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Cheap flights from Illinois to London from £545

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 18/5. 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.
Delta Logo
17:25 - 08:20
ORD
-
SOU
9h 55m
1 stop
Delta Logo
08:50 - 08:30
SOU
-
ORD
28h 40m
2 stops
£576Delta
Sun, 15 Mar - Tue, 24 Mar
Delta Logo
18:34 - 17:00
MDW
-
SOU
17h 26m
2 stops
Delta Logo
08:50 - 09:56
SOU
-
MDW
30h 06m
2 stops
£579Delta
Mon, 16 Mar - Tue, 24 Mar
Delta Logo
16:50 - 16:50
ORD
-
SOU
18h 00m
1 stop
Delta Logo
09:05 - 14:15
SOU
-
ORD
11h 10m
1 stop
£579Delta
Mon, 6 Apr - Thu, 30 Apr
Delta Logo
14:10 - 16:50
ORD
-
SOU
20h 40m
2 stops
Delta Logo
09:05 - 14:15
SOU
-
ORD
11h 10m
1 stop
£583Delta
Mon, 6 Apr - Thu, 30 Apr
Delta Logo
12:47 - 08:20
MDW
-
SOU
14h 33m
2 stops
Delta Logo
08:50 - 09:56
SOU
-
MDW
30h 06m
2 stops
£586Delta
Wed, 18 Mar - Tue, 24 Mar
Delta Logo
14:10 - 16:50
ORD
-
SOU
20h 40m
2 stops
Delta Logo
09:05 - 14:15
SOU
-
ORD
11h 10m
1 stop
£589Delta
Wed, 1 Apr - Tue, 7 Apr
Multiple Airlines Logo
16:05 - 16:35
ORD
-
SOU
18h 30m
2 stops
Multiple Airlines Logo
09:10 - 12:55
SOU
-
ORD
33h 45m
2 stops
£593Multiple Airlines
Wed, 1 Apr - Tue, 7 Apr
Delta Logo
10:40 - 08:20
ORD
-
SOU
16h 40m
2 stops
Delta Logo
08:50 - 08:30
SOU
-
ORD
28h 40m
2 stops
£622Delta
Thu, 19 Mar - Tue, 24 Mar
Delta Logo
17:25 - 17:05
ORD
-
SOU
18h 40m
1 stop
Delta Logo
17:35 - 21:49
SOU
-
ORD
33h 14m
2 stops
£638Delta
Sun, 15 Mar - Wed, 25 Mar
KLM Logo
10:45 - 08:20
MDW
-
SOU
16h 35m
2 stops
KLM Logo
09:05 - 18:40
SOU
-
MDW
15h 35m
2 stops
£1,840KLM
Thu, 26 Mar - Thu, 2 Apr

KLM flights from Illinois to Southampton

Our best KLM deals on Illinois to Southampton flight tickets
KLM
6 Jul
ORD16:50Chicago O'Hare Intl
18h 45m
1 stop
SOU17:35Southampton Eastleigh
19 Jul
SOU17:30Southampton Eastleigh
27h 00m
1 stop
ORD14:30Chicago O'Hare Intl
£829
KLM
6 Jul
ORD17:20Chicago O'Hare Intl
18h 15m
2 stops
SOU17:35Southampton Eastleigh
19 Jul
SOU17:30Southampton Eastleigh
27h 00m
1 stop
ORD14:30Chicago O'Hare Intl
£833
KLM
28 Jul
ORD16:20Chicago O'Hare Intl
10h 25m
1 stop
SOU08:45Southampton Eastleigh
8 Aug
SOU09:15Southampton Eastleigh
11h 00m
1 stop
ORD14:15Chicago O'Hare Intl
£839

Delta flights from Illinois to Southampton

Our best Delta deals on Illinois to Southampton flight tickets
Delta
15 Mar
ORD17:25Chicago O'Hare Intl
9h 55m
1 stop
SOU08:20Southampton Eastleigh
24 Mar
SOU08:50Southampton Eastleigh
28h 40m
2 stops
ORD08:30Chicago O'Hare Intl
£576
Delta
6 Apr
ORD16:50Chicago O'Hare Intl
18h 00m
1 stop
SOU16:50Southampton Eastleigh
29 Apr
SOU17:20Southampton Eastleigh
26h 55m
1 stop
ORD14:15Chicago O'Hare Intl
£579
Delta
6 Apr
ORD14:10Chicago O'Hare Intl
20h 40m
2 stops
SOU16:50Southampton Eastleigh
30 Apr
SOU09:05Southampton Eastleigh
11h 10m
1 stop
ORD14:15Chicago O'Hare Intl
£583

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 10 February 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 15/3

17:25-08:20

1 stop9h 55m

Southampton Eastleigh

Tue 24/3

08:50-08:30

2 stops28h 40m

£576

ChicagoSouthampton

MDW - SOU

MDWSOU

Chicago Midway

Mon 16/3

18:34-17:00

2 stops17h 26m

Southampton Eastleigh

Tue 24/3

08:50-09:56

2 stops30h 06m

£579

ChicagoSouthampton

ORD - SOU

ORDSOU

Chicago O'Hare Intl

Mon 6/4

16:50-16:50

1 stop18h 00m

Southampton Eastleigh

Thu 30/4

09:05-14:15

1 stop11h 10m

£579

ChicagoSouthampton

ORD - SOU

ORDSOU

Chicago O'Hare Intl

Mon 6/4

14:10-16:50

2 stops20h 40m

Southampton Eastleigh

Thu 30/4

09:05-14:15

1 stop11h 10m

£583

ChicagoSouthampton

MDW - SOU

MDWSOU

Chicago Midway

Wed 18/3

12:47-08:20

2 stops14h 33m

Southampton Eastleigh

Tue 24/3

08:50-09:56

2 stops30h 06m

£586

ChicagoSouthampton

ORD - SOU

ORDSOU

Chicago O'Hare Intl

Wed 1/4

14:10-16:50

2 stops20h 40m

Southampton Eastleigh

Tue 7/4

09:05-14:15

1 stop11h 10m

£589

ChicagoSouthampton

ORD - SOU

ORDSOU

Chicago O'Hare Intl

Wed 1/4

16:05-16:35

2 stops18h 30m

Southampton Eastleigh

Tue 7/4

09:10-12:55

2 stops33h 45m

£593

ChicagoSouthampton

ORD - SOU

ORDSOU

Chicago O'Hare Intl

Thu 19/3

10:40-08:20

2 stops16h 40m

Southampton Eastleigh

Tue 24/3

08:50-08:30

2 stops28h 40m

£622

ChicagoSouthampton

ORD - SOU

ORDSOU

Chicago O'Hare Intl

Sun 15/3

17:25-17:05

1 stop18h 40m

Southampton Eastleigh

Wed 25/3

17:35-21:49

2 stops33h 14m

£638

ChicagoSouthampton

MDW - SOU

MDWSOU

Chicago Midway

Thu 26/3

10:45-08:20

2 stops16h 35m

Southampton Eastleigh

Thu 2/4

09:05-18:40

2 stops15h 35m

£1,840

Flights are sorted by cheapest return flights first.

Showing 1-10 of 20 resultsSorted by cheapest first
1
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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, Iberia and Aer Lingus 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 56% 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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