฿5,552 Find Cheap Flights from Bangkok to Kathmandu – Compare and Save

Among airlines operating Bangkok to Kathmandu flights:

• Thai Airways: offers free seat selection
• Thai Lion Air: offers free seat selection
• Nepal Airlines: offers free seat selection

Extra legroom and free seat selection availability depends on fare class and route.

4 airlines operate flights between Bangkok and Kathmandu. The airlines offering direct flights on this route include:

• Thai Airways
• Thai Lion Air
• Nepal Airlines
• Himalaya Airlines

Flights from Bangkok to Kathmandu may depart from several airports in Bangkok area, including Bangkok Suvarnabhumi (BKK) and Bangkok Don Mueang Intl (DMK). Flights usually arrive at Kathmandu Tribhuvan (KTM).

Here are some options for this route, based on selected ticket types and cabin classes:

• Thai Airways: a cabin bag and a checked bag in Economy class
• Thai Lion Air: a cabin bag and a checked bag in Economy class
• Nepal Airlines: a cabin bag and a checked bag in Economy class

Bag allowance can vary by ticket type, cabin class, route, and airline, so travellers should check the fare details before booking.

Two cabin classes are available on flights from Bangkok to Kathmandu:

• Economy class
• Business Class

On this route, direct flights are cheaper than stopover options on average. Direct fares average ฿10,471 return, compared with ฿13,779 via a stopover through Kuala Lumpur Intl (KUL).

There is no standard. Checked bag policies vary by airline on this route. Most carriers charge ฿697–฿3,304 for the first checked bag in Economy. Premium fares and elite status bookings typically include a free checked bag.

Connecting flights from Bangkok to Kathmandu most commonly pass through:

• New Delhi Indira Gandhi Intl (DEL) – 89% of one-stop connections
• Kuala Lumpur Intl (KUL) – 11% of one-stop connections
Together, these airports account for 100% of one-stop bookings on this route.

Yes. Being flexible with your travel dates can save you up to 10% on the Bangkok to Kathmandu route. Monday is the cheapest departure day at ฿10,971 return on average, while Friday is the most expensive at ฿12,128, a difference of ฿1,157. KAYAK's flexible dates feature shows options up to 3 days before and after your selected dates, making it easier to compare nearby fares.

A flight is considered delayed when it departs 15 minutes or more after its scheduled time. This is the standard used by the US Department of Transportation and most airline industry reporting. On the Bangkok to Kathmandu route, 28% of flights were delayed in the past 3 months, with delays averaging 1 hour 41 minutes.

Morning is the busiest departure period on Bangkok to Kathmandu flights, with 34% leaving in that window. Afternoon departures account for 33%, Night flights for 33%, and Evening flights for 0%.

These are the earliest and latest flight times available from Bangkok to Kathmandu:

• Earliest: departs at 10:15 and lands at 13:40
• Latest: departs at 21:15 and lands at 00:40.

The flight takes about 3h 25m.

Last-minute fares on this route (booked within 2 weeks of departure) run 16% above the route average of ฿10,540. Book 23 weeks before departure for the lowest fares.

A direct flight from Bangkok to Kathmandu takes 3h 25m, covering 3,550 km.

Yes, a valid passport is required for this international route. Many destinations require at least six months of validity beyond your travel dates. Check your passport expiry well before booking.

Yes. Based on fares seen in the past 5 days, return flight prices on this route showed a wide range, from about ฿12,062 to ฿82,358. That means the highest observed fare was about 7x higher than the lowest one.

One-way fares from Bangkok to Kathmandu are currently higher than usual. Average one-way flight prices are about ฿7,121, which is 46% above the typical average for this route.

Thai Airways is slightly above the route average for timely arrivals, while Thai Lion Air has a lower on-time arrival rate. On-time arrival rates on Bangkok to Kathmandu flights are:

• Thai Airways: 81% on time
• Thai Lion Air: 58% on time
• Nepal Airlines: 34% on time

On average, flights on this route are punctual 72% of the time.

Evening flights have the fewest delays on this route. Delays tend to pile up throughout the day as one late flight pushes the next, so earlier departures are usually more reliable.

Flying via Kuala Lumpur Intl (KUL) gives the shortest average 1-stop total travel time of 9h 46m, compared to 11h 48m via New Delhi Indira Gandhi Intl (DEL).

Kathmandu is 1 hour behind Bangkok (Nepal Time vs Indochina Time). Plan for the time shift when scheduling connections or first-day activities.

Return flights from Bangkok to Kathmandu range from ฿8,320 to ฿14,419, with an average of ฿10,540 over the past 12 months. Anything below ฿8,320 counts as a good deal.