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.

£350 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.

17:00 - 12:20HLN Helena-LHR London Heathrow

12h 20m1 stop Seattle/Tacoma Intl

14:45 - 16:23LHR London Heathrow-HLN Helena

32h 38m1 stop Seattle/Tacoma Intl

£641Alaska Airlines

Wed, 6 Jan - Wed, 13 Jan

12:50 - 10:00HLN Helena-LHR London Heathrow

14h 10m1 stop Salt Lake City

06:20 - 22:41LHR London Heathrow-HLN Helena

23h 21m2 stops Paris Charles de Gaulle Salt Lake City

£661Delta

Tue, 9 Feb - Wed, 24 Feb

17:00 - 12:20HLN Helena-LHR London Heathrow

12h 20m1 stop Seattle/Tacoma Intl

14:45 - 15:31LHR London Heathrow-HLN Helena

31h 46m1 stop Seattle/Tacoma Intl

£662Alaska Airlines

Sun, 7 Feb - Wed, 24 Feb

14:30 - 09:40HLN Helena-LHR London Heathrow

12h 10m1 stop Denver Intl

07:30 - 20:59LHR London Heathrow-HLN Helena

20h 29m2 stops Frankfurt am Main Denver Intl

£664United Airlines

Sun, 7 Feb - Wed, 24 Feb

07:00 - 07:10HLN Helena-LHR London Heathrow

17h 10m2 stops Denver Intl Montreal Pierre Elliott Trudeau Intl

07:30 - 20:59LHR London Heathrow-HLN Helena

20h 29m2 stops Frankfurt am Main Denver Intl

£667United Airlines

Wed, 10 Feb - Tue, 23 Feb

07:00 - 07:40HLN Helena-LHR London Heathrow

17h 40m2 stops Denver Intl Houston George Bush Intcntl

07:30 - 20:59LHR London Heathrow-HLN Helena

20h 29m2 stops Frankfurt am Main Denver Intl

£668United Airlines

Tue, 9 Feb - Fri, 19 Feb

07:00 - 16:50HLN Helena-LHR London Heathrow

26h 50m2 stops Denver Intl Frankfurt am Main

07:30 - 20:59LHR London Heathrow-HLN Helena

20h 29m2 stops Frankfurt am Main Denver Intl

£679United Airlines

Mon, 8 Feb - Tue, 23 Feb

05:45 - 10:30HLN Helena-LHR London Heathrow

21h 45m2 stops Salt Lake City New York John F Kennedy Intl

10:50 - 22:41LHR London Heathrow-HLN Helena

18h 51m2 stops Atlanta Hartsfield-Jackson Salt Lake City

£681Delta

Sun, 7 Feb - Thu, 18 Feb

05:45 - 10:00HLN Helena-LHR London Heathrow

21h 15m1 stop Salt Lake City

06:20 - 22:41LHR London Heathrow-HLN Helena

23h 21m2 stops Paris Charles de Gaulle Salt Lake City

£698Multiple Airlines

Tue, 9 Feb - Sat, 20 Feb

16:08 - 12:20HLN Helena-LHR London Heathrow

13h 12m1 stop Seattle/Tacoma Intl

14:45 - 15:31LHR London Heathrow-HLN Helena

31h 46m1 stop Seattle/Tacoma Intl

£699Alaska Airlines

Thu, 11 Feb - Tue, 23 Feb

Save money when you book flights with momondo

Big names, great deals

Search 100s of travel sites to compare prices.

Filter for what you want

Free Wi-Fi? Stopover? Instantly customise your results.

Trusted and free

We’re completely free to use - no hidden charges or fees.

Price Alerts

Not ready to book? to track prices.

Search flight deals

Delta flights from Helena to London

Our best Delta deals on Helena to London flight tickets

Delta

9 Feb

HLN12:50Helena

14h 10m

1 stop

LHR10:00London Heathrow

24 Feb

LHR06:20London Heathrow

23h 21m

2 stops

HLN22:41Helena

£661

Delta

7 Feb

HLN05:45Helena

21h 45m

2 stops

LHR10:30London Heathrow

18 Feb

LHR10:50London Heathrow

18h 51m

2 stops

HLN22:41Helena

£681

Delta

9 Feb

HLN12:50Helena

17h 55m

2 stops

LHR13:45London Heathrow

20 Feb

LHR06:20London Heathrow

23h 21m

2 stops

HLN22:41Helena

£702

United Airlines flights from Helena to London

Our best United Airlines deals on Helena to London flight tickets

United Airlines

7 Feb

HLN14:30Helena

12h 10m

1 stop

LHR09:40London Heathrow

24 Feb

LHR07:30London Heathrow

20h 29m

2 stops

HLN20:59Helena

£664

United Airlines

10 Feb

HLN07:00Helena

17h 10m

2 stops

LHR07:10London Heathrow

23 Feb

LHR07:30London Heathrow

20h 29m

2 stops

HLN20:59Helena

£667

United Airlines

9 Feb

HLN07:00Helena

16h 20m

2 stops

LHR06:20London Heathrow

24 Feb

LHR07:30London Heathrow

20h 29m

2 stops

HLN20:59Helena

£668

Fly from

Fly to

Route

Depart

Return

Price

Cheapest return flight

HelenaLondon

HLN Helena - LHR London Heathrow

HLNLHR

Helena

Wed 6/1

17:00-12:20

1 stop12h 20m

London Heathrow

Wed 13/1

14:45-16:23

1 stop32h 38m

£641

HelenaLondon

HLN Helena - LHR London Heathrow

HLNLHR

Helena

Tue 9/2

12:50-10:00

1 stop14h 10m

London Heathrow

Wed 24/2

06:20-22:41

2 stops23h 21m

£661

HelenaLondon

HLN Helena - LHR London Heathrow

HLNLHR

Helena

Sun 7/2

17:00-12:20

1 stop12h 20m

London Heathrow

Wed 24/2

14:45-15:31

1 stop31h 46m

£662

Fastest return journey

HelenaLondon

HLN Helena - LHR London Heathrow

HLNLHR

Helena

Sun 7/2

14:30-09:40

1 stop12h 10m

London Heathrow

Wed 24/2

07:30-20:59

2 stops20h 29m

£664

HelenaLondon

HLN Helena - LHR London Heathrow

HLNLHR

Helena

Wed 10/2

07:00-07:10

2 stops17h 10m

London Heathrow

Tue 23/2

07:30-20:59

2 stops20h 29m

£667

HelenaLondon

HLN Helena - LHR London Heathrow

HLNLHR

Helena

Tue 9/2

07:00-07:40

2 stops17h 40m

London Heathrow

Fri 19/2

07:30-20:59

2 stops20h 29m

£668

HelenaLondon

HLN Helena - LHR London Heathrow

HLNLHR

Helena

Mon 8/2

07:00-16:50

2 stops26h 50m

London Heathrow

Tue 23/2

07:30-20:59

2 stops20h 29m

£679

HelenaLondon

HLN Helena - LHR London Heathrow

HLNLHR

Helena

Sun 7/2

05:45-10:30

2 stops21h 45m

London Heathrow

Thu 18/2

10:50-22:41

2 stops18h 51m

£681

HelenaLondon

HLN Helena - LHR London Heathrow

HLNLHR

Helena

Tue 9/2

05:45-10:00

1 stop21h 15m

London Heathrow

Sat 20/2

06:20-22:41

2 stops23h 21m

£698

HelenaLondon

HLN Helena - LHR London Heathrow

HLNLHR

Helena

Thu 11/2

16:08-12:20

1 stop13h 12m

London Heathrow

Tue 23/2

14:45-15:31

1 stop31h 46m

£699

Flights are sorted by cheapest return flights first.

Showing 1-10 of 15 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?

Alaska Airlines is the most popular carrier 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

Best price found	£350
Fastest flight time	12h 10m
Direct flights	None

The best one-way flight to London from Helena in the past 72 hours is £350. The best return flight deal from Helena to London found on momondo in the last 72 hours is £641.

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.

Search flight deals

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

Southend-on-Sea

Luton

Slough

Ipswich

Maidstone

Folkestone

Hastings

Ilford

Canterbury

Chichester

Hayes

Bedford

Guildford

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.

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.

Start using Trips

Find my bookings

Get notified when prices go down

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

1 adult

Fri 2/10

Fri 9/10

Email me momondo's favourite deals

By creating a price alert you accept our terms of use and privacy policy.

Find better results for your trip to the United Kingdom

Nearby airports

Cabin classes

Other United Kingdom destinations

Complete your trip

Feeling lucky

Fly into one of these airports located in London

London City Airport

London Gatwick Airport

London Heathrow Airport

London Luton Airport

London Southend Airport

London Stansted Airport

Cheap flights from Helena to London from £350

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 17/11. 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

Cheap return flights

Cheap one-way flights

Big names, great deals

Big names, great deals

Filter for what you want

Filter for what you want

Trusted and free

Trusted and free

Price Alerts

Price Alerts

Delta flights from Helena to London

Our best Delta 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

momondo Fare Finder

Use the filters below to find and compare flights from Helena to London that are best for you.

See travel insights to London from

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

Best price found

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.

Popular Cities in the United Kingdom

Popular flights according to clicks in the last 7 days on momondo

Complete your trip to London

Explore popular destinations other users love

According to popular flight searches on momondo this year