HelenaSeattleDirect FlightsHLN–SEA
Helena (Helena Regional Airport) to Seattle (Seattle-Tacoma International Airport).
Flight time from HLN to SEA is estimated at about 1h 36m, based on the 490-mile great-circle distance. Our current captured departure sample includes 1/day across 1 captured airline, with Alaska Airlines appearing most often in that sample.
Plan this routeAt a glance
| Est. flight time | Distance | Captured freq. | Type |
|---|---|---|---|
| ~1h 36m Estimated from great-circle distance — no tracked flights yet. | 490 mi | 1/day From the current provider sample; confirm live timetables before booking. | Domestic |
Airlines on this route
Captured airlines for HLN to SEA
Our current provider sample includes 1/day from HLN to SEA across 1 captured airline.
| Airline | Captured daily freq. | Aircraft | Departures (local) |
|---|---|---|---|
| Alaska Airlines | 1/day | Embraer E-Jet | — |
Aircraft on this route
Flying the other way?
SEA to HLN flights — 1/day on 1 airline →Methodology: airline, aircraft, terminal, and departure-time details come from the rolling scheduled-departures window for HLN to SEA, last seen June 15, 2026. Frequency uses 7 scheduled departures across 7 observed days; flight time is estimated from great-circle distance until this route has enough tracked flights for an observed average. Provider coverage can miss operators on some routes, so confirm live timetables before booking.
Route FAQ
How long is the flight from HLN to SEA?
The HLN to SEA flight time is estimated at about 1h 36m from great-circle distance until enough tracked flights are available.
How far is HLN from SEA?
HLN to SEA is about 490 miles by air.
Which airlines fly from HLN to SEA?
Our current provider sample for HLN to SEA includes Alaska Airlines. Confirm live timetables before booking.
What aircraft fly from HLN to SEA?
Aircraft captured in our current provider sample for HLN to SEA include Embraer E-Jet.