$511 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 9/23. 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

Wed, Sep 23 - Mon, Oct 26
British Airways Logo
9:50 pm - 3:55 pm
BLL
-
ORD
25h 05m
1 stop
British Airways Logo
1:43 pm - 12:20 pm
ORD
-
BLL
16h 37m
2 stops
$511British Airways
Sat, Sep 19 - Wed, Oct 21
British Airways Logo
12:30 pm - 12:35 pm
BLL
-
ORD
31h 05m
2 stops
British Airways Logo
1:43 pm - 12:05 pm
ORD
-
BLL
15h 22m
2 stops
$517British Airways
Tue, Sep 22 - Fri, Oct 23
Air France Logo
2:20 pm - 2:30 pm
BLL
-
ORD
31h 10m
1 stop
Air France Logo
5:10 pm - 10:25 pm
ORD
-
BLL
22h 15m
1 stop
$600Air France
Thu, May 21 - Tue, May 26
Delta Logo
6:00 am - 2:15 pm
BLL
-
ORD
15h 15m
1 stop
Delta Logo
4:20 pm - 1:30 pm
ORD
-
BLL
14h 10m
1 stop
$616Delta
Thu, May 21 - Tue, May 26
Delta Logo
11:45 am - 10:35 pm
BLL
-
ORD
17h 50m
2 stops
Delta Logo
4:20 pm - 9:35 am
ORD
-
BLL
10h 15m
1 stop
$621Delta
Thu, May 21 - Tue, May 26
Delta Logo
10:15 am - 5:56 pm
BLL
-
MDW
14h 41m
2 stops
Delta Logo
9:22 am - 9:35 am
MDW
-
BLL
17h 13m
2 stops
$621Delta
Wed, Sep 23 - Sat, Oct 24
Delta Logo
10:15 am - 2:30 pm
BLL
-
ORD
11h 15m
1 stop
Delta Logo
5:45 pm - 3:35 pm
ORD
-
BLL
14h 50m
2 stops
$623Delta
Mon, Sep 21 - Fri, Oct 23
Multiple Airlines Logo
6:00 am - 2:30 pm
BLL
-
ORD
15h 30m
1 stop
Multiple Airlines Logo
5:10 pm - 10:25 pm
ORD
-
BLL
22h 15m
1 stop
$624Multiple Airlines
Thu, Jun 18 - Thu, Jun 25
Lufthansa Logo
6:00 am - 11:00 am
BLL
-
ORD
12h 00m
1 stop
Lufthansa Logo
3:10 pm - 10:00 am
ORD
-
BLL
11h 50m
1 stop
$630Lufthansa
Sat, Aug 8 - Sat, Aug 15
Lufthansa Logo
6:00 am - 11:44 pm
BLL
-
STL
24h 44m
2 stops
Lufthansa Logo
1:18 pm - 2:10 pm
STL
-
BLL
17h 52m
2 stops
$726Lufthansa
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 September.

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 August, when tickets cost $417 (return) on average. On the other hand, the most expensive months are July and June, when the average cost of round-trip tickets is $560 and $535 respectively.

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 3 weeks before departure, which saves you about 35% compared to booking last minute. For the absolute cheapest price, our data suggests you should book 19 weeks before departure.

Good to know

Low seasonJanuary
Cheapest flight$511
Best time to beat the crowds with an average 15% drop in price.
Most popular time to fly with an average 34% 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.

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

Information on your arrival and departure airports