HomeSearch by dateVacation packagesHotelsFlight dealsCar rentalTravel tips & news
Illinois

$446+ Cheap flights from Southampton (SOU) to Illinois

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 4/19. Fares are subject to change and may not be available on all flights or dates of travel.
SOU — ORD
Mar 5 — Mar 121
Thu 3/5
Thu 3/12
1 adult, Economy
We work with more than 300 partners to bring you better travel deals

Find cheap flights from Southampton to Illinois with Cheapflights

1. Tell us where you want to go

Enter your travel information like dates, passengers, trip type (one-way or round trip), and preferred cabin class then click “Find deals”

2. Select your favorite providers

We find the providers serving your travel needs. Choose up to four travel providers to compare side-by-side for flights, hotels, or car rentals.

3. Compare prices and book

Review each provider’s pricing and select the best option for you! Book through your favorite provider’s website for a seamless experience.

Cheap flight deals from Southampton to Illinois

Cheapest flights from Southampton to Illinois
Explore the most affordable flight options available from Southampton to Illinois. Find the lowest fares from popular airlines and budget airlines, with prices last updated on February 3, 2026.

This Delta deal was found by Cheapflights users on 2/2. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 3/198:50 am
SOU
-
ORD
2 stops17h 59m
Delta
Thu 3/2611:10 am
ORD
-
SOU
2 stops16h 10m
Delta
Deal found 2/2$924
This KLM deal was found by Cheapflights users on 2/2. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure KLM is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 3/196:05 pm
SOU
-
ORD
1 stop26h 15m
KLM
Thu 3/2610:40 am
ORD
-
SOU
2 stops16h 40m
KLM
Deal found 2/2$992
This British Airways deal was found by Cheapflights users on 1/31. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure British Airways is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 3/412:25 pm
SOU
-
ORD
1 stop12h 50m
British Airways
Sun 3/84:50 pm
ORD
-
SOU
1 stop10h 55m
British Airways
Deal found 1/31$995
This British Airways deal was found by Cheapflights users on 2/2. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure British Airways is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 3/54:05 pm
SOU
-
ORD
1 stop27h 55m
British Airways
Mon 3/94:50 pm
ORD
-
SOU
1 stop14h 05m
British Airways
Deal found 2/2$1,003
This Booking.com deal was found by Cheapflights users on 2/2. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 3/196:05 pm
SOU
-
ORD
3 stops27h 20m
Multiple Airlines
Thu 3/267:15 am
ORD
-
SOU
3 stops29h 15m
Multiple Airlines
Deal found 2/2$1,066
This TravelUp deal was found by Cheapflights users on 2/2. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure TravelUp is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 3/198:50 am
SOU
-
MDW
2 stops18h 41m
Virgin Atlantic
Thu 3/2612:47 pm
MDW
-
SOU
2 stops23h 13m
Virgin Atlantic
Deal found 2/2$1,099
This Delta deal was found by Cheapflights users on 2/3. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 3/278:50 am
SOU
-
MDW
2 stops14h 50m
Delta
Mon 4/61:10 pm
MDW
-
SOU
2 stops13h 25m
Delta
Deal found 2/3$2,171
This KLM deal was found by Cheapflights users on 2/3. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure KLM is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 3/268:50 am
SOU
-
MDW
2 stops14h 50m
KLM
Mon 4/67:20 pm
MDW
-
SOU
2 stops15h 30m
KLM
Deal found 2/3$2,332
This KLM deal was found by Cheapflights users on 2/3. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure KLM is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 3/268:50 am
SOU
-
MDW
2 stops14h 50m
KLM
Sun 4/51:10 pm
MDW
-
SOU
2 stops13h 25m
KLM
Deal found 2/3$2,373

Find flight deals from Southampton to Illinois

Keep the following information in mind while searching for Southampton to Illinois flight deals. Data was last updated February 3, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$924
(Delta)

One-way from

$446
(Kiwi.com)

Popular in

July

Cheapest in

February

Average price

$578
Provider with most accurate pricing for London (LON)-Chicago (CHI) flight deals.
Search Deals
Provider most trusted by Cheapflights users for London (LON)-Chicago (CHI) flights.
Search Deals
From Southampton Eastleigh to Illinois
Search Deals
One-way flight from Southampton Eastleigh to Illinois
Search Deals
Highest demand for flights based on searches. 14% potential increase in price ($118 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 2% potential price decrease ($17 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in February 2026
Search Deals

Cheapflights Fare Finder

 
Customize your flight search to find flights from Southampton to Illinois 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 2,558,603 searches. Data last updated February 3, 2026.
Use the filters below to find and compare flights from Southampton to Illinois that are best for you.

Fly from

Southampton

Fly to

Illinois

Route

Depart

Return

Price

SouthamptonChicago

SOU - ORD

SOUORD

Southampton Eastleigh

Thu 3/19

8:50 am-9:49 pm

2 stops17h 59m

Chicago O'Hare Intl

Thu 3/26

11:10 am-8:20 am

2 stops16h 10m

$924

SouthamptonChicago

SOU - ORD

SOUORD

Southampton Eastleigh

Thu 3/19

6:05 pm-3:20 pm

1 stop26h 15m

Chicago O'Hare Intl

Thu 3/26

10:40 am-8:20 am

2 stops16h 40m

$992

SouthamptonChicago

SOU - ORD

SOUORD

Southampton Eastleigh

Wed 3/4

12:25 pm-7:15 pm

1 stop12h 50m

Chicago O'Hare Intl

Sun 3/8

4:50 pm-8:45 am

1 stop10h 55m

$995

SouthamptonChicago

SOU - ORD

SOUORD

Southampton Eastleigh

Thu 3/5

4:05 pm-2:00 pm

1 stop27h 55m

Chicago O'Hare Intl

Mon 3/9

4:50 pm-11:55 am

1 stop14h 05m

$1,003

SouthamptonChicago

SOU - ORD

SOUORD

Southampton Eastleigh

Thu 3/19

6:05 pm-4:25 pm

3 stops27h 20m

Chicago O'Hare Intl

Thu 3/26

7:15 am-5:30 pm

3 stops29h 15m

$1,066

SouthamptonChicago

SOU - MDW

SOUMDW

Southampton Eastleigh

Thu 3/19

8:50 am-10:31 pm

2 stops18h 41m

Chicago Midway

Thu 3/26

12:47 pm-5:00 pm

2 stops23h 13m

$1,099

SouthamptonChicago

SOU - MDW

SOUMDW

Southampton Eastleigh

Fri 3/27

8:50 am-6:40 pm

2 stops14h 50m

Chicago Midway

Mon 4/6

1:10 pm-8:35 am

2 stops13h 25m

$2,171

SouthamptonChicago

SOU - MDW

SOUMDW

Southampton Eastleigh

Fri 3/27

8:50 am-6:40 pm

2 stops14h 50m

Chicago Midway

Sun 4/5

9:30 am-8:35 am

2 stops17h 05m

$2,171

SouthamptonChicago

SOU - MDW

SOUMDW

Southampton Eastleigh

Thu 3/26

8:50 am-6:40 pm

2 stops14h 50m

Chicago Midway

Mon 4/6

7:20 pm-4:50 pm

2 stops15h 30m

$2,332

SouthamptonChicago

SOU - MDW

SOUMDW

Southampton Eastleigh

Thu 3/26

8:50 am-6:40 pm

2 stops14h 50m

Chicago Midway

Sun 4/5

1:10 pm-8:35 am

2 stops13h 25m

$2,373

Flights are sorted by cheapest round-trip flights first.

Deals found on 2/2

Showing 1-10 of 20 results
1
2

Best time to book a flight from Southampton to Illinois

Have a flexible travel schedule? Discover the best time to fly to Illinois from Southampton with our price prediction graph.
Estimated round-trip 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 Southampton to Illinois

What is the cheapest month to book a flight from Southampton to Illinois?

Currently, April is the cheapest month in which you can book a flight from Southampton to Illinois (average of $163). Flying from Southampton to Illinois in July is currently the most expensive (average of $674). 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 Southampton to Illinois. 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 from for flights from Southampton to Illinois?

    Southampton Eastleigh (SOU) is the airport you will fly out of if you book a flight from Southampton to Illinois. It is only a 3.5 mi journey to Eastleigh (SOU) from Southampton’s city center.

  • How long is the flight from Southampton to Illinois?

    Departing from Southampton to Illinois will take you 12h 50m. Southampton and Illinois are separated by a distance of 3921 mi. This flight may include one or multiple stops.

  • Can I find deals for flights from Southampton to Illinois that include hotel bookings?

    Yes. In addition to deals on Southampton to Illinois flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from Southampton to Illinois?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Southampton to Illinois.

  • Can I find deals for business class flights from Southampton to Illinois?

    Yes. Cheapflights offers flight deals from Southampton to Illinois 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 Southampton to Illinois?

    Currently, April is the cheapest month in which you can book a flight from Southampton to Illinois (average of $163). Flying from Southampton to Illinois in July is currently the most expensive (average of $674). 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

Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.

Alternative routes for Southampton to Illinois

See prices for flight routes from nearby airports that may be better suited for you.
Heathrow to John F Kennedy Intl flights
Heathrow to Newark flights
Heathrow to LaGuardia flights
Gatwick to Newark flights
London City to John F Kennedy Intl flights
Gatwick to John F Kennedy Intl flights
Heathrow to Los Angeles flights
Heathrow to Orlando flights
Stansted to John F Kennedy Intl flights
Gatwick to LaGuardia flights
Heathrow to Miami flights
Heathrow to Boston flights
Luton to John F Kennedy Intl flights
Stansted to Newark flights
London City to Newark flights
Luton to Newark flights
Manchester to John F Kennedy Intl flights
Heathrow to San Francisco flights
Manchester to Orlando flights
Heathrow to Las Vegas flights
Heathrow to O'Hare Intl flights
Gatwick to Orlando flights
Heathrow to Seattle flights
Heathrow to Dallas/Fort Worth flights
Heathrow to Hobby flights
Gatwick to Los Angeles flights
Heathrow to Dulles Intl flights
Gatwick to Boston flights
Heathrow to Atlanta flights
Stansted to Los Angeles flights
Gatwick to Miami flights
London City to Los Angeles flights
Heathrow to Tampa flights
Heathrow to Baltimore flights
Heathrow to George Bush Intcntl flights
Stansted to Miami flights
Manchester to Newark flights
London City to Miami flights
Edinburgh to Newark flights
Stansted to Orlando flights
Edinburgh to John F Kennedy Intl flights
Heathrow to Ontario flights
Heathrow to Denver flights
Luton to Miami flights
London City to Boston flights
Manchester to LaGuardia flights
Gatwick to San Francisco flights
Stansted to Boston flights
Heathrow to Fort Lauderdale flights

100% Free

Cheapflights is completely free to use, so you can start saving the moment you arrive.

Book with Flexibility

Our users can plan ahead with confidence and find flights with no change fees

Travel Smart

Millions of people come to us for their flight needs every year. We help make travel planning easy by providing useful insights and data-driven graphs that can inform your decisions.