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Cheap flights from Illinois to Southampton from £261

This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 25/5. Fares are subject to change and may not be available on all flights or dates of travel.
ORD — SOU
30 Mar — 6 Apr1
1 adult
1 adult, Economy, 0 bags

Cheap flight deals from Illinois to Southampton

Enter your travel dates to find the best prices.

Cheapest flights from Illinois to Southampton
Explore the most affordable flight options available from Illinois to Southampton. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 28 February 2026.

Sun 8/317:25
ORD
-
SOU
1 stop18h 40m
Delta
Tue 17/317:35
SOU
-
ORD
1 stop26h 45m
Delta
Deal found 24/2£581
Mon 16/317:25
ORD
-
SOU
1 stop9h 55m
Delta
Wed 25/308:50
SOU
-
ORD
1 stop11h 30m
Delta
Deal found 25/2£582
Tue 10/307:10
ORD
-
SOU
2 stops20h 10m
Delta
Tue 17/317:35
SOU
-
ORD
1 stop26h 45m
Delta
Deal found 24/2£585
Tue 25/816:20
ORD
-
SOU
1 stop10h 25m
Delta
Tue 1/909:05
SOU
-
ORD
1 stop11h 10m
Delta
Deal found 24/2£585
Sun 8/317:25
ORD
-
SOU
1 stop9h 55m
Delta
Thu 19/308:50
SOU
-
ORD
2 stops17h 20m
Delta
Deal found 24/2£588
Wed 11/305:30
ORD
-
SOU
2 stops21h 50m
Delta
Thu 19/308:50
SOU
-
ORD
2 stops16h 27m
Delta
Deal found 24/2£592
Wed 26/808:55
ORD
-
SOU
2 stops17h 50m
Delta
Wed 2/917:20
SOU
-
ORD
2 stops30h 28m
Delta
Deal found 24/2£596
Sun 12/416:20
ORD
-
SOU
1 stop10h 15m
Delta
Wed 22/409:05
SOU
-
ORD
1 stop11h 25m
Delta
Deal found 28/2£600
Wed 26/808:55
ORD
-
SOU
2 stops17h 50m
Delta
Tue 1/909:05
SOU
-
ORD
2 stops18h 31m
Delta
Deal found 24/2£602
Sun 12/408:55
ORD
-
SOU
2 stops25h 55m
Delta
Thu 23/417:20
SOU
-
ORD
1 stop26h 55m
Delta
Deal found 28/2£604
Sun 9/816:20
ORD
-
SOU
1 stop10h 25m
Delta
Mon 24/818:05
SOU
-
ORD
2 stops28h 31m
Delta
Deal found 27/2£608
Mon 10/807:00
ORD
-
SOU
2 stops19h 45m
Delta
Mon 24/818:05
SOU
-
ORD
2 stops28h 31m
Delta
Deal found 27/2£611

Find flight deals from Illinois to Southampton

Keep the following information in mind while searching for Illinois to Southampton flight deals. Data was last updated 28 February 2026.

Round-trip from

£582

One-way from

£261

Popular in

June

Cheapest in

September

Average price

£492
Delta
  • Delta
  • 18/3-25/3
  • 2 total stops
  • 21h 25m total
  • Illinois to Southampton
Search Deals
25/5
  • 25/5
  • 2 total stops
  • 16h 15m total
  • Illinois to Southampton
Search Deals
Highest demand for flights based on searches. 21% potential increase in price (£114 potential increase over avg. return price).
Search Deals
Cheapest flight prices on average. 5% potential price decrease (£20 potential savings vs. average return price).
Search Deals
Average for round-trip flights in February 2026
Search Deals

Cheapflights 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, Cheapflights users made 858,174 searches. Data last updated 28 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

Wed 11/3

05:30-08:20

2 stops21h 50m

Southampton Eastleigh

Tue 17/3

17:35-15:20

1 stop26h 45m

£585

ChicagoSouthampton

ORD - SOU

ORDSOU

Chicago O'Hare Intl

Tue 25/8

16:20-08:45

1 stop10h 25m

Southampton Eastleigh

Tue 1/9

09:05-21:36

2 stops18h 31m

£592

ChicagoSouthampton

ORD - SOU

ORDSOU

Chicago O'Hare Intl

Tue 14/4

19:09-16:50

2 stops15h 41m

Southampton Eastleigh

Thu 23/4

17:20-14:15

1 stop26h 55m

£604

ChicagoSouthampton

ORD - SOU

ORDSOU

Chicago O'Hare Intl

Mon 13/4

16:50-16:50

1 stop18h 00m

Southampton Eastleigh

Fri 24/4

17:20-14:15

1 stop26h 55m

£637

ChicagoSouthampton

ORD - SOU

ORDSOU

Chicago O'Hare Intl

Thu 16/4

16:20-08:35

1 stop10h 15m

Southampton Eastleigh

Wed 22/4

17:20-14:15

1 stop26h 55m

£637

ChicagoSouthampton

ORD - SOU

ORDSOU

Chicago O'Hare Intl

Fri 17/4

07:10-08:45

2 stops19h 35m

Southampton Eastleigh

Thu 23/4

17:20-14:15

1 stop26h 55m

£684

ChicagoSouthampton

MDW - SOU

MDWSOU

Chicago Midway

Tue 14/4

17:21-16:50

2 stops17h 29m

Southampton Eastleigh

Tue 21/4

09:05-18:36

2 stops15h 31m

£719

ChicagoSouthampton

ORD - SOU

ORDSOU

Chicago O'Hare Intl

Mon 24/8

12:15-08:45

2 stops14h 30m

Southampton Eastleigh

Mon 31/8

09:05-14:30

1 stop11h 25m

£748

ChicagoSouthampton

ORD - SOU

ORDSOU

Chicago O'Hare Intl

Sat 1/8

10:40-08:45

2 stops16h 05m

Southampton Eastleigh

Sat 22/8

09:15-22:06

2 stops18h 51m

£771

ChicagoSouthampton

ORD - SOU

ORDSOU

Chicago O'Hare Intl

Tue 25/8

16:20-08:45

1 stop10h 25m

Southampton Eastleigh

Mon 31/8

09:05-19:43

2 stops16h 38m

£786

Flights are sorted by cheapest return flights first.

Deals found on 26/2

Showing 1-10 of 36 resultsSorted by cheapest first
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Best time to book a flight from Illinois to Southampton

Have a flexible travel schedule? Discover the best time to fly to Southampton from Illinois with our price prediction graph.
Estimated return price
Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.

Cheapflights Insights

Everything you need to know about your flight from Illinois to Southampton

What is the cheapest month to book a flight from Illinois to Southampton?

Currently, May is the cheapest month in which you can book a flight from Illinois to Southampton (average of £290). Flying from Illinois to Southampton in June is currently the most expensive (average of £659). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

Related info for your journey

Find useful and relevant information for your journey from Illinois to Southampton. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • What airport do you fly into for flights to Southampton from Illinois?

    Most people fly into Southampton Eastleigh (SOU) if they book a flight to Southampton from Illinois. Eastleigh is conveniently located just 3.5 mi from Southampton’s city center.

  • How long is the flight from Illinois to Southampton?

    A quick flight from Illinois to Southampton can take about 15h 34m. Delta provides one of the quickest options available for as low as £964. Illinois and Southampton are separated by a distance of 3924 mi. When browsing for deals, the options you’ll see will be for both direct flights and flights with stops.

  • Can I find deals for flights from Illinois to Southampton that include hotel bookings?

    Yes. In addition to deals on Illinois to Southampton flights, Cheapflights offers holiday packages that include both flights and hotel.

  • How can I find direct flights from Illinois to Southampton?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Illinois to Southampton.

  • Can I find deals for business class flights from Illinois to Southampton?

    Yes. Cheapflights offers flight deals from Illinois to Southampton by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

  • What is the cheapest month to book a flight from Illinois to Southampton?

    Currently, May is the cheapest month in which you can book a flight from Illinois to Southampton (average of £290). Flying from Illinois to Southampton in June is currently the most expensive (average of £659). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

See more FAQs

Browse thousands of different options on Cheapflights for your next trip

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Alternative routes for Illinois to Southampton

See prices for flight routes from nearby airports that may be better suited for you.
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Fly with Cheapflights

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How does Cheapflights help users find flights from Illinois to Southampton?

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Why should you use Cheapflights to find cheap flight tickets from Illinois to Southampton?

By finding flights from multiple airlines and providers at completely no cost, Cheapflights helps millions of users like you annually find the best flights to Southampton from Illinois.

Can Cheapflights find flights from Illinois to Southampton with no change fees?

Need flexible booking options for your flight to Southampton from Illinois? Don’t worry, Cheapflights have you covered. Use our search filter to only show flights with no change fees.

Can Cheapflights notify me if prices for flights from Illinois to Southampton become cheaper?

Yes, Cheapflights offers price alerts on Illinois to Southampton flights so you can book your travel at the perfect time. Price Alerts can be enabled by clicking the bell icon next to the flight deals above and providing your email address where you want to receive the alerts.

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