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$423+ Cheap flights from Frankfurt (FRA) 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 9/23. Fares are subject to change and may not be available on all flights or dates of travel.
FRA — ORD
Jun 25 — Jul 21
Thu 6/25
Thu 7/2
1 adult, Economy
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Cheap flight deals from Frankfurt to Illinois

Cheapest flights from Frankfurt to Illinois
Explore the most affordable flight options available from Frankfurt to Illinois. Find the lowest fares from popular airlines and budget airlines, with prices last updated on May 26, 2026.

This deal was found by Cheapflights users on 5/23. 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 is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 7/18:50 am
FRA
-
STL
1 stop16h 23m
United Airlines
Mon 7/208:00 am
STL
-
FRA
1 stop15h 30m
United Airlines
Deal found 5/23$695
This deal was found by Cheapflights users on 5/23. 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 is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 7/48:50 am
FRA
-
STL
1 stop15h 37m
United Airlines
Tue 7/143:22 pm
STL
-
FRA
1 stop11h 33m
United Airlines
Deal found 5/23$745
This Lufthansa deal was found by Cheapflights users on 5/21. 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 Lufthansa is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/238:40 am
FRA
-
PIA
1 stop14h 51m
Lufthansa
Tue 12/295:20 pm
PIA
-
FRA
1 stop13h 25m
Lufthansa
Deal found 5/21$760
This Flysmarter deal was found by Cheapflights users on 5/22. 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 Flysmarter is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 6/22:00 pm
FRA
-
ORD
1 stop11h 15m
Icelandair
Mon 6/87:25 pm
ORD
-
FRA
1 stop10h 35m
Icelandair
Deal found 5/22$761
This Expedia deal was found by Cheapflights users on 5/25. 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 Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 6/1411:10 am
FRA
-
STL
1 stop19h 25m
Lufthansa
Sun 6/283:30 pm
STL
-
FRA
Nonstop8h 55m
Lufthansa
Deal found 5/25$762
This Scandinavian Airlines deal was found by Cheapflights users on 5/22. 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 Scandinavian Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 9/288:30 pm
FRA
-
ORD
2 stops32h 06m
Scandinavian Airlines
Sat 10/177:15 pm
ORD
-
FRA
1 stop12h 20m
Scandinavian Airlines
Deal found 5/22$762
This Flighttix deal was found by Cheapflights users on 5/24. 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 Flighttix is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 6/42:00 pm
FRA
-
ORD
1 stop11h 15m
Icelandair
Wed 6/107:25 pm
ORD
-
FRA
1 stop10h 35m
Icelandair
Deal found 5/24$763
This Iberia deal was found by Cheapflights users on 5/22. 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 Iberia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 11/237:35 pm
FRA
-
ORD
1 stop30h 15m
Iberia
Mon 11/309:45 pm
ORD
-
FRA
2 stops30h 40m
Iberia
Deal found 5/22$764
This Icelandair deal was found by Cheapflights users on 5/23. 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 Icelandair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 6/57:25 am
FRA
-
ORD
1 stop17h 50m
Icelandair
Wed 6/1710:25 pm
ORD
-
FRA
1 stop25h 00m
Icelandair
Deal found 5/23$767
This FlightHub deal was found by Cheapflights users on 5/21. 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 5/282:00 pm
FRA
-
ORD
1 stop11h 15m
Icelandair
Mon 6/110:25 pm
ORD
-
FRA
1 stop25h 00m
Icelandair
Deal found 5/21$768
This Expedia deal was found by Cheapflights users on 5/25. 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 Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 6/57:45 am
FRA
-
ORD
1 stop12h 10m
Multiple Airlines
Fri 6/196:30 pm
ORD
-
FRA
Nonstop8h 25m
Multiple Airlines
Deal found 5/25$769
This Cheapflightsfares deal was found by Cheapflights users on 5/25. 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 Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 11/1311:25 am
FRA
-
ORD
1 stop11h 55m
Multiple Airlines
Sat 11/214:20 pm
ORD
-
FRA
Nonstop8h 10m
Multiple Airlines
Deal found 5/25$770

Find flight deals from Frankfurt to Illinois

Keep the following information in mind while searching for Frankfurt to Illinois flight deals. Data was last updated May 26, 2026.

Round-trip from

$695

One-way from

$423

Popular in

July

Cheapest in

September

Average price

$804

Good round-trip deal

$883 or less

Good one-way deal

$882 or less
From Frankfurt am Main to Illinois
Search Deals
One-way flight from Frankfurt am Main to Illinois
Search Deals
Highest demand for flights based on searches. 12% potential increase in price ($110 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 2% potential price decrease ($16 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in May 2026
Search Deals
Price to beat on a round-trip flight from Frankfurt am Main to Illinois.
Search Deals
Price to beat on a one-way flight from Frankfurt am Main to Illinois.
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Cheapflights Fare Finder

 
Customize your flight search to find flights from Frankfurt 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 May 26, 2026.
Use the filters below to find and compare flights from Frankfurt am Main Airport to Illinois that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

Frankfurt am MainChicago

FRA - ORD

FRAORD

Frankfurt am Main

Fri 9/4

10:15 am-2:15 pm

1 stop11h 00m

Chicago O'Hare Intl

Sun 9/20

1:35 pm-11:25 am

2 stops14h 50m

$788

Frankfurt am MainChicago

FRA - ORD

FRAORD

Frankfurt am Main

Sun 6/21

4:30 pm-12:55 pm

1 stop27h 25m

Chicago O'Hare Intl

Sun 6/28

3:00 pm-12:10 pm

1 stop14h 10m

$792

Frankfurt am MainChicago

FRA - MDW

FRAMDW

Frankfurt am Main

Fri 9/4

7:00 am-6:31 pm

2 stops18h 31m

Chicago Midway

Wed 9/16

1:00 pm-11:25 am

2 stops15h 25m

$793

Frankfurt am MainChicago

FRA - MDW

FRAMDW

Frankfurt am Main

Wed 9/23

7:00 am-4:11 pm

2 stops16h 11m

Chicago Midway

Wed 9/30

1:14 pm-11:25 am

2 stops15h 11m

$793

Frankfurt am MainChicago

FRA - ORD

FRAORD

Frankfurt am Main

Mon 11/2

6:55 am-4:49 pm

2 stops16h 54m

Chicago O'Hare Intl

Mon 11/16

1:35 pm-11:15 am

2 stops14h 40m

$794

Frankfurt am MainChicago

FRA - ORD

FRAORD

Frankfurt am Main

Fri 6/5

9:20 am-7:45 pm

1 stop17h 25m

Chicago O'Hare Intl

Fri 6/19

8:50 pm-9:45 pm

1 stop17h 55m

$800

Frankfurt am MainChicago

FRA - ORD

FRAORD

Frankfurt am Main

Tue 6/16

10:15 am-2:15 pm

1 stop11h 00m

Chicago O'Hare Intl

Sat 7/4

5:10 pm-2:20 pm

1 stop14h 10m

$800
Quickest round-trip

Frankfurt am MainChicago

FRA - ORD

FRAORD

Frankfurt am Main

Sun 10/18

8:50 am-11:00 am

Nonstop9h 10m

Chicago O'Hare Intl

Wed 10/28

4:15 pm-6:35 am

Nonstop8h 20m

$801

Frankfurt am MainSt. Louis

FRA - STL

FRASTL

Frankfurt am Main

Sun 6/14

10:40 am-1:25 pm

Nonstop9h 45m

Lambert-St Louis

Sun 6/28

12:55 pm-7:20 am

1 stop11h 25m

$801

Frankfurt am MainSt. Louis

FRA - STL

FRASTL

Frankfurt am Main

Fri 7/10

8:15 am-8:39 am

2 stops31h 24m

Lambert-St Louis

Fri 7/17

3:30 pm-7:25 am

Nonstop8h 55m

$803

Flights are sorted by cheapest round-trip flights first.

Deals found on 5/25

Showing 1-10 of 58 resultsSorted by cheapest first
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6

Best time to book a flight from Frankfurt to Illinois

Have a flexible travel schedule? Discover the best time to fly to Illinois from Frankfurt 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 Frankfurt am Main Airport to Illinois

What is the cheapest month to book a flight from Frankfurt am Main Airport to Illinois?

Currently, September is the cheapest month in which you can book a flight from Frankfurt am Main Airport to Illinois (average of $330). Flying from Frankfurt am Main Airport to Illinois in August is currently the most expensive (average of $1,138). 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 FRA to IL?

Find hourly flight availability from Frankfurt 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 May 26, 2026.

When flying from Frankfurt am Main Airport to Illinois, the time of day you decide to fly out makes little to no difference towards the overall price you’ll pay on tickets.

Weekly flight availability from Frankfurt am Main Airport to Illinois

Explore weekly flight availability from Frankfurt 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 May 26, 2026.

The most flights from FRA to USIL are scheduled on a Monday (13 on average). You will have fewer flight options on Monday, which is when the least amount of flights are scheduled (13 on average).

How much does it cost to fly round-trip from Frankfurt am Main Airport to Illinois?

How far ahead should I book a flight from Frankfurt am Main Airport to Illinois?

The price you pay for your flight from Frankfurt am Main Airport to Illinois may vary depending on when you book. For the best chance of a lower fare, look to book 65 days in advance of your trip. Fares are likely to increase a fortnight or so before your departure date.

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 May 26, 2026.
See what other customers who have flown with United Airlines,Icelandair, andLufthansa from Frankfurt am Main Airport 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
9,751 reviews

Food

6.6

Entertainment

7.1

Boarding

7.7

Crew

8.1

Comfort

7.3

Overall

7.4

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
9,751 reviews
United Airlines
7.4
Good
9,751 reviews

Food

6.6

Entertainment

7.1

Boarding

7.7

Crew

8.1

Comfort

7.3

Overall

7.4

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.
Icelandair
7.0
Good
657 reviews
United Airlines
7.4
Good
9,751 reviews

Food

6.6

Entertainment

7.1

Boarding

7.7

Crew

8.1

Comfort

7.3

Overall

7.4

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
8,029 reviews
United Airlines
7.4
Good
9,751 reviews

Food

6.6

Entertainment

7.1

Boarding

7.7

Crew

8.1

Comfort

7.3

Overall

7.4

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 Frankfurt to Illinois. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • How long is the flight from Frankfurt am Main Airport to Illinois?

    A quick flight from Frankfurt am Main Airport to Illinois can take about 11h. Delta provides one of the quickest options available for as low as $788. The distance from Frankfurt am Main Airport to Illinois is about 4328 mi. Both multi-stop and nonstop flights can be found to your destination and back.

  • What are the cheapest airlines to fly from Frankfurt am Main Airport to Illinois one-way?

    To fly one-way, consider booking your trip with British Airways, which is currently one of the cheapest options available, starting at $437. Icelandair flights start at $488 while deals on Aer Lingus start at $560 one-way.

  • What are the most popular routes from Frankfurt am Main Airport to Illinois?

    While some choose either Frankfurt am Main - Chicago Midway or Frankfurt am Main - Lambert-St Louis, Frankfurt am Main - Chicago O'Hare Intl is the most popular route from Frankfurt am Main Airport to Illinois.

  • What are the most reliable airlines from Frankfurt am Main Airport to Illinois?

    The top 3 most reliable airlines when flying from Frankfurt am Main Airport to Illinois are Lufthansa (64%), Air Canada (55%) and United Airlines (55%).

  • What are the cheapest flights from Frankfurt am Main Airport to Illinois?

    While on average a flight from Frankfurt am Main Airport to Illinois is generally $1,555, our data shows the cheapest flight currently is $726. When looking at the most popular route, (Frankfurt am Main - Chicago O'Hare Intl), you can expect to pay $604 for that flight.

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

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

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

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

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

    Yes. Cheapflights offers flight deals from Frankfurt 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 Frankfurt am Main Airport to Illinois?

    Currently, September is the cheapest month in which you can book a flight from Frankfurt am Main Airport to Illinois (average of $330). Flying from Frankfurt am Main Airport to Illinois in August is currently the most expensive (average of $1,138). 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

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Top 2 airlines flying from Frankfurt to Illinois

Discover the top 2 airlines that operate flights from Frankfurt 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 May 26, 2026.
AirlineCheapestAverageFlexibilityOn-time
United AirlinesCheapest$606Average$846FlexibilityNo cancel feeOn-time69%
LufthansaCheapest$617Average$745FlexibilityNo cancel feeOn-time76%

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