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Cheap flights from Illinois to London from $374

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 1/15. 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 round-trip flights

Enter your travel dates to find the best prices.
Delta Logo
4:25 pm - 8:25 am
ORD
-
SOU
10h 00m1 stop
Delta Logo
9:25 am - 2:20 pm
SOU
-
ORD
10h 55m1 stop
$770Delta
Wed, Feb 11 - Wed, Feb 18
Delta Logo
10:35 am - 8:25 am
ORD
-
SOU
15h 50m2 stops
Delta Logo
9:25 am - 2:20 pm
SOU
-
ORD
10h 55m1 stop
$774Delta
Wed, Feb 11 - Wed, Feb 18
Delta Logo
5:25 pm - 8:20 am
ORD
-
SOU
9h 55m1 stop
Delta Logo
5:20 pm - 6:31 pm
SOU
-
ORD
31h 11m2 stops
$780Delta
Mon, Mar 23 - Mon, Mar 30
KLM Logo
10:46 am - 8:25 am
MDW
-
SOU
15h 39m2 stops
KLM Logo
5:35 pm - 5:37 pm
SOU
-
MDW
30h 02m2 stops
$784KLM
Wed, Feb 11 - Wed, Feb 18
Delta Logo
4:50 pm - 4:50 pm
ORD
-
SOU
18h 00m1 stop
Delta Logo
5:20 pm - 2:15 pm
SOU
-
ORD
26h 55m1 stop
$784Delta
Mon, May 4 - Mon, May 11
Multiple Airlines Logo
6:35 pm - 3:35 pm
ORD
-
SOU
15h 00m1 stop
Multiple Airlines Logo
9:30 am - 12:45 pm
SOU
-
ORD
33h 15m2 stops
$785Multiple Airlines
Mon, Feb 9 - Mon, Feb 16
Delta Logo
7:00 am - 4:50 pm
ORD
-
SOU
27h 50m2 stops
Delta Logo
5:20 pm - 2:15 pm
SOU
-
ORD
26h 55m1 stop
$789Delta
Mon, May 4 - Mon, May 11
Delta Logo
3:59 pm - 8:20 am
ORD
-
SOU
35h 21m2 stops
Delta Logo
5:20 pm - 6:31 pm
SOU
-
ORD
31h 11m2 stops
$790Delta
Sat, Mar 21 - Mon, Mar 30
KLM Logo
10:40 am - 8:35 am
ORD
-
SOU
15h 55m2 stops
KLM Logo
9:05 am - 9:34 pm
SOU
-
ORD
18h 29m2 stops
$798KLM
Wed, Apr 1 - Wed, Apr 8
KLM Logo
7:20 pm - 4:50 pm
MDW
-
SOU
15h 30m2 stops
KLM Logo
9:05 am - 6:40 pm
SOU
-
MDW
15h 35m2 stops
$798KLM
Wed, Apr 1 - Wed, Apr 8

KLM flights from Illinois to Southampton

Our best KLM deals on Illinois to Southampton flight tickets
KLM
Feb 11
MDW10:46 amChicago Midway
15h 39m
2 stops
SOU8:25 amSouthampton Eastleigh
Feb 18
SOU5:35 pmSouthampton Eastleigh
30h 02m
2 stops
MDW5:37 pmChicago Midway
$784
Find similar
KLM
Apr 1
ORD10:40 amChicago O'Hare Intl
15h 55m
2 stops
SOU8:35 amSouthampton Eastleigh
Apr 8
SOU9:05 amSouthampton Eastleigh
18h 29m
2 stops
ORD9:34 pmChicago O'Hare Intl
$798
Find similar
KLM
Jan 18
ORD11:17 amChicago O'Hare Intl
15h 33m
2 stops
SOU8:50 amSouthampton Eastleigh
Jan 25
SOU5:45 pmSouthampton Eastleigh
26h 35m
1 stop
ORD2:20 pmChicago O'Hare Intl
$833
Find similar

Delta flights from Illinois to Southampton

Our best Delta deals on Illinois to Southampton flight tickets
Delta
Feb 11
ORD4:25 pmChicago O'Hare Intl
10h 00m
1 stop
SOU8:25 amSouthampton Eastleigh
Feb 18
SOU9:25 amSouthampton Eastleigh
10h 55m
1 stop
ORD2:20 pmChicago O'Hare Intl
$770
Find similar
Delta
Feb 11
ORD10:35 amChicago O'Hare Intl
15h 50m
2 stops
SOU8:25 amSouthampton Eastleigh
Feb 18
SOU9:25 amSouthampton Eastleigh
10h 55m
1 stop
ORD2:20 pmChicago O'Hare Intl
$774
Find similar
Delta
Mar 23
ORD5:25 pmChicago O'Hare Intl
9h 55m
1 stop
SOU8:20 amSouthampton Eastleigh
Mar 30
SOU5:20 pmSouthampton Eastleigh
31h 11m
2 stops
ORD6:31 pmChicago O'Hare Intl
$780
Find similar

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 December 28, 2025.
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

Wed 2/11

4:25 pm-8:25 am

1 stop10h 00m

Southampton Eastleigh

Wed 2/18

9:25 am-2:20 pm

1 stop10h 55m

$770

ChicagoSouthampton

ORD - SOU

ORDSOU

Chicago O'Hare Intl

Wed 2/11

10:35 am-8:25 am

2 stops15h 50m

Southampton Eastleigh

Wed 2/18

9:25 am-2:20 pm

1 stop10h 55m

$774

ChicagoSouthampton

ORD - SOU

ORDSOU

Chicago O'Hare Intl

Mon 3/23

5:25 pm-8:20 am

1 stop9h 55m

Southampton Eastleigh

Mon 3/30

5:20 pm-6:31 pm

2 stops31h 11m

$780

ChicagoSouthampton

MDW - SOU

MDWSOU

Chicago Midway

Wed 2/11

10:46 am-8:25 am

2 stops15h 39m

Southampton Eastleigh

Wed 2/18

5:35 pm-5:37 pm

2 stops30h 02m

$784

ChicagoSouthampton

ORD - SOU

ORDSOU

Chicago O'Hare Intl

Mon 5/4

4:50 pm-4:50 pm

1 stop18h 00m

Southampton Eastleigh

Mon 5/11

5:20 pm-2:15 pm

1 stop26h 55m

$784

ChicagoSouthampton

ORD - SOU

ORDSOU

Chicago O'Hare Intl

Mon 2/9

6:35 pm-3:35 pm

1 stop15h 00m

Southampton Eastleigh

Mon 2/16

9:30 am-12:45 pm

2 stops33h 15m

$785

ChicagoSouthampton

ORD - SOU

ORDSOU

Chicago O'Hare Intl

Mon 5/4

7:00 am-4:50 pm

2 stops27h 50m

Southampton Eastleigh

Mon 5/11

5:20 pm-2:15 pm

1 stop26h 55m

$789

ChicagoSouthampton

ORD - SOU

ORDSOU

Chicago O'Hare Intl

Sat 3/21

3:59 pm-8:20 am

2 stops35h 21m

Southampton Eastleigh

Mon 3/30

5:20 pm-6:31 pm

2 stops31h 11m

$790

ChicagoSouthampton

ORD - SOU

ORDSOU

Chicago O'Hare Intl

Wed 4/1

10:40 am-8:35 am

2 stops15h 55m

Southampton Eastleigh

Wed 4/8

9:05 am-9:34 pm

2 stops18h 29m

$798

ChicagoSouthampton

MDW - SOU

MDWSOU

Chicago Midway

Wed 4/1

7:20 pm-4:50 pm

2 stops15h 30m

Southampton Eastleigh

Wed 4/8

9:05 am-6:40 pm

2 stops15h 35m

$798

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 15m

Direct flights

None
The fastest flight from Illinois to Southampton takes 10h 15m
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 $653Free CancellationRating
7.2
1,412 reviews
Search Aer Lingus 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.

An easier way to manage your Southampton trip

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