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Cheap flights from Illinois 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 Illinois 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.
1 adult
0 bags

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Find the cheapest flights from Illinois to London

Cheap round-trip flights

Enter your travel dates to find the best prices.
Multiple Airlines Logo
9:50 am - 7:30 pm
ORD
-
SOU
27h 40m
2 stops
Multiple Airlines Logo
8:00 pm - 12:55 pm
SOU
-
ORD
46h 55m
2 stops
$783Multiple Airlines
Sun, Mar 29 - Sun, Apr 5
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
$791Delta
Mon, Apr 6 - Wed, Apr 29
Delta Logo
7:10 am - 8:35 am
ORD
-
SOU
19h 25m
2 stops
Delta Logo
5:20 pm - 2:30 pm
SOU
-
ORD
27h 10m
1 stop
$796Delta
Mon, Apr 6 - Tue, Apr 28
Virgin Atlantic Logo
4:20 pm - 8:35 am
ORD
-
SOU
10h 15m
1 stop
Virgin Atlantic Logo
5:20 pm - 2:30 pm
SOU
-
ORD
27h 10m
1 stop
$824Virgin Atlantic
Sun, Mar 29 - Sun, Apr 5
Delta Logo
4:20 pm - 8:35 am
ORD
-
SOU
10h 15m
1 stop
Delta Logo
9:05 am - 2:30 pm
SOU
-
ORD
11h 25m
1 stop
$841Delta
Tue, Apr 7 - Mon, Apr 27
Delta Logo
12:15 pm - 8:35 am
ORD
-
SOU
14h 20m
2 stops
Delta Logo
9:05 am - 2:30 pm
SOU
-
ORD
11h 25m
1 stop
$846Delta
Mon, Apr 6 - Mon, Apr 27
Delta Logo
4:20 pm - 8:35 am
ORD
-
SOU
10h 15m
1 stop
Delta Logo
9:05 am - 7:48 pm
SOU
-
ORD
16h 43m
2 stops
$851Delta
Tue, Apr 7 - Mon, Apr 27
Multiple Airlines Logo
10:40 am - 8:35 am
ORD
-
SOU
15h 55m
2 stops
Multiple Airlines Logo
5:20 pm - 2:30 pm
SOU
-
ORD
27h 10m
1 stop
$870Multiple Airlines
Sun, Mar 29 - Sun, Apr 5
KLM Logo
10:40 am - 8:20 am
ORD
-
SOU
16h 40m
2 stops
KLM Logo
9:05 am - 2:15 pm
SOU
-
ORD
11h 10m
1 stop
$960KLM
Thu, Mar 26 - Thu, Apr 2
KLM Logo
10:45 am - 8:20 am
MDW
-
SOU
16h 35m
2 stops
KLM Logo
9:05 am - 6:40 pm
SOU
-
MDW
15h 35m
2 stops
$2,510KLM
Thu, Mar 26 - Thu, Apr 2

KLM flights from Illinois to Southampton

Our best KLM deals on Illinois 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 Illinois to Southampton

Our best Delta deals on Illinois to Southampton flight tickets
Delta
Apr 6
ORD4:50 pmChicago O'Hare Intl
18h 00m
1 stop
SOU4:50 pmSouthampton Eastleigh
Apr 29
SOU5:20 pmSouthampton Eastleigh
26h 55m
1 stop
ORD2:15 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 Illinois 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 12, 2026.
Use the filters below to find and compare flights from Illinois to Southampton that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

ChicagoSouthampton

ORD - SOU

ORDSOU

Chicago O'Hare Intl

Sun 3/29

9:50 am-7:30 pm

2 stops27h 40m

Southampton Eastleigh

Sun 4/5

8:00 pm-12:55 pm

2 stops46h 55m

$783

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

$791

ChicagoSouthampton

ORD - SOU

ORDSOU

Chicago O'Hare Intl

Mon 4/6

7:10 am-8:35 am

2 stops19h 25m

Southampton Eastleigh

Tue 4/28

5:20 pm-2:30 pm

1 stop27h 10m

$796

ChicagoSouthampton

ORD - SOU

ORDSOU

Chicago O'Hare Intl

Sun 3/29

4:20 pm-8:35 am

1 stop10h 15m

Southampton Eastleigh

Sun 4/5

5:20 pm-2:30 pm

1 stop27h 10m

$824

ChicagoSouthampton

ORD - SOU

ORDSOU

Chicago O'Hare Intl

Tue 4/7

4:20 pm-8:35 am

1 stop10h 15m

Southampton Eastleigh

Mon 4/27

9:05 am-2:30 pm

1 stop11h 25m

$841

ChicagoSouthampton

ORD - SOU

ORDSOU

Chicago O'Hare Intl

Mon 4/6

12:15 pm-8:35 am

2 stops14h 20m

Southampton Eastleigh

Mon 4/27

9:05 am-2:30 pm

1 stop11h 25m

$846

ChicagoSouthampton

ORD - SOU

ORDSOU

Chicago O'Hare Intl

Tue 4/7

4:20 pm-8:35 am

1 stop10h 15m

Southampton Eastleigh

Mon 4/27

9:05 am-7:48 pm

2 stops16h 43m

$851

ChicagoSouthampton

ORD - SOU

ORDSOU

Chicago O'Hare Intl

Sun 3/29

10:40 am-8:35 am

2 stops15h 55m

Southampton Eastleigh

Sun 4/5

5:20 pm-2:30 pm

1 stop27h 10m

$870

ChicagoSouthampton

ORD - SOU

ORDSOU

Chicago O'Hare Intl

Thu 3/26

10:40 am-8:20 am

2 stops16h 40m

Southampton Eastleigh

Thu 4/2

9:05 am-2:15 pm

1 stop11h 10m

$960

ChicagoSouthampton

MDW - SOU

MDWSOU

Chicago Midway

Thu 3/26

10:45 am-8:20 am

2 stops16h 35m

Southampton Eastleigh

Thu 4/2

9:05 am-6:40 pm

2 stops15h 35m

$2,510

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 Illinois 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 Illinois to Southampton Eastleigh?

Aer Lingus and Delta are the most popular carriers operating from Illinois 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 Illinois 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.

Cheap Illinois to Southampton flight deals and tips

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

Fastest flight time

10h 25m

Direct flights

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

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

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

  • How many operators does momondo search for flights from Illinois to Southampton Eastleigh Airport?

  • How old do you have to be to fly from Illinois to Southampton Eastleigh Airport?

    Although the minimum age for a child to fly alone is five, airlines that offer an unaccompanied minor (UMNR) service may have their own age limits, which could be impacted by factors such as flight length, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from Illinois to Southampton Eastleigh Airport.

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

    The required travel and health documents for your Southampton Eastleigh 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 Southampton Eastleigh Airport. We recommend that you seek guidance from your airline or a reliable third party such as IATA.

Best airlines flying from Illinois to Southampton

Compare and see reviews for airlines that fly from Illinois 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
Portsmouth

Why use momondo?

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

We help find the flight that best suits your needs, momondo compares prices from hundreds of airlines and travel agents and helps you filter them to find the best flight from Illinois to Southampton for you.

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

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

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

Once you have performed a search for Illinois to Southampton flights, momondo helps you find the right one by offering useful filters to narrow down your flight selection. Flights can be filtered by multiple factors such as airline, airport and price; but also by other criteria like aircraft type and payment method.

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

If you are not ready to book a flight from Illinois 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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