GTF - LHR

£562 Find Cheap Flights from Great Falls to London – Compare and Save

1 adult
1 adult, Economy, 0 bags

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Everything you should know

Cheapest return flight
£562
Typical prices: £762-£1,304
Alaska Airlines
Sat 10/11Tue 13/11
GTF - LHR • 1 stop
Direct flights
Not available
There are currently no direct flights between Great Falls and London Heathrow Airport. You'll need to take a connecting flight to reach the destination.
Insights
Insights
When to travel
November
Cheapest • 53% price drop
May
Most popular
Good to know
+1
Good to know
+1
Top stopover airports
Seattle/Tacoma Intl (SEA)
Cheapest • Avg £794 (return)
Denver Intl (DEN)
Shortest trip • 13h 40m (one-way)
Insights
Insights
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We hope you enjoy your trip to London Heathrow Airport!
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Flight Deals

Cheap Flights from Great Falls to Heathrow (GTF-LHR)

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

Recent return flight deals from Great Falls to Heathrow

Tue, 10 Nov - Fri, 13 Nov
Alaska Airlines Logo
16:59 - 12:20GTF  Great Falls-LHR London Heathrow
12h 21m1 stop Seattle/Tacoma Intl
Alaska Airlines Logo
14:45 - 16:19LHR  London Heathrow-GTF Great Falls
32h 34m1 stop Seattle/Tacoma Intl
£562Alaska Airlines
Tue, 3 Nov - Fri, 13 Nov
Delta Logo
05:40 - 07:05GTF  Great Falls-LHR London Heathrow
18h 25m2 stops Salt Lake City Minneapolis St Paul
Delta Logo
09:50 - 22:46LHR  London Heathrow-GTF Great Falls
19h 56m2 stops Minneapolis St Paul Salt Lake City
£578Delta
Tue, 3 Nov - Wed, 18 Nov
Delta Logo
13:18 - 06:25GTF  Great Falls-LHR London Heathrow
34h 07m2 stops Salt Lake City Atlanta Hartsfield-Jackson
Delta Logo
16:00 - 12:41LHR  London Heathrow-GTF Great Falls
27h 41m2 stops Atlanta Hartsfield-Jackson Salt Lake City
£582Delta
Fri, 6 Nov - Mon, 16 Nov
Multiple Airlines Logo
13:18 - 10:00GTF  Great Falls-LHR London Heathrow
13h 42m1 stop Salt Lake City
Multiple Airlines Logo
20:25 - 17:39LHR  London Heathrow-GTF Great Falls
28h 14m2 stops Amsterdam Schiphol Salt Lake City
£592Multiple Airlines
Tue, 3 Nov - Mon, 16 Nov
Delta Logo
13:18 - 13:45GTF  Great Falls-LHR London Heathrow
17h 27m2 stops Salt Lake City Paris Charles de Gaulle
Delta Logo
17:35 - 17:39LHR  London Heathrow-GTF Great Falls
31h 04m2 stops Paris Charles de Gaulle Salt Lake City
£593Delta
Thu, 5 Nov - Mon, 16 Nov
KLM Logo
05:40 - 07:05GTF  Great Falls-LHR London Heathrow
18h 25m2 stops Salt Lake City Minneapolis St Paul
KLM Logo
17:50 - 17:39LHR  London Heathrow-GTF Great Falls
30h 49m2 stops Amsterdam Schiphol Salt Lake City
£595KLM
Thu, 29 Oct - Thu, 5 Nov
Alaska Airlines Logo
17:15 - 12:20GTF  Great Falls-LHR London Heathrow
13h 05m1 stop Seattle/Tacoma Intl
Alaska Airlines Logo
14:45 - 16:30LHR  London Heathrow-GTF Great Falls
32h 45m1 stop Seattle/Tacoma Intl
£599Alaska Airlines
Wed, 4 Nov - Sat, 14 Nov
Delta Logo
13:18 - 10:00GTF  Great Falls-LHR London Heathrow
13h 42m1 stop Salt Lake City
Delta Logo
10:45 - 17:39LHR  London Heathrow-GTF Great Falls
13h 54m1 stop Salt Lake City
£611Delta
Thu, 29 Oct - Thu, 5 Nov
KLM Logo
13:18 - 16:05GTF  Great Falls-LHR London Heathrow
20h 47m2 stops Salt Lake City Amsterdam Schiphol
KLM Logo
17:05 - 17:47LHR  London Heathrow-GTF Great Falls
31h 42m2 stops Amsterdam Schiphol Salt Lake City
£615KLM
Thu, 29 Oct - Thu, 5 Nov
KLM Logo
13:18 - 10:45GTF  Great Falls-LHR London Heathrow
15h 27m2 stops Salt Lake City Amsterdam Schiphol
KLM Logo
10:45 - 17:47LHR  London Heathrow-GTF Great Falls
14h 02m1 stop Salt Lake City
£620KLM
Booking Insights

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

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

How much is a return flight from Great Falls to London Heathrow Airport?

Return flights from Great Falls to London Heathrow Airport start at £562. Prices are below average for this route right now, with typical return fares ranging from £762 to £1,304. The lowest price found in the past 5 days was £562 on Alaska Airlines.

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

Monday is the cheapest day of the week to fly from Great Falls to London Heathrow Airport and is 25% cheaper than the average day. Friday is the most expensive day with flight prices 46% higher than average. Based on deals found by KAYAK users in the last 12 months.

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Key details for Great Falls to London Heathrow Airport flights

Low season

September

When to book flights from Great Falls to Heathrow

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

Your Great Falls to London Heathrow Airport 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 Great Falls to London Heathrow Airport?

    Flights from Great Falls to London Heathrow Airport usually depart from Great Falls (GTF) and arrive at London Heathrow (LHR).

  • Which cabin classes can I book on flights from Great Falls to London Heathrow Airport?

    Only Economy class is available on flights from Great Falls to London Heathrow Airport.

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

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

    • Denver Intl (DEN) – 48% of one-stop connections
    • Seattle/Tacoma Intl (SEA) – 28% of one-stop connections
    • Salt Lake City (SLC) – 24% of one-stop connections

    Denver Intl (DEN) handles the largest share of one-stop connections on this route.

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

    Yes. Being flexible with your travel dates can save you up to 49% on the Great Falls to London Heathrow Airport route. Monday is the cheapest departure day at £715 return on average, while Friday is the most expensive at £1,396, a difference of £682. KAYAK's flexible dates feature shows options up to 3 days before and after your selected dates, making it easier to compare nearby fares.

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

    Some of the most popular sights in London Heathrow Airport are London Victoria Station, London Euston Railway Station, and Hyde Park. These are among the most viewed places in London Heathrow Airport on KAYAK.

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

    A direct flight from Great Falls to London Heathrow Airport takes 0h 00m, covering 4,472 miles.

  • Do I need a passport to fly from Great Falls 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.

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

    Yes. Based on fares seen in the past 5 days, return flight prices on this route showed a wide range, from about £562 to £1,588. That means the highest observed fare was about 3x higher than the lowest one.

  • How much time can I save by choosing a different stopover airport from Great Falls to London Heathrow Airport?

    Flying via Seattle/Tacoma Intl (SEA) gives the shortest average 1-stop total travel time of 13h 34m, compared to 13h 40m via Denver Intl (DEN) and 14h 31m via Salt Lake City (SLC).

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

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

  • Which car hire options are available at London Heathrow Airport (LHR)?

    London Heathrow Airport (LHR) hosts 5 major car hire companies, with daily rates starting from around £5 for economy cars. Top options include:
    • GREEN MOTION
    • DRIVALIA
    • Europcar
    • Alamo
    • Hertz

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

    Return flights from Great Falls to London Heathrow Airport range from £762 to £1,304, with an average of £952 over the past 12 months. Anything below £762 counts as a good deal.

Your guide to booking Great Falls 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 instead of Friday. On this route, Monday flights average £715 – about £682 less than Friday (49% savings) based on the last 12 months.
  • If you can choose when to travel, plan your Great Falls to London Heathrow Airport trip for November. Fares historically average £444 return in that month – typically £879 less than the most expensive month, which is June (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 Great Falls to Heathrow

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

Car hire in London
Hotels in London
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