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Cheap flights from London Southend Airport to Illinois from £428

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 25/11. Fares are subject to change and may not be available on all flights or dates of travel.
SEN — ORD
21 Dec — 28 Dec1
1 adult
1 adult, Economy, 0 bags

Find flight deals from Southend to Illinois

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Cheapest flights from Southend to Illinois
Explore the most affordable flight options available from Southend to Illinois. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 21 November 2025.

Sat 22/1106:30SEN - ORD
3 stops38h 15mMultiple Airlines
Sun 7/1218:30ORD - SEN
3 stops22h 30mMultiple Airlines
Deal found 19/11£619
Sat 20/1206:40SEN - ORD
3 stops38h 05mMultiple Airlines
Sat 10/118:30ORD - SEN
3 stops20h 20mMultiple Airlines
Deal found 20/11£837
Wed 26/1107:10SEN - ORD
2 stops16h 10mMultiple Airlines
Sun 30/1117:20ORD - SEN
1 stop11h 10mMultiple Airlines
Deal found 19/11£950
Fri 19/1206:40SEN - ORD
1 stop13h 40mMultiple Airlines
Sun 4/116:25ORD - SEN
1 stop16h 25mMultiple Airlines
Deal found 20/11£1,002
Wed 17/1207:10SEN - ORD
2 stops16h 10mMultiple Airlines
Sat 3/116:20ORD - SEN
2 stops22h 30mMultiple Airlines
Deal found 20/11£1,009
Sat 20/1207:15SEN - ORD
2 stops16h 40mMultiple Airlines
Sun 4/119:40ORD - SEN
2 stops13h 10mMultiple Airlines
Deal found 19/11£1,082
Sat 20/1207:15SEN - ORD
1 stop13h 05mMultiple Airlines
Thu 1/112:30ORD - SEN
2 stops14h 40mMultiple Airlines
Deal found 19/11£1,595

Cheap flight deals from Southend to Illinois

Keep the following information in mind while searching for Southend to Illinois flight deals. Data was last updated 21 November 2025.

Round-trip from

£552

One-way from

£428

Popular in

July

Cheapest in

February

Average price

£474
2/12-9/12
  • 2/12-9/12
  • 6 total stops
  • 59h 35m total
  • London to Illinois
Search Deals
25/11
  • 25/11
  • 3 total stops
  • 32h 00m total
  • London to Illinois
Search Deals
Highest demand for flights based on searches. 13% potential increase in price (£62 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 November 2025
Search Deals

Cheapflights Fare Finder

 
Customise your flight search to find flights from Southend 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 858,174 searches. Data last updated 21 November 2025.
Use the filters below to find and compare flights from London Southend Airport to Illinois that are best for you.

Fly from

Southend

Fly to

Illinois

Route

Depart

Return

Price

LondonChicago

SEN - ORD

SENORD

London Southend

Sun 8/3

17:25-17:45

2 stops29h 20m

Chicago O'Hare Intl

Sat 14/3

20:20-20:10

2 stops18h 50m

£641

LondonChicago

SEN - ORD

SENORD

London Southend

Sun 11/1

07:10-22:37

3 stops45h 27m

Chicago O'Hare Intl

Thu 15/1

15:35-12:50

2 stops15h 15m

£648

LondonChicago

SEN - ORD

SENORD

London Southend

Sat 20/12

06:40-14:45

3 stops38h 05m

Chicago O'Hare Intl

Sat 10/1

18:30-20:50

3 stops20h 20m

£837

LondonChicago

SEN - ORD

SENORD

London Southend

Fri 19/12

06:40-14:20

1 stop13h 40m

Chicago O'Hare Intl

Sun 4/1

16:25-14:50

1 stop16h 25m

£1,002

LondonChicago

SEN - ORD

SENORD

London Southend

Wed 17/12

07:10-17:20

2 stops16h 10m

Chicago O'Hare Intl

Sat 3/1

16:20-20:50

2 stops22h 30m

£1,009

LondonChicago

SEN - ORD

SENORD

London Southend

Sat 20/12

07:15-17:55

2 stops16h 40m

Chicago O'Hare Intl

Sun 4/1

19:40-14:50

2 stops13h 10m

£1,082

LondonChicago

SEN - ORD

SENORD

London Southend

Sat 3/1

07:15-04:36

3 stops27h 21m

Chicago O'Hare Intl

Sat 10/1

18:30-20:50

3 stops20h 20m

£1,350

LondonChicago

SEN - ORD

SENORD

London Southend

Sat 20/12

07:15-14:20

1 stop13h 05m

Chicago O'Hare Intl

Thu 1/1

12:30-09:10

2 stops14h 40m

£1,595

LondonChicago

SEN - ORD

SENORD

London Southend

Sat 3/1

07:15-14:20

1 stop13h 05m

Chicago O'Hare Intl

Wed 7/1

18:30-17:15

2 stops16h 45m

£1,887

LondonChicago

SEN - ORD

SENORD

London Southend

Tue 25/11

13:00-15:00

3 stops32h 00m

£428

Flights are sorted by cheapest return flights first.

Deals found on 20/11

Showing 1-10 of 18 results
1
2

Best time to book a flight from Southend to Illinois

Have a flexible travel schedule? Discover the best time to fly to Illinois from Southend 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 London Southend Airport to Illinois
No data available for this route at this time. Please check back soon.

Related info for your journey

Find useful and relevant information for your journey from Southend to Illinois. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

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

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

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

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

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

    Yes. Cheapflights offers flight deals from Southend 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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Alternative routes for Southend to Illinois

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

Need flexible booking options for your flight to Illinois from Southend? 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 Southend to Illinois become cheaper?

Yes, Cheapflights has a feature called Price Alert, which notifies users when flight prices change. Track prices for your flight to Illinois from Southend today and book when prices fit your budget.

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