In terms of precipitation, rainfall in Helena ranges from 0.3 - 2.1 inches per month. June is typically the wettest month, when rainfall can reach 2.1 in. February is typically the driest time to visit Helena when rainfall is around 0.3 in.

If weather is an important factor for your trip to Helena, use this chart to help with planning. For those seeking warmer temperatures, July is the ideal time of year to visit, when temperatures reach an average of 69.8 F. Travelers looking to avoid the cold should look outside of December, when temperatures are typically at their lowest (around 21.2 F).

What is the cheapest month to fly from New Windsor to Helena?

November can be a great time to fly to Helena from New Windsor with a flight ticket averaging about $747. Cheapflights users have found deals in the month of November for as cheap as $407. The most expensive prices can be found in the month of October.

What is the cheapest time of day to fly from SWF to HLN?

When flying from New Windsor to Helena, the time of day you decide to fly out makes little to no difference towards the overall price you’ll pay on tickets.

Can I find deals for flights from Stewart to Helena that include hotel bookings?

Yes. In addition to deals on Stewart to Helena flights, Cheapflights offers vacation packages that include both flights and hotel.

How can I find direct flights from Stewart to Helena?

After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Stewart to Helena.

Can I find deals for business class flights from Stewart to Helena?

Yes. Cheapflights offers flight deals from Stewart to Helena by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

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Cheap flight deals from Stewart to Helena

Popular in	October
Cheapest in	November
Average price	$833

Highest demand for flights based on searches. 4% potential increase in price ($31 potential increase over avg. RT price).

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Cheapest flight prices on average. 6% potential price decrease ($46 potential savings vs. average RT price).

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Average for round-trip flights in July 2025

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Best time to book a flight from Stewart to Helena

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Estimated round-trip price

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Everything you need to know about your flight from New Windsor to Helena

What is the cheapest month to book a flight from New Windsor to Helena?

Currently, February is the cheapest month in which you can book a flight from New Windsor to Helena (average of $353). Flying from New Windsor to Helena in May is currently the most expensive (average of $517). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

Related info for your journey

Can I find deals for flights from Stewart to Helena that include hotel bookings?
Yes. In addition to deals on Stewart to Helena flights, Cheapflights offers vacation packages that include both flights and hotel.
How can I find direct flights from Stewart to Helena?
After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Stewart to Helena.
Can I find deals for business class flights from Stewart to Helena?
Yes. Cheapflights offers flight deals from Stewart to Helena by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.
What is the cheapest month to book a flight from New Windsor to Helena?
Currently, February is the cheapest month in which you can book a flight from New Windsor to Helena (average of $353). Flying from New Windsor to Helena in May is currently the most expensive (average of $517). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

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Find cheap flights from Stewart to Helena with Cheapflights

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2. Select your favorite providers

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Cheap flight deals from Stewart to Helena

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Best time to book a flight from Stewart to Helena

Have a flexible travel schedule? Discover the best time to fly to Helena from Stewart with our price prediction graph.

Cheapflights Insights

Everything you need to know about your flight from New Windsor to Helena

What is the cheapest month to book a flight from New Windsor to Helena?

Related info for your journey

Find useful and relevant information for your journey from Stewart to Helena. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

Can I find deals for flights from Stewart to Helena that include hotel bookings?

How can I find direct flights from Stewart to Helena?

Can I find deals for business class flights from Stewart to Helena?

What is the cheapest month to book a flight from New Windsor to Helena?

Browse thousands of different options on Cheapflights for your next trip

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Complete your trip to Helena by adding a car rental and/or hotel reservation to your travel itinerary.

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Other flights to Helena

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Cheap flights from New Windsor to Helena (SWF - HLN)

Find cheap flights from Stewart to Helena with Cheapflights

1. Tell us where you want to go

2. Select your favorite providers

3. Compare prices and book

Cheap flight deals from Stewart to Helena

Popular in

Cheapest in

Average price

Best time to book a flight from Stewart to Helena

Have a flexible travel schedule? Discover the best time to fly to Helena from Stewart with our price prediction graph.

Cheapflights Insights

Everything you need to know about your flight from New Windsor to Helena

What is the cheapest month to book a flight from New Windsor to Helena?

Related info for your journey

Find useful and relevant information for your journey from Stewart to Helena. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

Can I find deals for flights from Stewart to Helena that include hotel bookings?

How can I find direct flights from Stewart to Helena?

Can I find deals for business class flights from Stewart to Helena?

What is the cheapest month to book a flight from New Windsor to Helena?

Browse thousands of different options on Cheapflights for your next trip

Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.

Alternative routes for Stewart to Helena

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

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Travel Smart