The cheapest times to fly from LCY to HLN are

  • January 1st to March 25th
  • April 23rd to May 13th
  • October 22nd to December 9th (except the week of November 19th)

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 LCY to HLN is late January and early February. Prices can be as high as $2289 for Saturday flights during early to mid July, or as low as $733 for Monday flights around late January and early February.


When to Fly to Helena

Flying from London (LCY) to Helena, MT (HLN) will usually cost between $774 to $1775 per person if booking more than four weeks in advance. On average the very cheapest time to fly is late January and early February with an average ticket price of $811. Due to high demand the most expensive time to fly is early to mid July, with an average price of $1765. Planning your trip to low-cost times can easily save you $954 on economy flights and even more on first-class flights. Generally, any price below $1126 can be considered a good price for a round-trip LCY to HLN flight.

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

LCY to HLN Flight Prices

Compared to other flights, the LCY to HLN flight is slightly more expensive than the average and costs slightly 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

Monday is usually the cheapest day to fly to HLN, and Tuesday the cheapest day to fly back into LCY. 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 $397 (23%) on this flight.

Departing prices are for round-trip flights returning on the day of departure. For example, a flight departing on Monday and returning a week later will cost an average of $1048. Return trip prices are from the HLN to LCY 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 LCY to HLN can generally find a 2-layover flight. Because there is not usually a direct flight option the real-world direct flight time of 9 hour 11 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 LCY to HLN while comparing.

Destination alternative #1: Bozeman Yellowstone International Airport (BZN) in Bozeman, MT

  • 70 miles (113 km) away from HLN
  • Usually 16.79% less expensive than HLN
  • 2-layover flights available

See LCY to BZN flights


Flight Hacking LCY to HLN

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 LCY to HLN — but Champion Traveler does!

Hack #1: San Francisco, CA (LCY > SFO > HLN)

  • Price for both tickets: $765
  • Average savings: $361 (32.06%)

See LCY to SEA flights

Hack #2: Seattle, WA (LCY > SEA > HLN)

  • Price for both tickets: $846
  • Average savings: $280 (24.87%)

See LCY to SFO flights

Hack #3: San Jose, CA (LCY > SJC > HLN)

  • Price for both tickets: $859
  • Average savings: $268 (23.76%)

See LCY to SJC flights


Flight Questions Answered

Still have questions about flying from LCY to HLN? We’ve got answers.

Which airlines fly this route?

You can find 10 major airlines flying this route most often: Alaska, American, British Airways, Delta, Finnair, Iberia, KLM, Lufthansa, United, Virgin Atlantic, and potentially more during busy seasons.

How far away is it from Helena Regional Airport to London City Airport?

The distance between the two airports is roughly 4553 miles or 7327 kilometers.

How long does it take to fly from LCY to HLN?

The real-world flight time for a nonstop LCY to HLN flight is about 9 hour 11 minutes.

How many flights go between London and Helena, MT?

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


Airport Location Info


Departing Airport

Origination code LCY
Origination airport name London City Airport
City London
Country the United Kingdom
Latitude 51.5
Longitude 0.1

Return Airport

Destination code HLN
Destination airport name Helena Regional Airport
City Helena, MT
Country the United States
Latitude 46.6
Longitude -112


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.