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$456+ Cheap flights from Athens (ATH) to Illinois

This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 10/11. Fares are subject to change and may not be available on all flights or dates of travel.
ATH — ORD
Aug 22 — Aug 291
Sat 8/22
Sat 8/29
1 adult, Economy
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Cheap flight deals from Athens to Illinois

Cheapest flights from Athens to Illinois
Explore the most affordable flight options available from Athens to Illinois. Find the lowest fares from popular airlines and budget airlines, with prices last updated on July 23, 2026.

This United Airlines deal was found by Cheapflights users on 7/21. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 8/2411:45 am
ATH
-
ORD
1 stop16h 10m
United Airlines
Mon 8/317:11 am
ORD
-
ATH
1 stop18h 59m
United Airlines
Deal found 7/21$732
This Delta deal was found by Cheapflights users on 7/21. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/16:00 am
ATH
-
MDW
2 stops18h 59m
Delta
Sun 9/66:05 am
MDW
-
ATH
2 stops17h 45m
Delta
Deal found 7/21$733
This United Airlines deal was found by Cheapflights users on 7/22. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 12/176:40 am
ATH
-
ORD
1 stop16h 40m
United Airlines
Mon 1/119:50 pm
ORD
-
ATH
1 stop19h 35m
United Airlines
Deal found 7/22$733
This Delta deal was found by Cheapflights users on 7/22. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/176:00 am
ATH
-
MDW
2 stops20h 33m
Delta
Wed 9/3010:48 am
MDW
-
ATH
2 stops18h 02m
Delta
Deal found 7/22$734
This United Airlines deal was found by Cheapflights users on 7/21. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 8/256:45 am
ATH
-
ORD
1 stop16h 10m
United Airlines
Wed 9/23:10 pm
ORD
-
ATH
1 stop21h 50m
United Airlines
Deal found 7/21$734
This Delta deal was found by Cheapflights users on 7/21. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/236:00 am
ATH
-
MDW
2 stops20h 33m
Delta
Wed 9/301:00 pm
MDW
-
ATH
2 stops15h 50m
Delta
Deal found 7/21$735
This United Airlines deal was found by Cheapflights users on 7/22. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 8/196:45 am
ATH
-
ORD
2 stops19h 52m
United Airlines
Wed 8/2610:50 am
ORD
-
ATH
1 stop15h 10m
United Airlines
Deal found 7/22$735
This United Airlines deal was found by Cheapflights users on 7/21. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 8/186:45 am
ATH
-
ORD
2 stops18h 16m
United Airlines
Tue 8/258:40 am
ORD
-
ATH
1 stop15h 30m
United Airlines
Deal found 7/21$736
This United Airlines deal was found by Cheapflights users on 7/21. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 8/276:55 am
ATH
-
ORD
1 stop14h 00m
United Airlines
Sun 8/304:20 pm
ORD
-
ATH
Nonstop10h 15m
United Airlines
Deal found 7/21$737
This United Airlines deal was found by Cheapflights users on 7/22. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/156:40 am
ATH
-
ORD
2 stops19h 53m
United Airlines
Thu 1/77:05 am
ORD
-
ATH
1 stop19h 55m
United Airlines
Deal found 7/22$738
This United Airlines deal was found by Cheapflights users on 7/20. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 8/306:55 am
ATH
-
ORD
1 stop13h 40m
United Airlines
Tue 9/2912:55 pm
ORD
-
ATH
1 stop13h 05m
United Airlines
Deal found 7/20$739
This Delta deal was found by Cheapflights users on 7/23. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 11/155:55 am
ATH
-
MDW
2 stops20h 42m
Delta
Sun 12/61:00 pm
MDW
-
ATH
2 stops16h 40m
Delta
Deal found 7/23$740

Find flight deals from Athens to Illinois

Keep the following information in mind while searching for Athens to Illinois flight deals. Data was last updated July 23, 2026.

Round-trip from

$732
(United Airlines)

One-way from

$456
(Cheapflightsfares)

Popular in

April

Cheapest in

November

Average price

$736

Good round-trip deal

$736 or less

Good one-way deal

$559 or less
From Athens Eleftherios V. to Illinois
Search Deals
One-way flight from Athens Eleftherios V. to Illinois
Search Deals
Highest demand for flights based on searches. 7% potential increase in price ($56 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 2% potential price decrease ($17 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in July 2026
Search Deals
Price to beat on a round-trip flight from Athens Eleftherios V. to Illinois.
Search Deals
Price to beat on a one-way flight from Athens Eleftherios V. to Illinois.
Search Deals

Cheapflights Fare Finder

 
Customize your flight search to find flights from Athens to Illinois 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, Cheapflights users made 2,558,603 searches. Data last updated July 23, 2026.
Use the filters below to find and compare flights from Athens to Illinois that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

AthensChicago

ATH - MDW

ATHMDW

Athens Eleftherios V.

Mon 9/28

6:00 am-6:19 pm

2 stops20h 19m

Chicago Midway

Tue 10/13

5:21 pm-4:30 pm

2 stops15h 09m

$736

AthensChicago

ATH - MDW

ATHMDW

Athens Eleftherios V.

Sun 12/6

5:55 am-6:37 pm

2 stops20h 42m

Chicago Midway

Sun 12/13

1:00 pm-1:40 pm

2 stops16h 40m

$740
Quickest round-trip

AthensChicago

ATH - ORD

ATHORD

Athens Eleftherios V.

Thu 8/13

12:35 pm-4:15 pm

Nonstop11h 40m

Chicago O'Hare Intl

Wed 8/19

4:20 pm-10:35 am

Nonstop10h 15m

$741

AthensChicago

ATH - ORD

ATHORD

Athens Eleftherios V.

Thu 8/27

6:30 am-6:37 pm

2 stops20h 07m

Chicago O'Hare Intl

Sat 9/12

12:55 pm-1:10 am

2 stops28h 15m

$754

AthensChicago

ATH - ORD

ATHORD

Athens Eleftherios V.

Mon 8/17

6:55 am-12:55 pm

1 stop14h 00m

Chicago O'Hare Intl

Mon 8/24

4:20 pm-10:35 am

Nonstop10h 15m

$779

AthensChicago

ATH - ORD

ATHORD

Athens Eleftherios V.

Wed 8/5

12:35 pm-4:15 pm

Nonstop11h 40m

Chicago O'Hare Intl

Sun 8/9

4:20 pm-10:35 am

Nonstop10h 15m

$782

AthensChicago

ATH - ORD

ATHORD

Athens Eleftherios V.

Sat 8/22

7:25 am-6:15 pm

1 stop18h 50m

Chicago O'Hare Intl

Sun 7/4

9:15 pm-2:15 am

1 stop21h 00m

$797

AthensChicago

ATH - ORD

ATHORD

Athens Eleftherios V.

Fri 8/21

7:30 am-3:55 pm

1 stop16h 25m

Chicago O'Hare Intl

Sun 7/4

9:15 pm-2:15 am

1 stop21h 00m

$797

AthensChicago

ATH - MDW

ATHMDW

Athens Eleftherios V.

Tue 9/1

9:45 am-10:36 pm

1 stop20h 51m

Chicago Midway

Sun 9/6

6:05 am-7:50 am

2 stops17h 45m

$799

AthensChicago

ATH - ORD

ATHORD

Athens Eleftherios V.

Fri 8/21

4:30 pm-1:10 pm

1 stop28h 40m

Chicago O'Hare Intl

Tue 7/6

3:00 pm-11:10 am

1 stop12h 10m

$806

Flights are sorted by cheapest round-trip flights first.

Deals found on 7/19

Showing 1-10 of 38 resultsSorted by cheapest first
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Best time to book a flight from Athens to Illinois

Have a flexible travel schedule? Discover the best time to fly to Illinois from Athens with our price prediction graph.
Estimated round-trip price
Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.

Cheapflights Insights

Everything you need to know about your flight from Athens to Illinois

What is the cheapest month to book a flight from Athens to Illinois?

Currently, February is the cheapest month in which you can book a flight from Athens to Illinois (average of $614). Flying from Athens to Illinois in June is currently the most expensive (average of $902). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

What is the cheapest time of day to fly from ATH to IL?

Find hourly flight availability from Athens to Illinois. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated July 23, 2026.

Regardless of the time of day you decide to fly, the ticket price will remain around the same. Book flights from Athens to Illinois as you normally would.

Weekly flight availability from Athens to Illinois

Explore weekly flight availability from Athens to Illinois. Discover flights operating on different days of the week, giving you the flexibility to choose a travel day that best fits your plans. Compare info to find the most convenient option for your journey. Data last updated July 23, 2026.

The most flights from ATH to USIL are scheduled on a Monday (8 on average). You will have fewer flight options on Sunday, which is when the least amount of flights are scheduled (3 on average).

How much does it cost to fly round-trip from Athens to Illinois?

Airfare is typical for this route at the moment.
Athens to Illinois flights typically cost between $687 and $888 in August.
The cheapest round-trip price found within the last 5 days was $732 on United Airlines (Aug 24-Sep 1).

How far ahead should I book a flight from Athens to Illinois?

Booking 22 days in advance of your planned departure date is, on average, the best time to get cheap flights from Athens to Illinois. The general trend is that the closer you book to the departure date, the more expensive your flight will be.

Reviews of airlines servicing Illinois

Get insights into the airlines that provide service to Illinois. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to Illinois. Reviews last updated July 23, 2026.
See what other customers who have flown with United Airlines,American Airlines, andIberia from Athens to Illinois have to say. Users can see the overall rating for each airline as well as how each is rated in terms of entertainment options, comfort, food, crew/service, and boarding process.
United Airlines
7.4
Good
10,025 reviews

Crew

8.1

Food

6.6

Comfort

7.3

Boarding

7.7

Overall

7.4

Entertainment

7.1

Reviews

1 / 20
8.0
Excellent

Anonymous,Oct 2025

YUL - ORD

Crew and customer service are 5 stars. I had a lot of luggage for a very long trip and they were nothing but helpful and found solutions to every problem. It was my first time flying with United, and they really are the friendly skies. Leg room however, on 2/3 flights was terrible. Same for entertainment: There was only a seat-mounted screen on 1/3 flights. It would have been nice to have on the longest leg of the journey.
United Airlines
7.4
Good
10,025 reviews
United Airlines
7.4
Good
10,025 reviews

Crew

8.1

Food

6.6

Comfort

7.3

Boarding

7.7

Overall

7.4

Entertainment

7.1

Reviews

1 / 20
8.0
Excellent

Anonymous,Oct 2025

YUL - ORD

Crew and customer service are 5 stars. I had a lot of luggage for a very long trip and they were nothing but helpful and found solutions to every problem. It was my first time flying with United, and they really are the friendly skies. Leg room however, on 2/3 flights was terrible. Same for entertainment: There was only a seat-mounted screen on 1/3 flights. It would have been nice to have on the longest leg of the journey.
American Airlines
7.1
Good
11,837 reviews
United Airlines
7.4
Good
10,025 reviews

Crew

8.1

Food

6.6

Comfort

7.3

Boarding

7.7

Overall

7.4

Entertainment

7.1

Reviews

1 / 20
8.0
Excellent

Anonymous,Oct 2025

YUL - ORD

Crew and customer service are 5 stars. I had a lot of luggage for a very long trip and they were nothing but helpful and found solutions to every problem. It was my first time flying with United, and they really are the friendly skies. Leg room however, on 2/3 flights was terrible. Same for entertainment: There was only a seat-mounted screen on 1/3 flights. It would have been nice to have on the longest leg of the journey.
Iberia
7.0
Good
3,256 reviews
United Airlines
7.4
Good
10,025 reviews

Crew

8.1

Food

6.6

Comfort

7.3

Boarding

7.7

Overall

7.4

Entertainment

7.1

Reviews

1 / 20
8.0
Excellent

Anonymous,Oct 2025

YUL - ORD

Crew and customer service are 5 stars. I had a lot of luggage for a very long trip and they were nothing but helpful and found solutions to every problem. It was my first time flying with United, and they really are the friendly skies. Leg room however, on 2/3 flights was terrible. Same for entertainment: There was only a seat-mounted screen on 1/3 flights. It would have been nice to have on the longest leg of the journey.
Lufthansa
6.8
Okay
8,156 reviews
United Airlines
7.4
Good
10,025 reviews

Crew

8.1

Food

6.6

Comfort

7.3

Boarding

7.7

Overall

7.4

Entertainment

7.1

Reviews

1 / 20
8.0
Excellent

Anonymous,Oct 2025

YUL - ORD

Crew and customer service are 5 stars. I had a lot of luggage for a very long trip and they were nothing but helpful and found solutions to every problem. It was my first time flying with United, and they really are the friendly skies. Leg room however, on 2/3 flights was terrible. Same for entertainment: There was only a seat-mounted screen on 1/3 flights. It would have been nice to have on the longest leg of the journey.
British Airways
6.7
Okay
8,129 reviews
United Airlines
7.4
Good
10,025 reviews

Crew

8.1

Food

6.6

Comfort

7.3

Boarding

7.7

Overall

7.4

Entertainment

7.1

Reviews

1 / 20
8.0
Excellent

Anonymous,Oct 2025

YUL - ORD

Crew and customer service are 5 stars. I had a lot of luggage for a very long trip and they were nothing but helpful and found solutions to every problem. It was my first time flying with United, and they really are the friendly skies. Leg room however, on 2/3 flights was terrible. Same for entertainment: There was only a seat-mounted screen on 1/3 flights. It would have been nice to have on the longest leg of the journey.

Related info for your journey

Find useful and relevant information for your journey from Athens to Illinois. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • What airport do you fly from for flights from Athens to Illinois?

    Located just 12.3 mi from the city center, Athens Eleftherios V. (ATH) is the airport most travelers will use when flying to Illinois from Athens.

  • How long is the flight from Athens to Illinois?

    For as low as $741, Delta can have you in Illinois from Athens in 11h 40m. The distance between Athens and Illinois is about 5446 mi. This flight may include one or multiple stops.

  • What are the cheapest airlines to fly from Athens to Illinois one-way?

    One-way options have recently been found by users for as low as $252 on Air Serbia. Other airlines that offer cheap prices include Iberia from $362 and Turkish Airlines from $381 one-way.

  • What are the most reliable airlines from Athens to Illinois?

    The top 3 most reliable airlines when flying from Athens to Illinois are American Airlines (95%), Alaska Airlines (95%) and Finnair (95%).

  • What are the cheapest flights from Athens to Illinois?

    Looking at all options, your cheapest flight can be booked for $451. While the most popular route (Athens Eleftherios V. - Chicago O'Hare Intl) can be booked for $597 on average, our data indicates $1,905 when flying from Athens to Illinois.

  • Can I find deals for flights from Athens to Illinois that include hotel bookings?

    Yes. In addition to deals on Athens to Illinois flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from Athens to Illinois?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Athens to Illinois.

  • Can I find deals for business class flights from Athens to Illinois?

    Yes. Cheapflights offers flight deals from Athens to Illinois by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

  • What is the cheapest month to book a flight from Athens to Illinois?

    Currently, February is the cheapest month in which you can book a flight from Athens to Illinois (average of $614). Flying from Athens to Illinois in June is currently the most expensive (average of $902). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

See more FAQs

Browse thousands of different options on Cheapflights for your next trip

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Top 8 airlines flying from Athens to Illinois

Discover the top 8 airlines that operate flights from Athens to Illinois. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated July 23, 2026.
AirlineCheapestAverageFlexibilityOn-time
Turkish AirlinesCheapest$536Average$716FlexibilityNo cancel feeOn-time77%
British AirwaysCheapest$537Average$783FlexibilityNo cancel feeOn-time70%
DeltaCheapest$545Average$808FlexibilityNo cancel feeOn-timeN/A
SWISSCheapest$562Average$602FlexibilityNo cancel feeOn-time79%
United AirlinesCheapest$572Average$755FlexibilityNo cancel feeOn-time69%
American AirlinesCheapest$573Average$848FlexibilityNo cancel feeOn-time71%
IberiaCheapest$576Average$753FlexibilityNo cancel feeOn-time77%
LufthansaCheapest$604Average$793FlexibilityNo cancel feeOn-time76%

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