Cheap Flights from Rajbiraj to Kathmandu

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Find the cheapest month to fly from Rajbiraj to Kathmandu

We’re always keeping an eye on fares, so you can find the best one in seconds. It looks like Rajbiraj to Kathmandu flights are currently cheapest in July.

Direct flights from Rajbiraj to Kathmandu

Rajbiraj to Kathmandu: Alternative routes

Compare routes from Rajbiraj to Kathmandu below. You may find an airport to fly into that's cheaper, faster, or easier than Kathmandu.

Rajbiraj to Kathmandu: Flight information

The things to know before you go.
Cheapest flight foundRs38,028
Cheapest month to flyJuly
Average flight time35 mins
Most popular airlineBuddha Air
Average flights per week16

Finding cheap flights from Rajbiraj to Kathmandu: Frequently asked questions

The best price we found for a return flight from Rajbiraj to Kathmandu is Rs76,901. This is an estimate based on information collected from different airlines and travel providers over the last 4 days and is subject to change and availability.
35 minutes is the average flight time from Rajbiraj to Kathmandu.
Buddha Air and Hahn Air Systems fly direct from Rajbiraj to Kathmandu.
As of July 2025, there are 16 flights per week flying from Rajbiraj to Kathmandu.
The cheapest month to fly from Rajbiraj to Kathmandu is usually August.
After crunching the numbers on our flight calendar, we found that it's currently cheapest to fly from Rajbiraj Airport to Kathmandu Airport on Thursday, 7 August 2025.
Yes – the average flight time is 35 minutes.
We show every price from over 1,200 airlines and travel agents, comparing them all so you don’t have to. If you know you want to fly to Kathmandu but you’re not ready to book, set up a Price Alert. We’ll track prices for you, and let you know when they rise or fall.
We crunched all the numbers in our flight calendar and it looks like the cheapest time to book a flight to Kathmandu is around 40 days in advance, so don’t leave your flight to the last minute.
Currently, Buddha Air offers the cheapest flight tickets to Kathmandu.

Flying from Rajbiraj Airport (RJB) to Tribhuvan International Airport (KTM): what you need to know

  • The average length of a direct flight from Rajbiraj Airport to Tribhuvan International Airport is 30 minutes.

  • Rajbiraj and Kathmandu are both in the UTC+5:47 timezone. This means there's no time difference to adjust for.

  • Every week, there are seven Rajbiraj Airport to Tribhuvan International Airport flights. If you prefer to get going as soon as possible, select the 13:50 Buddha Air flight. If you'd rather make the most of your day before flying, the last departure is at 13:50 with Buddha Air.

  • For a stress-free journey, turn up at the airport two hours ahead of international flights and one hour before domestic departures. This ensures you have enough time to catch your RJB to KTM flight.

  • Be prepared for longer lines in popular months such as May. Arriving up to four hours in advance for international flights and two hours for domestic departures is a smart move.

  • Getting to Kathmandu (and then seeing more of Nepal!) is a cinch with Buddha Air. This popular airline offers direct flights from Rajbiraj Airport to Tribhuvan International Airport.

  • Most passengers choose to travel with Buddha Air on this route.

How to find the cheapest flights from Rajbiraj Airport (RJB) to Tribhuvan International Airport (KTM)

  • The lowest price we've found for a one-way Rajbiraj Airport to Tribhuvan International Airport flight is Rs38,028. A return plane ticket is currently Rs76,901. Depending on the availability when you book, these fares may change.

  • Book six months before you want to fly. After looking at the numbers on our calendar, this is how far you should book ahead to secure cheap tickets from RJB to KTM.

  • Organise your trip for May. That's the cheapest month for flights from Rajbiraj Airport to Tribhuvan International Airport. If your travel dates are flexible, use the 'Whole month' tool to see the cheapest airfare across every month.

  • Snapping up cheap flights from RJB to KTM is easy with Price Alerts. All you need to do is create one of these automatic alerts and we'll get in touch when fares go down.

  • Select your ideal departure and arrival times, number of stops and airlines with the filters. Or sort your results by 'Cheapest' to get the best deals on flights from Rajbiraj Airport to Tribhuvan International Airport.

Handy information about Rajbiraj Airport (RJB)

  • To reach Rajbiraj Airport from central Rajbiraj, it takes around 10 minutes by car. Of course, this depends on traffic conditions. It's approximately 6 kilometres from the airport to the city centre.

Arriving at Tribhuvan International Airport (KTM)

  • If you're coming in on a late Rajbiraj Airport to Tribhuvan International Airport flight, nothing tops the convenience of being close to the terminal. Grab your suitcases from the carousel and then be showered and sleeping soon after at one of these hotels near KTM:

  • Grab a Tribhuvan International Airport rental car and explore corners of Kathmandu that are off the usual tourist route. Find your ideal set of wheels with Spark Car.

  • Lock in the best deal by booking your ride from Tribhuvan International Airport around one week before your departure date.

Getting from Tribhuvan International Airport (KTM) to central Kathmandu

  • Tribhuvan International Airport to the centre of Kathmandu has a drive time of around 15 minutes. It's approximately 5 kilometres away.

When to fly to Tribhuvan International Airport (KTM)

  • September is the most popular month for flights from Rajbiraj Airport to Tribhuvan International Airport. For a quieter experience, visit Kathmandu in February.

  • Lock in your flight from Rajbiraj Airport to Tribhuvan International Airport for June if you'd like to explore Kathmandu during its warmest month. Expect temperatures of between 17ºC and 28ºC.

  • Look for cheap tickets from RJB to KTM in January if you want to travel in cooler conditions. Temperatures are at their lowest then, ranging between 3ºC and 18ºC on average.

Explore more of Nepal

  • Kathmandu has plenty to offer, but there are so many other parts of Nepal just waiting to be discovered. About 145 kilometres north-west of Kathmandu, a visit to Pokhara will keep your itinerary busy. Start with popular sights like Phewa Lake, Sarangkot and Gupteshwor Mahadev Cave.

  • If you're interested in discovering another side of Nepal, consider Patan, about 6 kilometres south of Kathmandu. Aspur Agro Farm, Pimbahaa Pukhoo and Rajib Handicraft are key reasons to visit.

Prices shown on this page are estimated lowest prices only. Found in the last 45 days.