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.

$311 Cheap Flights from Illinois to London Southend Airport in 2026

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Cheap round-trip flights

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7:25 pm - 4:40 pm

ORD

SEN

15h 15m

2 stops

7:50 pm - 6:15 pm

SEN

ORD

28h 25m

2 stops

$883Multiple Airlines

Wed, Jul 29 - Sun, Aug 9

8:15 pm - 4:40 pm

ORD

SEN

15h 25m

2 stops

7:35 pm - 4:45 pm

SEN

ORD

27h 10m

2 stops

$990Multiple Airlines

Tue, Oct 27 - Sun, Nov 8

6:30 pm - 9:50 pm

ORD

SEN

21h 20m

2 stops

7:00 pm - 5:20 pm

SEN

ORD

28h 20m

3 stops

$1,028Multiple Airlines

Tue, Dec 22 - Sun, Jan 3

7:25 pm - 4:40 pm

ORD

SEN

15h 15m

2 stops

12:15 pm - 9:25 pm

SEN

ORD

15h 10m

2 stops

$1,040Multiple Airlines

Wed, Aug 5 - Wed, Aug 19

5:10 pm - 6:50 pm

ORD

SEN

19h 40m

2 stops

7:35 am - 2:15 pm

SEN

ORD

12h 40m

1 stop

$1,395Multiple Airlines

Sun, Jul 26 - Sun, Aug 2

3:30 pm - 10:20 pm

STL

SEN

24h 50m

2 stops

3:40 pm - 6:41 pm

SEN

STL

33h 01m

3 stops

$2,316Multiple Airlines

Tue, Sep 29 - Wed, Oct 7

10:25 pm - 7:20 pm

ORD

SEN

38h 55m

2 stops

4:30 pm - 2:15 pm

SEN

ORD

27h 45m

1 stop

$2,433Multiple Airlines

Fri, Aug 14 - Fri, Aug 21

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Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

ChicagoLondon

ORD - SEN

ORDSEN

Chicago O'Hare Intl

Wed 7/29

7:25 pm-4:40 pm

2 stops15h 15m

London Southend

Sun 8/9

7:50 pm-6:15 pm

2 stops28h 25m

$883

ChicagoLondon

ORD - SEN

ORDSEN

Chicago O'Hare Intl

Tue 10/27

8:15 pm-4:40 pm

2 stops15h 25m

London Southend

Sun 11/8

7:35 pm-4:45 pm

2 stops27h 10m

$990

ChicagoLondon

ORD - SEN

ORDSEN

Chicago O'Hare Intl

Tue 12/22

6:30 pm-9:50 pm

2 stops21h 20m

London Southend

Sun 1/3

7:00 pm-5:20 pm

3 stops28h 20m

$1,028

Quickest round-trip

ChicagoLondon

ORD - SEN

ORDSEN

Chicago O'Hare Intl

Wed 8/5

7:25 pm-4:40 pm

2 stops15h 15m

London Southend

Wed 8/19

12:15 pm-9:25 pm

2 stops15h 10m

$1,040

ChicagoLondon

ORD - SEN

ORDSEN

Chicago O'Hare Intl

Sun 7/26

5:10 pm-6:50 pm

2 stops19h 40m

London Southend

Sun 8/2

7:35 am-2:15 pm

1 stop12h 40m

$1,395

St. LouisLondon

STL - SEN

STLSEN

Lambert-St Louis

Tue 9/29

3:30 pm-10:20 pm

2 stops24h 50m

London Southend

Wed 10/7

3:40 pm-6:41 pm

3 stops33h 01m

$2,316

ChicagoLondon

ORD - SEN

ORDSEN

Chicago O'Hare Intl

Fri 8/14

10:25 pm-7:20 pm

2 stops38h 55m

London Southend

Fri 8/21

4:30 pm-2:15 pm

1 stop27h 45m

$2,433

Cheapest one-way

ChicagoLondon

ORD - SEN

ORDSEN

Chicago O'Hare Intl

Sun 7/26

7:25 pm-11:20 am

3 stops33h 55m

$311

ChicagoLondon

ORD - SEN

ORDSEN

Chicago O'Hare Intl

Wed 9/2

10:25 pm-7:35 pm

3 stops39h 10m

$330

Quickest one-way

ChicagoLondon

ORD - SEN

ORDSEN

Chicago O'Hare Intl

Tue 9/1

7:25 pm-7:40 pm

3 stops18h 15m

$341

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 17 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 12m on average. Another popular route from Illinois to London Southend Airport is flying from Moline to London Heathrow Airport, which will take roughly 11h 30m. 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 55m
Direct flights	None

The fastest flight from Illinois to London Southend Airport takes 14h 55m

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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Frequently asked questions about flying from Illinois to London Southend Airport

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.

Hounslow

Gatwick

Milton Keynes

Luton

Hayes

Dover

Crawley

Croydon

Wembley

Stansted

Harrow

Slough

Watford

Ilford

Cobham

Brentwood

Folkestone

Guildford

Romford

Uxbridge

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.

An easier way to manage your London Southend Airport trip

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Cheap flights from Illinois to London from $311

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Illinois to London departing on 7/26. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.

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Why use momondo?

An easier way to manage your London Southend Airport trip

We make it super easy to schedule, organize and travel with friends or family. Trips is free — and available to use no matter where you book.

Get notified when prices go down

Daily price changes in your inbox - only with Price Alerts.

Find better results for your trip to London

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