Question 1

What is the cheapest month to book a flight from London Southend Airport to Illinois?

Accepted Answer

Currently, January is the cheapest month in which you can book a flight from London Southend Airport to Illinois (average of £595). Flying from London Southend Airport to Illinois in July is currently the most expensive (average of £843). 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.

Question 2

E

Accepted Answer

In terms of precipitation, rainfall in Illinois ranges from 43.0 - 125.0 inches per month. August is typically the wettest month, when rainfall can reach 125.0 mm. January is typically the driest time to visit Illinois when rainfall is around 43.0 mm.

Question 3

E

Accepted Answer

If weather is an important factor for your trip to Illinois, 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 23.0 C. Travellers hoping to avoid the cold should look outside of January, when temperatures are typically at their lowest (around -5.0 C).

Question 4

How far in advance should I book a flight from London Southend Airport to Illinois?

Accepted Answer

Users have found that booking a flight from London Southend Airport to Illinois at least 56 days early can save you up to 35% on average compared to booking a flight this week. If booking 56 days before your flight isn’t an option for you, users have found flights from London Southend Airport to Illinois for as little as £499 when booking for a departure date within the next two weeks. You can also check prices now. Some users have found airline tickets as low as £667 for flights departing within the next 3 days.

Question 5

What is the cheapest month to fly from London Southend Airport to Illinois?

Accepted Answer

February is one of the best times of the year to fly to Illinois from London Southend Airport. Prices for February average £515 per person but you can even find prices for as low as £318. The most expensive prices can be found in the month of July. Opting for a February flight can save you 24% on your journey compared to booking in July

Question 6

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

Accepted Answer

When flying from London Southend Airport to Illinois, the time of day you decide to fly out makes little to no difference towards the overall price you’ll pay on tickets.

Question 7

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

Accepted Answer

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

Question 8

How can I find direct flights from Southend to Illinois?

Accepted Answer

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

Question 9

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

Accepted Answer

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.

Question 10

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

Accepted Answer

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.

Question 11

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

Accepted Answer

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.

Question 12

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

Accepted Answer

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.

Question 13

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

Accepted Answer

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.

Popular in	July
Cheapest in	February
Average price	£622

Cheap flights from London Southend Airport to Illinois from £406

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 1/12. Fares are subject to change and may not be available on all flights or dates of travel.

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 29 August 2025.

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One-way flights from Southend to IllinoisSearch for one-way flight options from Southend to Illinois. Find affordable one-way fares based on user searches. Data last updated 29 August 2025.

Search for one-way flight options from Southend to Illinois. Find affordable one-way fares based on user searches. Data last updated 29 August 2025.

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Best time to book a flight from Southend to Illinois

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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?

How can I find direct flights from Southend to Illinois?

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

What is the cheapest month to book a flight from London Southend Airport to Illinois?

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

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

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

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

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One-way flights from Southend to Illinois
Search for one-way flight options from Southend to Illinois. Find affordable one-way fares based on user searches. Data last updated 29 August 2025.