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Cheap flights from Illinois to London from $589

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 8/14. 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
1 adult, Economy, 0 bags

Find the cheapest flights from Illinois to London

Cheap round-trip flights

Enter your travel dates to find the best prices.
Aer Lingus Logo
3:45 pm - 8:05 am
ORD
-
SOU
10h 20m
1 stop
Aer Lingus Logo
9:15 am - 7:15 pm
SOU
-
ORD
16h 00m
1 stop
$914Aer Lingus
Tue, Aug 11 - Tue, Aug 18
Multiple Airlines Logo
3:45 pm - 4:50 pm
ORD
-
SOU
19h 05m
2 stops
Multiple Airlines Logo
8:00 pm - 2:55 pm
SOU
-
ORD
24h 55m
2 stops
$926Multiple Airlines
Tue, Aug 11 - Tue, Aug 18
Aer Lingus Logo
9:00 pm - 7:30 pm
ORD
-
SOU
16h 30m
1 stop
Aer Lingus Logo
9:15 am - 7:15 pm
SOU
-
ORD
16h 00m
1 stop
$929Aer Lingus
Tue, Aug 11 - Tue, Aug 18
Multiple Airlines Logo
3:45 pm - 8:40 am
ORD
-
SOU
10h 55m
1 stop
Multiple Airlines Logo
7:20 pm - 7:15 pm
SOU
-
ORD
29h 55m
2 stops
$955Multiple Airlines
Mon, Aug 17 - Mon, Aug 31
Multiple Airlines Logo
9:00 pm - 9:25 am
ORD
-
SOU
30h 25m
2 stops
Multiple Airlines Logo
9:15 am - 7:15 pm
SOU
-
ORD
16h 00m
1 stop
$1,013Multiple Airlines
Tue, Aug 11 - Tue, Aug 18
Multiple Airlines Logo
3:45 pm - 12:55 pm
ORD
-
SOU
15h 10m
2 stops
Multiple Airlines Logo
9:15 am - 7:15 pm
SOU
-
ORD
16h 00m
1 stop
$1,015Multiple Airlines
Tue, Aug 11 - Tue, Aug 18
Delta Logo
4:20 pm - 8:45 am
ORD
-
SOU
10h 25m
1 stop
Delta Logo
5:20 pm - 2:30 pm
SOU
-
ORD
27h 10m
1 stop
$1,061Delta
Tue, Sep 1 - Tue, Sep 15
KLM Logo
1:25 pm - 8:45 am
MDW
-
SOU
13h 20m
2 stops
KLM Logo
9:15 am - 6:01 pm
SOU
-
MDW
14h 46m
2 stops
$1,115KLM
Fri, Aug 14 - Fri, Aug 21
KLM Logo
1:25 pm - 8:45 am
MDW
-
SOU
13h 20m
2 stops
KLM Logo
9:15 am - 6:01 pm
SOU
-
MDW
14h 46m
2 stops
$1,118KLM
Fri, Aug 14 - Fri, Aug 21
Delta Logo
9:59 am - 8:45 am
MDW
-
SOU
16h 46m
2 stops
Delta Logo
9:05 am - 6:01 pm
SOU
-
MDW
14h 56m
2 stops
$1,125Delta
Mon, Aug 17 - Mon, Aug 31

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Aer Lingus flights from Illinois to Southampton

Our best Aer Lingus deals on Illinois to Southampton flight tickets
Aer Lingus
Aug 11
ORD3:45 pmChicago O'Hare Intl
10h 20m
1 stop
SOU8:05 amSouthampton Eastleigh
Aug 18
SOU9:15 amSouthampton Eastleigh
16h 00m
1 stop
ORD7:15 pmChicago O'Hare Intl
$914
Aer Lingus
Aug 11
ORD9:00 pmChicago O'Hare Intl
16h 30m
1 stop
SOU7:30 pmSouthampton Eastleigh
Aug 18
SOU9:15 amSouthampton Eastleigh
16h 00m
1 stop
ORD7:15 pmChicago O'Hare Intl
$929
Aer Lingus
Aug 14
ORD9:00 pmChicago O'Hare Intl
13h 50m
1 stop
SOU4:50 pmSouthampton Eastleigh
Aug 21
SOU9:20 amSouthampton Eastleigh
15h 55m
1 stop
ORD7:15 pmChicago O'Hare Intl
$940

KLM flights from Illinois to Southampton

Our best KLM deals on Illinois to Southampton flight tickets
KLM
Aug 14
MDW1:25 pmChicago Midway
13h 20m
2 stops
SOU8:45 amSouthampton Eastleigh
Aug 21
SOU9:15 amSouthampton Eastleigh
14h 46m
2 stops
MDW6:01 pmChicago Midway
$1,115
KLM
Aug 14
MDW1:25 pmChicago Midway
13h 20m
2 stops
SOU8:45 amSouthampton Eastleigh
Aug 21
SOU9:15 amSouthampton Eastleigh
14h 46m
2 stops
MDW6:01 pmChicago Midway
$1,118
KLM
Aug 10
ORD11:23 amChicago O'Hare Intl
15h 22m
2 stops
SOU8:45 amSouthampton Eastleigh
Aug 17
SOU6:05 pmSouthampton Eastleigh
26h 10m
1 stop
ORD2:15 pmChicago O'Hare Intl
$1,121

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 July 1, 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
Quickest round-trip

ChicagoSouthampton

ORD - SOU

ORDSOU

Chicago O'Hare Intl

Tue 8/11

3:45 pm-8:05 am

1 stop10h 20m

Southampton Eastleigh

Tue 8/18

9:15 am-7:15 pm

1 stop16h 00m

$914

ChicagoSouthampton

ORD - SOU

ORDSOU

Chicago O'Hare Intl

Tue 8/11

3:45 pm-4:50 pm

2 stops19h 05m

Southampton Eastleigh

Tue 8/18

8:00 pm-2:55 pm

2 stops24h 55m

$926

ChicagoSouthampton

ORD - SOU

ORDSOU

Chicago O'Hare Intl

Tue 8/11

9:00 pm-7:30 pm

1 stop16h 30m

Southampton Eastleigh

Tue 8/18

9:15 am-7:15 pm

1 stop16h 00m

$929

ChicagoSouthampton

ORD - SOU

ORDSOU

Chicago O'Hare Intl

Mon 8/17

3:45 pm-8:40 am

1 stop10h 55m

Southampton Eastleigh

Mon 8/31

7:20 pm-7:15 pm

2 stops29h 55m

$955

ChicagoSouthampton

ORD - SOU

ORDSOU

Chicago O'Hare Intl

Tue 8/11

9:00 pm-9:25 am

2 stops30h 25m

Southampton Eastleigh

Tue 8/18

9:15 am-7:15 pm

1 stop16h 00m

$1,013

ChicagoSouthampton

ORD - SOU

ORDSOU

Chicago O'Hare Intl

Tue 8/11

3:45 pm-12:55 pm

2 stops15h 10m

Southampton Eastleigh

Tue 8/18

9:15 am-7:15 pm

1 stop16h 00m

$1,015

ChicagoSouthampton

ORD - SOU

ORDSOU

Chicago O'Hare Intl

Tue 9/1

4:20 pm-8:45 am

1 stop10h 25m

Southampton Eastleigh

Tue 9/15

5:20 pm-2:30 pm

1 stop27h 10m

$1,061

ChicagoSouthampton

MDW - SOU

MDWSOU

Chicago Midway

Fri 8/14

1:25 pm-8:45 am

2 stops13h 20m

Southampton Eastleigh

Fri 8/21

9:15 am-6:01 pm

2 stops14h 46m

$1,115

ChicagoSouthampton

MDW - SOU

MDWSOU

Chicago Midway

Fri 8/14

1:25 pm-8:45 am

2 stops13h 20m

Southampton Eastleigh

Fri 8/21

9:15 am-6:01 pm

2 stops14h 46m

$1,118

ChicagoSouthampton

MDW - SOU

MDWSOU

Chicago Midway

Mon 8/17

9:59 am-8:45 am

2 stops16h 46m

Southampton Eastleigh

Mon 8/31

9:05 am-6:01 pm

2 stops14h 56m

$1,125

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 44% of people opting to fly with this airline when traveling to Southampton. Keep in mind that there are 15 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 20m

Direct flights

None
The fastest flight from Illinois to Southampton takes 10h 20m
There are no direct flights from Illinois to Southampton. There are no popular flight routes from Illinois to Southampton.
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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 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.

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