ONT - IST

$576 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 12/27. 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

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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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

Tue, Nov 18 - Thu, Nov 27
United Airlines Logo
1:33 pm - 5:45 pmONT-IST
17h 12m2 stops
United Airlines Logo
6:30 am - 5:34 pmIST-ONT
22h 04m2 stops
$725United Airlines
Find Deal
Tue, Dec 2 - Tue, Dec 16
United Airlines Logo
1:50 pm - 10:45 pmONT-IST
21h 55m2 stops
United Airlines Logo
6:30 am - 5:37 pmIST-ONT
22h 07m2 stops
$726United Airlines
Find Deal
Wed, Jan 28 - Wed, Feb 11
British Airways Logo
5:03 pm - 12:25 amONT-IST
20h 22m2 stops
British Airways Logo
7:35 am - 5:53 pmIST-ONT
21h 18m2 stops
$727British Airways
Find Deal
Sun, Mar 15 - Fri, Mar 20
KLM Logo
10:30 pm - 4:55 pmONT-IST
32h 25m2 stops
KLM Logo
4:50 am - 10:38 pmIST-ONT
27h 48m2 stops
$738KLM
Find Deal
Mon, Nov 17 - Mon, Nov 24
British Airways Logo
4:47 pm - 12:05 amONT-IST
20h 18m2 stops
British Airways Logo
6:40 pm - 9:59 pmIST-ONT
38h 19m2 stops
$755British Airways
Find Deal
Thu, Dec 11 - Mon, Jan 12
Delta Logo
6:40 am - 3:50 amONT-IST
34h 10m2 stops
Delta Logo
5:55 pm - 4:19 pmIST-ONT
33h 24m2 stops
$897Delta
Find Deal
Wed, Dec 10 - Mon, Jan 12
Delta Logo
12:40 pm - 3:50 amONT-IST
52h 10m2 stops
Delta Logo
5:55 pm - 10:52 pmIST-ONT
39h 57m2 stops
$903Delta
Find Deal
Fri, Mar 27 - Tue, Mar 31
KLM Logo
10:30 pm - 4:20 pmONT-IST
55h 50m2 stops
KLM Logo
4:20 am - 4:19 pmIST-ONT
21h 59m2 stops
$908KLM
Find Deal
Wed, Dec 10 - Thu, Jan 8
American Airlines Logo
7:00 am - 5:25 pmONT-IST
23h 25m2 stops
American Airlines Logo
2:35 pm - 10:01 pmIST-ONT
42h 26m2 stops
$925American Airlines
Find Deal
Sat, Dec 13 - Mon, Jan 12
American Airlines Logo
7:00 am - 8:15 pmONT-IST
26h 15m2 stops
American Airlines Logo
3:15 pm - 6:45 pmIST-ONT
38h 30m2 stops
$975American Airlines
Find Deal

Everything you should know

Top airlines
United Airlines
Cheapest • from $725 (round-trip)
United Airlines
Best reviews • 7.4 score
Airline reviews
Airline reviews
+1
+1
Airline reviews
Airline reviews
+1
Cheapest round-trip
$725
United Airlines
Tue 11/18Thu 11/27
ONT - IST • 2 stops
Cheapest one-way
$576
United Airlines
Sat 12/27
ONT - IST • 2 stops
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KAYAK searches 100s of sites at once to find you the best travel deals.
We hope you love your trip to Istanbul!
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 ($725) and British Airways ($727).

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 $1,195.

Good to know

Cheapest flight$576
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 $576 for a one-way ticket and $725 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 8924 reviews
8.1Crew
7.1Entertainment
7.7Boarding
7.3Comfort
6.6Food
Airline reviews

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.

2.0 MediocreAnonymous, Sep 2025SAN - IAH
Read more United Airlines reviews

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.

I understand stuff happens, but plane failures are likely due to lack of maintenance. Additionally, air conditioning wasn't working, no snack/drink service, no WiFi. Fortunately, the crew was communicative and light-hearted. United grabbed another plane and we were able to get to our destination.

The pilots were late and it made us 1 hour late. The meat was tough and bok choy was also tough.

Stuck on tarmac for two hours plus a 5.5 hour flight. Rude flight attendant. And no meals, not even for purchase!

I learned that seating towards the end of plane that a line forms for the restroom and people use your chair as a hand railing, bumping your seat consistently. I was seated in the aisle. I think that next time if I am towards the back row I would want to sit in the middle or window seat.

The best airline I have ever travel , really good customer service, attention and service !!

United sent me a mileage plus number last year but that number is invalid so I can’t use it to check into flights or collect mileage. There is human to speak about the problem, only computers who keep asking me if I am using the correct email. It’s so frustrating and I cannot resolve it.

Not a great experience. We paid for the upgrade for premium economy seats and seated ourselves in very comfortable seats. Someone came along with the same seat on their boarding pass. The aircraft had been changed and as a result we were booted out and sent further back to small uncomfortable seats. After complaining we were moved to emergency row seats, which gave us more leg room but the seats don’t recline. For people in our 70’s we found having to sit upright from California to NJ very uncomfortable. Not sure why they chose to move senior citizens instead of the two people that were allowed to take the more comfortable seats. Not happy.

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

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