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Cheap flights from Illinois to London from $302

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 3/8. 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
6:30 pm - 11:00 pm
ORD
-
STN
22h 30m2 stops
Multiple Airlines Logo
6:30 am - 5:20 pm
STN
-
ORD
16h 50m2 stops
$547Multiple Airlines
Sun, Jan 18 - Tue, Jan 27
Multiple Airlines Logo
9:00 pm - 6:20 pm
ORD
-
STN
15h 20m1 stop
Multiple Airlines Logo
8:30 am - 7:15 pm
STN
-
ORD
16h 45m1 stop
$549Multiple Airlines
Tue, Feb 10 - Tue, Feb 17
Multiple Airlines Logo
7:15 am - 11:30 am
ORD
-
STN
22h 15m2 stops
Multiple Airlines Logo
8:10 am - 11:06 am
STN
-
ORD
32h 56m2 stops
$551Multiple Airlines
Sun, Jan 11 - Tue, Jan 20
Multiple Airlines Logo
7:30 pm - 4:40 pm
ORD
-
STN
16h 10m2 stops
Multiple Airlines Logo
6:00 am - 6:20 pm
STN
-
ORD
17h 20m2 stops
$555Multiple Airlines
Wed, Mar 11 - Wed, Mar 18
Multiple Airlines Logo
6:30 pm - 3:25 pm
ORD
-
STN
14h 55m2 stops
Multiple Airlines Logo
4:10 pm - 5:20 pm
STN
-
ORD
31h 10m2 stops
$560Multiple Airlines
Sat, Jan 10 - Tue, Jan 13
Multiple Airlines Logo
12:50 pm - 11:30 am
ORD
-
STN
16h 40m2 stops
Multiple Airlines Logo
8:10 am - 8:10 pm
STN
-
ORD
18h 00m2 stops
$562Multiple Airlines
Sun, Jan 11 - Tue, Jan 20
Multiple Airlines Logo
12:50 pm - 11:30 am
ORD
-
STN
16h 40m2 stops
Multiple Airlines Logo
8:10 am - 10:05 pm
STN
-
ORD
19h 55m3 stops
$569Multiple Airlines
Sun, Jan 11 - Tue, Jan 20
Multiple Airlines Logo
7:15 am - 11:30 am
ORD
-
STN
22h 15m2 stops
Multiple Airlines Logo
8:25 pm - 4:20 pm
STN
-
ORD
25h 55m2 stops
$580Multiple Airlines
Sun, Jan 11 - Tue, Jan 20
Turkish Airlines Logo
7:45 am - 4:50 pm
STL
-
STN
27h 05m2 stops
Turkish Airlines Logo
5:45 pm - 9:03 pm
STN
-
STL
33h 18m2 stops
$1,146Turkish Airlines
Tue, Mar 31 - Wed, Apr 8
Turkish Airlines Logo
7:45 am - 4:50 pm
STL
-
STN
27h 05m2 stops
Turkish Airlines Logo
10:50 am - 9:03 pm
STN
-
STL
40h 13m2 stops
$1,335Turkish Airlines
Tue, Mar 31 - Wed, Apr 8

Turkish Airlines flights from Illinois to London Stansted Airport

Our best Turkish Airlines deals on Illinois to London Stansted Airport flight tickets
Turkish Airlines
Mar 18
ORD12:50 pmChicago O'Hare Intl
28h 25m
1 stop
STN10:15 pmLondon Stansted
Mar 24
STN5:20 pmLondon Stansted
31h 05m
1 stop
ORD7:25 pmChicago O'Hare Intl
$623
Find similar
Turkish Airlines
Apr 8
ORD11:25 amChicago O'Hare Intl
23h 25m
1 stop
STN4:50 pmLondon Stansted
Apr 15
STN6:15 amLondon Stansted
33h 25m
1 stop
ORD9:40 amChicago O'Hare Intl
$639
Find similar
Turkish Airlines
Mar 17
ORD12:50 pmChicago O'Hare Intl
16h 00m
1 stop
STN9:50 amLondon Stansted
Mar 31
STN6:15 amLondon Stansted
18h 00m
1 stop
ORD6:15 pmChicago O'Hare Intl
$641
Find similar

momondo Fare Finder

 
Customize your flight search to find flights from Illinois to London Stansted 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 December 28, 2025.
Use the filters below to find and compare flights from Illinois to London Stansted Airport that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

ChicagoLondon

ORD - STN

ORDSTN

Chicago O'Hare Intl

Sun 1/18

6:30 pm-11:00 pm

2 stops22h 30m

London Stansted

Tue 1/27

6:30 am-5:20 pm

2 stops16h 50m

$547

ChicagoLondon

ORD - STN

ORDSTN

Chicago O'Hare Intl

Tue 2/10

9:00 pm-6:20 pm

1 stop15h 20m

London Stansted

Tue 2/17

8:30 am-7:15 pm

1 stop16h 45m

$549

ChicagoLondon

ORD - STN

ORDSTN

Chicago O'Hare Intl

Sun 1/11

7:15 am-11:30 am

2 stops22h 15m

London Stansted

Tue 1/20

8:10 am-11:06 am

2 stops32h 56m

$551

ChicagoLondon

ORD - STN

ORDSTN

Chicago O'Hare Intl

Wed 3/11

7:30 pm-4:40 pm

2 stops16h 10m

London Stansted

Wed 3/18

6:00 am-6:20 pm

2 stops17h 20m

$555

ChicagoLondon

ORD - STN

ORDSTN

Chicago O'Hare Intl

Sat 1/10

6:30 pm-3:25 pm

2 stops14h 55m

London Stansted

Tue 1/13

4:10 pm-5:20 pm

2 stops31h 10m

$560

ChicagoLondon

ORD - STN

ORDSTN

Chicago O'Hare Intl

Sun 1/11

12:50 pm-11:30 am

2 stops16h 40m

London Stansted

Tue 1/20

8:10 am-8:10 pm

2 stops18h 00m

$562

ChicagoLondon

ORD - STN

ORDSTN

Chicago O'Hare Intl

Sun 1/11

12:50 pm-11:30 am

2 stops16h 40m

London Stansted

Tue 1/20

8:10 am-10:05 pm

3 stops19h 55m

$569

ChicagoLondon

ORD - STN

ORDSTN

Chicago O'Hare Intl

Sun 1/11

7:15 am-11:30 am

2 stops22h 15m

London Stansted

Tue 1/20

8:25 pm-4:20 pm

2 stops25h 55m

$580

St. LouisLondon

STL - STN

STLSTN

Lambert-St Louis

Tue 3/31

7:45 am-4:50 pm

2 stops27h 05m

London Stansted

Wed 4/8

5:45 pm-9:03 pm

2 stops33h 18m

$1,146

St. LouisLondon

STL - STN

STLSTN

Lambert-St Louis

Tue 3/31

7:45 am-4:50 pm

2 stops27h 05m

London Stansted

Wed 4/8

10:50 am-9:03 pm

2 stops40h 13m

$1,335

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 Stansted 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 Stansted Airport?

The flight from Illinois to London Stansted Airport depends on which airports you’re departing and arriving from and whether or not you have a layover. If you fly from Chicago (a popular airport in Illinois) to London Heathrow Airport (the most popular airport in London Stansted Airport), then the flight time is 9h 28m on average. If you fly from Peoria (another popular airport in Illinois) to London Heathrow Airport, then the average flight time is 10h 05m.

Cheap Illinois to London Stansted Airport flight deals and tips

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

Fastest flight time

12h 20m

Direct flights

None
The fastest flight from Illinois to London Stansted Airport takes 12h 20m
There are no direct flights from Illinois to London Stansted Airport. There are no popular flight routes from Illinois to London Stansted Airport.
Search flight deals

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

    Prices for flights from Illinois to London Stansted Airport refresh daily.

  • How old do you have to be to fly from Illinois to London Stansted 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 Stansted Airport.

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

    The required travel and health documents for your London Stansted 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 Stansted 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
Gatwick
Hounslow
Milton Keynes
Dover
Luton
Slough
Guildford
Hayes
Dartford
Crawley
Brentwood
Watford
Wembley
Cobham
Folkestone
Romford
Richmond
Uxbridge
Chelmsford
Stansted

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?

Yes. momondo allows you to filter the results for Illinois to London flights to just show those with flexible booking policies.

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

momondo helps you find the best flight between Illinois and London by providing filters to narrow your choice of flights to those matching your criteria. You can select flights based on numerous factors such as price, departure and landing times, airport and airline.

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

If you are simply researching potential flights to London, momondo offers a useful price alert feature which will track prices for flights to London from Illinois and alert you when they change.

An easier way to manage your London Stansted 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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