Cheap flights from Chicago to Kos from $757
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 5/9. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
Discover deals from 900+ travel sites with momondo.
Big names and deals
Big names and deals
Search 100s of travel sites to compare prices.Filter for what you want
Filter for what you want
Free Wi-Fi? Stopover? Instantly customize your results.Trusted and free
Trusted and free
We’re completely free to use - no hidden charges or fees.Price Alerts
Price Alerts
Not ready to book? to track prices.Find the cheapest flights from Chicago to Kos
Cheap round-trip flights
Austrian Airlines flights from Chicago to Kos
Our best Austrian Airlines deals on Chicago to Kos flight tickets
Lufthansa flights from Chicago to Kos
Our best Lufthansa deals on Chicago to Kos flight tickets
See travel insights to Kos from
How to get the cheapest flight ticket from Chicago 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 to Kos is on a Wednesday when prices can be found for as low as $982. On the other hand, Tuesday is the most expensive day to depart from Chicago because it is more convenient for both business and leisure travelers. As a result, prices tend to be around $1,444.
What is the cheapest time of day to depart on your flight to Kos?
Flying to Kos from Chicago 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 in the afternoon are generally more expensive because this time of day is more convenient for travelers’ schedules.
When to book flights from Chicago to Kos
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
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 12h 15m.
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 many operators does momondo search for flights from Chicago to Kos Airport?
As of March 2025, there is 1 operator available to choose from for flights from Chicago to Kos Airport.
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.
Best airlines flying from Chicago to Kos
Compare and see reviews for airlines that fly from Chicago to Kos with momondo
| Airline | Rating | Free Cancellation | Price | ||
|---|---|---|---|---|---|
| PriceFrom $613 | Free Cancellation | Rating 7.5 1,570 reviews |
Traveling to a place near Kos?
Book flights to Kos if you plan to visit one of these locationsWhy 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.