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$570+ Cheap flights from Southampton (SOU) to Illinois

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 3/11. Fares are subject to change and may not be available on all flights or dates of travel.
SOU — ORD
Dec 6 — Dec 131
Sat 12/6
Sat 12/13
1 adult, Economy
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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 November 6, 2025.

This Mytrip deal was found by Cheapflights users on 11/6. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 12/216:05 pmSOU - ORD
3 stops29h 15mMultiple Airlines
Sun 12/286:30 pmORD - SOU
2 stops19h 10mMultiple Airlines
Deal found 11/6$930
This ChecknFly deal was found by Cheapflights users on 11/6. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure ChecknFly is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 12/218:10 pmSOU - ORD
1 stop23h 50mAer Lingus
Sun 12/283:50 pmORD - SOU
1 stop10h 55mAer Lingus
Deal found 11/6$1,054
This Expedia deal was found by Cheapflights users on 11/6. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 12/216:05 pmSOU - MDW
2 stops29h 14mMultiple Airlines
Sun 12/286:08 pmMDW - SOU
2 stops32h 02mMultiple Airlines
Deal found 11/6$1,259
This British Airways deal was found by Cheapflights users on 11/6. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure British Airways is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 11/67:55 pmSOU - ORD
2 stops23h 55mBritish Airways
Sat 9/268:50 pmORD - SOU
1 stop16h 40mBritish Airways
Deal found 11/6$1,817

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 November 6, 2025.

Most accurate provider

CheapOair
3 stars

Most trusted provider

CheapOair
3 stars

Round-trip from

$839
(TravelUp)

One-way from

$570
(British Airways)

Popular in

July

Cheapest in

February

Average price

$644
Provider with most accurate pricing for London (LON)-Chicago (CHI) flight deals.
Search Deals
Provider most trusted by Cheapflights users for London (LON)-Chicago (CHI) flights.
Search Deals
From Southampton Eastleigh to Illinois
Search Deals
One-way flight from Southampton Eastleigh to Illinois
Search Deals
Highest demand for flights based on searches. 13% potential increase in price ($108 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 2% potential price decrease ($16 potential savings vs. average RT price).
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Average for round-trip flights in November 2025
Search Deals

Cheapflights Fare Finder

 
Customize 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 2,558,603 searches. Data last updated November 6, 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 3/5

6:05 pm-2:20 pm

1 stop26h 15m

Chicago O'Hare Intl

Mon 3/9

5:25 pm-5:00 pm

1 stop18h 35m

$866

SouthamptonChicago

SOU - MDW

SOUMDW

Southampton Eastleigh

Thu 3/5

6:05 pm-5:45 pm

2 stops29h 40m

Chicago Midway

Mon 3/9

5:25 pm-5:00 pm

2 stops18h 35m

$873

SouthamptonChicago

SOU - ORD

SOUORD

Southampton Eastleigh

Sun 12/21

6:05 pm-5:20 pm

3 stops29h 15m

Chicago O'Hare Intl

Sun 12/28

6:30 pm-7:40 pm

2 stops19h 10m

$930

SouthamptonChicago

SOU - ORD

SOUORD

Southampton Eastleigh

Sun 1/25

9:30 am-8:00 pm

2 stops16h 30m

Chicago O'Hare Intl

Mon 2/2

5:10 pm-4:00 pm

2 stops16h 50m

$960

SouthamptonChicago

SOU - MDW

SOUMDW

Southampton Eastleigh

Sun 12/21

6:05 pm-5:19 pm

2 stops29h 14m

Chicago Midway

Sun 12/28

6:08 pm-8:10 am

2 stops32h 02m

$1,259

SouthamptonChicago

SOU - ORD

SOUORD

Southampton Eastleigh

Wed 3/11

12:25 pm-6:55 pm

1 stop11h 30m

$570

SouthamptonChicago

SOU - ORD

SOUORD

Southampton Eastleigh

Sat 1/31

9:30 am-8:00 pm

2 stops16h 30m

$660

SouthamptonChicago

SOU - ORD

SOUORD

Southampton Eastleigh

Thu 3/12

9:30 am-6:55 pm

1 stop14h 25m

$661

SouthamptonChicago

SOU - ORD

SOUORD

Southampton Eastleigh

Wed 12/31

12:25 pm-5:55 pm

1 stop11h 30m

$1,061

SouthamptonChicago

SOU - ORD

SOUORD

Southampton Eastleigh

Thu 12/18

7:55 pm-6:45 pm

2 stops28h 50m

$1,392

Flights are sorted by cheapest round-trip flights first.

Deals found on 11/6

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 round-trip 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, September is the cheapest month in which you can book a flight from Southampton to Illinois (average of $204). Flying from Southampton to Illinois in July is currently the most expensive (average of $673). 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) is the airport you will fly out of if you book a flight from Southampton to Illinois. It is only a 3.5 mi journey to Eastleigh (SOU) from Southampton’s city center.

  • How long is the flight from Southampton to Illinois?

    Departing from Southampton to Illinois will take you 26h 15m. Southampton and Illinois are separated by a distance of 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 vacation 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, September is the cheapest month in which you can book a flight from Southampton to Illinois (average of $204). Flying from Southampton to Illinois in July is currently the most expensive (average of $673). 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

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