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Cheap flights from Illinois to Southampton from £509

This is the cheapest retur flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 9/3. Fares are subject to change and may not be available on all flights or dates of travel.
ORD — SOU
23 Feb — 2 Mar1
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 24 January 2026.

Mon 9/312:50
ORD
-
SOU
3 stops21h 45m
Multiple Airlines
Mon 16/320:10
SOU
-
ORD
2 stops23h 00m
Multiple Airlines
Deal found 23/1£509
Sun 1/321:00
ORD
-
SOU
1 stop32h 55m
Multiple Airlines
Sun 15/320:10
SOU
-
ORD
2 stops27h 10m
Multiple Airlines
Deal found 22/1£564
Tue 3/307:00
ORD
-
SOU
2 stops19h 20m
KLM
Tue 17/317:35
SOU
-
ORD
1 stop26h 45m
KLM
Deal found 22/1£574
Mon 9/1114:10
ORD
-
SOU
2 stops36h 00m
Delta
Fri 20/1108:40
SOU
-
ORD
1 stop11h 50m
Delta
Deal found 21/1£584
Tue 10/1110:40
ORD
-
SOU
2 stops15h 30m
Delta
Mon 23/1108:40
SOU
-
ORD
2 stops38h 54m
Delta
Deal found 21/1£591
Sat 14/1115:50
ORD
-
SOU
2 stops34h 20m
Delta
Tue 24/1117:30
SOU
-
ORD
1 stop27h 00m
Delta
Deal found 21/1£592
Fri 23/116:25
ORD
-
SOU
1 stop10h 20m
Virgin Atlantic
Fri 6/209:00
SOU
-
ORD
1 stop11h 20m
Virgin Atlantic
Deal found 22/1£596
Mon 9/317:25
ORD
-
SOU
1 stop9h 55m
Delta
Mon 16/308:50
SOU
-
ORD
1 stop11h 30m
Delta
Deal found 23/1£607
Tue 3/321:00
ORD
-
SOU
1 stop29h 45m
Aer Lingus
Tue 17/312:25
SOU
-
ORD
1 stop11h 30m
Aer Lingus
Deal found 22/1£610
Fri 23/113:26
MDW
-
SOU
2 stops13h 19m
KLM
Thu 5/209:00
SOU
-
MDW
2 stops15h 36m
KLM
Deal found 22/1£617
Fri 23/113:26
MDW
-
SOU
2 stops13h 19m
KLM
Sat 7/209:25
SOU
-
MDW
2 stops18h 57m
KLM
Deal found 22/1£654
Sun 23/813:05
MDW
-
SOU
2 stops13h 40m
Multiple Airlines
Sat 29/817:30
SOU
-
MDW
2 stops28h 57m
Multiple Airlines
Deal found 21/1£701

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 24 January 2026.

Round-trip from

£509

Popular in

June

Cheapest in

April

Average price

£492
9/3-16/3
  • 9/3-16/3
  • 5 total stops
  • 44h 45m total
  • Illinois to Southampton
Search Deals
Highest demand for flights based on searches. 21% potential increase in price (£110 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 January 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 24 January 2026.
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 9/3

12:50-15:35

3 stops21h 45m

Southampton Eastleigh

Mon 16/3

20:10-14:10

2 stops23h 00m

£509

ChicagoSouthampton

ORD - SOU

ORDSOU

Chicago O'Hare Intl

Mon 9/3

10:40-08:20

2 stops16h 40m

Southampton Eastleigh

Mon 16/3

17:40-16:43

2 stops28h 03m

£581

ChicagoSouthampton

ORD - SOU

ORDSOU

Chicago O'Hare Intl

Mon 9/3

17:25-08:20

1 stop9h 55m

Southampton Eastleigh

Mon 16/3

08:50-15:20

1 stop11h 30m

£607

ChicagoSouthampton

ORD - SOU

ORDSOU

Chicago O'Hare Intl

Tue 5/5

16:20-08:35

1 stop10h 15m

Southampton Eastleigh

Thu 28/5

09:05-14:15

1 stop11h 10m

£619

ChicagoSouthampton

ORD - SOU

ORDSOU

Chicago O'Hare Intl

Mon 4/5

16:50-16:50

1 stop18h 00m

Southampton Eastleigh

Thu 28/5

17:20-21:36

2 stops34h 16m

£626

ChicagoSouthampton

ORD - SOU

ORDSOU

Chicago O'Hare Intl

Wed 6/5

16:50-16:50

1 stop18h 00m

Southampton Eastleigh

Thu 28/5

09:05-20:24

2 stops17h 19m

£626

ChicagoSouthampton

ORD - SOU

ORDSOU

Chicago O'Hare Intl

Fri 8/5

16:20-16:50

1 stop18h 30m

Southampton Eastleigh

Sun 17/5

09:15-19:43

2 stops16h 28m

£661

ChicagoSouthampton

ORD - SOU

ORDSOU

Chicago O'Hare Intl

Fri 8/5

16:20-08:45

1 stop10h 25m

Southampton Eastleigh

Thu 28/5

17:20-21:36

2 stops34h 16m

£663

ChicagoSouthampton

ORD - SOU

ORDSOU

Chicago O'Hare Intl

Sat 7/3

16:25-08:50

1 stop10h 25m

Southampton Eastleigh

Sat 14/3

17:30-15:20

1 stop26h 50m

£686

ChicagoSouthampton

ORD - SOU

ORDSOU

Chicago O'Hare Intl

Thu 7/5

16:20-16:50

1 stop18h 30m

Southampton Eastleigh

Thu 28/5

09:05-14:15

1 stop11h 10m

£698

Flights are sorted by cheapest return flights first.

Deals found on 22/1

Showing 1-10 of 14 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 £277). Flying from Illinois to Southampton in July is currently the most expensive (average of £448). 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. KLM provides one of the quickest options available for as low as £607. 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, June is the cheapest month in which you can book a flight from Illinois to Southampton (average of £277). Flying from Illinois to Southampton in July is currently the most expensive (average of £448). 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

See prices for flight routes from nearby airports that may be better suited for you.
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How does Cheapflights help users find flights from Illinois to Southampton?

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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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