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Cheap flights from Chicago O'Hare Intl Airport to Kos from $382

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Chicago O'Hare Intl Airport to Kos departing on 9/1. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
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Find the cheapest flights from Chicago O'Hare Intl Airport to Kos (ORD-KGS)

Cheap round-trip flights

Logo
7:05 pm - 2:30 pmORD-KGS
35h 25m1 stop
Logo
12:40 pm - 7:25 pmKGS-ORD
13h 45m1 stop
$694
Find Deal
Fri, Oct 10 - Mon, Oct 27
Logo
4:20 pm - 9:10 amORD-KGS
32h 50m1 stop
Logo
12:40 pm - 7:25 pmKGS-ORD
13h 45m1 stop
$785
Find Deal
Fri, Oct 10 - Mon, Oct 27
Logo
7:05 pm - 2:30 pmORD-KGS
35h 25m1 stop
Logo
12:40 pm - 2:10 pmKGS-ORD
32h 30m2 stops
$896
Find Deal
Fri, Oct 10 - Mon, Oct 27
Lufthansa Logo
9:40 pm - 7:25 pmORD-KGS
13h 45m1 stop
Lufthansa Logo
12:40 pm - 8:58 pmKGS-ORD
39h 18m2 stops
$974Lufthansa
Find Deal
Fri, Oct 10 - Mon, Oct 27
Lufthansa Logo
4:00 pm - 7:25 pmORD-KGS
19h 25m2 stops
Lufthansa Logo
12:40 pm - 2:10 pmKGS-ORD
32h 30m2 stops
$1,133Lufthansa
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Fri, Oct 10 - Mon, Oct 27
Logo
5:55 pm - 9:10 amORD-KGS
31h 15m2 stops
Logo
8:35 am - 9:05 pmKGS-ORD
19h 30m2 stops
$1,145
Find Deal
Fri, Oct 10 - Mon, Oct 27
Logo
5:55 pm - 9:10 amORD-KGS
31h 15m2 stops
Logo
8:35 am - 9:05 pmKGS-ORD
19h 30m2 stops
$1,146
Find Deal
Fri, Oct 10 - Mon, Oct 27
Emirates Logo
7:45 pm - 8:05 pmORD-KGS
40h 20m2 stops
Emirates Logo
12:35 pm - 2:55 pmKGS-ORD
34h 20m2 stops
$1,999Emirates
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Thu, Jan 15 - Mon, Jan 19
Logo
10:20 pm - 7:55 pmORD-KGS
37h 35m3 stops
Logo
3:15 pm - 3:06 pmKGS-ORD
30h 51m3 stops
$2,435
Find Deal
Fri, Oct 10 - Mon, Oct 27
Logo
4:52 pm - 7:55 pmORD-KGS
43h 03m2 stops
Logo
3:15 pm - 1:45 pmKGS-ORD
29h 30m3 stops
$2,441
Find Deal
Fri, Oct 10 - Mon, Oct 27

Lufthansa flights from Chicago O'Hare Intl Airport to Kos

Our best Lufthansa deals on Chicago O'Hare Intl Airport to Kos flight tickets
Lufthansa
Oct 10
ORD9:40 pmChicago O'Hare Intl
13h 45m
1 stop
KGS7:25 pmKos
Oct 27
KGS12:40 pmKos
39h 18m
2 stops
ORD8:58 pmChicago O'Hare Intl
$974
Find similar
Lufthansa
Oct 10
ORD4:00 pmChicago O'Hare Intl
19h 25m
2 stops
KGS7:25 pmKos
Oct 27
KGS12:40 pmKos
32h 30m
2 stops
ORD2:10 pmChicago O'Hare Intl
$1,133
Find similar

momondo Fare Finder

 
Customize your flight search to find flights from Chicago O'Hare Intl Airport 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 August 21, 2025.
Use the filters below to find and compare flights from Chicago O'Hare Intl Airport to Kos that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

ChicagoKos

ORD - KGS

ORDKGS

Chicago O'Hare Intl

Fri 10/10

7:05 pm-2:30 pm

1 stop35h 25m

Kos

Mon 10/27

12:40 pm-7:25 pm

1 stop13h 45m

$694

ChicagoKos

ORD - KGS

ORDKGS

Chicago O'Hare Intl

Fri 10/10

4:20 pm-9:10 am

1 stop32h 50m

Kos

Mon 10/27

12:40 pm-7:25 pm

1 stop13h 45m

$785

ChicagoKos

ORD - KGS

ORDKGS

Chicago O'Hare Intl

Fri 10/10

7:05 pm-2:30 pm

1 stop35h 25m

Kos

Mon 10/27

12:40 pm-2:10 pm

2 stops32h 30m

$896

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-8:58 pm

2 stops39h 18m

$974

ChicagoKos

ORD - KGS

ORDKGS

Chicago O'Hare Intl

Fri 10/10

4:00 pm-7:25 pm

2 stops19h 25m

Kos

Mon 10/27

12:40 pm-2:10 pm

2 stops32h 30m

$1,133

ChicagoKos

ORD - KGS

ORDKGS

Chicago O'Hare Intl

Fri 10/10

5:55 pm-9:10 am

2 stops31h 15m

Kos

Mon 10/27

8:35 am-9:05 pm

2 stops19h 30m

$1,145

ChicagoKos

ORD - KGS

ORDKGS

Chicago O'Hare Intl

Fri 10/10

5:55 pm-9:10 am

2 stops31h 15m

Kos

Mon 10/27

8:35 am-9:05 pm

2 stops19h 30m

$1,146

ChicagoKos

ORD - KGS

ORDKGS

Chicago O'Hare Intl

Thu 1/15

7:45 pm-8:05 pm

2 stops40h 20m

Kos

Mon 1/19

12:35 pm-2:55 pm

2 stops34h 20m

$1,999

ChicagoKos

ORD - KGS

ORDKGS

Chicago O'Hare Intl

Fri 10/10

10:20 pm-7:55 pm

3 stops37h 35m

Kos

Mon 10/27

3:15 pm-3:06 pm

3 stops30h 51m

$2,435

ChicagoKos

ORD - KGS

ORDKGS

Chicago O'Hare Intl

Fri 10/10

4:52 pm-7:55 pm

2 stops43h 03m

Kos

Mon 10/27

3:15 pm-1:45 pm

3 stops29h 30m

$2,441

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 13 resultsSorted by cheapest first
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See travel insights to Kos from

How to get the cheapest flight ticket from Chicago O'Hare Intl Airport to Kos

Look no further. We've gone through all the searches for this route on momondo so you have the important information and insights to find the cheapest flight ticket for your trip

What is the cheapest day to depart on your flight to Kos?

The cheapest day to depart from Chicago O'Hare Intl Airport to Kos is on a Wednesday when prices can be found for as low as $982. On the other hand, Sunday is the most expensive day to depart from Chicago O'Hare Intl Airport because it is more convenient for both business and leisure travelers. As a result, prices tend to be around $1,086.

What is the cheapest time of day to depart on your flight to Kos?

Flying to Kos from Chicago O'Hare Intl Airport in the evening is the least expensive time of day to depart. momondo users have found prices as low as $710 when looking at flights departing in the evening. If you have a flexible travel schedule, then try to avoid flying in the afternoon when prices are $1,086 on average. Flights to Kos from Chicago O'Hare Intl Airport in the afternoon are generally more expensive because this time of day is more convenient for travelers’ schedules.

When to book flights from Chicago O'Hare Intl Airport to Kos

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

Cheap Chicago O'Hare Intl Airport to Kos (ORD to KGS) flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from Chicago O'Hare Intl Airport to Kos

Direct flights

None
There are no direct flights from Chicago O'Hare Intl Airport to Kos. There are no popular flight routes from Chicago O'Hare Intl Airport to Kos.
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  • How far is Chicago O'Hare Intl to Kos by plane?

    A flight from Chicago O'Hare Intl to Kos will travel around 5624.6 mi. 13h 45m is a normal flight duration for this route.

  • When did momondo last update prices for flights from Chicago O'Hare Intl Airport to Kos Airport?

    Prices for flights from Chicago O'Hare Intl Airport to Kos Airport refresh daily.

  • How old do you have to be to fly from Chicago O'Hare Intl Airport to Kos Airport?

    The minimum age for a child to fly alone is five, but airlines that offer an unaccompanied minor (UNMR) service may have their own age limitations. Flight duration, scheduling, and layovers are among the considerations that may influence age limits. We recommend that you double-check with the airline you are booking with for travel from Chicago O'Hare Intl Airport to Kos Airport.

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

    The required travel and health documents for your Kos Airport trip may vary depending on your itinerary and personal circumstances. As a general rule, you should carry multiple documents, including a national ID card or driver's license and a passport valid for six months after your intended arrival at Kos Airport. We recommend that you seek guidance from your airline or a reliable third party such as IATA.

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?

It is quick and easy to find Chicago to Kos flights on momondo. We search and return numerous flight options from various airlines and agents. You can then use our filters to narrow your search until you have found the most convenient flight to Kos that suits you.

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 in the form on the page, momondo provides useful filters and insights. We can show you the cheapest days and times to fly as well as help filter your options to help you make an informed choice when booking flights to Kos from Chicago.

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

Yes momondo offers price alerts on flights to Kos from Chicago. After performing a search on this page you should be able to see the price alert set up feature. Simply provide a valid email address and momondo will instantly alert you when prices change.

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