How old do you have to be to fly from Illinois to London Southend Airport?

Although the minimum age for a child to fly alone is five, airlines that offer an unaccompanied minor (UMNR) service may have their own age limits, which could be impacted by factors such as flight length, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from Illinois to London Southend Airport.

What documentation or ID do you need to fly to London Southend Airport?

The required travel and health documents for your London Southend Airport trip may vary depending on your itinerary and personal circumstances. As a general rule, you should carry multiple documents, including a national ID card or driver's license and a passport valid for six months after your intended arrival at London Southend Airport. We recommend that you seek guidance from your airline or a reliable third party such as IATA.

$375 Cheap Flights from Illinois to London Southend Airport in 2025/26

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6:30 pm - 2:50 pm

ORD

SEN

14h 20m2 stops

6:40 am - 5:20 pm

SEN

ORD

16h 40m2 stops

$775Multiple Airlines

Sun, Jan 11 - Fri, Jan 16

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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

ChicagoLondon

ORD - SEN

ORDSEN

Chicago O'Hare Intl

Sun 1/11

6:30 pm-2:50 pm

2 stops14h 20m

London Southend

Fri 1/16

6:40 am-5:20 pm

2 stops16h 40m

$775

ChicagoLondon

ORD - SEN

ORDSEN

Chicago O'Hare Intl

Sun 3/22

5:05 pm-11:00 pm

3 stops24h 55m

$392

ChicagoLondon

ORD - SEN

ORDSEN

Chicago O'Hare Intl

Fri 1/9

6:30 pm-12:15 pm

3 stops35h 45m

$400

St. LouisLondon

STL - SEN

STLSEN

Lambert-St Louis

Sun 3/8

4:50 pm-11:00 pm

3 stops25h 10m

$428

ChicagoLondon

ORD - SEN

ORDSEN

Chicago O'Hare Intl

Fri 3/13

9:15 pm-5:05 pm

2 stops38h 50m

$433

ChicagoLondon

ORD - SEN

ORDSEN

Chicago O'Hare Intl

Fri 3/13

9:15 pm-11:05 am

2 stops32h 50m

$443

ChicagoLondon

ORD - SEN

ORDSEN

Chicago O'Hare Intl

Fri 1/9

8:15 pm-12:15 pm

2 stops34h 00m

$475

ChicagoLondon

ORD - SEN

ORDSEN

Chicago O'Hare Intl

Wed 12/31

9:50 pm-10:10 pm

3 stops42h 20m

$482

ChicagoLondon

ORD - SEN

ORDSEN

Chicago O'Hare Intl

Tue 1/13

6:50 pm-12:00 pm

2 stops35h 10m

$496

ChicagoLondon

ORD - SEN

ORDSEN

Chicago O'Hare Intl

Wed 12/31

6:30 pm-11:40 am

2 stops35h 10m

$500

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 11 resultsSorted by cheapest first

How to get the cheapest flight ticket from Illinois to London Southend Airport

Look no further. We've gone through all the searches for this route on momondo so you have the important information and insights to find the cheapest flight ticket for your trip

How long does it take to fly to London Southend Airport?

Flight times from Illinois to London Southend Airport vary, but if you’re flying out of Chicago and flying into London Heathrow Airport (one of the most popular routes), then the duration is 9h 28m on average. Another popular route from Illinois to London Southend Airport is flying from Peoria to London Heathrow Airport, which will take roughly 10h 05m. Keep in mind that layovers or delays could extend your travel time.

Cheap Illinois to London Southend Airport flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from Illinois to London Southend Airport

Fastest flight time	14h 20m
Direct flights	None

The fastest flight from Illinois to London Southend Airport takes 14h 20m

There are no direct flights from Illinois to London Southend Airport. There are no popular flight routes from Illinois to London Southend Airport.

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When did momondo last update prices for flights from Illinois to London Southend Airport?
Prices for flights from Illinois to London Southend Airport refresh daily.
How old do you have to be to fly from Illinois to London Southend Airport?
Although the minimum age for a child to fly alone is five, airlines that offer an unaccompanied minor (UMNR) service may have their own age limits, which could be impacted by factors such as flight length, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from Illinois to London Southend Airport.
What documentation or ID do you need to fly to London Southend Airport?
The required travel and health documents for your London Southend Airport trip may vary depending on your itinerary and personal circumstances. As a general rule, you should carry multiple documents, including a national ID card or driver's license and a passport valid for six months after your intended arrival at London Southend Airport. We recommend that you seek guidance from your airline or a reliable third party such as IATA.

Gatwick

Hounslow

Milton Keynes

Dover

Luton

Slough

Guildford

Hayes

Dartford

Crawley

Brentwood

Watford

Wembley

Cobham

Folkestone

Romford

Richmond

Uxbridge

Chelmsford

Stansted

Why use momondo?

Why should I use momondo to find a flight deal from Illinois to London?

It is quick and easy to find Illinois to London flights on momondo. We search and return numerous flight options from various airlines and agents. You can then use our filters to narrow your search until you have found the most convenient flight to London that suits you.

Can I find flights from Illinois to London with flexible booking policies on momondo?

Yes. momondo allows you to filter the results for Illinois to London flights to just show those with flexible booking policies.

How can momondo help me find flights from Illinois to London?

Once all potential Illinois to London flight options are in front of you, momondo lets you sort and filter flights based on preferences such as airline, price and flight times amongst many other options.

I’m not ready to book a flight from Illinois to London right now. Can momondo alert me if prices change?

Yes momondo offers price alerts on flights to London from Illinois. After performing a search on this page you should be able to see the price alert set up feature. Simply provide a valid email address and momondo will instantly alert you when prices change.