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Cheap flights from Chicago O'Hare Intl Airport to London from £286

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 28/3. 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
19:30 - 20:10
ORD
-
SEN
19h 40m2 stops
Multiple Airlines Logo
17:25 - 18:20
SEN
-
ORD
29h 55m2 stops
£495Multiple Airlines
Sat, 14 Mar - Sun, 22 Mar
Multiple Airlines Logo
15:35 - 12:50
ORD
-
SEN
15h 15m2 stops
Multiple Airlines Logo
07:15 - 18:25
SEN
-
ORD
17h 10m2 stops
£516Multiple Airlines
Thu, 15 Jan - Mon, 19 Jan
Multiple Airlines Logo
07:15 - 12:50
ORD
-
SEN
23h 35m2 stops
Multiple Airlines Logo
18:05 - 13:25
SEN
-
ORD
25h 20m2 stops
£538Multiple Airlines
Thu, 12 Feb - Sun, 15 Feb
Multiple Airlines Logo
19:20 - 20:10
ORD
-
SEN
18h 50m2 stops
Multiple Airlines Logo
06:40 - 17:55
SEN
-
ORD
16h 15m2 stops
£606Multiple Airlines
Sat, 7 Mar - Fri, 13 Mar
Multiple Airlines Logo
19:30 - 14:50
ORD
-
SEN
14h 20m2 stops
Multiple Airlines Logo
07:15 - 18:20
SEN
-
ORD
16h 05m2 stops
£665Multiple Airlines
Sun, 15 Mar - Sat, 21 Mar
Multiple Airlines Logo
12:50 - 10:30
ORD
-
SEN
15h 40m2 stops
Multiple Airlines Logo
18:05 - 19:55
SEN
-
ORD
31h 50m3 stops
£1,509Multiple Airlines
Sun, 28 Dec - Sun, 4 Jan
Multiple Airlines Logo
19:20 - 20:10
ORD
-
SEN
18h 50m3 stops
Multiple Airlines Logo
06:40 - 16:45
SEN
-
ORD
16h 05m2 stops
£1,928Multiple Airlines
Sat, 27 Dec - Fri, 2 Jan
Multiple Airlines Logo
19:40 - 14:50
ORD
-
SEN
13h 10m2 stops
Multiple Airlines Logo
06:40 - 20:00
SEN
-
ORD
19h 20m2 stops
£2,132Multiple Airlines
Sun, 28 Dec - Fri, 2 Jan
Multiple Airlines Logo
19:40 - 20:10
ORD
-
SEN
18h 30m2 stops
Multiple Airlines Logo
07:15 - 17:48
SEN
-
ORD
16h 33m2 stops
£2,356Multiple Airlines
Sat, 27 Dec - Sat, 3 Jan

momondo Fare Finder

 
Customise your flight search to find flights from Chicago O'Hare Intl Airport to London Southend 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 18 December 2025.
Use the filters below to find and compare flights from Chicago O'Hare Intl Airport to London Southend Airport that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

ChicagoLondon

ORD - SEN

ORDSEN

Chicago O'Hare Intl

Sat 14/3

19:30-20:10

2 stops19h 40m

London Southend

Sun 22/3

17:25-18:20

2 stops29h 55m

£495

ChicagoLondon

ORD - SEN

ORDSEN

Chicago O'Hare Intl

Thu 15/1

15:35-12:50

2 stops15h 15m

London Southend

Mon 19/1

07:15-18:25

2 stops17h 10m

£516

ChicagoLondon

ORD - SEN

ORDSEN

Chicago O'Hare Intl

Thu 12/2

07:15-12:50

2 stops23h 35m

London Southend

Sun 15/2

18:05-13:25

2 stops25h 20m

£538

ChicagoLondon

ORD - SEN

ORDSEN

Chicago O'Hare Intl

Sat 7/3

19:20-20:10

2 stops18h 50m

London Southend

Fri 13/3

06:40-17:55

2 stops16h 15m

£606

ChicagoLondon

ORD - SEN

ORDSEN

Chicago O'Hare Intl

Sun 15/3

19:30-14:50

2 stops14h 20m

London Southend

Sat 21/3

07:15-18:20

2 stops16h 05m

£665

ChicagoLondon

ORD - SEN

ORDSEN

Chicago O'Hare Intl

Sun 28/12

12:50-10:30

2 stops15h 40m

London Southend

Sun 4/1

18:05-19:55

3 stops31h 50m

£1,509

ChicagoLondon

ORD - SEN

ORDSEN

Chicago O'Hare Intl

Sat 27/12

19:20-20:10

3 stops18h 50m

London Southend

Fri 2/1

06:40-16:45

2 stops16h 05m

£1,928

ChicagoLondon

ORD - SEN

ORDSEN

Chicago O'Hare Intl

Sun 28/12

19:40-14:50

2 stops13h 10m

London Southend

Fri 2/1

06:40-20:00

2 stops19h 20m

£2,132

ChicagoLondon

ORD - SEN

ORDSEN

Chicago O'Hare Intl

Sat 27/12

19:40-20:10

2 stops18h 30m

London Southend

Sat 3/1

07:15-17:48

2 stops16h 33m

£2,356

ChicagoLondon

ORD - SEN

ORDSEN

Chicago O'Hare Intl

Sat 28/3

17:53-09:35

2 stops34h 42m

£286

Flights are sorted by cheapest return flights first.

Showing 1-10 of 19 resultsSorted by cheapest first
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When to book flights from Chicago O'Hare Intl Airport to London Southend Airport

Are you open to changing your travel dates? Check out the ideal times to fly from Chicago O'Hare Intl Airport to London Southend 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 Southend Airport (ORD to SEN) flight deals and tips

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

Fastest flight time

14h 20m

Direct flights

None
The fastest flight from Chicago O'Hare Intl Airport to London Southend Airport takes 14h 20m
There are no direct flights from Chicago O'Hare Intl Airport to London Southend Airport. There are no popular flight routes from Chicago O'Hare Intl Airport to London Southend Airport.
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  • How far is Chicago O'Hare Intl to London Southend by plane?

    Chicago O'Hare Intl and London Southend are 3979.6 mi apart from one another. Typically, this will take 14h 20m by plane in normal conditions.

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

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

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

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

    The travel and health documents required for your trip to London Southend 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 Southend Airport. We always recommend checking with your airline or a trusted third party such as IATA to get advice.

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

    Search flight deals from Chicago O'Hare Intl Airport to London Southend 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 Southend Airport with momondo?

    Leverage our AI within our “Price Forecast” tool, which predicts if it’s better to book now or wait until prices decrease. You can strategically pick the best days to fly and save money on your trip by using our “Price Calendar” tool. “Explore” shows an overview of how much it costs to fly to anywhere from a selected city or airport. Our “Discover” content is a great option for travel inspiration and money-saving tips, while “Price Alerts” will update you when prices change, so you can book when fares are right.

  • 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
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Canterbury
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Ilford
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Hounslow
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Why use momondo?

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

Finding the right flight to London from Chicago is quick and easy when you have a range of options in front of you, from reputable agents and recognisable airlines. Options that can then be filtered down to find the best fit. That is what momondo does. We make finding flights to London quick and easy, saving you time and money.

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 in the form on the page, momondo provides useful filters and insights. We can show you the cheapest days and times to fly as well as help filter your options to help you make an informed choice when booking flights to London from Chicago.

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

Price alerts on flights to London from Chicago are quick and easy to set up on momondo. Simply perform a search and select the price alert feature. It is as simple as that.

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