SeattleHelenaNonstop Flight TimeSEA–HLN
Seattle (Seattle-Tacoma International Airport) to Helena (Helena Regional Airport).
Direct flights from SEA to HLN have an estimated flight time of 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. Captured departure times run from 13:30 to 13:57 local time.
Plan this routeAt a glance
| Est. flight time | Distance | Route type | Captured freq. | Market |
|---|---|---|---|---|
| ~1h 36m Estimated from great-circle distance — no tracked flights yet. | 490 mi | Nonstop | 1/day From the current provider sample; confirm live timetables before booking. | Domestic |
Airlines on this route
Captured nonstop airlines for SEA to HLN
Our current provider sample includes 1/day direct flights from SEA to HLN across 1 captured airline.
- First departure
- 13:30
- Last departure
- 13:57
- Cadence
- ~every 30 min
- Captured departures/day
- 2
| Airline | Captured daily freq. | Aircraft | Departures (local) |
|---|---|---|---|
| Alaska Airlines | 1/day | Embraer E-Jet | 13:3013:57 |
Aircraft on this route
Flying the other way?
HLN to SEA flights — 1/day on 1 airline →Methodology: airline, aircraft, terminal, and departure-time details come from the rolling scheduled-departures window for SEA to HLN, 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 SEA to HLN?
The SEA to HLN flight time is estimated at about 1h 36m from great-circle distance until enough tracked flights are available.
How far is SEA from HLN?
SEA to HLN is about 490 miles by air.
Are there nonstop flights from SEA to HLN?
Yes. Captured schedules show 1/day from SEA to HLN on Alaska Airlines. Confirm live timetables before booking.
Which airlines fly from SEA to HLN?
Our current provider sample for SEA to HLN includes Alaska Airlines. Confirm live timetables before booking.
What aircraft fly from SEA to HLN?
Aircraft captured in our current provider sample for SEA to HLN include Embraer E-Jet.