Cheap Flights from San Sebastian (EAS) to Helena (HLN)

Popular airlines from San Sebastian (EAS) to Helena, MT (HLN-Helena Regional)

Frequently asked questions

How much does a flight from San Sebastian Airport (EAS) to Helena Regional Airport (HLN) cost?
Get a cheap one-way flight or cheap return flight from San Sebastian Airport (EAS) to Helena Regional Airport (HLN) with Expedia. Enter your travel dates and sort by "Price (lowest to highest)" to find our cheapest flight deals on this route.
What is the cheapest month to fly from San Sebastian Airport (EAS) to Helena Regional Airport (HLN)?
Planning your getaway for can help you save, as it's the cheapest month for flights between EAS and HLN. You'll usually find the lowest fares during off-peak months.
What is the cheapest airline that flies from San Sebastian Airport (EAS) to Helena Regional Airport (HLN)?
Use the filter tool on Expedia to compare different airlines and find the most affordable carrier that'll fly you from EAS to HLN. Then, sort your results by "Price (lowest to highest)" to score a good deal.
How many flights per day from San Sebastian Airport (EAS) to Helena Regional Airport (HLN)?
Nonstop flights from San Sebastian Airport (EAS) to Helena Regional Airport (HLN) aren't available daily, so you'll need to take a flight with a layover. Explore your options with Expedia's filters. Enter your dates and pick either "1 Stop" or "2+ Stops."
What day of the week has the most flights from EAS to HLN?
Typically you'll find the largest variety of flight choices on a Friday. Tuesdays are often the quietest.* But this can change based on the airline, time of year and other factors.*Busiest/quietest day to travel is based on Expedia flight demand through January to December 2024.
What is the best time to fly from San Sebastian Airport (EAS) to Helena Regional Airport (HLN)?
To arrive at Helena Regional Airport (HLN) without delays, book a flight that leaves San Sebastian Airport (EAS) before 3 PM. The chance of cancellations is 22% higher, on average, for departures after this hour.**Most reliable time of the day and month to travel recommendation is based on January through August 2024 flight status data sourced from OAG's global flight data platform.
Is it cheaper to buy a plane ticket from San Sebastian Airport (EAS) to Helena Regional Airport (HLN) last-minute?
Last-minute fares from EAS to HLN are generally more expensive. To lock in the best prices, start searching for flights early. That being said, if you can play around with your travel dates, it's possible to score a cheap ticket right before your trip.
Is it cheaper to book an EAS to HLN flight and hotel package?
Compared with arranging hotels and flights separately, booking an EAS to HLN flight and hotel package with Expedia could lead to significant savings. What's more, having everything in one place takes the hassle out of travel planning. Simply secure your flights and choose from our wide range of hotels, then tailor your trip with extras like tours, activities and car rentals.
Can I cancel or change the date of my flight from San Sebastian Airport (EAS) to Helena Regional Airport (HLN)?
Usually, it's possible to cancel or reschedule your EAS to HLN flight. However, if it's been more than 24 hours since booking, additional fees may apply. Check your airline's policies in your itinerary to see what changes are allowed and whether any costs are involved. You'll also find more information on our Customer Service portal.

Travel information

Origin airport
San Sebastian
Destination airport
Helena Regional
Distance
4901 mi

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San Sebastian to Helena Flights

The cheapest times to fly from San Sebastian to Helena

On average, Thursday can be the cheapest time to fly, according to data from the Airlines Reporting Corporation (ARC), one of the world's biggest databases for global airline sales. The data reveals that you could save up to 16% by flying on a Thursday—the cheapest day to travel on average—instead of a Sunday—the most expensive. Some of the most affordable flights from San Sebastian to Helena are during the month of . You can find some of the cheapest flights from San Sebastian to Helena with Expedia's search tool and vast selection of airlines.

 

The best time to book a flight from San Sebastian to Helena

Sunday is one of the best days to book for cheap flights from San Sebastian to Helena: Tickets reserved on a Sunday cost between 6% and 13% less than those reserved on a Friday, according to ARC data. The data also suggests booking early can also lead to cheaper airfares. You could save 24% by buying your tickets for domestic flights at least a month in advance and 10% by booking international flights 2 months in advance.

 

How to find cheap round-trip tickets from San Sebastian to Helena

Being flexible with your dates and using Expedia's Price Drop Protection and Price Tracking features are some of the best ways of finding a cheap ticket from San Sebastian to Helena in 2025. You can also book with separate airlines for your outbound and return journeys, from one-way. Expedia also offers Price Drop Protection, so if the cost of your airfare goes down after booking, you'll receive a credit for the difference*. This is available for a small fee, and is free to One Key Gold and Platinum tier members.

 

Expedia's Price Tracking feature means you can stay on top of airfares without manually checking every day. It sends you automated price alerts for cheap San Sebastian to Helena flights and uses historical data to indicate when the best time to book is. Download Expedia's free app to activate this handy tool in a few easy taps.

 

You could also save big by booking one of Expedia's vacation packages. Bundling together your San Sebastian to Helena airfare with your accommodations and car rental is often cheaper than booking everything separately. There’s also One Key, Expedia's generous rewards program. Join for free and you could earn One Key cash on most bookings to save on future adventures.

 

*Terms apply.

 

Disclaimer: ARC The statistics are based on average round-trip ticket prices between January and August 2023. The percentages you see are averages.

 

San Sebastian to Helena Flights

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*Available to One Key members.