580 € Cheap Flights from Chicago O'Hare International to Kos

Compare Chicago O'Hare International to Kos flight deals

Find the cheapest month or even day of the year to fly to Kos

Book the best Kos fare with no extra fees

Flight deals from Chicago O'Hare International to Kos

Looking for a cheap last-minute deal or the best return flight from Chicago O'Hare International to Kos? Find the lowest prices on one-way and return tickets right here.

Find the cheapest month to fly from Chicago O'Hare International to Kos

We’re always keeping an eye on fares, so you can find the best one in seconds. It looks like Chicago O'Hare International to Kos flights are currently cheapest in October.

Chicago to Kos: Flight information

The things to know before you go.
Cheapest flight found580 €
Cheapest month to flyAugust

Finding cheap flights from Chicago O'Hare International to Kos: Frequently asked questions

The best price we found for a return flight from Chicago O'Hare International to Kos is 580 €. This is an estimate based on information collected from different airlines and travel providers over the last 4 days and is subject to change and availability.
Currently, there are no airlines that fly direct from Chicago O'Hare International to Kos. But we found flights with one or more stops from 580 €.
As of July 2026, there are no flights flying from Chicago O'Hare International to Kos.
The cheapest month to fly from Chicago O'Hare International to Kos is usually August.
After crunching the numbers on our flight calendar, we found that it's currently cheapest to fly from Chicago O'Hare International Airport to Kos Airport on Tuesday, 25 August 2026.
No airlines currently offer direct flights between Chicago O'Hare International Airport and Kos Airport. Most routes have one or more stops.
We show every price from over 1,200 airlines and travel agents, comparing them all so you don’t have to. If you know you want to fly to Kos but you’re not ready to book, set up a Price Alert. We’ll track prices for you, and let you know when they rise or fall.

We crunched all the numbers in our flight calendar and it looks like the cheapest time to book a flight to Kos is around 40 days in advance, so don’t leave your flight to the last minute.

Currently, Icelandair offers the cheapest flight tickets to Kos.

Flying from Chicago O'Hare International Airport (ORD) to Kos Airport (KGS): what you need to know

  • Kos's timezone is UTC+2, which makes Kos eight hours ahead of Chicago.

  • For a smooth journey, arrive at the airport two hours ahead of international flights and an hour before domestic departures. This way, you'll have plenty of time to catch your ORD to KGS flight.

  • Flying during a peak time like July? Public holidays and other popular seasons can lead to longer queues at check-in and security. Play it safe and arrive up to four hours before international flights and two hours before a domestic departure.

  • We make it a breeze to book a flight with a stopover. To see all your options for tickets from Chicago O'Hare International Airport to Kos Airport, deselect 'Direct flights only.' Then, pick a flight offering a stop long enough to tour your chosen city. Worthwhile stopovers between ORD and KGS include:

    • Munich Airport

    • Dublin Airport

    • Milan Malpensa Airport

How to find the cheapest flights from Chicago O'Hare International Airport (ORD) to Kos Airport (KGS)

  • The lowest price we've found for a one-way Chicago O'Hare International Airport to Kos Airport flight is 352 €. A return fare right now is 580 €. Depending on the availability and when you book, these fares can change.

  • Don't leave everything to the last moment. You're more likely to get cheap tickets from ORD to KGS if you book early. Airlines often have some amazing early bird rates.

  • If you're flexible with your trip dates, try using the 'Whole month' search function. It'll give you the lowest price across the month when looking for a flight from Chicago O'Hare International Airport to Kos Airport.

  • Landing cheap flights from ORD to KGS is a cinch with Price Alerts. All you need to do is set up one of these automatic alerts and we'll get in touch when there's a better deal.

  • Secure the ideal flight for you with the help of the filters. To see the 'Fastest,' 'Cheapest' or 'Best' flights from Chicago O'Hare International Airport to Kos Airport, use the 'Sort by' tool. You can also filter by airline, arrival and departure times, and journey duration.

Handy information about Chicago O'Hare International Airport (ORD)

  • You'll find ORD at 10000 West O'Hare.

  • Of all flights departing from Chicago O'Hare International Airport, 70% arrive as scheduled at their destination.

  • To reach Chicago O'Hare International Airport from central Chicago, it takes around 30 minutes if you're travelling by car. This depends on traffic though. It's approximately 27 kilometres from the airport to the city centre.

  • Taking public transport? You can expect a journey time of around 45 minutes.

  • Searching for a convenient hotel near ORD? If you're boarding an early flight from Chicago O'Hare International Airport to Kos Airport, these stays will put you moments from your departure lounge:

Arriving at Kos Airport (KGS)

  • The last thing you need is a lengthy journey to your hotel if you're arriving on a late Chicago O'Hare International Airport to Kos Airport flight. Book one of these accommodation options near KGS instead:

  • Pick up a Kos Airport rental car and explore Kos and beyond with your own wheels. Abbycar, Green Motion and Caldera are well-known companies you can book with here.

  • Reserving your vehicle from Kos Airport around three weeks in advance increases your chances of getting a good deal.

When to fly to Kos Airport (KGS)

  • It's time to work out your dates for your flight from Chicago O'Hare International Airport to Kos Airport. July is the busiest month to head to Kos. If you like a more low-key vibe, go in March.

Explore more of Greece

  • Kos has plenty going for it, but there are so many other parts of Greece just waiting to be explored. Around 121 kilometres south-east of Kos, a trip to Athens will keep you on the move. Start with leading sights like Acropolis of Athens, The Parthenon and Erechtheion.

Prices shown on this page are estimated lowest prices only. Found in the last 12 days.