Cheap flights from Chicago O'Hare Intl Airport to Athens from $397

The cheapest month to fly to Athens from Chicago O'Hare Intl Airport is in November. Flight prices, which tend to average around $588, are often lower during this time because this is during the off-season. If you are unable to visit Athens during the month of November, then departing from Chicago O'Hare Intl Airport during the month February is also very affordable. Most momondo users find prices during this month for around $601.

The cheapest day to depart on your flight to Athens is on a Monday when prices can be found for as low as $1,134. This is often the case because there is less demand to fly during this day of the week. If your travel schedule is flexible, try to avoid departing on a Thursday because tickets tend to average around $1,359. These prices are subject to change though, so be sure to set up a Price Alert for flights to Athens.

Fly from Chicago O'Hare Intl to Athens Eleftherios V. for the best Chicago O'Hare Intl - Athens Eleftherios V. flight prices

You are more likely to see cheaper flights to Athens from Chicago O'Hare Intl Airport when booking weeks ahead of your departure date. In general, you can expect to find flights to Athens for around $867 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Athens from Chicago O'Hare Intl Airport for as low as $895 on momondo.

As of May 2026, prices for Chicago O'Hare Intl Airport to Athens flights are approximately 3% more expensive when compared to flights at the same time last year.

Air Serbia, TAP AIR PORTUGAL, and SAUDIA are the most popular carriers operating from Chicago O'Hare Intl to Athens Eleftherios V.

United Airlines, Turkish Airlines and Lufthansa are the top three most popular airlines that fly to Athens from Chicago O'Hare Intl Airport according to our data. United Airlines is the first choice among our users, with 46% of people opting to fly with this airline when traveling to Athens. Keep in mind that there are 19 different airlines that fly to Athens on a routine basis, so you have a few additional options to choose from.

Historically, on average around 27% of flights between Chicago and Athens have experienced a delay on any given week. The average delay length over the past 12 months has been 189 minutes.

Generally, flights departing at night tend to experience fewer delays. Flights in the evening have, in the past, seen delays more frequently in comparison.

Saturday is statistically the day of the week which experiences the fewest number of delays on this flight route. Sunday has historically seen more delays on average compared to the rest of the week.

According to our data, United Airlines have had the least number of delays on this route over the last 12 months; with about 27% of their flights experiencing any sort of delay.

Istanbul (IST) was the most common stop: 51% of momondo users choosing 1-stop flights on this route connected there.

Flights via Atlanta (ATL) offer the lowest average round-trip price of $424.

Flights connecting via Reykjavik (KEF) have the shortest average one-way travel time: 10h 45m.

Zurich (ZRH) has the shortest average layover time for this route: 1h 24m.

8 flights are operational daily from Chicago O'Hare Intl Airport to Athens as of May 2026. The most popular departure time for this route is 4:00PM, with 100% of flights per day taking off in the afternoon.

As of May 2026, there are 56 flights per week flying from Chicago O'Hare Intl Airport to Athens. The most common day of the week flights depart is Mon, with 14% of flights taking off on this day.