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$541+ 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 9/9. Fares are subject to change and may not be available on all flights or dates of travel.
ONT — IST
Jun 1 — Jun 81
Mon 6/1
Mon 6/8
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 May 2, 2026.

This Delta deal was found by Cheapflights users on 4/28. 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 11/49:55 am
ONT
-
IST
2 stops21h 00m
Delta
Fri 11/137:15 am
IST
-
ONT
2 stops19h 57m
Delta
Deal found 4/28$705
This Delta deal was found by Cheapflights users on 4/28. 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 11/49:55 am
ONT
-
IST
2 stops21h 00m
Delta
Sat 11/145:55 pm
IST
-
ONT
2 stops40h 53m
Delta
Deal found 4/28$755
This Delta deal was found by Cheapflights users on 4/28. 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 11/55:05 pm
ONT
-
IST
2 stops37h 50m
Delta
Fri 11/137:15 am
IST
-
ONT
2 stops19h 57m
Delta
Deal found 4/28$761
This Delta deal was found by Cheapflights users on 4/28. 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 10/296:00 am
ONT
-
IST
2 stops25h 55m
Delta
Sun 11/85:55 pm
IST
-
ONT
2 stops39h 19m
Delta
Deal found 4/28$805
This Delta deal was found by Cheapflights users on 4/28. 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 11/75:05 pm
ONT
-
IST
2 stops37h 50m
Delta
Sun 11/155:55 pm
IST
-
ONT
2 stops33h 17m
Delta
Deal found 4/28$824
This Delta deal was found by Cheapflights users on 4/28. 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 10/245:05 pm
ONT
-
IST
2 stops37h 50m
Delta
Sat 10/315:55 pm
IST
-
ONT
2 stops33h 17m
Delta
Deal found 4/28$893
This United Airlines deal was found by Cheapflights users on 4/27. 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 8/101:50 pm
ONT
-
IST
2 stops21h 35m
United Airlines
Thu 8/201:55 pm
IST
-
ONT
2 stops19h 03m
United Airlines
Deal found 4/27$913
This Delta deal was found by Cheapflights users on 4/28. 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 10/1511:55 am
ONT
-
IST
2 stops29h 35m
Delta
Fri 10/236:00 am
IST
-
ONT
2 stops20h 12m
Delta
Deal found 4/28$935
This Delta deal was found by Cheapflights users on 4/28. 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 10/237:00 am
ONT
-
IST
2 stops23h 20m
Delta
Sat 10/315:55 pm
IST
-
ONT
2 stops33h 17m
Delta
Deal found 4/28$937
This KAYAK deal was found by Cheapflights users on 4/29. 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 KAYAK is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 10/131:18 pm
ONT
-
IST
2 stops17h 37m
Lufthansa
Wed 11/256:30 am
IST
-
ONT
2 stops25h 51m
Lufthansa
Deal found 4/29$945
This Delta deal was found by Cheapflights users on 4/28. 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 10/166:00 am
ONT
-
IST
2 stops35h 30m
Delta
Fri 10/236:00 am
IST
-
ONT
2 stops20h 12m
Delta
Deal found 4/28$948
This Iberia deal was found by Cheapflights users on 4/30. 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.
Thu 12/1010:47 am
ONT
-
IST
2 stops19h 43m
Multiple Airlines
Fri 12/258:10 am
IST
-
ONT
2 stops25h 04m
Multiple Airlines
Deal found 4/30$963

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 May 2, 2026.

Round-trip from

$805
(Delta)

One-way from

$541
(Delta)

Popular in

June

Cheapest in

February

Average price

$1,128
From Ontario to Istanbul
Search Deals
One-way flight from Ontario to Istanbul
Search Deals
Highest demand for flights based on searches. 20% potential increase in price ($256 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 4% potential price decrease ($38 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in May 2026
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 May 2, 2026.
Use the filters below to find and compare flights from Ontario to Istanbul that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

OntarioIstanbul

ONT - SAW

ONTSAW

Ontario

Thu 5/28

9:50 am-5:05 pm

2 stops21h 15m

Istanbul Sabiha Gokcen

Thu 6/4

8:50 am-10:32 pm

2 stops23h 42m

$1,064

OntarioIstanbul

ONT - IST

ONTIST

Ontario

Sun 7/26

9:40 am-4:20 pm

2 stops20h 40m

Istanbul

Sun 8/23

6:00 am-6:01 pm

2 stops22h 01m

$1,067

OntarioIstanbul

ONT - IST

ONTIST

Ontario

Wed 9/2

7:00 am-1:00 pm

2 stops20h 00m

Istanbul

Fri 9/11

5:40 am-6:19 pm

2 stops22h 39m

$1,124

OntarioIstanbul

ONT - SAW

ONTSAW

Ontario

Thu 10/29

12:00 pm-12:10 pm

2 stops38h 10m

Istanbul Sabiha Gokcen

Fri 11/6

1:40 pm-6:13 pm

2 stops39h 33m

$1,129

OntarioIstanbul

ONT - IST

ONTIST

Ontario

Tue 7/7

12:35 pm-6:25 pm

2 stops19h 50m

Istanbul

Thu 8/20

8:15 am-9:12 pm

2 stops22h 57m

$1,163

OntarioIstanbul

ONT - IST

ONTIST

Ontario

Thu 9/10

7:00 am-1:00 pm

2 stops20h 00m

Istanbul

Tue 9/22

5:40 am-6:11 pm

2 stops22h 31m

$1,174
Quickest round-trip

OntarioIstanbul

ONT - IST

ONTIST

Ontario

Wed 5/13

1:30 pm-9:25 pm

2 stops21h 55m

Istanbul

Tue 6/9

1:15 pm-10:37 pm

2 stops19h 22m

$1,341

OntarioIstanbul

ONT - IST

ONTIST

Ontario

Tue 5/12

6:00 am-9:15 pm

2 stops29h 15m

Istanbul

Thu 6/11

1:15 pm-10:37 pm

2 stops19h 22m

$1,341

OntarioIstanbul

ONT - IST

ONTIST

Ontario

Wed 5/13

1:30 pm-9:25 pm

2 stops21h 55m

Istanbul

Fri 6/12

1:15 pm-10:50 pm

2 stops43h 35m

$1,341

OntarioIstanbul

ONT - SAW

ONTSAW

Ontario

Thu 5/14

1:35 pm-9:00 pm

2 stops21h 25m

Istanbul Sabiha Gokcen

Mon 5/18

8:50 am-10:34 pm

2 stops23h 44m

$1,352

Flights are sorted by cheapest round-trip flights first.

Deals found on 4/30

Showing 1-10 of 42 resultsSorted by cheapest first
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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
No data available for this route at this time. Please check back soon.

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. 0 airlines have flights to Istanbul from Ontario on a regular basis.

  • How long is the flight from Ontario to Istanbul?

    Airlines like KLM, Delta, and United Airlines fly from Ontario to Istanbul in about 20h. The time it takes to get you to your destination can typically vary by up to 1h 15m. 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.

  • 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.

See more FAQs

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