Direct (non-stop) flights from Helena (HLN) to SeaTac (SEA)
Find comprehensive flight information, schedules, and booking details for direct flights from Helena (HLN) to SeaTac (SEA). This popular route is operated by 1 airline, offering multiple daily departures.• Flight Duration: 1h 41m - 1h 59m (average flight time)• Distance: 492 miles (792 km) (air miles between airports)• Daily Flights: 0-1 flights (scheduled departures per day)
Helena (HLN)
SeaTac (SEA)
FLIGHT TIME
1h 41m - 1h 59m
FLIGHT DISTANCE
492 miles (792 km)
1h 55m - 1h 55m
19:32
19:32
492 miles (792 km)
January
1 (Show)
6
Flight Schedule
December 2025
Airlines with direct flights from Helena (HLN) to SeaTac (SEA)
Route Insights
Pricing patterns: January typically offers lower prices due to reduced demand outside peak travel seasons.
Best departure times: Peak departure times are 19:00, offering more flight options and potentially better connections.
Helena (HLN) - SeaTac (SEA) flight price statistics
$344
ApproximateThe numbers are average prices found based on user searches for direct flights between the airports. It's calculated from the cheapest prices found per month for a round-trip with 1 adult and can vary depending on the amount of data we have for this particular route.
$176
Jan$418
Feb$347
Mar$228
Apr$720
May$488
Jun$388
Jul$418
Aug$258
Sep$198
Oct$198
Nov$289
DecRelated Information
Airports: HLN • SEA Airport
Airlines operating this route: Alaska Airlines (AS)
Frequently Asked Questions
How many flights operate from HLN to SEA?
There is 1 direct flight operating from HLN to SEA. Approximately 0-1 flights daily.
Which airlines operate flights from HLN to SEA?
1 airline operates on this route: Alaska Airlines.
How long is the flight from HLN to SEA?
The flight duration from HLN to SEA is approximately 1h 41m - 1h 59m.
What is the distance from HLN to SEA?
The distance from HLN to SEA is 492 miles (792 km).
What is the flight time range for this route?
Flight times on this route range from 1h 55m - 1h 55m.
What are the earliest and latest flight departure times?
The earliest flight departs at 19:32 and the latest flight departs at 19:32.
What is the cheapest month to fly from HLN to SEA?
January is typically the cheapest month to fly on this route.
How many flights operate per week on this route?
Approximately 6 flights operate per week from HLN to SEA.
What types of aircraft operate on this route?
This route is served by Embraer 175.
What is the average flight price from HLN to SEA?
The average flight price for a round-trip ticket from HLN to SEA is approximately $344 USD. Prices can vary based on booking time, season, and airline.
When is the best time to book flights from HLN to SEA for the lowest prices?
January is typically the cheapest month to fly from HLN to SEA. Booking in advance and avoiding peak travel seasons can help you find better deals.
How far is SEA from HLN?
The distance from HLN to SEA is 492 miles (792 km). This is a long-haul flight route.
How long does it take to fly from HLN to SEA?
The flight time from HLN to SEA is approximately 1h 41m - 1h 59m. Actual flight duration may vary based on weather conditions, aircraft type, and routing.