HomeSearch by dateVacation packagesHotelsFlight dealsCar rentalTravel tips & news
Seattle

$228+ Cheap flights from Helena to Seattle (HLN - SEA)

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 2/5. Fares are subject to change and may not be available on all flights or dates of travel.
HLN — SEA
Jan 28 — Feb 41
Tue 1/28
Tue 2/4
1 adult, Economy
We work with more than 300 partners to bring you better travel deals

Find cheap flights from Helena to Seattle with Cheapflights

1. Tell us where you want to go
Enter your travel information like dates, passengers, trip type (one-way or round trip), and preferred cabin class then click “Find deals”
2. Select your favorite providers
We find the providers serving your travel needs. Choose up to four travel providers to compare side-by-side for flights, hotels, or car rentals.
3. Compare prices and book
Review each provider’s pricing and select the best option for you! Book through your favorite provider’s website for a seamless experience.

The best prices from Helena to Seattle/Tacoma Intl are usually found in February or May, booked 43 days in advance, depart on a Thursday or Wednesday and return on a Tuesday

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 January 23, 2025.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$228
(Alaska Airlines)

Popular in

November

Cheapest in

February

Average price

$267

Good round-trip deal

$338 or less

Good one-way deal

$234 or less
Provider with most accurate pricing for Helena-Seattle/Tacoma Intl flight deals.
Search Deals
Provider most trusted by Cheapflights users for Helena-Seattle/Tacoma Intl flights.
Search Deals
From Helena to Seattle/Tacoma Intl
Search Deals
Highest demand for flights based on searches. 20% potential increase in price ($71 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 7% potential price decrease ($20 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in January 2025
Search Deals
Price to beat on a round-trip flight from Helena to Seattle/Tacoma Intl.
Search Deals
Price to beat on a one-way flight from Helena to Seattle/Tacoma Intl.
Search Deals

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 January 23, 2025.

This Alaska Airlines deal was found by Cheapflights users on 1/21. 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 2/54:41 pmHLN - SEA
Nonstop1h 51mAlaska Airlines
Wed 2/121:29 pmSEA - HLN
Nonstop1h 35mAlaska Airlines
Deal found 1/21$228
This Delta deal was found by Cheapflights users on 1/21. 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.
Wed 2/51:30 pmHLN - SEA
1 stop6h 16mDelta
Wed 2/125:30 amSEA - HLN
1 stop6h 20mDelta
Deal found 1/21$247
This United deal was found by Cheapflights users on 1/23. 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 United is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 3/12:05 pmHLN - SEA
1 stop8h 00mUnited Airlines
Wed 3/55:02 amSEA - HLN
1 stop7h 23mUnited Airlines
Deal found 1/23$287

Find flights from Helena to Seattle within your budget

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 January 23, 2025.

Fly from

Any airport

Fly to

Any airport

Route

Depart

Return

Price

HelenaSeattle

HLN - SEA

HLNSEA

Helena

Wed 2/5

4:41 pm-5:32 pm

Nonstop1h 51m

Seattle/Tacoma Intl

Wed 2/12

1:29 pm-4:04 pm

Nonstop1h 35m

$228

HelenaSeattle

HLN - SEA

HLNSEA

Helena

Wed 2/5

1:30 pm-6:46 pm

1 stop6h 16m

Seattle/Tacoma Intl

Wed 2/12

5:30 am-12:50 pm

1 stop6h 20m

$247

HelenaSeattle

HLN - SEA

HLNSEA

Helena

Sat 3/1

2:05 pm-9:05 pm

1 stop8h 00m

Seattle/Tacoma Intl

Wed 3/5

5:02 am-1:25 pm

1 stop7h 23m

$287

Flights are sorted by cheapest round-trip flights first.

Deals found on 1/21

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 January.
ProviderPrice AccuracyTrust Score*
ExpediaPrice Accuracy1 starTrust 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.

Travel insights for flights from Helena to Seattle

Get recent, data-driven insights about flights from Helena to Seattle including ideal travel times, pricing trends, and more.

How far ahead should I book a flight from Helena to Seattle?

Use this chart to determine the optimal time to book a round-trip flight from Helena to Seattle. Price data was last updated on January 17, 2025.

To ensure you get the cheapest price possible for a flight from Helena to Seattle, you should look to book at least 43 days in advance of your intended travel date. The price of your flight may increase if you delay and leave booking until a week or so before departure.

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 July is currently the most expensive (average of $411). 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 January 23, 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 5% on your trip compared to booking a flight in the morning.

Weekly flight availability from Helena to Seattle

Explore weekly flight availability from Helena to Seattle. Discover flights operating on different days of the week, giving you the flexibility to choose a travel day that best fits your plans. Compare info to find the most convenient option for your journey. Data last updated January 23, 2025.

The most flights from HLN to SEA are scheduled on a Monday (3 on average). You will have fewer flight options on Saturday, which is when the least amount of flights are scheduled (1 on average).

Rainfall in Seattle by month

Plan your trip to Seattle by taking into account the average rainfall totals by month.

In terms of precipitation, rainfall in Seattle ranges from 0.7 - 6.6 inches per month. November is typically the wettest month, when rainfall can reach 6.6 in. July is typically the driest time to visit Seattle when rainfall is around 0.7 in.

Temperature in Seattle by month

Plan your trip to Seattle by taking into account the average temperature totals by month.

If weather is an important factor for your trip to Seattle, use this chart to help with planning. For those seeking warmer temperatures, July is the ideal time of year to visit, when temperatures reach an average of 66.2 F. Travelers looking to avoid the cold should look outside of December, when temperatures are typically at their lowest (around 41.0 F).

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 January 23, 2025.
Alaska Airlines
8.0
Very good
9,699 reviews

Entertainment

7.1

Overall

8.0

Boarding

8.2

Crew

8.5

Comfort

7.9

Food

7.1

Reviews

1 / 10

Very friendly. I really liked that they had water for us in cartons not plastic. Impressed with Alaska Airlines, First time I had flown them

Alaska Airlines
8.0
Very good
9,699 reviews
Alaska Airlines
8.0
Very good
9,699 reviews

Entertainment

7.1

Overall

8.0

Boarding

8.2

Crew

8.5

Comfort

7.9

Food

7.1

Reviews

1 / 10

Very friendly. I really liked that they had water for us in cartons not plastic. Impressed with Alaska Airlines, First time I had flown them

Delta
8.0
Very good
8,512 reviews
Alaska Airlines
8.0
Very good
9,699 reviews

Entertainment

7.1

Overall

8.0

Boarding

8.2

Crew

8.5

Comfort

7.9

Food

7.1

Reviews

1 / 10

Very friendly. I really liked that they had water for us in cartons not plastic. Impressed with Alaska Airlines, First time I had flown them

United Airlines
7.4
Good
8,970 reviews
Alaska Airlines
8.0
Very good
9,699 reviews

Entertainment

7.1

Overall

8.0

Boarding

8.2

Crew

8.5

Comfort

7.9

Food

7.1

Reviews

1 / 10

Very friendly. I really liked that they had water for us in cartons not plastic. Impressed with Alaska Airlines, First time I had flown them

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. 4h 33m 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, 2 users have taken a look at flights from Helena to Seattle/Tacoma Intl.

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

    Flying on Alaska Airlines is currently your cheapest option to Seattle, with prices starting at $228. Additional round-trip tickets that might be worth considering are offered by Delta and United Airlines, with the lowest prices starting at $247 and $287, respectively. Users have found that Alaska Airlines is 17% 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: Korean Air (86%), Hawaiian Airlines (72%), Horizon Air( 62%).

  • What are the cheapest flights from Helena to Seattle?

    On average you can expect to pay $452 for a flight from Helena to Seattle. The cheapest flight overall is $164 while the most popular route, (Helena - Seattle/Tacoma Intl) is currently priced at $247.

  • 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 July is currently the most expensive (average of $411). 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 Helena?

Book flights to Helena if you plan to visit one of these locations
SeaTac
Tukwila
Renton
Tacoma
Lacey
Federal Way
Ocean Shores
Leavenworth
Olympia
Marysville
Centralia
Cle Elum
Mukilteo
Aberdeen
Lakewood
Issaquah
Shoreline
Lynnwood
Shelton
Silverdale

Browse thousands of different options on Cheapflights for your next trip

Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.

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 January 23, 2025.
AirlineCheapestAverageFlexibilityOn-time
Alaska AirlinesCheapest$148Average$251FlexibilityNo cancel feeOn-time75%
DeltaCheapest$246Average$496FlexibilityNo cancel feeOn-timeN/A
100% Free
Cheapflights is completely free to use, so you can start saving the moment you arrive.
Book with Flexibility
Our users can plan ahead with confidence and find flights with no change fees
Travel Smart
Millions of people come to us for their flight needs every year. We help make travel planning easy by providing useful insights and data-driven graphs that can inform your decisions.