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Southampton

$474+ Cheap flights from Illinois to Southampton (SOU)

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 11/23. Fares are subject to change and may not be available on all flights or dates of travel.
ORD — SOU
Nov 29 — Dec 61
Sat 11/29
Sat 12/6
1 adult, Economy
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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 October 30, 2025.

Most accurate provider

Justfly.com
3 stars

Most trusted provider

Justfly.com
3 stars

Round-trip from

$755
(Mytrip)

One-way from

$474
(Delta)

Popular in

June

Cheapest in

February

Average price

$670
Provider with most accurate pricing for Chicago (CHI)-London (LON) flight deals.
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Provider most trusted by Cheapflights users for Chicago (CHI)-London (LON) flights.
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From Illinois to Southampton Eastleigh
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One-way flight from Illinois to Southampton Eastleigh
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Highest demand for flights based on searches. 21% potential increase in price ($202 potential increase over avg. RT price).
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Cheapest flight prices on average. 4% potential price decrease ($36 potential savings vs. average RT price).
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Average for round-trip flights in October 2025
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Find flight deals from Illinois to Southampton

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 October 30, 2025.

This Mytrip deal was found by Cheapflights users on 10/28. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 12/253:50 pmORD - SOU
1 stop10h 55mAer Lingus
Wed 12/3112:25 pmSOU - ORD
1 stop11h 30mAer Lingus
Deal found 10/28$755
This Aer Lingus deal was found by Cheapflights users on 10/30. 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 Aer Lingus is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 12/147:40 pmORD - SOU
1 stop13h 55mAer Lingus
Sun 12/219:30 amSOU - ORD
1 stop14h 25mAer Lingus
Deal found 10/30$954
This Delta deal was found by Cheapflights users on 10/30. 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 11/207:00 amORD - SOU
2 stops19h 05mDelta
Mon 12/16:05 pmSOU - ORD
2 stops29h 41mDelta
Deal found 10/30$1,016
This Delta deal was found by Cheapflights users on 10/30. 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.
Wed 11/194:25 pmORD - SOU
1 stop9h 55mDelta
Mon 12/16:05 pmSOU - ORD
2 stops29h 41mDelta
Deal found 10/30$1,049
This Expedia deal was found by Cheapflights users on 10/28. 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 Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 12/121:14 pmMDW - SOU
2 stops21h 46mMultiple Airlines
Fri 12/198:40 amSOU - MDW
2 stops15h 38mMultiple Airlines
Deal found 10/28$1,500
This KLM deal was found by Cheapflights users on 10/30. 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 12/259:50 amMDW - SOU
2 stops16h 15mKLM
Wed 12/318:40 amSOU - MDW
2 stops19h 42mKLM
Deal found 10/30$2,818
This KLM deal was found by Cheapflights users on 10/30. 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.
Sun 12/1410:49 amMDW - SOU
2 stops15h 21mKLM
Sun 12/219:30 amSOU - MDW
2 stops18h 52mKLM
Deal found 10/30$3,368

Cheapflights Fare Finder

 
Customize 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 2,558,603 searches. Data last updated October 30, 2025.
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

Thu 12/25

3:50 pm-8:45 am

1 stop10h 55m

Southampton Eastleigh

Wed 12/31

12:25 pm-5:55 pm

1 stop11h 30m

$755

ChicagoSouthampton

ORD - SOU

ORDSOU

Chicago O'Hare Intl

Mon 3/23

5:25 pm-5:00 pm

1 stop18h 35m

Southampton Eastleigh

Tue 3/31

5:35 pm-2:20 pm

1 stop26h 45m

$769

ChicagoSouthampton

ORD - SOU

ORDSOU

Chicago O'Hare Intl

Tue 3/24

10:40 am-8:10 am

2 stops16h 30m

Southampton Eastleigh

Tue 3/31

5:35 pm-2:20 pm

1 stop26h 45m

$774

ChicagoSouthampton

ORD - SOU

ORDSOU

Chicago O'Hare Intl

Mon 3/23

5:25 pm-5:00 pm

1 stop18h 35m

Southampton Eastleigh

Wed 4/1

9:20 am-2:20 pm

1 stop11h 00m

$785

ChicagoSouthampton

ORD - SOU

ORDSOU

Chicago O'Hare Intl

Tue 3/24

1:35 pm-8:10 am

2 stops13h 35m

Southampton Eastleigh

Wed 4/1

9:20 am-2:20 pm

1 stop11h 00m

$790

ChicagoSouthampton

ORD - SOU

ORDSOU

Chicago O'Hare Intl

Mon 3/23

5:25 pm-5:00 pm

1 stop18h 35m

Southampton Eastleigh

Thu 4/2

5:35 pm-4:37 pm

2 stops29h 02m

$795

ChicagoSouthampton

ORD - SOU

ORDSOU

Chicago O'Hare Intl

Tue 3/24

1:35 pm-8:10 am

2 stops13h 35m

Southampton Eastleigh

Thu 4/2

5:35 pm-4:37 pm

2 stops29h 02m

$800

ChicagoSouthampton

ORD - SOU

ORDSOU

Chicago O'Hare Intl

Mon 3/23

5:25 pm-5:00 pm

1 stop18h 35m

Southampton Eastleigh

Sun 3/29

5:35 pm-2:20 pm

1 stop26h 45m

$819

ChicagoSouthampton

ORD - SOU

ORDSOU

Chicago O'Hare Intl

Wed 2/25

4:25 pm-8:20 am

1 stop9h 55m

Southampton Eastleigh

Sun 3/1

9:30 am-2:20 pm

1 stop10h 50m

$828

ChicagoSouthampton

MDW - SOU

MDWSOU

Chicago Midway

Wed 2/25

9:20 am-5:25 pm

2 stops26h 05m

Southampton Eastleigh

Sun 3/1

5:45 pm-6:34 pm

2 stops30h 49m

$843

Flights are sorted by cheapest round-trip flights first.

Deals found on 10/30

Showing 1-10 of 16 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 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 Illinois to Southampton

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

Currently, May is the cheapest month in which you can book a flight from Illinois to Southampton (average of $397). Flying from Illinois to Southampton in July is currently the most expensive (average of $611). 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.

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

Find hourly flight availability from Illinois to Southampton. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated October 30, 2025.

It’s optimal to fly from Illinois to Southampton in the evening. By choosing this option you can save up to 47% on the cost of your flight, compared to a flight at noon.

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?

    For as low as $755, Aer Lingus can have you in Southampton from Illinois in 10h 55m. Airlines will cover a distance of 3921 mi. Both multi-stop and nonstop flights can be found to your destination and back.

  • 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 vacation 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, May is the cheapest month in which you can book a flight from Illinois to Southampton (average of $397). Flying from Illinois to Southampton in July is currently the most expensive (average of $611). 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

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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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Top 2 airlines flying from Illinois to Southampton

Discover the top 2 airlines that operate flights from Illinois to Southampton. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated October 30, 2025.
AirlineCheapestAverageFlexibilityOn-time
Aer LingusCheapest$623Average$1,150FlexibilityNo cancel feeOn-timeN/A
KLMCheapest$903Average$1,135FlexibilityNo cancel feeOn-time75%

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