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$323+ 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 5/12. Fares are subject to change and may not be available on all flights or dates of travel.
FRA — ORD
ene. 26 — feb. 21
dom. 1/26
dom. 2/2
1 adult, Economy
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Cheap flight deals from Frankfurt am Main to Illinois

Discover tips and strategies to find the most affordable flight options for your journey from Frankfurt am Main (FK0) to Illinois (USIL). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated enero 21, 2025.

Round-trip from

$524
(Expedia)

One-way from

$323
(Kiwi.com)
From Frankfurt am Main to Illinois
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One-way flight from Frankfurt am Main to Illinois
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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 enero 21, 2025.

This Expedia deal was found by Cheapflights users on 1/20. 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 Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mié. 4/2310:45 amFRA - STL
2 stops17h 38mBritish Airways
mié. 4/3012:02 pmSTL - FRA
2 stops18h 48mBritish Airways
Deal found 1/20$524
This Billigflug deal was found by Cheapflights users on 1/20. 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 Billigflug is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
dom. 2/210:50 amFRA - STL
1 stop15h 40mMultiple Airlines
dom. 2/169:29 amSTL - FRA
1 stop14h 46mMultiple Airlines
Deal found 1/20$529
This OneTravel deal was found by Cheapflights users on 1/21. 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 OneTravel is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
jue. 3/135:10 pmFRA - STL
1 stop27h 56mAir Canada
jue. 3/203:50 pmSTL - FRA
2 stops33h 35mAir Canada
Deal found 1/21$531
This Delta deal was found by Cheapflights users on 1/21. 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.
jue. 11/137:05 amFRA - ORD
2 stops18h 35mDelta
vie. 11/282:10 pmORD - FRA
2 stops16h 30mDelta
Deal found 1/21$533
This American Airlines deal was found by Cheapflights users on 1/21. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mar. 9/99:20 amFRA - ORD
2 stops16h 49mAmerican Airlines
jue. 9/257:00 amORD - FRA
2 stops17h 20mAmerican Airlines
Deal found 1/21$536
This Ticket deal was found by Cheapflights users on 1/21. 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 Ticket is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
vie. 3/711:40 amFRA - STL
1 stop18h 57mKLM
vie. 3/145:37 pmSTL - FRA
1 stop32h 13mKLM
Deal found 1/21$537
This Delta deal was found by Cheapflights users on 1/21. 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.
dom. 9/2111:00 amFRA - MDW
1 stop13h 01mDelta
dom. 10/125:59 pmMDW - FRA
2 stops16h 16mDelta
Deal found 1/21$537
This Finnair deal was found by Cheapflights users on 1/21. 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 Finnair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
dom. 6/17:45 pmFRA - ORD
1 stop25h 30mFinnair
jue. 7/319:30 pmORD - FRA
1 stop14h 05mFinnair
Deal found 1/21$537
This Trip.com deal was found by Cheapflights users on 1/21. 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 Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
vie. 2/710:40 amFRA - MDW
1 stop14h 31mVirgin Atlantic
vie. 2/219:33 amMDW - FRA
1 stop15h 17mVirgin Atlantic
Deal found 1/21$538
This Flighttix deal was found by Cheapflights users on 1/19. 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.
vie. 10/102:00 pmFRA - ORD
1 stop11h 15mIcelandair
dom. 10/127:25 pmORD - FRA
1 stop13h 40mIcelandair
Deal found 1/19$539
This Finnair deal was found by Cheapflights users on 1/20. 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 Finnair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
dom. 2/210:50 amFRA - STL
1 stop15h 40mFinnair
dom. 2/1611:25 amSTL - FRA
1 stop12h 50mFinnair
Deal found 1/20$540
This Expedia deal was found by Cheapflights users on 1/20. 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 Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
jue. 4/1710:45 amFRA - ORD
1 stop12h 10mBritish Airways
jue. 5/812:20 pmORD - FRA
1 stop12h 00mBritish Airways
Deal found 1/20$540

Find flights from Frankfurt am Main to Illinois within your budget

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 enero 21, 2025.

Fly from

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Fly to

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Route

Depart

Return

Price

Frankfurt am MainSt. Louis

FRA - STL

FRASTL

Frankfurt am Main

mié. 4/23

10:45 am-9:23 pm

2 stops17h 38m

Lambert-St Louis

mié. 4/30

12:02 pm-1:50 pm

2 stops18h 48m

$524

Frankfurt am MainSt. Louis

FRA - STL

FRASTL

Frankfurt am Main

dom. 2/2

10:50 am-7:30 pm

1 stop15h 40m

Lambert-St Louis

dom. 2/16

9:29 am-7:15 am

1 stop14h 46m

$529

Frankfurt am MainSt. Louis

FRA - STL

FRASTL

Frankfurt am Main

jue. 3/13

5:10 pm-3:06 pm

1 stop27h 56m

Lambert-St Louis

jue. 3/20

3:50 pm-7:25 am

2 stops33h 35m

$531

Frankfurt am MainSt. Louis

FRA - STL

FRASTL

Frankfurt am Main

vie. 3/7

11:40 am-11:37 pm

1 stop18h 57m

Lambert-St Louis

vie. 3/14

5:37 pm-7:50 am

1 stop32h 13m

$537

Frankfurt am MainChicago

FRA - ORD

FRAORD

Frankfurt am Main

dom. 6/1

7:45 pm-2:15 pm

1 stop25h 30m

Chicago O'Hare Intl

jue. 7/31

9:30 pm-6:35 pm

1 stop14h 05m

$537

Frankfurt am MainChicago

FRA - MDW

FRAMDW

Frankfurt am Main

vie. 2/7

10:40 am-6:11 pm

1 stop14h 31m

Chicago Midway

vie. 2/21

9:33 am-7:50 am

1 stop15h 17m

$538

Frankfurt am MainChicago

FRA - ORD

FRAORD

Frankfurt am Main

vie. 3/7

11:25 am-6:45 pm

1 stop14h 20m

Chicago O'Hare Intl

vie. 3/14

1:30 pm-8:50 am

1 stop13h 20m

$538

Frankfurt am MainChicago

FRA - ORD

FRAORD

Frankfurt am Main

vie. 1/31

10:50 am-7:20 pm

1 stop15h 30m

Chicago O'Hare Intl

jue. 2/13

8:25 pm-5:15 pm

1 stop13h 50m

$539

Frankfurt am MainSt. Louis

FRA - STL

FRASTL

Frankfurt am Main

dom. 2/2

10:50 am-7:30 pm

1 stop15h 40m

Lambert-St Louis

dom. 2/16

11:25 am-7:15 am

1 stop12h 50m

$540

Frankfurt am MainChicago

FRA - ORD

FRAORD

Frankfurt am Main

mar. 4/29

10:15 am-7:30 pm

2 stops16h 15m

Chicago O'Hare Intl

dom. 5/11

8:45 am-7:30 am

1 stop15h 45m

$542

Flights are sorted by cheapest round-trip flights first.

Deals found on 1/20

Showing 1-10 of 58 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.

Travel insights for flights from Frankfurt am Main to Illinois

Get recent, data-driven insights about flights from Frankfurt am Main to Illinois including ideal travel times, pricing trends, and more.

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 $320). 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 enero 21, 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 enero 21, 2025.

The most flights from FK0 to USIL are scheduled on a Monday (10 on average). You will have fewer flight options on Wednesday, which is when the least amount of flights are scheduled (7 on average).

Rainfall in Illinois by month

Plan your trip to Illinois by taking into account the average rainfall totals by month.

In terms of precipitation, rainfall in Illinois ranges from 1.7 - 4.9 inches per month. August is typically the wettest month, when rainfall can reach 4.9 in. January is typically the driest time to visit Illinois when rainfall is around 1.7 in.

Temperature in Illinois by month

Plan your trip to Illinois by taking into account the average temperature totals by month.

If weather is an important factor for your trip to Illinois, use this chart to help with planning. For those seeking warmer temperatures, July is the ideal time of year to visit, when temperatures reach an average of 73.4 F. Travelers looking to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 23.0 F).

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 enero 21, 2025.
Peruse reviews from past customers who have flown with Finnair, American Airlines and British Airways from Frankfurt am Main to Illinois to help guide your decision. In addition to providing an overall rating, users have also rated airlines in terms of entertainment options, comfort, food, crew/service, and boarding process.
Delta
8.0
Very good
8,521 reviews

Comfort

8.0

Boarding

8.2

Crew

8.6

Entertainment

7.9

Overall

8.0

Food

7.3

Reviews

1 / 10

Delta has consistently been the best U.S. airline for my travels and this flight was no exception

Delta
8.0
Very good
8,521 reviews
Delta
8.0
Very good
8,521 reviews

Comfort

8.0

Boarding

8.2

Crew

8.6

Entertainment

7.9

Overall

8.0

Food

7.3

Reviews

1 / 10

Delta has consistently been the best U.S. airline for my travels and this flight was no exception

KLM
7.8
Good
1,341 reviews
Delta
8.0
Very good
8,521 reviews

Comfort

8.0

Boarding

8.2

Crew

8.6

Entertainment

7.9

Overall

8.0

Food

7.3

Reviews

1 / 10

Delta has consistently been the best U.S. airline for my travels and this flight was no exception

Finnair
7.6
Good
1,286 reviews
Delta
8.0
Very good
8,521 reviews

Comfort

8.0

Boarding

8.2

Crew

8.6

Entertainment

7.9

Overall

8.0

Food

7.3

Reviews

1 / 10

Delta has consistently been the best U.S. airline for my travels and this flight was no exception

Austrian Airlines
7.6
Good
786 reviews
Delta
8.0
Very good
8,521 reviews

Comfort

8.0

Boarding

8.2

Crew

8.6

Entertainment

7.9

Overall

8.0

Food

7.3

Reviews

1 / 10

Delta has consistently been the best U.S. airline for my travels and this flight was no exception

SWISS
7.5
Good
1,600 reviews
Delta
8.0
Very good
8,521 reviews

Comfort

8.0

Boarding

8.2

Crew

8.6

Entertainment

7.9

Overall

8.0

Food

7.3

Reviews

1 / 10

Delta has consistently been the best U.S. airline for my travels and this flight was no exception

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.

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

    The cheapest airlines for a one-way flight from Frankfurt am Main to Illinois are Icelandair ($460), Aer Lingus ($462), and Air Serbia ($500).

  • 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: Air Canada (57%), United Airlines (57%), Lufthansa( 55%).

  • 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 $1,072, our data indicates the cheapest price to be $560. The most popular route (Frankfurt am Main - Chicago O'Hare Intl), is priced around $441.

  • 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 $320). 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 am Main to Illinois

See prices for flight routes from nearby airports that may be better suited for you.
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Top 8 airlines flying from Frankfurt am Main to Illinois

Discover the top 8 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 enero 21, 2025.
AirlineCheapestAverageFlexibilityOn-time
KLMCheapest$448Average$649FlexibilityNo cancel feeOn-time75%
DeltaCheapest$450Average$620FlexibilityNo cancel feeOn-timeN/A
British AirwaysCheapest$451Average$594FlexibilityNo cancel feeOn-time70%
Scandinavian AirlinesCheapest$460Average$537FlexibilityNo cancel feeOn-time77%
IcelandairCheapest$487Average$780FlexibilityNo cancel feeOn-time76%
Aer LingusCheapest$501Average$641FlexibilityNo cancel feeOn-timeN/A
LufthansaCheapest$561Average$787FlexibilityNo cancel feeOn-time76%
United AirlinesCheapest$566Average$707FlexibilityNo cancel feeOn-time69%
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