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Cheap flights from Great Falls to London Heathrow Airport from £445

This is the cheapest retur flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 12/11. Fares are subject to change and may not be available on all flights or dates of travel.
GTF — LHR
28 Nov — 5 Dec1
1 adult
1 adult, Economy, 0 bags

Cheap 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 29 October 2025.

Round-trip from

£445
Delta
  • Delta
  • 9/11-25/11
  • 3 total stops
  • 56h 00m total
  • Great Falls to London
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Find 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 29 October 2025.

Sun 9/1118:10GTF - LHR
1 stop32h 50mDelta
Tue 25/1106:20LHR - GTF
2 stops23h 10mDelta
Deal found 27/10£445
Mon 10/1105:30GTF - LHR
1 stop21h 30mDelta
Wed 26/1111:45LHR - GTF
2 stops36h 45mDelta
Deal found 27/10£446
Tue 11/1105:30GTF - LHR
2 stops21h 45mDelta
Tue 25/1106:20LHR - GTF
2 stops18h 10mDelta
Deal found 27/10£448
Tue 11/1105:30GTF - LHR
3 stops20h 30mDelta
Wed 26/1111:45LHR - GTF
2 stops36h 45mDelta
Deal found 27/10£449
Mon 17/1105:30GTF - LHR
3 stops20h 30mDelta
Tue 25/1110:45LHR - GTF
1 stop13h 45mDelta
Deal found 27/10£454
Tue 11/1105:30GTF - LHR
3 stops20h 30mDelta
Mon 24/1117:35LHR - GTF
2 stops30h 55mDelta
Deal found 27/10£458
Tue 11/1114:30GTF - LHR
1 stop12h 10mUnited Airlines
Thu 27/1106:35LHR - GTF
2 stops37h 58mUnited Airlines
Deal found 27/10£465
Wed 12/1114:30GTF - LHR
2 stops25h 25mUnited Airlines
Wed 26/1106:35LHR - GTF
2 stops37h 58mUnited Airlines
Deal found 27/10£470
Fri 14/1113:12GTF - LHR
1 stop13h 48mDelta
Thu 27/1110:45LHR - GTF
1 stop13h 45mDelta
Deal found 27/10£488
Thu 13/1118:10GTF - LHR
1 stop32h 50mDelta
Wed 26/1110:45LHR - GTF
1 stop13h 45mDelta
Deal found 27/10£488
Thu 13/1113:12GTF - LHR
2 stops23h 58mDelta
Thu 27/1110:45LHR - GTF
1 stop13h 45mDelta
Deal found 27/10£491

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 29 October 2025.
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 12/11

13:12-10:00

1 stop13h 48m

London Heathrow

Tue 25/11

06:20-22:30

2 stops23h 10m

£445

Great FallsLondon

GTF - LHR

GTFLHR

Great Falls

Mon 17/11

18:10-10:00

1 stop32h 50m

London Heathrow

Tue 25/11

06:20-17:30

2 stops18h 10m

£445

Great FallsLondon

GTF - LHR

GTFLHR

Great Falls

Sun 9/11

18:10-10:00

1 stop32h 50m

London Heathrow

Tue 25/11

06:20-22:30

2 stops23h 10m

£445

Great FallsLondon

GTF - LHR

GTFLHR

Great Falls

Tue 11/11

13:12-10:00

1 stop13h 48m

London Heathrow

Wed 26/11

20:25-17:30

2 stops28h 05m

£446

Great FallsLondon

GTF - LHR

GTFLHR

Great Falls

Mon 17/11

13:12-10:00

1 stop13h 48m

London Heathrow

Wed 26/11

11:45-17:30

2 stops36h 45m

£446

Great FallsLondon

GTF - LHR

GTFLHR

Great Falls

Sun 16/11

18:10-10:00

1 stop32h 50m

London Heathrow

Wed 26/11

11:45-17:30

2 stops36h 45m

£446

Great FallsLondon

GTF - LHR

GTFLHR

Great Falls

Tue 11/11

05:30-09:00

3 stops20h 30m

London Heathrow

Tue 25/11

06:20-17:30

2 stops18h 10m

£448

Great FallsLondon

GTF - LHR

GTFLHR

Great Falls

Mon 10/11

05:30-12:50

2 stops24h 20m

London Heathrow

Tue 25/11

06:20-22:30

2 stops23h 10m

£448

Great FallsLondon

GTF - LHR

GTFLHR

Great Falls

Sat 8/11

18:09-06:20

2 stops29h 11m

London Heathrow

Wed 26/11

11:45-17:30

2 stops36h 45m

£449

Great FallsLondon

GTF - LHR

GTFLHR

Great Falls

Wed 12/11

05:30-10:30

2 stops22h 00m

London Heathrow

Wed 26/11

11:45-17:30

2 stops36h 45m

£449

Flights are sorted by cheapest return flights first.

Deals found on 27/10

Showing 1-10 of 11 results
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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 Delta 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 . The distance between Great Falls and London Heathrow Airport is about 4472 mi.

  • 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
Croydon
Slough
Gatwick
Hounslow
Northampton
Luton
Ilford
Wembley
Deal
Hayes
Colchester
Watford
Winchester
Chichester
Swindon
Crawley
Romford
Brentford
Ipswich

Browse thousands of different options on Cheapflights for your next trip

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Alternative routes for Great Falls to Heathrow

See prices for flight routes from nearby airports that may be better suited for you.
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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.

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