308€ Find Cheap Flights from Frankfurt am Main 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 am Main to Illinois departing on 09.09.. 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 am Main to Illinois

 
Here are some of the best deals found on KAYAK recently from the most popular airlines for return flights from Frankfurt am Main 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 return flight deals from Frankfurt am Main to Illinois

Wed, 2. Sep - Sun, 27. Sep
TAP AIR PORTUGAL Logo
13:30 - 12:40
FRA
-
ORD
30h 10m
1 stop
TAP AIR PORTUGAL Logo
18:00 - 18:45
ORD
-
FRA
17h 45m
1 stop
560 €TAP AIR PORTUGAL
Thu, 1. Oct - Sun, 31. Jan
Scandinavian Airlines Logo
15:20 - 16:10
FRA
-
ORD
31h 50m
1 stop
Scandinavian Airlines Logo
19:15 - 9:45
ORD
-
FRA
31h 30m
1 stop
563 €Scandinavian Airlines
Tue, 3. Nov - Sun, 8. Nov
Icelandair Logo
13:05 - 17:20
FRA
-
ORD
11h 15m
1 stop
Icelandair Logo
18:30 - 12:10
ORD
-
FRA
10h 40m
1 stop
568 €Icelandair
Thu, 19. Nov - Thu, 3. Dec
Scandinavian Airlines Logo
10:30 - 16:45
FRA
-
ORD
13h 15m
1 stop
Scandinavian Airlines Logo
19:15 - 19:45
ORD
-
FRA
17h 30m
1 stop
569 €Scandinavian Airlines
Mon, 2. Nov - Mon, 9. Nov
Icelandair Logo
13:05 - 17:20
FRA
-
ORD
11h 15m
1 stop
Icelandair Logo
18:30 - 12:10
ORD
-
FRA
10h 40m
1 stop
570 €Icelandair
Sun, 30. Aug - Fri, 25. Sep
Icelandair Logo
7:25 - 18:15
FRA
-
ORD
17h 50m
1 stop
Icelandair Logo
19:25 - 13:00
ORD
-
FRA
10h 35m
1 stop
574 €Icelandair
Thu, 3. Sep - Thu, 10. Sep
Lufthansa Logo
12:15 - 22:43
FRA
-
PIA
17h 28m
2 stops
Lufthansa Logo
10:32 - 14:05
PIA
-
FRA
20h 33m
1 stop
722 €Lufthansa
Wed, 2. Sep - Thu, 17. Sep
Lufthansa Logo
8:15 - 17:45
FRA
-
MLI
16h 30m
2 stops
Lufthansa Logo
14:05 - 12:05
MLI
-
FRA
15h 00m
2 stops
724 €Lufthansa
Thu, 3. Sep - Thu, 10. Sep
United Airlines Logo
6:35 - 19:03
FRA
-
PIA
19h 28m
2 stops
United Airlines Logo
8:29 - 9:10
PIA
-
FRA
17h 41m
2 stops
733 €United Airlines
Sun, 18. Oct - Mon, 19. Oct
British Airways Logo
6:40 - 15:58
FRA
-
MLI
16h 18m
2 stops
British Airways Logo
16:23 - 10:45
MLI
-
FRA
35h 22m
3 stops
1.866 €British Airways
Booking Insights

KAYAK's insights & trends for Frankfurt am Main to Illinois flights

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

How much is a return flight from Frankfurt am Main to Illinois?

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

What is the cheapest Frankfurt am Main 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 found in the last 5 days was to Chicago, at 586 € return. The most popular route is from Frankfurt am Main Airport (FRA) to Chicago O'Hare Intl Airport (ORD), and the cheapest return airline ticket found on this route in the last 5 days was 586 €.

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

The average price for all round-trip flights from Frankfurt am Main 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 retur flights cost 775 € on average. Morning departures are around 3% 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 803 €.

What is the cheapest month to fly from Frankfurt am Main 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 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 to Illinois is November, when tickets cost 607 € (return) on average. On the other hand, the most expensive months are July and June, when the average cost of return tickets is 862 € and 802 € respectively.

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

The average price of all round-trip flights from Frankfurt am Main 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 Wednesday and more expensive on a Saturday. On your return trip to Frankfurt am Main, you should consider flying back on a Thursday, and avoid Mondays for better deals.

How far in advance should I book a flight from Frankfurt am Main 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 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 a flight from Frankfurt am Main to Illinois, you should book around 2 weeks before departure, which saves you about 32% compared to booking last-minute. For the absolute cheapest price, our data suggests you should book 19 weeks before departure.

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

Insights shared by verified travellers who flew the route from Frankfurt am Main 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 am Main 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 am Main to Illinois.

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

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

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

    Hacker Fares allow you to combine one-way tickets in order to save you money over a traditional return ticket. You could then fly from Frankfurt am Main 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 am Main 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 am Main to Illinois up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

Reviews of the top 5 airlines flying from Frankfurt am Main 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 am Main 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.
7,8
KLMOverall score based on 1543 reviews
7,8Boarding
7,3Food
7,7Comfort
8,4Crew
7,2Entertainment
Airline reviews

Crew is not the cheerful type. very slow meal service (this is their style as have flown this many times)

6,0 GoodGlenn, Feb 2026
AMS - JFK
Read more KLM reviews

Crew is not the cheerful type. very slow meal service (this is their style as have flown this many times)

The baggage drop-off in Stuttgart is bad: after online check-in you cannot use the automated baggage drop off as indicated on the website. You can use the terminals but have to cue to 1 of three open and slowly working counters to drop the bags. took about 45 minutes wait time.

Legroom not all it could be, especially when the seat in front is reclined. Otherwise it was good, food and beverage were nice.

This fight left ahead of time which meant it arrived early which was great. Staff were very professional, but as with all these Short hop Flights the food was a disappointing snack There was no entertainment on this flight, but I did not expect any

I flew premium economy and this was a good option. Although the seats didn’t recline much, I was able to get some sleep with my head propped against the window. The food was good and the entertainment was wonderful The staff were very attentive and professional

Seats were nice and comfy. Crew was polite and attentive. Business class is awesome and worth the money.

Good experience, just i couldn’t connect me to the wifi

It was operated by Delta. Boarding took a long time. How difficult can it be? Overall decent trip. Liked the Salt Lake City airport. Better option than Chicago for transfers.

We left one hour late because of technical difficulties. The economy comfort seats are great for the price. The crew was mediocre, they do not provide a pleasant experience, they just deliver food and drinks and give orders, not very amicable, no service and hospitality focus.

Seats actually fit a human! Snack options were a bit lame but that’s ok

United was excellent. We had very good experience flying the carrier. Certainly. We will opt to fly them for sure. Lufthansa is out.

There was a little turbulence taking off and landing but mostly it was too late for me to make my connecting flight to Greensboro. Everything else was excellent.

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.

The crew was generally professional. Though one of the crew members seemed to be easily annoyed, the others were fine and helpful. The green olives and almonds snack was really good. A great idea, and nice balance of tastes.

Would've been great if Lufthansa union cockpit pilots didn't strike for 2 days and caused a chaos to my returning plans to USA, and then after rebooking a flight 2 days later tge plane departed 35 min later. So I did not have a good experience.

An international flight on an apron is pretty unusual in my 40 years of traveling. Departure delay. Luggage despite over an hour connection did not make it to the flight. Actually still in Germany. My luggage was not moved until I reached my final destination despite knowing it to be left in Germany upon my arrival in Chicago. The service left me a little off, both going and returning from Europe. Light on in the cabin even during a night flight and lots of traffic no matter what. Maybe passengers want more service? As a frequent traveler i just want to be able to sleep, the food will be better at the destination anyway. So since the cabin crew woke me up I asked for a cocktail, I did not get the best response although sitting in row 20 premium economy. I usually fly premium economy or business and my 2 flight to Europe in 2025 with United both had luggage delays and other minor issues. American flights to Australia, Canada and Europe went smoothly and Premium plus feels very much like business light. Is United Club becoming a waste and Silver/Gold levels another waste??

This flight leg was fantastic - super comfortable and a great selection of things to watch on the TV. Staff were excellent, really above and beyond.

Could have said yes to a glass of wine 🍷 instead of saying we'll come around in a couple of hours

Inoperable monitor left no entert for 9 hours. Crew was not helpful Food was awful.

One problem, but a serious one - the plane is built with electric windows that tint dark to reduce light. Sitting next to the window is VERY UNCOMFORTABLE as it emits so much HEAT in the face when tinted.

The ticket was reserved in my name but not paid for by underpricer. Alaska airlines was unable to issue my ticket (could not connect the ticket with the PNR) due to an error with underpricer and I spent the better part of 2 hours at the ticket counter trying to rectify.

Terrible way of boarding in Reykjavik. Seats comfortable. Meal was good.

Unlike my prior three connections on this latest journey, this flight was fairly good. Only issue was boarding as it was once again one of those Icelandic issues of bunch up, walk in the rain to a bus that then has you run up three flights of stairs to board the plain. I was in Saga class but the bus scramble eliminates any chance you get on first and have to then find a place to squeeze your carry on into an overhead that the people in economy populate so they can grab it on their way out up front. But unlike other Icelandic flights this journey I did find more the of the business class like accommodations then the other air segments. This one found a pillow and blanket waiting for me and I actually received a small cup of sparkling wine and had a bottle of water in place. Service was attentive and the flight departed and arrived on time. Received a menu and had choices of a hot or cold meal. I choose the hot which was cod and it was good. Decent size portion, salad and a choice of dinner rolls. Beverage menu was a selection of wines, beer and soft drinks. Desert was a small Tiramisu. Overall the six hour flight was a good experience for the price point.

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.

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

Comfort of seats is not good. Like sitting on a rock for 6 hours. Also no in flight food and limited beverages unless you pay is not nice. Need flight to be dark during the “night” but attendants don’t ask for shades to be lowered..

Good. Lacking overhead bin space. No food offered but you can order online or in flight and pay for snacks.

We had to be bussed to the plane. And it was raining. Not a pleasant experience.

So Iceland Air is one step above Spirit Airlines. They do not feed you unless you pay for it or are in Saga Class. So, bring your food. They have a drink service, but it's in a large Dixie cup. Ask for the can, that is the only way you'll get a real drink. Also, we missed our connecting flight so they put us up in a flea-bag motel. Don't get me wrong, the staff was nice and friendly, however, there was no shower gel or shampoo in the hotel. We have to go to the corner store to pick some up. The room was not in great shape. Holes in the bathroom, a badly repaired ceiling in the room. The window was warn out. So, you get the just of how bad it was.

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

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

I don’t understand how they charge as much as they do for such a poor experience

I wish the plane had pod seating for business class. I had a window seat (8K) and I had to climb over the person sitting on the aisle when I needed to get up. Also there is no partition between the seats for privacy when sleeping. The Asian airlines have much nicer business class seating. Their seats are wider for better comfort when sleeping.

The seat space seemed small especially when the person ahead reclined but other than that, very good.

Food was poor quality and the screens for entertainment didn’t work properly

I darted through the Frankfurt airport to make my connecting flight. I asked if it was a possibility to upgrade and the agent did. This was the kindest gesture and it made up for the previous delayed flight and distress/anxiety of anticipating that Zi was going to miss my Frankfurt-Chicago connection. I cannot express my gratitude for the upgrade.. I am 5feet 10 inches do the leg space was amazing.

I meant this flight was not good, the one from Tirana to Frankfurt was better!

I was very grateful for Lufthansa's role in organizing mobility support. The touchscreen on my seat was faulty: slow, stained (I couldn't get it clean), and glitchy. This made selecting movies extremely time consuming, and twice I had to start all over from the beginning.

Our flights were severely delayed, then canceled and we had to fly out next day with no sleep accommodation help. This led to our baggage being lost and the service reps after baggage couldn’t be bothered to help. They kept sending us to different counters when we were at the right counter to begin with. The only saving grace was the angel woman supervisor with blond hair who helped us put in a missing baggage claim.

I will never want to book with these people. They are arrogant and rude. Food was really really bad, crew was even worst

Easy, straightforward boarding process. Flight attendant was lovely and attentive, food was delicious - especially dinner, I had the roasted chicken in a mushroom sauce with potatoes - and entertainment selection was top notch. I would fly with BA again.

I love FRA - LCY route. So much better compared to the FRA - LHR route and the price differential is ZERO

It's useless to complain about the space and the back of the seat, making you sitting vertically like a candle. it's your business model. The "food" - there is no food. But I don't care about the food. It's the seating.

Flight take off delayed 30 minutes; arrived 15 minutes late. Had to take bus from terminal to plane, delaying boarding and unloading.

The checkin experience was terrible. Once we got to the counter, it took them 40 minutes to check us in. Nothing complicated. Just 6 boarding passes and two checked bags.

Great crew! Average flight. T5 at Heathrow is not such as nice experience compared to other major International airports.

Our stroller got lost when flying from San Diego to Frankfurt and our luggage got lost when flying back from Frankfurt to San Diego, We had to rent a stroller during our 4 week stay and had to no stroller during our trip back to the US. Our suitcase is also still missing. We sent and email 3 weeks ago and are still waiting for somebody to get back to us.

They ran out of headphones so my 3rd daughter couldn’t use the onboard TV the entire flight. They also rain out of food, so my 1st daughter didn’t get to choose her entrees or snack (chicken or cheese) because by the time they got to the last row they only had chicken left. Luckily she is not a vegetarian.

Spending 10 hours on a flight with no video or wifi access due to issues per stewardess was not enjoyable nor acceptable. Will follow up directly with the airline as well

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

Cabin class types available on flights to Illinois

Cabin classes available on flights to Illinois. Prices are the lowest found on KAYAK over the last 7 days. Price and availability is not guaranteed.