$459 Find Cheap Flights from Chicago 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 Chicago to Istanbul departing on 2/6. 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

 
These are the airlines KAYAK users have selected most often from within our search results in flight searches from Chicago to Istanbul.
These are the airlines KAYAK users have selected most often from within our search results in flight searches from Chicago to Istanbul.
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Everything you should know

Cheapest round-trip
$684
Overall average: $991
Scandinavian Airlines
Thu 4/16Sat 4/25
ORD - IST • 2 stops
Cheapest non-stop
$686
Typical prices: $829-$1,097
Turkish Airlines
Mon 4/6Mon 4/20
ORD - IST • Non-stop
Our travelers' advice
AI-powered summary based on content written by travel experts. AI can make mistakes.
Turkish Airlines provides free Wi-Fi in business class.
IndiGo's 6E Prime bundle includes seat selection.
Expert advice
Expert advice
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Expert advice
Video guide: How to find cheap flights to Istanbul
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Top airlines
Scandinavian Airlines
Cheapest • from $684 (round-trip)
KLM
Best reviews • 7.7 score
Airline reviews
Airline reviews
+1
+1
Airline reviews
Airline reviews
+1
Top routes
ORD
-
IST
Cheapest
ORD
-
IST
Most popular
Insights
Insights
Insights
Insights
When to book
4 weeks
in advance
Our data shows that travelers who book at least 4 weeks in advance save around 19% compared to booking last minute.
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Flight Deals

Cheap Flights from Chicago to Istanbul (ORD-IST)

 
Here are some of the best deals found on KAYAK recently from the most popular airlines for round-trip flights from Chicago 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 Chicago to Istanbul

Thu, Apr 16 - Sat, Apr 25
Scandinavian Airlines Logo
11:08 am - 3:40 am
ORD
-
IST
32h 32m
2 stops
Scandinavian Airlines Logo
4:30 am - 4:10 pm
IST
-
ORD
19h 40m
1 stop
$684Scandinavian Airlines
Mon, Apr 6 - Mon, Apr 20
Turkish Airlines Logo
8:10 pm - 2:50 pm
ORD
-
IST
10h 40mnonstop
Turkish Airlines Logo
6:30 am - 9:40 am
IST
-
ORD
11h 10mnonstop
$686Turkish Airlines
Mon, Apr 13 - Tue, May 5
Scandinavian Airlines Logo
6:50 am - 3:40 am
ORD
-
IST
36h 50m
2 stops
Scandinavian Airlines Logo
4:30 am - 9:29 pm
IST
-
ORD
24h 59m
2 stops
$687Scandinavian Airlines
Sun, Feb 22 - Wed, Mar 11
Multiple Airlines Logo
7:10 pm - 8:10 pm
ORD
-
SAW
16h 00m
1 stop
Multiple Airlines Logo
9:05 am - 5:45 pm
SAW
-
ORD
16h 40m
1 stop
$688Multiple Airlines
Thu, Apr 23 - Thu, Apr 30
Scandinavian Airlines Logo
11:08 am - 3:40 am
ORD
-
IST
32h 32m
2 stops
Scandinavian Airlines Logo
4:30 am - 12:26 pm
IST
-
ORD
39h 56m
2 stops
$692Scandinavian Airlines
Wed, Jul 8 - Sun, Jul 19
Air Serbia Logo
4:40 pm - 3:55 pm
ORD
-
IST
15h 15m
1 stop
Air Serbia Logo
3:45 pm - 2:30 pm
IST
-
ORD
30h 45m
1 stop
$694Air Serbia
Wed, Mar 4 - Sun, Mar 8
Turkish Airlines Logo
8:20 pm - 4:00 pm
ORD
-
IST
10h 40mnonstop
Turkish Airlines Logo
7:35 am - 10:05 am
IST
-
ORD
11h 30mnonstop
$695Turkish Airlines
Fri, Feb 20 - Fri, Feb 27
Multiple Airlines Logo
7:20 pm - 8:10 pm
ORD
-
SAW
15h 50m
1 stop
Multiple Airlines Logo
9:05 am - 4:45 pm
SAW
-
ORD
16h 40m
1 stop
$702Multiple Airlines
Wed, Mar 4 - Sun, Mar 15
KLM Logo
4:25 pm - 5:25 pm
ORD
-
SAW
16h 00m
1 stop
KLM Logo
4:00 pm - 3:20 pm
SAW
-
ORD
31h 20m
1 stop
$723KLM
Wed, Mar 4 - Mon, Mar 16
KLM Logo
2:25 pm - 5:25 pm
ORD
-
SAW
18h 00m
2 stops
KLM Logo
9:00 am - 3:20 pm
SAW
-
ORD
14h 20m
1 stop
$727KLM
Booking Insights

KAYAK's insights & trends for Chicago to Istanbul flights

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

Find cheap flights to Istanbul
Find cheap flights to Istanbul

Planning a trip from Chicago to Istanbul? KAYAK’s data-powered insights will help you find cheap flights. Learn the best time to fly, how early to book your ticket, and other tips to secure great prices.

What is the cheapest Chicago O'Hare Intl Airport to Istanbul flight route?

Data is based on round-trip flight searches on KAYAK over the past month.

The cheapest return flight from Chicago O'Hare Intl Airport to Istanbul costs $535 on the route between Chicago O'Hare Intl Airport (ORD) and Istanbul Airport (IST). It is also the most popular route.

What’s the cheapest day of the week to fly from Chicago to Istanbul?

The average price of all round-trip flights from Chicago O'Hare Intl Airport to Istanbul clicked on KAYAK for each day over the last 12 months.

Your flight ticket price will generally be cheaper if you fly to Istanbul on a Wednesday and more expensive on a Friday. On your return trip to Chicago, you should consider flying back on a Tuesday, and avoid Saturdays for better deals.

What is the cheapest month to fly from Chicago O'Hare Intl Airport to Istanbul?

To calculate monthly average prices, KAYAK takes all prices for each month over the last year for round-trip flights from Chicago O'Hare Intl Airport to Istanbul, removes the top 0.1% to account for outliers, and then takes the median of all values for each month.

The cheapest month for flights from Chicago O'Hare Intl Airport to Istanbul is November, where tickets cost $846 (return) on average. On the other hand, the most expensive months are June and May, where the average cost of round-trip tickets is $1,347 and $1,187 respectively.

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

To calculate weekly average prices, KAYAK takes all prices for each week before departure over the last year for round-trip flights from Chicago O'Hare Intl Airport to Istanbul, removes the top 0.1% to account for outliers, and then takes the average of all the values for each week.

To get a below average price on the flight from Chicago O'Hare Intl Airport to Istanbul, you should book around 4 weeks before departure, which saves you about 19% compared to booking last minute. For the absolute cheapest price, our data suggests you should book 23 weeks before departure.

Expert advice

Expert advice for your flight from Chicago to Istanbul

 
AI-powered summary based on content written by travel experts. AI can make mistakes.
KAYAK teamed up with top travel experts to share the best tips for your journey.
Our travel experts
Robert Schrader

Robert Schrader

Expert on IndiGo

One of the web's original travel bloggers, Robert launched his first site Leave Your Daily Hell in 2009. Since then, he's expanded into destination niche sites (one each for Japan, Thailand and Taiwan), in addition to having written for the inflight magazines of Singapore Airlines and Korean Air. Overall, he's visited nearly 100 countries, and flies business as often as possible.

Gabriel Leigh

Gabriel Leigh

Expert on Turkish Airlines

Gabriel is a writer and video creator. As senior content producer for Flightradar24 and Monocle’s transport correspondent, he keeps a close eye on aviation in particular. He has also written travel articles for the likes of The New York Times. Born in New York but raised around the world, he now lives in Sweden. He’s been to 75 countries, flying 2.3 million miles on 113 airlines and through 234 airports in the process.

Good to know

Cheapest flight$451
Flight from Chicago to Istanbul Sabiha Gokcen Airport

When to book flights from Chicago to Istanbul

Are your dates flexible? Find out the best times to travel from Chicago 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 Chicago to Istanbul flights

  • Does Istanbul Airport (IST) have an airport hotel?

    IST has one hotel and sleeping pods if you want to sleep at the airport. YOTEL Istanbul Hotel is the main airport hotel, and it exists as two establishments, one airside and the other landside. The landside hotel has 277 sleep cabins and offers day rooms and overnight stays. The establishment is opposite Terminal Door 7. The airside establishment has 174 sleep cabins and also offers day rooms. IGA Sleepod in the International Terminal offers sleep pods that can be rented by the hour.

  • What are the most eco-friendly airlines flying from Chicago to Istanbul?

    On average, around 2,459 kg of carbon is emitted on flights from Chicago to Istanbul. However, you can fly more sustainably with KLM, British Airways, and American Airlines. These airlines offer eco-friendlier flights emitting 45%, 38%, and 34% less carbon per passenger on this route.

  • Does Istanbul Airport offer accessible services?

    IST is an accessible airport. Passengers with limited mobility will receive wheelchair assistance at the airport if they book this service with their airline. The airport has also provided ramps and elevators for barrier-free access to the airport complex. Passengers will also have access to reserved parking spots, accessible washrooms, accessible transport options, and call points; courtesy phones are provided in the terminal to request assistance. Guide dogs are allowed for low-vision passengers, and they also get braille signs and braille-coded elevator buttons. Hard-of-hearing passengers have video phones, visual paging services, and courtesy phones to request assistance at IST.

  • What are the transport options from Sabiha Gokcen International Airport to downtown?

    SAW is well-served by the public bus, and you can get a bus to all Istanbul hubs from the airport bus stop. Shuttles are the second option, and SAW has the white-colored Havataş shuttles available between 3:00 am and 1:00 am. You can take these shuttles in front of the Arrivals exit. Taxis are also a reliable option, and they are available in the ground transportation area. All taxis are metered. If you need a rental car, head to the Arrivals level at the rental car stations.

  • What is the cheapest flight from Chicago O'Hare Intl Airport to Istanbul?

    In the last 3 days, the lowest price for a flight from Chicago O'Hare Intl Airport to Istanbul was $451 for a one-way ticket and $684 for a round-trip.

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

    Yes

  • Which airports will I be using when flying from Chicago to Istanbul?

    When flying out of Chicago you will be using Chicago O'Hare Intl. You will be landing at one of these airports: Istanbul or Istanbul Sabiha Gokcen.

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

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

  • Which airline alliances offer flights from Chicago to Istanbul?

    oneworld, SkyTeam, and Star Alliance are the airline alliances operating flights between Chicago and Istanbul, with oneworld being the most commonly used for this route.

  • What is the most popular layover when flying to Istanbul from Chicago?

    Frankfurt am Main is the most popular layover city among KAYAK users traveling from Chicago to Istanbul.

  • How does KAYAK find such low prices on flights from Chicago 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 Chicago to Istanbul.

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

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to Istanbul from Chicago 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 Chicago 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 Chicago with another airline.

  • What is KAYAK's "flexible dates" feature and why should I care when looking for a flight from Chicago 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 Chicago up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

KAYAK’s top tips for finding a cheap flight from Chicago O'Hare Intl Airport to Istanbul

  • Chicago O'Hare International Airport (ORD) has four terminals and nine concourses. The airport has an automated train that runs every 5min connecting all four terminals.
  • You can bring your pet to ORD. The airport has provided six pet relief areas, four outdoors and two indoors. The outdoor spaces are on the lower levels of Terminals 1, 2, and 5, and in the multi-modal facility. The two indoor spaces are in Terminal 3.
  • You can access banking services from Türkiye İş Bank and Yapı Kredi Bank at Sabiha Gokcen International Airport (SAW). The two banks run full-service branches at SAW, offering both currency exchange and banking services. They are both in the Arrivals Hall.
  • There are nonstop flights from Chicago to Istanbul. However, if you're taking a one-stop flight on this route, the most common layover cities are London, Munich, and Frankfurt.
  • If you're traveling with your kids through Chicago Midway International Airport (MDW), you will have access to the security family lane for a quicker transition. This service is provided for free. The airport restaurants also offer kiddie menus and high chairs for the kids.

Prefer to fly direct from Chicago to Istanbul?

 
Direct data is based off flight results for the next 60 days. Find direct flights from all airlines flying direct from Chicago O'Hare Intl to Istanbul.
Find which airlines fly direct from Chicago O'Hare Intl Airport to Istanbul, which days they fly and book direct flights.

Direct departures

Chicago O'Hare Intl to Istanbul

Monday

Turkish Airlines

Turkish Airlines

Tuesday

Turkish Airlines

Turkish Airlines

Wednesday

Turkish Airlines

Turkish Airlines

Thursday

Turkish Airlines

Turkish Airlines

Friday

Turkish Airlines

Turkish Airlines

Saturday

Turkish Airlines

Turkish Airlines

Sunday

Turkish Airlines

Turkish Airlines

See more direct flights

Direct returns

Istanbul to Chicago O'Hare Intl

Monday

Turkish Airlines

Turkish Airlines

Tuesday

Turkish Airlines

Turkish Airlines

Wednesday

Turkish Airlines

Turkish Airlines

Thursday

Turkish Airlines

Turkish Airlines

Friday

Turkish Airlines

Turkish Airlines

Saturday

Turkish Airlines

Turkish Airlines

Sunday

Turkish Airlines

Turkish Airlines

See more direct flights

Reviews of the top 5 airlines serving from Chicago to Istanbul

 
See real verified KAYAK customer reviews for airlines flying from Chicago 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 Chicago 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.
7.7
KLMOverall score based on 1444 reviews
8.4Crew
7.3Food
7.8Boarding
7.6Comfort
7.1Entertainment
Airline reviews

I’m grateful for the KLM Air France shuttle bus service to Ottawa. However due to construction and other issues related to the chaotic Uber pickup system at YUL, it’s a challenge to find the Kelios bus service to Ottawa. The signs are not clear or even available. No staff to guide passengers. It’s a stressful experience.

4.0 OkayShereen, Dec 2025
Read more KLM reviews

I’m grateful for the KLM Air France shuttle bus service to Ottawa. However due to construction and other issues related to the chaotic Uber pickup system at YUL, it’s a challenge to find the Kelios bus service to Ottawa. The signs are not clear or even available. No staff to guide passengers. It’s a stressful experience.

Flight was on time, staff are friendly and helpful onboard.

Delay and had to run between flight to get my connection due to this delay but besides that the overall experience was ok. I arrived with just an hour of delay.

Flight was ok but lack of communication cost me to literally beg to be put on another flight as connecting flight had departed

They forgot to serve food and the crew was very unfriendly. Never experienced such a bad KLM flight. Usually fly from Toronto. New York was different.

Couldn’t get boarding pass in SLC even with help from a redcoat, so had to find a desk in AMS to get boarding pass. Technical problems so not sure why. Very inconvenient. The KLM app is not as user friendly as most apps. Also had to wait almost an hour on the tarmac for a fuel truck, which caused us to miss a connecting bus in LUX.

Over 1 Hr delay. No APU so no AC on ground. Plane was hot during boarding and then they closed the doors over 20 minutes before engine start so interior of plane was steamy hot and stuffy. Could have been helped by opening doors until ready to depart.

First of all we couldn’t check in online, then we learn at the airport we were on stand by for KLM’s mistake of overbooking. The seats were not comfy at all. Our luggage got lost.

Ad experience - been flying many years with them but they are losing out to other carriers with their service and bagage / seating policy. My 2 12-yo kids were not placed with the parent. Absurdity.

Our first flight was delayed so we missed our connecting flight. However it was easy to book a later flight on their app.

Krakow airport is very disorganized. nice seats. friendly crew. long legs had screens. short leg did not

Stuck on a plane for 6 hours due to a technical or mechanical issue.

Boarding was a madhouse. Airport staff was completely disinterested in communicating about the delays. Never again.

The seats are very narrow. Communication regarding bids for better seating could be better

Smooth flight, excellent crew and good food. Not enough space; sitting are too small.

Flight was delayed for a hour from Warsaw, not sure why. When we landed in Chicago, plane was still on the runway for about half a hour. Took a while to get off.

Crew was excellent. Business class was poor on the short flight and mediocre at best on the international flight.

Very poor. Seats like economy class, food unbeatable, no charging, no entertainment, no WiFi, boarding by bus - no justification for calling and pricing this as business class

The flight itself was pleasant and on time. Crew was very good. However, breakfast food was barely acceptable. Unfortunately this satisfies the recent industry standards. I asked for a sandwich with ham (another choice was cheese), but received a sandwich with roast beef.

During the flight, the fleas biting me in the plane.

I was fully checked in the prior night and i was unchecked and then didn’t have a seat when I boarded. Instead of an aisle seat, I was out in the middle seat of the very last row of the plane.

In overall it was a good experience, the only down point was that the entertainment screen was working properly.

They lost my luggage, so, not happy. The crew was nice but my suitcases never made it, still trying to find out what happened!

I understand weather is an issue, but making us chase our plane down at five scheduled gates across three terminals in an airport the size of O'Hare was unfair. They'd have probably been better off to leave gates as TBD until the inbound plane is in final approach instead of running us all over the place. Also, props to the consistently-unprepared ground crew in Richmond for once again leaving my lane parked short of the gate because they couldn't have a crew in place on time with 2 hours notice...

cabin crew was OK, food was OK, the trip from the US to Munich was actually pretty bad comfort wise. Noisy aircraft, lights never dimmed even in Business class (night flight) barely sufficient amenities for the price. I have millions of miles with United but TBH American is gaining ground and Delta has always been marginally better then United although on paper United has more longes and cheaper upgrades.

Essy to get on. The hostess gave very little pop, the plane was late getting in, and we are still waiting for our bags. This sucks. :/

Not United Airlines' fault. It's ORL airport's fault.

Great flight. On time boarding. Smooth flight and on time arrival at EWR. The flight crew was marvelous and there was a great selection of movies on the entertainment system. Our bags were at the carousel before we got there. Another excellent flight from United.

I liked the snacks and the flight attendants were friendly.

The movies offered were great. Staff were very pleasant and very efficient.

Typically good service onboard but baggage delay in airport was significant

My, Syed Zawar Hussein Shirazi frequently flyer membership number was not included on my boarding pass from O’Hare to Istanbul despite my reminder to the attendant at check in. Further she forgot to give me my boarding pass form Istanbul to Lahore and she needs to improve her customer service, please 🙏

Everything about that day was great I was happy with how things went as a first time traveling with the airline thank you for all that you’ve doing by taking us there to our various destinations thanks.

Service was slow and checked bag was off last evening when flying business

Turkish Airline canceled our tickets in the very last minute, with our luggage and everything else, all prepared and good to go. It’s clear that they sold the tickets for better money to someone else. Bad, Bad, Bad business!!!

Awful seating. Bad food. Staff only have one bottle of water and no cans.

it was like a banya -so hot... They did provide a great experience with special food. one toilet broke midflight In general it was a peaceful and relaxing flight - for business class it was good.

Chicago to Istanbul was a much better experience than I expected since I’m more accustomed to Qatar Airways business class. The business lounge in the Istanbul airport was amazing - loved the lockers and phone charging stations, and the bathroom was a spa experience in itself. The onward leg from Istanbul to Karachi was utterly disappointing. Terrible plane, and I felt like I was in economy - the seats don’t come near to lying flat and the food was mediocre. What a sad downgrade - it isn’t as though the ticket on that leg was cheaper. So, on that front, there’s no contest with Qatar airways.

Second leg of Turkish Airline with Indigo is disaster for following reason. 1) You have to carry your cabin bags through ladder to boeing 777 because it was parked somewhere in parking lot and was not given a gate to board passengers and this seems to be people traveling to and fro from those flights and is not issue with flight itself. 2) I choose non vegetarian food on Turkish portal way ahead of checkin to entire trip, However the Indigo flight gave me random veg food saying they code veg food code from Turkish. 3) Indigo did not served any alcoholic beverages stating some weird reason which is non nonsensical. 4)Indigo have TV screens in front of you but it displays nothing except "Welcome Onboard" with annoying white black ground in dark flight. This is the most stupidest and annoying part because you are held hostage for 7 hours and only thing you could do is stare back at white screen which does not have entertainment package or even flight tracker. Such a shame.

Overall it was good. Food was bad. I ordered gluten free vegetarian meal. But I got gluten free chicken for my long flight from Seattle to Istanbul. I don’t eat any kind of meat. Second meal I got eggplant with meat which I couldn’t eat. I don’t understand why we can’t get gluten free vegetarian meal for a 12 hour flight. I eat the bread and that was it.

Service and food were excellent. Incredibly friendly and competent staff. Flight was delayed over and hour and I had to run between terminals to get my connecting flight.

Missed it by a couple minutes and couldn’t find an alternative flight so had to spend the night in DC and after much shuffling from 1 airline to another managed to get a United to Frankfurt.

There were only 2 toilets and one of them did not work in business class. We are not allowed to cross classes so had to wait in line to use the toilets!! The entertainment touch display was finicky and did not work all the time.

We missed our flight. There was not enough time built into the layover to get through immigration, customs, bagclaim, bag rechecking, and the long trip to another terminal and gate. Kayak really screwed up. We took the bus up to Wisconsin and then were picked up in Brookfield by private car. It was lucky we didnt miss the last bus out.

I tried both on line and by calling the Customer Service line to arrange for a special meal as i have food intolerances. I was under the impression from your service representative that I was successful. I was not. I cannot eat spicy foods and get very ill if i eat bell peppers. I could not eat either menu choice and no special meal was actually ordered. ( your representative tried to order it for a flight that did not have meal service!!! - found this out later). Your wonderful cabin crew managed to put together a fruit, salad, roll and cheese tray for me so I had something to eat. WHY WOULD YOU SERVE SPICY FOOD, WITH NO MILDER OPTION,ON AN INTERNATIONAL FLIGHT???

I liked Quiet people around me. Crew could have helped people with overhead luggage so they aren't moving other peoples bags around and causing problems for people that had there bags there first

The plane was delayed by two hours in Chicago which led to us missing the next flight. Lufthansa rebooked the flight and booked us a hotel for the night in Frankfurt. The level of customer service and getting us taken care of was superb. The flight crew and the service on the ground was superb.

The row of seats were so cramped it was difficult to get in and out of your seat. I even upgraded. A long flight and sad accommodations 😵‍💫 the shorter flight was very comfortable and the seating was spacious

No entertainment since it was a 3 hr flight. Good leg room for economy.

I have flown with many airlines. My first time was several years ago. Now I remember why I avoided them for so long. Lufthanza is the only airline who has ever raised a size/weight issue with my modest standard size carry on. I had to repack three times to meet their carry-on weight criteria. (Apparently the rules of physics apply differently on Lufthansa flight than on other airlines.) In the meantime their staff was quite rude, repeating meaningless phrases like "Rules are Rules." And ignoring the additional fact that weight is also weight, whether it is in found in your carry on or in your suitcase. They eventually acknowledged that customer service and satisfaction is, for them, a low priority. Never choosing Lufthansa again.

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

Information on your arrival and departure airports