The cheapest times to fly from LHR to BTM are

  • January 1st to March 25th
  • April 16th to May 20th
  • October 29th to December 9th (except the week of November 26th)

based on data collected exclusively by Champion Traveler across tens of millions of flights. Among all the dates above, the very cheapest time to fly from LHR to BTM is mid February. Prices can be as high as $1993 for Saturday flights during early August, or as low as $837 for Tuesday flights around mid February.


When to Fly to Butte

Flying from London (LHR) to Butte, MT (BTM) will usually cost between $837 to $1713 per person if booking more than four weeks in advance. On average the very cheapest time to fly is mid February with an average ticket price of $884. Due to high demand the most expensive time to fly is early August, with an average price of $1806. Planning your trip to low-cost times can easily save you $922 on economy flights and even more on first-class flights. Generally, any price below $1117 can be considered a good price for a round-trip LHR to BTM flight.

See below for a graph of average weekly prices for the LHR to BTM route. All prices are for round-trip tickets in USD.

LHR to BTM Flight Prices

Compared to other flights, the LHR to BTM flight is slightly more expensive than the average and costs more than the average flight leaving from London. The average price per mile (for a direct flight) is $0.15, which is far below average.


Flight Prices by Day of the Week

Tuesday is usually the cheapest day to depart and return on this flight. Saturdays are the most expensive days to fly out or take a return trip. Selecting flights on the least expensive days could save you up to $222 (15%) on this flight.

Departing prices are for round-trip flights returning on the day of departure. For example, a flight departing on Tuesday and returning a week later will cost an average of $1077. Return trip prices are from the BTM to LHR flight, and often highlight the quality of our data in showing the same trend.

Departing Prices by Day

Departure Day Prices

Return Trip Prices by Day

Return Day Prices


Nonstop Flights and Layovers

Travelers looking to fly from LHR to BTM can generally find a 1-layover flight. Because there is not usually a direct flight option the real-world direct flight time of 9 hour 15 minutes may not be realistic.


Alternative Nearby Airports

Champion Traveler tells you which airports are nearby and whether tickets might be cheaper alternative airports nearby. Sometimes it’s worth it to fly into a closer airport and then commute to your destination. Remember that there is not usually a nonstop flight from LHR to BTM while comparing.

Destination alternative #1: Helena Regional Airport (HLN) in Helena, MT

  • 51 miles (82 km) away from BTM
  • Usually 24.80% less expensive than BTM
  • 1-layover flights available

See LHR to HLN flights

Destination alternative #2: Great Falls International Airport (GTF) in Great Falls, MT

  • 118 miles (190 km) away from BTM
  • Usually 16.74% less expensive than BTM
  • 1-layover flights available

See LHR to GTF flights

Destination alternative #3: Missoula International Airport (MSO) in Missoula, MT

  • 101 miles (163 km) away from BTM
  • Usually 1.12% less expensive than BTM
  • 1-layover flights available

See LHR to MSO flights


Flight Hacking LHR to BTM

Flight hacking is when you book two tickets instead of a layover, sometimes with different airlines. You will need to either bring only a carry-on bag (highly recommended) or leave yourself plenty of time to go through security again. Flight hacking is completely allowed, but airlines don’t always tell you the cheapest way to get from LHR to BTM — but Champion Traveler does!

Hack #1: San Jose, CA (LHR > SJC > BTM)

  • Price for both tickets: $785
  • Average savings: $332 (29.72%)

See LHR to SFO flights

Hack #2: San Francisco, CA (LHR > SFO > BTM)

  • Price for both tickets: $795
  • Average savings: $322 (28.83%)

See LHR to SJC flights

Hack #3: Denver, CO (LHR > DEN > BTM)

  • Price for both tickets: $806
  • Average savings: $311 (27.84%)

See LHR to DEN flights


Flight Questions Answered

Still have questions about flying from LHR to BTM? We’ve got answers.

Which airlines fly this route?

You can find 8 major airlines flying this route most often: Air France, British Airways, Delta, Finnair, Iberia, KLM, United, Virgin Atlantic, and potentially more during busy seasons.

How far away is it from Bert Mooney Airport to London Heathrow Airport?

The distance between the two airports is roughly 4589 miles or 7385 kilometers.

How long does it take to fly from LHR to BTM?

The real-world flight time for a nonstop LHR to BTM flight is about 9 hour 15 minutes.

How many flights go between London and Butte, MT?

It depends on the day of the week and the date, but a typical day might have around 9 available flights from LHR to BTM.


Airport Location Info


Departing Airport

Origination code LHR
Origination airport name London Heathrow Airport
City London
Country the United Kingdom
Latitude 51.5
Longitude -0.5

Return Airport

Destination code BTM
Destination airport name Bert Mooney Airport
City Butte, MT
Country the United States
Latitude 46
Longitude -112.5


Other Resources

Please note that while we’ve worked hard to analyzed tens of millions of flights to get you this data, we do not calculate current live prices or guarantee pricing. Please see our partners using the links above for current offers.