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Cheap flights from Illinois to Southampton from £350

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 25/2. Fares are subject to change and may not be available on all flights or dates of travel.
ORD — SOU
20 Jan — 27 Jan1
1 adult
1 adult, Economy, 0 bags

Cheap flight deals from Illinois to Southampton

Enter your travel dates to find the best prices.

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 21 December 2025.

Fri 19/1216:25ORD - SOU
1 stop10h 25mDelta
Tue 23/1217:30SOU - ORD
1 stop26h 50mDelta
Deal found 19/12£998
Fri 19/1216:25ORD - SOU
1 stop10h 25mDelta
Mon 22/1208:40SOU - ORD
2 stops42h 56mDelta
Deal found 19/12£1,005
Thu 25/1217:31ORD - SOU
2 stops17h 29mDelta
Mon 29/1208:40SOU - ORD
1 stop11h 40mDelta
Deal found 19/12£1,019
Thu 25/1217:31ORD - SOU
2 stops17h 29mDelta
Sun 28/1209:30SOU - ORD
2 stops17h 06mDelta
Deal found 19/12£1,026
Mon 22/1218:30ORD - SOU
2 stops31h 40mDelta
Tue 30/1217:30SOU - ORD
1 stop26h 50mDelta
Deal found 19/12£1,027
Mon 22/1218:02ORD - SOU
2 stops32h 08mDelta
Mon 29/1218:05SOU - ORD
2 stops28h 51mDelta
Deal found 19/12£1,031
Wed 24/1217:31ORD - SOU
2 stops32h 34mDelta
Mon 29/1208:40SOU - ORD
1 stop11h 40mDelta
Deal found 19/12£1,091
Wed 24/1217:31ORD - SOU
2 stops32h 34mDelta
Sun 28/1209:30SOU - ORD
2 stops17h 06mDelta
Deal found 19/12£1,099
Tue 23/1219:59ORD - SOU
2 stops54h 06mDelta
Mon 29/1208:40SOU - ORD
1 stop11h 40mDelta
Deal found 19/12£1,101
Thu 25/1217:31ORD - SOU
2 stops17h 29mDelta
Fri 2/108:40SOU - ORD
1 stop11h 40mDelta
Deal found 19/12£1,121
Mon 22/1218:02ORD - SOU
2 stops32h 08mDelta
Fri 2/108:40SOU - ORD
1 stop11h 40mDelta
Deal found 19/12£1,130

Find flight deals from Illinois to Southampton

Keep the following information in mind while searching for Illinois to Southampton flight deals. Data was last updated 21 December 2025.

Round-trip from

£574

One-way from

£350

Popular in

June

Cheapest in

September

Average price

£623
Delta
  • Delta
  • 23/2-4/3
  • 2 total stops
  • 30h 15m total
  • Illinois to Southampton
Search Deals
Delta
  • Delta
  • 23/2
  • 1 total stop
  • 18h 35m total
  • Illinois to Southampton
Search Deals
Highest demand for flights based on searches. 21% potential increase in price (£114 potential increase over avg. return price).
Search Deals
Cheapest flight prices on average. 4% potential price decrease (£20 potential savings vs. average return price).
Search Deals
Average for round-trip flights in December 2025
Search Deals

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 21 December 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

Mon 2/3

16:25-17:00

1 stop18h 35m

Southampton Eastleigh

Tue 10/3

17:35-15:20

1 stop26h 45m

£574

ChicagoSouthampton

ORD - SOU

ORDSOU

Chicago O'Hare Intl

Wed 25/2

16:25-08:20

1 stop9h 55m

Southampton Eastleigh

Tue 3/3

17:35-14:20

1 stop26h 45m

£574

ChicagoSouthampton

ORD - SOU

ORDSOU

Chicago O'Hare Intl

Mon 23/2

16:25-17:00

1 stop18h 35m

Southampton Eastleigh

Thu 5/3

18:05-14:20

1 stop26h 15m

£574

ChicagoSouthampton

ORD - SOU

ORDSOU

Chicago O'Hare Intl

Mon 23/2

16:25-17:00

1 stop18h 35m

Southampton Eastleigh

Wed 4/3

08:40-14:20

1 stop11h 40m

£574

ChicagoSouthampton

ORD - SOU

ORDSOU

Chicago O'Hare Intl

Wed 25/2

16:25-08:20

1 stop9h 55m

Southampton Eastleigh

Wed 4/3

08:40-14:20

1 stop11h 40m

£574

ChicagoSouthampton

ORD - SOU

ORDSOU

Chicago O'Hare Intl

Wed 25/2

16:25-08:20

1 stop9h 55m

Southampton Eastleigh

Fri 6/3

08:40-14:20

1 stop11h 40m

£574

ChicagoSouthampton

ORD - SOU

ORDSOU

Chicago O'Hare Intl

Mon 23/2

16:25-17:00

1 stop18h 35m

Southampton Eastleigh

Tue 3/3

17:35-14:20

1 stop26h 45m

£574

ChicagoSouthampton

ORD - SOU

ORDSOU

Chicago O'Hare Intl

Sun 22/3

11:10-08:20

2 stops16h 10m

Southampton Eastleigh

Mon 30/3

17:20-14:15

1 stop26h 55m

£577

ChicagoSouthampton

ORD - SOU

ORDSOU

Chicago O'Hare Intl

Tue 24/2

10:36-08:10

2 stops15h 34m

Southampton Eastleigh

Thu 5/3

18:05-14:20

1 stop26h 15m

£577

ChicagoSouthampton

ORD - SOU

ORDSOU

Chicago O'Hare Intl

Mon 23/2

16:25-17:00

1 stop18h 35m

Southampton Eastleigh

Mon 2/3

17:35-17:43

2 stops30h 08m

£581

Flights are sorted by cheapest return flights first.

Deals found on 20/12

Showing 1-10 of 30 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, June is the cheapest month in which you can book a flight from Illinois to Southampton (average of £280). Flying from Illinois to Southampton in July is currently the most expensive (average of £451). 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 16h 02m. Delta provides one of the quickest options available for as low as £585. Illinois and Southampton are separated by a distance of 3924 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, June is the cheapest month in which you can book a flight from Illinois to Southampton (average of £280). Flying from Illinois to Southampton in July is currently the most expensive (average of £451). 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 Illinois to Southampton

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How does Cheapflights help users find flights from 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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