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Cheap flights from Chicago O'Hare Intl Airport to London from $355

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 3/21. 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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Find the cheapest flights from Chicago O'Hare Intl Airport to London

Cheap round-trip flights

Enter your travel dates to find the best prices.
Multiple Airlines Logo
6:30 pm - 5:05 pm
ORD
-
LTN
16h 35m
2 stops
Multiple Airlines Logo
9:00 am - 5:20 pm
LTN
-
ORD
14h 20m
2 stops
$526Multiple Airlines
Wed, Feb 25 - Tue, Mar 3
Multiple Airlines Logo
7:25 pm - 10:50 pm
ORD
-
LTN
21h 25m
2 stops
Multiple Airlines Logo
6:15 am - 6:15 pm
LTN
-
ORD
18h 00m
2 stops
$528Multiple Airlines
Mon, Apr 13 - Wed, Apr 22
Multiple Airlines Logo
7:25 pm - 3:30 pm
ORD
-
LTN
14h 05m
2 stops
Multiple Airlines Logo
9:40 am - 6:15 pm
LTN
-
ORD
14h 35m
2 stops
$543Multiple Airlines
Tue, Apr 21 - Tue, Apr 28
Multiple Airlines Logo
6:30 pm - 5:05 pm
ORD
-
LTN
16h 35m
2 stops
Multiple Airlines Logo
9:00 am - 6:20 pm
LTN
-
ORD
14h 20m
2 stops
$544Multiple Airlines
Wed, Mar 4 - Thu, Mar 12
Multiple Airlines Logo
6:30 pm - 5:05 pm
ORD
-
LTN
16h 35m
2 stops
Multiple Airlines Logo
9:00 am - 6:20 pm
LTN
-
ORD
14h 20m
2 stops
$545Multiple Airlines
Wed, Mar 4 - Thu, Mar 12
Multiple Airlines Logo
3:55 pm - 11:45 am
ORD
-
LTN
13h 50m
2 stops
Multiple Airlines Logo
6:50 am - 7:25 pm
LTN
-
ORD
17h 35m
2 stops
$546Multiple Airlines
Sun, Mar 1 - Wed, Mar 11
Multiple Airlines Logo
6:30 pm - 4:15 pm
ORD
-
LTN
15h 45m
2 stops
Multiple Airlines Logo
9:00 am - 5:20 pm
LTN
-
ORD
14h 20m
2 stops
$555Multiple Airlines
Fri, Feb 27 - Thu, Mar 5
Multiple Airlines Logo
7:20 pm - 10:00 pm
ORD
-
LTN
20h 40m
2 stops
Multiple Airlines Logo
6:00 am - 4:45 pm
LTN
-
ORD
16h 45m
2 stops
$558Multiple Airlines
Sun, Mar 1 - Sat, Mar 7
Multiple Airlines Logo
7:30 pm - 8:05 pm
ORD
-
LTN
19h 35m
2 stops
Multiple Airlines Logo
9:00 am - 6:20 pm
LTN
-
ORD
14h 20m
2 stops
$561Multiple Airlines
Tue, Mar 10 - Tue, Mar 17
Multiple Airlines Logo
7:25 pm - 4:45 pm
ORD
-
LTN
15h 20m
2 stops
Multiple Airlines Logo
8:15 am - 6:15 pm
LTN
-
ORD
16h 00m
2 stops
$562Multiple Airlines
Thu, Apr 16 - Mon, Apr 20

momondo Fare Finder

 
Customize 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 832,500 searches. Data last updated January 29, 2026.
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 2/25

6:30 pm-5:05 pm

2 stops16h 35m

London Luton

Tue 3/3

9:00 am-5:20 pm

2 stops14h 20m

$526

ChicagoLondon

ORD - LTN

ORDLTN

Chicago O'Hare Intl

Mon 4/13

7:25 pm-10:50 pm

2 stops21h 25m

London Luton

Wed 4/22

6:15 am-6:15 pm

2 stops18h 00m

$528

ChicagoLondon

ORD - LTN

ORDLTN

Chicago O'Hare Intl

Tue 4/21

7:25 pm-3:30 pm

2 stops14h 05m

London Luton

Tue 4/28

9:40 am-6:15 pm

2 stops14h 35m

$543

ChicagoLondon

ORD - LTN

ORDLTN

Chicago O'Hare Intl

Wed 3/4

6:30 pm-5:05 pm

2 stops16h 35m

London Luton

Thu 3/12

9:00 am-6:20 pm

2 stops14h 20m

$544

ChicagoLondon

ORD - LTN

ORDLTN

Chicago O'Hare Intl

Wed 3/4

6:30 pm-5:05 pm

2 stops16h 35m

London Luton

Thu 3/12

9:00 am-6:20 pm

2 stops14h 20m

$545

ChicagoLondon

ORD - LTN

ORDLTN

Chicago O'Hare Intl

Sun 3/1

3:55 pm-11:45 am

2 stops13h 50m

London Luton

Wed 3/11

6:50 am-7:25 pm

2 stops17h 35m

$546

ChicagoLondon

ORD - LTN

ORDLTN

Chicago O'Hare Intl

Fri 2/27

6:30 pm-4:15 pm

2 stops15h 45m

London Luton

Thu 3/5

9:00 am-5:20 pm

2 stops14h 20m

$555

ChicagoLondon

ORD - LTN

ORDLTN

Chicago O'Hare Intl

Sun 3/1

7:20 pm-10:00 pm

2 stops20h 40m

London Luton

Sat 3/7

6:00 am-4:45 pm

2 stops16h 45m

$558

ChicagoLondon

ORD - LTN

ORDLTN

Chicago O'Hare Intl

Tue 3/10

7:30 pm-8:05 pm

2 stops19h 35m

London Luton

Tue 3/17

9:00 am-6:20 pm

2 stops14h 20m

$561

ChicagoLondon

ORD - LTN

ORDLTN

Chicago O'Hare Intl

Thu 4/16

7:25 pm-4:45 pm

2 stops15h 20m

London Luton

Mon 4/20

8:15 am-6:15 pm

2 stops16h 00m

$562

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first
1
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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 round-trip 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 20m

Direct flights

None
The fastest flight from Chicago O'Hare Intl Airport to London Luton Airport takes 11h 20m
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.
Search flight deals

  • How far is Chicago O'Hare Intl to London Luton by plane?

    Chicago O'Hare Intl and London Luton are 3929.6 mi apart from one another. In terms of flight time, this usually takes a little over 11h 20m.

  • 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 are updated daily.

  • 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 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 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?

    Confirm your travel details to search for the latest offers for flights from Chicago O'Hare Intl Airport to London Luton Airport. While browsing offers there will be the option to toggle “Price Alerts”. You’ll then receive updates when prices for the flight route increase or decrease.

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

    Plan your trips smart with the “Price Forecast” feature, which uses flight data to help you pick the best days to fly for the lowest fares. Our “Price Calendar” helps you get the most for your money by showing you when it’s most advantageous to fly. Curate your own travel experiences for less with “Explore”. Expert travel hacks to fuel your next adventure are a click away with “Discover” by momondo. Set up our “Price Alerts” to track fare changes and book when prices are at their lowest point.

  • How does momondo find its flight prices?

    We compare prices from 700+ competitors to help you find the price that works best for you. momondo operates in over 30 international markets, bringing you access to a wide range of fares and deals. Search for your travel using momondo for a diverse range of options from airlines and OTAs.

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
Guildford
Crawley
Wembley
Dartford
Hayes
Brentwood
Harrow
Watford
Cobham
Folkestone
Romford
Stansted
Croydon
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?

Yes. momondo enables you to select and highlight flights to London from Chicago with this policy.

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

Once you have performed a search for Chicago to London flights, momondo helps you find the right one by offering useful filters to narrow down your flight selection. Flights can be filtered by multiple factors such as airline, airport and price; but also by other criteria like aircraft type and payment method.

I’m not ready to book a flight from Chicago 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 Chicago and alert you when they change.

An easier way to manage your London Luton Airport trip

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