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Cheap flights from Southampton to Illinois from £472

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 5/11. Fares are subject to change and may not be available on all flights or dates of travel.
SOU — ORD
16 Oct — 23 Oct1
1 adult
1 adult, Economy

Cheap flight deals from Southampton to Illinois

Keep the following information in mind while searching for Southampton to Illinois flight deals. Data was last updated 16 September 2025.

Round-trip from

£499

One-way from

£472

Popular in

July

Cheapest in

February

Average price

£436
KLM
  • KLM
  • 30/10-6/11
  • 3 total stops
  • 39h 12m total
  • Southampton to Illinois
Search Deals
5/11
  • 5/11
  • 3 total stops
  • 50h 15m total
  • Southampton to Illinois
Search Deals
Highest demand for flights based on searches. 14% potential increase in price (£61 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 September 2025
Search Deals

Find flight deals from Southampton to Illinois

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 16 September 2025.

Thu 30/1018:05SOU - ORD
1 stop26h 15mKLM
Thu 6/1113:08ORD - SOU
2 stops12h 57mKLM
Deal found 15/9£499
Thu 30/1008:50SOU - MDW
2 stops38h 05mKLM
Thu 6/1113:08MDW - SOU
2 stops12h 57mKLM
Deal found 15/9£525
Thu 30/1020:10SOU - ORD
2 stops29h 55mMultiple Airlines
Thu 6/1118:50ORD - SOU
3 stops35h 05mMultiple Airlines
Deal found 15/9£587

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 16 September 2025.
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 - ORD

SOUORD

Southampton Eastleigh

Thu 30/10

18:05-15:20

1 stop26h 15m

Chicago O'Hare Intl

Thu 6/11

13:08-08:05

2 stops12h 57m

£499

SouthamptonChicago

SOU - MDW

SOUMDW

Southampton Eastleigh

Thu 30/10

08:50-17:55

2 stops38h 05m

Chicago Midway

Thu 6/11

13:08-08:05

2 stops12h 57m

£525

SouthamptonChicago

SOU - ORD

SOUORD

Southampton Eastleigh

Thu 5/3

18:05-14:20

1 stop26h 15m

Chicago O'Hare Intl

Mon 9/3

17:25-17:00

1 stop18h 35m

£535

SouthamptonChicago

SOU - MDW

SOUMDW

Southampton Eastleigh

Thu 5/3

18:05-21:46

2 stops33h 41m

Chicago Midway

Mon 9/3

13:00-08:10

2 stops14h 10m

£539

SouthamptonChicago

SOU - ORD

SOUORD

Southampton Eastleigh

Thu 30/10

20:10-21:05

2 stops29h 55m

Chicago O'Hare Intl

Thu 6/11

18:50-11:55

3 stops35h 05m

£587

SouthamptonChicago

SOU - ORD

SOUORD

Southampton Eastleigh

Sun 4/1

18:25-18:45

3 stops54h 20m

Chicago O'Hare Intl

Sun 11/1

21:45-20:00

2 stops16h 15m

£1,668

SouthamptonChicago

SOU - ORD

SOUORD

Southampton Eastleigh

Mon 5/1

18:00-18:45

2 stops30h 45m

Chicago O'Hare Intl

Sun 11/1

18:45-20:00

2 stops19h 15m

£1,670

SouthamptonChicago

SOU - ORD

SOUORD

Southampton Eastleigh

Sat 3/1

09:10-18:45

2 stops15h 35m

Chicago O'Hare Intl

Sun 11/1

18:45-16:00

2 stops15h 15m

£1,701

SouthamptonChicago

SOU - ORD

SOUORD

Southampton Eastleigh

Wed 5/11

19:00-15:15

3 stops50h 15m

£472

SouthamptonChicago

SOU - ORD

SOUORD

Southampton Eastleigh

Wed 5/11

08:40-14:20

1 stop11h 40m

£1,383

Flights are sorted by cheapest return flights first.

Deals found on 14/9

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, January is the cheapest month in which you can book a flight from Southampton to Illinois (average of £595). Flying from Southampton to Illinois in July is currently the most expensive (average of £843). 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 26h 15m. 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, January is the cheapest month in which you can book a flight from Southampton to Illinois (average of £595). Flying from Southampton to Illinois in July is currently the most expensive (average of £843). 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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