ONT - IST

$278 Find Cheap Flights from Ontario to Istanbul

This is the cheapest one-way flight price found by a KAYAK user in the last 72 hours by searching for a flight from Ontario to Istanbul departing on 2/24. Fares are subject to change and may not be available on all flights or dates of travel. Click the price to replicate the search for this deal.
1 adult
1 adult, Economy, 0 bags

KAYAK searches hundreds of travel sites at once for deals on flights to Istanbul Airport

 
These are the airlines KAYAK users have selected most often from within our search results in flight searches from Ontario to Istanbul, as well as popular online travel agencies
These are the airlines KAYAK users have selected most often from within our search results in flight searches from Ontario to Istanbul, as well as popular online travel agencies
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Everything you should know

Cheapest round-trip
$575
United Airlines
Wed 1/7Fri 1/16
ONT - IST • 2 stops
Cheapest one-way
$278
Multiple Airlines
Tue 2/24
ONT - IST • 3 stops
Top airlines
United Airlines
Cheapest • from $575 (round-trip)
United Airlines
Best reviews • 7.4 score
Airline reviews
Airline reviews
+1
+1
Airline reviews
Airline reviews
+1
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We hope you love your trip to Istanbul!
Flight Deals
Booking Insights
Flight Deals

Cheap Flights from Ontario to Istanbul (ONT-IST)

 
Here are some of the best deals found on KAYAK recently from the most popular airlines for round-trip flights from Ontario to Istanbul that are departing in the next months. While these flights were available on KAYAK in the last 72 hours, prices and availability are subject to change and deals may expire.
Discover the best prices for you by selecting your travel dates on KAYAK.

Recent round-trip flight deals from Ontario to Istanbul

Wed, Jan 7 - Fri, Jan 16
United Airlines Logo
1:24 pm - 6:05 pmONT-IST
17h 41m2 stops
United Airlines Logo
6:30 am - 10:53 pmIST-ONT
27h 23m2 stops
$575United Airlines
Find Deal
Sat, Jan 17 - Sat, Jan 24
United Airlines Logo
1:53 pm - 10:45 pmONT-IST
21h 52m2 stops
United Airlines Logo
6:30 am - 5:51 pmIST-ONT
22h 21m2 stops
$576United Airlines
Find Deal
Mon, Dec 29 - Mon, Jan 26
United Airlines Logo
6:39 pm - 5:45 pmONT-IST
36h 06m2 stops
United Airlines Logo
6:30 am - 10:53 pmIST-ONT
27h 23m2 stops
$579United Airlines
Find Deal
Tue, Jan 6 - Tue, Jan 20
United Airlines Logo
6:32 pm - 6:05 pmONT-IST
36h 33m2 stops
United Airlines Logo
6:30 am - 11:18 amIST-ONT
39h 48m3 stops
$580United Airlines
Find Deal
Tue, Jan 13 - Tue, Jan 20
Delta Logo
10:30 pm - 3:50 amONT-IST
42h 20m2 stops
Delta Logo
5:55 pm - 4:13 pmIST-ONT
33h 18m2 stops
$593Delta
Find Deal
Wed, Jan 7 - Tue, Jan 13
Delta Logo
7:30 am - 3:50 amONT-IST
33h 20m2 stops
Delta Logo
4:50 am - 10:29 pmIST-ONT
28h 39m2 stops
$599Delta
Find Deal
Wed, Jan 7 - Tue, Jan 13
Delta Logo
7:30 am - 3:50 amONT-IST
33h 20m2 stops
Delta Logo
5:55 pm - 9:07 pmIST-ONT
38h 12m2 stops
$601Delta
Find Deal
Thu, Feb 26 - Mon, Mar 9
Delta Logo
6:00 am - 3:50 amONT-IST
34h 50m2 stops
Delta Logo
5:55 pm - 9:14 pmIST-ONT
37h 19m2 stops
$659Delta
Find Deal
Thu, Jan 1 - Fri, Jan 16
United Airlines Logo
8:11 am - 10:45 pmONT-IST
27h 34m2 stops
United Airlines Logo
6:30 am - 12:17 pmIST-ONT
40h 47m3 stops
$674United Airlines
Find Deal
Fri, Jan 9 - Wed, Jan 21
United Airlines Logo
1:53 pm - 10:45 pmONT-IST
21h 52m2 stops
United Airlines Logo
6:30 am - 8:58 pmIST-ONT
25h 28m2 stops
$675United Airlines
Find Deal
Booking Insights

KAYAK's insights & trends for Ontario to Istanbul flights

Get data-powered insights and trends into flights from Ontario to Istanbul to help you find the cheapest flights, the best time to fly and much more.

Which airlines provide the cheapest flights from Ontario to Istanbul?

The cheapest round-trip price for the route for each airline clicked by KAYAK users in the last 72 hours.

In the past 3 days, the cheapest round-trip tickets from Ontario to Istanbul were found on United Airlines ($575) and Delta ($593).

Which airlines fly non-stop between Ontario and Istanbul Airport?

Airline and price data is aggregated from results in KAYAK’s search results from the last 2 weeks for round-trip flights from Ontario to Istanbul Airport.

There is just one airline that flies from Ontario to Istanbul Airport direct and that is United Airlines. The best round-trip deal found from United Airlines for the route is $775.

Good to know

Cheapest flight$278
Flight from Ontario to Istanbul

When to book flights from Ontario to Istanbul

Are your dates flexible? Find out the best times to travel from Ontario to Istanbul based on our flight data from the last year. Discover the cheapest month and even day to fly.
Estimated round-trip price
KAYAK looks at all historical flight data for each date to provide a predicted price for one-way trips or round-trips with a duration up to 40 days. While we try to provide actual minimum prices for each date, some prices are predictions and actual prices may differ.

FAQs for booking Ontario to Istanbul flights

  • What is the cheapest flight from Ontario to Istanbul Airport?

    In the last 3 days, the lowest price for a flight from Ontario to Istanbul Airport was $278 for a one-way ticket and $575 for a round-trip.

  • Do I need a passport to fly between Ontario and Istanbul?

    A passport is required to fly from Ontario to Istanbul.

  • Which aircraft models fly most regularly from Ontario to Istanbul?

    We unfortunately don’t have that data for this specific route.

  • Which airline alliances offer flights from Ontario to Istanbul?

    Star Alliance is the only airline alliance operating flights between Ontario and Istanbul.

  • How does KAYAK find such low prices on flights from Ontario to Istanbul?

    KAYAK is a travel search engine. That means we look across the web to find the best prices we can find for our users. With over 2 billion flight queries processed yearly, we are able to display a variety of prices and options on flights from Ontario to Istanbul.

  • How does KAYAK's flight Price Forecast tool help me choose the right time to buy my flight ticket from Ontario to Istanbul?

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to Istanbul from Ontario is likely to change within 7 days, so travelers know whether to wait or book now.

  • What is the Hacker Fare option on flights from Ontario to Istanbul?

    Hacker Fares allow you to combine one-way tickets in order to save you money over a traditional round-trip ticket. You could then fly to Istanbul with an airline and back to Ontario with another airline. Booking your flights between Ontario and IST can sometimes prove cheaper using this method.

  • What is KAYAK's "flexible dates" feature and why should I care when looking for a flight from Ontario to Istanbul?

    Sometimes travel dates aren't set in stone. If your preferred travel dates have some wiggle room, flexible dates will show you all the options when flying to Istanbul from Ontario up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

Reviews of the top airline flying from Ontario to Istanbul

 
See real verified KAYAK customer reviews for airlines flying from Ontario to Istanbul. Airline scores are aggregated from all reviews left by passengers on KAYAK after flying with an airline. KAYAK doesn’t show reviews that are older than 5 years. Learn how KAYAK collects reviews.
Need help choosing which airline to fly with from Ontario to Istanbul? KAYAK airline reviews give an overall score for each airline based on loads of factors, including comfort, boarding, in-flight entertainment and more, to make your decision easier. See airline scores according to verified KAYAK customer reviews.
7.4
United AirlinesOverall score based on 9015 reviews
7.3Comfort
8.1Crew
7.7Boarding
6.6Food
7.1Entertainment
Airline reviews

Older aircraft, no meal, only food was for purchase. Not impressed United.

4.0 OkayThomas, Nov 2025SFO - KOA
Read more United Airlines reviews

Older aircraft, no meal, only food was for purchase. Not impressed United.

Not pleasant trip cross country when the entertainment and WiFi system not working. No entertainment for entirety of route. Staff was rather nonchalant in that they dismissed the problem due to age of plane. It would have been nice to know this up front so I could have come prepared to read or download movies before boarding Coincidentally or not, there was a similar issue with the entertainment system on my previous flight I took on my fist leg of the trip. There are no seat TVs, so you must rely on the app when it works. United can do better. Also, what use it it to pay for boarding group 2 when half of the passengers are in the same line as you?

My experience on this United Airlines flight was highly uncomfortable, primarily due to two issues: Cabin Temperature: The temperature on the Boeing 737 MAX 8 was unacceptably high, feeling consistently around 80 degrees throughout the flight. This made sleeping impossible and significantly detracted from the experience. Seating Arrangement: Being stuck in a middle seat for a six-and-a-half-hour overnight flight compounded the discomfort. Moving forward, I will always purchase a seat assignment to avoid this situation.

Premium Plus is a really good idea for longer flights

Same as last comment. Food sucks. Quality. Not surprising most people have no clue about nourishment Clearly

The flight attendants were great, I joked with one I can’t remember her name, a blond, really sweet. I thought it was run well very professional. This was great i survived Spirit, I know for which I speak.

We were in business class. the angled seats in that class do not have a real window view & the placement of the controls are bad. But we knew that. But the food options were mediocre. The taste was fine, but the size was for a child. It’s just really feels like United is skimping on everything. Even when we were in the Polaris lounge they did not have diet sodas. They said they were out no Coke zero no Diet Coke, etc. I do not think the portion of nuts they serve on the plane could get any smaller. Really a minimal service and offer for what you’re paying for in business.

I was in first class. The outlets at my seat did not work. The plane was shabby and run down. I had prepurchsed a day subscription for internet that was not redeemable. I had to repurchase the internet for my flight and then it didn’t work anyway. Quite disappointed in what was supposed to be the launch of a great vacation.

We had to deboard 2 times due to maintenance issues. They changed the plane, and then we got deviated to LAX due to maibtenance issues on the other plane, had to sleep at LAX and los a full day.

From the first moment you interact with United Airlines, you can expect nothing less but extreme frustration. The baggage handler at the bag drop seems completely unbothered by the presence of customers waiting in line. No help was extended to load the baggage whatsoever. And if any of your bags is overweight by 0.01 pound they will make you re-distribute everything in your suitcase just to play power trip. When it was time to board no help was extended to customers to locate their seats. Moreover. It was a chaotic mess at the gate when it was unclear who should board first and everyone just bunched up, trying to get on the plane. I am sure the crew was doing their best to perform their jobs while being paid their wages however it shouldn’t be that hard to smile once or twice when you’re in the business if serving customers. It is a shame for the United States of America to have a flagship carrier of such low caliber. Our flight was also delayed by about an hour and a half due to further delays prior to our inbound flight. Being someone who has travelled for both business and leisure in Asia, Europe, and South America I have never experienced such poor quality of service.

Everything you need to know for your flight from Ontario to Istanbul

Information on your arrival and departure airports