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$641+ 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 11/5. Fares are subject to change and may not be available on all flights or dates of travel.
SOU — ORD
Oct 15 — Oct 221
Wed 10/15
Wed 10/22
1 adult, Economy
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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 September 15, 2025.

Round-trip from

$678
(KLM)

One-way from

$641
(Kiwi.com)

Popular in

July

Cheapest in

February

Average price

$593
From Southampton Eastleigh to Illinois
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One-way flight from Southampton Eastleigh to Illinois
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Highest demand for flights based on searches. 14% potential increase in price ($113 potential increase over avg. RT price).
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Cheapest flight prices on average. 2% potential price decrease ($17 potential savings vs. average RT price).
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Average for round-trip flights in September 2025
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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 September 15, 2025.

This KLM deal was found by Cheapflights users on 9/15. 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 KLM is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/306:05 pmSOU - ORD
1 stop26h 15mKLM
Thu 11/61:08 pmORD - SOU
2 stops12h 57mKLM
Deal found 9/15$678
This Trip.com deal was found by Cheapflights users on 9/15. 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 Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/308:50 amSOU - MDW
2 stops38h 05mKLM
Thu 11/61:08 pmMDW - SOU
2 stops12h 57mKLM
Deal found 9/15$714
This Mytrip deal was found by Cheapflights users on 9/15. 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.
Thu 10/308:10 pmSOU - ORD
2 stops29h 55mMultiple Airlines
Thu 11/66:50 pmORD - SOU
3 stops35h 05mMultiple Airlines
Deal found 9/15$798

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 September 15, 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 10/30

6:05 pm-3:20 pm

1 stop26h 15m

Chicago O'Hare Intl

Thu 11/6

1:08 pm-8:05 am

2 stops12h 57m

$678

SouthamptonChicago

SOU - MDW

SOUMDW

Southampton Eastleigh

Thu 10/30

8:50 am-5:55 pm

2 stops38h 05m

Chicago Midway

Thu 11/6

1:08 pm-8:05 am

2 stops12h 57m

$714

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

$727

SouthamptonChicago

SOU - MDW

SOUMDW

Southampton Eastleigh

Thu 3/5

6:05 pm-9:46 pm

2 stops33h 41m

Chicago Midway

Mon 3/9

1:00 pm-8:10 am

2 stops14h 10m

$733

SouthamptonChicago

SOU - ORD

SOUORD

Southampton Eastleigh

Thu 10/30

8:10 pm-9:05 pm

2 stops29h 55m

Chicago O'Hare Intl

Thu 11/6

6:50 pm-11:55 am

3 stops35h 05m

$798

SouthamptonChicago

SOU - ORD

SOUORD

Southampton Eastleigh

Sun 1/4

6:25 pm-6:45 pm

3 stops54h 20m

Chicago O'Hare Intl

Sun 1/11

9:45 pm-8:00 pm

2 stops16h 15m

$2,267

SouthamptonChicago

SOU - ORD

SOUORD

Southampton Eastleigh

Mon 1/5

6:00 pm-6:45 pm

2 stops30h 45m

Chicago O'Hare Intl

Sun 1/11

6:45 pm-8:00 pm

2 stops19h 15m

$2,270

SouthamptonChicago

SOU - ORD

SOUORD

Southampton Eastleigh

Sat 1/3

9:10 am-6:45 pm

2 stops15h 35m

Chicago O'Hare Intl

Sun 1/11

6:45 pm-4:00 pm

2 stops15h 15m

$2,311

SouthamptonChicago

SOU - ORD

SOUORD

Southampton Eastleigh

Wed 11/5

7:00 pm-3:15 pm

3 stops50h 15m

$641

SouthamptonChicago

SOU - ORD

SOUORD

Southampton Eastleigh

Wed 11/5

8:40 am-2:20 pm

1 stop11h 40m

$1,879

Flights are sorted by cheapest round-trip flights first.

Deals found on 9/14

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, August is the cheapest month in which you can book a flight from Southampton to Illinois (average of $245). Flying from Southampton to Illinois in March is currently the most expensive (average of $321). 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, August is the cheapest month in which you can book a flight from Southampton to Illinois (average of $245). Flying from Southampton to Illinois in March is currently the most expensive (average of $321). 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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