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Cheap flights from Chicago O'Hare Intl Airport to London from $376

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 5/6. 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
1 adult, Economy, 0 bags

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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
8:10 pm - 10:25 pm
ORD
-
SEN
20h 15m
2 stops
Multiple Airlines Logo
7:00 am - 9:40 am
SEN
-
ORD
32h 40m
2 stops
$1,083Multiple Airlines
Thu, Apr 2 - Mon, Apr 6
Multiple Airlines Logo
11:25 am - 7:35 pm
ORD
-
SEN
26h 10m
2 stops
Multiple Airlines Logo
5:10 pm - 9:40 am
SEN
-
ORD
22h 30m
2 stops
$1,094Multiple Airlines
Sun, Apr 5 - Sun, Apr 12
Multiple Airlines Logo
3:40 pm - 1:00 pm
ORD
-
SEN
15h 20m
2 stops
Multiple Airlines Logo
11:10 am - 9:25 pm
SEN
-
ORD
16h 15m
2 stops
$1,264Multiple Airlines
Wed, May 13 - Mon, May 18
Multiple Airlines Logo
3:40 pm - 1:00 pm
ORD
-
SEN
15h 20m
2 stops
Multiple Airlines Logo
11:10 am - 9:25 pm
SEN
-
ORD
16h 15m
2 stops
$1,269Multiple Airlines
Wed, May 13 - Mon, May 18
Multiple Airlines Logo
2:00 pm - 10:30 am
ORD
-
SEN
14h 30m
2 stops
Multiple Airlines Logo
7:25 am - 6:15 pm
SEN
-
ORD
16h 50m
2 stops
$1,322Multiple Airlines
Sun, Apr 19 - Sun, May 10
Multiple Airlines Logo
5:10 pm - 10:45 am
ORD
-
SEN
11h 35m
1 stop
Multiple Airlines Logo
7:25 am - 3:10 pm
SEN
-
ORD
13h 45m
1 stop
$2,004Multiple Airlines
Thu, Apr 2 - Sun, Apr 5

momondo Fare Finder

 
Customize 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 832,500 searches. Data last updated March 20, 2026.
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

Cheapest round-trip

ChicagoLondon

ORD - SEN

ORDSEN

Chicago O'Hare Intl

Thu 4/2

8:10 pm-10:25 pm

2 stops20h 15m

London Southend

Mon 4/6

7:00 am-9:40 am

2 stops32h 40m

$1,083

ChicagoLondon

ORD - SEN

ORDSEN

Chicago O'Hare Intl

Sun 4/5

11:25 am-7:35 pm

2 stops26h 10m

London Southend

Sun 4/12

5:10 pm-9:40 am

2 stops22h 30m

$1,094

ChicagoLondon

ORD - SEN

ORDSEN

Chicago O'Hare Intl

Wed 5/13

3:40 pm-1:00 pm

2 stops15h 20m

London Southend

Mon 5/18

11:10 am-9:25 pm

2 stops16h 15m

$1,264

ChicagoLondon

ORD - SEN

ORDSEN

Chicago O'Hare Intl

Wed 5/13

3:40 pm-1:00 pm

2 stops15h 20m

London Southend

Mon 5/18

11:10 am-9:25 pm

2 stops16h 15m

$1,269

ChicagoLondon

ORD - SEN

ORDSEN

Chicago O'Hare Intl

Sun 4/19

2:00 pm-10:30 am

2 stops14h 30m

London Southend

Sun 5/10

7:25 am-6:15 pm

2 stops16h 50m

$1,322
Quickest round-trip

ChicagoLondon

ORD - SEN

ORDSEN

Chicago O'Hare Intl

Thu 4/2

5:10 pm-10:45 am

1 stop11h 35m

London Southend

Sun 4/5

7:25 am-3:10 pm

1 stop13h 45m

$2,004
Cheapest one-way
Quickest one-way

ChicagoLondon

ORD - SEN

ORDSEN

Chicago O'Hare Intl

Wed 5/6

7:25 pm-9:25 pm

2 stops20h 00m

$376

ChicagoLondon

ORD - SEN

ORDSEN

Chicago O'Hare Intl

Wed 4/8

7:25 pm-12:15 pm

3 stops34h 50m

$382

ChicagoLondon

ORD - SEN

ORDSEN

Chicago O'Hare Intl

Wed 4/8

7:25 pm-12:15 pm

3 stops34h 50m

$383

ChicagoLondon

ORD - SEN

ORDSEN

Chicago O'Hare Intl

Wed 4/8

7:25 pm-12:15 pm

3 stops34h 50m

$386

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 16 resultsSorted by cheapest first
1
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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 round-trip 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

11h 35m

Direct flights

None
The fastest flight from Chicago O'Hare Intl Airport to London Southend Airport takes 11h 35m
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?

    London Southend is 3979.6 mi away from Chicago O'Hare Intl. Typically, this will take 11h 35m 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 refresh daily.

  • 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 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 Southend Airport.

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

    The required travel and health documents for your London Southend Airport trip may vary depending on your itinerary and personal circumstances. As a general rule, you should carry multiple documents, including a national ID card or driver's license and a passport valid for six months after your intended arrival at London Southend Airport. We recommend that you seek guidance from your airline or a reliable third party such as IATA.

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

    Confirm your travel details to search for the latest offers for flights from Chicago O'Hare Intl Airport to London Southend 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 Southend 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 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.

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

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?

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 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?

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.

An easier way to manage your London Southend Airport trip

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