When did momondo last update prices for flights from Helena Airport to London?

Prices for flights from Helena Airport to London are refreshed on a daily basis.

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

The minimum age a child must be to fly alone is five but airlines that offer an unaccompanied minor (UNMR) service will have their own age restrictions, including rules around flight length, timings, and stopovers. We always recommend checking with the individual airline you are booking with to travel from Helena Airport to London.

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

The required travel and health documents for your London 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. We recommend that you seek guidance from your airline or a reliable third party such as IATA.

£251 Cheap Flights from Helena to London in 2026

Find the cheapest flights from Helena to London

Return

One-way

Cheap return flights

Enter your travel dates to find the best prices.

14:23 - 09:40

HLN

LHR

12h 17m

1 stop

06:35 - 21:31

LHR

HLN

21h 56m

2 stops

£657United Airlines

Mon, 9 Nov - Fri, 13 Nov

14:34 - 09:40

HLN

LHR

12h 06m

1 stop

06:35 - 21:39

LHR

HLN

22h 04m

2 stops

£658United Airlines

Mon, 9 Nov - Fri, 13 Nov

14:34 - 09:40

HLN

LHR

12h 06m

1 stop

06:35 - 21:39

LHR

HLN

22h 04m

2 stops

£659United Airlines

Mon, 9 Nov - Fri, 13 Nov

06:15 - 07:10

HLN

LHR

17h 55m

2 stops

06:35 - 21:39

LHR

HLN

22h 04m

2 stops

£660United Airlines

Mon, 9 Nov - Fri, 13 Nov

06:15 - 07:10

HLN

LHR

17h 55m

2 stops

06:35 - 21:39

LHR

HLN

22h 04m

2 stops

£661United Airlines

Mon, 9 Nov - Fri, 13 Nov

07:00 - 09:10

HLN

LHR

19h 10m

2 stops

06:35 - 20:59

LHR

HLN

21h 24m

2 stops

£662United Airlines

Wed, 2 Dec - Tue, 8 Dec

16:41 - 12:20

HLN

LHR

12h 39m

1 stop

14:45 - 16:04

LHR

HLN

32h 19m

1 stop

£669Alaska Airlines

Mon, 9 Nov - Fri, 13 Nov

16:41 - 12:20

HLN

LHR

12h 39m

1 stop

14:45 - 16:04

LHR

HLN

32h 19m

1 stop

£670Alaska Airlines

Mon, 9 Nov - Fri, 13 Nov

16:41 - 12:20

HLN

LHR

12h 39m

1 stop

14:45 - 16:04

LHR

HLN

32h 19m

1 stop

£671Alaska Airlines

Mon, 9 Nov - Fri, 13 Nov

13:03 - 16:40

HLN

LCY

20h 37m

2 stops

10:00 - 22:24

LCY

HLN

19h 24m

2 stops

£725Delta

Wed, 7 Oct - Wed, 14 Oct

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Alaska Airlines flights from Helena to London

Our best Alaska Airlines deals on Helena to London flight tickets

Alaska Airlines

9 Nov

HLN16:41Helena

12h 39m

1 stop

LHR12:20London Heathrow

13 Nov

LHR14:45London Heathrow

32h 19m

1 stop

HLN16:04Helena

£669

Alaska Airlines

9 Nov

HLN16:41Helena

12h 39m

1 stop

LHR12:20London Heathrow

13 Nov

LHR14:45London Heathrow

32h 19m

1 stop

HLN16:04Helena

£670

Alaska Airlines

9 Nov

HLN16:41Helena

12h 39m

1 stop

LHR12:20London Heathrow

13 Nov

LHR14:45London Heathrow

32h 19m

1 stop

HLN16:04Helena

£671

United Airlines flights from Helena to London

Our best United Airlines deals on Helena to London flight tickets

United Airlines

9 Nov

HLN14:23Helena

12h 17m

1 stop

LHR09:40London Heathrow

13 Nov

LHR06:35London Heathrow

21h 56m

2 stops

HLN21:31Helena

£657

United Airlines

9 Nov

HLN14:34Helena

12h 06m

1 stop

LHR09:40London Heathrow

13 Nov

LHR06:35London Heathrow

22h 04m

2 stops

HLN21:39Helena

£658

United Airlines

9 Nov

HLN14:34Helena

12h 06m

1 stop

LHR09:40London Heathrow

13 Nov

LHR06:35London Heathrow

22h 04m

2 stops

HLN21:39Helena

£659

Fly from

Fly to

Route

Depart

Return

Price

Cheapest return flight

HelenaLondon

HLN - LHR

HLNLHR

Helena

Mon 9/11

14:23-09:40

1 stop12h 17m

London Heathrow

Fri 13/11

06:35-21:31

2 stops21h 56m

£657

Fastest return journey

HelenaLondon

HLN - LHR

HLNLHR

Helena

Mon 9/11

14:34-09:40

1 stop12h 06m

London Heathrow

Fri 13/11

06:35-21:39

2 stops22h 04m

£658

HelenaLondon

HLN - LHR

HLNLHR

Helena

Mon 9/11

14:34-09:40

1 stop12h 06m

London Heathrow

Fri 13/11

06:35-21:39

2 stops22h 04m

£659

HelenaLondon

HLN - LHR

HLNLHR

Helena

Mon 9/11

06:15-07:10

2 stops17h 55m

London Heathrow

Fri 13/11

06:35-21:39

2 stops22h 04m

£660

HelenaLondon

HLN - LHR

HLNLHR

Helena

Mon 9/11

06:15-07:10

2 stops17h 55m

London Heathrow

Fri 13/11

06:35-21:39

2 stops22h 04m

£661

HelenaLondon

HLN - LHR

HLNLHR

Helena

Wed 2/12

07:00-09:10

2 stops19h 10m

London Heathrow

Tue 8/12

06:35-20:59

2 stops21h 24m

£662

HelenaLondon

HLN - LHR

HLNLHR

Helena

Mon 9/11

16:41-12:20

1 stop12h 39m

London Heathrow

Fri 13/11

14:45-16:04

1 stop32h 19m

£669

HelenaLondon

HLN - LHR

HLNLHR

Helena

Mon 9/11

16:41-12:20

1 stop12h 39m

London Heathrow

Fri 13/11

14:45-16:04

1 stop32h 19m

£670

HelenaLondon

HLN - LHR

HLNLHR

Helena

Mon 9/11

16:41-12:20

1 stop12h 39m

London Heathrow

Fri 13/11

14:45-16:04

1 stop32h 19m

£671

HelenaLondon

HLN - LCY

HLNLCY

Helena

Wed 7/10

13:03-16:40

2 stops20h 37m

London City

Wed 14/10

10:00-22:24

2 stops19h 24m

£725

Flights are sorted by cheapest return flights first.

Showing 1-10 of 13 resultsSorted by cheapest first

How to get the cheapest flight ticket from Helena to London

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

What is the cheapest airline that flies from Helena to London?

United Airlines and Delta are the most popular carriers operating from Helena to London

When to book flights from Helena to London

Are you open to changing your travel dates? Check out the ideal times to fly from Helena to London according to our flight data. Find out which month and days have the cheapest flights.

Estimated return price

Cheap Helena to London (HLN to LON) flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from Helena to London

Fastest flight time	12h 10m
Direct flights	None

The fastest flight from Helena to London takes 12h 10m

There are no direct flights from Helena to London. There are no popular flight routes from Helena to London.

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Frequently asked questions about flying from Helena to London

How far is Helena to London by plane?
There are 4547.6 mi between Helena and London. A reasonable flight in good conditions will take 12h 10m.
When did momondo last update prices for flights from Helena Airport to London?
Prices for flights from Helena Airport to London are refreshed on a daily basis.
How old do you have to be to fly from Helena Airport to London?
The minimum age a child must be to fly alone is five but airlines that offer an unaccompanied minor (UNMR) service will have their own age restrictions, including rules around flight length, timings, and stopovers. We always recommend checking with the individual airline you are booking with to travel from Helena Airport to London.
What documentation or ID do you need to fly to London?
The required travel and health documents for your London 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. We recommend that you seek guidance from your airline or a reliable third party such as IATA.

Eastbourne

Wembley

Gatwick

Milton Keynes

Luton

Southend-on-Sea

Slough

Ipswich

Maidstone

Folkestone

Ilford

Hastings

Canterbury

Guildford

Chichester

Hayes

Bedford

Colchester

Harlow

Chelmsford

Why use momondo?

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

momondo compares prices from hundreds of airlines and agents so you can find and book the best deal on flights from Helena to London . Millions of users trust and use momondo every year so you are in good hands.

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

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

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

Once you have performed a search for Helena to London flights, momondo helps you find the right one by offering useful filters to narrow down your flight selection. Flights can be filtered by multiple factors such as airline, airport and price; but also by other criteria like aircraft type and payment method.

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

Of course. momondo tracks the price of Helena to London flights. All you need is a valid email address and we will do the rest; it is that quick and easy.

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Cheap flights from Helena to London from £251

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Helena to London departing on 21/10. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.

Find the cheapest flights from Helena to London

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Big names, great deals

Big names, great deals

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Filter for what you want

Trusted and free

Trusted and free

Price Alerts

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Alaska Airlines flights from Helena to London

Our best Alaska Airlines deals on Helena to London flight tickets

United Airlines flights from Helena to London

Our best United Airlines deals on Helena to London flight tickets

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How to get the cheapest flight ticket from Helena to London

What is the cheapest airline that flies from Helena to London?

When to book flights from Helena to London

Cheap Helena to London (HLN to LON) flight deals and tips

Fastest flight time

Direct flights

Frequently asked questions about flying from Helena to London

Travelling to a place near London?

Why use momondo?

An easier way to manage your London trip

We make it super easy to schedule, organise 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 the United Kingdom

Fly into one of these airports located in London

Airports listed have a maximum distance of 35.6 mi from London

Cabin classes currently available on flights to London

List of cabin classes available on flights landing in London. Availability may vary depending on flight origin and airline.

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