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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 22/9. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
1 adult
0 bags
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Find the cheapest flights from Helena to London

Cheap return flights

Enter your travel dates to find the best prices.
United Airlines Logo
06:15 - 12:20
HLN
-
LHR
23h 05m
1 stop
United Airlines Logo
07:30 - 20:59
LHR
-
HLN
20h 29m
2 stops
£713United Airlines
Sun, 13 Sep - Thu, 8 Oct
United Airlines Logo
06:15 - 07:40
HLN
-
LHR
18h 25m
2 stops
United Airlines Logo
07:30 - 20:59
LHR
-
HLN
20h 29m
2 stops
£716United Airlines
Tue, 15 Sep - Thu, 8 Oct
United Airlines Logo
14:29 - 11:35
HLN
-
LHR
38h 06m
2 stops
United Airlines Logo
07:30 - 20:59
LHR
-
HLN
20h 29m
2 stops
£724United Airlines
Sat, 12 Sep - Thu, 8 Oct
United Airlines Logo
14:29 - 06:55
HLN
-
LHR
33h 26m
2 stops
United Airlines Logo
07:30 - 20:59
LHR
-
HLN
20h 29m
2 stops
£725United Airlines
Mon, 14 Sep - Thu, 8 Oct
United Airlines Logo
06:15 - 12:20
HLN
-
LHR
23h 05m
1 stop
United Airlines Logo
11:25 - 20:59
LHR
-
HLN
16h 34m
1 stop
£725United Airlines
Sun, 13 Sep - Tue, 6 Oct
Multiple Airlines Logo
16:08 - 06:55
HLN
-
LHR
31h 47m
2 stops
Multiple Airlines Logo
16:25 - 15:31
LHR
-
HLN
30h 06m
2 stops
£726Multiple Airlines
Mon, 14 Sep - Mon, 5 Oct
Delta Logo
12:50 - 12:10
HLN
-
LHR
16h 20m
2 stops
Delta Logo
15:50 - 12:24
LHR
-
HLN
27h 34m
2 stops
£729Delta
Sun, 13 Sep - Thu, 8 Oct
Multiple Airlines Logo
17:09 - 06:50
HLN
-
LHR
30h 41m
2 stops
Multiple Airlines Logo
09:50 - 16:34
LHR
-
HLN
13h 44m
1 stop
£743Multiple Airlines
Sat, 15 Aug - Sat, 29 Aug
KLM Logo
13:03 - 11:40
HLN
-
LCY
15h 37m
2 stops
KLM Logo
10:00 - 22:33
LCY
-
HLN
19h 33m
2 stops
£2,048KLM
Fri, 8 May - Wed, 27 May
Delta Logo
13:04 - 16:40
HLN
-
LCY
20h 36m
2 stops
Delta Logo
08:25 - 22:33
LCY
-
HLN
21h 08m
2 stops
£6,383Delta
Wed, 6 May - Wed, 27 May

United Airlines flights from Helena to London

Our best United Airlines deals on Helena to London flight tickets
United Airlines
13 Sept
HLN06:15Helena
23h 05m
1 stop
LHR12:20London Heathrow
8 Oct
LHR07:30London Heathrow
20h 29m
2 stops
HLN20:59Helena
£713
United Airlines
15 Sept
HLN06:15Helena
18h 25m
2 stops
LHR07:40London Heathrow
8 Oct
LHR07:30London Heathrow
20h 29m
2 stops
HLN20:59Helena
£716
United Airlines
12 Sept
HLN14:29Helena
38h 06m
2 stops
LHR11:35London Heathrow
8 Oct
LHR07:30London Heathrow
20h 29m
2 stops
HLN20:59Helena
£724

Delta flights from Helena to London

Our best Delta deals on Helena to London flight tickets
Delta
17 Sept
HLN12:50Helena
19h 10m
2 stops
LHR15:00London Heathrow
6 Oct
LHR10:55London Heathrow
18h 46m
1 stop
HLN22:41Helena
£767
Delta
17 Sept
HLN12:50Helena
19h 10m
2 stops
LHR15:00London Heathrow
4 Oct
LHR18:15London Heathrow
25h 08m
2 stops
HLN12:23Helena
£804
Delta
4 May
HLN13:04Helena
17h 01m
2 stops
LHR13:05London Heathrow
27 May
LHR16:20London Heathrow
27h 03m
2 stops
HLN12:23Helena
£821

momondo Fare Finder

 
Customise your flight search to find flights from Helena to London that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, momondo users made 279,928 searches. Data last updated 2 April 2026.
Use the filters below to find and compare flights from Helena to London that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest return flight

HelenaLondon

HLN - LHR

HLNLHR

Helena

Sun 13/9

06:15-12:20

1 stop23h 05m

London Heathrow

Thu 8/10

07:30-20:59

2 stops20h 29m

£713

HelenaLondon

HLN - LHR

HLNLHR

Helena

Tue 15/9

06:15-07:40

2 stops18h 25m

London Heathrow

Thu 8/10

07:30-20:59

2 stops20h 29m

£716

HelenaLondon

HLN - LHR

HLNLHR

Helena

Sat 12/9

14:29-11:35

2 stops38h 06m

London Heathrow

Thu 8/10

07:30-20:59

2 stops20h 29m

£724

HelenaLondon

HLN - LHR

HLNLHR

Helena

Mon 14/9

14:29-06:55

2 stops33h 26m

London Heathrow

Thu 8/10

07:30-20:59

2 stops20h 29m

£725

HelenaLondon

HLN - LHR

HLNLHR

Helena

Sun 13/9

06:15-12:20

1 stop23h 05m

London Heathrow

Tue 6/10

11:25-20:59

1 stop16h 34m

£725

HelenaLondon

HLN - LHR

HLNLHR

Helena

Mon 14/9

16:08-06:55

2 stops31h 47m

London Heathrow

Mon 5/10

16:25-15:31

2 stops30h 06m

£726

HelenaLondon

HLN - LHR

HLNLHR

Helena

Sun 13/9

12:50-12:10

2 stops16h 20m

London Heathrow

Thu 8/10

15:50-12:24

2 stops27h 34m

£729

HelenaLondon

HLN - LHR

HLNLHR

Helena

Sat 15/8

17:09-06:50

2 stops30h 41m

London Heathrow

Sat 29/8

09:50-16:34

1 stop13h 44m

£743
Fastest return journey

HelenaLondon

HLN - LCY

HLNLCY

Helena

Fri 8/5

13:03-11:40

2 stops15h 37m

London City

Wed 27/5

10:00-22:33

2 stops19h 33m

£2,048

HelenaLondon

HLN - LCY

HLNLCY

Helena

Wed 6/5

13:04-16:40

2 stops20h 36m

London City

Wed 27/5

08:25-22:33

2 stops21h 08m

£6,383

Flights are sorted by cheapest return flights first.

Showing 1-10 of 20 resultsSorted by cheapest first
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See travel insights to London from

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?

KLM, Delta, and Alaska 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

18h 00m

Direct flights

None
The fastest flight from Helena to London takes 18h 00m
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 18h 00m.

  • 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.

Travelling to a place near London?

Book flights to London if you plan to visit one of these locations
Eastbourne
Milton Keynes
Luton
Gatwick
Slough
Maidstone
Southend-on-Sea
Wembley
Ipswich
Canterbury
Ilford
Guildford
Hayes
Chelmsford
Dover
Folkestone
Ramsgate
Bedford
Chichester
Worthing

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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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
London City Airport
London Gatwick Airport
London Heathrow Airport
London Luton Airport
London Southend Airport
London Stansted Airport