Distance From Hermiston Municipal Airport to Chiang Mai International Airport, HES - CNX Distance

The distance from Hermiston Municipal Airport (HES) to Chiang Mai International Airport (CNX) is 7373 miles or 11866 kilometers or 6403 nautical miles.

The distance shown below is direct flight distance between airports. Straight-line distance does not account for the surface between the two points. It is the distance a bird or airplane would travel between the two points when flying above the surface. The straight line distance is the direct route between two points, regardless of whether or not there are roads that connect them.

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How long does it take to travel from Hermiston ( United States ) to Chiang Mai ( Thailand )?

A one-way nonstop (direct) flight between Hermiston and Chiang Mai takes around 16 hours 57 minutes.

Estimated flight time from Hermiston Municipal Airport, Hermiston, United States to Chiang Mai International Airport, Chiang Mai, Thailand is 16 hours 57 minutes under avarage conditions. Your actual flying time may vary depending on wind direction/speed or weather conditions. This calculation does not include the departure and landing times of the aircraft. In addition, it does not cover the person identity check, ticket check-in and baggage collection times at the airport.

Travel Distance Between the Airports • HES - CNX

Kilometers		11866 km
Statute Miles		7373 miles
Nautical Miles		6403 nm
Avg. Time of Flight		16 hours 57 minutes

Hermiston Municipal Airport to Chiang Mai International Airport Flight Route Map - HES to CNX Flight Path

Location of Hermiston Municipal Airport & Chiang Mai International Airport is given below.
Click the map to view Hermiston to Chiang Mai nonstop flight path and travel direction.

Click to see flight route on Google Map between Hermiston, United States and Chiang Mai, Thailand. .

Nonstop flight route between Hermiston, United States and Chiang Mai, Thailand.

Time Difference Between the Airports • HES - CNX

Time difference between Hermiston (United States) and Chiang Mai (Thailand) is 14 Hours.
Chiang Mai time is 14 Hours ahead of Hermiston.

Location	Local Time
Hermiston (United States)	2025-12-15, 21:07:43 MST
Chiang Mai (Thailand)	2025-12-16, 11:07:43 +07

Why should you arrive 3 hours before international flight? Flyers who are traveling to an international destination should arrive at the airport earlier than domestic flyers. This is because international flights can have additional check-in requirements, like passport verification, that need to be completed before you receive your boarding pass.

Origin

Hermiston Municipal Airport (HES / KHRI) Hermiston, United States

Destination

Chiang Mai International Airport (CNX / VTCC) Chiang Mai, Thailand