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Cheap flights from Chicago O'Hare Intl Airport to London from £171

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 10/11. 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 return flights

Logo
18:30 - 14:00ORD-LTN
13h 30m1 stop
Logo
07:30 - 17:20LTN-ORD
15h 50m1 stop
£376
Find Deal
Mon, 10 Nov - Wed, 19 Nov
Logo
18:30 - 14:00ORD-LTN
13h 30m1 stop
Logo
06:00 - 17:20LTN-ORD
17h 20m1 stop
£377
Find Deal
Mon, 1 Dec - Sun, 14 Dec
Logo
18:30 - 14:50ORD-LTN
14h 20m1 stop
Logo
06:30 - 17:20LTN-ORD
16h 50m1 stop
£381
Find Deal
Sun, 9 Nov - Thu, 13 Nov
Logo
19:20 - 18:15ORD-LTN
16h 55m2 stops
Logo
18:55 - 16:45LTN-ORD
27h 50m2 stops
£395
Find Deal
Wed, 5 Nov - Sat, 8 Nov
Logo
18:30 - 20:15ORD-LTN
19h 45m1 stop
Logo
07:30 - 17:20LTN-ORD
15h 50m1 stop
£398
Find Deal
Wed, 5 Nov - Wed, 12 Nov
Logo
19:15 - 21:25ORD-LTN
20h 10m2 stops
Logo
16:10 - 16:10LTN-ORD
30h 00m3 stops
£406
Find Deal
Mon, 6 Oct - Sat, 11 Oct
Logo
19:30 - 14:50ORD-LTN
14h 20m1 stop
Logo
08:00 - 17:20LTN-ORD
15h 20m1 stop
£408
Find Deal
Sun, 26 Oct - Mon, 3 Nov
Logo
19:30 - 14:25ORD-LTN
13h 55m1 stop
Logo
08:00 - 17:20LTN-ORD
15h 20m1 stop
£414
Find Deal
Tue, 28 Oct - Mon, 3 Nov
Logo
19:15 - 19:05ORD-LTN
17h 50m2 stops
Logo
19:45 - 16:10LTN-ORD
26h 25m2 stops
£415
Find Deal
Sun, 5 Oct - Wed, 15 Oct
Logo
19:20 - 18:15ORD-LTN
16h 55m2 stops
Logo
18:55 - 16:45LTN-ORD
27h 50m2 stops
£417
Find Deal
Sun, 2 Nov - Thu, 6 Nov

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 19 August 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 10/11

18:30-14:00

1 stop13h 30m

London Luton

Wed 19/11

07:30-17:20

1 stop15h 50m

£376

ChicagoLondon

ORD - LTN

ORDLTN

Chicago O'Hare Intl

Mon 1/12

18:30-14:00

1 stop13h 30m

London Luton

Sun 14/12

06:00-17:20

1 stop17h 20m

£377

ChicagoLondon

ORD - LTN

ORDLTN

Chicago O'Hare Intl

Sun 9/11

18:30-14:50

1 stop14h 20m

London Luton

Thu 13/11

06:30-17:20

1 stop16h 50m

£380

ChicagoLondon

ORD - LTN

ORDLTN

Chicago O'Hare Intl

Wed 5/11

19:20-18:15

2 stops16h 55m

London Luton

Sat 8/11

18:55-16:45

2 stops27h 50m

£395

ChicagoLondon

ORD - LTN

ORDLTN

Chicago O'Hare Intl

Wed 5/11

18:30-20:15

1 stop19h 45m

London Luton

Wed 12/11

07:30-17:20

1 stop15h 50m

£398

ChicagoLondon

ORD - LTN

ORDLTN

Chicago O'Hare Intl

Mon 6/10

19:15-21:25

2 stops20h 10m

London Luton

Sat 11/10

16:10-16:10

3 stops30h 00m

£406

ChicagoLondon

ORD - LTN

ORDLTN

Chicago O'Hare Intl

Sun 26/10

19:30-14:50

1 stop14h 20m

London Luton

Mon 3/11

08:00-17:20

1 stop15h 20m

£408

ChicagoLondon

ORD - LTN

ORDLTN

Chicago O'Hare Intl

Tue 28/10

19:30-14:25

1 stop13h 55m

London Luton

Mon 3/11

08:00-17:20

1 stop15h 20m

£414

ChicagoLondon

ORD - LTN

ORDLTN

Chicago O'Hare Intl

Sun 5/10

19:15-19:05

2 stops17h 50m

London Luton

Wed 15/10

19:45-16:10

2 stops26h 25m

£415

ChicagoLondon

ORD - LTN

ORDLTN

Chicago O'Hare Intl

Sun 2/11

19:20-18:15

2 stops16h 55m

London Luton

Thu 6/11

18:55-16:45

2 stops27h 50m

£417

Flights are sorted by cheapest return 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 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

Best price found

£171

Fastest flight time

9h 50m

Direct flights

None
The best one-way flight to London Luton Airport from Chicago O'Hare Intl Airport in the past 72 hours is £171. The best return flight deal from Chicago O'Hare Intl Airport to London Luton Airport found on momondo in the last 72 hours is £376.
The fastest flight from Chicago O'Hare Intl Airport to London Luton Airport takes 9h 50m
There are no direct flights from Chicago O'Hare Intl Airport to London Luton Airport. Popular non-direct route for this connection is Chicago O'Hare Intl Airport - 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 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 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?

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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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