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.

£345 Cheap Flights from Helena to London in 2026

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Find the cheapest flights from Helena to London

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One-way

Cheap return flights

Enter your travel dates to find the best prices.

14:34 - 09:40

HLN

LHR

12h 06m

1 stop

06:35 - 21:39

LHR

HLN

22h 04m

2 stops

£609United Airlines

Mon, 16 Nov - Wed, 18 Nov

14:34 - 09:40

HLN

LHR

12h 06m

1 stop

06:35 - 21:39

LHR

HLN

22h 04m

2 stops

£610United Airlines

Mon, 16 Nov - Wed, 18 Nov

06:15 - 07:10

HLN

LHR

17h 55m

2 stops

06:35 - 21:39

LHR

HLN

22h 04m

2 stops

£612United Airlines

Mon, 16 Nov - Wed, 18 Nov

14:34 - 09:40

HLN

LHR

12h 06m

1 stop

06:35 - 21:39

LHR

HLN

22h 04m

2 stops

£654United Airlines

Sun, 8 Nov - Tue, 17 Nov

06:15 - 06:40

HLN

LHR

17h 25m

2 stops

06:35 - 21:39

LHR

HLN

22h 04m

2 stops

£657United Airlines

Sun, 8 Nov - Tue, 17 Nov

16:41 - 12:20

HLN

LHR

12h 39m

1 stop

14:45 - 16:04

LHR

HLN

32h 19m

1 stop

£665Alaska Airlines

Mon, 16 Nov - Wed, 18 Nov

13:03 - 10:00

HLN

LHR

13h 57m

1 stop

06:20 - 22:24

LHR

HLN

22h 04m

2 stops

£679Multiple Airlines

Wed, 21 Oct - Wed, 28 Oct

13:03 - 13:15

HLN

LHR

17h 12m

2 stops

06:20 - 22:24

LHR

HLN

22h 04m

2 stops

£683Multiple Airlines

Wed, 21 Oct - Wed, 28 Oct

13:03 - 10:00

HLN

LHR

13h 57m

1 stop

10:45 - 22:24

LHR

HLN

17h 39m

1 stop

£696Multiple Airlines

Wed, 21 Oct - Wed, 28 Oct

06:15 - 09:40

HLN

LHR

20h 25m

1 stop

06:55 - 21:30

LHR

HLN

21h 35m

2 stops

£698United Airlines

Tue, 25 Aug - Tue, 1 Sep

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United Airlines flights from Helena to London

Our best United Airlines deals on Helena to London flight tickets

United Airlines

16 Nov

HLN14:34Helena

12h 06m

1 stop

LHR09:40London Heathrow

18 Nov

LHR06:35London Heathrow

22h 04m

2 stops

HLN21:39Helena

£609

United Airlines

16 Nov

HLN14:34Helena

12h 06m

1 stop

LHR09:40London Heathrow

18 Nov

LHR06:35London Heathrow

22h 04m

2 stops

HLN21:39Helena

£610

United Airlines

16 Nov

HLN06:15Helena

17h 55m

2 stops

LHR07:10London Heathrow

18 Nov

LHR06:35London Heathrow

22h 04m

2 stops

HLN21:39Helena

£612

Alaska Airlines flights from Helena to London

Our best Alaska Airlines deals on Helena to London flight tickets

Alaska Airlines

16 Nov

HLN16:41Helena

12h 39m

1 stop

LHR12:20London Heathrow

18 Nov

LHR14:45London Heathrow

32h 19m

1 stop

HLN16:04Helena

£665

Alaska Airlines

18 Aug

HLN17:09Helena

14h 56m

1 stop

LHR15:05London Heathrow

21 Aug

LHR17:00London Heathrow

30h 55m

1 stop

HLN16:55Helena

£916

Fly from

Fly to

Route

Depart

Return

Price

Cheapest return flight

HelenaLondon

HLN - LHR

HLNLHR

Helena

Mon 16/11

14:34-09:40

1 stop12h 06m

London Heathrow

Wed 18/11

06:35-21:39

2 stops22h 04m

£609

HelenaLondon

HLN - LHR

HLNLHR

Helena

Mon 16/11

14:34-09:40

1 stop12h 06m

London Heathrow

Wed 18/11

06:35-21:39

2 stops22h 04m

£610

HelenaLondon

HLN - LHR

HLNLHR

Helena

Mon 16/11

06:15-07:10

2 stops17h 55m

London Heathrow

Wed 18/11

06:35-21:39

2 stops22h 04m

£612

HelenaLondon

HLN - LHR

HLNLHR

Helena

Sun 8/11

14:34-09:40

1 stop12h 06m

London Heathrow

Tue 17/11

06:35-21:39

2 stops22h 04m

£654

HelenaLondon

HLN - LHR

HLNLHR

Helena

Sun 8/11

06:15-06:40

2 stops17h 25m

London Heathrow

Tue 17/11

06:35-21:39

2 stops22h 04m

£657

HelenaLondon

HLN - LHR

HLNLHR

Helena

Mon 16/11

16:41-12:20

1 stop12h 39m

London Heathrow

Wed 18/11

14:45-16:04

1 stop32h 19m

£665

HelenaLondon

HLN - LHR

HLNLHR

Helena

Wed 21/10

13:03-10:00

1 stop13h 57m

London Heathrow

Wed 28/10

06:20-22:24

2 stops22h 04m

£679

HelenaLondon

HLN - LHR

HLNLHR

Helena

Wed 21/10

13:03-13:15

2 stops17h 12m

London Heathrow

Wed 28/10

06:20-22:24

2 stops22h 04m

£683

Fastest return journey

HelenaLondon

HLN - LHR

HLNLHR

Helena

Wed 21/10

13:03-10:00

1 stop13h 57m

London Heathrow

Wed 28/10

10:45-22:24

1 stop17h 39m

£696

HelenaLondon

HLN - LHR

HLNLHR

Helena

Tue 25/8

06:15-09:40

1 stop20h 25m

London Heathrow

Tue 1/9

06:55-21:30

2 stops21h 35m

£698

Flights are sorted by cheapest return flights first.

Showing 1-10 of 14 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 Austrian Airlines 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 06m
Direct flights	None

The fastest flight from Helena to London takes 12h 06m

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 06m.
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

Maidstone

Ipswich

Ilford

Folkestone

Canterbury

Guildford

Hayes

Hastings

Chichester

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 £345

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 9/9. 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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Big names, great deals

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United Airlines flights from Helena to London

Our best United Airlines deals on Helena to London flight tickets

Alaska Airlines flights from Helena to London

Our best Alaska 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

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

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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