WAS - KTM

$398 Find Cheap Flights from Washington, D.C. to Kathmandu

This is the cheapest one-way flight price found by a KAYAK user in the last 72 hours by searching for a flight from Washington, D.C. to Kathmandu departing on 3/4. Fares are subject to change and may not be available on all flights or dates of travel. Click the price to replicate the search for this deal.
1 adult
1 adult, Economy, 0 bags

KAYAK searches hundreds of travel sites at once for deals on flights to Kathmandu

 
These are the airlines KAYAK users have selected most often from within our search results in flight searches from Washington, D.C. to Kathmandu.
These are the airlines KAYAK users have selected most often from within our search results in flight searches from Washington, D.C. to Kathmandu.
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Everything you should know

Cheapest round-trip
$1,043
Typical prices: $1,330-$1,620
Multiple Airlines
Tue 3/31Wed 4/29
IAD - KTM • 2 stops
Cheapest one-way
$398
Typical prices: $543-$744
Multiple Airlines
Wed 3/4
IAD - KTM • 2 stops
Top airlines
Qatar Airways
Cheapest • from $1,311 (round-trip)
Emirates
Best reviews • 8.1 score
Airline reviews
Airline reviews
+1
+1
Airline reviews
Airline reviews
+1
Top routes
IAD
-
KTM
Cheapest
IAD
-
KTM
Most popular
Insights
Insights
Insights
Insights
When to book
9 weeks
in advance
Our data shows that travelers who book at least 9 weeks in advance save around 12% compared to booking last minute.
Insights
Insights
Insights
Insights
When to travel
October
Cheapest • 12% price drop
June
Most popular
Good to know
Good to know
+1
+1
Good to know
Good to know
+1
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Flight Deals
Booking Insights
Flight Deals

Cheap Flights from Washington, D.C. to Kathmandu (WAS-KTM)

 
Here are some of the best deals found on KAYAK recently from the most popular airlines for round-trip flights from Washington, D.C. to Kathmandu that are departing in the next months. While these flights were available on KAYAK in the last 72 hours, prices and availability are subject to change and deals may expire.
Discover the best prices for you by selecting your travel dates on KAYAK.

Recent round-trip flight deals from Washington, D.C. to Kathmandu

Tue, Mar 31 - Wed, Apr 29
Multiple Airlines Logo
3:10 pm - 11:00 pm
IAD
-
KTM
22h 05m
2 stops
Multiple Airlines Logo
7:35 am - 9:45 am
KTM
-
IAD
35h 55m
2 stops
$1,043Multiple Airlines
Mon, Mar 23 - Tue, Apr 21
Multiple Airlines Logo
3:35 pm - 12:15 am
IAD
-
KTM
22h 55m
2 stops
Multiple Airlines Logo
7:35 am - 9:45 am
KTM
-
IAD
35h 55m
3 stops
$1,044Multiple Airlines
Tue, Mar 3 - Tue, Mar 10
Multiple Airlines Logo
2:35 pm - 12:15 am
IAD
-
KTM
22h 55m
2 stops
Multiple Airlines Logo
5:30 pm - 10:05 am
KTM
-
IAD
26h 20m
2 stops
$1,046Multiple Airlines
Thu, Apr 2 - Sat, May 9
Multiple Airlines Logo
3:10 pm - 11:00 pm
IAD
-
KTM
22h 05m
2 stops
Multiple Airlines Logo
7:35 am - 8:40 am
KTM
-
IAD
34h 50m
2 stops
$1,048Multiple Airlines
Wed, Apr 8 - Wed, Apr 29
Multiple Airlines Logo
3:10 pm - 11:00 pm
IAD
-
KTM
22h 05m
2 stops
Multiple Airlines Logo
6:30 am - 8:40 am
KTM
-
IAD
35h 55m
2 stops
$1,050Multiple Airlines
Mon, Mar 16 - Tue, Apr 7
Multiple Airlines Logo
3:35 pm - 12:15 am
IAD
-
KTM
22h 55m
2 stops
Multiple Airlines Logo
6:30 am - 8:45 am
KTM
-
IAD
36h 00m
3 stops
$1,051Multiple Airlines
Sun, Mar 1 - Sat, May 23
Multiple Airlines Logo
2:35 pm - 12:15 am
IAD
-
KTM
22h 55m
2 stops
Multiple Airlines Logo
5:30 pm - 4:05 pm
KTM
-
IAD
32h 20m
2 stops
$1,052Multiple Airlines
Thu, Mar 19 - Sun, Apr 26
Multiple Airlines Logo
3:35 pm - 12:15 am
IAD
-
KTM
22h 55m
2 stops
Multiple Airlines Logo
7:35 am - 9:45 am
KTM
-
IAD
35h 55m
2 stops
$1,053Multiple Airlines
Tue, Mar 3 - Tue, Mar 10
Qatar Airways Logo
11:53 am - 4:25 pm
BWI
-
KTM
41h 47m
2 stops
Qatar Airways Logo
9:10 am - 12:41 am
KTM
-
BWI
49h 16m
2 stops
$1,311Qatar Airways
Tue, Mar 24 - Thu, Sep 17
Qatar Airways Logo
7:22 pm - 5:50 pm
BWI
-
KTM
36h 43m
2 stops
Qatar Airways Logo
6:00 pm - 11:32 pm
KTM
-
BWI
39h 17m
2 stops
$1,338Qatar Airways
Booking Insights

KAYAK's insights & trends for Washington, D.C. to Kathmandu flights

Get data-powered insights and trends into flights from Washington, D.C. to Kathmandu to help you find the cheapest flights, the best time to fly and much more.

How much is a round-trip flight from Washington, D.C. to Kathmandu?

This analysis is based on the cheapest round-trip price found on KAYAK in the last 12 months by searching for a flight from Washington, D.C. to Kathmandu departing in March.

What is the cheapest Washington, D.C. to Kathmandu flight route?

Data is based on round-trip flight searches on KAYAK over the past month.

The cheapest return flight from Washington, D.C. to Kathmandu costs $1,016 on the route between Washington, D.C. Dulles Intl Airport (IAD) and Kathmandu (KTM). It is also the most popular route.

What is the cheapest month to fly from Washington, D.C. to Kathmandu?

To calculate monthly average prices, KAYAK takes all prices for each month over the last year for round-trip flights from Washington, D.C. to Kathmandu, removes the top 0.1% to account for outliers, and then takes the median of all values for each month.

The cheapest month for flights from Washington, D.C. to Kathmandu is October, where tickets cost $1,238 (return) on average. On the other hand, the most expensive months are June and December, where the average cost of round-trip tickets is $1,704 and $1,620 respectively.

How far in advance should I book a flight from Washington, D.C. to Kathmandu?

To calculate weekly average prices, KAYAK takes all prices for each week before departure over the last year for round-trip flights from Washington, D.C. to Kathmandu, removes the top 0.1% to account for outliers, and then takes the average of all the values for each week.

To get a below average price on the flight from Washington, D.C. to Kathmandu, you should book around 9 weeks before departure, which saves you about 12% compared to booking last minute. For the absolute cheapest price, our data suggests you should book 19 weeks before departure.

Good to know

Low seasonDecember
Cheapest flight$398
Best time to beat the crowds but there is an average 14% increase in price.
Most popular time to fly with an average 20% increase in price.
Flight from Washington Dulles Airport to Kathmandu

When to book flights from Washington, D.C. to Kathmandu

Are your dates flexible? Find out the best times to travel from Washington, D.C. to Kathmandu based on our flight data from the last year. Discover the cheapest month and even day to fly.
Estimated round-trip price
KAYAK looks at all historical flight data for each date to provide a predicted price for one-way trips or round-trips with a duration up to 40 days. While we try to provide actual minimum prices for each date, some prices are predictions and actual prices may differ.

FAQs for booking flights from Washington, D.C. to Kathmandu

  • What means of public transportation can I use to get to Kathmandu from KTM?

    To travel from KTM to Kathmandu via public transport, you can board a bus if you want to travel affordably or a taxi if you want to travel quickly. Getting either a bus or a taxi is an easy task as daily, there are plenty stationed outside the airport’s Arrivals Hall.

  • Where can I exchange my cash at KTM?

    If you want to convert some of your cash to the local currency, you’ll be able to do so without struggle, as KTM features two currency exchange sites in its Arrivals Hall.

  • How early should I get to my preferred Washington DC airport on my travel date?

    On the date you’re set to fly from Washington DC to Kathmandu, you should purpose to get to your preferred Washington DC airport at least 2h before your flight. This will give you adequate time to go through the airport’s security checkpoints. In addition, it will give you adequate time to check out the airport’s points of interest.

  • How can I get assisted travel services on my flight from Washington DC to Kathmandu?

    Airlines that offer flights from Washington DC to Kathmandu require that passengers in need of special assistance services contact them at least 72h before their flights. This being the case, if you’re disabled, you can get the assisted travel services you desire, provided you contact the airline you intend to travel with at least 72h before your flight.

  • What is the cheapest flight from Washington, D.C. to Kathmandu?

    In the last 3 days, the lowest price for a flight from Washington, D.C. to Kathmandu was $398 for a one-way ticket and $1,043 for a round-trip.

  • Do I need a passport to fly between Washington, D.C. and Kathmandu?

    Yes

  • Which airports will I be using when flying from Washington, D.C. to Kathmandu?

    Washington, D.C. has 2 major airports: Washington, D.C. Reagan-National and Washington, D.C. Dulles Intl. Kathmandu Tribhuvan is the only airport in Kathmandu. You’ll usually find the cheapest deals if you fly from Washington Dulles Airport.

  • Which aircraft models fly most regularly from Washington, D.C. to Kathmandu?

    We unfortunately don’t have that data for this specific route.

  • Which airline alliances offer flights from Washington, D.C. to Kathmandu?

    Star Alliance, and oneworld are the airline alliances operating flights between Washington, D.C. and Kathmandu, with Star Alliance being the most commonly used for this route.

  • What is the most popular layover when flying to Kathmandu from Washington, D.C.?

    Doha is the most popular layover city among KAYAK users traveling from Washington, D.C. to Kathmandu.

  • Which is the best airline for flights from Washington, D.C. to Kathmandu, Emirates or SWISS?

    The two airlines most popular with KAYAK users for flights from Washington, D.C. to Kathmandu are Emirates and SWISS. With an average price for the route of $1,331 and an overall rating of 8.1, Emirates is the most popular choice. SWISS is also a great choice for the route, with an average price of $1,674 and an overall rating of 7.6.

  • How does KAYAK find such low prices on flights from Washington, D.C. to Kathmandu?

    KAYAK is a travel search engine. That means we look across the web to find the best prices we can find for our users. With over 2 billion flight queries processed yearly, we are able to display a variety of prices and options on flights from Washington, D.C. to Kathmandu.

  • How does KAYAK's flight Price Forecast tool help me choose the right time to buy my flight ticket from Washington, D.C. to Kathmandu?

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to Kathmandu from Washington, D.C. is likely to change within 7 days, so travelers know whether to wait or book now.

  • What is the Hacker Fare option on flights from Washington, D.C. to Kathmandu?

    Hacker Fares allow you to combine one-way tickets in order to save you money over a traditional round-trip ticket. You could then fly to Kathmandu with an airline and back to Washington, D.C. with another airline.

  • What is KAYAK's "flexible dates" feature and why should I care when looking for a flight from Washington, D.C. to Kathmandu?

    Sometimes travel dates aren't set in stone. If your preferred travel dates have some wiggle room, flexible dates will show you all the options when flying to Kathmandu from Washington, D.C. up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

KAYAK’s top tips for finding a cheap flight from Washington, D.C. to Kathmandu

  • In Washington DC, you can board your flight to Kathmandu at Dulles International Airport (IAD), Baltimore Washington International Thurgood Marshall Airport (BWI), or Ronald Reagan Washington National Airport (DCA). When booking your flight, you should book one that departs at DCA. This is because apart from being the closest to Washington, it is easy to navigate, and has superb access to D.C.’s metro system.
  • If you want to pray or meditate privately before your flight from DCA, you're in luck because the airport has a chapel. The chapel is located on Concourse B's south end, opposite the Delta Airlines gates. The chapel is open to everyone and hosts clergy-led Protestant worship, Catholic masses, and Islamic prayers on a regular basis.
  • If you're traveling with a pet, you can let it relieve itself in one of DCA’s designated pet areas. The said areas are found near Door 1 in Terminal A, across from the South Metrorail Station entrance in Terminal B, and opposite the North Metrorail Station in Terminal C.
  • In Kathmandu, you’ll alight from your flight at Tribhuvan International Airport (KTM). If you’d like to catch your breath before leaving this airport, you can do so at its Executive Lounge. Located on the 2nd floor of the International Terminal, this lounge features comfortable seating, clean washrooms, hospitable staff, and a variety of snacks.
  • In case you need some information while at KTM, you should visit the airport’s information desk on the Landside, near the check-in counter. Alternatively, you can visit the tourist booth on the airport’s ground level.

Reviews of the top 5 airlines serving from Washington, D.C. to Kathmandu

 
See real verified KAYAK customer reviews for airlines flying from Washington, D.C. to Kathmandu. Airline scores are aggregated from all reviews left by passengers on KAYAK after flying with an airline. KAYAK doesn’t show reviews that are older than 5 years. Learn how KAYAK collects reviews.
Need help choosing which airline to fly with from Washington, D.C. to Kathmandu? KAYAK airline reviews give an overall score for each airline based on loads of factors, including comfort, boarding, in-flight entertainment and more, to make your decision easier. See airline scores according to verified KAYAK customer reviews.
8.1
EmiratesOverall score based on 3507 reviews
8.1Boarding
8.0Comfort
8.2Entertainment
7.9Food
8.3Crew
Airline reviews

I liked the newer aircraft CRJ-550 since it had WIFI and the seats are more spacious.

8.0 ExcellentUsha, Jan 2026
BHM - ORD
Read more Emirates reviews

I liked the newer aircraft CRJ-550 since it had WIFI and the seats are more spacious.

Fly Dubai takes low cost and thrift to new depths in terms of service levels, terminal 2 is grossly inadequate for capacity and resembles a crowded buss or railway station,, the fly dubai( Emirates) flight is never on time(was 2.5 hrs delayed), and this is not an isolated experience, the flght air conditioning was turned low while we waited on the tarmac for take clearance to save fuel, should say more!!!! The depths! I only fly this airline from a compulsion, emirates code shares for connections to Muscat

They changed the flight time without telling us and were unwilling to help with rebooking because we booked through orbits/kayak

Emirates did great! I liked the service, the food, cleanness, and the flight was on time. Much better airline than Qatar Airways I flew with last year.

I lost my lock from my luggage, I don’t know someone took something from my bag.

Except for the uncleaned tray, and the delay in serving food for our section (which may have been due to the location of our row) everything else was good. The crew were very professional and responded to our requests promptly throughout the flight. We as a family were not disappointed by Emirates.

It was great, a little more leg room would have been better particularly since we were in premium economy

The boarding process was smooth and the stewardesses were nice. Some delays with drinks at the end of the flight, but no issues.

Thay crew was so nice.Air hostess il ham was so nice.my mom was little scray with airplan turbulence she help us alot.

Seat 💺 was all the way on last row. Food was okay .

When we checked in at the Siem Reap Airport in Cambodia, we were only given three boarding passes and told that we would have to check in with American when we arrived in Boston. This was a source of stress for us. After we landed in Boston, we had a long passage from Terminal E to Terminal B (American Airline ticketing counter). Because the electronic ticketing kiosks for check-in would not recognize our Confirmation Code, we had to wait for an hour in a long line where only two AA reps were taking care of Special Services passengers. In many years of both business and recreational travel, I have never had this experience. I would expect more from AA being in partnership with other airlines to do a better job with this.

Our experience on the Doha to Hyderabad segment was extremely stressful due to prolonged delays and a lack of clear communication from the airline. We were traveling as a family, including children, and the uncertainty around timing and next steps caused significant distress. There was very little proactive information provided during the delay, and we were not given clear written explanations about what was happening or how long it might take. This made it difficult to manage the situation, especially while caring for children in a transit environment. In addition, one member of our party was ultimately unable to continue travel, which added to the emotional strain and disruption of the trip. Overall, the experience highlighted gaps in communication, customer care, and handling of unexpected situations. We are sharing this feedback so that future passengers, especially families, are supported with clearer communication and better assistance during irregular operations.

The seat cushions are absolutely lacking, not sure if they know the passengers are traveling for 14 hours straight, but the padding made our back and butt ache like crazy. The entertainment console had its own problems, either the headphone jack wasn't working or the power outlet via usb or ac outlet was not working. Not to mention the seat handles were not adjustable in some planes in the middle or on the aisle. Qatar/Indigo may be operating a very old fleet of planes to make as much profit as possible, but passengers may not be following them for long, should this treatment of its customers continue. Qatar/Indigo, wake up and do it right by your customers, or they may not be your customers anymore.

It would help id flight crew were not rude and showed some courtesy. They were shouting at passengers and yelling instructions as if we were school children at lunch cafeteria!!

All good. Over four hours flight if provided snacks like Qatar Airways would be better

Lobster starter in business class was not good, tough, served cold, and without butter. Movie selection was missing latest releases, did not offer older classic, high quality movies

Food was absolutely pathetic. I wasted so much food which I thought was inedible. I also loathe the inflight entertainment system which has very little content

My entire row did not have power for the full duration of a 14.5 hour flight. Could not charge any devices such as laptop or phones for the entirety of the long flight. The flight attendants tried to remedy the issue by resetting the power, but were not successful. The only other solution provided was to move me to another seat on the plane which was in the middle row. I had paid for a “preferred” seat that was a window seat. This was a downgrade being offered due to the power issue.

Nothing to complain. The staff and flight was good especially the seats which was better compared than the cloth ones on Qatar airways

I was travelling 3.5 years after. Agree Economy is no business class but the food was mediocre. Ordered a Hindu meal, the salads were bitter . The food was really below quality and had no tast from what I had in the past. Indian Railways probably have a better quality food when compared. However the kids meal was really nice and really appreciate how they were taken care of. The restrooms were dirty .

After arriving in Istanbul, the transit information on the electronic board showed a tight departure time, and the gate changed in the middle, making it difficult to make it on time.

Typically good service onboard but baggage delay in airport was significant

My, Syed Zawar Hussein Shirazi frequently flyer membership number was not included on my boarding pass from O’Hare to Istanbul despite my reminder to the attendant at check in. Further she forgot to give me my boarding pass form Istanbul to Lahore and she needs to improve her customer service, please 🙏

Everything about that day was great I was happy with how things went as a first time traveling with the airline thank you for all that you’ve doing by taking us there to our various destinations thanks.

They oversold the tickets by one which was my ticket so I didn’t have a ticket till last second

Not good. I was supposed to be in Mint but got in economy class

Service was slow and checked bag was off last evening when flying business

Turkish Airline canceled our tickets in the very last minute, with our luggage and everything else, all prepared and good to go. It’s clear that they sold the tickets for better money to someone else. Bad, Bad, Bad business!!!

Awful seating. Bad food. Staff only have one bottle of water and no cans.

it was like a banya -so hot... They did provide a great experience with special food. one toilet broke midflight In general it was a peaceful and relaxing flight - for business class it was good.

Flight was delayed and due to this we almost miss the connection flight

The flight was delayed by 3 hours, causing me to miss my connecting international flight. I then had to wait in the airport 18 hours for the next flight. The reason for the delay was a computer issue, not something outside of their control like weather. To add insult to injury, instead of trying to expedite the flight to make up for lost time, they ran a carry-on baggage check to verify every bag onboard belonged to someone on the plane, which took another 20 minutes.

झूठा है इंडिगो फ्लाइट में मील दिया नहीं जब शिकायत किया तो बोला आपको मिल चुका है

It took a lot of time to declare that the flight gonna be cancelled ☹️ very disappointed.

Electronic check in is must these days. Food could be better.

They denied my meal which was included in ticket and also damaged my bag completely and broke the wheel and still not accepting their fault

Flight cancelled after 4+ hour delay. Indigo created a nightmare scenario and showed the most callus attitude towards the passengers I will refer to them was IndiNoGo!

Very nice and pleasant. Boarding was quick and the crew were responsive

Foreign nationals are not permitted to check in online in advance. We can only check in at the airport, so choice of seat was limited. I was stuck in a very uncomfortable location. I would expect a meal included in a flight of this duration. The food options to buy are very basic. IngiGo are a very good domestic carrier, but if they are serious about operating more international, longer haul flights, they need to improve this service to match every other airline I know.

Very hard seats. No food service, even though price is not competitive.

Flight was cancelled by air India. There was no explanation provided why the flight was cancelled. Found out that the flight was cancelled because the Iran air space was closed. Meanwhile, all other flights passing through that region were operating without issues. When asked to refund money for the tickets, being told that “ As checked, we wish to share that Flight AI 116 on 15 January 2026 from New York to Mumbai was cancelled due to Iran airspace closure, which were beyond the airline’s control. While such events can disrupt travel plans, we appreciate your understanding and patience. Our team remains committed to ensuring the safety and comfort of all passengers and takes all necessary measures to minimize any issues. However, we must inform you that compensation is not applicable under these extraordinary circumstances, in accordance with the relevant regulations.” Completed unacceptable and unprofessional behavior!

Needs lots of improvement starting from crew/staff attitude, cleanliness, better quality food & in flight amenities.

Food was below par Quality and None of the Entertainment systems were Working ..and we were unable to turn it off.. Due to the glare we couldn't even sleep for the entire duration of the flight ..

Horrible flight. No entertainment or WiFi for a 14-hour flight. No explanations either. I’ll never fly Air India again.

Several seats in business class were broken. Some would not recline, others had other problems. They need to really update the seats and AV.

Never can get flight and nof light for three days .finally travel by bus. Very bad experience.

Food not of any international or even Indian standard. We have many cuisine available but only paneer & sundry items. Improve & provide some good indian items. Entertainment website or channel out of order.

First and the foremost I was shocked to see airindia standards have come down so low . The food was horrible . They served us 3 meals for vegetarian and all the was paneer . The orange juice was not at all cold it was smelly . After you take this heavy price air India should learn from other air lines . I at one point felt like throwing up . After all this when we landed we were not given landing slip . We had to wait for 45 min at the immigration just because no one was given landing slip . To top it all we were 3 passengers and had checked in 4 check in luggage . Out of which 3 have not yet arrived . Basically status says the loaded it in our flight ( this was a direct fight ) and it never reached . We are still waiting . There is nothing great to tell about our flight . The he only good thing was the crew were very helpful .

Lay out shows 1st row and second row given after taking payment. It's a fraud

The seats were extremely uncomfortable. Air India seats used to be very comfortable . with sufficient legroom. In this aircraft there was no legroom. It is a shame that for your profit margins you are trying to pack people like cattle on these long haul flights. The food was terrible. The bread was hard like a rock. Mr CEO of Air India, why don’t you take a flight in economy from India to USA and experience the hardships first hand. It is utter disgrace

Everything you need to know for your flight from Washington, D.C. to Kathmandu

Information on your arrival and departure airports