ORD - KGS

$915 Find Cheap Flights from Chicago to Kos

This is the cheapest round-trip flight price found by a KAYAK user in the last 72 hours by searching for a flight from Chicago to Kos departing on 10/7. 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.
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KAYAK searches hundreds of travel sites at once for deals on flights to Kos

 
These are the airlines KAYAK users have selected most often from within our search results in flight searches from Chicago to Kos, 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 Chicago to Kos, as well as popular online travel agencies
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Flights Deals

Cheap Flights from Chicago to Kos (ORD-KGS)

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

Tue, Oct 7 - Wed, Oct 15
Austrian Airlines Logo
4:20 pm - 8:50 pmORD-KGS
20h 30m1 stop
Austrian Airlines Logo
9:40 pm - 1:20 pmKGS-ORD
23h 40m1 stop
$915Austrian Airlines
Find Deal
Mon, Oct 6 - Tue, Oct 14
SWISS Logo
7:05 pm - 7:40 pmORD-KGS
16h 35m1 stop
SWISS Logo
8:30 pm - 12:10 pmKGS-ORD
23h 40m1 stop
$918SWISS
Find Deal
Wed, Oct 8 - Tue, Oct 14
 Logo
4:00 pm - 6:40 pmORD-KGS
18h 40m1 stop
 Logo
8:30 pm - 3:55 pmKGS-ORD
27h 25m1 stop
Tue, Oct 7 - Wed, Oct 15
 Logo
10:40 am - 12:40 pmORD-KGS
18h 00m2 stops
 Logo
8:40 pm - 12:10 pmKGS-ORD
23h 30m1 stop
Mon, Oct 6 - Mon, Oct 13
Lufthansa Logo
9:15 pm - 12:40 pmORD-KGS
31h 25m2 stops
Lufthansa Logo
12:40 pm - 12:30 pmKGS-ORD
31h 50m1 stop
$952Lufthansa
Find Deal
Sun, Oct 5 - Wed, Oct 15
Lufthansa Logo
3:35 pm - 11:50 amORD-KGS
12h 15m1 stop
Lufthansa Logo
7:55 pm - 7:55 pmKGS-ORD
32h 00m2 stops
$956Lufthansa
Find Deal
Mon, Oct 6 - Fri, Oct 17
SWISS Logo
2:20 pm - 7:40 pmORD-KGS
21h 20m1 stop
SWISS Logo
3:55 pm - 12:10 pmKGS-ORD
28h 15m1 stop
$978SWISS
Find Deal
Wed, Oct 8 - Fri, Oct 17
British Airways Logo
7:15 pm - 8:45 pmORD-KGS
17h 30m1 stop
British Airways Logo
1:45 pm - 3:55 pmKGS-ORD
34h 10m1 stop
$1,156British Airways
Find Deal
Mon, Oct 6 - Fri, Oct 17
British Airways Logo
8:25 pm - 8:45 pmORD-KGS
40h 20m2 stops
British Airways Logo
1:45 pm - 7:04 pmKGS-ORD
37h 19m2 stops
$1,319British Airways
Find Deal
Fri, Oct 10 - Mon, Oct 27
Emirates Logo
8:35 pm - 5:30 pmORD-KGS
36h 55m2 stops
Emirates Logo
12:35 pm - 3:45 pmKGS-ORD
34h 10m2 stops
$1,754Emirates
Find Deal
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KAYAK's insights & trends for Chicago to Kos flights

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

Which airlines provide the cheapest flights from Chicago to Kos?

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 Chicago to Kos were found on Austrian Airlines ($915) and SWISS ($918).

Good to know

Cheapest flight$915
Flight from Chicago to Kos

When to book flights from Chicago to Kos

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

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

    In the last 3 days, the lowest price for a flight from Chicago O'Hare Intl Airport to Kos was $1,011 for a one-way ticket and $915 for a round-trip.

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

    Yes, you'll most likely have to show a valid passport before boarding the plane in Chicago and on arrival in Kos.

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

    Chicago airport is called Chicago O'Hare Intl and the only airport in Kos is Kos.

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

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

  • Which airline alliances offer flights from Chicago to Kos?

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

  • How does KAYAK find such low prices on flights from Chicago to Kos?

    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 Kos.

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

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to Kos 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 Kos?

    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 Kos with an airline and back to Chicago with another airline. Booking your flights between Chicago and KGS 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 Chicago to Kos?

    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 Kos from Chicago up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

Top airline flying from Chicago to Kos

 
See real verified KAYAK customer reviews for airlines flying from Chicago to Kos. 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 Kos? 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.
7.5
SWISSOverall score based on 1590 reviews
7.0Food
7.4Comfort
7.6Boarding
8.2Crew
6.7Entertainment
Airline reviews

The cushion of the seats are old and very thin. The food can be more tasty or come with salt packages

8.0 ExcellentAnonymous, Apr 2025IAD - ZRH
Read more SWISS reviews

The cushion of the seats are old and very thin. The food can be more tasty or come with salt packages

The staff were nice people, the food was very cheap, one of the meal was a sandwich or nothing, I couldn't buy any food, mind expensive duty free WAS available right away. 🤒

The biggest let down was with booking experience through Kayak. I booked a flight with checked bags on Kayak. Right away I got a message from travel agency that the flight is not confirmed and to call them. I called them and they said the flight I have booked is no longer available with the price I have booked it for and I can book it with about $100 more. I already had other options I could book with cheaper price so I asked them to cancel my booking. Then they said I can have the ticket with the same price but a date change which was not working for me as I had to be there for a seminar. So again I said no then they said they will cover the charges and confirm my flight. When comes time for check-in I see I have no checked bag option which means the travel agency deceived me saying I can have my booking as I had booked it. And at that point I ended up paying $155 for my checked bag going back and forth. I am extremely angry and unhappy with this experience

PLEASE DONT TAKE FORCEFULLY(SIZE APPROPRIATE) CARRY ONS FROM PASSENGERS WHO FOR SOME REASON NEED TO KEEP IT

It was great. My seat was comfortable. The bathrooms were clean . The service was superb . I travel a lot and I have been in 64 counties. I wish I could fly first class, even though I could , but I prefer to budget my yearly travelling expense on actual visiting , not on flight. Anyway, my point is that your economy was far much better than other airlines as good as Air France. The flight attendants and all crew were polite and very helpful and respectful. Thank you for making my long trip tolerable.

I slept the whole flight so I can't tell you about the food and there was no entertainment offered. Crew was very nice, seats were comfortable in business, and boarding was easy.

-Swiss airlines online check in app crashed multiple times -Zurich airport does not have very many bathrooms accessible to people with disabilities - closest disability accessible bathroom to departure gate was 1/4 mile away.

It is a good airlines, very professional very good food. I wish they offered free luggage is the only thing.

I like how professional, fast and good the whole experience was.

Everything was great except food . It as okay not good not bad

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

Information on your arrival and departure airports

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