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HLN - LHR

$824 Find Cheap Flights from Helena to London - Compare and Save

1 adult
1 adult, Economy, 0 bags

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Everything you should know

Cheapest round-trip
$824
Typical prices: $794-$1,315
United Airlines
Fri 3/2Sun 3/4
HLN - LHR • 2 stops
When to travel
March
Cheapest • 41% price drop
January
Most popular
Good to know
+1
Good to know
+1
Top layover airports
Salt Lake City (SLC)
Cheapest • Avg $914 (round-trip)
Seattle/Tacoma Intl (SEA)
Shortest trip • 13h 26m (one-way)
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Flight Deals

Cheap Flights from Helena to Heathrow (HLN-LHR)

 
Discover the best prices for you by selecting your travel dates on KAYAK.

Recent round-trip flight deals from Helena to Heathrow

Tue, Mar 2 - Thu, Mar 4
United Airlines Logo
7:00 am - 5:05 pmHLN  Helena-LHR London Heathrow
27h 05m2 stops Denver Intl Munich Franz Josef Strauss
United Airlines Logo
11:10 am - 8:59 pmLHR  London Heathrow-HLN Helena
40h 49m2 stops Toronto Pearson Intl Denver Intl
$824United Airlines
Tue, Mar 2 - Thu, Mar 4
United Airlines Logo
2:30 pm - 10:55 pmHLN  Helena-LHR London Heathrow
25h 25m2 stops Denver Intl Munich Franz Josef Strauss
United Airlines Logo
11:10 am - 8:59 pmLHR  London Heathrow-HLN Helena
40h 49m2 stops Toronto Pearson Intl Denver Intl
$824United Airlines
Tue, Mar 2 - Thu, Mar 4
United Airlines Logo
7:00 am - 9:40 amHLN  Helena-LHR London Heathrow
19h 40m1 stop Denver Intl
United Airlines Logo
9:30 am - 8:59 pmLHR  London Heathrow-HLN Helena
42h 29m2 stops Frankfurt am Main Denver Intl
$825United Airlines
Tue, Mar 2 - Thu, Mar 4
United Airlines Logo
7:00 am - 5:05 pmHLN  Helena-LHR London Heathrow
27h 05m2 stops Denver Intl Munich Franz Josef Strauss
United Airlines Logo
11:10 am - 8:59 pmLHR  London Heathrow-HLN Helena
40h 49m2 stops Toronto Pearson Intl Denver Intl
$825United Airlines
Tue, Mar 2 - Thu, Mar 4
United Airlines Logo
7:00 am - 9:40 amHLN  Helena-LHR London Heathrow
19h 40m1 stop Denver Intl
United Airlines Logo
9:30 am - 8:59 pmLHR  London Heathrow-HLN Helena
42h 29m2 stops Frankfurt am Main Denver Intl
$826United Airlines
Tue, Mar 2 - Thu, Mar 4
United Airlines Logo
7:00 am - 12:00 pmHLN  Helena-LHR London Heathrow
22h 00m2 stops Denver Intl Chicago O'Hare Intl
United Airlines Logo
7:30 am - 8:59 pmLHR  London Heathrow-HLN Helena
20h 29m2 stops Frankfurt am Main Denver Intl
$830United Airlines
Sat, Dec 5 - Sun, Dec 13
Air France Logo
1:10 pm - 10:00 amHLN  Helena-LHR London Heathrow
13h 50m1 stop Salt Lake City
Air France Logo
10:45 am - 10:32 pmLHR  London Heathrow-HLN Helena
18h 47m1 stop Salt Lake City
$852Air France
Sat, Dec 5 - Sun, Dec 13
Air France Logo
1:10 pm - 10:00 amHLN  Helena-LHR London Heathrow
13h 50m1 stop Salt Lake City
Air France Logo
9:50 am - 10:32 pmLHR  London Heathrow-HLN Helena
19h 42m2 stops Minneapolis St Paul Salt Lake City
$856Air France
Sat, Dec 5 - Sun, Dec 13
Air France Logo
1:10 pm - 1:45 pmHLN  Helena-LHR London Heathrow
17h 35m2 stops Salt Lake City Paris Charles de Gaulle
Air France Logo
9:50 am - 10:32 pmLHR  London Heathrow-HLN Helena
19h 42m2 stops Minneapolis St Paul Salt Lake City
$875Air France
Tue, Jan 5 - Wed, Jan 13
Multiple Airlines Logo
6:15 am - 9:40 amHLN  Helena-LHR London Heathrow
20h 25m1 stop Denver Intl
Multiple Airlines Logo
6:30 am - 9:32 pmLHR  London Heathrow-HLN Helena
22h 02m2 stops Frankfurt am Main Denver Intl
$885Multiple Airlines
Booking Insights

Price, demand and travel trends for Helena to London Heathrow Airport flights

Use KAYAK data on prices, travel dates, airlines and seasonal trends to compare options and book flights with more confidence.

How much is a round-trip flight from Helena to London Heathrow Airport?

Round-trip flights from Helena to London Heathrow Airport typically range from $794 to $1,315. The lowest price found in the past 5 days was $824, on United Airlines.

What's the cheapest day of the week to fly from Helena to London Heathrow Airport?

Based on deals KAYAK users found in the last 12 months, Monday is the cheapest day of the week to fly from Helena to London Heathrow Airport. It’s 42% cheaper than the average day, while Sunday is the most expensive, with prices 20% higher.

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Key details for Helena to London Heathrow Airport flights

Low season

June

Cheapest flight

$824
The most popular month to fly with an average 50% increase in travelers.
Round-trip flight from Helena to London Heathrow Airport

When to book flights from Helena to Heathrow

Are your dates flexible? Find out the best times to travel from Helena to Heathrow based on our flight data from the last year. Discover the cheapest month and even day to fly.
Estimated round-trip price

Your Helena to London Heathrow Airport flight questions, answered

Find helpful answers about this route, including flight times, airports, airlines and booking tips.

  • What cabin classes can I book on flights from Helena to London Heathrow Airport?

    Only Economy Class is available on flights from Helena to London Heathrow Airport.

  • How long is a flight from Helena to London Heathrow Airport?

    There are currently no nonstop flights available from Helena to London Heathrow Airport. Flights with 1 layover take between 13h 26m and 16h 25m in total, depending on the connection.

  • Do I need a passport to fly from Helena to London Heathrow Airport?

    Yes, a valid passport is required for this international route. Many destinations require at least six months of validity beyond your travel dates. Check your passport expiry well before booking.

  • How much should I expect to pay for a Helena to London Heathrow Airport flight?

    Round-trip flights from Helena to London Heathrow Airport range from $794 to $1,315, with an average of $1,169 over the past 12 months. Anything below $794 counts as a good deal.

  • Have flight prices from Helena to London Heathrow Airport changed much recently?

    Yes. Based on fares seen in the past 5 days, round-trip prices on this route showed a wide range, from about $824 to $5,666. That means the highest observed fare was about 7x higher than the lowest one.

  • What car rental options are available at London Heathrow Airport (LHR)?

    London Heathrow Airport (LHR) hosts 5 major car rental companies, with daily rates starting from around $7 for economy cars. Top options include:

    • GREEN MOTION
    • DRIVALIA
    • Europcar
    • Alamo
    • Hertz

  • Which airports can I use when flying from Helena to London Heathrow Airport?

    Flights from Helena to London Heathrow Airport usually depart from Helena (HLN) and arrive at London Heathrow (LHR).

  • Which airports do connecting flights from Helena to London Heathrow Airport pass through?

    One-stop flights from Helena to London Heathrow Airport most commonly connect through:

    • Denver Intl (DEN) - 56% of one-stop connections
    • Seattle/Tacoma Intl (SEA) - 28% of one-stop connections
    • Salt Lake City (SLC) - 17% of one-stop connections

  • Can I save money by using flexible dates for flights from Helena to London Heathrow Airport?

    Yes. Flexible dates can save you up to 52% on flights from Helena to London Heathrow Airport. Monday is the cheapest departure day at $684 round-trip on average, while Sunday is the most expensive at $1,410, a difference of $726.

    KAYAK's flexible dates feature shows options up to 3 days before and after your selected dates, making it easier to compare nearby fares.

  • How much time can I save by choosing a different layover airport from Helena to London Heathrow Airport?

    Flying via Seattle/Tacoma Intl (SEA) gives the shortest average 1-stop total travel time at 13h 26m, compared with 13h 38m via Denver Intl (DEN) and 16h 25m via Salt Lake City (SLC).

  • What is the time difference between Helena and London Heathrow Airport?

    London Heathrow Airport is 7 hours ahead of Helena (British Time vs Mountain Time). Plan for the time shift when scheduling connections or first-day activities.

  • What popular places can I visit in London Heathrow Airport?

    Some of the most popular sights in London Heathrow Airport are Hyde Park and Buckingham Palace. These are among the most viewed places in London Heathrow Airport on KAYAK.

Your guide to booking Helena to London Heathrow Airport flights

Get tips on when to book, when to fly and what to know before your trip.
  • If your dates are flexible, aim for a Monday departure and avoid flying on Sunday. On this route, Monday flights average $684, about $726 less than Sunday fares (51% savings) based on the last 12 months.
  • If you can choose when to travel, plan your Helena to London Heathrow Airport trip for March. Fares historically average $684 round-trip in that month - typically $794 less than the most expensive month, which is May (based on the last 12 months).
  • If you're arriving late at night and need somewhere to stay, check out these hotels close to London Heathrow Airport.

    • Hilton London Heathrow Airport

More options for your flight from Helena to Heathrow

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