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Cheap flights from Southampton to Illinois from £375

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 10/5. Fares are subject to change and may not be available on all flights or dates of travel.
SOU — ORD
18 Apr — 25 Apr1
1 adult
1 adult, Economy, 0 bags

Cheap flight deals from Southampton to Illinois

Enter your travel dates to find the best prices.

Cheapest flights from Southampton to Illinois
Explore the most affordable flight options available from Southampton to Illinois. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 19 March 2026.

Sat 2/509:15
SOU
-
ORD
1 stop11h 00m
Virgin Atlantic
Sat 9/507:00
ORD
-
SOU
2 stops19h 45m
Virgin Atlantic
Deal found 18/3£745
Sat 2/517:20
SOU
-
ORD
1 stop26h 55m
KLM
Sat 9/516:20
ORD
-
SOU
1 stop10h 25m
KLM
Deal found 18/3£746
Tue 30/617:20
SOU
-
ORD
1 stop27h 10m
Delta
Thu 30/707:30
ORD
-
SOU
2 stops19h 15m
Delta
Deal found 14/3£747
Sat 2/509:15
SOU
-
ORD
2 stops18h 42m
Delta
Sat 9/511:00
ORD
-
SOU
2 stops15h 45m
Delta
Deal found 18/3£749
Wed 1/709:05
SOU
-
ORD
2 stops18h 31m
Delta
Thu 30/710:40
ORD
-
SOU
2 stops16h 05m
Delta
Deal found 14/3£751
Fri 1/509:20
SOU
-
ORD
1 stop15h 55m
Aer Lingus
Fri 8/521:00
ORD
-
SOU
1 stop16h 30m
Aer Lingus
Deal found 17/3£761
Thu 23/420:00
SOU
-
ORD
1 stop24h 00m
British Airways
Mon 27/415:45
ORD
-
SOU
1 stop10h 55m
British Airways
Deal found 18/3£774
Wed 1/709:05
SOU
-
ORD
1 stop11h 25m
Delta
Fri 31/710:10
ORD
-
SOU
2 stops16h 35m
Delta
Deal found 14/3£776
Fri 1/520:00
SOU
-
ORD
1 stop24h 00m
Multiple Airlines
Fri 8/508:31
ORD
-
SOU
2 stops26h 19m
Multiple Airlines
Deal found 17/3£777
Sat 4/709:15
SOU
-
ORD
2 stops18h 51m
Delta
Mon 27/712:15
ORD
-
SOU
2 stops14h 30m
Delta
Deal found 14/3£781
Sat 2/509:15
SOU
-
MDW
2 stops15h 21m
Delta
Sat 9/509:22
MDW
-
SOU
2 stops17h 23m
Delta
Deal found 18/3£787
Fri 17/417:20
SOU
-
ORD
1 stop31h 55m
British Airways
Mon 20/421:00
ORD
-
SOU
1 stop16h 30m
British Airways
Deal found 15/3£792

Find flight deals from Southampton to Illinois

Keep the following information in mind while searching for Southampton to Illinois flight deals. Data was last updated 19 March 2026.

Round-trip from

£745

One-way from

£375

Popular in

July

Cheapest in

September

Average price

£563
Virgin Atlantic
  • Virgin Atlantic
  • 2/5-9/5
  • 3 total stops
  • 30h 45m total
  • Southampton to Illinois
Search Deals
10/5
  • 10/5
  • 3 total stops
  • 52h 20m total
  • Southampton to Illinois
Search Deals
Highest demand for flights based on searches. 12% potential increase in price (£56 potential increase over avg. return price).
Search Deals
Cheapest flight prices on average. 2% potential price decrease (£10 potential savings vs. average return price).
Search Deals
Average for round-trip flights in March 2026
Search Deals

Cheapflights Fare Finder

 
Customise your flight search to find flights from Southampton to Illinois 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 19 March 2026.
Use the filters below to find and compare flights from Southampton to Illinois that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest return flight

SouthamptonChicago

SOU - ORD

SOUORD

Southampton Eastleigh

Sat 2/5

17:20-14:15

1 stop26h 55m

Chicago O'Hare Intl

Sat 9/5

16:20-08:45

1 stop10h 25m

£746

SouthamptonChicago

SOU - ORD

SOUORD

Southampton Eastleigh

Tue 30/6

17:20-14:30

1 stop27h 10m

Chicago O'Hare Intl

Thu 30/7

07:30-08:45

2 stops19h 15m

£747

SouthamptonChicago

SOU - ORD

SOUORD

Southampton Eastleigh

Thu 23/4

20:00-14:00

1 stop24h 00m

Chicago O'Hare Intl

Mon 27/4

15:45-08:40

1 stop10h 55m

£774
Fastest return journey

SouthamptonChicago

SOU - ORD

SOUORD

Southampton Eastleigh

Wed 1/7

09:05-14:30

1 stop11h 25m

Chicago O'Hare Intl

Fri 31/7

16:20-08:45

1 stop10h 25m

£776

SouthamptonChicago

SOU - ORD

SOUORD

Southampton Eastleigh

Wed 1/7

09:05-14:30

1 stop11h 25m

Chicago O'Hare Intl

Sun 2/8

07:30-08:45

2 stops19h 15m

£776

SouthamptonChicago

SOU - ORD

SOUORD

Southampton Eastleigh

Fri 1/5

20:00-14:00

1 stop24h 00m

Chicago O'Hare Intl

Fri 8/5

08:31-16:50

2 stops26h 19m

£777

SouthamptonChicago

SOU - ORD

SOUORD

Southampton Eastleigh

Sat 4/7

09:15-22:06

2 stops18h 51m

Chicago O'Hare Intl

Thu 30/7

16:20-08:45

1 stop10h 25m

£781

SouthamptonChicago

SOU - MDW

SOUMDW

Southampton Eastleigh

Sat 2/5

09:15-18:36

2 stops15h 21m

Chicago Midway

Sat 9/5

09:22-08:45

2 stops17h 23m

£787

SouthamptonChicago

SOU - ORD

SOUORD

Southampton Eastleigh

Fri 17/4

20:00-14:00

1 stop24h 00m

Chicago O'Hare Intl

Mon 20/4

21:00-19:30

1 stop16h 30m

£792

SouthamptonChicago

SOU - MDW

SOUMDW

Southampton Eastleigh

Fri 1/5

17:20-17:58

2 stops30h 38m

Chicago Midway

Fri 8/5

17:10-16:50

2 stops17h 40m

£797

Flights are sorted by cheapest return flights first.

Deals found on 17/3

Showing 1-10 of 21 resultsSorted by cheapest first
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Best time to book a flight from Southampton to Illinois

Have a flexible travel schedule? Discover the best time to fly to Illinois from Southampton 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 Southampton to Illinois

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

Currently, December is the cheapest month in which you can book a flight from Southampton to Illinois (average of £220). Flying from Southampton to Illinois in July is currently the most expensive (average of £494). 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 Southampton to Illinois. 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 from for flights from Southampton to Illinois?

    Southampton Eastleigh (SOU), located 3.5 mi from the city center, is the airport you fly out of when you book flights from Southampton to Illinois.

  • How long is the flight from Southampton to Illinois?

    Departing from Southampton to Illinois will take you 24h. The distance between Southampton and Illinois is about 3921 mi. This flight may include one or multiple stops.

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

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

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

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

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

    Yes. Cheapflights offers flight deals from Southampton to Illinois 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 Southampton to Illinois?

    Currently, December is the cheapest month in which you can book a flight from Southampton to Illinois (average of £220). Flying from Southampton to Illinois in July is currently the most expensive (average of £494). 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 Southampton to Illinois

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 Southampton to Illinois?

Cheapflights helps you search for flights from Southampton to Illinois via 900+ travel sites so you don’t have to. After performing a flight search, users can also filter their flight selection by filtering for price, number of stops, airlines, and so on.

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

Cheapflights helps you find that perfect flight to Illinois from Southampton by searching from hundreds of airlines and agencies you know and love. We are also free to use, in case you were wondering!

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

Users can book flights with no change fees policies with our dedicated filters. Book flights from Southampton to Illinois flexibly with Cheapflights today.

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

Not ready to book yet? You can track prices for flights from Southampton to Illinois on Cheapflights with our Price Alert feature and get notified when better prices are available.

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