$380 Find Cheap Flights from Frankfurt Airport to Illinois - Compare and Save

This is the cheapest round-trip flight price found by a KAYAK user in the last 72 hours by searching for a flight from Frankfurt to Illinois departing on 9/14. Fares are subject to change and may not be available on all flights or dates of travel. Click the price to replicate the search for this deal.
1 adult
1 adult, Economy, 0 bags

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Cheap Flights from Frankfurt to Illinois

Cheapest round-trip prices found by our users on KAYAK in the last 72 hours
Moline
Moline2 stops$820
St. Louis
St. Louisnonstop$380
Moline
Moline2 stops$820
St. Louis
St. Louisnonstop$380

Book Cheap Frankfurt to Illinois Plane Tickets

 
Here are some of the best deals found on KAYAK recently from the most popular airlines for round-trip flights from Frankfurt to Illinois that are departing in the next months. While these flights were available on KAYAK in the last 72 hours, prices and availability are subject to change and deals may expire.
Discover the best prices for you by selecting your travel dates on KAYAK.

Recent round-trip flight deals from Frankfurt to Illinois

Mon, Sep 14 - Mon, Sep 28
Multiple Airlines Logo
10:40 am - 1:25 pm
FRA
-
STL
9h 45mnonstop
Multiple Airlines Logo
12:10 pm - 6:00 am
STL
-
FRA
10h 50m
1 stop
$380Multiple Airlines
Mon, Sep 14 - Mon, Sep 28
Multiple Airlines Logo
9:55 am - 6:41 pm
FRA
-
STL
15h 46m
1 stop
Multiple Airlines Logo
12:10 pm - 6:00 am
STL
-
FRA
10h 50m
1 stop
$380Multiple Airlines
Tue, Oct 6 - Thu, Oct 22
Icelandair Logo
2:00 pm - 6:15 pm
FRA
-
ORD
11h 15m
1 stop
Icelandair Logo
7:25 pm - 1:00 pm
ORD
-
FRA
10h 35m
1 stop
$608Icelandair
Mon, Oct 12 - Sat, Oct 24
Scandinavian Airlines Logo
8:30 pm - 4:10 pm
FRA
-
ORD
26h 40m
1 stop
Scandinavian Airlines Logo
7:15 pm - 10:45 am
ORD
-
FRA
32h 30m
1 stop
$632Scandinavian Airlines
Fri, Oct 23 - Mon, Nov 2
Lufthansa Logo
1:15 pm - 6:15 pm
FRA
-
ORD
12h 00m
1 stop
Lufthansa Logo
10:35 pm - 1:45 pm
ORD
-
FRA
8h 10mnonstop
$737Lufthansa
Tue, Aug 25 - Tue, Sep 1
Lufthansa Logo
7:45 am - 12:55 pm
FRA
-
ORD
12h 10m
1 stop
Lufthansa Logo
3:10 pm - 6:30 am
ORD
-
FRA
8h 20mnonstop
$738Lufthansa
Thu, Nov 26 - Wed, Dec 2
Lufthansa Logo
12:15 pm - 6:25 pm
FRA
-
ORD
13h 10m
1 stop
Lufthansa Logo
10:35 pm - 1:45 pm
ORD
-
FRA
8h 10mnonstop
$740Lufthansa
Thu, Aug 20 - Sun, Sep 6
United Airlines Logo
7:45 am - 12:35 pm
FRA
-
ORD
11h 50m
1 stop
United Airlines Logo
6:30 pm - 9:55 am
ORD
-
FRA
8h 25mnonstop
$770United Airlines
Thu, Aug 20 - Tue, Sep 8
United Airlines Logo
7:45 am - 12:35 pm
FRA
-
ORD
11h 50m
1 stop
United Airlines Logo
4:05 pm - 7:25 am
ORD
-
FRA
8h 20mnonstop
$770United Airlines
Thu, Aug 20 - Fri, Sep 11
United Airlines Logo
7:45 am - 12:55 pm
FRA
-
ORD
12h 10m
1 stop
United Airlines Logo
3:10 pm - 6:30 am
ORD
-
FRA
8h 20mnonstop
$770United Airlines
Booking Insights

KAYAK's insights & trends for Frankfurt to Illinois flights

Get data-powered insights and trends into flights from Frankfurt to Illinois to help you find the cheapest flights, the best time to fly and much more.

How much is a round-trip flight from Frankfurt am Main Airport to Illinois?

This analysis is based on the cheapest round-trip price found on KAYAK in the last 12 months by searching for a flight from Frankfurt am Main Airport to Illinois departing in October.

Flight prices are below average for this route right now.

Flights to Illinois from Frankfurt am Main Airport usually cost between $799 and $1,054 in October.
The lowest price found in the past 5 days was $608 on Icelandair (Oct 6-Oct 22).

What is the cheapest Frankfurt am Main Airport to Illinois flight route?

Data is based on round-trip flight searches on KAYAK over the past month.

The cheapest ticket to Illinois from Frankfurt am Main Airport found in the last 5 days was to Chicago, at $699 round-trip. The most popular route is from Frankfurt am Main Airport (FRA) to Chicago O'Hare Intl Airport (ORD), and the cheapest round-trip airline ticket found on this route in the last 5 days was $699.

What is the cheapest time of day to fly to Illinois?

The average price for all round-trip flights from Frankfurt am Main Airport to Illinois depending on the time of departure, clicked by users on KAYAK in the last 2 weeks.

The cheapest time of day to fly to Illinois is generally in the morning, when round-trip flights cost $861 on average. Morning departures are around 1% cheaper than evening flights, on average. The most expensive time of day to fly to Illinois is generally in the evening, which is peak travel time and where the average cost of a ticket is $872.

Can I save money by flying with a layover from Frankfurt am Main Airport to Illinois?

The average round-trip price for all non-stop flights, flights with one layover, and flights with two layovers for the route found by users searching on KAYAK in the last 2 weeks.

Yes, flying with a layover may cost you more time, but you can also save money on the route, with a 2 stops layover the cheapest option at $832 on average.

What is the cheapest month to fly from Frankfurt am Main Airport to Illinois?

To calculate monthly average prices, KAYAK takes all prices for each month over the last year for round-trip flights from Frankfurt am Main Airport to Illinois, removes the top 0.1% to account for outliers, and then takes the median of all values for each month.

The cheapest month for flights from Frankfurt am Main Airport to Illinois is November, when tickets cost $697 (return) on average. On the other hand, the most expensive months are July and June, when the average cost of round-trip tickets is $995 and $915 respectively.

What’s the cheapest day of the week to fly from Frankfurt Airport to Illinois?

The average price of all round-trip flights from Frankfurt am Main Airport to Illinois clicked on KAYAK for each day over the last 12 months.

Your flight ticket price will generally be cheaper if you fly to Illinois on a Thursday and more expensive on a Saturday. On your return trip to Frankfurt Airport, you should consider flying back on a Tuesday, and avoid Saturdays for better deals.

How far in advance should I book a flight from Frankfurt am Main Airport to Illinois?

To calculate weekly average prices, KAYAK takes all prices for each week before departure over the last year for round-trip flights from Frankfurt am Main Airport to Illinois, removes the top 0.1% to account for outliers, and then takes the average of all the values for each week.

To get a below average price on the flight from Frankfurt am Main Airport to Illinois, you should book around 2 weeks before departure, which saves you about 31% compared to booking last minute. For the absolute cheapest price, our data suggests you should book 19 weeks before departure.

Find deals

Good to know

Low season

February

Cheapest flight

$380
Best time to beat the crowds with an average 18% drop in price.
Most popular time to fly with an average 4% increase in price.
Flight from Frankfurt am Main to St. Louis

Flights from Frankfurt to Illinois: the best tips from KAYAK users

Insights shared by verified travelers who flew the route from Frankfurt to Illinois 
Learn how KAYAK collects reviews and tips from users.
KEVINFlew with Lufthansa
FRA
-
ORD
Dec 2025
Don't buy business class. It"s a relatively short day time flight. and not worth the extra expense. Stick with premium economy.
HeatherFlew with Lufthansa
FRA
-
ORD
Aug 2024
They are super strict on carry-on size and weight. I have never seen an airline weigh a carry-on before. If you are flying through Germany, make sure to alott yourself extra time to stand in a giant line for a passport check, even though it was already checked when boarding to Germany (not sure what could have changed with it during the flight!). They had given some of our seats away on our connecting flight because we barely made it to the gate in time for departure.
Verified travelerFlew with Lufthansa
FRA
-
ORD
Mar 2024
Avoid Frankfurt and O'Hare if you can. Use Amsterdam as your European hub and Minneapolis or Dallas as your hub in middle America.

FAQs - booking Illinois flights

  • How does KAYAK find such low prices on flights from Frankfurt Airport to Illinois?

    KAYAK is a travel search engine. That means we look across the web to find the best prices we can find for our users. With over 2 billion flight queries processed yearly, we are able to display a variety of prices and options on flights from Frankfurt Airport to Illinois.

  • How does KAYAK's flight Price Forecast tool help me choose the right time to buy my flight ticket from Frankfurt Airport to Illinois?

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight from Frankfurt Airport to Illinois is likely to change within 7 days, so travelers know whether to wait or book now.

  • What is the Hacker Fare option on flights from Frankfurt Airport to Illinois?

    Hacker Fares allow you to combine one-way tickets in order to save you money over a traditional round-trip ticket. You could then fly from Frankfurt Airport to Illinois with an airline and back with another airline.

  • What is KAYAK's "flexible dates" feature and why should I care when looking for a flight from Frankfurt Airport to Illinois?

    Sometimes travel dates aren't set in stone. If your preferred travel dates have some wiggle room, flexible dates will show you all the options when flying from Frankfurt Airport to Illinois up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

Top tips for finding cheap flights to Illinois

  • Looking for a cheap flight? 25% of our users found tickets from Frankfurt Airport to the following destinations at these prices or less: Chicago $874 one-way - $846 round-trip

Everything you need to know for your flight from Frankfurt to Illinois

Information on your arrival and departure airports

Frankfurt Airport (FRA)