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Cheap flights from Illinois to Southampton from £206

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 15/2. Fares are subject to change and may not be available on all flights or dates of travel.
ORD — SOU
18 Feb — 25 Feb1
1 adult
1 adult, Economy, 0 bags

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 19 January 2026.

Round-trip from

£486

One-way from

£206

Popular in

June

Cheapest in

April

Average price

£498
Aer Lingus
  • Aer Lingus
  • 4/3-11/3
  • 2 total stops
  • 29h 15m total
  • Illinois to Southampton
Search Deals
15/2
  • 15/2
  • 2 total stops
  • 29h 50m 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 January 2026
Search Deals

Find 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 19 January 2026.

Wed 4/315:50
ORD
-
SOU
1 stop17h 45m
Aer Lingus
Wed 11/312:25
SOU
-
ORD
1 stop11h 30m
Aer Lingus
Deal found 18/1£486
Wed 4/318:30
ORD
-
SOU
2 stops15h 05m
Multiple Airlines
Wed 11/317:35
SOU
-
ORD
3 stops29h 45m
Multiple Airlines
Deal found 18/1£502
Tue 3/321:00
ORD
-
SOU
1 stop12h 35m
Multiple Airlines
Tue 10/316:05
SOU
-
ORD
2 stops31h 15m
Multiple Airlines
Deal found 17/1£541
Sun 1/315:50
ORD
-
SOU
1 stop10h 55m
Multiple Airlines
Sun 15/320:10
SOU
-
ORD
2 stops27h 10m
Multiple Airlines
Deal found 17/1£557
Mon 16/316:50
ORD
-
SOU
1 stop14h 05m
Multiple Airlines
Tue 24/316:05
SOU
-
ORD
2 stops31h 15m
Multiple Airlines
Deal found 16/1£560
Wed 4/316:25
ORD
-
SOU
1 stop19h 00m
Virgin Atlantic
Wed 11/308:50
SOU
-
ORD
1 stop11h 30m
Virgin Atlantic
Deal found 18/1£560
Wed 4/313:29
MDW
-
SOU
2 stops12h 51m
Virgin Atlantic
Wed 11/308:50
SOU
-
MDW
2 stops14h 50m
Virgin Atlantic
Deal found 18/1£561
Tue 3/313:29
MDW
-
SOU
2 stops12h 51m
KLM
Tue 10/308:50
SOU
-
MDW
2 stops14h 50m
KLM
Deal found 17/1£587
Thu 22/113:26
MDW
-
SOU
2 stops12h 59m
KLM
Fri 6/209:00
SOU
-
MDW
2 stops19h 22m
KLM
Deal found 19/1£623
Thu 22/110:48
MDW
-
SOU
2 stops15h 37m
Delta
Fri 6/209:00
SOU
-
MDW
2 stops15h 36m
Delta
Deal found 19/1£631
Mon 16/318:34
MDW
-
SOU
2 stops17h 26m
Delta
Tue 24/308:50
SOU
-
MDW
2 stops18h 41m
Delta
Deal found 16/1£819
Thu 5/318:40
MDW
-
SOU
2 stops16h 20m
KLM
Thu 12/308:50
SOU
-
MDW
2 stops18h 41m
KLM
Deal found 19/1£856

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 19 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

Tue 3/3

21:00-15:35

1 stop12h 35m

Southampton Eastleigh

Tue 10/3

16:05-18:20

2 stops31h 15m

£541

ChicagoSouthampton

ORD - SOU

ORDSOU

Chicago O'Hare Intl

Wed 4/3

15:50-17:25

2 stops19h 35m

Southampton Eastleigh

Wed 11/3

08:50-18:55

2 stops15h 05m

£545

ChicagoSouthampton

ORD - SOU

ORDSOU

Chicago O'Hare Intl

Mon 16/3

16:50-11:55

1 stop14h 05m

Southampton Eastleigh

Tue 24/3

16:05-18:20

2 stops31h 15m

£560

ChicagoSouthampton

MDW - SOU

MDWSOU

Chicago Midway

Wed 4/3

13:29-08:20

2 stops12h 51m

Southampton Eastleigh

Wed 11/3

08:50-18:40

2 stops14h 50m

£561

ChicagoSouthampton

ORD - SOU

ORDSOU

Chicago O'Hare Intl

Thu 5/3

21:00-15:35

1 stop12h 35m

Southampton Eastleigh

Thu 12/3

09:30-18:55

1 stop14h 25m

£573

ChicagoSouthampton

ORD - SOU

ORDSOU

Chicago O'Hare Intl

Mon 16/3

17:25-08:20

1 stop9h 55m

Southampton Eastleigh

Tue 24/3

17:35-15:20

1 stop26h 45m

£577

ChicagoSouthampton

MDW - SOU

MDWSOU

Chicago Midway

Tue 3/3

13:29-08:20

2 stops12h 51m

Southampton Eastleigh

Tue 10/3

08:50-18:40

2 stops14h 50m

£587

ChicagoSouthampton

ORD - SOU

ORDSOU

Chicago O'Hare Intl

Tue 3/3

11:18-08:20

2 stops15h 02m

Southampton Eastleigh

Tue 10/3

08:50-21:49

2 stops17h 59m

£587

ChicagoSouthampton

ORD - SOU

ORDSOU

Chicago O'Hare Intl

Thu 19/3

12:15-08:20

2 stops15h 05m

Southampton Eastleigh

Wed 25/3

08:50-15:20

1 stop11h 30m

£624

ChicagoSouthampton

ORD - SOU

ORDSOU

Chicago O'Hare Intl

Tue 3/2

09:55-08:50

2 stops16h 55m

Southampton Eastleigh

Mon 9/2

09:25-14:20

1 stop10h 55m

£624

Flights are sorted by cheapest return flights first.

Deals found on 18/1

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, 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 £454). 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. Virgin Atlantic provides one of the quickest options available for as low as £577. 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 £280). Flying from Illinois to Southampton in July is currently the most expensive (average of £454). 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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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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