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Cheap flights from Chicago to Kos from $936

This is the cheapest round-trip flight price found by a momondo user in the last 72 hours by searching for a flight from Chicago to Kos departing on 7/6. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
1 adult
0 bags

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Find the cheapest flights from Chicago to Kos

Cheap round-trip flights

Enter your travel dates to find the best prices.
SWISS Logo
7:05 pm - 7:40 pm
ORD
-
KGS
16h 35m
1 stop
SWISS Logo
11:00 am - 12:35 pm
KGS
-
ORD
33h 35m
1 stop
$936SWISS
Mon, Jul 6 - Thu, Sep 17
Austrian Airlines Logo
12:57 pm - 8:20 pm
ORD
-
KGS
23h 23m
2 stops
Austrian Airlines Logo
10:00 am - 1:20 pm
KGS
-
ORD
35h 20m
1 stop
$959Austrian Airlines
Wed, Sep 9 - Sun, Oct 4
Multiple Airlines Logo
3:45 pm - 10:10 pm
ORD
-
KGS
22h 25m
2 stops
Multiple Airlines Logo
11:00 am - 12:35 pm
KGS
-
ORD
33h 35m
1 stop
$1,103Multiple Airlines
Mon, Jul 6 - Thu, Sep 17
Multiple Airlines Logo
7:25 pm - 9:05 pm
ORD
-
KGS
17h 40m
2 stops
Multiple Airlines Logo
4:00 pm - 4:00 pm
KGS
-
ORD
32h 00m
2 stops
$1,126Multiple Airlines
Mon, Jul 6 - Thu, Sep 17
Multiple Airlines Logo
9:50 am - 9:05 pm
ORD
-
KGS
27h 15m
3 stops
Multiple Airlines Logo
4:00 pm - 4:00 pm
KGS
-
ORD
32h 00m
2 stops
$1,159Multiple Airlines
Mon, Jul 6 - Thu, Sep 17
Multiple Airlines Logo
2:20 pm - 8:50 am
ORD
-
KGS
34h 30m
3 stops
Multiple Airlines Logo
4:15 pm - 2:00 pm
KGS
-
ORD
29h 45m
3 stops
$1,218Multiple Airlines
Wed, Sep 9 - Sun, Oct 4
Multiple Airlines Logo
9:50 am - 9:05 pm
ORD
-
KGS
27h 15m
3 stops
Multiple Airlines Logo
11:15 am - 3:10 pm
KGS
-
ORD
35h 55m
3 stops
$1,258Multiple Airlines
Mon, Jul 6 - Thu, Sep 17
Multiple Airlines Logo
9:55 am - 8:15 pm
ORD
-
KGS
26h 20m
2 stops
Multiple Airlines Logo
4:15 pm - 7:50 pm
KGS
-
ORD
35h 35m
3 stops
$1,278Multiple Airlines
Sat, Jun 13 - Sat, Jun 20
Austrian Airlines Logo
6:00 pm - 8:50 pm
ORD
-
KGS
42h 50m
2 stops
Austrian Airlines Logo
10:00 am - 4:37 pm
KGS
-
ORD
38h 37m
2 stops
$1,281Austrian Airlines
Wed, Sep 9 - Sun, Oct 4
Multiple Airlines Logo
4:40 pm - 9:55 pm
ORD
-
KGS
21h 15m
2 stops
Multiple Airlines Logo
4:15 pm - 2:00 pm
KGS
-
ORD
29h 45m
3 stops
$1,303Multiple Airlines
Wed, Sep 9 - Sun, Oct 4

SWISS flights from Chicago to Kos

Our best SWISS deals on Chicago to Kos flight tickets
SWISS
Jul 6
ORD7:05 pmChicago O'Hare Intl
16h 35m
1 stop
KGS7:40 pmKos
Sep 17
KGS11:00 amKos
33h 35m
1 stop
ORD12:35 pmChicago O'Hare Intl
$936
SWISS
Jun 13
ORD7:05 pmChicago O'Hare Intl
31h 05m
1 stop
KGS10:10 amKos
Jun 20
KGS8:45 pmKos
23h 50m
1 stop
ORD12:35 pmChicago O'Hare Intl
$1,622

Emirates flights from Chicago to Kos

Our best Emirates deals on Chicago to Kos flight tickets
Emirates
Oct 18
ORD8:35 pmChicago O'Hare Intl
37h 00m
2 stops
KGS5:35 pmKos
Oct 21
KGS1:05 pmKos
34h 40m
2 stops
ORD3:45 pmChicago O'Hare Intl
$1,775
Emirates
Oct 18
ORD8:35 pmChicago O'Hare Intl
37h 00m
2 stops
KGS5:35 pmKos
Oct 21
KGS1:05 pmKos
34h 40m
2 stops
ORD3:45 pmChicago O'Hare Intl
$1,821
Emirates
Jun 12
ORD8:35 pmChicago O'Hare Intl
36h 55m
2 stops
KGS5:30 pmKos
Jun 19
KGS1:05 pmKos
34h 40m
2 stops
ORD3:45 pmChicago O'Hare Intl
$5,656

momondo 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, momondo users made 832,500 searches. Data last updated May 2, 2026.
Use the filters below to find and compare flights from Chicago to Kos that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

ChicagoKos

ORD - KGS

ORDKGS

Chicago O'Hare Intl

Mon 7/6

7:05 pm-7:40 pm

1 stop16h 35m

Kos

Thu 9/17

11:00 am-12:35 pm

1 stop33h 35m

$936

ChicagoKos

ORD - KGS

ORDKGS

Chicago O'Hare Intl

Wed 9/9

12:57 pm-8:20 pm

2 stops23h 23m

Kos

Sun 10/4

10:00 am-1:20 pm

1 stop35h 20m

$959

ChicagoKos

ORD - KGS

ORDKGS

Chicago O'Hare Intl

Mon 7/6

3:45 pm-10:10 pm

2 stops22h 25m

Kos

Thu 9/17

11:00 am-12:35 pm

1 stop33h 35m

$1,103
Quickest round-trip

ChicagoKos

ORD - KGS

ORDKGS

Chicago O'Hare Intl

Mon 7/6

7:25 pm-9:05 pm

2 stops17h 40m

Kos

Thu 9/17

4:00 pm-4:00 pm

2 stops32h 00m

$1,126

ChicagoKos

ORD - KGS

ORDKGS

Chicago O'Hare Intl

Mon 7/6

9:50 am-9:05 pm

3 stops27h 15m

Kos

Thu 9/17

4:00 pm-4:00 pm

2 stops32h 00m

$1,159

ChicagoKos

ORD - KGS

ORDKGS

Chicago O'Hare Intl

Wed 9/9

2:20 pm-8:50 am

3 stops34h 30m

Kos

Sun 10/4

4:15 pm-2:00 pm

3 stops29h 45m

$1,218

ChicagoKos

ORD - KGS

ORDKGS

Chicago O'Hare Intl

Mon 7/6

9:50 am-9:05 pm

3 stops27h 15m

Kos

Thu 9/17

11:15 am-3:10 pm

3 stops35h 55m

$1,258

ChicagoKos

ORD - KGS

ORDKGS

Chicago O'Hare Intl

Sat 6/13

9:55 am-8:15 pm

2 stops26h 20m

Kos

Sat 6/20

4:15 pm-7:50 pm

3 stops35h 35m

$1,278

ChicagoKos

ORD - KGS

ORDKGS

Chicago O'Hare Intl

Wed 9/9

6:00 pm-8:50 pm

2 stops42h 50m

Kos

Sun 10/4

10:00 am-4:37 pm

2 stops38h 37m

$1,281

ChicagoKos

ORD - KGS

ORDKGS

Chicago O'Hare Intl

Wed 9/9

4:40 pm-9:55 pm

2 stops21h 15m

Kos

Sun 10/4

4:15 pm-2:00 pm

3 stops29h 45m

$1,303

Flights are sorted by cheapest round-trip flights first.

Sorted by cheapest first

When to book flights from Chicago to Kos

Are you open to changing your travel dates? Check out the ideal times to fly from Chicago to Kos according to our flight data. Find out which month and days have the cheapest flights.
Estimated round-trip price

Cheap Chicago to Kos (CHI to KGS) flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from Chicago to Kos

Fastest flight time

16h 35m

Direct flights

None
The fastest flight from Chicago to Kos takes 16h 35m
There are no direct flights from Chicago to Kos. There are no popular flight routes from Chicago to Kos.
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Frequently asked questions about flying from Chicago to Kos

  • How far is Chicago to Kos by plane?

    The distance between Chicago and Kos is about 5619.0 mi. A reasonable flight in good conditions will take 16h 35m.

  • When did momondo last update prices for flights from Chicago to Kos Airport?

    Prices for flights from Chicago to Kos Airport are refreshed on a daily basis.

  • How old do you have to be to fly from Chicago to Kos Airport?

    The minimum age a child must be to fly alone is five but airlines that offer an unaccompanied minor (UNMR) service will have their own age restrictions, including rules around flight length, timings, and stopovers. We always recommend checking with the individual airline you are booking with to travel from Chicago to Kos Airport.

  • What documentation or ID do you need to fly to Kos Airport?

    The travel and health documents you'll need for your trip to Kos Airport may differ based on your itinerary and personal situation. Typically, you should have several documents on hand, such as a national ID card or driver's license and a passport that is valid for six months after your intended arrival at Kos Airport. It is always advisable to seek advice from your airline or a trusted third party, such as IATA.

Frequently asked questions about flying from Chicago to Kos

  • How do I get Price Alerts for flights from Chicago to Kos?

    Search flight deals from Chicago to Kos. While viewing offers you’ll have the option to create a Price Alert.

  • How can I save money on flights from Chicago to Kos with momondo?

    Leverage our AI within our “Price Forecast” tool, which predicts if it’s better to book now or wait until prices decrease. You can strategically pick the best days to fly and save money on your trip by using our “Price Calendar” tool. “Explore” shows an overview of how much it costs to fly to anywhere from a selected city or airport. Our “Discover” content is a great option for travel inspiration and money-saving tips, while “Price Alerts” will update you when prices change, so you can book when fares are right.

  • How does momondo find its flight prices?

    We compare prices from 700+ competitors to help you find the price that works best for you. momondo operates in over 30 international markets, bringing you access to a wide range of fares and deals. Search for your travel using momondo for a diverse range of options from airlines and OTAs.

Traveling to a place near Kos?

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

Why use momondo?

Why should I use momondo to find a flight deal from Chicago to Kos?

To find the flight that best suits your needs, momondo gathers a range of flights from a large pool of different airlines and agents; you can then use our insights and filters to find and book the right flight to Kos from Chicago.

Can I find flights from Chicago to Kos with flexible booking policies on momondo?

Flights from Chicago to Kos with flexible booking policies can be found by using the search form above and then selecting our dedicated flexible booking filter, which will highlight only the flights where this policy is applied.

How can momondo help me find flights from Chicago to Kos?

Once you have performed a search for Chicago to Kos flights, momondo helps you find the right one by offering useful filters to narrow down your flight selection. Flights can be filtered by multiple factors such as airline, airport and price; but also by other criteria like aircraft type and payment method.

I’m not ready to book a flight from Chicago to Kos right now. Can momondo alert me if prices change?

If you are not ready to book a flight from Chicago to Kos now, use our insights above to find helpful tips or alternatively set up a price alert, where momondo will track prices on flights to Kos and let you know when they change.

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