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$73+ 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 11/8. Fares are subject to change and may not be available on all flights or dates of travel.
HLN — SEA
oct. 25 — nov. 11
sáb. 10/25
sáb. 11/1
1 adult, Economy
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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 septiembre 25, 2025.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$106
(Hawaiian Airlines)

One-way from

$73
(Vakatrip)

Popular in

November

Cheapest in

January

Average price

$273

Good round-trip deal

$217 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
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Highest demand for flights based on searches. 8% potential increase in price ($26 potential increase over avg. RT price).
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Cheapest flight prices on average. 2% potential price decrease ($8 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 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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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 septiembre 25, 2025.

This Alaska Airlines deal was found by Cheapflights users on 9/23. 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.
sáb. 10/256:18 pmHLN - SEA
Nonstop1h 52mAlaska Airlines
mar. 10/283:00 pmSEA - HLN
Nonstop1h 36mAlaska Airlines
Deal found 9/23$137
This Alaska Airlines deal was found by Cheapflights users on 9/23. 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.
vie. 10/246:18 pmHLN - SEA
Nonstop1h 52mAlaska Airlines
mar. 10/283:00 pmSEA - HLN
Nonstop1h 36mAlaska Airlines
Deal found 9/23$147
This Alaska Airlines deal was found by Cheapflights users on 9/23. 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.
jue. 10/236:18 pmHLN - SEA
Nonstop1h 52mAlaska Airlines
lun. 10/273:00 pmSEA - HLN
Nonstop1h 36mAlaska Airlines
Deal found 9/23$157
This Delta deal was found by Cheapflights users on 9/23. 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.
vie. 10/241:00 pmHLN - SEA
1 stop6h 24mDelta
mar. 10/285:25 amSEA - HLN
1 stop5h 55mDelta
Deal found 9/23$187
This Expedia deal was found by Cheapflights users on 9/23. 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.
vie. 11/76:13 pmHLN - SEA
Nonstop1h 49mAlaska Airlines
mar. 11/113:00 pmSEA - HLN
Nonstop1h 36mAlaska Airlines
Deal found 9/23$212
This Delta deal was found by Cheapflights users on 9/24. 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.
vie. 11/141:06 pmHLN - SEA
1 stop4h 49mDelta
dom. 11/165:25 amSEA - HLN
1 stop6h 01mDelta
Deal found 9/24$228
This Alaska Airlines deal was found by Cheapflights users on 9/24. 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.
mié. 12/176:28 pmHLN - SEA
Nonstop1h 52mAlaska Airlines
sáb. 12/203:17 pmSEA - HLN
Nonstop1h 38mAlaska Airlines
Deal found 9/24$242
This Delta deal was found by Cheapflights users on 9/24. 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.
vie. 10/245:45 amHLN - SEA
1 stop4h 21mDelta
lun. 10/275:25 amSEA - HLN
1 stop5h 55mDelta
Deal found 9/24$279
This Delta deal was found by Cheapflights users on 9/24. 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.
jue. 11/61:00 pmHLN - SEA
1 stop4h 32mDelta
lun. 11/105:25 amSEA - HLN
1 stop6h 01mDelta
Deal found 9/24$308
This Alaska Airlines deal was found by Cheapflights users on 9/23. 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.
mié. 10/86:18 pmHLN - SEA
Nonstop1h 52mAlaska Airlines
dom. 10/123:07 pmSEA - HLN
Nonstop1h 34mAlaska Airlines
Deal found 9/23$318
This Delta deal was found by Cheapflights users on 9/23. 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.
mié. 10/81:00 pmHLN - SEA
1 stop4h 32mDelta
dom. 10/125:25 amSEA - HLN
1 stop5h 55mDelta
Deal found 9/23$338

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 septiembre 25, 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

sáb. 10/25

6:18 pm-7:10 pm

Nonstop1h 52m

Seattle/Tacoma Intl

mar. 10/28

3:00 pm-5:36 pm

Nonstop1h 36m

$137

HelenaSeattle

HLN - SEA

HLNSEA

Helena

sáb. 2/28

4:10 pm-4:59 pm

Nonstop1h 49m

Seattle/Tacoma Intl

mar. 3/3

1:05 pm-3:43 pm

Nonstop1h 38m

$137

HelenaSeattle

HLN - SEA

HLNSEA

Helena

vie. 10/24

6:18 pm-7:10 pm

Nonstop1h 52m

Seattle/Tacoma Intl

mar. 10/28

3:00 pm-5:36 pm

Nonstop1h 36m

$147

HelenaSeattle

HLN - SEA

HLNSEA

Helena

sáb. 10/25

1:00 pm-4:32 pm

1 stop4h 32m

Seattle/Tacoma Intl

mar. 10/28

5:25 am-12:20 pm

1 stop5h 55m

$157

HelenaSeattle

HLN - SEA

HLNSEA

Helena

jue. 10/23

6:18 pm-7:10 pm

Nonstop1h 52m

Seattle/Tacoma Intl

lun. 10/27

3:00 pm-5:36 pm

Nonstop1h 36m

$157

HelenaSeattle

HLN - SEA

HLNSEA

Helena

vie. 10/24

1:00 pm-6:24 pm

1 stop6h 24m

Seattle/Tacoma Intl

mar. 10/28

5:25 am-12:20 pm

1 stop5h 55m

$187

HelenaSeattle

HLN - SEA

HLNSEA

Helena

vie. 11/7

6:13 pm-7:02 pm

Nonstop1h 49m

Seattle/Tacoma Intl

mar. 11/11

3:00 pm-5:36 pm

Nonstop1h 36m

$212

HelenaSeattle

HLN - SEA

HLNSEA

Helena

sáb. 2/28

12:50 pm-5:00 pm

1 stop5h 10m

Seattle/Tacoma Intl

mar. 3/3

4:55 pm-10:38 pm

1 stop4h 43m

$228

HelenaSeattle

HLN - SEA

HLNSEA

Helena

vie. 11/14

1:06 pm-4:55 pm

1 stop4h 49m

Seattle/Tacoma Intl

dom. 11/16

5:25 am-12:26 pm

1 stop6h 01m

$228

HelenaSeattle

HLN - SEA

HLNSEA

Helena

sáb. 11/8

6:13 pm-7:02 pm

Nonstop1h 49m

$73

Flights are sorted by cheapest round-trip flights first.

Deals found on 9/24

Showing 1-10 of 18 results
1
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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 September.
ProviderPrice AccuracyTrust Score*
ExpediaPrice Accuracy2 starsTrust Score*3 stars
FlightHubPrice Accuracy3 starsTrust Score*3 stars
eDreamsPrice 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 Helena-Seattle flights, users find the pricing of FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on Helena-Seattle flight deals on Cheapflights vs. FlightHub >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 FlightHub the most. FlightHub 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, January is the cheapest month in which you can book a flight from Helena to Seattle (average of $238). Flying from Helena to Seattle in June is currently the most expensive (average of $388). 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 septiembre 25, 2025.

A simple way to save on the total cost of your ticket is to fly from Helena to Seattle in the evening. If you’re flexible enough to do this you can expect to save up to 17% on your trip compared to booking a flight in the morning.

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 septiembre 25, 2025.
Peruse reviews from past customers who have flown with Alaska Airlines, Delta, 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
10,000 reviews

Comfort

7.8

Boarding

8.1

Overall

8.0

Crew

8.5

Entertainment

7.0

Food

7.1

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

Comfort

7.8

Boarding

8.1

Overall

8.0

Crew

8.5

Entertainment

7.0

Food

7.1

Reviews

1 / 20
10.0
Excellent

Anonymous,Aug 2025

MFR - SEA

Great smooth flight. Was hour and half late though. Don't know why
Delta
8.0
Very good
7,973 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Comfort

7.8

Boarding

8.1

Overall

8.0

Crew

8.5

Entertainment

7.0

Food

7.1

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
2,750 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Comfort

7.8

Boarding

8.1

Overall

8.0

Crew

8.5

Entertainment

7.0

Food

7.1

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 3 flights from Helena (HLN) to Seattle/Tacoma Intl (SEA) per day to choose from. Flights to Seattle from Helena are available from 3 different airlines, which means you should have some options if you want to compare airfare deals. 1h 48m 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 $137, Alaska Airlines can have you in Seattle from Helena in 1h 52m. 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. Additional round-trip tickets that might be worth considering are offered by Alaska Airlines and Delta, with the lowest prices starting at $178 and $196, respectively. Users have found that Hawaiian Airlines is 47% cheaper than the other options available to this destination.

  • What are the cheapest airlines to fly from Helena to Seattle one-way?

    For one-way options, check prices for Hawaiian Airlines. According to our data, you can fly for as low as $73. Users have also found prices from $83 and $144 on Delta and United Airlines, respectively.

  • 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: Alaska Airlines (61%), Horizon Air (61%), Hawaiian Airlines( 61%).

  • What are the cheapest flights from Helena to Seattle?

    On average you can expect to pay $272 for a flight from Helena to Seattle. The cheapest flight overall is $161 while the most popular route, (Helena - Seattle/Tacoma Intl) is currently priced at $106.

  • 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, January is the cheapest month in which you can book a flight from Helena to Seattle (average of $238). Flying from Helena to Seattle in June is currently the most expensive (average of $388). 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
Tukwila
Tacoma
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Leavenworth
Renton
Lacey
Olympia
Kent
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Shoreline

Browse thousands of different options on Cheapflights for your next trip

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Top 3 airlines flying from Helena to Seattle

Discover the top 3 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 septiembre 25, 2025.
AirlineCheapestAverageFlexibilityOn-time
Hawaiian AirlinesCheapest$149Average$268FlexibilityNo cancel feeOn-time85%
Alaska AirlinesCheapest$178Average$287FlexibilityNo cancel feeOn-time75%
DeltaCheapest$196Average$578FlexibilityNo cancel feeOn-timeN/A

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