Find flights
When to book
FAQs

Cheap flights from Great Falls to London Heathrow Airport from £482

This is the cheapest retur flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 25/10. Fares are subject to change and may not be available on all flights or dates of travel.
GTF — LHR
26 Feb — 5 Mar1
1 adult
1 adult, Economy, 0 bags

Cheap flight deals from Great Falls to Heathrow

Enter your travel dates to find the best prices.

Cheapest flights from Great Falls to Heathrow
Explore the most affordable flight options available from Great Falls to Heathrow. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 27 January 2026.

Sun 25/1006:15
GTF
-
LHR
1 stop21h 25m
United Airlines
Wed 4/1111:10
LHR
-
GTF
2 stops33h 19m
United Airlines
Deal found 25/1£482
Sun 25/1016:55
GTF
-
LHR
2 stops32h 00m
Multiple Airlines
Wed 4/1114:10
LHR
-
GTF
2 stops33h 03m
Multiple Airlines
Deal found 25/1£511
Wed 11/213:12
GTF
-
LHR
1 stop13h 48m
KLM
Sun 22/220:25
LHR
-
GTF
2 stops28h 08m
KLM
Deal found 26/1£608
Wed 11/206:10
GTF
-
LHR
2 stops21h 40m
United Airlines
Sun 22/211:10
LHR
-
GTF
2 stops33h 33m
United Airlines
Deal found 26/1£611
Fri 30/114:29
GTF
-
LHR
1 stop12h 11m
United Airlines
Tue 3/216:40
LHR
-
GTF
2 stops52h 08m
United Airlines
Deal found 25/1£615
Wed 11/213:12
GTF
-
LHR
1 stop13h 48m
Delta
Sun 22/210:45
LHR
-
GTF
1 stop18h 44m
Delta
Deal found 24/1£628

Find flight deals from Great Falls to Heathrow

Discover tips and strategies to find the most affordable flight options for your journey from Great Falls (GTF) to Heathrow (LHR). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated 27 January 2026.

Round-trip from

£608
KLM
  • KLM
  • 11/2-22/2
  • 3 total stops
  • 41h 56m total
  • Great Falls to London
Search Deals

Cheapflights Fare Finder

 
Customise your flight search to find flights from Great Falls to Heathrow 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, Cheapflights users made 858,174 searches. Data last updated 27 January 2026.
Use the filters below to find and compare flights from Great Falls to London Heathrow Airport that are best for you.

Fly from

Great Falls

Fly to

Heathrow

Route

Depart

Return

Price

Great FallsLondon

GTF - LHR

GTFLHR

Great Falls

Wed 11/2

13:12-10:00

1 stop13h 48m

London Heathrow

Sun 22/2

20:25-17:33

2 stops28h 08m

£608

Great FallsLondon

GTF - LHR

GTFLHR

Great Falls

Wed 11/2

14:29-21:20

2 stops23h 51m

London Heathrow

Sun 22/2

11:10-13:43

2 stops33h 33m

£611

Great FallsLondon

GTF - LHR

GTFLHR

Great Falls

Wed 11/2

13:12-10:00

1 stop13h 48m

London Heathrow

Sun 22/2

10:45-22:29

1 stop18h 44m

£628

Great FallsLondon

GTF - LHR

GTFLHR

Great Falls

Wed 11/2

05:25-17:40

3 stops29h 15m

London Heathrow

Sun 22/2

10:20-12:30

3 stops33h 10m

£1,560

Flights are sorted by cheapest return flights first.

Deals found on 24/1

Best time to book a flight from Great Falls to Heathrow

Have a flexible travel schedule? Discover the best time to fly to Heathrow from Great Falls with our price prediction graph.
Estimated return price
Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.

Related info for your journey

Find useful and relevant information for your journey from Great Falls to Heathrow. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • What airport do you fly from for flights from Great Falls to London Heathrow?

    Great Falls (GTF), located 3.5 mi from the city center, is the airport you fly out of when you book flights from Great Falls to London Heathrow. 0 airlines have flights from Great Falls to London Heathrow on a regular basis. Booking flights from Great Falls to London Heathrow should not be difficult; the airport handles an average of 0 outbound flights to London Heathrow per day.

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

    Airlines like KLM and United Airlines fly from Great Falls to London Heathrow Airport in about 13h 48m. The time it takes to get you to your destination can typically vary by up to 10h 03m. The distance between Great Falls and London Heathrow Airport is about 4472 mi. When browsing for deals, the options you’ll see will be for both direct flights and flights with stops.

  • Can I find deals for flights from Great Falls to Heathrow that include hotel bookings?

    Yes. In addition to deals on Great Falls to Heathrow flights, Cheapflights offers holiday packages that include both flights and hotel.

  • How can I find direct flights from Great Falls to Heathrow?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Great Falls to Heathrow.

  • Can I find deals for business class flights from Great Falls to Heathrow?

    Yes. Cheapflights offers flight deals from Great Falls to Heathrow by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

See more FAQs

Travelling to a place near London Heathrow Airport?

Book flights to London Heathrow Airport if you plan to visit one of these locations
Milton Keynes
Luton
Croydon
Wembley
Northampton
Gatwick
Slough
Hounslow
Ilford
Brentford
Hayes
Watford
Colchester
Guildford
Swindon
Chelmsford
Bedford
Crawley
Kingston upon Thames
Eastbourne

Browse thousands of different options on Cheapflights for your next trip

Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.

Alternative routes for Great Falls to Heathrow

See prices for flight routes from nearby airports that may be better suited for you.
Bozeman to Heathrow flights
Kalispell to Heathrow flights
Missoula to Heathrow flights
Billings to Heathrow flights
Missoula to Gatwick flights

Fly with Cheapflights

Find the best flight deals on Cheapflights, where travellers can enjoy low prices and a wide availability of flights to their desired destinations.

How does Cheapflights help users find flights from Great Falls to Heathrow?

Cheapflights goes through 900+ travel sites to look for the best flight deals for flights from Great Falls to Heathrow. Too many options? Cheapflights also provides filters for things like airlines, price ranges, and number of stops to help you make a decision easily.

Why should you use Cheapflights to find cheap flight tickets from Great Falls to Heathrow?

Cheapflights taps into our reliable network of hundreds of airlines and travel agencies to find the best deals for flights from Great Falls to Heathrow for you. Better yet — we are completely free to use.

Can Cheapflights find flights from Great Falls to Heathrow with no change fees?

Yes, we can. To see specific flights from Great Falls to Heathrow with no change fees, users can toggle flexible booking options after using the search form above to find flights.

Can Cheapflights notify me if prices for flights from Great Falls to Heathrow become cheaper?

Of course! You can now track prices for flights from Great Falls to Heathrow and get an alert from Cheapflights when they change. Have a valid email address ready and click the bell icon next to the flight deals above to set up your price alerts.

100% Free

Cheapflights is completely free to use, so you can start saving the moment you arrive.

Book with Flexibility

Our users can plan ahead with confidence and find flights with no change fees

Travel Smart

Millions of people come to us for their flight needs every year. We help make travel planning easy by providing useful insights and data-driven graphs that can inform your decisions.