LON - HLN

Find Cheap Flights from London to Helena – Compare and Save

1 adult
1 adult, Economy, 0 bags

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Everything you should know

When to travel
June
Cheapest • 23% price drop
June
Most popular
Good to know
+1
Good to know
+1
Top stopover airports
Seattle/Tacoma Intl (SEA)
Cheapest • Avg £1,312 (return)
Denver Intl (DEN)
Shortest trip • 13h 18m (one-way)
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Cheap Flights from London to Helena (LON-HLN)

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

Recent return flight deals from London to Helena

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LON  London All airports-HLN Helena
4545 mimulti-stop
Multiple Airlines Logo
HLN  Helena-LON London All airports
4545 mimulti-stop
Multiple Airlines
Booking Insights

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

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

What is the cheapest London to Helena flight route?

There's little price difference between London to Helena routes. They average around £1,347 return, based on KAYAK data over the past 12 months.

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Key details for London to Helena flights

Low season

January
Most popular time to fly and prices are also 23% lower on average.

When to book flights from London to Helena

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

Your London to Helena flight questions, answered

Find helpful route details based on KAYAK data, including flight times, airports, airlines, and booking questions.

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

    Flights from London to Helena may depart from several airports in London area, including London City (LCY), London Gatwick (LGW), London Heathrow (LHR), London Luton (LTN), London Southend (SEN) and London Stansted (STN). Flights usually arrive at Helena (HLN).

  • Which cabin classes can I book on flights from London to Helena?

    Only Economy class is available on flights from London to Helena.

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

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

    • Seattle/Tacoma Intl (SEA) – 69% of one-stop connections
    • Denver Intl (DEN) – 28% of one-stop connections
    • Salt Lake City (SLC) – 3% of one-stop connections

    Seattle/Tacoma Intl (SEA) handles the largest share of one-stop connections on this route.

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

    Yes. Being flexible with your travel dates can save you up to 26% on the London to Helena route. Monday is the cheapest departure day at £1,031 return on average, while Sunday is the most expensive at £1,376, a difference of £345. 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 long is a flight from London to Helena?

    There are currently no direct flights available from London to Helena. Flights with 1 stopover take between 13h 18m and 16h 21m in total, depending on the connection.

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

    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 time can I save by choosing a different stopover airport from London to Helena?

    Flying via Denver Intl (DEN) gives the shortest average 1-stop total travel time of 13h 18m, compared to 13h 45m via Seattle/Tacoma Intl (SEA) and 16h 21m via Salt Lake City (SLC).

  • What is the time difference between London and Helena?

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

  • Which car hire options are available at Helena Airport (HLN)?

    Helena Airport (HLN) hosts 5 major car hire companies, with daily rates starting from around £19 for economy cars. Top options include:
    • Budget
    • Enterprise Rent-A-Car
    • Hertz
    • Avis
    • National

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

    Return flights from London to Helena range from £1,243 to £1,395, with an average of £1,347 over the past 12 months. Anything below £1,243 counts as a good deal.

Your guide to booking London to Helena 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 instead of Sunday. On this route, Monday flights average £1,031 – about £345 less than Sunday (25% savings) based on the last 12 months.
  • If you can choose when to travel, plan your London to Helena trip for June. Fares historically average £1,031 return in that month – typically £342 less than the most expensive month, which is July (based on the last 12 months).
  • If you're arriving late at night and need somewhere to stay, check out these hotels close to Helena Airport.
    - Days Inn by Wyndham Helena
    - Americas Best Value Inn & Suites Helena
    - Baymont by Wyndham Helena

More options for your flight from London to Helena

Complete your trip to Helena with a hotel stay or car hire

Car hire in Helena
Hotels in Helena
Holidays in Helena