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Cheap flights from Chicago O'Hare Intl Airport to London from £283

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 O'Hare Intl Airport to London departing on 9/1. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
1 adult
0 bags
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Find the cheapest flights from Chicago O'Hare Intl Airport to London

Cheap return flights

Enter your travel dates to find the best prices.
Multiple Airlines Logo
18:30 - 12:55
ORD
-
LTN
12h 25m1 stop
Multiple Airlines Logo
08:00 - 17:20
LTN
-
ORD
15h 20m1 stop
£417Multiple Airlines
Wed, 21 Jan - Wed, 28 Jan
Multiple Airlines Logo
20:50 - 13:25
ORD
-
LTN
10h 35m1 stop
Multiple Airlines Logo
08:05 - 14:00
LTN
-
ORD
11h 55m1 stop
£418Multiple Airlines
Tue, 21 Apr - Tue, 28 Apr
Multiple Airlines Logo
10:24 - 16:05
ORD
-
LTN
23h 41m3 stops
Multiple Airlines Logo
06:00 - 16:45
LTN
-
ORD
16h 45m2 stops
£419Multiple Airlines
Sat, 17 Jan - Sat, 24 Jan
Multiple Airlines Logo
15:45 - 07:40
ORD
-
LTN
9h 55m1 stop
Multiple Airlines Logo
13:00 - 19:00
LTN
-
ORD
12h 00m1 stop
£420Multiple Airlines
Mon, 30 Mar - Thu, 9 Apr
Multiple Airlines Logo
18:30 - 14:50
ORD
-
LTN
14h 20m1 stop
Multiple Airlines Logo
07:00 - 17:20
LTN
-
ORD
16h 20m1 stop
£421Multiple Airlines
Tue, 27 Jan - Tue, 3 Feb
Multiple Airlines Logo
19:20 - 22:10
ORD
-
LTN
20h 50m2 stops
Multiple Airlines Logo
20:50 - 16:45
LTN
-
ORD
25h 55m2 stops
£423Multiple Airlines
Thu, 15 Jan - Thu, 22 Jan
Multiple Airlines Logo
19:30 - 20:05
ORD
-
LTN
19h 35m2 stops
Multiple Airlines Logo
09:00 - 18:20
LTN
-
ORD
14h 20m2 stops
£423Multiple Airlines
Tue, 10 Mar - Thu, 26 Mar
Multiple Airlines Logo
10:29 - 18:15
ORD
-
LTN
25h 46m3 stops
Multiple Airlines Logo
19:35 - 16:45
LTN
-
ORD
27h 10m2 stops
£425Multiple Airlines
Fri, 23 Jan - Sun, 1 Feb
Multiple Airlines Logo
18:30 - 12:55
ORD
-
LTN
12h 25m1 stop
Multiple Airlines Logo
07:00 - 17:20
LTN
-
ORD
16h 20m1 stop
£426Multiple Airlines
Wed, 25 Feb - Tue, 3 Mar
Multiple Airlines Logo
19:20 - 20:15
ORD
-
LTN
18h 55m3 stops
Multiple Airlines Logo
21:00 - 16:45
LTN
-
ORD
25h 45m2 stops
£427Multiple Airlines
Sat, 14 Feb - Sat, 28 Feb

momondo Fare Finder

 
Customise your flight search to find flights from Chicago O'Hare Intl Airport 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 279,928 searches. Data last updated 5 December 2025.
Use the filters below to find and compare flights from Chicago O'Hare Intl Airport to London Luton Airport that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

ChicagoLondon

ORD - LTN

ORDLTN

Chicago O'Hare Intl

Wed 21/1

18:30-12:55

1 stop12h 25m

London Luton

Wed 28/1

08:00-17:20

1 stop15h 20m

£417

ChicagoLondon

ORD - LTN

ORDLTN

Chicago O'Hare Intl

Tue 21/4

20:50-13:25

1 stop10h 35m

London Luton

Tue 28/4

08:05-14:00

1 stop11h 55m

£418

ChicagoLondon

ORD - LTN

ORDLTN

Chicago O'Hare Intl

Sat 17/1

10:24-16:05

3 stops23h 41m

London Luton

Sat 24/1

06:00-16:45

2 stops16h 45m

£419

ChicagoLondon

ORD - LTN

ORDLTN

Chicago O'Hare Intl

Mon 30/3

15:45-07:40

1 stop9h 55m

London Luton

Thu 9/4

13:00-19:00

1 stop12h 00m

£420

ChicagoLondon

ORD - LTN

ORDLTN

Chicago O'Hare Intl

Tue 27/1

18:30-14:50

1 stop14h 20m

London Luton

Tue 3/2

07:00-17:20

1 stop16h 20m

£421

ChicagoLondon

ORD - LTN

ORDLTN

Chicago O'Hare Intl

Thu 15/1

19:20-22:10

2 stops20h 50m

London Luton

Thu 22/1

20:50-16:45

2 stops25h 55m

£423

ChicagoLondon

ORD - LTN

ORDLTN

Chicago O'Hare Intl

Tue 10/3

19:30-20:05

2 stops19h 35m

London Luton

Thu 26/3

09:00-18:20

2 stops14h 20m

£423

ChicagoLondon

ORD - LTN

ORDLTN

Chicago O'Hare Intl

Fri 23/1

10:29-18:15

3 stops25h 46m

London Luton

Sun 1/2

19:35-16:45

2 stops27h 10m

£425

ChicagoLondon

ORD - LTN

ORDLTN

Chicago O'Hare Intl

Wed 25/2

18:30-12:55

1 stop12h 25m

London Luton

Tue 3/3

07:00-17:20

1 stop16h 20m

£426

ChicagoLondon

ORD - LTN

ORDLTN

Chicago O'Hare Intl

Sat 14/2

19:20-20:15

3 stops18h 55m

London Luton

Sat 28/2

21:00-16:45

2 stops25h 45m

£427

Flights are sorted by cheapest return flights first.

Showing 1-10 of 20 resultsSorted by cheapest first
1
2

When to book flights from Chicago O'Hare Intl Airport to London Luton Airport

Are you open to changing your travel dates? Check out the ideal times to fly from Chicago O'Hare Intl Airport to London Luton Airport according to our flight data. Find out which month and days have the cheapest flights.
Estimated return price

Cheap Chicago O'Hare Intl Airport to London Luton Airport (ORD to LTN) flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from Chicago O'Hare Intl Airport to London Luton Airport

Fastest flight time

11h 30m

Direct flights

None
The fastest flight from Chicago O'Hare Intl Airport to London Luton Airport takes 11h 30m
There are no direct flights from Chicago O'Hare Intl Airport to London Luton Airport. There are no popular flight routes from Chicago O'Hare Intl Airport to London Luton Airport.
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  • How far is Chicago O'Hare Intl to London Luton by plane?

    There are 3929.6 mi between Chicago O'Hare Intl and London Luton. In terms of flight time, this usually takes a little over 10h 05m.

  • When did momondo last update prices for flights from Chicago O'Hare Intl Airport to London Luton Airport?

    Prices for flights from Chicago O'Hare Intl Airport to London Luton Airport were last updated today.

  • How old do you have to be to fly from Chicago O'Hare Intl Airport to London Luton Airport?

    The minimum age for a child to fly alone is five, but airlines that offer an unaccompanied minor (UNMR) service may have their own age limitations. Flight duration, scheduling, and layovers are among the considerations that may influence age limits. We recommend that you double-check with the airline you are booking with for travel from Chicago O'Hare Intl Airport to London Luton Airport.

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

    The travel and health documents you'll need for your trip to London Luton Airport may differ based on your itinerary and personal situation. Typically, you should have several documents on hand, such as a national ID card or driver's license and a passport that is valid for six months after your intended arrival at London Luton Airport. It is always advisable to seek advice from your airline or a trusted third party, such as IATA.

  • How do I get Price Alerts for flights from Chicago O'Hare Intl Airport to London Luton Airport?

    Search flight deals from Chicago O'Hare Intl Airport to London Luton Airport. While viewing offers you’ll have the option to create a Price Alert.

  • How can I save money on flights from Chicago O'Hare Intl Airport to London Luton Airport with momondo?

    By using tools like our “Price Calendar”, you can see the best days for return flights on your travels. Our “Price Forecast” tool uses AI to predict whether you should purchase or hold off on booking for potentially cheaper prices. Explore shows you all flight options from a city or airport to build your own unique adventure. The Discover blog also provides valuable insights for saving money while booking your experience. After searching you can toggle on “Price Alerts” to track prices for your desired flight and book at the ideal moment.

  • How does momondo find its flight prices?

    We show prices from over 700+ competitors with a single click. With options from airlines and OTAs from across our 30 international markets, we are able to show you a diverse range of deals to create your adventure.

Travelling to a place near London?

Book flights to London if you plan to visit one of these locations
Eastbourne
Milton Keynes
Luton
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Maidstone
Slough
Canterbury
Southend-on-Sea
Ipswich
Ilford
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Worthing
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Ramsgate
Hounslow
Stansted

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?

Once all potential Chicago to London flight options are in front of you, momondo lets you sort and filter flights based on preferences such as airline, price and flight times amongst many other options.

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

Yes momondo offers price alerts on flights to London from Chicago. 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.

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