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Cheap flights from Chicago to London from £253

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 to London departing on 25/8. 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 to London

Cheap return flights

Enter your travel dates to find the best prices.
Aer Lingus Logo
15:45 - 08:40
ORD
-
SOU
10h 55m
1 stop
Aer Lingus Logo
09:20 - 19:15
SOU
-
ORD
15h 55m
1 stop
£635Aer Lingus
Wed, 19 Aug - Wed, 26 Aug
Aer Lingus Logo
15:45 - 08:40
ORD
-
SOU
10h 55m
1 stop
Aer Lingus Logo
09:20 - 19:15
SOU
-
ORD
15h 55m
1 stop
£636Aer Lingus
Wed, 19 Aug - Wed, 26 Aug
Aer Lingus Logo
15:45 - 08:40
ORD
-
SOU
10h 55m
1 stop
Aer Lingus Logo
09:20 - 18:25
SOU
-
ORD
15h 05m
1 stop
£670Aer Lingus
Wed, 21 Oct - Mon, 23 Nov
Multiple Airlines Logo
15:45 - 08:40
ORD
-
SOU
10h 55m
1 stop
Multiple Airlines Logo
19:25 - 15:30
SOU
-
ORD
50h 05m
2 stops
£673Multiple Airlines
Wed, 21 Oct - Mon, 23 Nov
Multiple Airlines Logo
15:55 - 08:40
ORD
-
SOU
10h 45m
1 stop
Multiple Airlines Logo
19:30 - 14:55
SOU
-
ORD
25h 25m
2 stops
£679Multiple Airlines
Sat, 7 Nov - Sun, 15 Nov
Aer Lingus Logo
21:00 - 19:30
ORD
-
SOU
16h 30m
1 stop
Aer Lingus Logo
09:20 - 19:15
SOU
-
ORD
15h 55m
1 stop
£681Aer Lingus
Thu, 27 Aug - Thu, 3 Sep
KLM Logo
13:28 - 08:35
MDW
-
SOU
13h 07m
2 stops
KLM Logo
08:40 - 22:10
SOU
-
MDW
19h 30m
2 stops
£797KLM
Wed, 21 Oct - Mon, 23 Nov
KLM Logo
12:46 - 08:45
MDW
-
SOU
13h 59m
2 stops
KLM Logo
09:15 - 22:36
SOU
-
MDW
19h 21m
2 stops
£800KLM
Wed, 19 Aug - Wed, 26 Aug
Delta Logo
13:25 - 08:45
MDW
-
SOU
13h 20m
2 stops
Delta Logo
09:15 - 18:01
SOU
-
MDW
14h 46m
2 stops
£837Delta
Thu, 27 Aug - Wed, 2 Sep
Delta Logo
17:10 - 17:00
MDW
-
SOU
17h 50m
2 stops
Delta Logo
09:05 - 18:01
SOU
-
MDW
14h 56m
2 stops
£1,121Delta
Fri, 28 Aug - Fri, 4 Sep

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Delta flights from Chicago to Southampton

Our best Delta deals on Chicago to Southampton flight tickets
Delta
12 Aug
ORD16:50Chicago O'Hare Intl
18h 45m
1 stop
SOU17:35Southampton Eastleigh
26 Aug
SOU18:05Southampton Eastleigh
26h 10m
1 stop
ORD14:15Chicago O'Hare Intl
£789
Delta
12 Aug
ORD12:29Chicago O'Hare Intl
14h 16m
2 stops
SOU08:45Southampton Eastleigh
25 Aug
SOU18:05Southampton Eastleigh
26h 25m
1 stop
ORD14:30Chicago O'Hare Intl
£792
Delta
1 Sept
ORD06:59Chicago O'Hare Intl
27h 51m
2 stops
SOU16:50Southampton Eastleigh
7 Sept
SOU17:20Southampton Eastleigh
26h 55m
1 stop
ORD14:15Chicago O'Hare Intl
£793

Aer Lingus flights from Chicago to Southampton

Our best Aer Lingus deals on Chicago to Southampton flight tickets
Aer Lingus
19 Aug
ORD15:45Chicago O'Hare Intl
10h 55m
1 stop
SOU08:40Southampton Eastleigh
26 Aug
SOU09:20Southampton Eastleigh
15h 55m
1 stop
ORD19:15Chicago O'Hare Intl
£635
Aer Lingus
19 Aug
ORD15:45Chicago O'Hare Intl
10h 55m
1 stop
SOU08:40Southampton Eastleigh
26 Aug
SOU09:20Southampton Eastleigh
15h 55m
1 stop
ORD19:15Chicago O'Hare Intl
£636
Aer Lingus
21 Oct
ORD15:45Chicago O'Hare Intl
10h 55m
1 stop
SOU08:40Southampton Eastleigh
23 Nov
SOU09:20Southampton Eastleigh
15h 05m
1 stop
ORD18:25Chicago O'Hare Intl
£670

momondo Fare Finder

 
Customise your flight search to find flights from Chicago to Southampton 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 17 July 2026.
Use the filters below to find and compare flights from Chicago to Southampton that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest return flight

ChicagoSouthampton

ORD - SOU

ORDSOU

Chicago O'Hare Intl

Wed 19/8

15:45-08:40

1 stop10h 55m

Southampton Eastleigh

Wed 26/8

09:20-19:15

1 stop15h 55m

£635

ChicagoSouthampton

ORD - SOU

ORDSOU

Chicago O'Hare Intl

Wed 19/8

15:45-08:40

1 stop10h 55m

Southampton Eastleigh

Wed 26/8

09:20-19:15

1 stop15h 55m

£636
Fastest return journey

ChicagoSouthampton

ORD - SOU

ORDSOU

Chicago O'Hare Intl

Wed 21/10

15:45-08:40

1 stop10h 55m

Southampton Eastleigh

Mon 23/11

09:20-18:25

1 stop15h 05m

£670

ChicagoSouthampton

ORD - SOU

ORDSOU

Chicago O'Hare Intl

Wed 21/10

15:45-08:40

1 stop10h 55m

Southampton Eastleigh

Mon 23/11

19:25-15:30

2 stops50h 05m

£673

ChicagoSouthampton

ORD - SOU

ORDSOU

Chicago O'Hare Intl

Sat 7/11

15:55-08:40

1 stop10h 45m

Southampton Eastleigh

Sun 15/11

19:30-14:55

2 stops25h 25m

£679

ChicagoSouthampton

ORD - SOU

ORDSOU

Chicago O'Hare Intl

Thu 27/8

21:00-19:30

1 stop16h 30m

Southampton Eastleigh

Thu 3/9

09:20-19:15

1 stop15h 55m

£681

ChicagoSouthampton

MDW - SOU

MDWSOU

Chicago Midway

Wed 21/10

13:28-08:35

2 stops13h 07m

Southampton Eastleigh

Mon 23/11

08:40-22:10

2 stops19h 30m

£797

ChicagoSouthampton

MDW - SOU

MDWSOU

Chicago Midway

Wed 19/8

12:46-08:45

2 stops13h 59m

Southampton Eastleigh

Wed 26/8

09:15-22:36

2 stops19h 21m

£800

ChicagoSouthampton

MDW - SOU

MDWSOU

Chicago Midway

Thu 27/8

13:25-08:45

2 stops13h 20m

Southampton Eastleigh

Wed 2/9

09:15-18:01

2 stops14h 46m

£837

ChicagoSouthampton

MDW - SOU

MDWSOU

Chicago Midway

Fri 28/8

17:10-17:00

2 stops17h 50m

Southampton Eastleigh

Fri 4/9

09:05-18:01

2 stops14h 56m

£1,121

Flights are sorted by cheapest return flights first.

Showing 1-10 of 20 resultsSorted by cheapest first
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See travel insights to London from

How to get the cheapest flight ticket from Chicago to Southampton

Look no further. We've gone through all the searches for this route on momondo so you have the important information and insights to find the cheapest flight ticket for your trip

What is the cheapest airline that flies from Chicago to Southampton Eastleigh?

Delta and KLM are the most popular carriers operating from Chicago to Southampton Eastleigh

Which airlines fly to Southampton?

British Airways, Aer Lingus and United Airlines are the top three most popular airlines that fly to Southampton from Chicago according to our data. British Airways is the first choice among our users, with 43% of people opting to fly with this airline when travelling to Southampton. Keep in mind that there are 7 different airlines that fly to Southampton on a routine basis, so you have a few additional options to choose from.

When to book flights from Chicago to Southampton

Are you open to changing your travel dates? Check out the ideal times to fly from Chicago to Southampton according to our flight data. Find out which month and days have the cheapest flights.
Estimated return price

Cheap Chicago to Southampton (CHI to SOU) flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from Chicago to Southampton

Fastest flight time

10h 20m

Direct flights

None
The fastest flight from Chicago to Southampton takes 10h 20m
There are no direct flights from Chicago to Southampton. There are no popular flight routes from Chicago to Southampton.
Search flight deals

Frequently asked questions about flying from Chicago to Southampton

  • How far is Chicago to Southampton Eastleigh by plane?

    Chicago and Southampton Eastleigh are 3914.9 mi apart from one another. A reasonable flight in good conditions will take 10h 20m.

  • When did momondo last update prices for flights from Chicago to Southampton Eastleigh Airport?

    Prices for flights from Chicago to Southampton Eastleigh Airport refresh daily.

  • How old do you have to be to fly from Chicago to Southampton Eastleigh 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 to Southampton Eastleigh Airport.

  • What documentation or ID do you need to fly to Southampton Eastleigh Airport?

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

Travelling to a place near London?

Book flights to London if you plan to visit one of these locations
Portsmouth

Why use momondo?

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

momondo collates all your flight options in one place and lets you filter them to find the perfect flight from Chicago to Southampton. momondo saves you time and could save you money on your trip.

Can I find flights from Chicago to Southampton with flexible booking policies on momondo?

Flights from Chicago to Southampton 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 Southampton?

momondo helps you find the best flight between Chicago and Southampton by providing filters to narrow your choice of flights to those matching your criteria. You can select flights based on numerous factors such as price, departure and landing times, airport and airline.

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

Yes. momondo can track prices for Chicago to Southampton flights and alert you when they change. Perform a search to set up the price alert. All that is required is a valid email address.

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