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Cheap flights from Chicago O'Hare Intl Airport to London from $231

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 11/10. 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 (ORD-LTN)

Cheap round-trip flights

Logo
6:30 pm - 2:00 pmORD-LTN
13h 30m1 stop
Logo
7:30 am - 5:20 pmLTN-ORD
15h 50m1 stop
$509
Find Deal
Mon, Nov 10 - Wed, Nov 19
Logo
7:20 pm - 6:15 pmORD-LTN
16h 55m2 stops
Logo
2:35 pm - 4:45 pmLTN-ORD
32h 10m2 stops
$513
Find Deal
Mon, Nov 3 - Fri, Nov 7
Logo
8:20 pm - 6:15 pmORD-LTN
16h 55m2 stops
Logo
2:35 pm - 4:45 pmLTN-ORD
32h 10m2 stops
$515
Find Deal
Mon, Oct 27 - Sun, Nov 9
Logo
7:20 pm - 6:15 pmORD-LTN
16h 55m2 stops
Logo
6:55 pm - 4:45 pmLTN-ORD
27h 50m2 stops
$539
Find Deal
Thu, Nov 6 - Thu, Nov 13
Logo
7:30 pm - 2:50 pmORD-LTN
14h 20m1 stop
Logo
8:00 am - 5:20 pmLTN-ORD
15h 20m1 stop
$544
Find Deal
Sun, Oct 26 - Mon, Nov 3
Logo
7:15 pm - 9:25 pmORD-LTN
20h 10m2 stops
Logo
4:10 pm - 4:10 pmLTN-ORD
30h 00m3 stops
$550
Find Deal
Mon, Oct 6 - Sat, Oct 11
Logo
7:30 pm - 8:15 pmORD-LTN
19h 45m1 stop
Logo
8:00 am - 5:20 pmLTN-ORD
15h 20m1 stop
$551
Find Deal
Wed, Oct 29 - Mon, Nov 3
Logo
7:20 pm - 6:15 pmORD-LTN
16h 55m2 stops
Logo
2:35 pm - 4:45 pmLTN-ORD
32h 10m2 stops
$552
Find Deal
Sun, Nov 2 - Fri, Nov 7
Logo
7:20 pm - 6:15 pmORD-LTN
16h 55m2 stops
Logo
2:35 pm - 4:45 pmLTN-ORD
32h 10m3 stops
$553
Find Deal
Mon, Nov 3 - Fri, Nov 7
Logo
7:15 pm - 7:05 pmORD-LTN
17h 50m2 stops
Logo
2:35 pm - 4:45 pmLTN-ORD
32h 10m2 stops
$559
Find Deal
Mon, Oct 20 - Sun, Nov 2

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 August 20, 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

Mon 11/10

6:30 pm-2:00 pm

1 stop13h 30m

London Luton

Wed 11/19

7:30 am-5:20 pm

1 stop15h 50m

$509

ChicagoLondon

ORD - LTN

ORDLTN

Chicago O'Hare Intl

Mon 11/3

7:20 pm-6:15 pm

2 stops16h 55m

London Luton

Fri 11/7

2:35 pm-4:45 pm

2 stops32h 10m

$513

ChicagoLondon

ORD - LTN

ORDLTN

Chicago O'Hare Intl

Mon 10/27

8:20 pm-6:15 pm

2 stops16h 55m

London Luton

Sun 11/9

2:35 pm-4:45 pm

2 stops32h 10m

$515

ChicagoLondon

ORD - LTN

ORDLTN

Chicago O'Hare Intl

Thu 11/6

7:20 pm-6:15 pm

2 stops16h 55m

London Luton

Thu 11/13

6:55 pm-4:45 pm

2 stops27h 50m

$539

ChicagoLondon

ORD - LTN

ORDLTN

Chicago O'Hare Intl

Sun 10/26

7:30 pm-2:50 pm

1 stop14h 20m

London Luton

Mon 11/3

8:00 am-5:20 pm

1 stop15h 20m

$544

ChicagoLondon

ORD - LTN

ORDLTN

Chicago O'Hare Intl

Mon 10/6

7:15 pm-9:25 pm

2 stops20h 10m

London Luton

Sat 10/11

4:10 pm-4:10 pm

3 stops30h 00m

$550

ChicagoLondon

ORD - LTN

ORDLTN

Chicago O'Hare Intl

Wed 10/29

7:30 pm-8:15 pm

1 stop19h 45m

London Luton

Mon 11/3

8:00 am-5:20 pm

1 stop15h 20m

$551

ChicagoLondon

ORD - LTN

ORDLTN

Chicago O'Hare Intl

Sun 11/2

7:20 pm-6:15 pm

2 stops16h 55m

London Luton

Fri 11/7

2:35 pm-4:45 pm

2 stops32h 10m

$552

ChicagoLondon

ORD - LTN

ORDLTN

Chicago O'Hare Intl

Mon 11/3

7:20 pm-6:15 pm

2 stops16h 55m

London Luton

Fri 11/7

2:35 pm-4:45 pm

3 stops32h 10m

$553

ChicagoLondon

ORD - LTN

ORDLTN

Chicago O'Hare Intl

Mon 10/20

7:15 pm-7:05 pm

2 stops17h 50m

London Luton

Sun 11/2

2:35 pm-4:45 pm

2 stops32h 10m

$559

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first
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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

Direct flights

None
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?

    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 9h 50m.

  • 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
Hounslow
Gatwick
Luton
Dover
Slough
Milton Keynes
Guildford
Dartford
Crawley
Hayes
Chelmsford
Stansted
Brentwood
Ilford
Folkestone
Colchester
Watford
Richmond
Canterbury
Croydon

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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