What are the cheapest airlines to fly from Illinois to Southampton one-way?

One-way options have recently been found by users for as low as £371 on Delta. Other airlines that offer cheap prices include Aer Lingus from £610 and Air Canada from £646 one-way.

How far in advance should I book a flight from Illinois to Southampton?

Travelers have found it’s best to book a flight 60 days in advance to save up to 7% compared to booking the same week of travel. As your travel date approaches, the cost of this flight route may potentially increase. While opting to book 60 days out may not be an option for all, there are still additional ways to secure a deal in the near future. You might find a flight from Illinois to Southampton 1-2 weeks in advance for as low as £536, or £539 for flights within the next 24 hours.

What is the cheapest month to fly from Illinois to Southampton?

The best pricing can be found in the month of February. Prices to Southampton from Illinois average £561. You can even find prices in February for less than £561, as users have found deals to Southampton from as low as £354. The month of June appears to be one of the more expensive times to travel to Southampton from Illinois. Flying in the targeted month can save you up to 32%.

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

Regardless of the time of day you decide to fly, the ticket price will remain around the same. Book flights from Illinois to Southampton as you normally would.

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.

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.

£371+ Flights from Illinois to Southampton

Cheap flight deals from Illinois to Southampton

Round-trip from	£806
One-way from	£371
Popular in	June
Cheapest in	February
Average price	£561

KLM
10/6-17/6
2 total stops
45h 15m total
Illinois to Southampton

Search Deals

Delta
3/9
2 total stops
24h 25m total
Illinois to Southampton

Search Deals

Highest demand for flights based on searches. 17% potential increase in price (£86 potential increase over avg. return price).

Search Deals

Cheapest flight prices on average. 3% potential price decrease (£13 potential savings vs. average return price).

Search Deals

Average for round-trip flights in May 2025

Search Deals

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 1 May 2025.

Sun 7/916:20ORD - SOU

1 stop10h 25mDelta

Wed 24/909:20SOU - ORD

1 stop11h 20mDelta

Deal found 30/4£600

Thu 4/916:20ORD - SOU

1 stop18h 40mVirgin Atlantic

Sat 13/909:20SOU - ORD

2 stops18h 42mVirgin Atlantic

Deal found 30/4£683

Tue 10/616:20ORD - SOU

1 stop18h 40mKLM

Tue 17/617:35SOU - ORD

1 stop26h 35mKLM

Deal found 30/4£806

Tue 10/618:20MDW - SOU

2 stops16h 40mDelta

Tue 17/609:20SOU - MDW

2 stops15h 21mDelta

Deal found 30/4£817

Sat 5/710:46ORD - SOU

3 stops21h 34mMultiple Airlines

Sun 13/714:50SOU - ORD

2 stops38h 20mMultiple Airlines

Deal found 30/4£847

Wed 14/521:15ORD - SOU

1 stop13h 20mAer Lingus

Wed 21/520:00SOU - ORD

1 stop24h 00mAer Lingus

Deal found 30/4£906

Thu 18/1215:40MDW - SOU

2 stops19h 10mVirgin Atlantic

Fri 9/109:00SOU - MDW

2 stops18h 46mVirgin Atlantic

Deal found 30/4£1,167

Wed 10/922:35ORD - SOU

2 stops14h 50mBritish Airways

Sun 14/909:10SOU - ORD

1 stop15h 50mBritish Airways

Deal found 30/4£1,594

Thu 3/713:09MDW - SOU

2 stops13h 36mKLM

Mon 14/709:20SOU - MDW

2 stops15h 20mKLM

Deal found 30/4£1,613

Best flights from Illinois to Southampton
Discover carefully curated flight deals from Illinois to Southampton that have cost, travel time, and stopovers in mind to ensure you get the best travel experience. Data last updated 1 May 2025.

Tue 10/616:20ORD - SOU

1 stop18h 40mKLM

Tue 17/617:35SOU - ORD

1 stop26h 35mKLM

Deal found 30/4£806

Wed 28/516:20ORD - SOU

1 stop10h 25mDelta

Wed 11/617:35SOU - ORD

1 stop26h 35mDelta

Deal found 30/4£807

Sat 5/710:46ORD - SOU

3 stops21h 34mMultiple Airlines

Sun 13/714:50SOU - ORD

2 stops38h 20mMultiple Airlines

Deal found 30/4£847

Wed 14/521:15ORD - SOU

1 stop13h 20mAer Lingus

Wed 21/520:00SOU - ORD

1 stop24h 00mAer Lingus

Deal found 30/4£906

Sat 14/616:20ORD - SOU

1 stop10h 25mVirgin Atlantic

Sat 21/609:20SOU - ORD

1 stop10h 50mVirgin Atlantic

Deal found 30/4£985

Tue 13/521:15ORD - SOU

2 stops16h 10mBritish Airways

Tue 20/509:10SOU - ORD

1 stop15h 50mBritish Airways

Deal found 29/4£1,616

Tue 10/618:20MDW - SOU

2 stops16h 40mDelta

Tue 17/609:20SOU - MDW

2 stops15h 21mDelta

Deal found 30/4£817

Sat 14/609:24MDW - SOU

2 stops17h 21mVirgin Atlantic

Sat 21/618:05SOU - MDW

2 stops29h 57mVirgin Atlantic

Deal found 30/4£1,340

Thu 3/713:09MDW - SOU

2 stops13h 36mKLM

Mon 14/709:20SOU - MDW

2 stops15h 20mKLM

Deal found 30/4£1,613

Last-minute flights from Illinois to Southampton
Discover last-minute flight deals from Illinois to Southampton. Data last updated 1 May 2025 and is based on user searches.

Tue 13/521:15ORD - SOU

2 stops16h 10mBritish Airways

Tue 20/509:10SOU - ORD

1 stop15h 50mBritish Airways

Deal found 29/4£1,616

Wed 14/521:15ORD - SOU

1 stop13h 20mAer Lingus

Wed 21/520:00SOU - ORD

1 stop24h 00mAer Lingus

Deal found 30/4£906

Fri 23/511:05ORD - SOU

2 stops15h 40mKLM

Fri 6/609:20SOU - ORD

2 stops15h 17mKLM

Deal found 30/4£909

Wed 28/516:20ORD - SOU

1 stop10h 25mDelta

Wed 11/617:35SOU - ORD

1 stop26h 35mDelta

Deal found 30/4£807

One-way flights from Illinois to Southampton
Search for one-way flight options from Illinois to Southampton. Find affordable one-way fares based on user searches. Data last updated 1 May 2025.

Wed 3/910:35MDW - SOU

2 stops24h 25mDelta

Deal found 29/4£371

Sat 31/515:05ORD - SOU

2 stops36h 05mAer Lingus

Deal found 30/4£610

Sat 14/610:40ORD - SOU

2 stops22h 50mAir Canada

Deal found 30/4£646

Sat 14/616:20ORD - SOU

1 stop10h 25mVirgin Atlantic

Deal found 30/4£650

Sat 14/609:24MDW - SOU

2 stops17h 21mVirgin Atlantic

Deal found 30/4£650

Sat 31/516:20ORD - SOU

1 stop10h 25mKLM

Deal found 30/4£662

Sat 31/513:08MDW - SOU

2 stops13h 37mKLM

Deal found 30/4£666

Cheapflights Fare Finder

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

Fly from

Fly to

Route

Depart

Return

Price

ChicagoSouthampton

ORD - SOU

ORDSOU

Chicago O'Hare Intl

Tue 10/6

16:20-17:00

1 stop18h 40m

Southampton Eastleigh

Tue 17/6

17:35-14:10

1 stop26h 35m

£806

ChicagoSouthampton

ORD - SOU

ORDSOU

Chicago O'Hare Intl

Wed 28/5

16:20-08:45

1 stop10h 25m

Southampton Eastleigh

Thu 12/6

09:20-14:10

1 stop10h 50m

£807

ChicagoSouthampton

MDW - SOU

MDWSOU

Chicago Midway

Tue 10/6

18:20-17:00

2 stops16h 40m

Southampton Eastleigh

Tue 17/6

09:20-18:41

2 stops15h 21m

£817

ChicagoSouthampton

ORD - SOU

ORDSOU

Chicago O'Hare Intl

Sat 5/7

10:46-14:20

3 stops21h 34m

Southampton Eastleigh

Sun 13/7

14:50-23:10

2 stops38h 20m

£847

ChicagoSouthampton

ORD - SOU

ORDSOU

Chicago O'Hare Intl

Wed 14/5

21:15-16:35

1 stop13h 20m

Southampton Eastleigh

Wed 21/5

20:00-14:00

1 stop24h 00m

£906

ChicagoSouthampton

ORD - SOU

ORDSOU

Chicago O'Hare Intl

Sat 14/6

16:20-08:45

1 stop10h 25m

Southampton Eastleigh

Sat 21/6

09:20-14:10

1 stop10h 50m

£985

ChicagoSouthampton

MDW - SOU

MDWSOU

Chicago Midway

Sat 14/6

09:24-08:45

2 stops17h 21m

Southampton Eastleigh

Sat 21/6

18:05-18:02

2 stops29h 57m

£1,340

ChicagoSouthampton

MDW - SOU

MDWSOU

Chicago Midway

Thu 3/7

13:09-08:45

2 stops13h 36m

Southampton Eastleigh

Mon 14/7

09:20-18:40

2 stops15h 20m

£1,613

ChicagoSouthampton

ORD - SOU

ORDSOU

Chicago O'Hare Intl

Tue 13/5

21:15-19:25

2 stops16h 10m

Southampton Eastleigh

Tue 20/5

09:10-19:00

1 stop15h 50m

£1,616

ChicagoSouthampton

MDW - SOU

MDWSOU

Chicago Midway

Wed 3/9

10:35-17:00

2 stops24h 25m

£371

Flights are sorted by cheapest return flights first.

Deals found on 29/4

Showing 1-10 of 16 results

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, September is the cheapest month in which you can book a flight from Illinois to Southampton (average of £203). Flying from Illinois to Southampton in November is currently the most expensive (average of £262). 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.

Rainfall in Southampton by month

In terms of precipitation, rainfall in Southampton ranges from 25.0 - 76.0 inches per month. December is typically the wettest month, when rainfall can reach 76.0 mm. July is typically the driest time to visit Southampton when rainfall is around 25.0 mm.

Temperature in Southampton by month

If weather is an important factor for your trip to Southampton, 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 18.0 C. Travellers hoping to avoid the cold should look outside of December, when temperatures are typically at their lowest (around 4.0 C).

Reviews of airlines servicing Southampton

Get a feel of what it's like to fly with Delta, KLM and Virgin Atlantic from Illinois to Southampton by reading reviews from past customers. Users have also rated airlines in terms of entertainment options, comfort, food, crew/service, and boarding process.

Delta

8.0

Very Good

7,934 reviews

Check prices

Reviews

1 / 20

10.0

Excellent

Aaron,Oct 2024

LAX - LHR

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.

Delta

8.0

Very Good

7,934 reviews

Delta

8.0

Very Good

7,934 reviews

Check prices

Reviews

1 / 20

10.0

Excellent

Aaron,Oct 2024

LAX - LHR

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.

KLM

7.8

Good

1,334 reviews

Delta

8.0

Very Good

7,934 reviews

Check prices

Reviews

1 / 20

10.0

Excellent

Aaron,Oct 2024

LAX - LHR

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.

Virgin Atlantic

7.4

Good

643 reviews

Delta

8.0

Very Good

7,934 reviews

Check prices

Reviews

1 / 20

10.0

Excellent

Aaron,Oct 2024

LAX - LHR

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.

Air Canada

7.0

Good

9,245 reviews

Delta

8.0

Very Good

7,934 reviews

Check prices

Reviews

1 / 20

10.0

Excellent

Aaron,Oct 2024

LAX - LHR

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.

Aer Lingus

7.0

Good

1,076 reviews

Delta

8.0

Very Good

7,934 reviews

Check prices

Reviews

1 / 20

10.0

Excellent

Aaron,Oct 2024

LAX - LHR

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.

Related info for your journey

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.
What are the cheapest airlines to fly from Illinois to Southampton one-way?
One-way options have recently been found by users for as low as £371 on Delta. Other airlines that offer cheap prices include Aer Lingus from £610 and Air Canada from £646 one-way.
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, September is the cheapest month in which you can book a flight from Illinois to Southampton (average of £203). Flying from Illinois to Southampton in November is currently the most expensive (average of £262). 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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How does Cheapflights help users find flights from Illinois to Southampton?

900+ travel sites are searched through when a user searches for a flight using Cheapflights. From the search interface, users can use filters to choose airlines, airports, flight times, cabin classes and more to their preference. Book your flight to Southampton from Illinois today with Cheapflights!

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

By finding flights from multiple airlines and providers at completely no cost, Cheapflights helps millions of users like you annually find the best flights to Southampton from Illinois.

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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Cheap flights from Illinois to Southampton from £371

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 3/9. Fares are subject to change and may not be available on all flights or dates of travel.

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 1 May 2025.

Round-trip from

One-way from

Popular in

Cheapest in

Average price

Find flight deals from Illinois to Southampton

Cheapest flights from Illinois to SouthamptonExplore 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 1 May 2025.

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 1 May 2025.

Cheapflights Fare Finder

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

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.

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?

Rainfall in Southampton by month

Plan your trip to Southampton by taking into account the average rainfall totals by month.

Temperature in Southampton by month

Plan your trip to Southampton by taking into account the average temperature totals by month.

Reviews of airlines servicing Southampton

Get a feel of what it's like to fly with Delta, KLM and Virgin Atlantic from Illinois to Southampton by reading reviews from past customers. Users have also rated airlines in terms of entertainment options, comfort, food, crew/service, and boarding process.

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?

What are the cheapest airlines to fly from Illinois to Southampton one-way?

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

How can I find direct flights from Illinois to Southampton?

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

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

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 Illinois to Southampton

See prices for flight routes from nearby airports that may be better suited for you.

Fly with Cheapflights

Find the best flight deals on Cheapflights, where travellers can enjoy low prices and a wide availability of flights to their desired destinations.

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

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

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

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

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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 1 May 2025.