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$739+ Cheap flights from Chicago (CHI) to Kos (KGS)

This is the cheapest round-trip flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 11/16. Fares are subject to change and may not be available on all flights or dates of travel.
CHI — KGS
août 19 — août 261
mar. 8/19
mar. 8/26
1 adult, Economy
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Cheap flight deals from Chicago to Kos

Discover tips and strategies to find the most affordable flight options for your journey from Chicago (CHI) to Kos (KGS). 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 août 14, 2025.

Round-trip from

$739
(Trip.com)
From Chicago (CHI) to Kos
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Find flight deals from Chicago to Kos

Cheapest flights from Chicago to Kos
Explore the most affordable flight options available from Chicago to Kos. Find the lowest fares from popular airlines and budget airlines, with prices last updated on août 14, 2025.

This Trip.com deal was found by Cheapflights users on 8/12. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
dim. 11/164:20 pmORD - KGS
2 stops15h 25mMultiple Airlines
mer. 11/1912:00 pmKGS - ORD
2 stops33h 10mMultiple Airlines
Deal found 8/12$739
This Gurufare deal was found by Cheapflights users on 8/14. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Gurufare is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
ven. 10/104:20 pmORD - KGS
1 stop32h 50mMultiple Airlines
lun. 10/2712:40 pmKGS - ORD
1 stop13h 45mMultiple Airlines
Deal found 8/14$785
This KAYAK deal was found by Cheapflights users on 8/13. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure KAYAK is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
ven. 10/109:40 pmORD - KGS
1 stop13h 45mLufthansa
lun. 10/2712:40 pmKGS - ORD
2 stops39h 18mLufthansa
Deal found 8/13$974

Cheapflights Fare Finder

 
Customize your flight search to find flights from Chicago to Kos 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 2,558,603 searches. Data last updated août 14, 2025.
Use the filters below to find and compare flights from Chicago to Kos that are best for you.

Fly from

Chicago

Fly to

Kos

Route

Depart

Return

Price

ChicagoKos

ORD - KGS

ORDKGS

Chicago O'Hare Intl

dim. 11/16

4:20 pm-3:45 pm

2 stops15h 25m

Kos

mer. 11/19

12:00 pm-1:10 pm

2 stops33h 10m

$739

ChicagoKos

ORD - KGS

ORDKGS

Chicago O'Hare Intl

ven. 10/10

4:20 pm-9:10 am

1 stop32h 50m

Kos

lun. 10/27

12:40 pm-7:25 pm

1 stop13h 45m

$785

ChicagoKos

ORD - KGS

ORDKGS

Chicago O'Hare Intl

ven. 10/10

9:40 pm-7:25 pm

1 stop13h 45m

Kos

lun. 10/27

12:40 pm-8:58 pm

2 stops39h 18m

$974

Flights are sorted by cheapest round-trip flights first.

Deals found on 8/12

Best time to book a flight from Chicago to Kos

Have a flexible travel schedule? Discover the best time to fly to Kos from Chicago with our price prediction graph.
Estimated round-trip 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 to Kos
No data available for this route at this time. Please check back soon.

Related info for your journey

Find useful and relevant information for your journey from Chicago to Kos. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • What airport do you fly into for flights to Kos from Chicago?

    Most people fly into Kos (KGS) if they book a flight to Kos from Chicago. On average, Kos has 0 inbound flights from Chicago per day from 0 airlines. Kos is conveniently located just 12.8 mi from Kos’s city center.

  • Can I find deals for flights from Chicago to Kos that include hotel bookings?

    Yes. In addition to deals on Chicago to Kos flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from Chicago to Kos?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Chicago to Kos.

  • Can I find deals for business class flights from Chicago to Kos?

    Yes. Cheapflights offers flight deals from Chicago to Kos by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

See more FAQs

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