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Cheap flights from Southampton to Illinois from £326

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 19/4. Fares are subject to change and may not be available on all flights or dates of travel.
SOU — ORD
4 Mar — 11 Mar1
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 2 February 2026.

Sat 28/217:30
SOU
-
MDW
2 stops30h 07m
KLM
Sat 7/313:29
MDW
-
SOU
2 stops36h 51m
KLM
Deal found 31/1£670
Sat 28/209:25
SOU
-
ORD
2 stops16h 52m
KLM
Sat 7/314:05
ORD
-
SOU
2 stops36h 15m
KLM
Deal found 31/1£670
Thu 19/308:50
SOU
-
ORD
2 stops17h 59m
Delta
Thu 26/311:10
ORD
-
SOU
2 stops16h 10m
Delta
Deal found 2/2£676
Thu 19/318:05
SOU
-
ORD
1 stop26h 15m
KLM
Thu 26/310:40
ORD
-
SOU
2 stops16h 40m
KLM
Deal found 2/2£725
Wed 4/312:25
SOU
-
ORD
1 stop12h 50m
British Airways
Sun 8/316:50
ORD
-
SOU
1 stop10h 55m
British Airways
Deal found 31/1£728
Thu 5/320:10
SOU
-
ORD
1 stop29h 05m
British Airways
Mon 9/320:40
ORD
-
SOU
1 stop10h 15m
British Airways
Deal found 1/2£734
Thu 19/318:05
SOU
-
ORD
3 stops27h 20m
Multiple Airlines
Thu 26/307:15
ORD
-
SOU
3 stops29h 15m
Multiple Airlines
Deal found 2/2£779
Thu 19/308:50
SOU
-
MDW
2 stops18h 41m
Virgin Atlantic
Thu 26/312:47
MDW
-
SOU
2 stops23h 13m
Virgin Atlantic
Deal found 2/2£804

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 2 February 2026.

Round-trip from

£670

One-way from

£326

Popular in

July

Cheapest in

February

Average price

£423
KLM
  • KLM
  • 28/2-7/3
  • 4 total stops
  • 66h 58m total
  • Southampton to Illinois
Search Deals
19/4
  • 19/4
  • 3 total stops
  • 58h 35m total
  • Southampton to Illinois
Search Deals
Highest demand for flights based on searches. 14% potential increase in price (£62 potential increase over avg. return price).
Search Deals
Cheapest flight prices on average. 2% potential price decrease (£9 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 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 2 February 2026.
Use the filters below to find and compare flights from Southampton to Illinois that are best for you.

Fly from

Southampton

Fly to

Illinois

Route

Depart

Return

Price

SouthamptonChicago

SOU - MDW

SOUMDW

Southampton Eastleigh

Sat 28/2

17:30-17:37

2 stops30h 07m

Chicago Midway

Sat 7/3

13:29-08:20

2 stops36h 51m

£670

SouthamptonChicago

SOU - ORD

SOUORD

Southampton Eastleigh

Sat 28/2

09:25-20:17

2 stops16h 52m

Chicago O'Hare Intl

Sat 7/3

14:05-08:20

2 stops36h 15m

£670

SouthamptonChicago

SOU - ORD

SOUORD

Southampton Eastleigh

Thu 19/3

08:50-21:49

2 stops17h 59m

Chicago O'Hare Intl

Thu 26/3

11:10-08:20

2 stops16h 10m

£676

SouthamptonChicago

SOU - ORD

SOUORD

Southampton Eastleigh

Thu 19/3

18:05-15:20

1 stop26h 15m

Chicago O'Hare Intl

Thu 26/3

10:40-08:20

2 stops16h 40m

£725

SouthamptonChicago

SOU - ORD

SOUORD

Southampton Eastleigh

Wed 4/3

12:25-19:15

1 stop12h 50m

Chicago O'Hare Intl

Sun 8/3

16:50-08:45

1 stop10h 55m

£728

SouthamptonChicago

SOU - ORD

SOUORD

Southampton Eastleigh

Thu 5/3

20:10-19:15

1 stop29h 05m

Chicago O'Hare Intl

Mon 9/3

20:40-11:55

1 stop10h 15m

£734

SouthamptonChicago

SOU - ORD

SOUORD

Southampton Eastleigh

Thu 19/3

18:05-16:25

3 stops27h 20m

Chicago O'Hare Intl

Thu 26/3

07:15-17:30

3 stops29h 15m

£779

SouthamptonChicago

SOU - MDW

SOUMDW

Southampton Eastleigh

Thu 19/3

08:50-22:31

2 stops18h 41m

Chicago Midway

Thu 26/3

12:47-17:00

2 stops23h 13m

£804

SouthamptonChicago

SOU - ORD

SOUORD

Southampton Eastleigh

Sun 19/4

08:25-13:00

3 stops58h 35m

£326

SouthamptonChicago

SOU - ORD

SOUORD

Southampton Eastleigh

Sun 10/5

14:50-14:15

3 stops53h 25m

£371

Flights are sorted by cheapest return flights first.

Deals found on 2/2

Showing 1-10 of 17 results
1
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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, April is the cheapest month in which you can book a flight from Southampton to Illinois (average of £119). Flying from Southampton to Illinois in July is currently the most expensive (average of £493). 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 12h 50m. 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, April is the cheapest month in which you can book a flight from Southampton to Illinois (average of £119). Flying from Southampton to Illinois in July is currently the most expensive (average of £493). 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

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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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