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Cheap flights from Chicago to London from $363

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Chicago to London departing on 3/15. 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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Cheap round-trip flights

Enter your travel dates to find the best prices.
Multiple Airlines Logo
9:00 pm - 2:20 pm
ORD
-
STN
11h 20m
1 stop
Multiple Airlines Logo
6:30 am - 6:55 pm
STN
-
ORD
17h 25m
1 stop
$538Multiple Airlines
Tue, Mar 3 - Tue, Mar 10
Multiple Airlines Logo
9:00 pm - 6:20 pm
ORD
-
STN
15h 20m
1 stop
Multiple Airlines Logo
8:30 am - 3:00 pm
STN
-
ORD
11h 30m
1 stop
$540Multiple Airlines
Fri, Feb 27 - Sun, Mar 8
Multiple Airlines Logo
7:25 pm - 7:35 pm
ORD
-
STN
18h 10m
2 stops
Multiple Airlines Logo
8:30 am - 6:15 pm
STN
-
ORD
15h 45m
2 stops
$544Multiple Airlines
Thu, Apr 16 - Sun, Apr 19
Multiple Airlines Logo
7:20 pm - 9:20 pm
ORD
-
STN
20h 00m
2 stops
Multiple Airlines Logo
3:15 pm - 4:45 pm
STN
-
ORD
31h 30m
3 stops
$545Multiple Airlines
Mon, Mar 2 - Fri, Mar 6
Multiple Airlines Logo
10:25 pm - 8:30 pm
ORD
-
STN
16h 05m
2 stops
Multiple Airlines Logo
6:40 am - 9:25 pm
STN
-
ORD
20h 45m
2 stops
$546Multiple Airlines
Fri, Apr 24 - Fri, May 1
Multiple Airlines Logo
3:45 pm - 7:50 am
ORD
-
STN
10h 05m
1 stop
Multiple Airlines Logo
6:30 am - 2:00 pm
STN
-
ORD
13h 30m
1 stop
$549Multiple Airlines
Tue, Mar 31 - Tue, Apr 7
Multiple Airlines Logo
7:20 pm - 10:50 pm
ORD
-
STN
21h 30m
2 stops
Multiple Airlines Logo
12:00 pm - 5:45 pm
STN
-
ORD
34h 45m
2 stops
$556Multiple Airlines
Wed, Mar 4 - Sun, Mar 8
Multiple Airlines Logo
8:40 pm - 9:20 pm
ORD
-
STN
19h 40m
1 stop
Multiple Airlines Logo
6:30 am - 3:00 pm
STN
-
ORD
13h 30m
1 stop
$558Multiple Airlines
Mon, Mar 9 - Mon, Mar 16
Multiple Airlines Logo
7:15 pm - 12:40 am
ORD
-
STN
23h 25m
3 stops
Multiple Airlines Logo
6:00 pm - 4:10 pm
STN
-
ORD
28h 10m
2 stops
$560Multiple Airlines
Mon, Apr 20 - Sun, Apr 26
Multiple Airlines Logo
6:30 pm - 10:15 pm
ORD
-
STN
21h 45m
2 stops
Multiple Airlines Logo
5:20 pm - 5:20 pm
STN
-
ORD
30h 00m
2 stops
$563Multiple Airlines
Wed, Feb 25 - Sat, Feb 28

momondo Fare Finder

 
Customize your flight search to find flights from Chicago 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 February 15, 2026.
Use the filters below to find and compare flights from Chicago 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

Tue 3/3

9:00 pm-2:20 pm

1 stop11h 20m

London Stansted

Tue 3/10

6:30 am-6:55 pm

1 stop17h 25m

$538

ChicagoLondon

ORD - STN

ORDSTN

Chicago O'Hare Intl

Fri 2/27

9:00 pm-6:20 pm

1 stop15h 20m

London Stansted

Sun 3/8

8:30 am-3:00 pm

1 stop11h 30m

$540

ChicagoLondon

ORD - STN

ORDSTN

Chicago O'Hare Intl

Thu 4/16

7:25 pm-7:35 pm

2 stops18h 10m

London Stansted

Sun 4/19

8:30 am-6:15 pm

2 stops15h 45m

$544

ChicagoLondon

ORD - STN

ORDSTN

Chicago O'Hare Intl

Mon 3/2

7:20 pm-9:20 pm

2 stops20h 00m

London Stansted

Fri 3/6

3:15 pm-4:45 pm

3 stops31h 30m

$545

ChicagoLondon

ORD - STN

ORDSTN

Chicago O'Hare Intl

Fri 4/24

10:25 pm-8:30 pm

2 stops16h 05m

London Stansted

Fri 5/1

6:40 am-9:25 pm

2 stops20h 45m

$546

ChicagoLondon

ORD - STN

ORDSTN

Chicago O'Hare Intl

Tue 3/31

3:45 pm-7:50 am

1 stop10h 05m

London Stansted

Tue 4/7

6:30 am-2:00 pm

1 stop13h 30m

$549

ChicagoLondon

ORD - STN

ORDSTN

Chicago O'Hare Intl

Wed 3/4

7:20 pm-10:50 pm

2 stops21h 30m

London Stansted

Sun 3/8

12:00 pm-5:45 pm

2 stops34h 45m

$556

ChicagoLondon

ORD - STN

ORDSTN

Chicago O'Hare Intl

Mon 3/9

8:40 pm-9:20 pm

1 stop19h 40m

London Stansted

Mon 3/16

6:30 am-3:00 pm

1 stop13h 30m

$558

ChicagoLondon

ORD - STN

ORDSTN

Chicago O'Hare Intl

Mon 4/20

7:15 pm-12:40 am

3 stops23h 25m

London Stansted

Sun 4/26

6:00 pm-4:10 pm

2 stops28h 10m

$560

ChicagoLondon

ORD - STN

ORDSTN

Chicago O'Hare Intl

Wed 2/25

6:30 pm-10:15 pm

2 stops21h 45m

London Stansted

Sat 2/28

5:20 pm-5:20 pm

2 stops30h 00m

$563

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 Chicago 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 often are flights from Chicago to London delayed?

Historically, on average around 100% of flights between Chicago and London have experienced a delay on any given week. The average delay length over the past 12 months has been 56 minutes.

What is the most punctual flight time for Chicago to London flights?

Generally, flights departing in the morning tend to experience fewer delays. Flights at night have, in the past, seen delays more frequently in comparison.

What day of the week experiences the fewest flight delays on this route?

Thursday is statistically the day of the week which experiences the fewest number of delays on this flight route. Sunday has historically seen more delays on average compared to the rest of the week.

Which airline has the best punctuality record on Chicago to London flights?

According to our data, Atlas Air have had the least number of delays on this route over the last 12 months; with about 100% of their flights experiencing any sort of delay.

When to book flights from Chicago to London Stansted Airport

Are you open to changing your travel dates? Check out the ideal times to fly from Chicago to London Stansted Airport according to our flight data. Find out which month and days have the cheapest flights.
Estimated round-trip price

Cheap Chicago to London Stansted Airport (CHI to STN) flight deals and tips

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

Fastest flight time

14h 35m

Direct flights

None
The fastest flight from Chicago to London Stansted Airport takes 14h 35m
There are no direct flights from Chicago to London Stansted Airport. There are no popular flight routes from Chicago to London Stansted Airport.
Search flight deals

  • How far is Chicago to London Stansted by plane?

    London Stansted is 3946.5 mi away from Chicago. 14h 35m is a normal flight duration for this route.

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

    Prices for flights from Chicago to London Stansted Airport were last updated today.

  • How old do you have to be to fly from Chicago to London Stansted Airport?

    The minimum age a child must be to fly alone is five but airlines that offer an unaccompanied minor (UNMR) service will have their own age restrictions, including rules around flight length, timings, and stopovers. We always recommend checking with the individual airline you are booking with to travel from Chicago to London Stansted Airport.

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

    The travel and health documents required for your trip to London Stansted Airport can vary based on your itinerary and personal situation. As a rule, consider having multiple documents such as a national ID card or driver’s license, and a passport valid for six-months after you plan to arrive at London Stansted Airport. We always recommend checking with your airline or a trusted third party such as IATA to get advice.

Traveling to a place near London?

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

Why use momondo?

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

momondo collates all your flight options in one place and lets you filter them to find the perfect flight from Chicago to London. momondo saves you time and could save you money on your trip.

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

Flights from Chicago to London with flexible booking policies can be found by using the search form above and then selecting our dedicated flexible booking filter, which will highlight only the flights where this policy is applied.

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

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

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

Of course. momondo tracks the price of Chicago to London flights. All you need is a valid email address and we will do the rest; it is that quick and easy.

An easier way to manage your London Stansted Airport trip

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