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Cheap flights from Illinois to Southampton from £272

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 31/3. Fares are subject to change and may not be available on all flights or dates of travel.
ORD — SOU
12 Apr — 19 Apr1
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 13 March 2026.

Wed 8/421:00
ORD
-
SOU
1 stop16h 30m
Aer Lingus
Wed 15/409:20
SOU
-
ORD
1 stop15h 55m
Aer Lingus
Deal found 9/3£611
Mon 28/916:50
ORD
-
SOU
1 stop18h 00m
Delta
Tue 13/1017:20
SOU
-
ORD
1 stop27h 10m
Delta
Deal found 9/3£642
Mon 28/909:35
ORD
-
SOU
2 stops25h 15m
Delta
Mon 12/1017:20
SOU
-
ORD
1 stop26h 55m
Delta
Deal found 9/3£646
Mon 28/916:50
ORD
-
SOU
1 stop18h 00m
Delta
Wed 7/1009:05
SOU
-
ORD
2 stops18h 28m
Delta
Deal found 9/3£649
Wed 22/409:27
MDW
-
SOU
2 stops17h 08m
Delta
Wed 29/409:05
SOU
-
MDW
2 stops15h 31m
Delta
Deal found 7/3£652
Wed 8/410:40
ORD
-
SOU
2 stops15h 55m
KLM
Wed 15/409:05
SOU
-
ORD
2 stops17h 35m
KLM
Deal found 9/3£652
Wed 11/310:40
ORD
-
SOU
2 stops16h 40m
Delta
Mon 16/308:50
SOU
-
ORD
1 stop11h 30m
Delta
Deal found 8/3£678
Tue 18/816:20
ORD
-
SOU
1 stop10h 25m
Delta
Wed 26/818:05
SOU
-
ORD
1 stop26h 10m
Delta
Deal found 9/3£679
Sun 12/416:20
ORD
-
SOU
1 stop10h 15m
Delta
Tue 21/409:05
SOU
-
ORD
1 stop11h 10m
Delta
Deal found 10/3£680
Mon 17/813:30
ORD
-
SOU
2 stops22h 05m
Delta
Tue 25/809:15
SOU
-
ORD
1 stop11h 00m
Delta
Deal found 9/3£683
Wed 11/310:40
ORD
-
SOU
2 stops16h 40m
Multiple Airlines
Mon 16/317:40
SOU
-
ORD
2 stops28h 30m
Multiple Airlines
Deal found 8/3£686
Wed 15/416:50
ORD
-
SOU
1 stop18h 00m
Delta
Mon 20/417:20
SOU
-
ORD
1 stop26h 55m
Delta
Deal found 10/3£687

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 13 March 2026.

Round-trip from

£551

One-way from

£272

Popular in

June

Cheapest in

February

Average price

£527
Aer Lingus
  • Aer Lingus
  • 22/4-29/4
  • 2 total stops
  • 26h 50m total
  • Illinois to Southampton
Search Deals
31/3
  • 31/3
  • 3 total stops
  • 53h 24m total
  • Illinois to Southampton
Search Deals
Highest demand for flights based on searches. 21% potential increase in price (£113 potential increase over avg. return price).
Search Deals
Cheapest flight prices on average. 5% potential price decrease (£21 potential savings vs. average return price).
Search Deals
Average for round-trip flights in March 2026
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 13 March 2026.
Use the filters below to find and compare flights from Illinois to Southampton that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest return flight

ChicagoSouthampton

ORD - SOU

ORDSOU

Chicago O'Hare Intl

Wed 15/4

16:50-16:50

1 stop18h 00m

Southampton Eastleigh

Mon 20/4

17:20-14:15

1 stop26h 55m

£687

ChicagoSouthampton

ORD - SOU

ORDSOU

Chicago O'Hare Intl

Mon 17/8

13:30-17:35

2 stops22h 05m

Southampton Eastleigh

Wed 26/8

18:05-16:36

2 stops28h 31m

£690

ChicagoSouthampton

MDW - SOU

MDWSOU

Chicago Midway

Mon 13/4

19:16-16:50

2 stops15h 34m

Southampton Eastleigh

Tue 21/4

17:20-17:58

2 stops30h 38m

£690

ChicagoSouthampton

MDW - SOU

MDWSOU

Chicago Midway

Tue 14/4

10:41-08:35

2 stops15h 54m

Southampton Eastleigh

Tue 21/4

17:20-17:58

2 stops30h 38m

£690

ChicagoSouthampton

ORD - SOU

ORDSOU

Chicago O'Hare Intl

Mon 30/3

14:10-16:50

2 stops20h 40m

Southampton Eastleigh

Tue 7/4

17:20-14:30

1 stop27h 10m

£691

ChicagoSouthampton

ORD - SOU

ORDSOU

Chicago O'Hare Intl

Tue 19/5

16:20-08:35

1 stop10h 15m

Southampton Eastleigh

Wed 27/5

17:20-14:15

1 stop26h 55m

£785

ChicagoSouthampton

ORD - SOU

ORDSOU

Chicago O'Hare Intl

Tue 19/5

19:00-16:50

2 stops15h 50m

Southampton Eastleigh

Tue 26/5

17:20-14:30

1 stop27h 10m

£848

ChicagoSouthampton

ORD - SOU

ORDSOU

Chicago O'Hare Intl

Thu 21/5

16:20-08:35

1 stop10h 15m

Southampton Eastleigh

Sun 24/5

17:20-16:29

2 stops29h 09m

£858
Fastest return journey

ChicagoSouthampton

ORD - SOU

ORDSOU

Chicago O'Hare Intl

Tue 28/7

16:20-08:45

1 stop10h 25m

Southampton Eastleigh

Sat 8/8

09:15-14:15

1 stop11h 00m

£859

ChicagoSouthampton

ORD - SOU

ORDSOU

Chicago O'Hare Intl

Tue 2/6

09:36-08:35

2 stops16h 59m

Southampton Eastleigh

Wed 17/6

09:05-14:30

1 stop11h 25m

£886

Flights are sorted by cheapest return flights first.

Deals found on 9/3

Showing 1-10 of 36 resultsSorted by cheapest first
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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 £46). Flying from Illinois to Southampton in July is currently the most expensive (average of £453). 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 18h. Delta provides one of the quickest options available for as low as £687. Illinois and Southampton are separated by a distance of 3921 mi.

  • 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 £46). Flying from Illinois to Southampton in July is currently the most expensive (average of £453). 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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Why should you use Cheapflights to find cheap flight tickets from Illinois to Southampton?

By finding flights from multiple airlines and providers at completely no cost, Cheapflights helps millions of users like you annually find the best flights to Southampton from Illinois.

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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