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Cheap flights from Illinois to London from £284

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 4/8. 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.
Multiple Airlines Logo
15:45 - 08:40
ORD
-
SOU
10h 55m
1 stop
Multiple Airlines Logo
14:15 - 14:45
SOU
-
ORD
30h 30m
2 stops
£723Multiple Airlines
Wed, 5 Aug - Tue, 25 Aug
Aer Lingus Logo
11:45 - 08:40
ORD
-
SOU
14h 55m
2 stops
Aer Lingus Logo
09:20 - 19:15
SOU
-
ORD
15h 55m
1 stop
£738Aer Lingus
Fri, 7 Aug - Sun, 23 Aug
Aer Lingus Logo
15:45 - 16:50
ORD
-
SOU
19h 05m
1 stop
Aer Lingus Logo
09:20 - 19:52
SOU
-
ORD
16h 32m
2 stops
£756Aer Lingus
Thu, 6 Aug - Sat, 22 Aug
KLM Logo
16:20 - 08:45
ORD
-
SOU
10h 25m
1 stop
KLM Logo
17:20 - 14:15
SOU
-
ORD
26h 55m
1 stop
£757KLM
Tue, 25 Aug - Mon, 7 Sep
Multiple Airlines Logo
09:39 - 08:40
ORD
-
SOU
17h 01m
2 stops
Multiple Airlines Logo
09:20 - 19:34
SOU
-
ORD
16h 14m
2 stops
£758Multiple Airlines
Fri, 7 Aug - Sun, 23 Aug
Multiple Airlines Logo
10:56 - 08:40
ORD
-
SOU
15h 44m
2 stops
Multiple Airlines Logo
09:20 - 19:52
SOU
-
ORD
16h 32m
2 stops
£759Multiple Airlines
Thu, 6 Aug - Sat, 22 Aug
Multiple Airlines Logo
15:45 - 08:40
ORD
-
SOU
10h 55m
1 stop
Multiple Airlines Logo
14:15 - 14:45
SOU
-
ORD
30h 30m
2 stops
£760Multiple Airlines
Fri, 7 Aug - Tue, 25 Aug
KLM Logo
10:28 - 08:45
ORD
-
SOU
16h 17m
2 stops
KLM Logo
17:20 - 14:15
SOU
-
ORD
26h 55m
1 stop
£761KLM
Tue, 25 Aug - Mon, 7 Sep
Delta Logo
18:45 - 16:50
MDW
-
SOU
16h 05m
2 stops
Delta Logo
17:20 - 16:25
SOU
-
MDW
29h 05m
2 stops
£770Delta
Sun, 11 Oct - Thu, 15 Oct
Delta Logo
09:59 - 08:45
MDW
-
SOU
16h 46m
2 stops
Delta Logo
18:05 - 16:15
SOU
-
MDW
28h 10m
2 stops
£810Delta
Wed, 5 Aug - Tue, 25 Aug

KLM flights from Illinois to Southampton

Our best KLM deals on Illinois to Southampton flight tickets
KLM
25 Aug
ORD16:20Chicago O'Hare Intl
10h 25m
1 stop
SOU08:45Southampton Eastleigh
7 Sept
SOU17:20Southampton Eastleigh
26h 55m
1 stop
ORD14:15Chicago O'Hare Intl
£757
KLM
25 Aug
ORD10:28Chicago O'Hare Intl
16h 17m
2 stops
SOU08:45Southampton Eastleigh
7 Sept
SOU17:20Southampton Eastleigh
26h 55m
1 stop
ORD14:15Chicago O'Hare Intl
£761
KLM
25 Aug
ORD10:07Chicago O'Hare Intl
16h 38m
2 stops
SOU08:45Southampton Eastleigh
7 Sept
SOU17:20Southampton Eastleigh
26h 55m
1 stop
ORD14:15Chicago O'Hare Intl
£762

Aer Lingus flights from Illinois to Southampton

Our best Aer Lingus deals on Illinois to Southampton flight tickets
Aer Lingus
7 Aug
ORD11:45Chicago O'Hare Intl
14h 55m
2 stops
SOU08:40Southampton Eastleigh
23 Aug
SOU09:20Southampton Eastleigh
15h 55m
1 stop
ORD19:15Chicago O'Hare Intl
£738
Aer Lingus
6 Aug
ORD15:45Chicago O'Hare Intl
19h 05m
1 stop
SOU16:50Southampton Eastleigh
22 Aug
SOU09:20Southampton Eastleigh
16h 32m
2 stops
ORD19:52Chicago O'Hare Intl
£756
Aer Lingus
31 Jul
ORD15:45Chicago O'Hare Intl
10h 55m
1 stop
SOU08:40Southampton Eastleigh
14 Aug
SOU09:20Southampton Eastleigh
17h 00m
2 stops
ORD20:20Chicago O'Hare Intl
£766

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 17 May 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

Wed 5/8

15:45-08:40

1 stop10h 55m

Southampton Eastleigh

Tue 25/8

14:15-14:45

2 stops30h 30m

£723
Fastest return journey

ChicagoSouthampton

ORD - SOU

ORDSOU

Chicago O'Hare Intl

Fri 7/8

11:45-08:40

2 stops14h 55m

Southampton Eastleigh

Sun 23/8

09:20-19:15

1 stop15h 55m

£738

ChicagoSouthampton

ORD - SOU

ORDSOU

Chicago O'Hare Intl

Thu 6/8

15:45-16:50

1 stop19h 05m

Southampton Eastleigh

Sat 22/8

09:20-19:52

2 stops16h 32m

£756

ChicagoSouthampton

ORD - SOU

ORDSOU

Chicago O'Hare Intl

Tue 25/8

16:20-08:45

1 stop10h 25m

Southampton Eastleigh

Mon 7/9

17:20-14:15

1 stop26h 55m

£757

ChicagoSouthampton

ORD - SOU

ORDSOU

Chicago O'Hare Intl

Fri 7/8

09:39-08:40

2 stops17h 01m

Southampton Eastleigh

Sun 23/8

09:20-19:34

2 stops16h 14m

£758

ChicagoSouthampton

ORD - SOU

ORDSOU

Chicago O'Hare Intl

Thu 6/8

10:56-08:40

2 stops15h 44m

Southampton Eastleigh

Sat 22/8

09:20-19:52

2 stops16h 32m

£759

ChicagoSouthampton

ORD - SOU

ORDSOU

Chicago O'Hare Intl

Fri 7/8

15:45-08:40

1 stop10h 55m

Southampton Eastleigh

Tue 25/8

14:15-14:45

2 stops30h 30m

£760

ChicagoSouthampton

ORD - SOU

ORDSOU

Chicago O'Hare Intl

Tue 25/8

10:28-08:45

2 stops16h 17m

Southampton Eastleigh

Mon 7/9

17:20-14:15

1 stop26h 55m

£761

ChicagoSouthampton

MDW - SOU

MDWSOU

Chicago Midway

Sun 11/10

18:45-16:50

2 stops16h 05m

Southampton Eastleigh

Thu 15/10

17:20-16:25

2 stops29h 05m

£770

ChicagoSouthampton

MDW - SOU

MDWSOU

Chicago Midway

Wed 5/8

09:59-08:45

2 stops16h 46m

Southampton Eastleigh

Tue 25/8

18:05-16:15

2 stops28h 10m

£810

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 month to fly to Southampton?

The month of December is, on average, the cheapest month to fly to Southampton from Illinois, with most prices found around £0. If you’re not able to fly to Southampton in December, then November is your next best option. Flight prices from Illinois to Southampton during November average around £0.

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

Frequently asked questions about flying from Illinois to Southampton

  • 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

We make it super easy to schedule, organise and travel with friends or family. Trips is free – and available to use no matter where you book.
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