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Cheap flights from Southampton to Illinois from £514

This is the cheapest retur flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 2/10. Fares are subject to change and may not be available on all flights or dates of travel.
SOU — ORD
24 Aug — 31 Aug1
1 adult

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 19 August 2025.

Round-trip from

£514

Popular in

July

Cheapest in

February

Average price

£623
Aer Lingus
  • Aer Lingus
  • 2/10-9/10
  • 2 total stops
  • 26h 15m total
  • Southampton to Illinois
Search Deals
Highest demand for flights based on searches. 13% 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 August 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 19 August 2025.

Thu 2/1009:40SOU - ORD
1 stop15h 20mAer Lingus
Thu 9/1015:45ORD - SOU
1 stop10h 55mAer Lingus
Deal found 18/8£514
Thu 2/1020:00SOU - ORD
2 stops26h 30mMultiple Airlines
Thu 9/1018:00ORD - SOU
2 stops18h 55mMultiple Airlines
Deal found 18/8£528
Fri 3/1009:40SOU - ORD
1 stop12h 05mAer Lingus
Fri 10/1021:15ORD - SOU
1 stop12h 30mAer Lingus
Deal found 19/8£529
Wed 1/1009:20SOU - ORD
1 stop11h 20mKLM
Wed 8/1016:40ORD - SOU
1 stop18h 20mKLM
Deal found 17/8£530
Wed 1/1009:20SOU - MDW
2 stops15h 15mDelta
Wed 8/1009:20MDW - SOU
2 stops17h 25mDelta
Deal found 17/8£535
Thu 4/909:20SOU - ORD
1 stop10h 50mDelta
Tue 9/910:15ORD - SOU
2 stops16h 30mDelta
Deal found 19/8£560
Thu 2/1017:35SOU - ORD
1 stop26h 35mKLM
Thu 9/1013:08ORD - SOU
2 stops13h 37mKLM
Deal found 18/8£561
Thu 4/909:20SOU - MDW
2 stops18h 06mDelta
Tue 9/909:30MDW - SOU
2 stops17h 15mDelta
Deal found 19/8£564
Thu 2/1017:35SOU - MDW
2 stops31h 00mVirgin Atlantic
Thu 9/1010:35MDW - SOU
2 stops16h 10mVirgin Atlantic
Deal found 18/8£574
Fri 3/1009:20SOU - ORD
1 stop10h 50mDelta
Fri 10/1010:25ORD - SOU
2 stops16h 20mDelta
Deal found 19/8£590
Mon 6/1017:35SOU - ORD
1 stop26h 35mVirgin Atlantic
Sun 12/1016:15ORD - SOU
1 stop10h 30mVirgin Atlantic
Deal found 18/8£591
Fri 3/1017:35SOU - MDW
2 stops33h 35mKLM
Fri 10/1009:35MDW - SOU
2 stops17h 10mKLM
Deal found 19/8£754

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 August 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 2/10

09:40-19:00

1 stop15h 20m

Chicago O'Hare Intl

Thu 9/10

15:45-08:40

1 stop10h 55m

£514

SouthamptonChicago

SOU - ORD

SOUORD

Southampton Eastleigh

Thu 2/10

20:00-16:30

2 stops26h 30m

Chicago O'Hare Intl

Thu 9/10

18:00-18:55

2 stops18h 55m

£528

SouthamptonChicago

SOU - ORD

SOUORD

Southampton Eastleigh

Fri 3/10

09:40-15:45

1 stop12h 05m

Chicago O'Hare Intl

Fri 10/10

21:15-15:45

1 stop12h 30m

£529

SouthamptonChicago

SOU - ORD

SOUORD

Southampton Eastleigh

Wed 1/10

09:20-14:40

1 stop11h 20m

Chicago O'Hare Intl

Wed 8/10

16:40-17:00

1 stop18h 20m

£530

SouthamptonChicago

SOU - MDW

SOUMDW

Southampton Eastleigh

Wed 1/10

09:20-18:35

2 stops15h 15m

Chicago Midway

Wed 8/10

09:20-08:45

2 stops17h 25m

£535

SouthamptonChicago

SOU - ORD

SOUORD

Southampton Eastleigh

Thu 4/9

09:20-14:10

1 stop10h 50m

Chicago O'Hare Intl

Tue 9/9

10:15-08:45

2 stops16h 30m

£560

SouthamptonChicago

SOU - ORD

SOUORD

Southampton Eastleigh

Thu 4/9

09:20-14:10

1 stop10h 50m

Chicago O'Hare Intl

Tue 9/9

16:15-17:00

1 stop18h 45m

£560

SouthamptonChicago

SOU - ORD

SOUORD

Southampton Eastleigh

Thu 2/10

17:35-14:10

1 stop26h 35m

Chicago O'Hare Intl

Thu 9/10

13:08-08:45

2 stops13h 37m

£561

SouthamptonChicago

SOU - MDW

SOUMDW

Southampton Eastleigh

Thu 4/9

09:20-21:26

2 stops18h 06m

Chicago Midway

Tue 9/9

09:30-08:45

2 stops17h 15m

£564

SouthamptonChicago

SOU - MDW

SOUMDW

Southampton Eastleigh

Thu 2/10

17:35-18:35

2 stops31h 00m

Chicago Midway

Thu 9/10

10:35-08:45

2 stops16h 10m

£574

Flights are sorted by cheapest return flights first.

Deals found on 18/8

Showing 1-10 of 13 results
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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, 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 11h 20m. 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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How does Cheapflights help users find flights from Southampton to Illinois?

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

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

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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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