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Kos

$308+ Cheap flights from Chicago (CHI) to Kos (KGS)

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 9/24. Fares are subject to change and may not be available on all flights or dates of travel.
CHI — KGS
Jun 17 — Jun 241
Tue 6/17
Tue 6/24
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 June 12, 2025.

Round-trip from

$1,163
(SmartFares)

One-way from

$624
(Flightnetwork)
From Chicago (CHI) to Kos
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One-way flight 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 June 12, 2025.

This Lufthansa deal was found by Cheapflights users on 6/10. 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 Lufthansa is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/109:40 pmORD - KGS
1 stop13h 45mLufthansa
Mon 10/2712:40 pmKGS - ORD
2 stops41h 10mLufthansa
Deal found 6/10$804
This Justfly.com deal was found by Cheapflights users on 6/10. 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 Justfly.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/104:00 pmORD - KGS
2 stops19h 25mMultiple Airlines
Sat 10/186:45 pmKGS - ORD
1 stop26h 35mMultiple Airlines
Deal found 6/10$868
This SWISS deal was found by Cheapflights users on 6/10. 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 SWISS is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 7/257:05 pmORD - KGS
1 stop35h 25mSWISS
Fri 8/13:55 pmKGS - ORD
1 stop28h 15mSWISS
Deal found 6/10$1,201
This Austrian Airlines deal was found by Cheapflights users on 6/12. 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 Austrian Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 7/274:20 pmORD - KGS
1 stop19h 40mAustrian Airlines
Sun 8/310:00 amKGS - ORD
1 stop35h 20mAustrian Airlines
Deal found 6/12$1,628
This Emirates deal was found by Cheapflights users on 6/10. 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 Emirates is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 7/258:35 pmORD - KGS
2 stops36h 55mEmirates
Fri 8/111:25 amKGS - ORD
2 stops36h 20mEmirates
Deal found 6/10$3,125
This Gurufare deal was found by Cheapflights users on 6/11. 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.
Thu 6/195:55 pmORD - KGS
1 stop14h 25mBrussels Airlines
Sat 6/218:35 pmKGS - ORD
1 stop23h 20mBrussels Airlines
Deal found 6/11$3,244

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 June 12, 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

Fri 10/10

9:40 pm-7:25 pm

1 stop13h 45m

Kos

Mon 10/27

12:40 pm-10:50 pm

2 stops41h 10m

$804

ChicagoKos

ORD - KGS

ORDKGS

Chicago O'Hare Intl

Fri 10/10

4:00 pm-7:25 pm

2 stops19h 25m

Kos

Sat 10/18

6:45 pm-1:20 pm

1 stop26h 35m

$868

ChicagoKos

ORD - KGS

ORDKGS

Chicago O'Hare Intl

Fri 7/25

7:05 pm-2:30 pm

1 stop35h 25m

Kos

Fri 8/1

3:55 pm-12:10 pm

1 stop28h 15m

$1,201

ChicagoKos

ORD - KGS

ORDKGS

Chicago O'Hare Intl

Sun 7/27

4:20 pm-8:00 pm

1 stop19h 40m

Kos

Sun 8/3

10:00 am-6:40 pm

2 stops40h 40m

$1,438

ChicagoKos

ORD - KGS

ORDKGS

Chicago O'Hare Intl

Fri 7/25

8:35 pm-5:30 pm

2 stops36h 55m

Kos

Fri 8/1

11:25 am-3:45 pm

2 stops36h 20m

$3,125

ChicagoKos

ORD - KGS

ORDKGS

Chicago O'Hare Intl

Wed 9/24

8:12 pm-3:55 pm

3 stops59h 43m

$308

ChicagoKos

ORD - KGS

ORDKGS

Chicago O'Hare Intl

Tue 9/30

7:05 pm-7:55 pm

1 stop16h 50m

$567

ChicagoKos

ORD - KGS

ORDKGS

Chicago O'Hare Intl

Wed 10/1

4:00 pm-6:40 pm

1 stop18h 40m

$571

Flights are sorted by cheapest round-trip flights first.

Deals found on 6/11

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

What is the cheapest time of day to fly from CHI to KGS?

Find hourly flight availability from Chicago to Kos. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated June 12, 2025.

It’s optimal to fly from Chicago to Kos at noon. By choosing this option you can save up to 35% on the cost of your flight, compared to a flight in the morning.

Rainfall in Kos by month

Plan your trip to Kos by taking into account the average rainfall totals by month.

In terms of precipitation, rainfall in Kos ranges from 0.1 - 6.7 inches per month. January is typically the wettest month, when rainfall can reach 6.7 in. July is typically the driest time to visit Kos when rainfall is around 0.1 in.

Temperature in Kos by month

Plan your trip to Kos by taking into account the average temperature totals by month.

If weather is an important factor for your trip to Kos, use this chart to help with planning. For those seeking warmer temperatures, July is the ideal time of year to visit, when temperatures reach an average of 78.8 F. Travelers looking to avoid the cold should look outside of February, when temperatures are typically at their lowest (around 50.0 F).

Reviews of airlines servicing Kos

Get insights into the airlines that provide service to Kos. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to Kos. Reviews last updated June 12, 2025.
Emirates
8.1
Very good
3,264 reviews

Food

7.8

Entertainment

8.2

Boarding

8.1

Overall

8.1

Comfort

8.0

Crew

8.3

Reviews

1 / 20
4.0
Okay

Anonymous,Dec 2024

IAD - DXB

Not so good. Flight was departed 2 hours late from DC and we missed our connecting flight from Dubai to Mumbai. Our flight Dubai to Mumbai got delayed by three hours. Once we arrived Bombay airport we didnot get all our luggage bags. We were missing two luggage bags so found out that our those two luggage bags are coming in different flight. First they gave us wrong flight information in which our missing luggage coming and wrong phone number to whom we should reach out. I spent hours and hours at the airport to find out our luggage bags. After four five hours later and hectic time at the airport to get our luggage bags. Overall poor communication with emirates staff at the airport and no one is helpful.
Emirates
8.1
Very good
3,264 reviews
Emirates
8.1
Very good
3,264 reviews

Food

7.8

Entertainment

8.2

Boarding

8.1

Overall

8.1

Comfort

8.0

Crew

8.3

Reviews

1 / 20
4.0
Okay

Anonymous,Dec 2024

IAD - DXB

Not so good. Flight was departed 2 hours late from DC and we missed our connecting flight from Dubai to Mumbai. Our flight Dubai to Mumbai got delayed by three hours. Once we arrived Bombay airport we didnot get all our luggage bags. We were missing two luggage bags so found out that our those two luggage bags are coming in different flight. First they gave us wrong flight information in which our missing luggage coming and wrong phone number to whom we should reach out. I spent hours and hours at the airport to find out our luggage bags. After four five hours later and hectic time at the airport to get our luggage bags. Overall poor communication with emirates staff at the airport and no one is helpful.
Austrian Airlines
7.6
Good
802 reviews
Emirates
8.1
Very good
3,264 reviews

Food

7.8

Entertainment

8.2

Boarding

8.1

Overall

8.1

Comfort

8.0

Crew

8.3

Reviews

1 / 20
4.0
Okay

Anonymous,Dec 2024

IAD - DXB

Not so good. Flight was departed 2 hours late from DC and we missed our connecting flight from Dubai to Mumbai. Our flight Dubai to Mumbai got delayed by three hours. Once we arrived Bombay airport we didnot get all our luggage bags. We were missing two luggage bags so found out that our those two luggage bags are coming in different flight. First they gave us wrong flight information in which our missing luggage coming and wrong phone number to whom we should reach out. I spent hours and hours at the airport to find out our luggage bags. After four five hours later and hectic time at the airport to get our luggage bags. Overall poor communication with emirates staff at the airport and no one is helpful.
SWISS
7.5
Good
1,623 reviews
Emirates
8.1
Very good
3,264 reviews

Food

7.8

Entertainment

8.2

Boarding

8.1

Overall

8.1

Comfort

8.0

Crew

8.3

Reviews

1 / 20
4.0
Okay

Anonymous,Dec 2024

IAD - DXB

Not so good. Flight was departed 2 hours late from DC and we missed our connecting flight from Dubai to Mumbai. Our flight Dubai to Mumbai got delayed by three hours. Once we arrived Bombay airport we didnot get all our luggage bags. We were missing two luggage bags so found out that our those two luggage bags are coming in different flight. First they gave us wrong flight information in which our missing luggage coming and wrong phone number to whom we should reach out. I spent hours and hours at the airport to find out our luggage bags. After four five hours later and hectic time at the airport to get our luggage bags. Overall poor communication with emirates staff at the airport and no one is helpful.
Brussels Airlines
7.4
Good
355 reviews
Emirates
8.1
Very good
3,264 reviews

Food

7.8

Entertainment

8.2

Boarding

8.1

Overall

8.1

Comfort

8.0

Crew

8.3

Reviews

1 / 20
4.0
Okay

Anonymous,Dec 2024

IAD - DXB

Not so good. Flight was departed 2 hours late from DC and we missed our connecting flight from Dubai to Mumbai. Our flight Dubai to Mumbai got delayed by three hours. Once we arrived Bombay airport we didnot get all our luggage bags. We were missing two luggage bags so found out that our those two luggage bags are coming in different flight. First they gave us wrong flight information in which our missing luggage coming and wrong phone number to whom we should reach out. I spent hours and hours at the airport to find out our luggage bags. After four five hours later and hectic time at the airport to get our luggage bags. Overall poor communication with emirates staff at the airport and no one is helpful.
Lufthansa
6.8
Okay
7,139 reviews
Emirates
8.1
Very good
3,264 reviews

Food

7.8

Entertainment

8.2

Boarding

8.1

Overall

8.1

Comfort

8.0

Crew

8.3

Reviews

1 / 20
4.0
Okay

Anonymous,Dec 2024

IAD - DXB

Not so good. Flight was departed 2 hours late from DC and we missed our connecting flight from Dubai to Mumbai. Our flight Dubai to Mumbai got delayed by three hours. Once we arrived Bombay airport we didnot get all our luggage bags. We were missing two luggage bags so found out that our those two luggage bags are coming in different flight. First they gave us wrong flight information in which our missing luggage coming and wrong phone number to whom we should reach out. I spent hours and hours at the airport to find out our luggage bags. After four five hours later and hectic time at the airport to get our luggage bags. Overall poor communication with emirates staff at the airport and no one is helpful.

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.

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