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Helena

$149+ Cheap flights from Seattle to Helena (SEA - HLN)

This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 12/18. Fares are subject to change and may not be available on all flights or dates of travel.
SEA — HLN
Dec 17 — Dec 241
Wed 12/17
Wed 12/24
1 adult, Economy
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Find flight deals from Seattle to Helena

Cheapest flights from Seattle to Helena
Explore the most affordable flight options available from Seattle to Helena. Find the lowest fares from popular airlines and budget airlines, with prices last updated on November 17, 2025.

This United Airlines deal was found by Cheapflights users on 11/14. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 12/55:00 amSEA - HLN
1 stop7h 47mUnited Airlines
Sun 12/72:30 pmHLN - SEA
1 stop8h 16mUnited Airlines
Deal found 11/14$277
This Delta deal was found by Cheapflights users on 11/16. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 12/45:00 pmSEA - HLN
1 stop4h 30mDelta
Sat 12/61:06 pmHLN - SEA
1 stop4h 48mDelta
Deal found 11/16$288
This KAYAK deal was found by Cheapflights users on 11/16. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure KAYAK is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 12/53:13 pmSEA - HLN
Nonstop1h 38mAlaska Airlines
Sun 12/76:28 pmHLN - SEA
Nonstop1h 52mAlaska Airlines
Deal found 11/16$296
This Alaska Airlines deal was found by Cheapflights users on 11/16. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 12/43:13 pmSEA - HLN
Nonstop1h 38mAlaska Airlines
Sat 12/66:28 pmHLN - SEA
Nonstop1h 52mAlaska Airlines
Deal found 11/16$298
This Alaska Airlines deal was found by Cheapflights users on 11/15. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 12/43:13 pmSEA - HLN
Nonstop1h 38mAlaska Airlines
Sun 12/76:28 pmHLN - SEA
Nonstop1h 52mAlaska Airlines
Deal found 11/15$308
This Delta deal was found by Cheapflights users on 11/16. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 12/55:25 amSEA - HLN
1 stop6h 00mDelta
Sun 12/75:30 amHLN - SEA
1 stop4h 55mDelta
Deal found 11/16$318
This Alaska Airlines deal was found by Cheapflights users on 11/15. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 11/294:07 pmSEA - HLN
Nonstop1h 45mAlaska Airlines
Wed 12/36:28 pmHLN - SEA
Nonstop1h 52mAlaska Airlines
Deal found 11/15$338
This United Airlines deal was found by Cheapflights users on 11/15. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 12/45:00 amSEA - HLN
1 stop7h 47mUnited Airlines
Sat 12/62:30 pmHLN - SEA
2 stops9h 45mUnited Airlines
Deal found 11/15$353
This Delta deal was found by Cheapflights users on 11/15. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 12/155:25 amSEA - HLN
1 stop6h 00mDelta
Mon 12/221:11 pmHLN - SEA
1 stop6h 20mDelta
Deal found 11/15$428

Cheap flight deals from Seattle to Helena

Discover tips and strategies to find the most affordable flight options for your journey from Seattle (SEA) to Helena (HLN). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated November 17, 2025.

Most accurate provider

CheapOair
3 stars

Most trusted provider

CheapOair
3 stars

Round-trip from

$197
(Alaska Airlines)

One-way from

$149
(Expedia)

Popular in

December

Cheapest in

November

Average price

$197

Good round-trip deal

$157 or less
Provider with most accurate pricing for Seattle/Tacoma Intl-Helena flight deals.
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Provider most trusted by Cheapflights users for Seattle/Tacoma Intl-Helena flights.
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From Seattle/Tacoma Intl to Helena
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One-way flight from Seattle/Tacoma Intl to Helena
Search Deals
Highest demand for flights based on searches. 4% potential increase in price ($15 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 7% potential price decrease ($22 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in November 2025
Search Deals
Price to beat on a round-trip flight from Seattle/Tacoma Intl to Helena.
Search Deals

Cheapflights Fare Finder

 
Customize your flight search to find flights from Seattle to Helena that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated November 17, 2025.
Use the filters below to find and compare flights from Seattle to Helena that are best for you.

Fly from

Seattle

Fly to

Helena

Route

Depart

Return

Price

SeattleHelena

SEA - HLN

SEAHLN

Seattle/Tacoma Intl

Sat 4/25

1:05 pm-3:38 pm

Nonstop1h 33m

Helena

Wed 4/29

4:10 pm-4:51 pm

Nonstop1h 41m

$258

SeattleHelena

SEA - HLN

SEAHLN

Seattle/Tacoma Intl

Fri 12/5

5:00 am-1:47 pm

1 stop7h 47m

Helena

Sun 12/7

2:30 pm-9:46 pm

1 stop8h 16m

$277

SeattleHelena

SEA - HLN

SEAHLN

Seattle/Tacoma Intl

Sat 4/25

5:45 am-12:23 pm

1 stop5h 38m

Helena

Wed 4/29

12:50 pm-4:52 pm

1 stop5h 02m

$278

SeattleHelena

SEA - HLN

SEAHLN

Seattle/Tacoma Intl

Fri 1/23

4:55 pm-10:29 pm

1 stop4h 34m

Helena

Sun 1/25

5:30 am-9:17 am

1 stop4h 47m

$278

SeattleHelena

SEA - HLN

SEAHLN

Seattle/Tacoma Intl

Thu 12/4

5:00 pm-10:30 pm

1 stop4h 30m

Helena

Sat 12/6

1:06 pm-4:54 pm

1 stop4h 48m

$288

SeattleHelena

SEA - HLN

SEAHLN

Seattle/Tacoma Intl

Thu 12/18

3:17 pm-5:55 pm

Nonstop1h 38m

$149

SeattleHelena

SEA - HLN

SEAHLN

Seattle/Tacoma Intl

Thu 12/4

3:13 pm-5:51 pm

Nonstop1h 38m

$189

SeattleHelena

SEA - HLN

SEAHLN

Seattle/Tacoma Intl

Wed 12/3

3:13 pm-5:51 pm

Nonstop1h 38m

$189

SeattleHelena

SEA - HLN

SEAHLN

Seattle/Tacoma Intl

Mon 12/1

4:07 pm-6:52 pm

Nonstop1h 45m

$189

SeattleHelena

SEA - HLN

SEAHLN

Seattle/Tacoma Intl

Thu 12/4

5:25 am-12:25 pm

1 stop6h 00m

$199

Flights are sorted by cheapest round-trip flights first.

Deals found on 11/16

Showing 1-10 of 16 results
1
2

Compare providers for flights from Seattle to Helena

Provider information is updated monthly. Please note that these providers often have deals for this flight, but the availability may vary on a day-by-day basis on Cheapflights.
Use the table below to compare price accuracy, trust ratings, and cancellation policies for each provider offering flight deals from Seattle to Helena in November.
ProviderPrice AccuracyTrust Score*
ExpediaPrice Accuracy2 starsTrust Score*3 stars
FlightHubPrice Accuracy3 starsTrust Score*1 star
eDreamsPrice Accuracy3 starsTrust Score*3 stars
CheapOairPrice Accuracy3 starsTrust Score*3 stars

*The Trust Score is based on feedback from users after their booking experience. It measures overall satisfaction, helping us identify issues like hidden fees, problems during the ticketing process, and the quality of customer service. This score is our best indicator of the provider's quality and reliability.

  • Most accurate provider: When it comes to deals on Seattle-Helena flights, users find the pricing of CheapOair to be most consistent on Cheapflights vs. CheapOair Users can find the same prices on Seattle-Helena flight deals on Cheapflights vs. CheapOair >95% of the time. Price accuracy is based on data collected from Seattle-Helena flight searches over the past month and is updated monthly.
  • Most trusted provider: When it comes to deals on Seattle-Helena flights, Cheapflights users trust CheapOair the most. CheapOair has received a user feedback score of 3 out of 3 stars (3 being the best), meaning they have been trusted the most by Cheapflights users looking for Seattle-Helena flight deals. Provider user feedback score is based on Cheapflights searches over the past month and is updated monthly.

Best time to book a flight from Seattle to Helena

Have a flexible travel schedule? Discover the best time to fly to Helena from Seattle with our price prediction graph.
Estimated round-trip price
Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.

Cheapflights Insights

Everything you need to know about your flight from Seattle to Helena

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

Currently, November is the cheapest month in which you can book a flight from Seattle to Helena (average of $107). Flying from Seattle to Helena in March is currently the most expensive (average of $167). 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.

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

Find hourly flight availability from Seattle to Helena. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated November 17, 2025.

It’s optimal to fly from Seattle to Helena in the afternoon. By choosing this option you can save up to 36% on the cost of your flight, compared to a flight in the morning.

Reviews of airlines servicing Helena

Get insights into the airlines that provide service to Helena. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to Helena. Reviews last updated November 17, 2025.
See what other customers who have flown with Alaska Airlines from Seattle to Helena have to say. You can also see how each airline compares in terms of entertainment options, comfort, food, crew/service, and boarding process.
Alaska Airlines
8.0
Very good
11,314 reviews

Food

7.1

Boarding

8.1

Crew

8.5

Comfort

7.8

Overall

8.0

Entertainment

7.0

Reviews

1 / 20
8.0
Excellent

Anonymous,Sep 2025

SEA - MKE

The crew were excellent, flight good, but the actual space for a person to occupy for 4 hours seems to get smaller and smaller 🤣. I am not overweight, and average height….very uncomfortable,, especially when I couldn’t recliner the seat at all, and the pocket in front doesn’t accommodate a water bottle.
Alaska Airlines
8.0
Very good
11,314 reviews
Alaska Airlines
8.0
Very good
11,314 reviews

Food

7.1

Boarding

8.1

Crew

8.5

Comfort

7.8

Overall

8.0

Entertainment

7.0

Reviews

1 / 20
8.0
Excellent

Anonymous,Sep 2025

SEA - MKE

The crew were excellent, flight good, but the actual space for a person to occupy for 4 hours seems to get smaller and smaller 🤣. I am not overweight, and average height….very uncomfortable,, especially when I couldn’t recliner the seat at all, and the pocket in front doesn’t accommodate a water bottle.

Related info for your journey

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

  • What airports do I use to fly from Seattle to Helena?

    Booking a flight from Seattle/Tacoma Intl (SEA) to Helena (HLN) is your only option if you wish to fly from Seattle to Helena. On a typical day, there are 3 flights from Seattle/Tacoma Intl to Helena, all of which are around 4h 30m for a nonstop flight. You can also purchase a plane ticket from 1 airline when you book a flight from Seattle/Tacoma Intl to Helena.

  • How popular is this Seattle to Helena flight route?

    This flight path from Seattle/Tacoma Intl to Helena was viewed by 3 users in the past month. Keep an eye out for changes in search interest prior to high and low season.

  • How long is the flight from Seattle to Helena?

    Alaska Airlines, United Airlines, and Delta can get you from Seattle to Helena in just under 1h 33m. Your travel time can differ by up to 6h 14m. There are 489 mi between Seattle and Helena. This flight may include one or multiple stops.

  • What is the cheapest airline to fly from Seattle to Helena round-trip?

    Alaska Airlines, at $157, was found to be the cheapest airline from Seattle to Helena.. Alaska Airlines is priced at 49% lower than the current average price of a flight leaving 3 months from now.

  • What are the most reliable airlines from Seattle to Helena?

    Before booking your flight to Helena from Seattle, check out the most reliable airlines to get you to your destination on time: Qatar Airways (93%), Korean Air (90%), Hawaiian Airlines( 90%).

  • What are the cheapest flights from Seattle to Helena?

    While on average a flight from Seattle to Helena is generally $157, our data shows the cheapest flight currently is $157. When looking at the most popular route, (Seattle/Tacoma Intl - Helena), you can expect to pay $278 for that flight.

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

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

  • How can I find direct flights from Seattle to Helena?

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

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

    Yes. Cheapflights offers flight deals from Seattle 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 Seattle to Helena?

    Currently, November is the cheapest month in which you can book a flight from Seattle to Helena (average of $107). Flying from Seattle to Helena in March is currently the most expensive (average of $167). 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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Top airline flying from Seattle to Helena

Discover the top airline that operate flights from Seattle to Helena. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated November 17, 2025.
AirlineCheapestAverageFlexibilityOn-time
Alaska AirlinesCheapest$157Average$240FlexibilityNo cancel feeOn-time75%

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