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Cheap flights from Illinois to London from £311

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 19/7. 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.
Aer Lingus Logo
21:00 - 19:30
ORD
-
SOU
16h 30m
1 stop
Aer Lingus Logo
09:20 - 19:15
SOU
-
ORD
15h 55m
1 stop
£753Aer Lingus
Tue, 12 May - Tue, 19 May
Delta Logo
16:20 - 08:35
ORD
-
SOU
10h 15m
1 stop
Delta Logo
17:20 - 14:30
SOU
-
ORD
27h 10m
1 stop
£763Delta
Sun, 20 Sep - Tue, 29 Sep
Delta Logo
08:00 - 08:35
ORD
-
SOU
18h 35m
2 stops
Delta Logo
17:20 - 14:15
SOU
-
ORD
26h 55m
1 stop
£766Delta
Mon, 21 Sep - Thu, 1 Oct
Delta Logo
16:20 - 08:35
ORD
-
SOU
10h 15m
1 stop
Delta Logo
17:20 - 14:15
SOU
-
ORD
26h 55m
1 stop
£801Delta
Thu, 24 Sep - Mon, 28 Sep
Delta Logo
16:20 - 08:45
ORD
-
SOU
10h 25m
1 stop
Delta Logo
09:15 - 14:30
SOU
-
ORD
11h 15m
1 stop
£804Delta
Sun, 9 Aug - Wed, 19 Aug
Delta Logo
05:15 - 17:35
ORD
-
SOU
30h 20m
2 stops
Delta Logo
09:15 - 14:15
SOU
-
ORD
11h 00m
1 stop
£807Delta
Sun, 9 Aug - Fri, 21 Aug
Delta Logo
16:20 - 08:45
ORD
-
SOU
10h 25m
1 stop
Delta Logo
18:05 - 17:41
SOU
-
ORD
29h 36m
2 stops
£811Delta
Tue, 11 Aug - Wed, 19 Aug
KLM Logo
11:26 - 08:35
ORD
-
SOU
15h 09m
2 stops
KLM Logo
09:05 - 19:20
SOU
-
ORD
16h 15m
2 stops
£814KLM
Tue, 12 May - Tue, 19 May
KLM Logo
11:05 - 08:45
MDW
-
SOU
15h 40m
2 stops
KLM Logo
09:15 - 18:18
SOU
-
MDW
15h 03m
2 stops
£2,165KLM
Wed, 29 Jul - Sun, 9 Aug
Multiple Airlines Logo
11:05 - 08:35
MDW
-
SOU
15h 30m
2 stops
Multiple Airlines Logo
09:15 - 22:15
SOU
-
MDW
19h 00m
2 stops
£2,225Multiple Airlines
Sun, 7 Jun - Sun, 12 Jul

Aer Lingus flights from Illinois to Southampton

Our best Aer Lingus deals on Illinois to Southampton flight tickets
Aer Lingus
12 May
ORD21:00Chicago O'Hare Intl
16h 30m
1 stop
SOU19:30Southampton Eastleigh
19 May
SOU09:20Southampton Eastleigh
15h 55m
1 stop
ORD19:15Chicago O'Hare Intl
£753
Aer Lingus
7 May
ORD21:00Chicago O'Hare Intl
16h 30m
1 stop
SOU19:30Southampton Eastleigh
12 May
SOU09:20Southampton Eastleigh
15h 55m
1 stop
ORD19:15Chicago O'Hare Intl
£933
Aer Lingus
3 Apr
ORD15:45Chicago O'Hare Intl
19h 05m
1 stop
SOU16:50Southampton Eastleigh
11 Apr
SOU09:20Southampton Eastleigh
15h 55m
1 stop
ORD19:15Chicago O'Hare Intl
£961

Delta flights from Illinois to Southampton

Our best Delta deals on Illinois to Southampton flight tickets
Delta
20 Sept
ORD16:20Chicago O'Hare Intl
10h 15m
1 stop
SOU08:35Southampton Eastleigh
29 Sept
SOU17:20Southampton Eastleigh
27h 10m
1 stop
ORD14:30Chicago O'Hare Intl
£763
Delta
21 Sept
ORD08:00Chicago O'Hare Intl
18h 35m
2 stops
SOU08:35Southampton Eastleigh
1 Oct
SOU17:20Southampton Eastleigh
26h 55m
1 stop
ORD14:15Chicago O'Hare Intl
£766
Delta
24 Sept
ORD16:20Chicago O'Hare Intl
10h 15m
1 stop
SOU08:35Southampton Eastleigh
28 Sept
SOU17:20Southampton Eastleigh
26h 55m
1 stop
ORD14:15Chicago O'Hare Intl
£801

momondo Fare Finder

 
Customise 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 279,928 searches. Data last updated 30 March 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 return flight

ChicagoSouthampton

ORD - SOU

ORDSOU

Chicago O'Hare Intl

Tue 12/5

21:00-19:30

1 stop16h 30m

Southampton Eastleigh

Tue 19/5

09:20-19:15

1 stop15h 55m

£753

ChicagoSouthampton

ORD - SOU

ORDSOU

Chicago O'Hare Intl

Sun 20/9

16:20-08:35

1 stop10h 15m

Southampton Eastleigh

Tue 29/9

17:20-14:30

1 stop27h 10m

£763

ChicagoSouthampton

ORD - SOU

ORDSOU

Chicago O'Hare Intl

Mon 21/9

08:00-08:35

2 stops18h 35m

Southampton Eastleigh

Thu 1/10

17:20-14:15

1 stop26h 55m

£766

ChicagoSouthampton

ORD - SOU

ORDSOU

Chicago O'Hare Intl

Thu 24/9

16:20-08:35

1 stop10h 15m

Southampton Eastleigh

Mon 28/9

17:20-14:15

1 stop26h 55m

£801
Fastest return journey

ChicagoSouthampton

ORD - SOU

ORDSOU

Chicago O'Hare Intl

Sun 9/8

16:20-08:45

1 stop10h 25m

Southampton Eastleigh

Wed 19/8

09:15-14:30

1 stop11h 15m

£804

ChicagoSouthampton

ORD - SOU

ORDSOU

Chicago O'Hare Intl

Sun 9/8

05:15-17:35

2 stops30h 20m

Southampton Eastleigh

Fri 21/8

09:15-14:15

1 stop11h 00m

£807

ChicagoSouthampton

ORD - SOU

ORDSOU

Chicago O'Hare Intl

Tue 11/8

16:20-08:45

1 stop10h 25m

Southampton Eastleigh

Wed 19/8

18:05-17:41

2 stops29h 36m

£811

ChicagoSouthampton

ORD - SOU

ORDSOU

Chicago O'Hare Intl

Tue 12/5

11:26-08:35

2 stops15h 09m

Southampton Eastleigh

Tue 19/5

09:05-19:20

2 stops16h 15m

£814

ChicagoSouthampton

MDW - SOU

MDWSOU

Chicago Midway

Wed 29/7

11:05-08:45

2 stops15h 40m

Southampton Eastleigh

Sun 9/8

09:15-18:18

2 stops15h 03m

£2,165

ChicagoSouthampton

MDW - SOU

MDWSOU

Chicago Midway

Sun 7/6

11:05-08:35

2 stops15h 30m

Southampton Eastleigh

Sun 12/7

09:15-22:15

2 stops19h 00m

£2,225

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

Which airlines fly to Southampton?

British Airways, Aer Lingus and Iberia 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 60% 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.

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 are updated daily.

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

momondo collates all your flight options in one place and lets you filter them to find the perfect flight from Illinois to Southampton. momondo saves you time and could save you money on your trip.

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?

Price alerts on flights to Southampton from Illinois are quick and easy to set up on momondo. Simply perform a search and select the price alert feature. It is as simple as that.

An easier way to manage your Southampton trip

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