HLN - SEA
$227 - $337
|Popular in||March||High demand for flights, 18% potential price rise|
|Cheapest in||October||Best time to find cheap flights, 17% potential price drop|
|Round-trip from||$227||From Helena to Seattle-Tacoma International|
|One-way from||$88||One-way flight from Helena to Seattle-Tacoma International|
It’s generally more expensive to depart on a Sunday, if you have to leave on this day you can still search on Cheapflights to find great options that meet your needs.
Find a great deal and save up to 58% by booking at least 27 days prior to your desired departure date, rather than waiting until the week of travel. According to our data, there are a number of flights available from Helena to Seattle-Tacoma International within the next two weeks, with the cheapest ticket starting at $136.
A simple way to save on the total cost of your ticket is to fly from Helena to Seattle-Tacoma International in the evening. If you’re flexible enough to do this you can expect to save up to 56% on your trip compared to booking a flight at noon.
|Afternoon Noon to 6 PM||100% of HLN to SEA departures|
|Early morning Midnight to 6 AM||0% of HLN to SEA departures|
|Morning 6 AM to noon||0% of HLN to SEA departures|
|Evening 6 PM to midnight||0% of HLN to SEA departures|