The cheapest times to fly from HLN to TLL are

  • January 1st to April 1st
  • April 16th to May 20th
  • July 2nd to July 15th
  • October 22nd to December 9th (except the week of October 29th)

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 HLN to TLL is mid February. Prices can be as high as $1912 for Saturday flights during mid December, or as low as $616 for Tuesday flights around mid February.


When to Fly to Tallinn

Flying from Helena, MT (HLN) to Tallinn (TLL) will usually cost between $896 to $1626 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 $1010. Due to high demand the most expensive time to fly is mid December, with an average price of $1601. Planning your trip to low-cost times can easily save you $591 on economy flights and even more on first-class flights. Generally, any price below $1326 can be considered a good price for a round-trip HLN to TLL flight.

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

HLN to TLL Flight Prices

Compared to other flights, the HLN to TLL flight is slightly more expensive than the average and costs more than the average flight leaving from Helena. The average price per mile (for a direct flight) is $0.17, which is below average.


Flight Prices by Day of the Week

Tuesday is usually the cheapest day to fly to TLL, and Wednesday the cheapest day to fly back into HLN. 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 $270 (17%) 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 $1122. Return trip prices are from the TLL to HLN 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 HLN to TLL 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 28 minutes may not be realistic.


Flight Hacking HLN to TLL

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 HLN to TLL — but Champion Traveler does!

Hack #1: Frankfurt (HLN > FRA > TLL)

  • Price for both tickets: $1107
  • Average savings: $219 (16.52%)

See HLN to FRA flights

Hack #2: Los Angeles, CA (HLN > LAX > TLL)

  • Price for both tickets: $1111
  • Average savings: $216 (16.25%)

See HLN to LAX flights

Hack #3: Riga (HLN > RIX > TLL)

  • Price for both tickets: $1111
  • Average savings: $215 (16.21%)

See HLN to RIX flights


Flight Questions Answered

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

Which airlines fly this route?

You can find 17 major airlines flying this route most often: Aeroflot, Air Baltic, Air France, American, Austrian, Delta, Finnair, KLM, LOT, Lufthansa, Ryanair, SAS, Singapore Airlines, Smartwings, Turkish Airlines, United, Wizz Air, and potentially more during busy seasons.

How far away is it from Lennart Meri Tallinn Airport to Helena Regional Airport?

The distance between the two airports is roughly 4714 miles or 7586 kilometers.

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

The real-world flight time for a nonstop HLN to TLL flight is about 9 hour 28 minutes.

How many flights go between Helena, MT and Tallinn?

It depends on the day of the week and the date, but a typical day might have around 11 available flights from HLN to TLL.


Airport Location Info


Departing Airport

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

Return Airport

Destination code TLL
Destination airport name Lennart Meri Tallinn Airport
City Tallinn
Country Estonia
Latitude 59.4
Longitude 24.8


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.