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Cheap flights from Illinois to London from $391

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Illinois to London departing on 7/29. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
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0 bags

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Find the cheapest flights from Illinois to London

Cheap round-trip flights

Enter your travel dates to find the best prices.
Multiple Airlines Logo
7:25 pm - 10:20 pm
ORD
-
LTN
20h 55m
2 stops
Multiple Airlines Logo
9:50 pm - 11:50 am
LTN
-
ORD
20h 00m
1 stop
$846Multiple Airlines
Sun, Sep 6 - Sat, Sep 19
Multiple Airlines Logo
9:00 pm - 7:50 pm
ORD
-
LTN
16h 50m
3 stops
Multiple Airlines Logo
3:15 pm - 6:15 pm
LTN
-
ORD
33h 00m
2 stops
$847Multiple Airlines
Wed, Sep 2 - Tue, Sep 8
Multiple Airlines Logo
3:45 pm - 9:00 am
ORD
-
LTN
11h 15m
1 stop
Multiple Airlines Logo
9:40 am - 9:35 pm
LTN
-
ORD
17h 55m
2 stops
$850Multiple Airlines
Wed, Sep 16 - Tue, Sep 29
Multiple Airlines Logo
9:55 am - 3:45 pm
ORD
-
LTN
23h 50m
2 stops
Multiple Airlines Logo
9:40 am - 7:25 pm
LTN
-
ORD
15h 45m
2 stops
$851Multiple Airlines
Wed, May 27 - Tue, Jun 2
Multiple Airlines Logo
9:00 pm - 7:50 pm
ORD
-
LTN
16h 50m
3 stops
Multiple Airlines Logo
3:15 pm - 6:15 pm
LTN
-
ORD
33h 00m
2 stops
$852Multiple Airlines
Wed, Aug 26 - Tue, Sep 1
Multiple Airlines Logo
8:50 am - 1:25 pm
ORD
-
LTN
22h 35m
3 stops
Multiple Airlines Logo
5:20 pm - 4:59 pm
LTN
-
ORD
29h 39m
3 stops
$853Multiple Airlines
Tue, Jun 2 - Tue, Jun 9
Multiple Airlines Logo
10:43 am - 1:25 pm
ORD
-
LTN
20h 42m
3 stops
Multiple Airlines Logo
12:45 pm - 4:00 pm
LTN
-
ORD
33h 15m
2 stops
$854Multiple Airlines
Tue, Jun 2 - Tue, Jun 9
Multiple Airlines Logo
10:25 pm - 5:00 pm
ORD
-
LTN
12h 35m
2 stops
Multiple Airlines Logo
12:45 pm - 12:40 pm
LTN
-
ORD
29h 55m
2 stops
$855Multiple Airlines
Sat, Aug 1 - Wed, Aug 12
Multiple Airlines Logo
10:25 pm - 10:15 pm
ORD
-
LTN
17h 50m
2 stops
Multiple Airlines Logo
12:45 pm - 12:40 pm
LTN
-
ORD
29h 55m
2 stops
$856Multiple Airlines
Wed, Aug 5 - Wed, Aug 12
Multiple Airlines Logo
3:50 pm - 3:45 pm
ORD
-
LTN
17h 55m
2 stops
Multiple Airlines Logo
5:30 pm - 4:00 pm
LTN
-
ORD
28h 30m
2 stops
$857Multiple Airlines
Wed, May 27 - Thu, Jun 4

momondo Fare Finder

 
Customize your flight search to find flights from Illinois to London Luton Airport that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, momondo users made 832,500 searches. Data last updated May 16, 2026.
Use the filters below to find and compare flights from Illinois to London Luton Airport that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

ChicagoLondon

ORD - LTN

ORDLTN

Chicago O'Hare Intl

Sun 9/6

7:25 pm-10:20 pm

2 stops20h 55m

London Luton

Sat 9/19

9:50 pm-11:50 am

1 stop20h 00m

$846

ChicagoLondon

ORD - LTN

ORDLTN

Chicago O'Hare Intl

Wed 9/2

9:00 pm-7:50 pm

3 stops16h 50m

London Luton

Tue 9/8

3:15 pm-6:15 pm

2 stops33h 00m

$847
Quickest round-trip

ChicagoLondon

ORD - LTN

ORDLTN

Chicago O'Hare Intl

Wed 9/16

3:45 pm-9:00 am

1 stop11h 15m

London Luton

Tue 9/29

9:40 am-9:35 pm

2 stops17h 55m

$850

ChicagoLondon

ORD - LTN

ORDLTN

Chicago O'Hare Intl

Wed 5/27

9:55 am-3:45 pm

2 stops23h 50m

London Luton

Tue 6/2

9:40 am-7:25 pm

2 stops15h 45m

$851

ChicagoLondon

ORD - LTN

ORDLTN

Chicago O'Hare Intl

Wed 8/26

9:00 pm-7:50 pm

3 stops16h 50m

London Luton

Tue 9/1

3:15 pm-6:15 pm

2 stops33h 00m

$852

ChicagoLondon

ORD - LTN

ORDLTN

Chicago O'Hare Intl

Tue 6/2

8:50 am-1:25 pm

3 stops22h 35m

London Luton

Tue 6/9

5:20 pm-4:59 pm

3 stops29h 39m

$853

ChicagoLondon

ORD - LTN

ORDLTN

Chicago O'Hare Intl

Tue 6/2

10:43 am-1:25 pm

3 stops20h 42m

London Luton

Tue 6/9

12:45 pm-4:00 pm

2 stops33h 15m

$854

ChicagoLondon

ORD - LTN

ORDLTN

Chicago O'Hare Intl

Sat 8/1

10:25 pm-5:00 pm

2 stops12h 35m

London Luton

Wed 8/12

12:45 pm-12:40 pm

2 stops29h 55m

$855

ChicagoLondon

ORD - LTN

ORDLTN

Chicago O'Hare Intl

Wed 8/5

10:25 pm-10:15 pm

2 stops17h 50m

London Luton

Wed 8/12

12:45 pm-12:40 pm

2 stops29h 55m

$856

ChicagoLondon

ORD - LTN

ORDLTN

Chicago O'Hare Intl

Wed 5/27

3:50 pm-3:45 pm

2 stops17h 55m

London Luton

Thu 6/4

5:30 pm-4:00 pm

2 stops28h 30m

$857

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first
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See travel insights to London from

How to get the cheapest flight ticket from Illinois to London Luton Airport

Look no further. We've gone through all the searches for this route on momondo so you have the important information and insights to find the cheapest flight ticket for your trip

How long does it take to fly to London Luton Airport?

If you’re flying from a popular airport in Illinois, such as Chicago or Peoria, and flying into London Luton Airport, then you can expect flight times to average 9h 30m and 9h 55m, respectively.

Cheap Illinois to London Luton Airport flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from Illinois to London Luton Airport

Fastest flight time

14h 32m

Direct flights

None
The fastest flight from Illinois to London Luton Airport takes 14h 32m
There are no direct flights from Illinois to London Luton Airport. There are no popular flight routes from Illinois to London Luton Airport.
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Frequently asked questions about flying from Illinois to London Luton Airport

  • When did momondo last update prices for flights from Illinois to London Luton Airport?

    Prices for flights from Illinois to London Luton Airport were last updated today.

  • How old do you have to be to fly from Illinois to London Luton Airport?

    The minimum age for a child to fly alone is five, but airlines offering an unaccompanied minor (UNMR) service may have their age restrictions, such as regulations concerning flight duration, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from Illinois to London Luton Airport.

  • What documentation or ID do you need to fly to London Luton Airport?

    The required travel and health documents for your London Luton Airport trip may vary depending on your itinerary and personal circumstances. As a general rule, you should carry multiple documents, including a national ID card or driver's license and a passport valid for six months after your intended arrival at London Luton Airport. We recommend that you seek guidance from your airline or a reliable third party such as IATA.

Traveling to a place near London?

Book flights to London if you plan to visit one of these locations
Hounslow
Gatwick
Milton Keynes
Dover
Luton
Hayes
Crawley
Wembley
Slough
Croydon
Stansted
Watford
Harrow
Brentwood
Dartford
Cobham
Folkestone
Romford
Uxbridge
Guildford

Why use momondo?

Why should I use momondo to find a flight deal from Illinois to London?

We help find the flight that best suits your needs, momondo compares prices from hundreds of airlines and travel agents and helps you filter them to find the best flight from Illinois to London for you.

Can I find flights from Illinois to London with flexible booking policies on momondo?

momondo does allow users to show only those flights to London from Illinois which offer a flexible booking policy as well as other useful filters and features.

How can momondo help me find flights from Illinois to London?

momondo provides multiple filters to help you find the best flight to London from Illinois. Filter by price, airline, airports, cabin, aircraft, payment method, number of stops and more.

I’m not ready to book a flight from Illinois to London right now. Can momondo alert me if prices change?

Yes momondo offers price alerts on flights to London from Illinois. After performing a search on this page you should be able to see the price alert set up feature. Simply provide a valid email address and momondo will instantly alert you when prices change.

An easier way to manage your London Luton Airport trip

We make it super easy to schedule, organize and travel with friends or family. Trips is free — and available to use no matter where you book.
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