Cheap flights from Washington, D.C. to Kathmandu from $611
This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Washington, D.C. to Kathmandu departing on 12/31. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
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Route
Depart
Return
Washington, D.C.Kathmandu
IAD Washington, D.C. Dulles Intl - KTM Kathmandu Tribhuvan
IADKTM
Washington, D.C. Dulles Intl
Sun 10/25
6:50 pm-4:10 pm
3 stops35h 35m
Kathmandu Tribhuvan
Sun 11/8
3:00 pm-2:45 pm
2 stops34h 30m
Washington, D.C.Kathmandu
IAD Washington, D.C. Dulles Intl - KTM Kathmandu Tribhuvan
IADKTM
Washington, D.C. Dulles Intl
Sun 11/15
10:30 am-9:40 am
1 stop36h 25m
Kathmandu Tribhuvan
Sun 12/13
1:45 pm-8:10 am
2 stops53h 10m
Washington, D.C.Kathmandu
IAD Washington, D.C. Dulles Intl - KTM Kathmandu Tribhuvan
IADKTM
Washington, D.C. Dulles Intl
Thu 2/25
1:30 pm-11:20 am
1 stop35h 05m
Kathmandu Tribhuvan
Thu 6/17
7:40 am-11:30 am
1 stop37h 35m
Washington, D.C.Kathmandu
IAD Washington, D.C. Dulles Intl - KTM Kathmandu Tribhuvan
IADKTM
Washington, D.C. Dulles Intl
Thu 2/18
9:20 pm-11:20 am
1 stop27h 15m
Kathmandu Tribhuvan
Thu 5/27
7:40 am-11:30 am
1 stop37h 35m
Washington, D.C.Kathmandu
IAD Washington, D.C. Dulles Intl - KTM Kathmandu Tribhuvan
IADKTM
Washington, D.C. Dulles Intl
Mon 10/26
9:05 pm-8:20 am
1 stop25h 30m
Kathmandu Tribhuvan
Thu 4/1
6:00 pm-8:45 am
1 stop24h 30m
Washington, D.C.Kathmandu
IAD Washington, D.C. Dulles Intl - KTM Kathmandu Tribhuvan
IADKTM
Washington, D.C. Dulles Intl
Sun 10/18
9:00 pm-4:15 pm
1 stop33h 30m
Kathmandu Tribhuvan
Wed 3/31
6:00 pm-3:40 pm
1 stop31h 25m
Washington, D.C.Kathmandu
IAD Washington, D.C. Dulles Intl - KTM Kathmandu Tribhuvan
IADKTM
Washington, D.C. Dulles Intl
Mon 10/26
11:15 am-11:30 pm
1 stop26h 30m
Kathmandu Tribhuvan
Mon 11/2
7:35 am-8:10 am
1 stop35h 20m
Washington, D.C.Kathmandu
IAD Washington, D.C. Dulles Intl - KTM Kathmandu Tribhuvan
IADKTM
Washington, D.C. Dulles Intl
Mon 10/26
11:15 am-11:30 pm
1 stop26h 30m
Kathmandu Tribhuvan
Mon 11/2
7:35 am-8:10 am
1 stop35h 20m
Washington, D.C.Kathmandu
IAD Washington, D.C. Dulles Intl - KTM Kathmandu Tribhuvan
IADKTM
Washington, D.C. Dulles Intl
Tue 2/2
5:25 pm-6:35 am
2 stops26h 25m
Kathmandu Tribhuvan
Tue 3/2
9:40 pm-3:30 pm
2 stops28h 35m
Washington, D.C.Kathmandu
IAD Washington, D.C. Dulles Intl - KTM Kathmandu Tribhuvan
IADKTM
Washington, D.C. Dulles Intl
Tue 2/23
10:10 pm-6:35 am
3 stops45h 40m
Kathmandu Tribhuvan
Tue 3/23
9:40 pm-3:30 pm
2 stops27h 35m
See travel insights to Kathmandu from
How to get the cheapest flight ticket from Washington, D.C. to Kathmandu
Look no further. We've gone through all the searches for this route on momondo so you have the important information and insights to find the cheapest flight ticket for your trip
What is the typical price of a round-trip flight between Washington, D.C. and Kathmandu?
Prices are currently low for flights on this route.
Typical prices usually range from $1,390 to $1,593.The lowest price recently found on this route was $1,232.
What is the cheapest month to fly to Kathmandu?
The month of February is another great option to travel to Kathmandu, with average flight prices from Washington, D.C. averaging around $1,342.
How far in advance should I book a flight from Washington, D.C. to Kathmandu?
You are more likely to see cheaper flights to Kathmandu from Washington, D.C. when booking weeks ahead of your departure date. In general, you can expect to find flights to Kathmandu for around $1,505 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Kathmandu from Washington, D.C. for as low as $1,386 on momondo.
Can stopping save me money on Washington, D.C. to Kathmandu flights?
You could potentially save up to 17% on your flight if you consider stops on a Washington, D.C. to Kathmandu flight.
How have Washington, D.C. to Kathmandu flight prices changed over time?
As of October 2026, prices for Washington, D.C. to Kathmandu flights are approximately 28% more expensive when compared to flights at the same time last year.
What is the cheapest airline that flies from Washington, D.C. to Kathmandu Tribhuvan?
Air India, Qatar Airways, and Etihad Airways are the most popular carriers operating from Washington, D.C. to Kathmandu Tribhuvan
What airlines fly to Kathmandu?
Qatar Airways, Turkish Airlines and Emirates are the top three most popular airlines that fly to Kathmandu from Washington, D.C. according to our data. Qatar Airways is the first choice among our users, with 65% of people opting to fly with this airline when traveling to Kathmandu. Keep in mind that there are 6 different airlines that fly to Kathmandu on a routine basis, so you have a few additional options to choose from.
Which airport is the most popular layover for flights between Washington, D.C. and Kathmandu?
Doha (DOH) was the most common stop: 78% of momondo users choosing 1-stop flights on this route connected there.
Which layover airport offers the lowest fares from Washington, D.C. to Kathmandu?
Flights via Abu Dhabi (AUH) offer the lowest average round-trip price of $1,192.
Which layover airport has the shortest travel time from Washington, D.C. to Kathmandu?
Flights connecting via Kuwait City (KWI) have the shortest average one-way travel time: 20h 05m.
Which layover airport has the shortest connection time from Washington, D.C. to Kathmandu?
Kuwait City (KWI) has the shortest average layover time for this route: 3h 18m.
When to book flights from Washington, D.C. to Kathmandu
Cheap Washington, D.C. to Kathmandu (WAS to KTM) flight deals and tips
Find info about flight duration, direct flights, and airports for your flight from Washington, D.C. to Kathmandu
Frequently asked questions about flying from Washington, D.C. to Kathmandu
How far is Washington, D.C. to Kathmandu Tribhuvan by plane?
A flight from Washington, D.C. to Kathmandu Tribhuvan will travel around 7689.5 mi. A reasonable flight in good conditions will take 22h 15m.
When did momondo last update prices for flights from Washington, D.C. to Kathmandu Tribhuvan Airport?
Prices for flights from Washington, D.C. to Kathmandu Tribhuvan Airport were last updated today.
How many operators does momondo search for flights from Washington, D.C. to Kathmandu Tribhuvan Airport?
There are 6 operators available for flights from Washington, D.C. to Kathmandu Tribhuvan Airport as of October 2026.
How old do you have to be to fly from Washington, D.C. to Kathmandu Tribhuvan Airport?
The minimum age for a child to fly alone is five, but airlines that offer an unaccompanied minor (UNMR) service may have their own age limitations. Flight duration, scheduling, and layovers are among the considerations that may influence age limits. We recommend that you double-check with the airline you are booking with for travel from Washington, D.C. to Kathmandu Tribhuvan Airport.
What documentation or ID do you need to fly to Kathmandu Tribhuvan Airport?
The required travel and health documents for your Kathmandu Tribhuvan Airport trip may vary depending on your itinerary and personal circumstances. As a general rule, you should carry multiple documents, including a national ID card or driver's license and a passport valid for six months after your intended arrival at Kathmandu Tribhuvan Airport. We recommend that you seek guidance from your airline or a reliable third party such as IATA.
What is the most popular airline from Washington, D.C. to Kathmandu?
momondo data reveals that the most frequently booked airline on the route from Washington, D.C. to Kathmandu is Qatar Airways, representing 57% of all bookings. The subsequent popular airlines are Emirates at 18%, Turkish Airlines at 17%, and Etihad Airways at 3%.
Best airlines flying from Washington, D.C. to Kathmandu
Compare and see reviews for airlines that fly from Washington, D.C. to Kathmandu with momondo
| Airline | Rating | Free Cancellation | Price | ||
|---|---|---|---|---|---|
| PriceFrom $489 | Free Cancellation | Rating 6.8 579 reviews | |||
| PriceFrom $1,057 | Free Cancellation | Rating 7.4 4,452 reviews | |||
| PriceFrom $1,108 | Free Cancellation | Rating 7.3 1,538 reviews | |||
| PriceFrom $1,163 | Free Cancellation | Rating 8.1 3,667 reviews | |||
| PriceFrom $1,216 | Free Cancellation | Rating 7.3 3,728 reviews | |||
| PriceFrom $1,638 | Free Cancellation | Rating 7.5 2,084 reviews |
Traveling to a place near Kathmandu?
Book flights to Kathmandu if you plan to visit one of these locationsWhy use momondo?
Why should I use momondo to find a flight deal from Washington, D.C. to Kathmandu?
Finding the right flight to Kathmandu from Washington, D.C. is quick and easy when you have a range of options in front of you, from reputable agents and recognisable airlines. Options that can then be filtered down to find the best fit. That is what momondo does. We make finding flights to Kathmandu quick and easy, saving you time and money.
Can I find flights from Washington, D.C. to Kathmandu with flexible booking policies on momondo?
Yes. All flights to Kathmandu from Washington, D.C. on momondo can be compared and filtered by various policies on offer, including flexible booking.
How can momondo help me find flights from Washington, D.C. to Kathmandu?
momondo provides multiple filters to help you find the best flight to Kathmandu from Washington, D.C.. Filter by price, airline, airports, cabin, aircraft, payment method, number of stops and more.
I’m not ready to book a flight from Washington, D.C. to Kathmandu right now. Can momondo alert me if prices change?
Price alerts on flights to Kathmandu from Washington, D.C. are quick and easy to set up on momondo. Simply perform a search and select the price alert feature. It is as simple as that.