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Cheap flights from Illinois to Southampton from £207

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
12 Feb — 19 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 13 January 2026.

Round-trip from

£540

One-way from

£207

Popular in

June

Cheapest in

September

Average price

£495
25/2-4/3
  • 25/2-4/3
  • 3 total stops
  • 61h 00m 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 (£20 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 13 January 2026.

Wed 25/221:00
ORD
-
SOU
1 stop29h 45m
Multiple Airlines
Wed 4/316:05
SOU
-
ORD
2 stops31h 15m
Multiple Airlines
Deal found 11/1£540
Wed 25/216:25
ORD
-
SOU
1 stop9h 55m
Delta
Wed 4/308:50
SOU
-
ORD
1 stop11h 30m
Delta
Deal found 11/1£554
Wed 1/419:14
ORD
-
SOU
2 stops15h 36m
KLM
Fri 10/409:05
SOU
-
ORD
1 stop11h 10m
KLM
Deal found 12/1£564
Wed 25/209:50
MDW
-
SOU
2 stops16h 30m
Delta
Wed 4/308:50
SOU
-
MDW
2 stops15h 50m
Delta
Deal found 11/1£566
Wed 1/416:50
ORD
-
SOU
1 stop18h 00m
Virgin Atlantic
Sat 11/409:15
SOU
-
ORD
2 stops14h 38m
Virgin Atlantic
Deal found 12/1£583
Thu 26/221:00
ORD
-
SOU
1 stop29h 45m
Multiple Airlines
Thu 5/320:10
SOU
-
ORD
2 stops27h 10m
Multiple Airlines
Deal found 12/1£586
Thu 26/221:00
ORD
-
SOU
1 stop16h 40m
Aer Lingus
Thu 5/309:30
SOU
-
ORD
1 stop15h 45m
Aer Lingus
Deal found 12/1£592
Wed 1/412:15
ORD
-
SOU
2 stops14h 20m
KLM
Sun 12/417:20
SOU
-
ORD
1 stop27h 10m
KLM
Deal found 12/1£601
Mon 4/516:50
ORD
-
SOU
1 stop18h 00m
Delta
Mon 25/517:20
SOU
-
ORD
1 stop26h 55m
Delta
Deal found 10/1£602
Mon 12/116:25
ORD
-
SOU
1 stop10h 25m
Air Europa
Mon 19/117:35
SOU
-
ORD
2 stops34h 00m
Air Europa
Deal found 11/1£603
Thu 26/209:50
MDW
-
SOU
2 stops16h 30m
KLM
Thu 5/308:50
SOU
-
MDW
2 stops14h 47m
KLM
Deal found 12/1£603
Wed 1/409:50
ORD
-
SOU
2 stops25h 00m
Delta
Sun 12/417:20
SOU
-
ORD
2 stops28h 58m
Delta
Deal found 12/1£604

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 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

Wed 25/2

21:00-08:45

1 stop29h 45m

Southampton Eastleigh

Wed 4/3

16:05-17:20

2 stops31h 15m

£540

ChicagoSouthampton

ORD - SOU

ORDSOU

Chicago O'Hare Intl

Wed 25/2

16:25-08:20

1 stop9h 55m

Southampton Eastleigh

Wed 4/3

08:50-14:20

1 stop11h 30m

£554

ChicagoSouthampton

ORD - SOU

ORDSOU

Chicago O'Hare Intl

Wed 1/4

19:14-16:50

2 stops15h 36m

Southampton Eastleigh

Fri 10/4

09:05-14:15

1 stop11h 10m

£564

ChicagoSouthampton

MDW - SOU

MDWSOU

Chicago Midway

Wed 25/2

09:50-08:20

2 stops16h 30m

Southampton Eastleigh

Wed 4/3

08:50-18:40

2 stops15h 50m

£566

ChicagoSouthampton

ORD - SOU

ORDSOU

Chicago O'Hare Intl

Wed 1/4

16:50-16:50

1 stop18h 00m

Southampton Eastleigh

Sun 12/4

17:20-14:30

1 stop27h 10m

£601

ChicagoSouthampton

ORD - SOU

ORDSOU

Chicago O'Hare Intl

Tue 5/5

16:20-16:50

1 stop18h 30m

Southampton Eastleigh

Tue 26/5

09:05-14:15

1 stop11h 10m

£602

ChicagoSouthampton

ORD - SOU

ORDSOU

Chicago O'Hare Intl

Mon 4/5

16:50-16:50

1 stop18h 00m

Southampton Eastleigh

Mon 25/5

17:20-14:15

1 stop26h 55m

£602

ChicagoSouthampton

ORD - SOU

ORDSOU

Chicago O'Hare Intl

Mon 4/5

16:50-16:50

1 stop18h 00m

Southampton Eastleigh

Tue 26/5

09:05-14:15

1 stop11h 10m

£602

ChicagoSouthampton

ORD - SOU

ORDSOU

Chicago O'Hare Intl

Mon 4/5

16:50-16:50

1 stop18h 00m

Southampton Eastleigh

Wed 27/5

09:05-14:30

1 stop11h 25m

£602

ChicagoSouthampton

MDW - SOU

MDWSOU

Chicago Midway

Thu 26/2

09:50-08:20

2 stops16h 30m

Southampton Eastleigh

Thu 5/3

08:50-17:37

2 stops14h 47m

£603

Flights are sorted by cheapest return flights first.

Deals found on 12/1

Showing 1-10 of 41 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 £279). Flying from Illinois to Southampton in July is currently the most expensive (average of £449). 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 £554. 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 £279). Flying from Illinois to Southampton in July is currently the most expensive (average of £449). 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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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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