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$386+ 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 11/19. Fares are subject to change and may not be available on all flights or dates of travel.
FRA — ORD
oct. 15 — oct. 221
mié. 10/15
mié. 10/22
1 adult, Economy
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Cheap flight deals from Frankfurt to Illinois

Keep the following information in mind while searching for Frankfurt to Illinois flight deals. Data was last updated septiembre 15, 2025.

Round-trip from

$584
(lol.travel)

One-way from

$386
(Cheapflightsfares)

Popular in

July

Cheapest in

February

Average price

$636

Good round-trip deal

$686 or less

Good one-way deal

$672 or less
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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Price to beat on a round-trip flight from Frankfurt am Main to Illinois.
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Price to beat on a one-way flight from Frankfurt am Main to Illinois.
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Find 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 septiembre 15, 2025.

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.
lun. 9/2210:40 amFRA - MDW
1 stop17h 56mKLM
dom. 10/510:35 amMDW - FRA
1 stop15h 20mKLM
Deal found 9/15$584
This Delta deal was found by Cheapflights users on 9/13. 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.
mar. 9/2310:15 amFRA - ORD
1 stop10h 55mDelta
mar. 9/3010:15 amORD - FRA
2 stops15h 45mDelta
Deal found 9/13$584
This Billigflug deal was found by Cheapflights users on 9/14. 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.
vie. 10/3110:50 amFRA - STL
1 stop13h 56mMultiple Airlines
vie. 11/144:42 pmSTL - FRA
2 stops15h 58mMultiple Airlines
Deal found 9/14$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.
lun. 10/137:00 amFRA - ORD
1 stop14h 40mDelta
lun. 10/2010:22 amORD - FRA
2 stops15h 38mDelta
Deal found 9/15$585
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.
jue. 11/206:30 amFRA - ORD
2 stops18h 15mMultiple Airlines
lun. 12/15:10 pmORD - FRA
1 stop18h 00mMultiple Airlines
Deal found 9/15$586
This Billigflug deal was found by Cheapflights users on 9/13. 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.
lun. 10/206:40 amFRA - ORD
1 stop13h 15mMultiple Airlines
lun. 10/274:20 pmORD - FRA
Nonstop8h 15mMultiple Airlines
Deal found 9/13$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.
lun. 10/137:00 amFRA - STL
2 stops17h 29mDelta
lun. 10/2011:21 amSTL - FRA
2 stops14h 39mDelta
Deal found 9/15$588
This Billigflug deal was found by Cheapflights users on 9/13. 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.
sáb. 10/49:20 amFRA - ORD
1 stop15h 10mMultiple Airlines
sáb. 10/188:15 amORD - FRA
1 stop16h 05mMultiple Airlines
Deal found 9/13$588
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.
lun. 9/2210:15 amFRA - ORD
1 stop11h 25mDelta
dom. 10/57:00 amORD - FRA
1 stop18h 40mDelta
Deal found 9/15$589
This British Airways deal was found by Cheapflights users on 9/14. 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 British Airways is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
dom. 9/219:20 amFRA - ORD
1 stop13h 18mBritish Airways
sáb. 10/412:33 pmORD - FRA
1 stop11h 47mBritish Airways
Deal found 9/14$590
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.
mié. 10/17:00 amFRA - STL
2 stops16h 37mDelta
sáb. 10/116:00 amSTL - FRA
1 stop19h 55mDelta
Deal found 9/15$592
This Billigflug deal was found by Cheapflights users on 9/13. 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.
mié. 9/249:55 amFRA - ORD
1 stop12h 00mMultiple Airlines
mié. 10/110:30 pmORD - FRA
Nonstop8h 35mMultiple Airlines
Deal found 9/13$592

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 septiembre 15, 2025.
Use the filters below to find and compare flights from Frankfurt am Main Airport to Illinois that are best for you.

Fly from

Frankfurt

Fly to

Illinois

Route

Depart

Return

Price

Frankfurt am MainChicago

FRA - ORD

FRAORD

Frankfurt am Main

dom. 10/26

10:15 am-3:20 pm

1 stop11h 05m

Chicago O'Hare Intl

sáb. 11/8

10:30 am-11:15 am

2 stops17h 45m

$584

Frankfurt am MainChicago

FRA - ORD

FRAORD

Frankfurt am Main

lun. 12/29

6:55 am-2:20 pm

1 stop14h 25m

Chicago O'Hare Intl

lun. 1/19

10:40 am-11:15 am

2 stops17h 35m

$585

Frankfurt am MainChicago

FRA - ORD

FRAORD

Frankfurt am Main

dom. 11/2

5:55 am-2:20 pm

1 stop14h 25m

Chicago O'Hare Intl

vie. 11/14

5:08 pm-4:45 pm

2 stops16h 37m

$585

Frankfurt am MainChicago

FRA - ORD

FRAORD

Frankfurt am Main

sáb. 3/14

8:00 am-7:50 pm

2 stops17h 50m

Chicago O'Hare Intl

sáb. 3/21

10:45 pm-8:15 pm

1 stop15h 30m

$587

Frankfurt am MainSt. Louis

FRA - STL

FRASTL

Frankfurt am Main

lun. 10/13

7:00 am-5:29 pm

2 stops17h 29m

Lambert-St Louis

lun. 10/20

11:21 am-9:00 am

2 stops14h 39m

$588

Frankfurt am MainSt. Louis

FRA - STL

FRASTL

Frankfurt am Main

mar. 11/11

6:55 am-8:46 pm

2 stops20h 51m

Lambert-St Louis

mar. 12/2

6:06 pm-4:45 pm

2 stops15h 39m

$588

Frankfurt am MainSt. Louis

FRA - STL

FRASTL

Frankfurt am Main

sáb. 11/1

6:55 am-4:43 pm

2 stops15h 48m

Lambert-St Louis

sáb. 11/8

10:30 am-11:15 am

2 stops17h 45m

$588

Frankfurt am MainSt. Louis

FRA - STL

FRASTL

Frankfurt am Main

jue. 11/13

10:15 am-11:40 pm

2 stops20h 25m

Lambert-St Louis

jue. 12/4

6:06 pm-4:45 pm

2 stops15h 39m

$588

Frankfurt am MainChicago

FRA - ORD

FRAORD

Frankfurt am Main

jue. 9/25

10:15 am-2:10 pm

1 stop10h 55m

Chicago O'Hare Intl

jue. 10/9

1:08 pm-8:40 am

1 stop12h 32m

$589

Frankfurt am MainChicago

FRA - ORD

FRAORD

Frankfurt am Main

lun. 10/13

10:15 am-2:40 pm

1 stop11h 25m

Chicago O'Hare Intl

lun. 10/20

8:55 am-9:50 am

1 stop17h 55m

$589

Flights are sorted by cheapest round-trip flights first.

Deals found on 9/13

Showing 1-10 of 55 results
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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, August is the cheapest month in which you can book a flight from Frankfurt am Main Airport to Illinois (average of $245). Flying from Frankfurt am Main Airport 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 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 septiembre 15, 2025.

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 septiembre 15, 2025.

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?

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 septiembre 15, 2025.
See what other customers who have flown with Delta, United Airlines, and Icelandair 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.
Delta
8.0
Very good
7,954 reviews

Crew

8.5

Entertainment

7.9

Overall

8.0

Boarding

8.2

Comfort

7.9

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
7,954 reviews
Delta
8.0
Very good
7,954 reviews

Crew

8.5

Entertainment

7.9

Overall

8.0

Boarding

8.2

Comfort

7.9

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
8,929 reviews
Delta
8.0
Very good
7,954 reviews

Crew

8.5

Entertainment

7.9

Overall

8.0

Boarding

8.2

Comfort

7.9

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
544 reviews
Delta
8.0
Very good
7,954 reviews

Crew

8.5

Entertainment

7.9

Overall

8.0

Boarding

8.2

Comfort

7.9

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
7,407 reviews
Delta
8.0
Very good
7,954 reviews

Crew

8.5

Entertainment

7.9

Overall

8.0

Boarding

8.2

Comfort

7.9

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
7,361 reviews
Delta
8.0
Very good
7,954 reviews

Crew

8.5

Entertainment

7.9

Overall

8.0

Boarding

8.2

Comfort

7.9

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 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 05m. Delta provides one of the quickest options available for as low as $584. 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 TAP AIR PORTUGAL, which is currently one of the cheapest options available, starting at $386. Finnair flights start at $420 while deals on Aer Lingus start at $614 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 Qatar Airways (75%), Atlas Air (67%) and Air Canada (51%).

  • 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 $1,265, our data shows the cheapest flight currently is $581. When looking at the most popular route, (Frankfurt am Main - Chicago O'Hare Intl), you can expect to pay $441 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, August is the cheapest month in which you can book a flight from Frankfurt am Main Airport to Illinois (average of $245). Flying from Frankfurt am Main Airport 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.

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Alternative routes for Frankfurt 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 to Illinois

Discover the top 5 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 septiembre 15, 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$698FlexibilityNo cancel feeOn-time76%

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