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Cheap flights from Illinois to Southampton from £254

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 29/9. Fares are subject to change and may not be available on all flights or dates of travel.
ORD — SOU
18 Oct — 25 Oct1
1 adult
1 adult, Economy

Cheap flight deals from Illinois to Southampton

Keep the following information in mind while searching for Illinois to Southampton flight deals. Data was last updated 18 September 2025.

Round-trip from

£539

One-way from

£254

Popular in

June

Cheapest in

February

Average price

£483
Delta
  • Delta
  • 3/12-9/12
  • 2 total stops
  • 36h 45m total
  • Illinois to Southampton
Search Deals
29/9
  • 29/9
  • 3 total stops
  • 43h 35m total
  • Illinois to Southampton
Search Deals
Highest demand for flights based on searches. 21% potential increase in price (£111 potential increase over avg. return price).
Search Deals
Cheapest flight prices on average. 5% potential price decrease (£20 potential savings vs. average return price).
Search Deals
Average for round-trip flights in September 2025
Search Deals

Find flight deals from Illinois to Southampton

Cheapest flights from Illinois to Southampton
Explore the most affordable flight options available from Illinois to Southampton. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 18 September 2025.

Wed 3/1216:25ORD - SOU
1 stop9h 55mDelta
Tue 9/1217:30SOU - ORD
1 stop26h 50mDelta
Deal found 16/9£539
Wed 3/1216:25ORD - SOU
1 stop9h 55mDelta
Wed 10/1217:30SOU - ORD
2 stops30h 16mDelta
Deal found 16/9£574
Wed 3/1216:25ORD - SOU
1 stop9h 55mDelta
Sun 7/1209:30SOU - ORD
1 stop10h 50mDelta
Deal found 16/9£576
Fri 31/1013:25ORD - SOU
2 stops14h 25mKLM
Fri 7/1108:40SOU - ORD
1 stop11h 40mKLM
Deal found 16/9£580
Wed 3/1207:00ORD - SOU
2 stops19h 20mDelta
Mon 8/1218:05SOU - ORD
2 stops29h 41mDelta
Deal found 16/9£582
Fri 5/1216:25ORD - SOU
1 stop10h 25mDelta
Sun 7/1218:05SOU - ORD
1 stop26h 15mDelta
Deal found 16/9£613
Fri 7/1113:08ORD - SOU
2 stops13h 42mKLM
Sun 9/1109:30SOU - ORD
1 stop10h 50mKLM
Deal found 17/9£616
Sun 28/1216:25ORD - SOU
1 stop19h 00mDelta
Wed 7/109:25SOU - ORD
1 stop10h 55mDelta
Deal found 17/9£627
Mon 29/909:20MDW - SOU
2 stops17h 25mDelta
Thu 2/1009:20SOU - MDW
2 stops15h 15mDelta
Deal found 16/9£1,404
Sat 1/1110:40MDW - SOU
2 stops17h 10mDelta
Sat 8/1109:25SOU - MDW
2 stops18h 49mDelta
Deal found 17/9£1,600
Fri 7/1113:08MDW - SOU
2 stops13h 42mKLM
Sun 9/1109:30SOU - MDW
2 stops20h 02mKLM
Deal found 17/9£1,753
Mon 29/909:20MDW - SOU
3 stops25h 00mMultiple Airlines
Thu 2/1011:25SOU - MDW
3 stops27h 14mMultiple Airlines
Deal found 16/9£1,873

Cheapflights Fare Finder

 
Customise your flight search to find flights from Illinois to Southampton 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 18 September 2025.
Use the filters below to find and compare flights from Illinois to Southampton that are best for you.

Fly from

Illinois

Fly to

Southampton

Route

Depart

Return

Price

ChicagoSouthampton

ORD - SOU

ORDSOU

Chicago O'Hare Intl

Wed 3/12

16:25-08:20

1 stop9h 55m

Southampton Eastleigh

Wed 10/12

08:40-14:20

1 stop11h 40m

£539

ChicagoSouthampton

ORD - SOU

ORDSOU

Chicago O'Hare Intl

Wed 3/12

15:45-17:25

2 stops19h 40m

Southampton Eastleigh

Tue 9/12

17:30-14:20

1 stop26h 50m

£571

ChicagoSouthampton

ORD - SOU

ORDSOU

Chicago O'Hare Intl

Wed 3/12

16:25-08:20

1 stop9h 55m

Southampton Eastleigh

Mon 8/12

08:40-14:20

1 stop11h 40m

£576

ChicagoSouthampton

ORD - SOU

ORDSOU

Chicago O'Hare Intl

Wed 3/12

16:25-08:20

1 stop9h 55m

Southampton Eastleigh

Sun 7/12

09:30-14:20

1 stop10h 50m

£576

ChicagoSouthampton

ORD - SOU

ORDSOU

Chicago O'Hare Intl

Fri 31/10

13:25-08:50

2 stops14h 25m

Southampton Eastleigh

Fri 7/11

08:40-14:20

1 stop11h 40m

£580

ChicagoSouthampton

ORD - SOU

ORDSOU

Chicago O'Hare Intl

Wed 25/2

16:25-08:20

1 stop9h 55m

Southampton Eastleigh

Sun 1/3

17:45-14:20

1 stop26h 35m

£582

ChicagoSouthampton

ORD - SOU

ORDSOU

Chicago O'Hare Intl

Wed 25/2

14:10-17:25

2 stops21h 15m

Southampton Eastleigh

Sun 1/3

09:30-23:54

2 stops44h 24m

£593

ChicagoSouthampton

MDW - SOU

MDWSOU

Chicago Midway

Wed 25/2

06:00-17:25

2 stops29h 25m

Southampton Eastleigh

Sun 1/3

09:30-21:46

2 stops18h 16m

£593

ChicagoSouthampton

MDW - SOU

MDWSOU

Chicago Midway

Mon 29/9

18:30-17:00

2 stops16h 30m

Southampton Eastleigh

Thu 2/10

17:35-18:35

2 stops31h 00m

£1,404

ChicagoSouthampton

MDW - SOU

MDWSOU

Chicago Midway

Mon 29/9

09:20-08:45

2 stops17h 25m

Southampton Eastleigh

Thu 2/10

09:20-18:35

2 stops15h 15m

£1,404

Flights are sorted by cheapest return flights first.

Deals found on 17/9

Showing 1-10 of 21 results
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Best time to book a flight from Illinois to Southampton

Have a flexible travel schedule? Discover the best time to fly to Southampton from Illinois 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 Illinois to Southampton

What is the cheapest month to book a flight from Illinois to Southampton?

Currently, September is the cheapest month in which you can book a flight from Illinois to Southampton (average of £203). Flying from Illinois to Southampton in November is currently the most expensive (average of £262). 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 Illinois to Southampton. 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 into for flights to Southampton from Illinois?

    Most people fly into Southampton Eastleigh (SOU) if they book a flight to Southampton from Illinois. Eastleigh is conveniently located just 3.5 mi from Southampton’s city center.

  • How long is the flight from Illinois to Southampton?

    A quick flight from Illinois to Southampton can take about 9h 55m. Delta provides one of the quickest options available for as low as £539. Illinois and Southampton are separated by a distance of 3921 mi. When browsing for deals, the options you’ll see will be for both direct flights and flights with stops.

  • Can I find deals for flights from Illinois to Southampton that include hotel bookings?

    Yes. In addition to deals on Illinois to Southampton flights, Cheapflights offers holiday packages that include both flights and hotel.

  • How can I find direct flights from Illinois to Southampton?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Illinois to Southampton.

  • Can I find deals for business class flights from Illinois to Southampton?

    Yes. Cheapflights offers flight deals from Illinois to Southampton 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 Illinois to Southampton?

    Currently, September is the cheapest month in which you can book a flight from Illinois to Southampton (average of £203). Flying from Illinois to Southampton in November is currently the most expensive (average of £262). 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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Alternative routes for Illinois to Southampton

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Can Cheapflights find flights from Illinois to Southampton with no change fees?

Need flexible booking options for your flight to Southampton from Illinois? Don’t worry, Cheapflights have you covered. Use our search filter to only show flights with no change fees.

Can Cheapflights notify me if prices for flights from Illinois to Southampton become cheaper?

Yes, Cheapflights offers price alerts on Illinois to Southampton flights so you can book your travel at the perfect time. Price Alerts can be enabled by clicking the bell icon next to the flight deals above and providing your email address where you want to receive the alerts.

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