What is the flight distance between SEA and HLN?

Distance between Seattle/Tacoma International Airport (SEA) and Helena Airport (HLN) is 788 kilometers or 490 miles.

Distance From Seattle/Tacoma International Airport to Helena Airport (SEA - HLN Distance)

Q: How long is the flight from SEA to HLN?

Flight time from Seattle/Tacoma International Airport, Seattle, United States to Helena Airport, Helena, United States is 0 hours 58 minutes under avarage conditions.

Q: What is the time difference between Seattle, United States and Helena, United States?

Time difference between Seattle (United States) and Helena (United States) is 0 Hours. It is currently 15:03 in Seattle/Tacoma International Airport (SEA) and 15:03 in Helena Airport (HLN).

The flight distance from Seattle/Tacoma International Airport (SEA) to Helena Airport (HLN) is 490 miles. This is equivalent to 788 kilometers or 426 nautical miles. The distance shown below is the straight line distance (may be called as flying or air distance) or direct flight distance between airports.

788 kilometers is the distance from Seattle/Tacoma International Airport, United States to Helena Airport, United States.

Flight Duration between Seattle, United States and Helena, United States

Estimated flight time from Seattle/Tacoma International Airport, Seattle, United States to Helena Airport, Helena, United States is 0 hours 58 minutes under avarage conditions. The flight time calculator assumes an average flight speed for a commercial airliner of 500 mph, which is equivalent to 805 km/hr or 434 knots. Your actual flying time may vary depending on wind speeds or weather conditions.

Time Difference Between the Airports • SEA - HLN

Time difference between Seattle (United States) and Helena (United States) is 0 Hours.
Current local time in Seattle is 2025-09-18, 15:03:36 MDT and time in Helena is 2025-09-18, 15:03:36 MDT.

Seattle/Tacoma International Airport to Helena Airport Flight Route Map - SEA to HLN Flight Path

Location of Seattle/Tacoma International Airport & Helena Airport is given below.
Click the map to view Seattle to Helena nonstop flight path and travel direction.

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Click to see flight route on Google Map between Seattle, United States and Helena, United States. .

Nonstop flight route between Seattle, United States and Helena, United States.

Seattle/Tacoma International Airport
City:	Seattle
Country:	United States
IATA Code:	SEA
ICAO Code:	KSEA
GPS Coordinates:	Latitude: N 47° 26' 56.4'' Longitude: W 122° 18' 33.5''
Current time:	2025-09-18, 15:03:36 MDT
Current weather:	Seattle/Tacoma International Airport 15 day weather forecast

Helena Airport
City:	Helena
Country:	United States
IATA Code:	HLN
ICAO Code:	KHLN
GPS Coordinates:	Latitude: N 46° 36' 24.5'' Longitude: W 111° 58' 57.9''
Current time:	2025-09-18, 15:03:36 MDT
Current weather:	Helena Airport 15 day weather forecast
Flights: