In terms of precipitation, rainfall in London Southend Airport ranges from 40.0 - 70.0 inches per month. January is typically the wettest month, when rainfall can reach 70.0 mm. July is typically the driest time to visit London Southend Airport when rainfall is around 40.0 mm.

If weather is an important factor for your trip to London Southend Airport, 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 17.0 C. Travellers hoping to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 4.0 C).

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

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

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

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

How can I find direct flights from Illinois to Southend?

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

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

Yes. Cheapflights offers flight deals from Illinois to Southend by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

£247+ Cheap Flights from Illinois to London Southend Airport

Cheap flight deals from Illinois to Southend

Enter your travel dates to find the best prices.

Cheapest

Best

Last-minute

One-way

Cheapest flights from Illinois to Southend
Explore the most affordable flight options available from Illinois to Southend. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 13 September 2026.

Sun 25/1019:30 -

2 stops14h 20m

Fri 30/1006:55 -

2 stops16h 25m

Deal found 9/9£551

Wed 2/1218:30 -

2 stops18h 05m

Wed 9/1207:10 -

2 stops16h 10m

Deal found 9/9£565

Sat 10/1014:40 -

2 stops26h 40m

Sat 17/1016:50 -

2 stops26h 05m

Deal found 10/9£582

Fri 18/914:20 -

2 stops25h 25m

Tue 22/906:30 -

2 stops19h 42m

Deal found 12/9£602

Fri 25/919:25 -

2 stops20h 20m

Wed 30/908:25 -

2 stops19h 00m

Deal found 8/9£662

Tue 22/1213:55 -

2 stops14h 05m

Wed 30/1207:10 -

2 stops18h 48m

Deal found 11/9£816

Sat 19/1210:05 -

2 stops30h 10m

Thu 24/1217:20 -

2 stops28h 10m

Deal found 9/9£1,016

Wed 11/1116:05 -

2 stops20h 30m

Thu 26/1119:10 -

2 stops24h 35m

Deal found 9/9£1,152

Wed 30/915:35 -

1 stop14h 00m

Sun 4/1007:00 -

2 stops18h 55m

Deal found 11/9£1,910

Find flight deals from Illinois to Southend

Round-trip from	£551
One-way from	£247
Popular in	June
Cheapest in	February
Average price	£659

25/10-30/10
4 total stops
30h 45m total
Illinois to London

Search Deals

19/10-31/12
3 total stops
38h 45m total
Illinois to London

Search Deals

Highest demand for flights based on searches. 22% potential increase in price (£137 potential increase over avg. return price).

Search Deals

Cheapest flight prices on average. 6% potential price decrease (£27 potential savings vs. average return price).

Search Deals

Average for round-trip flights in September 2026

Search Deals

Cheapflights Fare Finder

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

Fly from

Fly to

Route

Depart

Return

Price

Cheapest return flight

ChicagoLondon

ORD Chicago O'Hare Intl - SEN London Southend

ORDSEN

Chicago O'Hare Intl

Wed 25/11

18:30-13:45

3 stops37h 15m

London Southend

Wed 31/12

00:00-17:00

Nonstop0h 00m

£259

ChicagoLondon

ORD Chicago O'Hare Intl - SEN London Southend

ORDSEN

Chicago O'Hare Intl

Sun 27/9

22:25-07:55

3 stops51h 30m

London Southend

Wed 31/12

00:00-17:00

Nonstop0h 00m

£270

ChicagoLondon

ORD Chicago O'Hare Intl - SEN London Southend

ORDSEN

Chicago O'Hare Intl

Sun 31/1

18:30-13:50

3 stops37h 20m

London Southend

Wed 31/12

00:00-17:00

Nonstop0h 00m

£271

ChicagoLondon

ORD Chicago O'Hare Intl - SEN London Southend

ORDSEN

Chicago O'Hare Intl

Fri 27/11

18:30-22:40

3 stops22h 10m

London Southend

Wed 31/12

00:00-17:00

Nonstop0h 00m

£279

ChicagoLondon

ORD Chicago O'Hare Intl - SEN London Southend

ORDSEN

Chicago O'Hare Intl

Wed 30/9

22:25-12:15

3 stops31h 50m

London Southend

Wed 31/12

00:00-17:00

Nonstop0h 00m

£281

Fastest return journey

ChicagoLondon

ORD Chicago O'Hare Intl - SEN London Southend

ORDSEN

Chicago O'Hare Intl

Wed 4/11

18:30-18:35

2 stops18h 05m

London Southend

Wed 31/12

00:00-17:00

Nonstop0h 00m

£290

ChicagoLondon

ORD Chicago O'Hare Intl - SEN London Southend

ORDSEN

Chicago O'Hare Intl

Fri 13/11

18:30-22:55

3 stops22h 25m

London Southend

Wed 31/12

00:00-17:00

Nonstop0h 00m

£293

ChicagoLondon

ORD Chicago O'Hare Intl - SEN London Southend

ORDSEN

Chicago O'Hare Intl

Fri 16/10

19:25-21:45

3 stops20h 20m

London Southend

Wed 31/12

00:00-17:00

Nonstop0h 00m

£307

ChicagoLondon

ORD Chicago O'Hare Intl - SEN London Southend

ORDSEN

Chicago O'Hare Intl

Sun 4/10

22:25-13:30

3 stops33h 05m

London Southend

Wed 31/12

00:00-17:00

Nonstop0h 00m

£309

St. LouisLondon

STL Lambert-St Louis - SEN London Southend

STLSEN

Lambert-St Louis

Mon 26/10

18:35-16:40

3 stops41h 05m

London Southend

Wed 31/12

00:00-17:00

Nonstop0h 00m

£318

Flights are sorted by cheapest return flights first.

Deals found on 8/9

Showing 1-10 of 28 resultsSorted by cheapest first

Best time to book a flight from Illinois to Southend

Have a flexible travel schedule? Discover the best time to fly to Southend from Illinois with our price prediction graph.

ORD-SEN

STL-SEN

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 London Southend Airport

USIL-SEN

ORD-SEN

STL-SEN

No data available for this route at this time. Please check back soon.

Related info for your journey

Can I find deals for flights from Illinois to Southend that include hotel bookings?
Yes. In addition to deals on Illinois to Southend flights, Cheapflights offers holiday packages that include both flights and hotel.
How can I find direct flights from Illinois to Southend?
After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Illinois to Southend.
Can I find deals for business class flights from Illinois to Southend?
Yes. Cheapflights offers flight deals from Illinois to Southend 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 Illinois to Southend

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

Yes, we can. To see specific flights from Illinois to Southend with no change fees, users can toggle flexible booking options after using the search form above to find flights.

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

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

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Cheap flights from Illinois to London Southend Airport from £247

This is the cheapest retur flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 19/10. Fares are subject to change and may not be available on all flights or dates of travel.

Cheap flight deals from Illinois to Southend

Cheapest flights from Illinois to SouthendExplore the most affordable flight options available from Illinois to Southend. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 13 September 2026.

Explore the most affordable flight options available from Illinois to Southend. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 13 September 2026.

Best flights from Illinois to SouthendDiscover carefully curated flight deals from Illinois to Southend that have cost, travel time, and stopovers in mind to ensure you get the best travel experience. Data last updated 13 September 2026.

Discover carefully curated flight deals from Illinois to Southend that have cost, travel time, and stopovers in mind to ensure you get the best travel experience. Data last updated 13 September 2026.

Last-minute flights from Illinois to SouthendDiscover last-minute flight deals from Illinois to Southend. Data last updated 13 September 2026 and is based on user searches.

Discover last-minute flight deals from Illinois to Southend. Data last updated 13 September 2026 and is based on user searches.

One-way flights from Illinois to SouthendSearch for one-way flight options from Illinois to Southend. Find affordable one-way fares based on user searches. Data last updated 13 September 2026.

Search for one-way flight options from Illinois to Southend. Find affordable one-way fares based on user searches. Data last updated 13 September 2026.

Find flight deals from Illinois to Southend

Round-trip from

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Cheapflights Fare Finder

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

Best time to book a flight from Illinois to Southend

Have a flexible travel schedule? Discover the best time to fly to Southend from Illinois with our price prediction graph.

Cheapflights Insights

Related info for your journey

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

How can I find direct flights from Illinois to Southend?

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

Travelling to a place near London Southend Airport?

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 Southend

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

Complete your trip

Complete your trip to Southend by adding a car hire and/or hotel booking to your travel itinerary.

Direct flights to England

Book a non-stop flight to one of these other cities located in England.

Search flights from Illinois to Southend by cabin class

Find flights from Illinois to Southend, based on your preferred cabin class, be it economy, premium economy, business, or first class.

Illinois and Southend flights

Browse other Illinois and Southend flight options. Last updated on 13 September 2026.

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Other flights to Southend

Explore flights to Southend departing from other origins. Flights are based on user searches made on Cheapflights and were last updated on 13 September 2026.

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

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Cheapest flights from Illinois to Southend
Explore the most affordable flight options available from Illinois to Southend. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 13 September 2026.

Best flights from Illinois to Southend
Discover carefully curated flight deals from Illinois to Southend that have cost, travel time, and stopovers in mind to ensure you get the best travel experience. Data last updated 13 September 2026.

Last-minute flights from Illinois to Southend
Discover last-minute flight deals from Illinois to Southend. Data last updated 13 September 2026 and is based on user searches.

One-way flights from Illinois to Southend
Search for one-way flight options from Illinois to Southend. Find affordable one-way fares based on user searches. Data last updated 13 September 2026.