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Cheap flights from London Southend Airport to Illinois from £370

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 21/9. Fares are subject to change and may not be available on all flights or dates of travel.
SEN — ORD
18 May — 25 May1
1 adult
1 adult, Economy, 0 bags

Cheap flight deals from Southend to Illinois

Enter your travel dates to find the best prices.

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 18 April 2026.

Thu 7/510:10
SEN
-
ORD
2 stops17h 10m
Multiple Airlines
Sun 10/517:10
ORD
-
SEN
1 stop11h 20m
Multiple Airlines
Deal found 18/4£625
Wed 22/408:25
SEN
-
ORD
3 stops44h 42m
Multiple Airlines
Sat 25/416:20
ORD
-
SEN
3 stops25h 00m
Multiple Airlines
Deal found 13/4£681
Sun 20/917:30
SEN
-
ORD
3 stops31h 45m
Multiple Airlines
Sat 26/919:25
ORD
-
SEN
2 stops14h 15m
Multiple Airlines
Deal found 16/4£721
Wed 29/415:40
SEN
-
ORD
2 stops26h 55m
Multiple Airlines
Tue 5/516:05
ORD
-
SEN
2 stops24h 15m
Multiple Airlines
Deal found 18/4£728
Sat 18/417:20
SEN
-
ORD
2 stops28h 40m
Multiple Airlines
Sat 25/416:20
ORD
-
SEN
3 stops25h 00m
Multiple Airlines
Deal found 13/4£834
Sun 31/507:25
SEN
-
ORD
2 stops52h 39m
Multiple Airlines
Sun 7/617:10
ORD
-
SEN
1 stop11h 20m
Multiple Airlines
Deal found 16/4£1,088
Fri 22/511:20
SEN
-
ORD
2 stops16h 00m
Multiple Airlines
Sat 30/517:10
ORD
-
SEN
1 stop11h 15m
Multiple Airlines
Deal found 15/4£1,097
Fri 15/514:30
SEN
-
ORD
2 stops30h 40m
Multiple Airlines
Wed 27/517:10
ORD
-
SEN
1 stop13h 50m
Multiple Airlines
Deal found 14/4£1,107
Sun 19/407:25
SEN
-
ORD
2 stops32h 15m
Multiple Airlines
Thu 23/417:10
ORD
-
SEN
1 stop11h 35m
Multiple Airlines
Deal found 18/4£1,137

Find flight deals from Southend to Illinois

Keep the following information in mind while searching for Southend to Illinois flight deals. Data was last updated 18 April 2026.

Round-trip from

£625

One-way from

£370

Popular in

July

Cheapest in

September

Average price

£539
7/5-10/5
  • 7/5-10/5
  • 3 total stops
  • 28h 30m total
  • London to Illinois
Search Deals
21/9
  • 21/9
  • 2 total stops
  • 41h 25m total
  • London to Illinois
Search Deals
Highest demand for flights based on searches. 11% potential increase in price (£51 potential increase over avg. return price).
Search Deals
Cheapest flight prices on average. 2% potential price decrease (£9 potential savings vs. average return price).
Search Deals
Average for round-trip flights in April 2026
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 18 April 2026.
Use the filters below to find and compare flights from London Southend Airport to Illinois that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest return flight

LondonChicago

SEN - ORD

SENORD

London Southend

Thu 7/5

10:10-21:20

2 stops17h 10m

Chicago O'Hare Intl

Sun 10/5

17:10-10:30

1 stop11h 20m

£625

LondonChicago

SEN - ORD

SENORD

London Southend

Sun 20/9

17:30-19:15

3 stops31h 45m

Chicago O'Hare Intl

Sat 26/9

19:25-15:40

2 stops14h 15m

£721

LondonChicago

SEN - ORD

SENORD

London Southend

Wed 29/4

15:40-12:35

2 stops26h 55m

Chicago O'Hare Intl

Tue 5/5

16:05-22:20

2 stops24h 15m

£728

LondonChicago

SEN - ORD

SENORD

London Southend

Sun 31/5

07:25-06:04

2 stops52h 39m

Chicago O'Hare Intl

Sun 7/6

17:10-10:30

1 stop11h 20m

£1,088
Fastest return journey

LondonChicago

SEN - ORD

SENORD

London Southend

Fri 22/5

11:20-21:20

2 stops16h 00m

Chicago O'Hare Intl

Sat 30/5

17:10-10:25

1 stop11h 15m

£1,097

LondonChicago

SEN - ORD

SENORD

London Southend

Fri 15/5

14:30-15:10

2 stops30h 40m

Chicago O'Hare Intl

Wed 27/5

17:10-13:00

1 stop13h 50m

£1,107

LondonChicago

SEN - ORD

SENORD

London Southend

Tue 2/6

14:40-13:05

2 stops52h 25m

Chicago O'Hare Intl

Tue 9/6

16:20-19:40

1 stop21h 20m

£1,461

LondonChicago

SEN - ORD

SENORD

London Southend

Fri 22/5

14:30-19:50

2 stops35h 20m

Chicago O'Hare Intl

Tue 26/5

16:20-19:40

1 stop21h 20m

£1,594
Cheapest one-way

LondonChicago

SEN - ORD

SENORD

London Southend

Tue 12/5

06:30-16:00

2 stops39h 30m

£376

LondonChicago

SEN - ORD

SENORD

London Southend

Mon 4/5

11:10-15:03

3 stops33h 53m

£382

Flights are sorted by cheapest return flights first.

Deals found on 13/4

Showing 1-10 of 19 resultsSorted by cheapest first
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

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

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

Deals for Southend to Illinois flights are sourced from 900+ travel sites when you use Cheapflights. When all flight results come back, Cheapflights lets you sort and filter flights using different criteria to choose better, like price, airport, cabin class, and plenty of other options.

Why should you use Cheapflights to find cheap flight tickets from 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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