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Cheap flights from Illinois to London from $412

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 7/19. 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.
Aer Lingus Logo
9:00 pm - 7:30 pm
ORD
-
SOU
16h 30m
1 stop
Aer Lingus Logo
9:20 am - 7:15 pm
SOU
-
ORD
15h 55m
1 stop
$999Aer Lingus
Tue, May 12 - Tue, May 19
Delta Logo
4:20 pm - 8:35 am
ORD
-
SOU
10h 15m
1 stop
Delta Logo
5:20 pm - 2:30 pm
SOU
-
ORD
27h 10m
1 stop
$1,012Delta
Sun, Sep 20 - Tue, Sep 29
Delta Logo
8:00 am - 8:35 am
ORD
-
SOU
18h 35m
2 stops
Delta Logo
5:20 pm - 2:15 pm
SOU
-
ORD
26h 55m
1 stop
$1,016Delta
Mon, Sep 21 - Thu, Oct 1
Delta Logo
4:20 pm - 8:35 am
ORD
-
SOU
10h 15m
1 stop
Delta Logo
5:20 pm - 2:15 pm
SOU
-
ORD
26h 55m
1 stop
$1,062Delta
Thu, Sep 24 - Mon, Sep 28
Delta Logo
4:20 pm - 8:45 am
ORD
-
SOU
10h 25m
1 stop
Delta Logo
9:15 am - 2:30 pm
SOU
-
ORD
11h 15m
1 stop
$1,066Delta
Sun, Aug 9 - Wed, Aug 19
Delta Logo
12:27 pm - 5:35 pm
ORD
-
SOU
23h 08m
2 stops
Delta Logo
9:15 am - 2:30 pm
SOU
-
ORD
11h 15m
1 stop
$1,070Delta
Sun, Aug 9 - Wed, Aug 19
Delta Logo
4:20 pm - 8:45 am
ORD
-
SOU
10h 25m
1 stop
Delta Logo
6:05 pm - 5:41 pm
SOU
-
ORD
29h 36m
2 stops
$1,075Delta
Tue, Aug 11 - Wed, Aug 19
KLM Logo
11:26 am - 8:35 am
ORD
-
SOU
15h 09m
2 stops
KLM Logo
9:05 am - 7:20 pm
SOU
-
ORD
16h 15m
2 stops
$1,079KLM
Tue, May 12 - Tue, May 19
KLM Logo
11:05 am - 8:45 am
MDW
-
SOU
15h 40m
2 stops
KLM Logo
9:15 am - 6:18 pm
SOU
-
MDW
15h 03m
2 stops
$2,872KLM
Wed, Jul 29 - Sun, Aug 9
Multiple Airlines Logo
11:05 am - 8:35 am
MDW
-
SOU
15h 30m
2 stops
Multiple Airlines Logo
9:15 am - 10:15 pm
SOU
-
MDW
19h 00m
2 stops
$2,951Multiple Airlines
Sun, Jun 7 - Sun, Jul 12

Aer Lingus flights from Illinois to Southampton

Our best Aer Lingus deals on Illinois to Southampton flight tickets
Aer Lingus
May 12
ORD9:00 pmChicago O'Hare Intl
16h 30m
1 stop
SOU7:30 pmSouthampton Eastleigh
May 19
SOU9:20 amSouthampton Eastleigh
15h 55m
1 stop
ORD7:15 pmChicago O'Hare Intl
$999
Aer Lingus
May 7
ORD9:00 pmChicago O'Hare Intl
16h 30m
1 stop
SOU7:30 pmSouthampton Eastleigh
May 12
SOU9:20 amSouthampton Eastleigh
15h 55m
1 stop
ORD7:15 pmChicago O'Hare Intl
$1,238
Aer Lingus
Apr 3
ORD3:45 pmChicago O'Hare Intl
19h 05m
1 stop
SOU4:50 pmSouthampton Eastleigh
Apr 11
SOU9:20 amSouthampton Eastleigh
15h 55m
1 stop
ORD7:15 pmChicago O'Hare Intl
$1,274

Delta flights from Illinois to Southampton

Our best Delta deals on Illinois to Southampton flight tickets
Delta
Sep 20
ORD4:20 pmChicago O'Hare Intl
10h 15m
1 stop
SOU8:35 amSouthampton Eastleigh
Sep 29
SOU5:20 pmSouthampton Eastleigh
27h 10m
1 stop
ORD2:30 pmChicago O'Hare Intl
$1,012
Delta
Sep 21
ORD8:00 amChicago O'Hare Intl
18h 35m
2 stops
SOU8:35 amSouthampton Eastleigh
Oct 1
SOU5:20 pmSouthampton Eastleigh
26h 55m
1 stop
ORD2:15 pmChicago O'Hare Intl
$1,016
Delta
Sep 24
ORD4:20 pmChicago O'Hare Intl
10h 15m
1 stop
SOU8:35 amSouthampton Eastleigh
Sep 28
SOU5:20 pmSouthampton Eastleigh
26h 55m
1 stop
ORD2:15 pmChicago O'Hare Intl
$1,062

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 March 30, 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

Cheapest round-trip

ChicagoSouthampton

ORD - SOU

ORDSOU

Chicago O'Hare Intl

Tue 5/12

9:00 pm-7:30 pm

1 stop16h 30m

Southampton Eastleigh

Tue 5/19

9:20 am-7:15 pm

1 stop15h 55m

$999

ChicagoSouthampton

ORD - SOU

ORDSOU

Chicago O'Hare Intl

Sun 9/20

4:20 pm-8:35 am

1 stop10h 15m

Southampton Eastleigh

Tue 9/29

5:20 pm-2:30 pm

1 stop27h 10m

$1,012

ChicagoSouthampton

ORD - SOU

ORDSOU

Chicago O'Hare Intl

Mon 9/21

8:00 am-8:35 am

2 stops18h 35m

Southampton Eastleigh

Thu 10/1

5:20 pm-2:15 pm

1 stop26h 55m

$1,016

ChicagoSouthampton

ORD - SOU

ORDSOU

Chicago O'Hare Intl

Thu 9/24

4:20 pm-8:35 am

1 stop10h 15m

Southampton Eastleigh

Mon 9/28

5:20 pm-2:15 pm

1 stop26h 55m

$1,062
Quickest round-trip

ChicagoSouthampton

ORD - SOU

ORDSOU

Chicago O'Hare Intl

Sun 8/9

4:20 pm-8:45 am

1 stop10h 25m

Southampton Eastleigh

Wed 8/19

9:15 am-2:30 pm

1 stop11h 15m

$1,066

ChicagoSouthampton

ORD - SOU

ORDSOU

Chicago O'Hare Intl

Sun 8/9

12:27 pm-5:35 pm

2 stops23h 08m

Southampton Eastleigh

Wed 8/19

9:15 am-2:30 pm

1 stop11h 15m

$1,070

ChicagoSouthampton

ORD - SOU

ORDSOU

Chicago O'Hare Intl

Tue 8/11

4:20 pm-8:45 am

1 stop10h 25m

Southampton Eastleigh

Wed 8/19

6:05 pm-5:41 pm

2 stops29h 36m

$1,075

ChicagoSouthampton

ORD - SOU

ORDSOU

Chicago O'Hare Intl

Tue 5/12

11:26 am-8:35 am

2 stops15h 09m

Southampton Eastleigh

Tue 5/19

9:05 am-7:20 pm

2 stops16h 15m

$1,079

ChicagoSouthampton

MDW - SOU

MDWSOU

Chicago Midway

Wed 7/29

11:05 am-8:45 am

2 stops15h 40m

Southampton Eastleigh

Sun 8/9

9:15 am-6:18 pm

2 stops15h 03m

$2,872

ChicagoSouthampton

MDW - SOU

MDWSOU

Chicago Midway

Sun 6/7

11:05 am-8:35 am

2 stops15h 30m

Southampton Eastleigh

Sun 7/12

9:15 am-10:15 pm

2 stops19h 00m

$2,951

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?

Delta, KLM, and Aer Lingus are the most popular carriers operating from Illinois to Southampton Eastleigh

What airlines fly to Southampton?

British Airways, American Airlines and United 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 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.

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.

An easier way to manage your Southampton trip

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