How long is the flight from Southampton to Illinois?

Departing from Southampton to Illinois will take you 11h 45m. The distance between Southampton and Illinois is about 3921 mi. This flight may include one or multiple stops.

In terms of precipitation, rainfall in Illinois ranges from 43.0 - 125.0 inches per month. August is typically the wettest month, when rainfall can reach 125.0 mm. January is typically the driest time to visit Illinois when rainfall is around 43.0 mm.

If weather is an important factor for your trip to Illinois, use this chart to help with planning. For those seeking warmer temperatures, July is the ideal time of year to visit, when temperatures reach an average of 23.0 C. Travellers hoping to avoid the cold should look outside of January, when temperatures are typically at their lowest (around -5.0 C).

What is the cheapest time of day to fly from SOU to IL?

When flying from Southampton to Illinois, the time of day you decide to fly out makes little to no difference towards the overall price you’ll pay on tickets.

What airport do you fly from for flights from Southampton to Illinois?

Southampton Eastleigh (SOU), located 3.5 mi from the city center, is the airport you fly out of when you book flights from Southampton to Illinois.

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 holiday 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.

£622+ Cheap Flights from Southampton to Illinois

Cheap flight deals from Southampton to Illinois

Enter your travel dates to find the best prices.

Cheapest

Best

Last-minute

One-way

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 12 October 2026.

Mon 23/1117:45 -

3 stops29h 35m

Mon 30/1118:30 -

2 stops19h 00m

Deal found 9/10£622

Sun 22/1117:30 -

3 stops29h 50m

Sun 29/1118:30 -

2 stops19h 00m

Deal found 10/10£641

Mon 23/1109:20 -

1 stop15h 00m

Mon 30/1120:05 -

1 stop17h 25m

Deal found 9/10£642

Tue 3/1108:40 -

2 stops17h 58m

Mon 30/1116:25 -

1 stop18h 40m

Deal found 8/10£650

Thu 26/1108:40 -

1 stop11h 45m

Thu 3/1206:00 -

2 stops20h 10m

Deal found 12/10£690

Sun 22/1117:30 -

2 stops32h 47m

Sun 29/1116:25 -

1 stop18h 40m

Deal found 10/10£693

Thu 26/1120:00 -

1 stop23h 20m

Thu 3/1218:30 -

1 stop19h 00m

Deal found 12/10£710

Find flight deals from Southampton to Illinois

Round-trip from	£622
Popular in	August
Cheapest in	February
Average price	£650

23/11-30/11
5 total stops
48h 35m total
Southampton to Illinois

Search Deals

Highest demand for flights based on searches. 11% potential increase in price (£61 potential increase over avg. return price).

Search Deals

Cheapest flight prices on average. 2% potential price decrease (£10 potential savings vs. average return price).

Search Deals

Average for round-trip flights in October 2026

Search Deals

Cheapflights Fare Finder

Use the filters below to find and compare flights from Southampton to Illinois that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest return flight

SouthamptonChicago

SOU Southampton Eastleigh - ORD Chicago O'Hare Intl

SOUORD

Southampton Eastleigh

Mon 23/11

17:45-17:20

3 stops29h 35m

Chicago O'Hare Intl

Mon 30/11

18:30-19:30

2 stops19h 00m

£622

SouthamptonChicago

SOU Southampton Eastleigh - ORD Chicago O'Hare Intl

SOUORD

Southampton Eastleigh

Thu 26/11

08:40-14:25

1 stop11h 45m

Chicago O'Hare Intl

Thu 3/12

06:00-08:10

2 stops20h 10m

£690

SouthamptonChicago

SOU Southampton Eastleigh - ORD Chicago O'Hare Intl

SOUORD

Southampton Eastleigh

Sun 22/11

17:30-20:17

2 stops32h 47m

Chicago O'Hare Intl

Sun 29/11

16:25-17:05

1 stop18h 40m

£693

SouthamptonChicago

SOU Southampton Eastleigh - ORD Chicago O'Hare Intl

SOUORD

Southampton Eastleigh

Tue 3/11

08:40-20:30

2 stops17h 50m

Chicago O'Hare Intl

Mon 30/11

15:59-17:05

2 stops19h 06m

£775

SouthamptonChicago

SOU Southampton Eastleigh - ORD Chicago O'Hare Intl

SOUORD

Southampton Eastleigh

Thu 28/1

09:20-14:41

2 stops35h 21m

Chicago O'Hare Intl

Mon 1/2

20:45-11:50

2 stops33h 05m

£853

SouthamptonChicago

SOU Southampton Eastleigh - ORD Chicago O'Hare Intl

SOUORD

Southampton Eastleigh

Sun 25/10

12:25-15:10

1 stop31h 45m

Chicago O'Hare Intl

Wed 31/12

00:00-07:00

Nonstop0h 00m

£1,095

Fastest return journey

SouthamptonChicago

SOU Southampton Eastleigh - ORD Chicago O'Hare Intl

SOUORD

Southampton Eastleigh

Sat 24/10

17:20-15:10

1 stop27h 50m

Chicago O'Hare Intl

Wed 31/12

00:00-07:00

Nonstop0h 00m

£1,295

Flights are sorted by cheapest return flights first.

Deals found on 10/10

Sorted by cheapest first

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.

SOU-ORD

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 Southampton to Illinois

SOU-USIL

SOU-ORD

No data available for this route at this time. Please check back soon.

Related info for your journey

What airport do you fly from for flights from Southampton to Illinois?
Southampton Eastleigh (SOU), located 3.5 mi from the city center, is the airport you fly out of when you book flights from Southampton to Illinois.
How long is the flight from Southampton to Illinois?
Departing from Southampton to Illinois will take you 11h 45m. The distance between Southampton and Illinois is about 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 holiday 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.

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How does Cheapflights help users find flights from Southampton to Illinois?

Cheapflights helps you search for flights from Southampton to Illinois via 900+ travel sites so you don’t have to. After performing a flight search, users can also filter their flight selection by filtering for price, number of stops, airlines, and so on.

Why should you use Cheapflights to find cheap flight tickets from Southampton to Illinois?

Cheapflights helps you find that perfect flight to Illinois from Southampton by searching from hundreds of airlines and agencies you know and love. We are also free to use, in case you were wondering!

Can Cheapflights find flights from Southampton to Illinois with no change fees?

Users can book flights with no change fees policies with our dedicated filters. Book flights from Southampton to Illinois flexibly with Cheapflights today.

Can Cheapflights notify me if prices for flights from Southampton to Illinois become cheaper?

Not ready to book yet? You can track prices for flights from Southampton to Illinois on Cheapflights with our Price Alert feature and get notified when better prices are available.

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Cheap flights from Southampton to Illinois from £622

This is the cheapest retur flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 23/11. Fares are subject to change and may not be available on all flights or dates of travel.

Cheap flight deals from Southampton to Illinois

Cheapest flights from Southampton to IllinoisExplore 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 12 October 2026.

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 12 October 2026.

Best flights from Southampton to IllinoisDiscover carefully curated flight deals from Southampton to Illinois that have cost, travel time, and stopovers in mind to ensure you get the best travel experience. Data last updated 12 October 2026.

Discover carefully curated flight deals from Southampton to Illinois that have cost, travel time, and stopovers in mind to ensure you get the best travel experience. Data last updated 12 October 2026.

Last-minute flights from Southampton to IllinoisDiscover last-minute flight deals from Southampton to Illinois. Data last updated 12 October 2026 and is based on user searches.

Discover last-minute flight deals from Southampton to Illinois. Data last updated 12 October 2026 and is based on user searches.

One-way flights from Southampton to IllinoisSearch for one-way flight options from Southampton to Illinois. Find affordable one-way fares based on user searches. Data last updated 12 October 2026.

Search for one-way flight options from Southampton to Illinois. Find affordable one-way fares based on user searches. Data last updated 12 October 2026.

Find flight deals from Southampton to Illinois

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Use the filters below to find and compare flights from Southampton to Illinois that are best for you.

Best time to book a flight from Southampton to Illinois

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Cheapflights Insights

Related info for your journey

What airport do you fly from for flights from Southampton to Illinois?

How long is the flight from Southampton to Illinois?

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

How can I find direct flights from Southampton to Illinois?

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

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.

Complete your trip

Complete your trip to Illinois by adding a car hire and/or hotel booking to your travel itinerary.

Direct flights to United States

Book a non-stop flight to one of these other cities located in United States.

Search flights from Southampton to Illinois by cabin class

Find flights from Southampton to Illinois, based on your preferred cabin class, be it economy, premium economy, business, or first class.

Southampton and Illinois flights

Browse other Southampton and Illinois flight options. Last updated on 12 October 2026.

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How does Cheapflights help users find flights from Southampton to Illinois?

Why should you use Cheapflights to find cheap flight tickets from Southampton to Illinois?

Can Cheapflights find flights from Southampton to Illinois with no change fees?

Can Cheapflights notify me if prices for flights from Southampton to Illinois become cheaper?

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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 12 October 2026.

Best flights from Southampton to Illinois
Discover carefully curated flight deals from Southampton to Illinois that have cost, travel time, and stopovers in mind to ensure you get the best travel experience. Data last updated 12 October 2026.

Last-minute flights from Southampton to Illinois
Discover last-minute flight deals from Southampton to Illinois. Data last updated 12 October 2026 and is based on user searches.

One-way flights from Southampton to Illinois
Search for one-way flight options from Southampton to Illinois. Find affordable one-way fares based on user searches. Data last updated 12 October 2026.