Sit on the Right side of the plane for the best views on flights from Colombo to Kathmandu. The takeoff view from CMB is more visually distinctive—the transition from ocean to highlands is dramatic and sustained. The landing into KTM is excellent but brief; the valley and mountains dominate only in the final 20 minutes. Right seats capture the longer, more varied sequence of coastal and inland geography.

During takeoff from Bandaranaike International (CMB), sit on the Right side for the best views. CMB typically departs eastbound (Runway 04). Right-side seats face north toward the Indian Ocean coast and the Western Ghats escarpment. You'll see the Colombo coastline receding and the island's central highlands rising inland. Notable sights include: Indian Ocean (immediate offshore), Colombo city grid and harbor (below), Western Ghats mountain range (distant inland horizon), Sri Lankan central highlands (rising terrain to the northeast).

When landing at Tribhuvan International (KTM), sit on the Left side for the best views. KTM approaches from the south (Runway 02). Left-side seats face east and northeast during descent into the Kathmandu Valley. You'll see the Himalayan foothills rising dramatically and the valley floor with Kathmandu city nestled within. Notable sights include: Kathmandu Valley (the broad, flat basin), Himalayan foothills and ridges (surrounding the valley on three sides), Kathmandu city (urban sprawl on the valley floor), Mahabharat Range (the inner foothills immediately adjacent to the valley).

The flight from Bandaranaike International (CMB) to Tribhuvan International (KTM) takes Approximately 2 hours 45 minutes to 3 hours 15 minutes.

The flight path crosses the Bay of Bengal and enters Indian airspace over the eastern coast (Odisha region). You'll pass over the Indo-Gangetic Plain—flat, hazy agricultural terrain. As you approach Nepal, the terrain rises progressively: first the Siwalik foothills (low, forested ridges), then the Mahabharat Range, and finally the Himalayan wall. The Ganges River valley is visible as a broad, meandering feature in the northern Indian plains. On clear days, major Himalayan peaks including Makalu and Everest may be visible on the horizon during the final approach to KTM, though they are distant and small.