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Cheap flights from Helena to London from $384

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 9/18. 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 round-trip flights

Enter your travel dates to find the best prices.
United Airlines Logo
2:30 pm - 9:40 am
HLN
-
LHR
12h 10m
1 stop
United Airlines Logo
5:40 pm - 4:05 pm
LHR
-
HLN
29h 25m
2 stops
$888United Airlines
Tue, Sep 29 - Tue, Oct 6
United Airlines Logo
5:20 pm - 12:25 pm
HLN
-
LHR
12h 05m
1 stop
United Airlines Logo
11:25 am - 8:59 pm
LHR
-
HLN
16h 34m
1 stop
$903United Airlines
Tue, Sep 29 - Tue, Oct 6
Multiple Airlines Logo
5:18 pm - 1:45 pm
HLN
-
LHR
13h 27m
1 stop
Multiple Airlines Logo
4:25 pm - 3:31 pm
LHR
-
HLN
30h 06m
2 stops
$907Multiple Airlines
Tue, Sep 29 - Tue, Oct 6
Multiple Airlines Logo
5:18 pm - 6:55 am
HLN
-
LHR
30h 37m
2 stops
Multiple Airlines Logo
4:25 pm - 3:31 pm
LHR
-
HLN
30h 06m
2 stops
$908Multiple Airlines
Tue, Sep 29 - Tue, Oct 6
United Airlines Logo
2:30 pm - 4:40 pm
HLN
-
LHR
43h 10m
2 stops
United Airlines Logo
2:05 pm - 4:05 pm
LHR
-
HLN
33h 00m
2 stops
$913United Airlines
Fri, Sep 25 - Mon, Sep 28
Multiple Airlines Logo
12:50 pm - 10:00 am
HLN
-
LHR
14h 10m
1 stop
Multiple Airlines Logo
6:15 am - 10:41 pm
LHR
-
HLN
23h 26m
2 stops
$931Multiple Airlines
Mon, Sep 28 - Tue, Oct 6
United Airlines Logo
2:30 pm - 9:40 am
HLN
-
LHR
12h 10m
1 stop
United Airlines Logo
7:30 am - 8:59 pm
LHR
-
HLN
20h 29m
2 stops
$935United Airlines
Sun, Sep 27 - Thu, Oct 8
Delta Logo
5:45 am - 12:10 pm
HLN
-
LHR
23h 25m
2 stops
Delta Logo
6:15 am - 10:41 pm
LHR
-
HLN
23h 26m
2 stops
$936Delta
Sun, Sep 27 - Tue, Oct 6
United Airlines Logo
2:30 pm - 12:35 pm
HLN
-
LHR
15h 05m
1 stop
United Airlines Logo
5:40 pm - 4:05 pm
LHR
-
HLN
29h 25m
2 stops
$937United Airlines
Sun, Sep 27 - Tue, Oct 6
United Airlines Logo
2:30 pm - 4:40 pm
HLN
-
LHR
43h 10m
2 stops
United Airlines Logo
2:50 pm - 4:05 pm
LHR
-
HLN
32h 15m
1 stop
$939United Airlines
Fri, Sep 25 - Mon, Sep 28

United Airlines flights from Helena to London Heathrow Airport

Our best United Airlines deals on Helena to London Heathrow Airport flight tickets
United Airlines
Sep 29
HLN2:30 pmHelena
12h 10m
1 stop
LHR9:40 amLondon Heathrow
Oct 6
LHR5:40 pmLondon Heathrow
29h 25m
2 stops
HLN4:05 pmHelena
$888
United Airlines
Sep 29
HLN5:20 pmHelena
12h 05m
1 stop
LHR12:25 pmLondon Heathrow
Oct 6
LHR11:25 amLondon Heathrow
16h 34m
1 stop
HLN8:59 pmHelena
$903
United Airlines
Sep 25
HLN2:30 pmHelena
43h 10m
2 stops
LHR4:40 pmLondon Heathrow
Sep 28
LHR2:05 pmLondon Heathrow
33h 00m
2 stops
HLN4:05 pmHelena
$913

Delta flights from Helena to London Heathrow Airport

Our best Delta deals on Helena to London Heathrow Airport flight tickets
Delta
Sep 27
HLN5:45 amHelena
23h 25m
2 stops
LHR12:10 pmLondon Heathrow
Oct 6
LHR6:15 amLondon Heathrow
23h 26m
2 stops
HLN10:41 pmHelena
$936
Delta
Sep 28
HLN12:50 pmHelena
14h 10m
1 stop
LHR10:00 amLondon Heathrow
Oct 4
LHR6:30 amLondon Heathrow
23h 04m
2 stops
HLN10:34 pmHelena
$974
Delta
Sep 27
HLN12:50 pmHelena
19h 45m
2 stops
LHR3:35 pmLondon Heathrow
Oct 4
LHR6:30 amLondon Heathrow
23h 04m
2 stops
HLN10:34 pmHelena
$978

momondo Fare Finder

 
Customize your flight search to find flights from Helena to London Heathrow Airport 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 832,500 searches. Data last updated April 12, 2026.
Use the filters below to find and compare flights from Helena to London Heathrow Airport that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

HelenaLondon

HLN - LHR

HLNLHR

Helena

Tue 9/29

2:30 pm-9:40 am

1 stop12h 10m

London Heathrow

Tue 10/6

5:40 pm-4:05 pm

2 stops29h 25m

$888
Quickest round-trip

HelenaLondon

HLN - LHR

HLNLHR

Helena

Tue 9/29

5:20 pm-12:25 pm

1 stop12h 05m

London Heathrow

Tue 10/6

11:25 am-8:59 pm

1 stop16h 34m

$903

HelenaLondon

HLN - LHR

HLNLHR

Helena

Tue 9/29

5:18 pm-1:45 pm

1 stop13h 27m

London Heathrow

Tue 10/6

4:25 pm-3:31 pm

2 stops30h 06m

$907

HelenaLondon

HLN - LHR

HLNLHR

Helena

Tue 9/29

5:18 pm-6:55 am

2 stops30h 37m

London Heathrow

Tue 10/6

4:25 pm-3:31 pm

2 stops30h 06m

$908

HelenaLondon

HLN - LHR

HLNLHR

Helena

Fri 9/25

2:30 pm-4:40 pm

2 stops43h 10m

London Heathrow

Mon 9/28

2:05 pm-4:05 pm

2 stops33h 00m

$913

HelenaLondon

HLN - LHR

HLNLHR

Helena

Mon 9/28

12:50 pm-10:00 am

1 stop14h 10m

London Heathrow

Tue 10/6

6:15 am-10:41 pm

2 stops23h 26m

$931

HelenaLondon

HLN - LHR

HLNLHR

Helena

Sun 9/27

2:30 pm-9:40 am

1 stop12h 10m

London Heathrow

Thu 10/8

7:30 am-8:59 pm

2 stops20h 29m

$935

HelenaLondon

HLN - LHR

HLNLHR

Helena

Sun 9/27

5:45 am-12:10 pm

2 stops23h 25m

London Heathrow

Tue 10/6

6:15 am-10:41 pm

2 stops23h 26m

$936

HelenaLondon

HLN - LHR

HLNLHR

Helena

Sun 9/27

2:30 pm-12:35 pm

1 stop15h 05m

London Heathrow

Tue 10/6

5:40 pm-4:05 pm

2 stops29h 25m

$937

HelenaLondon

HLN - LHR

HLNLHR

Helena

Fri 9/25

2:30 pm-4:40 pm

2 stops43h 10m

London Heathrow

Mon 9/28

2:50 pm-4:05 pm

1 stop32h 15m

$939

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 12 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 Heathrow 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

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

KLM and Virgin Atlantic are the most popular carriers operating from Helena to London Heathrow

When to book flights from Helena to London Heathrow Airport

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

Cheap Helena to London Heathrow Airport (HLN to LHR) flight deals and tips

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

Fastest flight time

12h 10m

Direct flights

None
The fastest flight from Helena to London Heathrow Airport takes 12h 10m
There are no direct flights from Helena to London Heathrow Airport. There are no popular flight routes from Helena to London Heathrow Airport.
Search flight deals

Frequently asked questions about flying from Helena to London Heathrow Airport

  • How far is Helena to London Heathrow by plane?

    The distance between Helena and London Heathrow is about 4539.0 mi. 12h 10m is a normal flight duration for this route.

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

    Prices for flights from Helena Airport to London Heathrow Airport were last updated today.

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

    The minimum age for a child to fly alone is five, but airlines offering an unaccompanied minor (UNMR) service may have their age restrictions, such as regulations concerning flight duration, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from Helena Airport to London Heathrow Airport.

  • What documentation or ID do you need to fly to London Heathrow Airport?

    The necessary travel and health documents for your London Heathrow Airport trip may vary depending on your travel plans and individual circumstances. Generally, you should have various documents, such as a national ID card or driver's license and a passport that is valid for six months beyond your scheduled arrival date. We recommend seeking advice from your airline or a trusted third party, such as IATA.

Traveling to a place near London?

Book flights to London if you plan to visit one of these locations
Gatwick
Hounslow
Milton Keynes
Luton
Dover
Hayes
Slough
Stratford-upon-Avon
Wembley
Crawley
Stansted
Croydon
Dartford
Brentwood
Cobham
Folkestone
Guildford
Romford
Harrow
Watford

Why use momondo?

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

Finding the right flight to London from Helena is quick and easy when you have a range of options in front of you, from reputable agents and recognisable airlines. Options that can then be filtered down to find the best fit. That is what momondo does. We make finding flights to London quick and easy, saving you time and money.

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

Yes. All flights to London from Helena on momondo can be compared and filtered by various policies on offer, including flexible booking.

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

Once all potential Helena 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 Helena to London right now. Can momondo alert me if prices change?

Yes momondo offers price alerts on flights to London from Helena. 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 Heathrow 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.
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