$511 Find Cheap Flights from Frankfurt Airport to Illinois - Compare and Save

This is the cheapest one-way flight price found by a KAYAK user in the last 72 hours by searching for a flight from Frankfurt to Illinois departing on 9/12. 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

KAYAK searches hundreds of travel sites at once for deals on flights to Illinois

 
These are the airlines KAYAK users have selected most often from within our search results in flight searches from Frankfurt am Main to Illinois, as well as popular online travel agencies
These are the airlines KAYAK users have selected most often from within our search results in flight searches from Frankfurt am Main to Illinois, as well as popular online travel agencies
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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
Moline1 stop$868
St. Louis
St. Louis2 stops$733
Moline
Moline1 stop$868
St. Louis
St. Louis2 stops$733

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, Nov 2 - Mon, Nov 30
Delta Logo
6:55 am - 11:18 pm
FRA
-
STL
23h 23m
2 stops
Delta Logo
2:18 pm - 2:20 pm
STL
-
FRA
17h 02m
2 stops
$733Delta
Fri, Nov 6 - Wed, Nov 18
British Airways Logo
10:55 am - 5:54 pm
FRA
-
STL
13h 59m
1 stop
British Airways Logo
11:51 am - 10:20 am
STL
-
FRA
15h 29m
2 stops
$734British Airways
Fri, Nov 6 - Tue, Nov 17
Multiple Airlines Logo
2:15 pm - 11:18 pm
FRA
-
STL
16h 03m
2 stops
Multiple Airlines Logo
5:45 pm - 2:20 pm
STL
-
FRA
13h 35m
2 stops
$741Multiple Airlines
Mon, Aug 10 - Mon, Aug 17
Multiple Airlines Logo
5:20 pm - 7:55 pm
FRA
-
ORD
9h 35mnonstop
Multiple Airlines Logo
2:20 pm - 9:20 am
ORD
-
FRA
12h 00m
1 stop
$788Multiple Airlines
Wed, Aug 12 - Thu, Aug 20
Lufthansa Logo
10:50 am - 12:55 pm
FRA
-
ORD
9h 05mnonstop
Lufthansa Logo
9:40 pm - 4:00 pm
ORD
-
FRA
11h 20m
1 stop
$789Lufthansa
Fri, Nov 6 - Fri, Nov 13
Lufthansa Logo
7:20 am - 12:40 pm
FRA
-
ORD
12h 20m
1 stop
Lufthansa Logo
10:35 pm - 1:45 pm
ORD
-
FRA
8h 10mnonstop
$790Lufthansa
Sun, Oct 11 - Sat, Oct 17
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
$791United Airlines
Thu, Oct 15 - Thu, Oct 29
Air France Logo
10:40 am - 10:10 pm
FRA
-
MDW
18h 30m
1 stop
Air France Logo
6:45 pm - 2:20 pm
MDW
-
FRA
13h 35m
2 stops
$791Air France
Sun, Oct 18 - Fri, Oct 30
United Airlines Logo
6:35 am - 12:35 pm
FRA
-
ORD
13h 00m
1 stop
United Airlines Logo
5:20 pm - 7:30 am
ORD
-
FRA
8h 10mnonstop
$792United Airlines
Thu, Sep 17 - Thu, Oct 1
Air France Logo
10:40 am - 10:25 pm
FRA
-
MDW
18h 45m
1 stop
Air France Logo
10:48 am - 8:55 am
MDW
-
FRA
15h 07m
1 stop
$793Air France
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 August.

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 $709 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 $709.

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 $853 on average. Morning departures are around 2% 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 $870.

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 September, when tickets cost $330 (return) on average. On the other hand, the most expensive months are August and December, when the average cost of round-trip tickets is $1,107 and $529 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 3 weeks before departure, which saves you about 30% compared to booking last minute. For the absolute cheapest price, our data suggests you should book 25 weeks before departure.

Good to know

Low seasonNovember
Cheapest flight$511
Best time to beat the crowds with an average 9% drop in price.
Most popular time to fly with an average 5% increase in price.
Flight from Frankfurt Airport to Chicago

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

Insights shared by verified travelers who flew the route from Frankfurt to Illinois 
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 $910 one-way - $855 round-trip

Reviews of the top 3 airlines serving from Frankfurt to Illinois

 
See real verified KAYAK customer reviews for airlines flying from Frankfurt am Main to Illinois. Airline scores are aggregated from all reviews left by passengers on KAYAK after flying with an airline. KAYAK doesn’t show reviews that are older than 5 years. Learn how KAYAK collects reviews.
Need help choosing which airline to fly with from Frankfurt to Illinois? KAYAK airline reviews give an overall score for each airline based on loads of factors, including comfort, boarding, in-flight entertainment and more, to make your decision easier. See airline scores according to verified KAYAK customer reviews.
7.4
United AirlinesOverall score based on 9862 reviews
7.1Entertainment
7.7Boarding
7.3Comfort
8.1Crew
6.6Food
Airline reviews

The seats were very nice in premium economy. The service was good. The flight was slightly bumpy. Would have appreciated more updates from the pilots.

8.0 ExcellentDora Leigh, Jun 2026
FRA - EWR
Read more United Airlines reviews

The seats were very nice in premium economy. The service was good. The flight was slightly bumpy. Would have appreciated more updates from the pilots.

Very easy ! Use the kiosk and bag drop and right to security within 10 min

Prefer not to have an almost 3 hour delay with useless communication that wasn't accurate.

Over 5 hour delay with minimal updates or ability to standby for alternative flights. During boarding and 1 hr+ wait for takeoff, seats were drenched w water from air conditioning condensation and always leftover crumbs on carpet and seats

I flew from Barcelona to Chicago on UA yesterday. The flight was on time, the pilots did a great job and the flight attendants were super nice. All of them. Also food was good, and the drinks, including wine were served a few times during our flight. I highly recommend this airline.

Boarded early, left early, arrived 40 mins early! A win win for me!

These airplanes should be illegal. The seats are two tight, it is a safety issue. Wheelchair support was ridiculously slow. We almost missed our flight.

This flight is a quick way to get to Chicago, but a bit expensive.

The economy seat was much less comfortable for an international flight in terms of recline and moving space when food tray is expanded. Per entertainment, it would be amazing if I could connect my Bluetooth headset or ear phones to the entertainment screen. Or provide in-flight wifi to connect directly from my own device.

The clerk at check in for my bags was very rude. My credit card was hacked during my vacation and she told me it was not possible to pay in cash for my bag. “You bought the cheapest ticket, you should have bought a ticket that included a bag. If you cannot pay with a credit card, we will not let you on this flight”. She spoke to her supervisor and then told me , I could ask other passengers, if they would use their credit card to check my bag. I had to beg 5 different people, till one agreed to use their credit card. I payed them cash of course. This was a very stressful and humiliating experience for me. I strongly suggest you build in some kind of provision for travelers who got robbed.

We paid for saga class, which is the business class for international. My seat was broken and did not recline and my monitor for in-flight entertainment was broken.

The flight itself was fine, even with a one-hour delay leaving on the Reykjavik tarmac (the lost time was made up during flight). Our experience at the Reykjavik airport on arrival was terrible due mostly to the one hour it took for passport control. Only two stations were open for our category, and the room was full with a huge crowd.

I liked the crew but not the uncomfortable seats and lack of movie and tv selection.

Awful. The Iceland airport was a complete mess. Boarding was a chaotic, the seats were awful, there was a group of rowdy 20 something men in our row hooting and hollering, ordering alcoholic drink after drink. Yelling and laughing at the top of their lungs and the crew just went along with it. Passengers complained to the men, asking if they could keep it down (it was a night time flight so people wanted to sleep). They never listened crew continued to laugh with them, flirt with them and serve them more drinks. No free food or snacks, seats were horribly uncomfortable. Worst flight I've had in a long time

Repurchased food and it was moldy and expensive. But I figured it was bad luck so I purchased a cup-o-noodles, halfway through them we hit turbulence and the flight attendant was passing with the garbage, it would have been two seconds to grab it, but he was snarky grabbed someone else’s plastic cups and went to buckle up… I used the puke bags to secure the soup before it became an accessory. When he finally came around he gave me a face like a petulant child as I handed him the soup neatly wrapped in the paper then plastic bag. I watched a movie in silence as the rental or headphones was ridiculous at 4€ for those .10€ cheap plastic toys. No English subtitles on an American movie… crazy. I disliked the whinny little tourist trap and now I hope that it sinks into the ocean or erupts in a catastrophic eruption for their beloved “I live on an active volcano” pride.

At least one soda free, felt like I was nickeled to death.

Friendly flight crew. Airplane (757) configured as a domestic flight (no lie-flat seats) & no advanced meal selection.

When you consider the price I ended up paying for everything. This was not a good deal! I had no idea that this airline had changed to a bargain basement no frills airline. So, it was disappointing to have to pay for every little thing. The only thing included was water and coffee. You have to pay for everything else! So I just felt nickel and dime.

The Icelandair crew was so kind!!! Thank you for making my first trip to Paris a great one!

I am not going to fillo this out for each leg of my trip. My first review holds for the experience

The food on this flight was better than what we had getting to Rome. The flight was comfortable and the staff was great. One of the staff members was a stickler about the blankets in the aisle, which I get, but still. Overall, great flight and will fly with them again!

The legroom was lacking and the entertainment system lacked adequate selection of older films. Modern films are generally not very good.

The flight attendants were wonderful - one man put my carry on in the bin for me. Very attentive service. Loved the blanket and pillow waiting for me in economy. Food was excellent which is a surprise given the reputation of any airline food. Wine was fine with the meals. Delighted with the new movies - flight went by very quickly. I would definitely fly Lufthansa again.

My flight was cancelled, but it was not Kayak's fault. Kayak did require me to pay for the ticket twice to two different venders who paid Lufthansa. Kayak/Lufthansa owes me for the first booking I made first was fraudulent on the part of the subcontracting ticket seller. There will be litigation over this issue under the current passenger protection laws.

flight was half full, plenty of empty seats, was able to lie down across 4 seats, food was good, arrived on time

Generally good. Not their fault but the design of the Boeing 747 had seating supports directly in line with my legs. So my legs always had to straddle this support which caused body misallignment. Such poor design from Boeing. There was no USB port for me to charge my phone. The screen touch control was very poor.

I like crew. They are friendly. The flight was delayed to take off for 1hr and that caused panic at Houston Airport to catch connecting flight due to security check delay. If it has reached on time I would have sufficient time in collecting bags and security check

How about changing the personal out to more friendly human beings? This team was pretty arrogant. No fun!!

It was good. The seats in economy weren’t bad

Wonderful staff. The boarding process can be improved a little better by adequate prior communication but all in all they did fine. However the boarding gate was quite unfreindly to elderly and who needs help with sevral stairs.

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

Information on your arrival and departure airports