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Cheap flights from Illinois to London from $755

This is the cheapest round-trip flight price found by a momondo user in the last 72 hours by searching for a flight from Illinois to London departing on 12/25. 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.
Aer Lingus Logo
3:50 pm - 8:45 amORD-SOU
10h 55m1 stop
Aer Lingus Logo
12:25 pm - 5:55 pmSOU-ORD
11h 30m1 stop
$755Aer Lingus
Find Deal
jue., dic. 25 - mié., dic. 31
Delta Logo
5:25 pm - 5:00 pmORD-SOU
18h 35m1 stop
Delta Logo
5:35 pm - 2:20 pmSOU-ORD
26h 45m1 stop
$769Delta
Find Deal
lun., mar. 23 - mar., mar. 31
Delta Logo
2:10 pm - 5:00 pmORD-SOU
21h 50m2 stops
Delta Logo
5:35 pm - 2:20 pmSOU-ORD
26h 45m1 stop
$774Delta
Find Deal
lun., mar. 23 - mar., mar. 31
Delta Logo
5:25 pm - 5:00 pmORD-SOU
18h 35m1 stop
Delta Logo
9:20 am - 2:20 pmSOU-ORD
11h 00m1 stop
$785Delta
Find Deal
lun., mar. 23 - mié., abr. 1
KLM Logo
4:25 pm - 8:50 amORD-SOU
10h 25m1 stop
KLM Logo
8:40 am - 2:20 pmSOU-ORD
11h 40m1 stop
$959KLM
Find Deal
vie., dic. 12 - vie., dic. 19
Multiple Airlines Logo
7:10 am - 2:50 pmORD-SOU
25h 40m3 stops
Multiple Airlines Logo
5:30 pm - 5:55 pmSOU-ORD
30h 25m2 stops
$1,296Multiple Airlines
Find Deal
vie., dic. 12 - vie., dic. 19
Multiple Airlines Logo
3:50 pm - 8:25 amORD-SOU
34h 35m3 stops
Multiple Airlines Logo
8:40 am - 5:55 pmSOU-ORD
15h 15m2 stops
$1,339Multiple Airlines
Find Deal
jue., dic. 25 - mié., dic. 31
British Airways Logo
11:38 am - 5:20 pmORD-SOU
23h 42m2 stops
British Airways Logo
12:25 pm - 7:15 pmSOU-ORD
12h 50m1 stop
$1,701British Airways
Find Deal
mar., feb. 10 - mar., mar. 3
KLM Logo
4:25 pm - 8:50 amORD-SOU
10h 25m1 stop
KLM Logo
9:25 am - 11:54 pmSOU-ORD
20h 29m2 stops
$2,004KLM
Find Deal
lun., feb. 16 - sáb., feb. 28
British Airways Logo
7:45 pm - 4:20 pmORD-SOU
15h 35m2 stops
British Airways Logo
9:10 am - 7:00 pmSOU-ORD
15h 50m1 stop
$2,171British Airways
Find Deal
mié., mar. 25 - dom., mar. 29

Aer Lingus flights from Illinois to Southampton

Our best Aer Lingus deals on Illinois to Southampton flight tickets
Aer Lingus
Dec 25
ORD3:50 pmChicago O'Hare Intl
10h 55m
1 stop
SOU8:45 amSouthampton Eastleigh
Dec 31
SOU12:25 pmSouthampton Eastleigh
11h 30m
1 stop
ORD5:55 pmChicago O'Hare Intl
$755
Find similar
Aer Lingus
Dec 12
ORD3:50 pmChicago O'Hare Intl
10h 55m
1 stop
SOU8:45 amSouthampton Eastleigh
Dec 19
SOU9:30 amSouthampton Eastleigh
34h 33m
2 stops
ORD2:03 pmChicago O'Hare Intl
$995
Find similar
Aer Lingus
Dec 12
ORD3:53 pmChicago O'Hare Intl
34h 52m
2 stops
SOU8:45 amSouthampton Eastleigh
Dec 19
SOU9:30 amSouthampton Eastleigh
34h 33m
2 stops
ORD2:03 pmChicago O'Hare Intl
$996
Find similar

Delta flights from Illinois to Southampton

Our best Delta deals on Illinois to Southampton flight tickets
Delta
Mar 23
ORD5:25 pmChicago O'Hare Intl
18h 35m
1 stop
SOU5:00 pmSouthampton Eastleigh
Mar 31
SOU5:35 pmSouthampton Eastleigh
26h 45m
1 stop
ORD2:20 pmChicago O'Hare Intl
$769
Find similar
Delta
Mar 23
ORD2:10 pmChicago O'Hare Intl
21h 50m
2 stops
SOU5:00 pmSouthampton Eastleigh
Mar 31
SOU5:35 pmSouthampton Eastleigh
26h 45m
1 stop
ORD2:20 pmChicago O'Hare Intl
$774
Find similar
Delta
Mar 23
ORD5:25 pmChicago O'Hare Intl
18h 35m
1 stop
SOU5:00 pmSouthampton Eastleigh
Apr 1
SOU9:20 amSouthampton Eastleigh
11h 00m
1 stop
ORD2:20 pmChicago O'Hare Intl
$785
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 octubre 30, 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

jue. 12/25

3:50 pm-8:45 am

1 stop10h 55m

Southampton Eastleigh

mié. 12/31

12:25 pm-5:55 pm

1 stop11h 30m

$755

ChicagoSouthampton

ORD - SOU

ORDSOU

Chicago O'Hare Intl

lun. 3/23

5:25 pm-5:00 pm

1 stop18h 35m

Southampton Eastleigh

mar. 3/31

5:35 pm-2:20 pm

1 stop26h 45m

$769

ChicagoSouthampton

ORD - SOU

ORDSOU

Chicago O'Hare Intl

lun. 3/23

2:10 pm-5:00 pm

2 stops21h 50m

Southampton Eastleigh

mar. 3/31

5:35 pm-2:20 pm

1 stop26h 45m

$774

ChicagoSouthampton

ORD - SOU

ORDSOU

Chicago O'Hare Intl

lun. 3/23

5:25 pm-5:00 pm

1 stop18h 35m

Southampton Eastleigh

mié. 4/1

9:20 am-2:20 pm

1 stop11h 00m

$785

ChicagoSouthampton

ORD - SOU

ORDSOU

Chicago O'Hare Intl

vie. 12/12

4:25 pm-8:50 am

1 stop10h 25m

Southampton Eastleigh

vie. 12/19

8:40 am-2:20 pm

1 stop11h 40m

$959

ChicagoSouthampton

ORD - SOU

ORDSOU

Chicago O'Hare Intl

vie. 12/12

7:10 am-2:50 pm

3 stops25h 40m

Southampton Eastleigh

vie. 12/19

5:30 pm-5:55 pm

2 stops30h 25m

$1,296

ChicagoSouthampton

ORD - SOU

ORDSOU

Chicago O'Hare Intl

jue. 12/25

3:50 pm-8:25 am

3 stops34h 35m

Southampton Eastleigh

mié. 12/31

8:40 am-5:55 pm

2 stops15h 15m

$1,339

ChicagoSouthampton

ORD - SOU

ORDSOU

Chicago O'Hare Intl

mar. 2/10

11:38 am-5:20 pm

2 stops23h 42m

Southampton Eastleigh

mar. 3/3

12:25 pm-7:15 pm

1 stop12h 50m

$1,701

ChicagoSouthampton

ORD - SOU

ORDSOU

Chicago O'Hare Intl

lun. 2/16

4:25 pm-8:50 am

1 stop10h 25m

Southampton Eastleigh

sáb. 2/28

9:25 am-11:54 pm

2 stops20h 29m

$2,004

ChicagoSouthampton

ORD - SOU

ORDSOU

Chicago O'Hare Intl

mié. 3/25

7:45 pm-4:20 pm

2 stops15h 35m

Southampton Eastleigh

dom. 3/29

9:10 am-7:00 pm

1 stop15h 50m

$2,171

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 11 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 day to depart on your flight to Southampton?

On average, the least expensive day to fly to Southampton from Illinois is on a Sunday. momondo users have found tickets for Sunday departures for as low as $803. However, this price may fluctuate depending on the airline, the season, and holidays. When flying out on a Saturday, the most expensive travel day of the week, you can expect to see flight prices from Illinois to Southampton for around $1,258.

What is the cheapest time of day to depart on your flight to Southampton?

Flying to Southampton from Illinois in the evening is the least expensive time of day to depart. momondo users have found prices as low as $768 when looking at flights departing in the evening. Flights to Southampton are more costly in the morning, with an average ticket price of $1,075. Departure times in the morning fall within the peak daily travel times, which is why tickets can be more expensive.

Cheap Illinois to Southampton flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from Illinois to Southampton

Direct flights

None
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 $623Free CancellationRating
7.2
1,361 reviews
Search Aer Lingus flights
KLMPriceFrom $903Free CancellationRating
7.7
1,406 reviews
Search KLM 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.

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