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$359+ 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 5/9. Fares are subject to change and may not be available on all flights or dates of travel.
FRA — ORD
Apr 5 — Apr 121
Sat 4/5
Sat 4/12
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 March 31, 2025.

Round-trip from

$498
(Lufthansa)

One-way from

$359
(Kiwi.com)

Popular in

July

Cheapest in

February

Average price

$615

Good round-trip deal

$612 or less

Good one-way deal

$633 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. 14% potential increase in price ($111 potential increase over avg. RT price).
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Cheapest flight prices on average. 3% potential price decrease ($24 potential savings vs. average RT price).
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Average for round-trip flights in March 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 March 31, 2025.

This Lufthansa deal was found by Cheapflights users on 3/31. 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.
Sun 5/410:50 amFRA - ORD
Nonstop9h 05mLufthansa
Mon 5/126:05 pmORD - FRA
1 stop12h 00mLufthansa
Deal found 3/31$498
This Flysmarter deal was found by Cheapflights users on 3/31. 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.
Thu 5/111:30 amFRA - ORD
2 stops19h 19mBritish Airways
Wed 5/710:25 pmORD - FRA
1 stop17h 20mBritish Airways
Deal found 3/31$499
This United Airlines deal was found by Cheapflights users on 3/31. 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 4/179:00 amFRA - ORD
2 stops14h 44mUnited Airlines
Wed 5/1410:40 amORD - FRA
1 stop14h 30mUnited Airlines
Deal found 3/31$500
This Air Canada deal was found by Cheapflights users on 3/31. 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 Air Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 5/712:15 pmFRA - ORD
2 stops16h 51mAir Canada
Mon 5/1212:00 pmORD - FRA
2 stops13h 10mAir Canada
Deal found 3/31$502
This Expedia deal was found by Cheapflights users on 3/30. 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 9/79:45 pmFRA - ORD
1 stop22h 35mMultiple Airlines
Sat 9/2010:30 pmORD - FRA
Nonstop8h 35mMultiple Airlines
Deal found 3/30$507
This American Airlines deal was found by Cheapflights users on 3/31. 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.
Thu 4/249:20 amFRA - ORD
2 stops29h 16mAmerican Airlines
Thu 5/19:30 pmORD - FRA
1 stop14h 05mAmerican Airlines
Deal found 3/31$530
This Finnair deal was found by Cheapflights users on 3/31. 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.
Sun 4/207:20 pmFRA - ORD
1 stop29h 30mFinnair
Wed 7/1610:35 pmORD - FRA
2 stops37h 00mFinnair
Deal found 3/31$532
This KLM deal was found by Cheapflights users on 3/30. 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 KLM is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 4/67:20 pmFRA - ORD
1 stop25h 50mKLM
Sun 4/134:20 pmORD - FRA
1 stop10h 15mKLM
Deal found 3/30$535
This Delta deal was found by Cheapflights users on 3/31. 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.
Sat 6/287:00 amFRA - MDW
2 stops18h 45mDelta
Sun 7/69:23 amMDW - FRA
2 stops16h 37mDelta
Deal found 3/31$538
This Scandinavian Airlines deal was found by Cheapflights users on 3/30. 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.
Wed 5/288:30 pmFRA - ORD
1 stop26h 40mScandinavian Airlines
Mon 6/167:15 pmORD - FRA
1 stop12h 25mScandinavian Airlines
Deal found 3/30$541
This oojo deal was found by Cheapflights users on 3/31. 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 oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 4/255:10 pmFRA - ORD
1 stop11h 05mIcelandair
Sat 5/37:25 pmORD - FRA
1 stop10h 35mIcelandair
Deal found 3/31$543
This Delta deal was found by Cheapflights users on 3/31. 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 4/277:05 amFRA - ORD
2 stops18h 09mDelta
Tue 5/610:25 amORD - FRA
2 stops15h 35mDelta
Deal found 3/31$544

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 March 31, 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

Sun 5/4

10:50 am-12:55 pm

Nonstop9h 05m

Chicago O'Hare Intl

Thu 5/15

6:05 pm-9:05 pm

1 stop20h 00m

$498

Frankfurt am MainChicago

FRA - ORD

FRAORD

Frankfurt am Main

Thu 5/1

11:30 am-11:49 pm

2 stops19h 19m

Chicago O'Hare Intl

Wed 5/7

10:25 pm-10:45 pm

1 stop17h 20m

$499

Frankfurt am MainChicago

FRA - ORD

FRAORD

Frankfurt am Main

Thu 4/17

9:00 am-4:44 pm

2 stops14h 44m

Chicago O'Hare Intl

Wed 5/14

10:40 am-8:10 am

1 stop14h 30m

$500

Frankfurt am MainChicago

FRA - ORD

FRAORD

Frankfurt am Main

Wed 5/7

12:15 pm-10:06 pm

2 stops16h 51m

Chicago O'Hare Intl

Mon 5/12

12:00 pm-8:10 am

2 stops13h 10m

$502

Frankfurt am MainChicago

FRA - ORD

FRAORD

Frankfurt am Main

Sun 9/7

9:45 pm-1:20 pm

1 stop22h 35m

Chicago O'Hare Intl

Sat 9/20

10:30 pm-2:05 pm

Nonstop8h 35m

$507

Frankfurt am MainChicago

FRA - ORD

FRAORD

Frankfurt am Main

Thu 4/24

9:20 am-7:36 am

2 stops29h 16m

Chicago O'Hare Intl

Thu 5/1

9:30 pm-6:35 pm

1 stop14h 05m

$530

Frankfurt am MainChicago

FRA - ORD

FRAORD

Frankfurt am Main

Sun 4/20

7:20 pm-5:50 pm

1 stop29h 30m

Chicago O'Hare Intl

Wed 7/16

10:35 pm-6:35 pm

2 stops37h 00m

$532

Frankfurt am MainChicago

FRA - ORD

FRAORD

Frankfurt am Main

Thu 5/29

7:00 am-2:10 pm

1 stop14h 10m

Chicago O'Hare Intl

Fri 6/6

1:30 pm-8:55 am

1 stop12h 25m

$536

Frankfurt am MainChicago

FRA - MDW

FRAMDW

Frankfurt am Main

Sat 6/28

7:00 am-6:45 pm

2 stops18h 45m

Chicago Midway

Sun 7/6

9:23 am-9:00 am

2 stops16h 37m

$538

Frankfurt am MainChicago

FRA - ORD

FRAORD

Frankfurt am Main

Wed 5/28

8:30 pm-4:10 pm

1 stop26h 40m

Chicago O'Hare Intl

Mon 6/16

7:15 pm-2:40 pm

1 stop12h 25m

$541

Flights are sorted by cheapest round-trip flights first.

Deals found on 3/30

Showing 1-10 of 56 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 $323). 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 March 31, 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 March 31, 2025.

The most flights from FRA to USIL are scheduled on a Monday (13 on average). You will have fewer flight options on Tuesday, which is when the least amount of flights are scheduled (10 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 March 31, 2025.
Read reviews from past customers who have flown Delta, KLM and Finnair from Frankfurt am Main to Illinois. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.
Delta
8.0
Very good
7,899 reviews

Overall

8.0

Comfort

8.0

Boarding

8.2

Food

7.3

Crew

8.5

Entertainment

7.9

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

TUS - LAX

Delta has consistently been the best U.S. airline for my travels and this flight was no exception
Delta
8.0
Very good
7,899 reviews
Delta
8.0
Very good
7,899 reviews

Overall

8.0

Comfort

8.0

Boarding

8.2

Food

7.3

Crew

8.5

Entertainment

7.9

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

TUS - LAX

Delta has consistently been the best U.S. airline for my travels and this flight was no exception
KLM
7.8
Good
1,321 reviews
Delta
8.0
Very good
7,899 reviews

Overall

8.0

Comfort

8.0

Boarding

8.2

Food

7.3

Crew

8.5

Entertainment

7.9

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

TUS - LAX

Delta has consistently been the best U.S. airline for my travels and this flight was no exception
Finnair
7.6
Good
1,267 reviews
Delta
8.0
Very good
7,899 reviews

Overall

8.0

Comfort

8.0

Boarding

8.2

Food

7.3

Crew

8.5

Entertainment

7.9

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

TUS - LAX

Delta has consistently been the best U.S. airline for my travels and this flight was no exception
Austrian Airlines
7.6
Good
770 reviews
Delta
8.0
Very good
7,899 reviews

Overall

8.0

Comfort

8.0

Boarding

8.2

Food

7.3

Crew

8.5

Entertainment

7.9

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

TUS - LAX

Delta has consistently been the best U.S. airline for my travels and this flight was no exception
SWISS
7.5
Good
1,570 reviews
Delta
8.0
Very good
7,899 reviews

Overall

8.0

Comfort

8.0

Boarding

8.2

Food

7.3

Crew

8.5

Entertainment

7.9

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

TUS - LAX

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 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 Airport to Illinois one-way?

    To fly one-way, consider booking your trip with Air Serbia, which is currently one of the cheapest options available, starting at $452. TAP AIR PORTUGAL flights start at $459 while deals on Aer Lingus start at $512 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 (100%), Lufthansa (86%) and Air Canada (84%).

  • 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 $2,143, our data shows the cheapest flight currently is $527. When looking at the most popular route, (Frankfurt am Main - Chicago O'Hare Intl), you can expect to pay $452 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 $323). 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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Frankfurt-Hahn to Seattle flights
Frankfurt to San Diego flights
Frankfurt to Anchorage flights

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 March 31, 2025.
AirlineCheapestAverageFlexibilityOn-time
DeltaCheapest$390Average$568FlexibilityNo cancel feeOn-timeN/A
IcelandairCheapest$480Average$762FlexibilityNo cancel feeOn-time76%
British AirwaysCheapest$509Average$636FlexibilityNo cancel feeOn-time70%
LufthansaCheapest$561Average$685FlexibilityNo cancel feeOn-time76%
United AirlinesCheapest$571Average$704FlexibilityNo cancel feeOn-time69%
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