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$415+ 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 2/5. Fares are subject to change and may not be available on all flights or dates of travel.
FRA — ORD
Jan 9 — Jan 161
Thu 1/9
Thu 1/16
1 adult, Economy
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Cheap flight deals from Frankfurt to Illinois

Discover tips and strategies to find the most affordable flight options for your journey from Frankfurt (FRA) 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 January 4, 2025.

Round-trip from

$521
(AirNGo)

One-way from

$415
(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 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 January 4, 2025.

This AirNGo deal was found by Cheapflights users on 1/3. 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 AirNGo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 1/2410:50 amFRA - STL
1 stop19h 06mBritish Airways
Fri 2/75:40 amSTL - FRA
2 stops31h 00mBritish Airways
Deal found 1/3$521
This Billigflug deal was found by Cheapflights users on 1/3. 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 1/2410:50 amFRA - STL
1 stop36h 33mMultiple Airlines
Fri 2/73:10 pmSTL - FRA
2 stops18h 40mMultiple Airlines
Deal found 1/3$531
This OneTravel deal was found by Cheapflights users on 1/4. 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.
Sun 2/25:10 pmFRA - STL
1 stop28h 56mAir Canada
Sun 2/93:50 pmSTL - FRA
2 stops32h 35mAir Canada
Deal found 1/4$533
This American Airlines deal was found by Cheapflights users on 1/3. 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.
Fri 1/2410:50 amFRA - STL
1 stop33h 10mAmerican Airlines
Fri 2/75:40 amSTL - FRA
2 stops20h 10mAmerican Airlines
Deal found 1/3$544
This Lufthansa deal was found by Cheapflights users on 1/3. 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.
Fri 1/247:15 amFRA - ORD
1 stop13h 55mLufthansa
Fri 1/313:15 pmORD - FRA
Nonstop8h 20mLufthansa
Deal found 1/3$547
This Flighttix deal was found by Cheapflights users on 1/3. 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.
Fri 1/2410:45 amFRA - STL
Nonstop10h 10mLufthansa
Fri 2/73:45 pmSTL - FRA
Nonstop8h 40mLufthansa
Deal found 1/3$548
This Air France deal was found by Cheapflights users on 1/3. 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 France is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 8/2511:00 amFRA - MDW
1 stop13h 01mAir France
Mon 9/81:00 pmMDW - FRA
1 stop13h 50mAir France
Deal found 1/3$548
This Billigflug deal was found by Cheapflights users on 1/3. 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.
Mon 1/135:10 pmFRA - ORD
1 stop22h 47mMultiple Airlines
Sun 1/267:05 pmORD - FRA
1 stop13h 45mMultiple Airlines
Deal found 1/3$548
This KLM deal was found by Cheapflights users on 1/2. 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 3/29:50 amFRA - MDW
1 stop15h 21mKLM
Sun 3/92:55 pmMDW - FRA
1 stop10h 55mKLM
Deal found 1/2$549
This United Airlines deal was found by Cheapflights users on 1/4. 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 8/286:40 amFRA - STL
2 stops15h 41mUnited Airlines
Sun 9/73:15 pmSTL - FRA
1 stop11h 40mUnited Airlines
Deal found 1/4$551
This Air Canada deal was found by Cheapflights users on 1/4. 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.
Tue 9/910:15 amFRA - ORD
2 stops14h 08mAir Canada
Mon 9/152:40 pmORD - FRA
1 stop10h 30mAir Canada
Deal found 1/4$552
This Delta deal was found by Cheapflights users on 1/3. 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 9/17:00 amFRA - MDW
2 stops17h 01mDelta
Sun 9/145:59 pmMDW - FRA
2 stops16h 16mDelta
Deal found 1/3$553

Find flights from Frankfurt to Illinois within your budget

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 January 4, 2025.

Fly from

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Fly to

Any airport

Route

Depart

Return

Price

Frankfurt am MainSt. Louis

FRA - STL

FRASTL

Frankfurt am Main

Fri 1/24

10:50 am-10:56 pm

1 stop19h 06m

Lambert-St Louis

Fri 2/7

5:40 am-7:40 pm

2 stops31h 00m

$521

Frankfurt am MainSt. Louis

FRA - STL

FRASTL

Frankfurt am Main

Sun 2/2

10:50 am-7:30 pm

1 stop15h 40m

Lambert-St Louis

Sun 2/9

1:40 pm-7:15 am

1 stop34h 35m

$525

Frankfurt am MainSt. Louis

FRA - STL

FRASTL

Frankfurt am Main

Sun 2/2

5:10 pm-3:06 pm

1 stop28h 56m

Lambert-St Louis

Sun 2/9

3:50 pm-7:25 am

2 stops32h 35m

$533

Frankfurt am MainSt. Louis

FRA - STL

FRASTL

Frankfurt am Main

Fri 1/24

10:50 am-1:00 pm

1 stop33h 10m

Lambert-St Louis

Fri 2/7

5:40 am-8:50 am

2 stops20h 10m

$544

Frankfurt am MainChicago

FRA - ORD

FRAORD

Frankfurt am Main

Fri 1/24

7:15 am-2:10 pm

1 stop13h 55m

Chicago O'Hare Intl

Thu 2/20

3:15 pm-6:35 am

Nonstop8h 20m

$547

Frankfurt am MainSt. Louis

FRA - STL

FRASTL

Frankfurt am Main

Fri 1/24

10:45 am-1:55 pm

Nonstop10h 10m

Lambert-St Louis

Fri 2/7

3:45 pm-7:25 am

Nonstop8h 40m

$548

Frankfurt am MainChicago

FRA - ORD

FRAORD

Frankfurt am Main

Fri 1/17

10:05 am-4:41 pm

1 stop13h 36m

Chicago O'Hare Intl

Sun 1/26

5:50 pm-12:05 pm

1 stop11h 15m

$548

Frankfurt am MainChicago

FRA - MDW

FRAMDW

Frankfurt am Main

Sun 3/2

9:50 am-6:11 pm

1 stop15h 21m

Chicago Midway

Sun 3/9

2:55 pm-7:50 am

1 stop10h 55m

$549

Frankfurt am MainChicago

FRA - ORD

FRAORD

Frankfurt am Main

Wed 1/15

12:50 pm-3:15 pm

Nonstop9h 25m

Chicago O'Hare Intl

Sat 2/8

7:05 pm-3:50 pm

1 stop13h 45m

$552

Frankfurt am MainChicago

FRA - ORD

FRAORD

Frankfurt am Main

Wed 1/22

10:15 am-6:43 pm

2 stops15h 28m

Chicago O'Hare Intl

Thu 2/20

11:35 am-7:25 am

1 stop12h 50m

$553

Flights are sorted by cheapest round-trip flights first.

Deals found on 1/3

Showing 1-10 of 60 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.

Travel insights for flights from Frankfurt to Illinois

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

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 $318). 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 January 4, 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 January 4, 2025.

The most flights from FRA to USIL are scheduled on a Monday (10 on average). You will have fewer flight options on Monday, 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 January 4, 2025.
Read reviews from past customers who have flown Lufthansa, United Airlines and Austrian Airlines 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
8,526 reviews

Boarding

8.2

Crew

8.6

Comfort

8.0

Overall

8.0

Entertainment

7.9

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
8,526 reviews
Delta
8.0
Very good
8,526 reviews

Boarding

8.2

Crew

8.6

Comfort

8.0

Overall

8.0

Entertainment

7.9

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
1,338 reviews
Delta
8.0
Very good
8,526 reviews

Boarding

8.2

Crew

8.6

Comfort

8.0

Overall

8.0

Entertainment

7.9

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
7.7
Good
1,281 reviews
Delta
8.0
Very good
8,526 reviews

Boarding

8.2

Crew

8.6

Comfort

8.0

Overall

8.0

Entertainment

7.9

Food

7.3

Reviews

1 / 10

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

LOT
7.6
Good
1,112 reviews
Delta
8.0
Very good
8,526 reviews

Boarding

8.2

Crew

8.6

Comfort

8.0

Overall

8.0

Entertainment

7.9

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
782 reviews
Delta
8.0
Very good
8,526 reviews

Boarding

8.2

Crew

8.6

Comfort

8.0

Overall

8.0

Entertainment

7.9

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 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 Icelandair, which is currently one of the cheapest options available, starting at $482. Scandinavian Airlines flights start at $491 while deals on Air Serbia start at $498 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 (67%), Air Canada (61%) and United Airlines (61%).

  • 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 $1,332, our data shows the cheapest flight currently is $587. When looking at the most popular route, (Frankfurt am Main - Chicago O'Hare Intl), you can expect to pay $411 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 $318). 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 8 airlines flying from Frankfurt to Illinois

Discover the top 8 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 January 4, 2025.
AirlineCheapestAverageFlexibilityOn-time
KLMCheapest$448Average$649FlexibilityNo cancel feeOn-time75%
British AirwaysCheapest$448Average$608FlexibilityNo cancel feeOn-time70%
DeltaCheapest$450Average$620FlexibilityNo cancel feeOn-timeN/A
Scandinavian AirlinesCheapest$460Average$537FlexibilityNo cancel feeOn-time77%
IcelandairCheapest$489Average$780FlexibilityNo cancel feeOn-time76%
Aer LingusCheapest$512Average$641FlexibilityNo cancel feeOn-timeN/A
LufthansaCheapest$553Average$684FlexibilityNo cancel feeOn-time76%
United AirlinesCheapest$566Average$708FlexibilityNo cancel feeOn-time69%
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