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$99+ Cheap flights from Helena to Seattle (HLN - SEA)

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 12/9. Fares are subject to change and may not be available on all flights or dates of travel.
HLN — SEA
Dec 12 — Dec 191
Fri 12/12
Fri 12/19
1 adult, Economy
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Find flight deals from Helena to Seattle

Cheapest flights from Helena to Seattle
Explore the most affordable flight options available from Helena to Seattle. Find the lowest fares from popular airlines and budget airlines, with prices last updated on November 12, 2025.

This Orbitz deal was found by Cheapflights users on 11/10. 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 Orbitz is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 12/56:28 pmHLN - SEA
Nonstop1h 52mAlaska Airlines
Wed 12/103:13 pmSEA - HLN
Nonstop1h 38mAlaska Airlines
Deal found 11/10$177
This Alaska Airlines deal was found by Cheapflights users on 11/11. 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.
Tue 12/26:28 pmHLN - SEA
Nonstop1h 52mAlaska Airlines
Tue 12/93:13 pmSEA - HLN
Nonstop1h 38mAlaska Airlines
Deal found 11/11$187
This Delta deal was found by Cheapflights users on 11/10. 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 12/55:30 amHLN - SEA
1 stop4h 55mDelta
Thu 12/115:25 amSEA - HLN
1 stop6h 00mDelta
Deal found 11/10$227
This Expedia deal was found by Cheapflights users on 11/11. 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 Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 12/56:28 pmHLN - SEA
Nonstop1h 52mAlaska Airlines
Thu 12/113:13 pmSEA - HLN
Nonstop1h 38mAlaska Airlines
Deal found 11/11$228
This Delta deal was found by Cheapflights users on 11/11. 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 12/41:06 pmHLN - SEA
1 stop4h 48mDelta
Sat 12/65:05 amSEA - HLN
1 stop6h 20mDelta
Deal found 11/11$248
This Delta deal was found by Cheapflights users on 11/10. 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 12/51:06 pmHLN - SEA
1 stop4h 48mDelta
Wed 12/105:25 amSEA - HLN
1 stop6h 00mDelta
Deal found 11/10$262
This United Airlines deal was found by Cheapflights users on 11/10. 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 12/42:30 pmHLN - SEA
1 stop8h 16mUnited Airlines
Sat 12/612:35 pmSEA - HLN
1 stop7h 47mUnited Airlines
Deal found 11/10$277
This United Airlines deal was found by Cheapflights users on 11/10. 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 12/52:30 pmHLN - SEA
2 stops9h 45mUnited Airlines
Wed 12/105:00 amSEA - HLN
1 stop7h 47mUnited Airlines
Deal found 11/10$413
This United Airlines deal was found by Cheapflights users on 11/11. 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.
Tue 12/26:30 amHLN - SEA
2 stops30h 48mUnited Airlines
Tue 12/95:00 amSEA - HLN
1 stop7h 47mUnited Airlines
Deal found 11/11$416

Cheap flight deals from Helena to Seattle

Discover tips and strategies to find the most affordable flight options for your journey from Helena (HLN) to Seattle (SEA). 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 12, 2025.

Most accurate provider

eDreams
3 stars

Most trusted provider

eDreams
3 stars

Round-trip from

$157
(Alaska Airlines)

One-way from

$99
(Alaska Airlines)

Popular in

March

Cheapest in

January

Average price

$282

Good round-trip deal

$288 or less

Good one-way deal

$166 or less
Provider with most accurate pricing for Helena-Seattle/Tacoma Intl flight deals.
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Provider most trusted by Cheapflights users for Helena-Seattle/Tacoma Intl flights.
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From Helena to Seattle/Tacoma Intl
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One-way flight from Helena to Seattle/Tacoma Intl
Search Deals
Highest demand for flights based on searches. 2% potential increase in price ($7 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 1% potential price decrease ($6 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 Helena to Seattle/Tacoma Intl.
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Price to beat on a one-way flight from Helena to Seattle/Tacoma Intl.
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Cheapflights Fare Finder

 
Customize your flight search to find flights from Helena to Seattle 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 12, 2025.
Use the filters below to find and compare flights from Helena to Seattle that are best for you.

Fly from

Helena

Fly to

Seattle

Route

Depart

Return

Price

HelenaSeattle

HLN - SEA

HLNSEA

Helena

Sat 2/28

4:36 pm-5:26 pm

Nonstop1h 50m

Seattle/Tacoma Intl

Tue 3/3

1:21 pm-3:59 pm

Nonstop1h 38m

$177

HelenaSeattle

HLN - SEA

HLNSEA

Helena

Fri 12/5

6:28 pm-7:20 pm

Nonstop1h 52m

Seattle/Tacoma Intl

Wed 12/10

3:13 pm-5:51 pm

Nonstop1h 38m

$177

HelenaSeattle

HLN - SEA

HLNSEA

Helena

Tue 12/2

6:28 pm-7:20 pm

Nonstop1h 52m

Seattle/Tacoma Intl

Tue 12/9

3:13 pm-5:51 pm

Nonstop1h 38m

$187

HelenaSeattle

HLN - SEA

HLNSEA

Helena

Mon 3/2

4:36 pm-5:26 pm

Nonstop1h 50m

Seattle/Tacoma Intl

Mon 3/9

1:21 pm-3:59 pm

Nonstop1h 38m

$197

HelenaSeattle

HLN - SEA

HLNSEA

Helena

Sat 2/28

1:07 pm-4:45 pm

1 stop4h 38m

Seattle/Tacoma Intl

Tue 3/3

4:55 pm-10:29 pm

1 stop4h 34m

$207

HelenaSeattle

HLN - SEA

HLNSEA

Helena

Wed 12/10

6:28 pm-7:20 pm

Nonstop1h 52m

Seattle/Tacoma Intl

Wed 12/17

3:13 pm-5:51 pm

Nonstop1h 38m

$218

HelenaSeattle

HLN - SEA

HLNSEA

Helena

Thu 12/4

1:06 pm-4:54 pm

1 stop4h 48m

Seattle/Tacoma Intl

Sat 12/6

5:05 am-12:25 pm

1 stop6h 20m

$248

HelenaSeattle

HLN - SEA

HLNSEA

Helena

Fri 12/5

1:06 pm-4:54 pm

1 stop4h 48m

Seattle/Tacoma Intl

Wed 12/10

5:25 am-12:25 pm

1 stop6h 00m

$262

HelenaSeattle

HLN - SEA

HLNSEA

Helena

Thu 12/4

2:30 pm-9:46 pm

1 stop8h 16m

Seattle/Tacoma Intl

Sat 12/6

12:35 pm-9:22 pm

1 stop7h 47m

$277

HelenaSeattle

HLN - SEA

HLNSEA

Helena

Fri 12/5

2:30 pm-9:46 pm

1 stop8h 16m

Seattle/Tacoma Intl

Wed 12/10

5:00 am-1:47 pm

1 stop7h 47m

$277

Flights are sorted by cheapest round-trip flights first.

Deals found on 11/11

Showing 1-10 of 21 results
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Compare providers for flights from Helena to Seattle

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 Helena to Seattle in November.
ProviderPrice AccuracyTrust Score*
ExpediaPrice Accuracy2 starsTrust Score*3 stars
eDreamsPrice Accuracy3 starsTrust Score*3 stars
FlightHubPrice Accuracy3 starsTrust Score*1 star

*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 Helena-Seattle flights, users find the pricing of eDreams to be most consistent on Cheapflights vs. eDreams Users can find the same prices on Helena-Seattle flight deals on Cheapflights vs. eDreams >95% of the time. Price accuracy is based on data collected from Helena-Seattle flight searches over the past month and is updated monthly.
  • Most trusted provider: When it comes to deals on Helena-Seattle flights, Cheapflights users trust eDreams the most. eDreams 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 Helena-Seattle 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 Helena to Seattle

Have a flexible travel schedule? Discover the best time to fly to Seattle from Helena 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 Helena to Seattle

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

Currently, November is the cheapest month in which you can book a flight from Helena to Seattle (average of $95). Flying from Helena to Seattle in April is currently the most expensive (average of $177). 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 HLN to SEA?

Find hourly flight availability from Helena to Seattle. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated November 12, 2025.

A simple way to save on the total cost of your ticket is to fly from Helena to Seattle in the afternoon. If you’re flexible enough to do this you can expect to save up to 21% on your trip compared to booking a flight at noon.

How much does it cost to fly round-trip from Helena to Seattle?

Reviews of airlines servicing Seattle

Get insights into the airlines that provide service to Seattle. 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 Seattle. Reviews last updated November 12, 2025.
Peruse reviews from past customers who have flown with Alaska Airlines and Hawaiian Airlines from Helena to Seattle to help guide your decision. You can also see how each airline stacks up in terms of entertainment options, comfort, food, crew/service, and boarding process.
Alaska Airlines
8.0
Very good
11,275 reviews

Crew

8.5

Boarding

8.1

Overall

8.0

Food

7.1

Entertainment

7.0

Comfort

7.8

Reviews

1 / 20
10.0
Excellent

Anonymous,Aug 2025

MFR - SEA

Great smooth flight. Was hour and half late though. Don't know why
Alaska Airlines
8.0
Very good
11,275 reviews
Alaska Airlines
8.0
Very good
11,275 reviews

Crew

8.5

Boarding

8.1

Overall

8.0

Food

7.1

Entertainment

7.0

Comfort

7.8

Reviews

1 / 20
10.0
Excellent

Anonymous,Aug 2025

MFR - SEA

Great smooth flight. Was hour and half late though. Don't know why
Hawaiian Airlines
7.8
Good
2,809 reviews
Alaska Airlines
8.0
Very good
11,275 reviews

Crew

8.5

Boarding

8.1

Overall

8.0

Food

7.1

Entertainment

7.0

Comfort

7.8

Reviews

1 / 20
10.0
Excellent

Anonymous,Aug 2025

MFR - SEA

Great smooth flight. Was hour and half late though. Don't know why

Related info for your journey

Find useful and relevant information for your journey from Helena to Seattle. 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 Helena to Seattle?

    If you wish to fly to Seattle from Helena, then you need to book flights from Helena to Seattle/Tacoma Intl. There are 2 flights from Helena (HLN) to Seattle/Tacoma Intl (SEA) per day to choose from. Flights to Seattle from Helena are available from 2 different airlines, which means you should have some options if you want to compare airfare deals. 1h 45m is how long a nonstop flight from Helena to Seattle/Tacoma Intl typically takes.

  • How popular is this Helena to Seattle flight route?

    Within the past month, 3 users have taken a look at flights from Helena to Seattle/Tacoma Intl.

  • How long is the flight from Helena to Seattle?

    For as low as $177, Hawaiian Airlines can have you in Seattle from Helena in 1h 50m. The distance from Helena to Seattle is about 489 mi. Both multi-stop and nonstop flights can be found to your destination and back.

  • What are the cheapest airlines flying from Helena to Seattle round-trip?

    Flying on Hawaiian Airlines is currently your cheapest option to Seattle, with prices starting at $149. Another option worth looking into is Alaska Airlines, starting at $157 round trip. Users have found that Hawaiian Airlines is 46% cheaper than the other options available to this destination.

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

    Before booking your flight to Seattle from Helena, check out the most reliable airlines to get you to your destination on time: Hawaiian Airlines (80%), Alaska Airlines (79%), Horizon Air( 79%).

  • What are the cheapest flights from Helena to Seattle?

    On average you can expect to pay $320 for a flight from Helena to Seattle. The cheapest flight overall is $88 while the most popular route, (Helena - Seattle/Tacoma Intl) is currently priced at $177.

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

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

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

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

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

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

    Currently, November is the cheapest month in which you can book a flight from Helena to Seattle (average of $95). Flying from Helena to Seattle in April is currently the most expensive (average of $177). 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.

See more FAQs

Traveling to a place near Seattle?

Book flights to Seattle if you plan to visit one of these locations
SeaTac
Tacoma
Tukwila
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Edmonds
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Renton
Kirkland
Lacey
Kent
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Federal Way
Fife
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Aberdeen

Browse thousands of different options on Cheapflights for your next trip

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Top 2 airlines flying from Helena to Seattle

Discover the top 2 airlines that operate flights from Helena to Seattle. 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 12, 2025.
AirlineCheapestAverageFlexibilityOn-time
Hawaiian AirlinesCheapest$149Average$268FlexibilityNo cancel feeOn-time85%
Alaska AirlinesCheapest$157Average$287FlexibilityNo cancel feeOn-time75%

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