HomeSearch by dateVacation packagesHotelsFlight dealsCar rentalTravel tips & news
Kos

$713+ 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 3/4. Fares are subject to change and may not be available on all flights or dates of travel.
CHI — KGS
Jan 27 — Feb 31
Mon 1/27
Mon 2/3
1 adult, Economy
We work with more than 300 partners to bring you better travel deals

Find cheap flights from Chicago to Kos with Cheapflights

1. Tell us where you want to go
Enter your travel information like dates, passengers, trip type (one-way or round trip), and preferred cabin class then click “Find deals”
2. Select your favorite providers
We find the providers serving your travel needs. Choose up to four travel providers to compare side-by-side for flights, hotels, or car rentals.
3. Compare prices and book
Review each provider’s pricing and select the best option for you! Book through your favorite provider’s website for a seamless experience.

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 January 22, 2025.

Most accurate provider

AranGrant
3 stars

Most trusted provider

AranGrant
3 stars

Round-trip from

$713
(Trip.com)
Provider with most accurate pricing for Chicago (CHI)-Kos flight deals.
Search Deals
Provider most trusted by Cheapflights users for Chicago (CHI)-Kos flights.
Search Deals
From Chicago (CHI) to Kos
Search Deals

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 January 22, 2025.

This Trip.com deal was found by Cheapflights users on 1/21. 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.
Tue 3/411:55 amORD - KGS
2 stops25h 20mMultiple Airlines
Tue 3/1112:00 pmKGS - ORD
2 stops30h 10mMultiple Airlines
Deal found 1/21$713
This SWISS deal was found by Cheapflights users on 1/22. 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.
Tue 7/222:20 pmORD - KGS
1 stop21h 35mSWISS
Mon 8/411:00 amKGS - ORD
1 stop33h 10mSWISS
Deal found 1/22$1,048
This Lufthansa deal was found by Cheapflights users on 1/22. 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.
Sun 7/203:35 pmORD - KGS
1 stop12h 15mLufthansa
Wed 8/61:30 pmKGS - ORD
1 stop14h 25mLufthansa
Deal found 1/22$1,073
This Austrian Airlines deal was found by Cheapflights users on 1/22. 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.
Thu 7/244:20 pmORD - KGS
1 stop20h 30mAustrian Airlines
Wed 8/69:40 pmKGS - ORD
1 stop23h 40mAustrian Airlines
Deal found 1/22$1,169
This British Airways deal was found by Cheapflights users on 1/22. 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 British Airways is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 7/239:15 pmORD - KGS
1 stop15h 30mBritish Airways
Mon 8/410:00 pmKGS - ORD
1 stop21h 50mBritish Airways
Deal found 1/22$2,528

Find flights from Chicago to Kos within your budget

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 January 22, 2025.

Fly from

Any airport

Fly to

Any airport

Route

Depart

Return

Price

ChicagoKos

ORD - KGS

ORDKGS

Chicago O'Hare Intl

Tue 3/4

11:55 am-9:15 pm

2 stops25h 20m

Kos

Tue 3/11

12:00 pm-11:10 am

2 stops30h 10m

$713

ChicagoKos

ORD - KGS

ORDKGS

Chicago O'Hare Intl

Sun 7/20

3:35 pm-11:50 am

1 stop12h 15m

Kos

Wed 8/6

1:30 pm-7:55 pm

1 stop14h 25m

$1,073

ChicagoKos

ORD - KGS

ORDKGS

Chicago O'Hare Intl

Mon 7/21

2:20 pm-7:40 pm

1 stop21h 20m

Kos

Tue 8/5

8:30 pm-12:10 pm

1 stop23h 40m

$1,148

ChicagoKos

ORD - KGS

ORDKGS

Chicago O'Hare Intl

Fri 6/20

4:20 pm-5:55 pm

1 stop17h 35m

Kos

Fri 7/18

9:40 pm-1:20 pm

1 stop23h 40m

$1,590

Flights are sorted by cheapest round-trip flights first.

Deals found on 1/21

  • Most accurate provider: When it comes to deals on Chicago-Kos flights, users find the pricing of AranGrant to be most consistent on Cheapflights vs. AranGrant Users can find the same prices on Chicago-Kos flight deals on Cheapflights vs. AranGrant >95% of the time. Price accuracy is based on data collected from Chicago-Kos flight searches over the past month and is updated monthly.
  • Most trusted provider: When it comes to deals on Chicago-Kos flights, Cheapflights users trust AranGrant the most. AranGrant has received a user feedback score of 3 out of 3 stars (3 being the best), meaning they have been trusted the most by Cheapflights users looking for Chicago-Kos flight deals. Provider user feedback score is based on Cheapflights searches over the past month and is updated monthly.

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.

Travel insights for flights from Chicago to Kos

Get recent, data-driven insights about flights from Chicago to Kos including ideal travel times, pricing trends, and more.

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 January 22, 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).

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 1 airline. 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

Traveling to a place near Chicago?

Book flights to Chicago if you plan to visit one of these locations
Kardamena

Browse thousands of different options on Cheapflights for your next trip

Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.

Top airline flying from Chicago to Kos

Discover the top airline that operate flights from Chicago to Kos. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated January 22, 2025.
AirlineCheapestAverageFlexibilityOn-time
SWISSCheapest$613Average$877FlexibilityNo cancel feeOn-time79%
100% Free
Cheapflights is completely free to use, so you can start saving the moment you arrive.
Book with Flexibility
Our users can plan ahead with confidence and find flights with no change fees
Travel Smart
Millions of people come to us for their flight needs every year. We help make travel planning easy by providing useful insights and data-driven graphs that can inform your decisions.