How does KAYAK find such low prices on flights from Illinois to Athens?

KAYAK is a travel search engine. That means we look across the web to find the best prices we can find for our users. With over 2 billion flight queries processed yearly, we are able to display a variety of prices and options on flights from Illinois to Athens.

How does KAYAK's flight Price Forecast tool help me choose the right time to buy my flight ticket from Illinois to Athens?

KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to Athens from Illinois is likely to change within 7 days, so travelers know whether to wait or book now.

What is the Hacker Fare option on flights from Illinois to Athens?

Hacker Fares allow you to combine one-way tickets in order to save you money over a traditional round-trip ticket. You could then fly to Athens with an airline and back to Illinois with another airline.

What is KAYAK's "flexible dates" feature and why should I care when looking for a flight from Illinois to Athens?

Sometimes travel dates aren't set in stone. If your preferred travel dates have some wiggle room, flexible dates will show you all the options when flying to Athens from Illinois up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

$370 CHEAP FLIGHTS from Illinois to Athens

Save 21% or more on flights. Compare deals from all over the web.

Never overpay with our price tracking tools.

Filter searches by price, airline and more to find your best flights.

Flight Deals

Cheap Flights from Illinois to Athens

Discover the best prices for you by selecting your travel dates on KAYAK.

Round-trip

One-way

Last minute

Direct

Recent round-trip flight deals from Illinois to Athens

Wed, Dec 30 - Wed, Jan 20

9:50 pm - 1:00 amORD Chicago O'Hare Intl-ATH Athens Eleftherios V.

19h 10m1 stop London Heathrow

8:20 pm - 1:45 pmATH Athens Eleftherios V.-ORD Chicago O'Hare Intl

25h 25m1 stop London Heathrow

$568British Airways

Mon, Nov 9 - Mon, Nov 16

6:35 pm - 7:00 pmORD Chicago O'Hare Intl-ATH Athens Eleftherios V.

16h 25m1 stop London Heathrow

8:20 pm - 3:30 pmATH Athens Eleftherios V.-ORD Chicago O'Hare Intl

27h 10m1 stop London Heathrow

$570American Airlines

Wed, Dec 30 - Wed, Jan 20

3:50 pm - 1:00 amORD Chicago O'Hare Intl-ATH Athens Eleftherios V.

25h 10m2 stops Nashville Intl London Heathrow

8:20 pm - 6:45 pmATH Athens Eleftherios V.-ORD Chicago O'Hare Intl

30h 25m1 stop London Heathrow

$574British Airways

Mon, Nov 9 - Wed, Nov 18

6:00 am - 10:05 amSTL Lambert-St Louis-ATH Athens Eleftherios V.

20h 05m1 stop Newark

1:00 pm - 3:43 pmATH Athens Eleftherios V.-STL Lambert-St Louis

34h 43m2 stops Montreal Pierre Elliott Trudeau Intl Chicago O'Hare Intl

$609United Airlines

Mon, Nov 9 - Wed, Nov 18

4:05 pm - 11:00 amSTL Lambert-St Louis-ATH Athens Eleftherios V.

34h 55m1 stop Toronto Pearson Intl

1:00 pm - 3:43 pmATH Athens Eleftherios V.-STL Lambert-St Louis

34h 43m2 stops Montreal Pierre Elliott Trudeau Intl Chicago O'Hare Intl

$613Air Canada

Mon, Nov 9 - Wed, Nov 18

4:05 pm - 11:00 amSTL Lambert-St Louis-ATH Athens Eleftherios V.

58h 55m2 stops Toronto Pearson Intl Montreal Pierre Elliott Trudeau Intl

1:00 pm - 9:40 pmATH Athens Eleftherios V.-STL Lambert-St Louis

40h 40m2 stops Montreal Pierre Elliott Trudeau Intl Chicago O'Hare Intl

$616Air Canada

Mon, Nov 9 - Wed, Nov 18

9:59 am - 10:05 amSTL Lambert-St Louis-ATH Athens Eleftherios V.

16h 06m1 stop Newark

12:25 pm - 9:52 pmATH Athens Eleftherios V.-STL Lambert-St Louis

17h 27m1 stop Newark

$629United Airlines

Mon, Nov 9 - Mon, Nov 16

3:21 pm - 3:55 pmORD Chicago O'Hare Intl-ATH Athens Eleftherios V.

16h 34m2 stops Philadelphia London Heathrow

7:55 am - 8:12 pmATH Athens Eleftherios V.-ORD Chicago O'Hare Intl

20h 17m2 stops London Heathrow Boston Logan Intl

$635American Airlines

Wed, Oct 14 - Wed, Oct 21

12:10 pm - 10:10 amSTL Lambert-St Louis-ATH Athens Eleftherios V.

14h 00m1 stop Montreal Pierre Elliott Trudeau Intl

12:10 pm - 8:20 pmATH Athens Eleftherios V.-STL Lambert-St Louis

16h 10m1 stop Toronto Pearson Intl

$640Multiple Airlines

Wed, Oct 14 - Wed, Oct 21

8:55 am - 10:10 amSTL Lambert-St Louis-ATH Athens Eleftherios V.

17h 15m2 stops Toronto Pearson Intl Montreal Pierre Elliott Trudeau Intl

12:10 pm - 8:20 pmATH Athens Eleftherios V.-STL Lambert-St Louis

16h 10m1 stop Toronto Pearson Intl

$641Multiple Airlines

Recent last minute flight deals from Illinois to Athens

Sat, Sep 19 - Tue, Sep 29

4:50 pm - 8:10 amSTL Lambert-St Louis-ATH Athens Eleftherios V.

31h 20m1 stop Newark

10:25 am - 12:13 pmATH Athens Eleftherios V.-STL Lambert-St Louis

33h 48m2 stops Newark Chicago O'Hare Intl

$702United Airlines

Sat, Sep 19 - Tue, Sep 29

5:30 pm - 8:10 amSTL Lambert-St Louis-ATH Athens Eleftherios V.

30h 40m2 stops Chicago O'Hare Intl Newark

10:25 am - 12:13 pmATH Athens Eleftherios V.-STL Lambert-St Louis

33h 48m2 stops Newark Chicago O'Hare Intl

$702United Airlines

Sat, Sep 19 - Wed, Sep 30

4:50 pm - 8:10 amSTL Lambert-St Louis-ATH Athens Eleftherios V.

31h 20m1 stop Newark

12:35 pm - 3:43 pmATH Athens Eleftherios V.-STL Lambert-St Louis

35h 08m1 stop Chicago O'Hare Intl

$735Lufthansa

Sat, Sep 19 - Tue, Sep 29

4:50 pm - 8:10 amSTL Lambert-St Louis-ATH Athens Eleftherios V.

31h 20m1 stop Newark

11:45 am - 9:41 amATH Athens Eleftherios V.-STL Lambert-St Louis

29h 56m1 stop Washington, D.C. Dulles Intl

$735Brussels Airlines

Sat, Sep 19 - Wed, Sep 30

4:50 pm - 8:10 amSTL Lambert-St Louis-ATH Athens Eleftherios V.

31h 20m1 stop Newark

6:55 am - 3:43 pmATH Athens Eleftherios V.-STL Lambert-St Louis

16h 48m2 stops Zurich Chicago O'Hare Intl

$737Multiple Airlines

Sun, Sep 20 - Mon, Nov 16

7:15 pm - 6:40 pmORD Chicago O'Hare Intl-ATH Athens Eleftherios V.

15h 25m1 stop Kastrup Copenhagen

7:30 pm - 4:45 pmATH Athens Eleftherios V.-ORD Chicago O'Hare Intl

29h 15m1 stop Kastrup Copenhagen

$748Scandinavian Airlines

Sun, Sep 20 - Wed, Apr 7

7:15 pm - 6:40 pmORD Chicago O'Hare Intl-ATH Athens Eleftherios V.

15h 25m1 stop Kastrup Copenhagen

11:35 am - 4:10 pmATH Athens Eleftherios V.-ORD Chicago O'Hare Intl

36h 35m2 stops Stockholm Arlanda Kastrup Copenhagen

$748Scandinavian Airlines

Sat, Sep 19 - Sat, Nov 14

6:05 pm - 3:20 amORD Chicago O'Hare Intl-ATH Athens Eleftherios V.

25h 15m1 stop Lisbon Humberto Delgado

4:10 am - 3:30 pmATH Athens Eleftherios V.-ORD Chicago O'Hare Intl

19h 20m1 stop Lisbon Humberto Delgado

$748TAP AIR PORTUGAL

Sat, Sep 19 - Sat, Nov 7

6:05 pm - 3:20 amORD Chicago O'Hare Intl-ATH Athens Eleftherios V.

25h 15m1 stop Lisbon Humberto Delgado

4:10 am - 3:30 pmATH Athens Eleftherios V.-ORD Chicago O'Hare Intl

19h 20m1 stop Lisbon Humberto Delgado

$748TAP AIR PORTUGAL

Sun, Sep 20 - Thu, Oct 1

7:00 am - 8:10 amSTL Lambert-St Louis-ATH Athens Eleftherios V.

17h 10m1 stop Newark

10:25 am - 9:09 pmATH Athens Eleftherios V.-STL Lambert-St Louis

18h 44m1 stop Newark

$770Lufthansa

Recent direct flight deals from Illinois to Athens

Thu, Oct 15 - Thu, Oct 22

5:15 pm - 11:30 amORD Chicago O'Hare Intl-ATH Athens Eleftherios V.

10h 15mnonstop

10:45 am - 2:15 pmATH Athens Eleftherios V.-ORD Chicago O'Hare Intl

11h 30mnonstop

$753Finnair

Fri, Oct 16 - Thu, Oct 22

5:15 pm - 11:35 amORD Chicago O'Hare Intl-ATH Athens Eleftherios V.

10h 20mnonstop

10:45 am - 2:15 pmATH Athens Eleftherios V.-ORD Chicago O'Hare Intl

11h 30mnonstop

$753Iberia

Thu, Oct 15 - Thu, Oct 22

5:15 pm - 11:30 amORD Chicago O'Hare Intl-ATH Athens Eleftherios V.

10h 15mnonstop

10:45 am - 2:15 pmATH Athens Eleftherios V.-ORD Chicago O'Hare Intl

11h 30mnonstop

$753British Airways

Tue, Oct 13 - Tue, Oct 20

5:15 pm - 11:30 amORD Chicago O'Hare Intl-ATH Athens Eleftherios V.

10h 15mnonstop

10:45 am - 2:15 pmATH Athens Eleftherios V.-ORD Chicago O'Hare Intl

11h 30mnonstop

$760American Airlines

Wed, Oct 14 - Thu, Oct 22

4:15 pm - 10:30 amORD Chicago O'Hare Intl-ATH Athens Eleftherios V.

10h 15mnonstop

12:30 pm - 3:55 pmATH Athens Eleftherios V.-ORD Chicago O'Hare Intl

11h 25mnonstop

$760United Airlines

Wed, Oct 14 - Tue, Oct 20

5:15 pm - 11:35 amORD Chicago O'Hare Intl-ATH Athens Eleftherios V.

10h 20mnonstop

10:45 am - 2:15 pmATH Athens Eleftherios V.-ORD Chicago O'Hare Intl

11h 30mnonstop

$760Finnair

Tue, Oct 13 - Wed, Oct 21

5:15 pm - 11:30 amORD Chicago O'Hare Intl-ATH Athens Eleftherios V.

10h 15mnonstop

10:45 am - 2:15 pmATH Athens Eleftherios V.-ORD Chicago O'Hare Intl

11h 30mnonstop

$760Iberia

Tue, Oct 13 - Tue, Oct 20

4:20 pm - 10:35 amORD Chicago O'Hare Intl-ATH Athens Eleftherios V.

10h 15mnonstop

12:35 pm - 4:00 pmATH Athens Eleftherios V.-ORD Chicago O'Hare Intl

11h 25mnonstop

$761United Airlines

Tue, Oct 13 - Wed, Oct 21

5:15 pm - 11:30 amORD Chicago O'Hare Intl-ATH Athens Eleftherios V.

10h 15mnonstop

10:45 am - 2:15 pmATH Athens Eleftherios V.-ORD Chicago O'Hare Intl

11h 30mnonstop

$777British Airways

Mon, Oct 5 - Wed, Oct 21

5:15 pm - 11:35 amORD Chicago O'Hare Intl-ATH Athens Eleftherios V.

10h 20mnonstop

10:45 am - 2:15 pmATH Athens Eleftherios V.-ORD Chicago O'Hare Intl

11h 30mnonstop

$819American Airlines

Useful Info

Low season	January
High season	July
Cheapest flight	$370

Best time to beat the crowds with an average 24% drop in price.

Most popular time to fly with an average 23% increase in price.

Flight from Chicago O'Hare Airport to Athens

How does KAYAK find such low prices on flights from Illinois to Athens?
KAYAK is a travel search engine. That means we look across the web to find the best prices we can find for our users. With over 2 billion flight queries processed yearly, we are able to display a variety of prices and options on flights from Illinois to Athens.
How does KAYAK's flight Price Forecast tool help me choose the right time to buy my flight ticket from Illinois to Athens?
KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to Athens from Illinois is likely to change within 7 days, so travelers know whether to wait or book now.
What is the Hacker Fare option on flights from Illinois to Athens?
Hacker Fares allow you to combine one-way tickets in order to save you money over a traditional round-trip ticket. You could then fly to Athens with an airline and back to Illinois with another airline.
What is KAYAK's "flexible dates" feature and why should I care when looking for a flight from Illinois to Athens?
Sometimes travel dates aren't set in stone. If your preferred travel dates have some wiggle room, flexible dates will show you all the options when flying to Athens from Illinois up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.