$145 Cheap Flights from Helena (HLN) to Phoenix (PHX)

View $145 flight on Tue, Nov 18, 2025Opens in a new window

Popular airlines from Helena, MT (HLN-Helena Regional) to Phoenix Sky Harbor Intl. Airport (PHX)

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Cheap Flights from Helena to Phoenix (HLN-PHX)

Prices were available within the past 7 days and start at $145 for one-way flights and $250 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Hawaiian Airlines
Tue, Oct 21 - Tue, Nov 4
HLN
Helena
PHX
Phoenix
$250 Roundtrip, found 4 days ago
$250
Roundtrip
found 4 days ago
Select Hawaiian Airlines flight, departing Tue, Oct 21 from Helena to Phoenix, returning Tue, Nov 4, priced at $250 found 4 days ago
Hawaiian Airlines
Tue, Oct 7 - Tue, Oct 21
HLN
Helena
PHX
Phoenix
$252 Roundtrip, found 4 days ago
$252
Roundtrip
found 4 days ago
Select Hawaiian Airlines flight, departing Tue, Oct 7 from Helena to Phoenix, returning Tue, Oct 21, priced at $252 found 4 days ago
Delta
Wed, Oct 22 - Tue, Nov 4
HLN
Helena
PHX
Phoenix
$262 Roundtrip, found 4 days ago
$262
Roundtrip
found 4 days ago
Select Delta flight, departing Wed, Oct 22 from Helena to Phoenix, returning Tue, Nov 4, priced at $262 found 4 days ago
Hawaiian Airlines
Tue, Oct 21 - Sat, Nov 1
HLN
Helena
PHX
Phoenix
$272 Roundtrip, found 4 days ago
$272
Roundtrip
found 4 days ago
Select Hawaiian Airlines flight, departing Tue, Oct 21 from Helena to Phoenix, returning Sat, Nov 1, priced at $272 found 4 days ago
Hawaiian Airlines
Sat, Oct 18 - Wed, Oct 29
HLN
Helena
PHX
Phoenix
$280 Roundtrip, found 3 days ago
$280
Roundtrip
found 3 days ago
Select Hawaiian Airlines flight, departing Sat, Oct 18 from Helena to Phoenix, returning Wed, Oct 29, priced at $280 found 3 days ago
Hawaiian Airlines
Mon, Oct 13 - Wed, Oct 29
HLN
Helena
PHX
Phoenix
$280 Roundtrip, found 3 days ago
$280
Roundtrip
found 3 days ago
Select Hawaiian Airlines flight, departing Mon, Oct 13 from Helena to Phoenix, returning Wed, Oct 29, priced at $280 found 3 days ago
Delta
Wed, Oct 22 - Wed, Nov 5
HLN
Helena
PHX
Phoenix
$282 Roundtrip, found 4 days ago
$282
Roundtrip
found 4 days ago
Select Delta flight, departing Wed, Oct 22 from Helena to Phoenix, returning Wed, Nov 5, priced at $282 found 4 days ago
Hawaiian Airlines
Sat, Oct 4 - Tue, Oct 7
HLN
Helena
PHX
Phoenix
$286 Roundtrip, found 6 days ago
$286
Roundtrip
found 6 days ago
Select Hawaiian Airlines flight, departing Sat, Oct 4 from Helena to Phoenix, returning Tue, Oct 7, priced at $286 found 6 days ago
Alaska Airlines
Wed, Dec 31 - Wed, Jan 14
HLN
Helena
PHX
Phoenix
$319 Roundtrip, found 6 days ago
$319
Roundtrip
found 6 days ago
Select Alaska Airlines flight, departing Wed, Dec 31 from Helena to Phoenix, returning Wed, Jan 14, priced at $319 found 6 days ago
United
Tue, Dec 16 - Sun, Dec 21
HLN
Helena
PHX
Phoenix
$369 Roundtrip, found 14 hours ago
$369
Roundtrip
found 14 hours ago
Select United flight, departing Tue, Dec 16 from Helena to Phoenix, returning Sun, Dec 21, priced at $369 found 14 hours ago

Find the cheapest month to fly from Helena (HLN) to Phoenix (PHX)

January is typically the cheapest month to fly

From $247 - $591 per traveler.

Frequently asked questions

How much does a flight from Helena Regional Airport (HLN) to Sky Harbor Intl. Airport (PHX) cost?
Grab a cheap one-way flight from $145 or cheap return flight from $250 from Helena Regional Airport (HLN) to Sky Harbor Intl. Airport (PHX) with Expedia. Enter your travel dates and sort by "Price (lowest to highest)" to see our cheapest flight offers on this route.
What is the cheapest month to fly from Helena Regional Airport (HLN) to Sky Harbor Intl. Airport (PHX)?
October is the least expensive month to fly from HLN to PHX. Planning your trip for the off-season is often the key to landing a great deal.
What is the cheapest airline that flies from Helena Regional Airport (HLN) to Sky Harbor Intl. Airport (PHX)?
Expedia's filter tool lets you easily compare different airlines, departure times and fares all in one place. Select your preferences, then sort by "Price (lowest to highest)" to find the carrier with the cheapest HLN to PHX flight.
How many flights per day from Helena Regional Airport (HLN) to Sky Harbor Intl. Airport (PHX)?
Nonstop flights from Helena Regional Airport (HLN) to Sky Harbor Intl. Airport (PHX) aren't available daily, so you'll have to take a flight with a layover. Explore your options with Expedia's filters. Enter your travel details and pick either "1 Stop" or "2+ Stops."
What day of the week has the most flights from HLN to PHX?
You'll usually find Tuesday the quietest day for flights, while Fridays tend to be the busiest.* However this can vary from season to season and during public holidays or peak travel times.*Busiest/quietest day to travel is based on Expedia flight demand through January to December 2024.
What is the best time to fly from Helena Regional Airport (HLN) to Sky Harbor Intl. Airport (PHX)?
To avoid possible delays on the Helena Regional Airport (HLN) to Sky Harbor Intl. Airport (PHX) route, fly before 3 PM. Departures after this time are 22% more likely to be canceled.**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 Helena Regional Airport (HLN) to Sky Harbor Intl. Airport (PHX) last-minute?
Booking your flight from HLN to PHX shortly before your journey is generally more expensive. However, if there's some wiggle room with your travel times and dates, you could land a cheap last-minute fare.
Is it cheaper to book a HLN to PHX flight and hotel package?
Compared with arranging hotels and flights separately, booking a HLN to PHX flight and hotel package with Expedia could lead to significant savings. Better still, having everything in one convenient place will take the hassle out of planning your trip. Just secure your flights and select from our extensive range of stays, then customize your trip with extras like tours and car rentals.
Can I cancel or change the date of my flight from Helena Regional Airport (HLN) to Sky Harbor Intl. Airport (PHX)?
In most instances, you can cancel or reschedule your HLN to PHX flight. However, additional charges may apply, especially if your booking was made more than 24 hours ago. Check your itinerary for the airline's fees and policies on flight changes, or if you want more details, go to our Customer Service portal.

Travel information

Travel information

Origin airport
Helena Regional
Destination airport
Sky Harbor Intl.
Airlines serving
Alaska Airlines, Delta, Hawaiian Airlines, United
Roundtrip price
$250
Distance
910 mi

Book with confidence

Book with confidence

Helena to Phoenix Flights

The cheapest times to fly from Helena to Phoenix

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 Helena to Phoenix are during the month of October. You can find some of the cheapest flights from Helena to Phoenix with Expedia's search tool and vast selection of airlines.

 

The best time to book a flight from Helena to Phoenix

Sunday is one of the best days to book for cheap flights from Helena to Phoenix: 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 Helena to Phoenix

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 Helena to Phoenix in 2025. You can also book with separate airlines for your outbound and return journeys, from $145 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 Helena to Phoenix 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 Helena to Phoenix 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.

 

Helena to Phoenix Flights

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*Available to One Key members.