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Southampton

$524+ 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 6/15. Fares are subject to change and may not be available on all flights or dates of travel.
ORD — SOU
Jan 17 — Jan 241
Sat 1/17
Sat 1/24
1 adult, Economy
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Cheap 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 December 18, 2025.

This Delta deal was found by Cheapflights users on 12/17. 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 12/314:25 pmORD - SOU
1 stop9h 55mDelta
Thu 1/85:35 pmSOU - ORD
2 stops34h 17mDelta
Deal found 12/17$854
This Delta deal was found by Cheapflights users on 12/17. 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.
Tue 12/307:00 amORD - SOU
2 stops28h 00mDelta
Thu 1/85:35 pmSOU - ORD
2 stops34h 17mDelta
Deal found 12/17$859
This Delta deal was found by Cheapflights users on 12/17. 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 12/314:25 pmORD - SOU
1 stop9h 55mDelta
Fri 1/99:00 amSOU - ORD
2 stops30h 41mDelta
Deal found 12/17$861
This Delta deal was found by Cheapflights users on 12/17. 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 12/314:25 pmORD - SOU
1 stop19h 00mDelta
Tue 1/65:35 pmSOU - ORD
1 stop26h 45mDelta
Deal found 12/17$862
This Delta deal was found by Cheapflights users on 12/17. 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.
Tue 12/307:00 amORD - SOU
2 stops28h 00mDelta
Tue 1/65:35 pmSOU - ORD
1 stop26h 45mDelta
Deal found 12/17$908
This Delta deal was found by Cheapflights users on 12/17. 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.
Mon 12/294:25 pmORD - SOU
1 stop18h 35mDelta
Thu 1/85:35 pmSOU - ORD
2 stops34h 17mDelta
Deal found 12/17$929
This Delta deal was found by Cheapflights users on 12/17. 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.
Mon 12/294:25 pmORD - SOU
1 stop18h 35mDelta
Fri 1/99:00 amSOU - ORD
2 stops30h 41mDelta
Deal found 12/17$936
This Delta deal was found by Cheapflights users on 12/17. 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.
Mon 12/294:25 pmORD - SOU
1 stop18h 35mDelta
Tue 1/65:35 pmSOU - ORD
1 stop26h 45mDelta
Deal found 12/17$979
This KLM deal was found by Cheapflights users on 12/17. 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 12/219:29 amMDW - SOU
2 stops16h 41mKLM
Tue 12/238:40 amSOU - MDW
2 stops19h 42mKLM
Deal found 12/17$10,854

Find flight deals from Illinois to Southampton

Keep the following information in mind while searching for Illinois to Southampton flight deals. Data was last updated December 18, 2025.

Most accurate provider

Justfly.com
3 stars

Most trusted provider

Justfly.com
3 stars

Round-trip from

$766
(Mytrip)

One-way from

$524
(Kiwi.com)

Popular in

June

Cheapest in

September

Average price

$833
Provider with most accurate pricing for Chicago (CHI)-London (LON) flight deals.
Search Deals
Provider most trusted by Cheapflights users for Chicago (CHI)-London (LON) flights.
Search Deals
From Illinois to Southampton Eastleigh
Search Deals
One-way flight from Illinois to Southampton Eastleigh
Search Deals
Highest demand for flights based on searches. 21% potential increase in price ($204 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 4% potential price decrease ($35 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in December 2025
Search Deals

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 December 18, 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

Wed 2/18

4:25 pm-8:25 am

1 stop10h 00m

Southampton Eastleigh

Thu 2/26

6:05 pm-2:20 pm

1 stop26h 15m

$768

ChicagoSouthampton

ORD - SOU

ORDSOU

Chicago O'Hare Intl

Fri 2/20

10:11 am-5:00 pm

2 stops24h 49m

Southampton Eastleigh

Thu 2/26

6:05 pm-2:20 pm

1 stop26h 15m

$822

ChicagoSouthampton

ORD - SOU

ORDSOU

Chicago O'Hare Intl

Fri 2/20

6:30 am-8:50 am

2 stops20h 20m

Southampton Eastleigh

Fri 2/27

8:40 am-2:20 pm

1 stop11h 40m

$822

ChicagoSouthampton

ORD - SOU

ORDSOU

Chicago O'Hare Intl

Sun 4/12

4:20 pm-4:50 pm

1 stop18h 30m

Southampton Eastleigh

Sat 4/18

5:20 pm-2:15 pm

1 stop26h 55m

$832

ChicagoSouthampton

ORD - SOU

ORDSOU

Chicago O'Hare Intl

Sun 4/12

3:45 pm-8:40 am

1 stop10h 55m

Southampton Eastleigh

Sat 4/18

9:10 am-6:15 pm

2 stops15h 05m

$847

ChicagoSouthampton

ORD - SOU

ORDSOU

Chicago O'Hare Intl

Wed 12/31

4:25 pm-8:20 am

1 stop9h 55m

Southampton Eastleigh

Thu 1/8

5:35 pm-9:52 pm

2 stops34h 17m

$854

ChicagoSouthampton

ORD - SOU

ORDSOU

Chicago O'Hare Intl

Wed 12/31

4:25 pm-5:25 pm

1 stop19h 00m

Southampton Eastleigh

Tue 1/6

5:35 pm-2:20 pm

1 stop26h 45m

$862

ChicagoSouthampton

ORD - SOU

ORDSOU

Chicago O'Hare Intl

Tue 12/30

7:00 am-5:00 pm

2 stops28h 00m

Southampton Eastleigh

Fri 1/9

9:00 am-9:41 am

2 stops30h 41m

$866

ChicagoSouthampton

ORD - SOU

ORDSOU

Chicago O'Hare Intl

Wed 12/31

5:30 am-8:20 am

2 stops20h 50m

Southampton Eastleigh

Fri 1/9

9:00 am-9:41 am

2 stops30h 41m

$866

ChicagoSouthampton

ORD - SOU

ORDSOU

Chicago O'Hare Intl

Sat 1/31

10:24 am-5:15 pm

2 stops24h 51m

Southampton Eastleigh

Sat 2/7

9:25 am-2:20 pm

1 stop10h 55m

$872

Flights are sorted by cheapest round-trip flights first.

Deals found on 12/17

Showing 1-10 of 19 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, June is the cheapest month in which you can book a flight from Illinois to Southampton (average of $375). Flying from Illinois to Southampton in July is currently the most expensive (average of $604). 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 December 18, 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 $768, Delta can have you in Southampton from Illinois in 10h. 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, June is the cheapest month in which you can book a flight from Illinois to Southampton (average of $375). Flying from Illinois to Southampton in July is currently the most expensive (average of $604). 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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Top airline flying from Illinois to Southampton

Discover the top airline 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 December 18, 2025.
AirlineCheapestAverageFlexibilityOn-time
Aer LingusCheapest$623Average$1,150FlexibilityNo cancel feeOn-timeN/A

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