$99 Cheap Flights from Seattle (SEA) to Helena (HLN)

View $99 flight on Tue, Feb 10, 2026Opens in a new window

Popular airlines from Seattle-Tacoma International Airport (SEA) to Helena, MT (HLN-Helena Regional)

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Today's featured flight deals from Seattle-Tacoma International Airport (SEA) to Helena, MT (HLN-Helena Regional)

Nonstop
Carry-on included
Lower price than typical

Cheap Flights from Seattle to Helena (SEA-HLN)

Prices were available within the past 7 days and start at $99 for one-way flights and $117 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Alaska Airlines
Tue, Dec 9 - Tue, Dec 16
SEA
Seattle
HLN
Helena
$117 Roundtrip, found 5 days ago
$117
Roundtrip
found 5 days ago
Select Alaska Airlines flight, departing Tue, Dec 9 from Seattle to Helena, returning Tue, Dec 16, priced at $117 found 5 days ago
Delta
Wed, Dec 3 - Sat, Dec 13
SEA
Seattle
HLN
Helena
$137 Roundtrip, found 5 days ago
$137
Roundtrip
found 5 days ago
Select Delta flight, departing Wed, Dec 3 from Seattle to Helena, returning Sat, Dec 13, priced at $137 found 5 days ago
Delta
Tue, Dec 9 - Sun, Dec 14
SEA
Seattle
HLN
Helena
$147 Roundtrip, found 5 days ago
$147
Roundtrip
found 5 days ago
Select Delta flight, departing Tue, Dec 9 from Seattle to Helena, returning Sun, Dec 14, priced at $147 found 5 days ago
Hawaiian Airlines
Tue, Dec 9 - Wed, Dec 10
SEA
Seattle
HLN
Helena
$157 Roundtrip, found 5 days ago
$157
Roundtrip
found 5 days ago
Select Hawaiian Airlines flight, departing Tue, Dec 9 from Seattle to Helena, returning Wed, Dec 10, priced at $157 found 5 days ago
Delta
Sat, Jan 10 - Sat, Jan 24
SEA
Seattle
HLN
Helena
$167 Roundtrip, found 1 day ago
$167
Roundtrip
found 1 day ago
Select Delta flight, departing Sat, Jan 10 from Seattle to Helena, returning Sat, Jan 24, priced at $167 found 1 day ago
Delta
Tue, Dec 9 - Wed, Dec 10
SEA
Seattle
HLN
Helena
$170 Roundtrip, found 5 days ago
$170
Roundtrip
found 5 days ago
Select Delta flight, departing Tue, Dec 9 from Seattle to Helena, returning Wed, Dec 10, priced at $170 found 5 days ago
Delta
Tue, Dec 9 - Wed, Dec 10
SEA
Seattle
HLN
Helena
$177 Roundtrip, found 5 days ago
$177
Roundtrip
found 5 days ago
Select Delta flight, departing Tue, Dec 9 from Seattle to Helena, returning Wed, Dec 10, priced at $177 found 5 days ago
Alaska Airlines
Thu, Jan 8 - Sat, Jan 17
SEA
Seattle
HLN
Helena
$177 Roundtrip, found 11 hours ago
$177
Roundtrip
found 11 hours ago
Select Alaska Airlines flight, departing Thu, Jan 8 from Seattle to Helena, returning Sat, Jan 17, priced at $177 found 11 hours ago
Alaska Airlines
Sat, Mar 7 - Tue, Mar 10
SEA
Seattle
HLN
Helena
$187 Roundtrip, found 6 days ago
$187
Roundtrip
found 6 days ago
Select Alaska Airlines flight, departing Sat, Mar 7 from Seattle to Helena, returning Tue, Mar 10, priced at $187 found 6 days ago
United
Tue, Dec 9 - Wed, Dec 10
SEA
Seattle
HLN
Helena
$221 Roundtrip, found 5 days ago
$221
Roundtrip
found 5 days ago
Select United flight, departing Tue, Dec 9 from Seattle to Helena, returning Wed, Dec 10, priced at $221 found 5 days ago

Find the cheapest month to fly from Seattle (SEA) to Helena (HLN)

January is typically the cheapest month to fly

From $136 - $438 per traveler.

Alternative airports near Helena

Prices were available within the past 7 days. Prices and availability are subject to change.

Select flight to Helena Regional HLN. Cheapest and Closest option available. Average driving time to city center is 7 minutes. Flights from $262
HLN
Helena Regional
CheapestClosest
Average driving time to city center7 min
Flights from $262

Frequently asked questions

How much does a flight from Seattle - Tacoma Intl. Airport (SEA) to Helena Regional Airport (HLN) cost?
Secure a cheap one-way flight from $99 or cheap return flight from $117 from Seattle - Tacoma Intl. Airport (SEA) to Helena Regional Airport (HLN) 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 Seattle - Tacoma Intl. Airport (SEA) to Helena Regional Airport (HLN)?
The cheapest month to fly from SEA to HLN is December, when there's less demand. Off-peak season is usually when you'll find lower airfares between these airports.
Which airlines fly direct from Seattle - Tacoma Intl. Airport (SEA) to Helena Regional Airport (HLN)?
If you're departing from Seattle - Tacoma Intl. Airport (SEA), you can board a direct flight to Helena Regional Airport (HLN) with Alaska Airlines.
What is the cheapest airline that flies from Seattle - Tacoma Intl. Airport (SEA) to Helena Regional Airport (HLN)?
Expedia's filter tool lets you easily compare airlines, flight times and fares all in one place. Tailor the search to your trip, then sort by "Price (lowest to highest)" to see which carrier offers the cheapest SEA to HLN flight.
How many flights per day from Seattle - Tacoma Intl. Airport (SEA) to Helena Regional Airport (HLN)?
On average, just 1 nonstop flight departs daily from Seattle - Tacoma Intl. Airport (SEA) to Helena Regional Airport (HLN). Want additional options? Use Expedia's filter tool to discover flights with layovers and add an extra destination to your journey.
What are the most popular departure times for flights from Seattle - Tacoma Intl. Airport (SEA) to Helena Regional Airport (HLN)?
The 1 PM departures from SEA to HLN are the most sought after. They can also be more expensive. If you're hoping to save money, pick a less crowded time to fly.
What day of the week has the most flights from SEA to HLN?
Friday has the most flights from Seattle - Tacoma Intl. Airport (SEA) to Helena Regional Airport (HLN). Consider traveling on this day and you'll have the best chance of finding a schedule that works for you.
What is the earliest flight from Seattle - Tacoma Intl. Airport (SEA) to Helena Regional Airport (HLN)?
The earliest flight jetting off from Seattle - Tacoma Intl. Airport (SEA) is at around 1:29PM UTC-8. Hop on this flight and you'll land at Helena Regional Airport (HLN) at approximately 4:04PM UTC-7. The total time in the air is 1h 35m.
How long does it take to fly from Seattle - Tacoma Intl. Airport (SEA) to Helena Regional Airport (HLN)?
The average flight time from SEA to HLN is 1 hour and 35 minutes, covering a total distance of 490 mi.
What airline has the least delays from SEA to HLN?
Consider traveling with American Airlines if you'd like to fly straight from Seattle - Tacoma Intl. Airport (SEA) to Helena Regional Airport (HLN) without any holdups. This carrier has the strongest track record for punctuality, with an on-time performance of 85%. Want real-time updates? You can check your flight status using the Expedia App.
What is the best time to fly from Seattle - Tacoma Intl. Airport (SEA) to Helena Regional Airport (HLN)?
Book a flight from Seattle - Tacoma Intl. Airport (SEA) to Helena Regional Airport (HLN) that takes off before 3 PM to reduce the risk of delays and cancellations. Later departures are on average 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.
What airports do you fly into for Helena from Seattle - Tacoma Intl. Airport (SEA)?
If you're taking a direct flight from Seattle - Tacoma Intl. Airport (SEA) to Helena, Helena Regional Airport (HLN) is the only airport you can touch down at.
Is it cheaper to buy a plane ticket from Seattle - Tacoma Intl. Airport (SEA) to Helena Regional Airport (HLN) last-minute?
Last-minute fares from SEA to HLN are generally more expensive. To lock in the lowest rates, start searching for flights as soon as possible. That said, if you're flexible with your travel dates, it's possible to score a cheap ticket right before your journey.
Is it cheaper to book a SEA to HLN flight and hotel package?
You can save money by booking a SEA to HLN flight and hotel package compared to booking separately. In fact, travelers could save hundreds of dollars by bundling with Expedia. And it's easy to manage everything in one place. Once you've selected your preferred flights and accommodations, you can add extras such as tours, car rentals and activities.
Can I cancel or change the date of my flight from Seattle - Tacoma Intl. Airport (SEA) to Helena Regional Airport (HLN)?
If you booked your SEA to HLN flight in the last 24 hours, you may be able to modify or cancel it without any fees. Depending on the airline and the type of ticket you purchased, additional charges may apply for changes beyond this timeframe. Airline policies and contact information can be found in your itinerary or confirmation email. Or, visit our Customer Service portal for more details.

Travel information

Origin airport
Seattle - Tacoma Intl.
Destination airport
Helena Regional
Airlines serving
Alaska Airlines, Delta, Hawaiian Airlines, United
Roundtrip price
$117
Distance
488 mi
Average flight time
1 hour 36 mins

Book with confidence

Seattle to Helena Flights

The cheapest times to fly from Seattle 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 Seattle to Helena are during the month of December. You can find some of the cheapest flights from Seattle to Helena with Expedia's search tool and vast selection of airlines.

 

The best time to book a flight from Seattle to Helena

Sunday is one of the best days to book for cheap flights from Seattle 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 Seattle 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 Seattle to Helena in 2025. You can also book with separate airlines for your outbound and return journeys, from $99 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 Seattle 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 Seattle 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.

 

Seattle to Helena Flights

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*Available to One Key members.