Taipei to Phnom Penh is 1,422 miles (2,288 km), a flight of about 3 hours.
Left seats capture the most distinctive geography: the Taiwan Strait departure (though right is better for takeoff), the entire Tonlé Sap Lake approach which is Cambodia's defining hydrological feature, and the Cardamom Mountains. The landing view outweighs the takeoff advantage on the right.
Flight Path
The flight path crosses the Gulf of Thailand at cruising altitude. Notable features include: the Thai-Cambodian border region with the Dangrek Mountains visible as a faint ridge line on the southern horizon during cruise; the Tonlé Sap River valley becoming visible during descent; and the transition from open water (Gulf) to the extensive floodplain and lake system of central Cambodia. The Mekong River's main channel is visible during final approach, running north-south through Phnom Penh.
Great circle distance and headings ›Phase by phase

Takeoff from TPE
RIGHTTPE typically departs eastbound (Runways 05L/05R) over the Taiwan Strait. Right-side seats face northwest toward the Strait and northern Taiwan's coastal plains, while left seats look inland toward the Central Mountain Range. The strait crossing offers more dynamic water and shipping traffic views.
Landing at PNH
LEFTPNH typically lands westbound (Runway 03) over the Tonlé Sap Lake region. Left-side seats face south toward the lake's northern shore and the Cardamom Mountains beyond, providing views of Cambodia's largest freshwater body and surrounding floodplain landscape. Right seats face north toward the Mekong River valley.
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About This Route
Which side of the plane should I sit on flying from Chiang Kai Shek International (TPE) to Pochentong International (PNH)?
Sit on the Left side of the plane for the best views on flights from Taipei to Phnom Penh. Left seats capture the most distinctive geography: the Taiwan Strait departure (though right is better for takeoff), the entire Tonlé Sap Lake approach which is Cambodia's defining hydrological feature, and the Cardamom Mountains. The landing view outweighs the takeoff advantage on the right.
What can I see during takeoff from Chiang Kai Shek International in Taipei?
During takeoff from Chiang Kai Shek International (TPE), sit on the Right side for the best views. TPE typically departs eastbound (Runways 05L/05R) over the Taiwan Strait. Right-side seats face northwest toward the Strait and northern Taiwan's coastal plains, while left seats look inland toward the Central Mountain Range. The strait crossing offers more dynamic water and shipping traffic views. Notable sights include: Taiwan Strait (immediate foreground), northern Taiwan coastal plains and Taipei Basin (left side receding), Yangmingshan volcanic peaks (inland, left horizon), Keelung harbor area (northeast, visible as developed coastline).
What can I see when landing at Pochentong International in Phnom Penh?
When landing at Pochentong International (PNH), sit on the Left side for the best views. PNH typically lands westbound (Runway 03) over the Tonlé Sap Lake region. Left-side seats face south toward the lake's northern shore and the Cardamom Mountains beyond, providing views of Cambodia's largest freshwater body and surrounding floodplain landscape. Right seats face north toward the Mekong River valley. Notable sights include: Tonlé Sap Lake (dominant feature, extensive shallow water body), Cardamom Mountains (southern horizon, dark forested ridgeline), Mekong River floodplain (right side, visible as agricultural grid and waterways), Phnom Penh urban area (approaching from north, visible as developed zone on river).
How long is the flight from Taipei to Phnom Penh?
The flight from Chiang Kai Shek International (TPE) to Pochentong International (PNH) takes about 3 hours. The shortest flight path between them is 1,422 miles (2,288 km); winds and air traffic control usually add a few percent.
What does the Taipei to Phnom Penh flight path pass over?
The flight path crosses the Gulf of Thailand at cruising altitude. Notable features include: the Thai-Cambodian border region with the Dangrek Mountains visible as a faint ridge line on the southern horizon during cruise; the Tonlé Sap River valley becoming visible during descent; and the transition from open water (Gulf) to the extensive floodplain and lake system of central Cambodia. The Mekong River's main channel is visible during final approach, running north-south through Phnom Penh.