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Helena

$157+ Cheap flights from Seattle to Helena (SEA - HLN)

This is the cheapest round-trip flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 11/8. Fares are subject to change and may not be available on all flights or dates of travel.
SEA — HLN
Oct 17 — Oct 241
Fri 10/17
Fri 10/24
1 adult, Economy
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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 September 17, 2025.

Round-trip from

$157
(Alaska Airlines)

Popular in

December

Cheapest in

September

Average price

$197

Good round-trip deal

$217 or less
From Seattle/Tacoma Intl to Helena
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Highest demand for flights based on searches. 17% potential increase in price ($65 potential increase over avg. RT price).
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Cheapest flight prices on average. 6% potential price decrease ($19 potential savings vs. average RT price).
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Average for round-trip flights in September 2025
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Price to beat on a round-trip flight from Seattle/Tacoma Intl to Helena.
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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 September 17, 2025.

This Alaska Airlines deal was found by Cheapflights users on 9/16. 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.
Sat 11/83:00 pmSEA - HLN
Nonstop1h 36mAlaska Airlines
Tue 11/116:13 pmHLN - SEA
Nonstop1h 49mAlaska Airlines
Deal found 9/16$157
This Alaska Airlines deal was found by Cheapflights users on 9/16. 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.
Sat 11/83:00 pmSEA - HLN
Nonstop1h 36mAlaska Airlines
Sun 11/96:13 pmHLN - SEA
Nonstop1h 49mAlaska Airlines
Deal found 9/16$187
This KAYAK deal was found by Cheapflights users on 9/16. 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 11/73:00 pmSEA - HLN
Nonstop1h 36mAlaska Airlines
Mon 11/106:13 pmHLN - SEA
Nonstop1h 49mAlaska Airlines
Deal found 9/16$201
This Delta deal was found by Cheapflights users on 9/16. 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.
Sat 11/85:00 pmSEA - HLN
1 stop4h 16mDelta
Mon 11/101:06 pmHLN - SEA
1 stop4h 49mDelta
Deal found 9/16$207
This Alaska Airlines deal was found by Cheapflights users on 9/16. 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 11/63:00 pmSEA - HLN
Nonstop1h 36mAlaska Airlines
Mon 11/106:13 pmHLN - SEA
Nonstop1h 49mAlaska Airlines
Deal found 9/16$217
This Delta deal was found by Cheapflights users on 9/16. 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.
Sat 11/85:00 pmSEA - HLN
1 stop4h 16mDelta
Tue 11/111:06 pmHLN - SEA
1 stop4h 49mDelta
Deal found 9/16$227
This Delta deal was found by Cheapflights users on 9/15. 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 10/135:00 pmSEA - HLN
1 stop4h 16mDelta
Mon 10/201:00 pmHLN - SEA
1 stop4h 32mDelta
Deal found 9/15$237
This Delta deal was found by Cheapflights users on 9/16. 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 11/65:25 amSEA - HLN
1 stop5h 55mDelta
Mon 11/101:06 pmHLN - SEA
1 stop4h 49mDelta
Deal found 9/16$257
This Alaska Airlines deal was found by Cheapflights users on 9/16. 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.
Wed 11/193:00 pmSEA - HLN
Nonstop1h 36mAlaska Airlines
Fri 11/287:32 pmHLN - SEA
Nonstop1h 55mAlaska Airlines
Deal found 9/16$268
This Delta deal was found by Cheapflights users on 9/15. 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.
Fri 10/35:30 amSEA - HLN
1 stop5h 50mDelta
Tue 10/71:00 pmHLN - SEA
1 stop6h 24mDelta
Deal found 9/15$277
This Hawaiian Airlines deal was found by Cheapflights users on 9/16. 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 Hawaiian Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 11/214:07 pmSEA - HLN
Nonstop1h 45mHawaiian Airlines
Fri 11/287:32 pmHLN - SEA
Nonstop1h 55mHawaiian Airlines
Deal found 9/16$298

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 September 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 11/8

3:00 pm-5:36 pm

Nonstop1h 36m

Helena

Tue 11/11

6:13 pm-7:02 pm

Nonstop1h 49m

$157

SeattleHelena

SEA - HLN

SEAHLN

Seattle/Tacoma Intl

Sat 11/8

3:00 pm-5:36 pm

Nonstop1h 36m

Helena

Sun 11/9

6:13 pm-7:02 pm

Nonstop1h 49m

$187

SeattleHelena

SEA - HLN

SEAHLN

Seattle/Tacoma Intl

Fri 11/7

3:00 pm-5:36 pm

Nonstop1h 36m

Helena

Tue 11/11

6:13 pm-7:02 pm

Nonstop1h 49m

$187

SeattleHelena

SEA - HLN

SEAHLN

Seattle/Tacoma Intl

Thu 11/6

3:00 pm-5:36 pm

Nonstop1h 36m

Helena

Tue 11/11

6:13 pm-7:02 pm

Nonstop1h 49m

$187

SeattleHelena

SEA - HLN

SEAHLN

Seattle/Tacoma Intl

Sat 11/8

5:00 pm-10:16 pm

1 stop4h 16m

Helena

Mon 11/10

1:06 pm-4:55 pm

1 stop4h 49m

$207

SeattleHelena

SEA - HLN

SEAHLN

Seattle/Tacoma Intl

Thu 11/6

3:00 pm-5:36 pm

Nonstop1h 36m

Helena

Mon 11/10

6:13 pm-7:02 pm

Nonstop1h 49m

$217

SeattleHelena

SEA - HLN

SEAHLN

Seattle/Tacoma Intl

Mon 10/13

3:07 pm-5:41 pm

Nonstop1h 34m

Helena

Mon 10/20

6:18 pm-7:10 pm

Nonstop1h 52m

$217

SeattleHelena

SEA - HLN

SEAHLN

Seattle/Tacoma Intl

Fri 11/7

3:00 pm-5:36 pm

Nonstop1h 36m

Helena

Mon 11/10

6:13 pm-7:02 pm

Nonstop1h 49m

$217

SeattleHelena

SEA - HLN

SEAHLN

Seattle/Tacoma Intl

Sat 11/8

5:00 pm-10:16 pm

1 stop4h 16m

Helena

Tue 11/11

1:06 pm-4:55 pm

1 stop4h 49m

$227

SeattleHelena

SEA - HLN

SEAHLN

Seattle/Tacoma Intl

Sat 11/8

5:00 pm-10:16 pm

1 stop4h 16m

Helena

Sun 11/9

5:33 am-9:19 am

1 stop4h 46m

$227

Flights are sorted by cheapest round-trip flights first.

Deals found on 9/15

Showing 1-10 of 18 results
1
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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, February is the cheapest month in which you can book a flight from Seattle to Helena (average of $353). Flying from Seattle to Helena in May is currently the most expensive (average of $517). 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 September 17, 2025.

It’s optimal to fly from Seattle to Helena at noon. By choosing this option you can save up to 21% 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 September 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
10,000 reviews

Comfort

7.8

Entertainment

7.1

Food

7.1

Boarding

8.1

Crew

8.5

Overall

8.0

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
10,000 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Comfort

7.8

Entertainment

7.1

Food

7.1

Boarding

8.1

Crew

8.5

Overall

8.0

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 1h 34m 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 and Delta can get you from Seattle to Helena in just under 1h 36m. Your travel time can differ by up to 2h 40m. 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: Alaska Airlines (77%), Horizon Air (77%), Hawaiian Airlines( 77%).

  • What are the cheapest flights from Seattle to Helena?

    While on average a flight from Seattle to Helena is generally $245, our data shows the cheapest flight currently is $217. When looking at the most popular route, (Seattle/Tacoma Intl - Helena), you can expect to pay $217 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, February is the cheapest month in which you can book a flight from Seattle to Helena (average of $353). Flying from Seattle to Helena in May is currently the most expensive (average of $517). 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 September 17, 2025.
AirlineCheapestAverageFlexibilityOn-time
Alaska AirlinesCheapest$157Average$266FlexibilityNo cancel feeOn-time75%

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