IAD - KTM

$472 Find Cheap Flights from Washington Dulles Airport 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 Dulles Intl to Kathmandu departing on 10/29. 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

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.
Travelers love KAYAK
41,299,237 searches in the past 7 days on KAYAK

Save 22% or moreCompare multiple travel sites with one search.

Track pricesNot ready to book? Create a price alert for when prices drop.

Bundle and saveSave money when you bundle your flight + hotel.

Filter your dealsChoose cabin class, free Wi-Fi and more.

Flight Deals
Booking Insights
Flight Deals

Cheap Flights from Dulles Intl to Kathmandu (IAD-KTM)

 
Here are some of the best deals found on KAYAK recently from the most popular airlines for round-trip flights from Dulles Intl 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 Dulles Intl to Kathmandu

Sun, Nov 2 - Mon, Dec 15
IndiGo Logo
1:30 pm - 9:50 amIAD-KTM
33h 35m2 stops
IndiGo Logo
10:50 am - 7:15 pmKTM-IAD
43h 10m2 stops
$1,087IndiGo
Find Deal
Thu, Oct 9 - Sat, Oct 18
Multiple Airlines Logo
8:45 pm - 6:10 pmIAD-KTM
35h 40m2 stops
Multiple Airlines Logo
1:25 pm - 7:25 pmKTM-IAD
39h 45m2 stops
$1,090Multiple Airlines
Find Deal
Sun, Nov 16 - Mon, Dec 15
IndiGo Logo
1:30 pm - 3:40 pmIAD-KTM
39h 25m2 stops
IndiGo Logo
10:50 am - 7:15 pmKTM-IAD
43h 10m2 stops
$1,099IndiGo
Find Deal
Mon, Dec 8 - Fri, Feb 13
IndiGo Logo
9:10 pm - 3:40 pmIAD-KTM
31h 45m2 stops
IndiGo Logo
10:50 am - 7:15 pmKTM-IAD
43h 10m2 stops
$1,106IndiGo
Find Deal
Mon, Sep 29 - Sun, Nov 30
Multiple Airlines Logo
10:05 pm - 6:10 pmIAD-KTM
34h 20m2 stops
Multiple Airlines Logo
1:45 pm - 3:50 pmKTM-IAD
60h 50m2 stops
$1,107Multiple Airlines
Find Deal
Sat, Nov 22 - Wed, Dec 24
IndiGo Logo
1:30 pm - 3:40 pmIAD-KTM
39h 25m2 stops
IndiGo Logo
4:40 pm - 7:15 pmKTM-IAD
37h 20m2 stops
$1,108IndiGo
Find Deal
Fri, Nov 21 - Thu, Jan 22
IndiGo Logo
1:30 pm - 9:50 amIAD-KTM
33h 35m2 stops
IndiGo Logo
10:50 am - 7:15 pmKTM-IAD
43h 10m2 stops
$1,109IndiGo
Find Deal
Tue, Jan 27 - Wed, Feb 25
Emirates Logo
10:30 am - 10:40 pmIAD-KTM
25h 25m1 stop
Emirates Logo
3:00 pm - 8:10 amKTM-IAD
27h 55m1 stop
$1,163Emirates
Find Deal
Sun, Nov 2 - Mon, Dec 15
Emirates Logo
10:30 am - 10:40 pmIAD-KTM
25h 25m1 stop
Emirates Logo
11:40 pm - 8:10 amKTM-IAD
43h 15m1 stop
$1,220Emirates
Find Deal
Sun, Mar 8 - Sat, May 9
Emirates Logo
11:15 am - 2:00 pmIAD-KTM
41h 00m1 stop
Emirates Logo
1:10 am - 8:40 amKTM-IAD
41h 15m1 stop
$1,221Emirates
Find Deal

Everything you should know

Top airlines
IndiGo
Cheapest • from $1,087 (round-trip)
Emirates
Best reviews • 8.1 score
Airline reviews
Airline reviews
+1
+1
Airline reviews
Airline reviews
+1
Video guide: How to find cheap flights to Kathmandu
Watch video
Watch video
Watch video
Watch video
When to book
9 weeks
in advance
Our data shows that travelers who book at least 9 weeks in advance save around 16% compared to booking last minute.
Insights
Insights
Insights
Insights
When to travel
August
Cheapest • 19% price drop
October
Most popular
Good to know
Good to know
+1
+1
Good to know
Good to know
+1
Cheapest round-trip
$1,087
Overall average: $1,553
IndiGo
Sun 11/2Mon 12/15
IAD - KTM • 2 stops
Cheapest one-way
$472
Typical prices: $594-852
Multiple Airlines
Wed 10/29
IAD - KTM • 2 stops
Start a new search
KAYAK searches 100s of sites at once to find you the best travel deals.
We hope you love your trip to Kathmandu!
Booking Insights

KAYAK's insights & trends for Dulles Intl to Kathmandu flights

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

Find cheap flights to Kathmandu
Find cheap flights to Kathmandu

Planning a trip from Dulles Intl to Kathmandu? KAYAK’s data-powered insights will help you find cheap flights. Learn the best time to fly, how early to book your ticket, and other tips to secure great prices.

What’s the cheapest day of the week to fly from Washington Dulles Airport to Kathmandu?

The average price of all round-trip flights from Washington, D.C. Dulles Intl Airport to Kathmandu clicked on KAYAK for each day over the last 12 months.

Your flight ticket price will generally be cheaper if you fly to Kathmandu on a Tuesday and more expensive on a Thursday. On your return trip to Washington Dulles Airport, you should consider flying back on a Tuesday, and avoid Fridays for better deals.

What is the cheapest month to fly from Washington, D.C. Dulles Intl Airport 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. Dulles Intl Airport 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. Dulles Intl Airport to Kathmandu is August, where tickets cost $1,188 (return) on average. On the other hand, the most expensive months are December and June, where the average cost of round-trip tickets is $1,855 and $1,696 respectively.

How far in advance should I book a flight from Washington, D.C. Dulles Intl Airport 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. Dulles Intl Airport 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. Dulles Intl Airport to Kathmandu, you should book around 9 weeks before departure, which saves you about 16% compared to booking last minute. For the absolute cheapest price, our data suggests you should book 19 weeks before departure.

Good to know

Low seasonAugust
Cheapest flight$472
Best time to beat the crowds with an average 20% drop in price.
Most popular time to fly with an average 1% increase in price.
Flight from Washington Dulles Airport to Kathmandu

When to book flights from Dulles Intl to Kathmandu

Are your dates flexible? Find out the best times to travel from Dulles Intl 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 Washington Dulles Airport to Kathmandu flights

  • What amenities and services can I enjoy at Washington Dulles International Airport (IAD)?

    While waiting on your plane to leave Washington, D.C., you'll have access to many airport amenities such as charging stations, airline lounges, an interfaith chapel, several restaurants, and ATM machines. How about relaxing before your flight leaves? There is a spa by both Gates A & B.

  • How can I get from Tribhuvan International Airport (KTM) to my hotel?

    Public transportation is limited in Kathmandu. Therefore, a taxi might be your best option for getting to your hotel. At the airport, taxis pick up passengers outside of the arrival hall. You can also arrange for a taxi at the tourist information desk inside the airport.

  • Are there banking services or a currency exchange center at the Tribhuvan International Airport (KTM)?

    Yes, there are several ways that you can conduct financial business while at the airport. If you need to withdraw funds for your trip, there are ATM machines. There are also several bank branches inside the airport where you can get more personal service and/or exchange your US dollars for the Nepalese rupee.

  • Where can I park my car at the Washington Dulles International Airport (IAD)?

    There are several places to park at the Dulle Airport while you're on vacation in Kathmandu. If you'd prefer covered parking, there are a couple of parking garages that are a short walk from the terminal. The economy parking lot is best if you're traveling on a budget. It is right off of Dulles Access Road and a quick drive from the terminal. For your convenience, there is a shuttle that goes back and forth both day and night. Curbside valet service is also available.

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

    In the last 3 days, the lowest price for a flight from Washington, D.C. Dulles Intl Airport to Kathmandu was $472 for a one-way ticket and $1,087 for a round-trip.

  • Do I need a passport to fly between Washington Dulles Airport and Kathmandu?

    Yes, you'll most likely have to show a valid passport before boarding the plane in Washington Dulles Airport and on arrival in Kathmandu.

  • Which aircraft models fly most regularly from Washington Dulles Airport to Kathmandu?

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

  • What is the most popular layover when flying to Kathmandu from Washington Dulles Airport?

    Doha is the most popular layover city among KAYAK users traveling from Washington Dulles Airport 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 $1,431 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 $1,660 and an overall rating of 7.5.

  • How does KAYAK find such low prices on flights from Washington Dulles Airport 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 Dulles Airport to Kathmandu.

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

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to Kathmandu from Washington Dulles Airport 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 Dulles Airport 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 Dulles Airport with another airline. Booking your flights between Washington Dulles Airport and KTM can sometimes prove cheaper using this method.

  • What is KAYAK's "flexible dates" feature and why should I care when looking for a flight from Washington Dulles Airport 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 Dulles Airport 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. Dulles Intl Airport to Kathmandu

  • When booking your flight from Washington Dulles International Airport (IAD), you'll have your choice of flights. You'll have to change planes at least once in a major airport such as Doha Hamad International, Dallas/Fort Worth, Dubai International, or Delhi. Some layovers are as short as 48min.
  • Kathmandu Tribhuvan International Airport (KTM) services Kathmandu City and Kathmandu Valley. It has just two terminals, one for domestic flights and the other for international flights. The airport is about a 10min drive from Kathmandu's city center, 15min to Thamel, and about 16min from Patan.
  • You'll be able to get around Washington Dulles International Airport quickly using its airport transportation system. Known as the Aero Train, it takes passengers from one terminal to another. There are also moving walkways and shuttle service in between stations.
  • To help with your travel plans, there is a tourist information desk at the Kathmandu Tribhuvan Airport (KTM). It offers information about local attractions, accommodations, transportation, and places to eat.
  • If someone is dropping you off at the Washington Dulles International Airport (IAD), there are a few options. If you can get out of the car fast, curbside dropoff is very convenient. If you'll need a little time and don't want to be rushed, the terminal parking lot or one of the garages is ideal. Both provide easy access to the terminals via a covered walkway.

Reviews of the top 5 airlines serving from Dulles Intl 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 Dulles Intl 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 3334 reviews
8.0Comfort
8.1Boarding
7.9Food
8.2Entertainment
8.3Crew
Airline reviews

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

6.0 GoodJoy, Jul 2025IAH - DXB
Read more Emirates reviews

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 .

Charged for internet that never really worked. The food selection was just ok.

Boarding, seats, entertainment and service were all great. Food was great except for the fact that there were too many sweet items.

The entire crew went above and beyond. This was our first flight with our 3 month old, and they were accommodating and friendly. The crew is attentive and marks a HIGE difference to the regular runs with Avianca and LATAM.

Business class on this plane was adequate, service, amenities, swag, and crew was amazing!

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 .

My flight was with American Airlines 120. The flight was delayed 3 hours and I missed my connection. When I arrived in Doha, the AA staff told me to call an 800 number to rebook a different flight, which was unacceptable. Eventually a Qatar Air staff member helped rebook me on a flight to Manila, that was 12 hours later. They offered me a hotel and meal voucher which I declined, because I didn’t want to leave the airport. Long story short, I spent 12 hours in the Doha airport waiting for my next flight.

Overall the experience was neat with crew being nice and caring especially to parent with kids. The free snacks option was okay. The kiosk at Philly airport didn’t work.

Reason for travelling Tampa to Orlando is to fly Qatar Airline. we end up with American Airline. This was the miserable experience I ever had in my entire travel history. Flight attendants were rude. They hit my knee with the food cart and I was holding ice pack for 2 hours. I still have the pain after a week. WE boarded the flight twice because of the temperature inside the plan.

First keep the airline as you promise. Reason for travelling from Orlando to Tampa is to go with Qatar Airline. We end up with American Airline. As expected the service was horrible.

Not sure how we end up with American Airlines instead of Qatar Airways. From Philadelphia to Qatar they boarded us then they asked us to unload. After 30 minutes later they board us again. The inside the plane it was burning hot and we were sweating like crazy. Crew members are absolute rude. The way they served the passengers were horrible. One of the crew members hit my knee with food cart and kept going. I was holding an ice pack for almost 2 hours. I am still with the pain.

I felt that when I was rerouted it should have been to business class.

The flight was smooth Thank God but the delays and changing gates for 3-4 times made me so tired of walking back and forth with heavy bags I thought I was going to pass out with heavy headaches but Thank God finally found the final gate and home safe. These delays happen anytime for important reasons so just be patient when you come across these situations.

Rude staff. I would avoid using the word racist but definitely partially or discriminatory. My 72 yrs old mother who is also disabled was traveling on this flight. She was the second passenger boarded to the plane. The First elderly couple ahead of my mother were allowed to use the airplane bathroom but my mother was denied entry stating it was for safety reasons. My mother objected the the couple in front of her were allowed but hostess still stated that due to the flight safety reasons she can’t use it. Even my mother explained that he is using blood pressure medication that’s why she have to use the restroom frequently but the crew continued arguing her. At one point the Mae attendent even suggested that if that’s the case my mother can urinate in her seat. The level of disrespect against an elderly lady is beyond my comprehension. This matter will be taken to the social media to shame the employees involved.

my experience was great with Turkish airlines . the problem i encountered was with kayak booking. When I booked . it showed that im allowed a bag . and when I got to the airport, i had to pay $165 for one bag.

Not up to Business Class standards. Two of the three toilets were out of order. The hostesses were aware and didn’t show any responsible act to do something. Food quality was not what we expect from Turkish hospitality. Overall we were not impressed and disappointed.

During mid flight, try to get a flight attendant to help I couldn’t find one Otherwise, everything was perfect

I was not given basinett seat.The connecting flight was missed due to airline fault i was not accomodated for hotel.Drinks were normt served frewuently.Never travelling again on tirkish airlines.I always travel wiyh family by turkish airline but no more.zero stars

The crew were very hospitable and pleasant. The food was pretty good. Unfortunately, there was a flight delay of more than 2 hours. We're not sure why but it appeared to be outside the control of Turkish Airlines.

Bough tickets with luggage, but made me pay at Airport as well

The economy seat was so uncomfortable, had not enough leg room for 13 hours flight, front seat basket was broken and couldn’t hold anything, food quality was horrible( we got food poisoned ) we charged for logged which used to be free. We paid too much for this flight and very disappointed. Turkish air line better to make satisfy and respect people instead of find different way to scam people.

This is really the rating of two flights. JFK to IST then IST to NQZ. New York to Istanbul was good. Good crew and all positives. The flight to Astana was so bad that brought it all down. Crew was nonexistent above the minimum, seats were cramped, and it was hot on the plane. Turkish Airlines seems to be slipping down to US based carriers level.

The 2 agents on the check in counter were super nice , helpful and very polite. Boarding was like a 1 2 3, I would recommend Turkish airlines for your next trip.

IndiGo is low cost and therefore no frills, but is always a pleasant experience. No mood lighting and fancy features but clean aircraft, professional crew and absolute value for money.

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

Very hard seats for long flights. No food even on International flight. Won't fly Indigo again if I can help it.

Terrible experience at IST airport due to mismanagement by ground and wheelchair staff.

Some seats don’t recline. No USB port or power outlet, no inflight WIFI - not even for SMS/Messaging apps. Ontime performance was very good. They should have at least one crew member who speaks the local language, for flights like these.

Although we took the XL seats with more width, we found that you do not have a seat in front to stow your personal item, nor can you stretch your legs. This is not the best option for a comfortable seat. Boarding was timely but disorganized without any row based entry.

Not professional and didn’t know about double seat even when I paid for it and have a confirmation. Lack of comms between teams.

deboarding is very poor after landing it took around 45 minutes to come out.

My baggage bag got broken and only 3000 voucher was given for compensation

Crew members forgot to serve sandwiches after serving the coffee. Worst was the handling of bag. One of wheel was Broken making it useless. Though a complaint was registered and assured of compensation voucher equal to part cost of the new bag.

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

Absolutely nothing. Cold and unpleasant airline staff, and to top it all, the entertainment system was broken. Really harrowing experience.

BAD experience. Entertainment system was not working and most of the passengers had this issue. Staff was not helpful. Meal was yuck. Bad old flights.

Communication was terrible. Flight was delayed for 4-5 hours in DC (on the front end, and also after we boarded, we had to get off - some issue with fueling the old plane correctly). There was little to no information on timing or what was happening. Once we reach Delhi airspace, apparently there was weather that caused us not to land - we were actually near the ground, saw the run way, and lifted back up to the sky after being sooo close. Then we circled for about 30 minutes, and they decided to go to Jaipur to land until the weather cleared and to refuel. Again, once we landed in Jaipur (wrong city), there was little to no information on timing or what was happening. Then we heard that the crew was reaching their 24 hours. We sat on the place, on the tarmac for another 3 HOURS, with no food and not enough water for everyone on the flight. Then, they kicked us off the plane with no plan, in the wrong city. We went thru customs, got our bags (thank goodness), and had to ask a bunch of staff what was happening and what to do. Eventually, their soltuion was to bus people back to Delhi (like 6 hours we were told) but not everyone would fit on the bus, and unknown timing on when it would leave. At this point it was 9PM (we were scheduled to arrive in Delhi at 11AM...). My husband and I decided to risk it and take a cab that we had to pay ourselves (about $200 US dollars) to get to Delhi (about 5 hour drive). We both had terrible trips back to the US as well - almost missed connecting flight, forced to pay for carry-on luggage (a small back pack!) and duty-free goods by the Air India staff last minute. Just terrible experience all around. Never again with AI! The ONLY good thing was the air hostesses were kind and patient - example: they made sure people with food allergies got their correct.

It would have been perfect if there was onboard entertainment.

Food was unfit even for prisoners. larger front seats are terribly uncomfortable, which is ironic. Thorough need to upgrade aircraft on such a long route.

Everything you need to know for your flight from Dulles Intl to Kathmandu

Information on your arrival and departure airports

Not what you’re looking for? Find thousands of other hotels, flights, car rentals and package deals with KAYAK.