Find flights
When to book

Cheap flights from London Southend Airport to Illinois from £376

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 1/10. Fares are subject to change and may not be available on all flights or dates of travel.
SEN — ORD
6 Sep — 13 Sep1
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 7 August 2026.

Sun 6/907:25 -
1 stop13h 45m
Sun 13/917:10 -
1 stop11h 20m
Deal found 6/8£614
Sun 6/907:25 -
1 stop13h 45m
Sat 12/917:10 -
1 stop11h 15m
Deal found 7/8£673
Sun 30/807:35 -
3 stops37h 20m
Sun 6/917:10 -
1 stop11h 20m
Deal found 2/8£859
Fri 20/1114:25 -
2 stops29h 35m
Sat 21/1118:30 -
2 stops18h 15m
Deal found 5/8£892
Mon 24/811:10 -
2 stops16h 15m
Sat 29/822:25 -
2 stops14h 55m
Deal found 6/8£960
Sun 16/807:35 -
3 stops44h 30m
Wed 9/915:45 -
2 stops15h 15m
Deal found 4/8£995
Mon 10/816:10 -
2 stops30h 00m
Thu 13/819:15 -
2 stops17h 55m
Deal found 3/8£1,050
Sun 9/811:00 -
3 stops34h 10m
Wed 9/915:45 -
2 stops15h 15m
Deal found 4/8£1,076
Sat 19/1207:15 -
1 stop13h 10m
Fri 1/112:15 -
2 stops15h 40m
Deal found 3/8£1,096
Sun 16/807:35 -
3 stops44h 30m
Tue 25/817:10 -
1 stop12h 35m
Deal found 4/8£1,113

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 7 August 2026.

Round-trip from

£614

One-way from

£376

Popular in

July

Cheapest in

February

Average price

£669
6/9-13/9
  • 6/9-13/9
  • 2 total stops
  • 25h 05m total
  • London to Illinois
Search Deals
1/10
  • 1/10
  • 2 total stops
  • 26h 40m total
  • London to Illinois
Search Deals
Highest demand for flights based on searches. 16% potential increase in price (£83 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 August 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 7 August 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 London Southend - ORD Chicago O'Hare Intl

SENORD

London Southend

Sun 6/9

07:25-15:10

1 stop13h 45m

Chicago O'Hare Intl

Sun 13/9

17:10-10:30

1 stop11h 20m

£614
Fastest return journey

LondonChicago

SEN London Southend - ORD Chicago O'Hare Intl

SENORD

London Southend

Sun 6/9

07:25-15:10

1 stop13h 45m

Chicago O'Hare Intl

Sat 12/9

17:10-10:25

1 stop11h 15m

£673

LondonChicago

SEN London Southend - ORD Chicago O'Hare Intl

SENORD

London Southend

Sun 30/8

07:35-14:55

3 stops37h 20m

Chicago O'Hare Intl

Sun 6/9

17:10-10:30

1 stop11h 20m

£859

LondonChicago

SEN London Southend - ORD Chicago O'Hare Intl

SENORD

London Southend

Mon 24/8

11:10-21:25

2 stops16h 15m

Chicago O'Hare Intl

Sat 29/8

22:25-19:20

2 stops14h 55m

£960

LondonChicago

SEN London Southend - ORD Chicago O'Hare Intl

SENORD

London Southend

Sun 16/8

07:35-22:05

3 stops44h 30m

Chicago O'Hare Intl

Wed 9/9

15:45-13:00

2 stops15h 15m

£995

LondonChicago

SEN London Southend - ORD Chicago O'Hare Intl

SENORD

London Southend

Sun 16/8

07:35-22:05

3 stops44h 30m

Chicago O'Hare Intl

Tue 25/8

17:10-11:45

1 stop12h 35m

£1,113

LondonChicago

SEN London Southend - ORD Chicago O'Hare Intl

SENORD

London Southend

Mon 10/8

16:10-16:10

2 stops30h 00m

Chicago O'Hare Intl

Thu 13/8

19:15-19:10

2 stops17h 55m

£1,114

LondonChicago

SEN London Southend - ORD Chicago O'Hare Intl

SENORD

London Southend

Fri 4/9

11:20-15:10

1 stop33h 50m

Chicago O'Hare Intl

Fri 11/9

22:25-10:25

2 stops30h 00m

£1,507

LondonChicago

SEN London Southend - ORD Chicago O'Hare Intl

SENORD

London Southend

Mon 10/8

11:10-21:25

2 stops16h 15m

Chicago O'Hare Intl

Sun 16/8

17:10-10:30

1 stop11h 20m

£1,774
Cheapest one-way

LondonChicago

SEN London Southend - ORD Chicago O'Hare Intl

SENORD

London Southend

Mon 7/12

11:35-17:20

3 stops35h 45m

£377

Flights are sorted by cheapest return flights first.

Deals found on 5/8

Showing 1-10 of 20 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.

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 Southend to Illinois

See prices for flight routes from nearby airports that may be better suited for you.
Heathrow to John F Kennedy Intl flights
Heathrow to Newark flights
Heathrow to LaGuardia flights
Gatwick to John F Kennedy Intl flights
Gatwick to Newark flights
London City to John F Kennedy Intl flights
Stansted to John F Kennedy Intl flights
Heathrow to Orlando flights
Heathrow to Miami flights
Heathrow to Los Angeles flights
Gatwick to LaGuardia flights
Luton to John F Kennedy Intl flights
Stansted to Newark flights
Luton to Newark flights
London City to Newark flights
Heathrow to San Francisco flights
Heathrow to Boston flights
Heathrow to Dallas/Fort Worth flights
Heathrow to Las Vegas flights
Heathrow to O'Hare Intl flights
Gatwick to Orlando flights
Heathrow to Dulles Intl flights
Heathrow to Atlanta flights
Stansted to Orlando flights
Gatwick to Miami flights
Heathrow to Baltimore flights
Stansted to Miami flights
Heathrow to Hobby flights
Gatwick to Los Angeles flights
Heathrow to Seattle flights
London City to Miami flights
London City to Orlando flights
Heathrow to Tampa flights
London City to Los Angeles flights
Stansted to Los Angeles flights
Gatwick to Boston flights
Heathrow to George Bush Intcntl flights
Luton to Miami flights
Luton to Los Angeles flights
Gatwick to San Francisco flights
Heathrow to Denver flights
Heathrow to Ontario flights
Luton to Orlando flights
Gatwick to Las Vegas flights
Stansted to San Francisco flights
London City to Boston flights
London City to San Francisco flights
Gatwick to O'Hare Intl flights
Gatwick to Dulles Intl flights
Heathrow to Austin flights

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 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?

Cheapflights simply makes it quick and affordable to book flights from Southend to Illinois by bringing together all flight options from hundreds of airlines and agencies online — and put it in one place for you to choose from. Plus, Cheapflights is 100% free to use for all.

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.

100% Free

Cheapflights is completely free to use, so you can start saving the moment you arrive.

Book with Flexibility

Our users can plan ahead with confidence and find flights with no change fees

Travel Smart

Millions of people come to us for their flight needs every year. We help make travel planning easy by providing useful insights and data-driven graphs that can inform your decisions.