The cheapest times to fly from BTM to STN are

  • January 1st to April 22nd (except the weeks of January 8th and March 26th)
  • May 14th to June 3rd (except the week of May 21st)
  • July 30th to August 19th (except the week of August 6th)
  • October 29th to December 16th

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 BTM to STN is early January. Prices can be as high as $19500 for Saturday flights during early July, or as low as $5436 for Tuesday flights around early January.


When to Fly to London

Flying from Butte, MT (BTM) to London (STN) will usually cost between $5997 to $18500 per person if booking more than four weeks in advance. On average the very cheapest time to fly is early January with an average ticket price of $6127. Due to high demand the most expensive time to fly is early July, with an average price of $19500. Planning your trip to low-cost times can easily save you $13373 on economy flights and even more on first-class flights. Generally, any price below $8268 can be considered a good price for a round-trip BTM to STN flight.

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

BTM to STN Flight Prices

Compared to other flights, the BTM to STN flight is more expensive than the average and costs more than the average flight leaving from Butte. The average price per mile (for a direct flight) is $1.12, which is above 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 to London, and Fridays are the most expensive days to return to Butte. Selecting flights on the least expensive days could save you up to $3727 (31%) 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 $7551. Return trip prices are from the STN to BTM 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 BTM to STN can generally find a 0-layover flight. Because there is a direct flight option the real-world direct flight time of 9 hour 15 minutes may 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 a nonstop flight from BTM to STN while comparing.

Destination alternative #1: London Heathrow Airport (LHR) in London

  • 41 miles (66 km) away from STN
  • Usually 83.79% less expensive than STN
  • 1-layover flights available

See BTM to LHR flights


Flight Hacking BTM to STN

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 BTM to STN — but Champion Traveler does!

Hack #1: San Francisco, CA (BTM > SFO > STN)

  • Price for both tickets: $1093
  • Average savings: $7175 (86.78%)

See BTM to SFO flights

Hack #2: San Jose, CA (BTM > SJC > STN)

  • Price for both tickets: $1098
  • Average savings: $7170 (86.72%)

See BTM to SJC flights

Hack #3: Los Angeles, CA (BTM > LAX > STN)

  • Price for both tickets: $1131
  • Average savings: $7137 (86.32%)

See BTM to LAX flights


Flight Questions Answered

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

Which airlines fly this route?

You can find 10 major airlines flying this route most often: Air Canada, Air France, Delta, Eurowings, KLM, Loganair, Lufthansa, SAS, SWISS, United, and potentially more during busy seasons.

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

The distance between the two airports is roughly 4590 miles or 7387 kilometers.

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

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

How many flights go between Butte, MT and London?

It depends on the day of the week and the date, but a typical day might have around 24 available flights from BTM to STN.


Airport Location Info


Departing Airport

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

Return Airport

Destination code STN
Destination airport name London Stansted Airport
City London
Country the United Kingdom
Latitude 51.9
Longitude 0.2


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.