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$340+ Cheap flights from Frankfurt am Main 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 10/23. Fares are subject to change and may not be available on all flights or dates of travel.
FRA — ORD
Oct 17 — Oct 241
Fri 10/17
Fri 10/24
1 adult, Economy
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Cheap flight deals from Frankfurt am Main to Illinois

Keep the following information in mind while searching for Frankfurt am Main to Illinois flight deals. Data was last updated September 17, 2025.

Round-trip from

$582
(American Airlines)

One-way from

$340
(Mytrip)

Popular in

July

Cheapest in

February

Average price

$636
From Frankfurt am Main to Illinois
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One-way flight from Frankfurt am Main to Illinois
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Highest demand for flights based on searches. 10% potential increase in price ($82 potential increase over avg. RT price).
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Cheapest flight prices on average. 2% potential price decrease ($18 potential savings vs. average RT price).
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Average for round-trip flights in September 2025
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Find flight deals from Frankfurt am Main to Illinois

Cheapest flights from Frankfurt am Main to Illinois
Explore the most affordable flight options available from Frankfurt am Main to Illinois. Find the lowest fares from popular airlines and budget airlines, with prices last updated on September 17, 2025.

This Travelis deal was found by Cheapflights users on 9/17. 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 Travelis is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/257:00 amFRA - ORD
1 stop14h 10mKLM
Wed 10/81:26 pmORD - FRA
1 stop12h 29mKLM
Deal found 9/17$581
This American Airlines deal was found by Cheapflights users on 9/17. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 10/259:20 amFRA - ORD
1 stop21h 33mAmerican Airlines
Tue 10/287:25 pmORD - FRA
1 stop12h 45mAmerican Airlines
Deal found 9/17$582
This American Airlines deal was found by Cheapflights users on 9/17. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/246:30 amFRA - ORD
1 stop14h 45mAmerican Airlines
Tue 9/3010:35 pmORD - FRA
1 stop17h 05mAmerican Airlines
Deal found 9/17$583
This ResecentrumGruppen deal was found by Cheapflights users on 9/15. 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 ResecentrumGruppen is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 9/2210:40 amFRA - MDW
1 stop17h 56mKLM
Sun 10/510:35 amMDW - FRA
1 stop15h 20mKLM
Deal found 9/15$584
This American Airlines deal was found by Cheapflights users on 9/15. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/239:20 amFRA - ORD
1 stop18h 07mAmerican Airlines
Tue 9/3010:35 pmORD - FRA
1 stop17h 05mAmerican Airlines
Deal found 9/15$584
This Travelis deal was found by Cheapflights users on 9/15. 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 Travelis is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/319:50 amFRA - STL
1 stop14h 12mAir France
Fri 11/142:36 pmSTL - FRA
1 stop10h 14mAir France
Deal found 9/15$585
This Delta deal was found by Cheapflights users on 9/15. 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.
Mon 10/137:00 amFRA - ORD
1 stop14h 40mDelta
Mon 10/2010:22 amORD - FRA
2 stops15h 38mDelta
Deal found 9/15$585
This Billigflug deal was found by Cheapflights users on 9/16. 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 Billigflug is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/3110:50 amFRA - STL
1 stop13h 56mMultiple Airlines
Fri 11/144:42 pmSTL - FRA
2 stops15h 58mMultiple Airlines
Deal found 9/16$586
This Iberia deal was found by Cheapflights users on 9/15. 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.
Thu 11/206:30 amFRA - ORD
2 stops18h 15mMultiple Airlines
Sun 11/239:45 pmORD - FRA
1 stop17h 15mMultiple Airlines
Deal found 9/15$586
This lol.travel deal was found by Cheapflights users on 9/16. 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 lol.travel is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/258:50 amFRA - ORD
Nonstop9h 10mUnited Airlines
Wed 10/810:30 pmORD - FRA
Nonstop8h 35mUnited Airlines
Deal found 9/16$587
This Delta deal was found by Cheapflights users on 9/15. 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.
Mon 10/137:00 amFRA - STL
2 stops17h 29mDelta
Mon 10/2011:21 amSTL - FRA
2 stops14h 39mDelta
Deal found 9/15$588
This Flightsearch deal was found by Cheapflights users on 9/16. 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 Flightsearch is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/256:45 amFRA - ORD
1 stop12h 20mLufthansa
Wed 10/84:00 pmORD - FRA
Nonstop8h 20mLufthansa
Deal found 9/16$588

Cheapflights Fare Finder

 
Customize your flight search to find flights from Frankfurt am Main 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 September 17, 2025.
Use the filters below to find and compare flights from Frankfurt am Main to Illinois that are best for you.

Fly from

Frankfurt am Main

Fly to

Illinois

Route

Depart

Return

Price

Frankfurt am MainSt. Louis

FRA - STL

FRASTL

Frankfurt am Main

Fri 10/31

10:50 am-3:45 pm

1 stop34h 55m

Lambert-St Louis

Fri 11/14

4:42 pm-3:40 pm

2 stops15h 58m

$585

Frankfurt am MainChicago

FRA - ORD

FRAORD

Frankfurt am Main

Mon 10/13

10:15 am-2:40 pm

1 stop11h 25m

Chicago O'Hare Intl

Mon 10/20

11:23 am-9:00 am

2 stops14h 37m

$585

Frankfurt am MainChicago

FRA - ORD

FRAORD

Frankfurt am Main

Sun 11/2

5:55 am-2:20 pm

1 stop14h 25m

Chicago O'Hare Intl

Fri 11/14

5:08 pm-4:45 pm

2 stops16h 37m

$585

Frankfurt am MainChicago

FRA - ORD

FRAORD

Frankfurt am Main

Sat 3/14

8:00 am-7:50 pm

2 stops17h 50m

Chicago O'Hare Intl

Sat 3/21

10:45 pm-8:15 pm

1 stop15h 30m

$587

Frankfurt am MainSt. Louis

FRA - STL

FRASTL

Frankfurt am Main

Mon 10/13

7:00 am-5:29 pm

2 stops17h 29m

Lambert-St Louis

Mon 10/20

11:21 am-9:00 am

2 stops14h 39m

$588

Frankfurt am MainChicago

FRA - ORD

FRAORD

Frankfurt am Main

Sun 12/14

10:15 am-2:20 pm

1 stop11h 05m

Chicago O'Hare Intl

Sun 12/28

12:31 pm-8:40 am

1 stop13h 09m

$589

Frankfurt am MainChicago

FRA - ORD

FRAORD

Frankfurt am Main

Sat 11/1

6:55 am-3:20 pm

1 stop14h 25m

Chicago O'Hare Intl

Sat 11/8

1:26 pm-11:15 am

2 stops14h 49m

$589

Frankfurt am MainChicago

FRA - ORD

FRAORD

Frankfurt am Main

Wed 10/1

9:20 am-5:30 pm

1 stop15h 10m

Chicago O'Hare Intl

Mon 10/6

12:52 pm-7:20 am

1 stop11h 28m

$590

Frankfurt am MainChicago

FRA - ORD

FRAORD

Frankfurt am Main

Tue 3/3

6:55 am-4:39 pm

2 stops16h 44m

Chicago O'Hare Intl

Tue 3/24

6:20 pm-11:15 am

1 stop10h 55m

$590

Frankfurt am MainChicago

FRA - ORD

FRAORD

Frankfurt am Main

Mon 10/20

9:20 am-7:11 pm

1 stop16h 51m

Chicago O'Hare Intl

Mon 11/3

6:35 pm-8:50 am

1 stop31h 15m

$591

Flights are sorted by cheapest round-trip flights first.

Deals found on 9/16

Showing 1-10 of 60 results
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Best time to book a flight from Frankfurt am Main to Illinois

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

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

Currently, August is the cheapest month in which you can book a flight from Frankfurt am Main to Illinois (average of $245). Flying from Frankfurt am Main to Illinois in March is currently the most expensive (average of $321). 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 am Main 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 September 17, 2025.

When flying from Frankfurt am Main 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 to Illinois

Explore weekly flight availability from Frankfurt am Main 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 September 17, 2025.

The most flights from FK0 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).

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 September 17, 2025.
Read through reviews of airlines operating flights from Frankfurt am Main to Illinois, such as Delta, United Airlines, and Icelandair. You can also see how each airline stacks up in terms of entertainment options, comfort, food, crew/service, and boarding process.
Delta
8.0
Very good
7,961 reviews

Entertainment

7.9

Overall

8.0

Boarding

8.2

Comfort

7.9

Crew

8.5

Food

7.3

Reviews

1 / 20
6.0
Good

Morgan Rae,Aug 2025

BRU - JFK

Typically I choose delta because they do a great job but this time the flight attendant in my zone was very rude and didnt offer the same treatment as she did to others
Delta
8.0
Very good
7,961 reviews
Delta
8.0
Very good
7,961 reviews

Entertainment

7.9

Overall

8.0

Boarding

8.2

Comfort

7.9

Crew

8.5

Food

7.3

Reviews

1 / 20
6.0
Good

Morgan Rae,Aug 2025

BRU - JFK

Typically I choose delta because they do a great job but this time the flight attendant in my zone was very rude and didnt offer the same treatment as she did to others
United Airlines
7.4
Good
8,926 reviews
Delta
8.0
Very good
7,961 reviews

Entertainment

7.9

Overall

8.0

Boarding

8.2

Comfort

7.9

Crew

8.5

Food

7.3

Reviews

1 / 20
6.0
Good

Morgan Rae,Aug 2025

BRU - JFK

Typically I choose delta because they do a great job but this time the flight attendant in my zone was very rude and didnt offer the same treatment as she did to others
Icelandair
7.0
Good
545 reviews
Delta
8.0
Very good
7,961 reviews

Entertainment

7.9

Overall

8.0

Boarding

8.2

Comfort

7.9

Crew

8.5

Food

7.3

Reviews

1 / 20
6.0
Good

Morgan Rae,Aug 2025

BRU - JFK

Typically I choose delta because they do a great job but this time the flight attendant in my zone was very rude and didnt offer the same treatment as she did to others
Lufthansa
6.8
Okay
7,409 reviews
Delta
8.0
Very good
7,961 reviews

Entertainment

7.9

Overall

8.0

Boarding

8.2

Comfort

7.9

Crew

8.5

Food

7.3

Reviews

1 / 20
6.0
Good

Morgan Rae,Aug 2025

BRU - JFK

Typically I choose delta because they do a great job but this time the flight attendant in my zone was very rude and didnt offer the same treatment as she did to others
British Airways
6.7
Okay
7,367 reviews
Delta
8.0
Very good
7,961 reviews

Entertainment

7.9

Overall

8.0

Boarding

8.2

Comfort

7.9

Crew

8.5

Food

7.3

Reviews

1 / 20
6.0
Good

Morgan Rae,Aug 2025

BRU - JFK

Typically I choose delta because they do a great job but this time the flight attendant in my zone was very rude and didnt offer the same treatment as she did to others

Related info for your journey

Find useful and relevant information for your journey from Frankfurt am Main 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 to Illinois?

    There are many flights that can get you from Frankfurt am Main to Illinois in 11h 05m. Fly via Delta, British Airways, or KLM to get the fastest option. Frankfurt am Main and Illinois are separated by a distance of 4328 mi. When browsing for deals, the options you’ll see will be for both nonstop flights and flights with stops.

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

    When deciding which route to take from Frankfurt am Main to Illinois consider Frankfurt am Main - Chicago O'Hare Intl, Frankfurt am Main - Chicago Midway or Frankfurt am Main - Lambert-St Louis as they are the most popular.

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

    Before booking your flight to Illinois from Frankfurt am Main, check out the most reliable airlines to get you to your destination on time: Atlas Air (100%), Qatar Airways (78%), Air Canada( 58%).

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

    Looking for the cheapest flight from Frankfurt am Main to Illinois? While on average our users pay $1,278, our data indicates the cheapest price to be $590. The most popular route (Frankfurt am Main - Chicago O'Hare Intl), is priced around $437.

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

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

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

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

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

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

    Currently, August is the cheapest month in which you can book a flight from Frankfurt am Main to Illinois (average of $245). Flying from Frankfurt am Main to Illinois in March is currently the most expensive (average of $321). 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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Alternative routes for Frankfurt am Main to Illinois

See prices for flight routes from nearby airports that may be better suited for you.
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Top 5 airlines flying from Frankfurt am Main to Illinois

Discover the top 5 airlines that operate flights from Frankfurt am Main 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 September 17, 2025.
AirlineCheapestAverageFlexibilityOn-time
DeltaCheapest$390Average$568FlexibilityNo cancel feeOn-timeN/A
IcelandairCheapest$480Average$659FlexibilityNo cancel feeOn-time76%
British AirwaysCheapest$509Average$638FlexibilityNo cancel feeOn-time70%
United AirlinesCheapest$543Average$730FlexibilityNo cancel feeOn-time69%
LufthansaCheapest$553Average$785FlexibilityNo cancel feeOn-time76%

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