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Cheap flights from Chicago O'Hare Intl Airport to Istanbul Airport from £375

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 15/12. Fares are subject to change and may not be available on all flights or dates of travel.
ORD — IST
13 Sep — 20 Sep1
1 adult
1 adult, Economy, 0 bags
Cheapflights Tip: The best prices from Chicago O'Hare Intl to Istanbul are usually found in March or November, booked 59 days in advance, depart on a Thursday or Tuesday and return on a Monday

Cheap flight deals from O'Hare Intl to Istanbul

Enter your travel dates to find the best prices.

Cheapest flights from O'Hare Intl to Istanbul
Explore the most affordable flight options available from O'Hare Intl to Istanbul. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 14 August 2026.

Fri 27/1121:50 -
1 stop20h 00m
Thu 10/1204:30 -
1 stop22h 55m
Deal found 11/8£633
Sun 22/1108:50 -
2 stops24h 20m
Fri 27/1106:30 -
1 stop15h 40m
Deal found 13/8£640
Mon 23/1116:20 -
1 stop16h 50m
Sun 13/1206:30 -
1 stop15h 40m
Deal found 11/8£641
Fri 27/1121:50 -
1 stop34h 20m
Mon 7/1218:30 -
1 stop28h 15m
Deal found 13/8£642
Mon 2/1117:10 -
1 stop21h 55m
Mon 9/1118:30 -
1 stop28h 15m
Deal found 12/8£643
Thu 3/1213:12 -
2 stops19h 58m
Tue 8/1206:30 -
1 stop15h 40m
Deal found 13/8£644
Wed 4/1117:47 -
2 stops19h 58m
Tue 10/1106:30 -
1 stop15h 40m
Deal found 13/8£646
Wed 2/1218:04 -
2 stops19h 41m
Sun 6/1206:30 -
2 stops22h 22m
Deal found 13/8£646
Wed 2/1216:20 -
1 stop21h 25m
Sat 12/1206:30 -
2 stops20h 51m
Deal found 9/8£649
Tue 15/1216:30 -
2 stops21h 15m
Fri 25/1206:30 -
2 stops24h 10m
Deal found 10/8£651
Fri 11/1211:15 -
2 stops26h 30m
Fri 25/1206:30 -
3 stops24h 45m
Deal found 12/8£652

Find flight deals from O'Hare Intl to Istanbul

Discover tips and strategies to find the most affordable flight options for your journey from O'Hare Intl (ORD) 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 14 August 2026.

Round-trip from

£633

One-way from

£375

Popular in

May

Cheapest in

March

Average price

£755

Good round-trip deal

£679 or less
Lufthansa
  • Lufthansa
  • 27/11-10/12
  • 2 total stops
  • 42h 55m total
  • Chicago to Istanbul
Search Deals
Delta
  • Delta
  • 15/12
  • 1 total stop
  • 14h 20m total
  • Chicago to Istanbul
Search Deals
Highest demand for flights based on searches. 14% potential increase in price (£98 potential increase over avg. return price).
Search Deals
Cheapest flight prices on average. 3% potential price decrease (£19 potential savings vs. average return price).
Search Deals
Average for round-trip flights in August 2026
Search Deals
Price to beat on a round-trip flight from Chicago O'Hare Intl to Istanbul.
Search Deals

Cheapflights Fare Finder

 
Customise your flight search to find flights from O'Hare Intl 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 858,174 searches. Data last updated 14 August 2026.
Use the filters below to find and compare flights from Chicago O'Hare Intl Airport to Istanbul Airport that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest return flight

ChicagoIstanbul

ORD Chicago O'Hare Intl - IST Istanbul

ORDIST

Chicago O'Hare Intl

Mon 1/2

11:45-07:10

Nonstop10h 25m

Istanbul

Mon 22/2

07:35-10:00

Nonstop11h 25m

£696

ChicagoIstanbul

ORD Chicago O'Hare Intl - IST Istanbul

ORDIST

Chicago O'Hare Intl

Wed 16/9

11:05-21:25

2 stops26h 20m

Istanbul

Wed 23/9

13:55-19:55

1 stop14h 00m

£717

ChicagoIstanbul

ORD Chicago O'Hare Intl - IST Istanbul

ORDIST

Chicago O'Hare Intl

Sun 13/9

14:30-21:35

2 stops23h 05m

Istanbul

Sat 26/9

05:50-19:46

2 stops21h 56m

£734

ChicagoIstanbul

ORD Chicago O'Hare Intl - IST Istanbul

ORDIST

Chicago O'Hare Intl

Tue 1/9

18:15-21:15

2 stops19h 00m

Istanbul

Thu 10/9

05:40-12:55

1 stop15h 15m

£756

ChicagoIstanbul

ORD Chicago O'Hare Intl - IST Istanbul

ORDIST

Chicago O'Hare Intl

Thu 17/9

16:05-16:55

1 stop16h 50m

Istanbul

Tue 22/9

03:45-12:35

1 stop16h 50m

£759

ChicagoIstanbul

ORD Chicago O'Hare Intl - IST Istanbul

ORDIST

Chicago O'Hare Intl

Sun 27/9

15:40-21:35

2 stops21h 55m

Istanbul

Sun 4/10

05:50-12:55

1 stop15h 05m

£762

ChicagoIstanbul

ORD Chicago O'Hare Intl - IST Istanbul

ORDIST

Chicago O'Hare Intl

Thu 17/9

11:05-13:00

2 stops17h 55m

Istanbul

Tue 22/9

13:55-19:55

1 stop14h 00m

£762
Fastest return journey

ChicagoIstanbul

ORD Chicago O'Hare Intl - IST Istanbul

ORDIST

Chicago O'Hare Intl

Tue 8/9

11:25-05:45

Nonstop10h 20m

Istanbul

Tue 29/9

06:30-09:40

Nonstop11h 10m

£763

ChicagoIstanbul

ORD Chicago O'Hare Intl - IST Istanbul

ORDIST

Chicago O'Hare Intl

Sat 19/9

22:30-21:15

1 stop14h 45m

Istanbul

Fri 2/10

05:40-23:32

2 stops25h 52m

£767

ChicagoIstanbul

ORD Chicago O'Hare Intl - IST Istanbul

ORDIST

Chicago O'Hare Intl

Wed 16/9

10:50-13:00

2 stops18h 10m

Istanbul

Mon 21/9

13:55-22:05

2 stops16h 10m

£769

Flights are sorted by cheapest return flights first.

Deals found on 13/8

Showing 1-10 of 24 resultsSorted by cheapest first
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Best time to book a flight from O'Hare Intl to Istanbul

Have a flexible travel schedule? Discover the best time to fly to Istanbul from O'Hare Intl with our price prediction graph.
Estimated return 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 Chicago O'Hare Intl Airport to Istanbul Airport

How far ahead should I book a flight from Chicago O'Hare Intl Airport to Istanbul Airport?

To ensure you get the cheapest price possible for a flight from Chicago O'Hare Intl Airport to Istanbul Airport, you should look to book at least 58 days in advance of your intended travel date. The price of your flight may increase if you delay and leave booking until a week or so before departure.

What is the cheapest month to book a flight from Chicago O'Hare Intl Airport to Istanbul Airport?

Currently, March is the cheapest month in which you can book a flight from Chicago O'Hare Intl Airport to Istanbul Airport (average of £631). Flying from Chicago O'Hare Intl Airport to Istanbul Airport in May is currently the most expensive (average of £1,051). 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 ORD to IST?

Find hourly flight availability from O'Hare Intl 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 14 August 2026.

Regardless of the time of day you decide to fly, the ticket price will remain around the same. Book flights from Chicago O'Hare Intl Airport to Istanbul Airport as you normally would.

How much does it cost for a return flight from Chicago O'Hare Intl Airport to Istanbul Airport?

Airfare is below average for this route at the moment.

Chicago O'Hare Intl Airport to Istanbul Airport flights typically cost between £654 and £843 in November.
The cheapest return price found within the last 5 days was £633 on Lufthansa (27 Nov–10 Dec).

Related info for your journey

Find useful and relevant information for your journey from O'Hare Intl to Istanbul. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • How long is the flight from Chicago O'Hare Intl Airport to Istanbul Airport?

    There are many flights that can get you from Chicago O'Hare Intl Airport to Istanbul Airport in 10h 20m. Fly via Turkish Airlines or United Airlines to get the fastest option. Chicago O'Hare Intl Airport and Istanbul Airport are separated by a distance of 5455 mi. When browsing for deals, the options you’ll see will be for both direct flights and flights with stops.

  • What are the most reliable airlines from Chicago O'Hare Intl Airport to Istanbul Airport?

    The top 3 most reliable airlines when flying from Chicago O'Hare Intl Airport to Istanbul Airport are MIAT Mongolian (80%), Uzbekistan Airways (69%) and Pakistan International Airlines (69%).

  • What are the cheapest flights from Chicago O'Hare Intl Airport to Istanbul Airport?

    While on average a flight from Chicago O'Hare Intl Airport to Istanbul Airport is generally £1,316, our data shows the cheapest flight currently is £620. When looking at the most popular route, (Chicago O'Hare Intl - Istanbul), you can expect to pay £733 for that flight.

  • Can I find deals for flights from O'Hare Intl to Istanbul that include hotel bookings?

    Yes. In addition to deals on O'Hare Intl to Istanbul flights, Cheapflights offers holiday packages that include both flights and hotel.

  • How can I find direct flights from O'Hare Intl to Istanbul?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from O'Hare Intl to Istanbul.

  • Can I find deals for business class flights from O'Hare Intl to Istanbul?

    Yes. Cheapflights offers flight deals from O'Hare Intl 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 Chicago O'Hare Intl Airport to Istanbul Airport?

    Currently, March is the cheapest month in which you can book a flight from Chicago O'Hare Intl Airport to Istanbul Airport (average of £631). Flying from Chicago O'Hare Intl Airport to Istanbul Airport in May is currently the most expensive (average of £1,051). 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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Yes! Start tracking prices for O'Hare Intl to Istanbul flights today and get alerted whenever prices for these flights change. To access this feature, click the bell icon next to the flight deals above, which will prompt you for a valid email address to receive your alerts.

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