30 am-8:50 pm

2 stops24h 20m

$576

OntarioIstanbul

ONT - IST

ONTIST

Ontario

Wed 2/25

1:45 pm-6:05 pm

2 stops17h 20m

Istanbul

Thu 3/12

6:30 am-8:50 pm

2 stops24h 20m

$577

OntarioIstanbul

ONT - IST

ONTIST

Ontario

Wed 2/25

1:45 pm-6:05 pm

2 stops17h 20m

Istanbul

Tue 3/10

6:30 am-5:41 pm

2 stops21h 11m

$577

OntarioIstanbul

ONT - IST

ONTIST

Ontario

Tue 2/24

1:45 pm-5:45 pm

2 stops17h 00m

Istanbul

Fri 3/13

6:30 am-10:57 pm

2 stops26h 27m

$577

OntarioIstanbul

ONT - IST

ONTIST

Ontario

Wed 2/25

1:45 pm-6:05 pm

2 stops17h 20m

Istanbul

Mon 3/9

6:30 am-5:35 pm

2 stops21h 05m

$577

OntarioIstanbul

ONT - IST

ONTIST

Ontario

Sat 1/31

1:53 pm-10:45 pm

2 stops21h 52m

Istanbul

Mon 2/9

6:30 am-5:43 pm

2 stops22h 13m

$577

Flights are sorted by cheapest round-trip flights first.

Deals found on 12/23

Showing 1-10 of 41 results
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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

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

Currently, January is the cheapest month in which you can book a flight from Ontario to Istanbul (average of $521). Flying from Ontario to Istanbul 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 December 26, 2025.

It’s typically best to fly out from Ontario to Istanbul in the afternoon. Doing so could potentially save you 27% 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 December 26, 2025.
Peruse reviews from past customers who have flown with United Airlines from Ontario to Istanbul to help guide your decision. You can also see how each airline stacks up in terms of entertainment options, comfort, food, crew/service, and boarding process.
United Airlines
7.4
Good
9,115 reviews

Boarding

7.7

Food

6.6

Overall

7.4

Comfort

7.3

Entertainment

7.1

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
9,115 reviews
United Airlines
7.4
Good
9,115 reviews

Boarding

7.7

Food

6.6

Overall

7.4

Comfort

7.3

Entertainment

7.1

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?

    For a flight from Ontario to Istanbul, you will be flying from Ontario. Ontario (ONT) is just 3.1 mi from the center of the city. Ontario is the only Ontario airport and it handles 0 outbound flights to Istanbul per day. 1 airline has flights to Istanbul from Ontario on a regular basis.

  • How long is the flight from Ontario to Istanbul?

    Airlines like United Airlines and Iberia fly from Ontario to Istanbul in about 20h. The time it takes to get you to your destination can typically vary by up to 4h 45m. The distance between Ontario and Istanbul is about 6805 mi. When browsing for deals, the options you’ll see will be for both nonstop flights and flights with stops.

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

    Currently priced at $775, United Airlines will fly you from Ontario to Istanbul and back. In addition to United Airlines, many other airlines offer competitively priced options for your trip.

  • 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?

    Currently, January is the cheapest month in which you can book a flight from Ontario to Istanbul (average of $521). Flying from Ontario to Istanbul 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

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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 December 26, 2025.
AirlineCheapestAverageFlexibilityOn-time
United AirlinesCheapest$775Average$1,195FlexibilityNo cancel feeOn-time69%

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