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Cheap flights from Chicago to London from £260

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 25/5. 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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Cheap return flights

Enter your travel dates to find the best prices.
Delta Logo
17:25 - 17:00
ORD
-
SOU
18h 35m
1 stop
Delta Logo
17:35 - 15:20
SOU
-
ORD
26h 45m
1 stop
£579Delta
Mon, 9 Mar - Tue, 17 Mar
Delta Logo
17:25 - 08:20
ORD
-
SOU
9h 55m
1 stop
Delta Logo
08:50 - 15:20
SOU
-
ORD
11h 30m
1 stop
£580Delta
Mon, 16 Mar - Wed, 25 Mar
Delta Logo
07:10 - 08:20
ORD
-
SOU
20h 10m
2 stops
Delta Logo
17:35 - 15:20
SOU
-
ORD
26h 45m
1 stop
£583Delta
Tue, 10 Mar - Tue, 17 Mar
Delta Logo
16:20 - 08:35
ORD
-
SOU
10h 15m
1 stop
Delta Logo
09:05 - 14:15
SOU
-
ORD
11h 10m
1 stop
£583Delta
Sun, 5 Apr - Tue, 21 Apr
Delta Logo
17:25 - 08:20
ORD
-
SOU
9h 55m
1 stop
Delta Logo
08:50 - 20:17
SOU
-
ORD
16h 27m
2 stops
£586Delta
Mon, 9 Mar - Thu, 19 Mar
Delta Logo
09:30 - 16:50
MDW
-
SOU
25h 20m
2 stops
Delta Logo
17:20 - 16:26
SOU
-
MDW
29h 06m
2 stops
£587Delta
Sun, 5 Apr - Tue, 21 Apr
Delta Logo
10:40 - 08:35
ORD
-
SOU
15h 55m
2 stops
Delta Logo
09:05 - 18:13
SOU
-
ORD
15h 08m
2 stops
£587Delta
Sun, 5 Apr - Tue, 21 Apr
Delta Logo
05:30 - 08:20
ORD
-
SOU
21h 50m
2 stops
Delta Logo
08:50 - 20:17
SOU
-
ORD
16h 27m
2 stops
£590Delta
Wed, 11 Mar - Thu, 19 Mar
KLM Logo
13:10 - 08:35
MDW
-
SOU
13h 25m
2 stops
KLM Logo
09:05 - 18:36
SOU
-
MDW
15h 31m
2 stops
£654KLM
Sun, 5 Apr - Tue, 21 Apr
KLM Logo
19:16 - 16:50
MDW
-
SOU
15h 34m
2 stops
KLM Logo
09:05 - 18:36
SOU
-
MDW
15h 31m
2 stops
£961KLM
Mon, 13 Apr - Mon, 20 Apr

KLM flights from Chicago to Southampton

Our best KLM deals on Chicago to Southampton flight tickets
KLM
10 Apr
ORD16:20Chicago O'Hare Intl
10h 25m
1 stop
SOU08:45Southampton Eastleigh
17 Apr
SOU17:20Southampton Eastleigh
26h 55m
1 stop
ORD14:15Chicago O'Hare Intl
£657
KLM
10 Apr
ORD16:20Chicago O'Hare Intl
10h 25m
1 stop
SOU08:45Southampton Eastleigh
17 Apr
SOU09:05Southampton Eastleigh
17h 35m
2 stops
ORD20:40Chicago O'Hare Intl
£707
KLM
15 May
ORD16:20Chicago O'Hare Intl
10h 25m
1 stop
SOU08:45Southampton Eastleigh
29 May
SOU09:05Southampton Eastleigh
11h 10m
1 stop
ORD14:15Chicago O'Hare Intl
£725

Aer Lingus flights from Chicago to Southampton

Our best Aer Lingus deals on Chicago to Southampton flight tickets
Aer Lingus
11 Apr
ORD21:00Chicago O'Hare Intl
13h 50m
1 stop
SOU16:50Southampton Eastleigh
18 Apr
SOU09:10Southampton Eastleigh
16h 05m
1 stop
ORD19:15Chicago O'Hare Intl
£635
Aer Lingus
11 Apr
ORD15:45Chicago O'Hare Intl
10h 50m
1 stop
SOU08:35Southampton Eastleigh
18 Apr
SOU09:10Southampton Eastleigh
16h 05m
1 stop
ORD19:15Chicago O'Hare Intl
£656
Aer Lingus
1 Aug
ORD15:34Chicago O'Hare Intl
19h 16m
2 stops
SOU16:50Southampton Eastleigh
22 Aug
SOU20:00Southampton Eastleigh
21h 30m
1 stop
ORD11:30Chicago O'Hare Intl
£717

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 27 February 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

ChicagoSouthampton

ORD - SOU

ORDSOU

Chicago O'Hare Intl

Mon 9/3

17:25-17:00

1 stop18h 35m

Southampton Eastleigh

Tue 17/3

17:35-15:20

1 stop26h 45m

£579

ChicagoSouthampton

ORD - SOU

ORDSOU

Chicago O'Hare Intl

Mon 16/3

17:25-08:20

1 stop9h 55m

Southampton Eastleigh

Wed 25/3

08:50-15:20

1 stop11h 30m

£580

ChicagoSouthampton

ORD - SOU

ORDSOU

Chicago O'Hare Intl

Tue 10/3

07:10-08:20

2 stops20h 10m

Southampton Eastleigh

Tue 17/3

17:35-15:20

1 stop26h 45m

£583

ChicagoSouthampton

ORD - SOU

ORDSOU

Chicago O'Hare Intl

Sun 5/4

16:20-08:35

1 stop10h 15m

Southampton Eastleigh

Tue 21/4

09:05-14:15

1 stop11h 10m

£583

ChicagoSouthampton

ORD - SOU

ORDSOU

Chicago O'Hare Intl

Mon 9/3

17:25-08:20

1 stop9h 55m

Southampton Eastleigh

Thu 19/3

08:50-20:17

2 stops16h 27m

£586

ChicagoSouthampton

MDW - SOU

MDWSOU

Chicago Midway

Sun 5/4

09:30-16:50

2 stops25h 20m

Southampton Eastleigh

Tue 21/4

17:20-16:26

2 stops29h 06m

£587

ChicagoSouthampton

ORD - SOU

ORDSOU

Chicago O'Hare Intl

Sun 5/4

10:40-08:35

2 stops15h 55m

Southampton Eastleigh

Tue 21/4

09:05-18:13

2 stops15h 08m

£587

ChicagoSouthampton

ORD - SOU

ORDSOU

Chicago O'Hare Intl

Wed 11/3

05:30-08:20

2 stops21h 50m

Southampton Eastleigh

Thu 19/3

08:50-20:17

2 stops16h 27m

£590

ChicagoSouthampton

MDW - SOU

MDWSOU

Chicago Midway

Sun 5/4

13:10-08:35

2 stops13h 25m

Southampton Eastleigh

Tue 21/4

09:05-18:36

2 stops15h 31m

£654

ChicagoSouthampton

MDW - SOU

MDWSOU

Chicago Midway

Mon 13/4

19:16-16:50

2 stops15h 34m

Southampton Eastleigh

Mon 20/4

09:05-18:36

2 stops15h 31m

£961

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 is the most popular carrier operating from Chicago to Southampton Eastleigh

Which airlines fly to Southampton?

British Airways, Iberia and Aer Lingus 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 58% 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 25m

Direct flights

None
The fastest flight from Chicago to Southampton takes 10h 25m
There are no direct flights from Chicago to Southampton. There are no popular flight routes from Chicago to Southampton.
Search flight deals

  • 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 25m.

  • 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.

An easier way to manage your Southampton trip

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