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Cheap flights from Chicago O'Hare Intl Airport to London from $644

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 4/2. 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

Cheap round-trip flights

Enter your travel dates to find the best prices.
Delta Logo
5:25 pm - 8:20 am
ORD
-
SOU
9h 55m
1 stop
Delta Logo
8:50 am - 8:30 am
SOU
-
ORD
28h 40m
2 stops
$786Delta
Sun, Mar 15 - Tue, Mar 24
Delta Logo
4:50 pm - 4:50 pm
ORD
-
SOU
18h 00m
1 stop
Delta Logo
5:20 pm - 2:15 pm
SOU
-
ORD
26h 55m
1 stop
$790Delta
Mon, Apr 6 - Wed, Apr 29
Delta Logo
2:10 pm - 4:50 pm
ORD
-
SOU
20h 40m
2 stops
Delta Logo
9:05 am - 2:15 pm
SOU
-
ORD
11h 10m
1 stop
$795Delta
Mon, Apr 6 - Thu, Apr 30
Delta Logo
10:40 am - 8:20 am
ORD
-
SOU
16h 40m
2 stops
Delta Logo
8:50 am - 8:30 am
SOU
-
ORD
28h 40m
2 stops
$849Delta
Thu, Mar 19 - Tue, Mar 24
Delta Logo
5:25 pm - 5:05 pm
ORD
-
SOU
18h 40m
1 stop
Delta Logo
5:35 pm - 9:49 pm
SOU
-
ORD
33h 14m
2 stops
$871Delta
Sun, Mar 15 - Wed, Mar 25
Delta Logo
10:40 am - 5:00 pm
ORD
-
SOU
25h 20m
2 stops
Delta Logo
5:35 pm - 9:49 pm
SOU
-
ORD
33h 14m
2 stops
$875Delta
Mon, Mar 16 - Wed, Mar 25
Delta Logo
1:37 pm - 8:20 am
ORD
-
SOU
13h 43m
2 stops
Delta Logo
5:35 pm - 9:49 pm
SOU
-
ORD
33h 14m
2 stops
$925Delta
Thu, Mar 19 - Wed, Mar 25
Delta Logo
5:25 pm - 8:20 am
ORD
-
SOU
9h 55m
1 stop
Delta Logo
8:50 am - 3:20 pm
SOU
-
ORD
11h 30m
1 stop
$940Delta
Sun, Mar 15 - Mon, Mar 23
Delta Logo
5:25 pm - 8:20 am
ORD
-
SOU
9h 55m
1 stop
Delta Logo
8:50 am - 3:20 pm
SOU
-
ORD
11h 30m
1 stop
$944Delta
Wed, Mar 18 - Mon, Mar 23
Delta Logo
1:57 pm - 8:20 am
ORD
-
SOU
13h 23m
2 stops
Delta Logo
8:50 am - 3:20 pm
SOU
-
ORD
11h 30m
1 stop
$949Delta
Tue, Mar 17 - Mon, Mar 23

KLM flights from Chicago O'Hare Intl Airport to Southampton

Our best KLM deals on Chicago O'Hare Intl Airport to Southampton flight tickets
KLM
Mar 26
ORD10:40 amChicago O'Hare Intl
16h 40m
2 stops
SOU8:20 amSouthampton Eastleigh
Apr 2
SOU9:05 amSouthampton Eastleigh
11h 10m
1 stop
ORD2:15 pmChicago O'Hare Intl
$960
KLM
Jul 28
ORD4:20 pmChicago O'Hare Intl
10h 25m
1 stop
SOU8:45 amSouthampton Eastleigh
Aug 8
SOU9:15 amSouthampton Eastleigh
18h 51m
2 stops
ORD10:06 pmChicago O'Hare Intl
$1,091
KLM
Jul 6
ORD4:50 pmChicago O'Hare Intl
18h 45m
1 stop
SOU5:35 pmSouthampton Eastleigh
Jul 19
SOU5:30 pmSouthampton Eastleigh
27h 00m
1 stop
ORD2:30 pmChicago O'Hare Intl
$1,131

Delta flights from Chicago O'Hare Intl Airport to Southampton

Our best Delta deals on Chicago O'Hare Intl Airport to Southampton flight tickets
Delta
Apr 6
ORD4:50 pmChicago O'Hare Intl
18h 00m
1 stop
SOU4:50 pmSouthampton Eastleigh
Apr 28
SOU5:20 pmSouthampton Eastleigh
27h 10m
1 stop
ORD2:30 pmChicago O'Hare Intl
$791
Delta
Apr 6
ORD7:10 amChicago O'Hare Intl
19h 25m
2 stops
SOU8:35 amSouthampton Eastleigh
Apr 28
SOU5:20 pmSouthampton Eastleigh
27h 10m
1 stop
ORD2:30 pmChicago O'Hare Intl
$796
Delta
Apr 7
ORD4:20 pmChicago O'Hare Intl
10h 15m
1 stop
SOU8:35 amSouthampton Eastleigh
Apr 27
SOU9:05 amSouthampton Eastleigh
11h 25m
1 stop
ORD2:30 pmChicago O'Hare Intl
$841

momondo Fare Finder

 
Customize your flight search to find flights from Chicago O'Hare Intl Airport 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 832,500 searches. Data last updated February 11, 2026.
Use the filters below to find and compare flights from Chicago O'Hare Intl Airport to Southampton that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

ChicagoSouthampton

ORD - SOU

ORDSOU

Chicago O'Hare Intl

Sun 3/15

5:25 pm-8:20 am

1 stop9h 55m

Southampton Eastleigh

Tue 3/24

8:50 am-8:30 am

2 stops28h 40m

$786

ChicagoSouthampton

ORD - SOU

ORDSOU

Chicago O'Hare Intl

Mon 4/6

4:50 pm-4:50 pm

1 stop18h 00m

Southampton Eastleigh

Wed 4/29

5:20 pm-2:15 pm

1 stop26h 55m

$790

ChicagoSouthampton

ORD - SOU

ORDSOU

Chicago O'Hare Intl

Mon 4/6

2:10 pm-4:50 pm

2 stops20h 40m

Southampton Eastleigh

Thu 4/30

9:05 am-2:15 pm

1 stop11h 10m

$795

ChicagoSouthampton

ORD - SOU

ORDSOU

Chicago O'Hare Intl

Thu 3/19

10:40 am-8:20 am

2 stops16h 40m

Southampton Eastleigh

Tue 3/24

8:50 am-8:30 am

2 stops28h 40m

$849

ChicagoSouthampton

ORD - SOU

ORDSOU

Chicago O'Hare Intl

Sun 3/15

5:25 pm-5:05 pm

1 stop18h 40m

Southampton Eastleigh

Wed 3/25

5:35 pm-9:49 pm

2 stops33h 14m

$871

ChicagoSouthampton

ORD - SOU

ORDSOU

Chicago O'Hare Intl

Mon 3/16

10:40 am-5:00 pm

2 stops25h 20m

Southampton Eastleigh

Wed 3/25

5:35 pm-9:49 pm

2 stops33h 14m

$875

ChicagoSouthampton

ORD - SOU

ORDSOU

Chicago O'Hare Intl

Thu 3/19

1:37 pm-8:20 am

2 stops13h 43m

Southampton Eastleigh

Wed 3/25

5:35 pm-9:49 pm

2 stops33h 14m

$925

ChicagoSouthampton

ORD - SOU

ORDSOU

Chicago O'Hare Intl

Sun 3/15

5:25 pm-8:20 am

1 stop9h 55m

Southampton Eastleigh

Mon 3/23

8:50 am-3:20 pm

1 stop11h 30m

$940

ChicagoSouthampton

ORD - SOU

ORDSOU

Chicago O'Hare Intl

Wed 3/18

5:25 pm-8:20 am

1 stop9h 55m

Southampton Eastleigh

Mon 3/23

8:50 am-3:20 pm

1 stop11h 30m

$944

ChicagoSouthampton

ORD - SOU

ORDSOU

Chicago O'Hare Intl

Tue 3/17

1:57 pm-8:20 am

2 stops13h 23m

Southampton Eastleigh

Mon 3/23

8:50 am-3:20 pm

1 stop11h 30m

$949

Flights are sorted by cheapest round-trip 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 O'Hare Intl Airport 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 O'Hare Intl to Southampton Eastleigh?

Aer Lingus is the most popular carrier operating from Chicago O'Hare Intl to Southampton Eastleigh

What airlines fly to Southampton?

British Airways, Iberia and American Airlines are the top three most popular airlines that fly to Southampton from Chicago O'Hare Intl Airport according to our data. British Airways is the first choice among our users, with 50% of people opting to fly with this airline when traveling to Southampton. Keep in mind that there are 18 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 O'Hare Intl Airport to Southampton

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

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

Fastest flight time

10h 25m

Direct flights

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

  • How far is Chicago O'Hare Intl to Southampton Eastleigh by plane?

    Southampton Eastleigh is 3920.9 mi away from Chicago O'Hare Intl. Flights usually cover this in 10h 25m, depending on flying conditions and air traffic around both airports.

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

    Prices for flights from Chicago O'Hare Intl Airport to Southampton Eastleigh Airport refresh daily.

  • How many operators does momondo search for flights from Chicago O'Hare Intl Airport to Southampton Eastleigh Airport?

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

  • What is the most popular airline from Chicago O'Hare Intl Airport to Southampton?

Best airlines flying from Chicago O'Hare Intl Airport to Southampton

Compare and see reviews for airlines that fly from Chicago O'Hare Intl Airport to Southampton with momondo
Airline
Rating
Free Cancellation
Price
Aer LingusPriceFrom $682Free CancellationRating
7.2
1,449 reviews
Search Aer Lingus flights
KLMPriceFrom $884Free CancellationRating
7.7
1,451 reviews
Search KLM flights

Traveling to a place near London?

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

Yes. momondo allows you to filter the results for Chicago to Southampton flights to just show those with flexible booking policies.

How can momondo help me find flights from Chicago to Southampton?

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 Southampton from Chicago.

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

If you are not ready to book a flight from Chicago to Southampton now, use our insights above to find helpful tips or alternatively set up a price alert, where momondo will track prices on flights to Southampton and let you know when they change.

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