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Flights from San Juan to Helena

San Juan to Helena | Find Cheap Flight Deals

We've found these cheap flights for you. You can book one-way or return flight tickets.

  • Round-trip
  • One way

Crossed out prices are calculated based on the average price of the corresponding route on Trip.com.

Flight Information from San Juan to Helena

Cheapest one-way flight price US$430
Off-season travel month January
Peak season for travel January
Flight distance 5,219.07km
Popular airline American Airlines

Find the best time to fly from San Juan to Helena

We monitor flight fares to help you find the best deals effortlessly

Cheapest flights
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  • 8 15
  • 15 22
  • 22 29

  • Jul

    29 6
  • 6 13
  • 13 20
  • 20 27

  • Aug

    27 3
  • 3 10
  • 10 17
  • 17 24
  • 24 31
Displayed prices are calculated based on the cheapest average weekly prices of the corresponding route on Trip.com.

FAQ

  • When are flight tickets from San Juan (SJU) to Helena (HLN) the cheapest?

    Airlines adjust prices for flights from San Juan to Helena based on the date and time of your booking. By analyzing data from all airlines, on Trip.com, you can find the cheapest flight prices on Tuesdays, Wednesdays, and Saturdays.

  • How much are flights from San Juan (SJU) to Helena (HLN) cost?

    According to Trip.com's data, the lowest price is around US$865.

  • How many airports in Helena (HLN)?

    There are 1 airport(s) in Helena (HLN): Helena Regional Airport.

How to find a cheap flight from San Juan to Helena

Wait until the last minute and flight costs are often sky-high. Plan ahead, book the right way, and your savings can soar. We have loads of saving tips to help you find a cheap flight from San Juan to Helena. Book your flights at the right time and save more.
1
Be flexible with your travel dates to get the cheapest flight from San Juan to Helena.
Simply tap "Date" on the flight search bar to browse through the calendar and check out airfare from San Juan to Helena over the next 6 months in 2025. If you're planning to fly within the next three months, it looks like the most affordable option is on Sat, Jun 14, with one-way flights priced at just US$431.
2
Compare cheap flight deals from San Juan to Helena across hundreds of airlines.
With our extensive search, you can compare prices from over 500 airlines to find the cheapest flight tickets from San Juan to Helena. The cheapest airline for this route is United Airlines.
3
Set up a Price Alert
By setting up a Price Alert for your journey from San Juan to Helena, you can easily keep an eye on ticket prices without having to check every day.
4
Don't miss out on cheap flight deals and promo codes from San Juan to Helena.
You can always find the latest offers through Trip.com Deals and Promo Codes for cheap flights. By signing up for a free membership, you'll get access to even more deals for your flights.
5
Book early or wait until the last minute.
It's usually best to book early. Flight tickets are often cheapest when they're first released, typically about a year before the departure date. So, have a look online as soon as the flights you're interested in become available. If you miss the cheapest time, you might still find some good deals as the departure date gets closer.
6
Search for flights on the go.
For the best travel flight booking experience, download the Trip.com app. You can search for cheap flights from San Juan to Helena and snag some exclusive deals just for you.

More Travel Options

  • Top Routes from San Juan
  • Top Routes to Helena
  • Popular Airlines