$478 Find Cheap Flights from Billund to Illinois

This is the cheapest round-trip flight price found by a KAYAK user in the last 72 hours by searching for a flight from Billund to Illinois departing on 11/10. 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 Billund 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 Billund to Illinois, as well as popular online travel agencies
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Flight Deals

Book Cheap Billund 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 Billund 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 Billund to Illinois

Mon, Nov 10 - Mon, Nov 17
Air France Logo
6:00 am - 2:20 pmBLL-ORD
15h 20m1 stop
Air France Logo
5:20 pm - 2:35 pmORD-BLL
14h 15m1 stop
$478Air France
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Mon, Nov 10 - Mon, Nov 17
Air France Logo
2:30 pm - 12:01 amBLL-ORD
16h 31m2 stops
Air France Logo
5:20 pm - 2:35 pmORD-BLL
14h 15m1 stop
$481Air France
Find Deal
Mon, Nov 10 - Mon, Nov 17
Multiple Airlines Logo
2:30 pm - 12:01 amBLL-ORD
16h 31m2 stops
Multiple Airlines Logo
1:25 pm - 9:40 amORD-BLL
13h 15m2 stops
$492Multiple Airlines
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Mon, Nov 10 - Mon, Nov 17
Delta Logo
10:25 am - 2:20 pmBLL-ORD
10h 55m1 stop
Delta Logo
5:20 pm - 2:35 pmORD-BLL
14h 15m1 stop
$504Delta
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Mon, Nov 10 - Mon, Nov 17
Delta Logo
6:00 am - 5:53 pmBLL-ORD
18h 53m2 stops
Delta Logo
5:08 pm - 2:35 pmORD-BLL
14h 27m2 stops
$510Delta
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Fri, Feb 6 - Mon, Feb 16
Multiple Airlines Logo
10:25 am - 3:29 pmBLL-STL
36h 04m2 stops
Multiple Airlines Logo
4:05 pm - 9:45 amSTL-BLL
34h 40m2 stops
$510Multiple Airlines
Find Deal
Sat, Nov 8 - Wed, Nov 12
United Airlines Logo
6:45 am - 3:20 pmBLL-ORD
15h 35m1 stop
United Airlines Logo
6:25 pm - 1:25 pmORD-BLL
12h 00m1 stop
$532United Airlines
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Sat, Nov 8 - Wed, Nov 12
United Airlines Logo
2:15 pm - 11:43 pmBLL-ORD
16h 28m2 stops
United Airlines Logo
1:00 pm - 10:00 amORD-BLL
14h 00m2 stops
$537United Airlines
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Thu, Nov 6 - Mon, Nov 10
Lufthansa Logo
10:35 am - 1:55 pmBLL-STL
34h 20m1 stop
Lufthansa Logo
1:10 pm - 9:40 amSTL-BLL
13h 30m2 stops
$575Lufthansa
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Thu, Mar 5 - Mon, Mar 9
Lufthansa Logo
2:00 pm - 1:55 pmBLL-STL
30h 55m1 stop
Lufthansa Logo
1:10 pm - 9:40 amSTL-BLL
14h 30m2 stops
$601Lufthansa
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Booking Insights

KAYAK's insights & trends for Billund to Illinois flights

Get data-powered insights and trends into flights from Billund 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 Billund 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 Billund to Illinois departing in November.

What is the cheapest month to fly from Billund to Illinois?

To calculate monthly average prices, KAYAK takes all prices for each month over the last year for round-trip flights from Billund 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 Billund to Illinois is February, when tickets cost $481 (return) on average. On the other hand, the most expensive months are July and June, when the average cost of round-trip tickets is $809 and $693 respectively.

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

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

How far in advance should I book a flight from Billund 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 Billund 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 Billund to Illinois, you should book around 5 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.

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Good to know

Low seasonFebruary
Cheapest flight$478
Best time to beat the crowds with an average 26% drop in price.
Most popular time to fly with an average 4% increase in price.
Flight from Billund to Chicago

FAQs - booking Illinois flights

  • How does KAYAK find such low prices on flights from Billund 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 Billund to Illinois.

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

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight from Billund 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 Billund 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 Billund 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 Billund 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 Billund to Illinois up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

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

    The cheapest time of day to fly to Illinois is generally in the morning, when round-trip flights cost $564 on average. The most expensive time of day to fly to Illinois is generally in the afternoon, which is peak travel time and where the average cost of a ticket is $595.

Reviews of the top airline flying from Billund to Illinois

 
See real verified KAYAK customer reviews for airlines flying from Billund 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 Billund 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.
6.8
LufthansaOverall score based on 7511 reviews
7.0Boarding
6.3Food
7.6Crew
6.4Entertainment
6.8Comfort
Airline reviews

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

10.0 ExcellentAnonymous, Oct 2025FRA - ORD
Read more Lufthansa reviews

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

Luggage transfer in Chicago was not performed in time. I received my luggage at my destination two days later.

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

It was a short flight, everything was good with it.

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.

The crew was the best I’ve ever encountered. Business class was spacious, immaculate, and very modern.

I wish seats were not reclinable. It's so claustrophobic when the person in front of you spends most of a nine hour flight leaned all the way back. The crew was really nice though and the dinner (red Thai curry) was pretty compelling.

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.

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

Information on your arrival and departure airports

Billund (BLL)

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