Kathmandu

$437+ Cheap flights from Washington, D.C. (WAS) to Kathmandu (KTM)

This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 8/18. Fares are subject to change and may not be available on all flights or dates of travel.
WAS — KTM
Aug 21 — Aug 281
We work with more than 300 partners to bring you better travel deals

Find cheap flights from Washington, D.C. to Kathmandu with Cheapflights

1. Tell us where you want to go

Enter your travel information like dates, passengers, trip type (one-way or round trip), and preferred cabin class then click “Find deals”

2. Select your favorite providers

We find the providers serving your travel needs. Choose up to four travel providers to compare side-by-side for flights, hotels, or car rentals.

3. Compare prices and book

Review each provider’s pricing and select the best option for you! Book through your favorite provider’s website for a seamless experience.

Cheapflights Tip: The best prices from Washington, D.C. to Kathmandu Tribhuvan are usually found in September or August, booked 8 days in advance, depart on a Friday or Saturday and return on a Thursday

Cheap flight deals from Washington, D.C. to Kathmandu

Discover tips and strategies to find the most affordable flight options for your journey from Washington, D.C. (WAS) to Kathmandu (KTM). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated August 16, 2025.

Round-trip from

$972
(Trip.com)

One-way from

$437
(Kiwi.com)

Popular in

December

Cheapest in

September

Average price

$1,259
From Washington, D.C. (WAS) to Kathmandu Tribhuvan
One-way flight from Washington, D.C. (WAS) to Kathmandu Tribhuvan
Highest demand for flights based on searches. 9% potential increase in price ($159 potential increase over avg. RT price).
Cheapest flight prices on average. 3% potential price decrease ($52 potential savings vs. average RT price).
Average for round-trip flights in August 2025

Find flight deals from Washington, D.C. to Kathmandu

Cheapest flights from Washington, D.C. to Kathmandu
Explore the most affordable flight options available from Washington, D.C. to Kathmandu. Find the lowest fares from popular airlines and budget airlines, with prices last updated on August 16, 2025.

This Trip.com deal was found by Cheapflights users on 8/15. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/97:25 pmIAD - KTM
2 stops28h 45mMultiple Airlines
Tue 9/1610:55 amKTM - IAD
2 stops43h 00mMultiple Airlines
Deal found 8/15$972
This FlightHub deal was found by Cheapflights users on 8/14. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/31:30 pmIAD - KTM
2 stops40h 25mIndiGo
Tue 9/303:05 pmKTM - IAD
2 stops38h 25mIndiGo
Deal found 8/14$974
This Trip.com deal was found by Cheapflights users on 8/14. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 9/610:05 pmIAD - KTM
2 stops34h 20mMultiple Airlines
Mon 10/61:25 pmKTM - IAD
2 stops36h 30mMultiple Airlines
Deal found 8/14$983
This oojo deal was found by Cheapflights users on 8/13. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/105:55 pmDCA - KTM
2 stops50h 55mAir India
Mon 11/106:30 amKTM - DCA
2 stops43h 05mAir India
Deal found 8/13$984
This Trip.com deal was found by Cheapflights users on 8/14. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/1110:05 pmIAD - KTM
2 stops34h 20mMultiple Airlines
Thu 9/181:25 pmKTM - IAD
2 stops36h 30mMultiple Airlines
Deal found 8/14$992
This oojo deal was found by Cheapflights users on 8/14. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/35:55 pmDCA - KTM
2 stops40h 25mAir India
Tue 9/3010:05 amKTM - DCA
2 stops46h 36mAir India
Deal found 8/14$996
This Trip.com deal was found by Cheapflights users on 8/13. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 11/59:10 pmIAD - KTM
2 stops34h 40mMultiple Airlines
Sun 11/161:45 pmKTM - IAD
2 stops37h 05mMultiple Airlines
Deal found 8/13$1,005
This oojo deal was found by Cheapflights users on 8/14. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 8/286:30 amDCA - KTM
2 stops38h 20mAir India
Sun 9/145:30 pmKTM - DCA
2 stops39h 11mAir India
Deal found 8/14$1,020
This Trip.com deal was found by Cheapflights users on 8/14. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 9/1310:05 pmIAD - KTM
2 stops34h 20mMultiple Airlines
Sat 9/201:25 pmKTM - IAD
2 stops36h 30mMultiple Airlines
Deal found 8/14$1,020
This Trip.com deal was found by Cheapflights users on 8/15. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 9/1410:05 pmIAD - KTM
2 stops34h 20mMultiple Airlines
Sun 9/211:25 pmKTM - IAD
2 stops36h 30mMultiple Airlines
Deal found 8/15$1,024
This oojo deal was found by Cheapflights users on 8/15. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 9/156:19 amDCA - KTM
2 stops38h 31mAir India
Sun 9/219:00 pmKTM - DCA
2 stops32h 05mAir India
Deal found 8/15$1,033
This oojo deal was found by Cheapflights users on 8/14. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 9/216:19 amDCA - KTM
2 stops38h 31mAir India
Wed 11/56:30 amKTM - DCA
2 stops43h 05mAir India
Deal found 8/14$1,034

Cheapflights Fare Finder

 
Customize your flight search to find flights from Washington, D.C. to Kathmandu that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated August 16, 2025.
Use the filters below to find and compare flights from Washington, D.C. to Kathmandu that are best for you.

Fly from

Washington, D.C.

Fly to

Kathmandu

Route

Depart

Return

Price

Washington, D.C.Kathmandu

DCA - KTM

DCAKTM

Washington, D.C. Reagan-National

Wed 9/10

5:55 pm-6:35 am

2 stops50h 55m

Kathmandu Tribhuvan

Mon 11/10

6:30 am-2:50 pm

2 stops43h 05m

$984

Washington, D.C.Kathmandu

DCA - KTM

DCAKTM

Washington, D.C. Reagan-National

Wed 9/3

5:55 pm-8:05 pm

2 stops40h 25m

Kathmandu Tribhuvan

Tue 9/30

10:05 am-10:56 pm

2 stops46h 36m

$996

Washington, D.C.Kathmandu

IAD - KTM

IADKTM

Washington, D.C. Dulles Intl

Wed 11/5

9:10 pm-6:35 pm

2 stops34h 40m

Kathmandu Tribhuvan

Sun 11/16

1:45 pm-4:05 pm

2 stops37h 05m

$1,005

Washington, D.C.Kathmandu

IAD - KTM

IADKTM

Washington, D.C. Dulles Intl

Sat 9/13

10:05 pm-6:10 pm

2 stops34h 20m

Kathmandu Tribhuvan

Sat 9/20

1:25 pm-4:10 pm

2 stops36h 30m

$1,020

Washington, D.C.Kathmandu

DCA - KTM

DCAKTM

Washington, D.C. Reagan-National

Thu 8/28

6:30 am-6:35 am

2 stops38h 20m

Kathmandu Tribhuvan

Sun 9/14

5:30 pm-10:56 pm

2 stops39h 11m

$1,020

Washington, D.C.Kathmandu

DCA - KTM

DCAKTM

Washington, D.C. Reagan-National

Mon 9/15

6:19 am-6:35 am

2 stops38h 31m

Kathmandu Tribhuvan

Sun 9/21

9:00 pm-7:20 pm

2 stops32h 05m

$1,033

Washington, D.C.Kathmandu

DCA - KTM

DCAKTM

Washington, D.C. Reagan-National

Sun 9/21

6:19 am-6:35 am

2 stops38h 31m

Kathmandu Tribhuvan

Wed 11/5

6:30 am-2:50 pm

2 stops43h 05m

$1,034

Washington, D.C.Kathmandu

DCA - KTM

DCAKTM

Washington, D.C. Reagan-National

Sun 9/14

6:19 am-8:05 pm

2 stops28h 01m

Kathmandu Tribhuvan

Fri 10/10

5:30 pm-10:56 pm

2 stops39h 11m

$1,035

Washington, D.C.Kathmandu

DCA - KTM

DCAKTM

Washington, D.C. Reagan-National

Mon 9/15

6:19 am-6:35 am

2 stops38h 31m

Kathmandu Tribhuvan

Thu 11/20

6:30 am-2:59 pm

2 stops43h 14m

$1,035

Washington, D.C.Kathmandu

DCA - KTM

DCAKTM

Washington, D.C. Reagan-National

Tue 9/9

5:42 pm-11:00 pm

2 stops43h 33m

Kathmandu Tribhuvan

Tue 9/16

10:05 am-10:56 pm

2 stops46h 36m

$1,043

Flights are sorted by cheapest round-trip flights first.

Deals found on 8/15

Showing 1-10 of 53 results
1
2
3
...
6

Best time to book a flight from Washington, D.C. to Kathmandu

Have a flexible travel schedule? Discover the best time to fly to Kathmandu from Washington, D.C. with our price prediction graph.
Estimated round-trip price
Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.

Cheapflights Insights

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

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

Use this chart to determine the optimal time to book a round-trip flight from Washington, D.C. to Kathmandu. Price data was last updated on August 8, 2025.

The best time to book flights from Washington, D.C. to Kathmandu is 8 days before your desired departure date. The cost of your flight will likely increase significantly if you book two weeks in advance of your flight.

What is the cheapest month to book a flight from Washington, D.C. to Kathmandu?

Currently, August is the cheapest month in which you can book a flight from Washington, D.C. to Kathmandu (average of $1,229). Flying from Washington, D.C. to Kathmandu in June is currently the most expensive (average of $1,683). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

What is the cheapest time of day to fly from WAS to KTM?

Find hourly flight availability from Washington, D.C. to Kathmandu. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated August 16, 2025.

It’s typically best to fly out from Washington, D.C. to Kathmandu in the morning. Doing so could potentially save you 30% on the flight price compared to flying at noon, which is usually more expensive.

How much does it cost to fly round-trip from Washington, D.C. to Kathmandu?

What’s the top layover airport for flights from Washington, D.C. to Kathmandu?

Share of 1-stop round-trip flights from Washington, D.C. to Kathmandu chosen by Cheapflights users in the past 12 months, using the same layover each way.

Doha (DOH) – chosen by Cheapflights users on 59% of 1-stop itineraries from Washington, D.C. to Kathmandu on Cheapflights.

What’s the cheapest layover airport for flights from Washington, D.C. to Kathmandu?

Average round-trip fare for 1-stop flights from Washington, D.C. to Kathmandu, chosen by Cheapflights users in the past 12 months, with the same layover each way.

Dubai (DXB) is the most affordable 1-stop option, with an average round-trip price of $1,364.

What’s the fastest layover option from Washington, D.C. to Kathmandu?

Shortest average travel time for 1-stop one-way flights from Washington, D.C. to Kathmandu, based on itineraries clicked by Cheapflights users over the past 12 months, grouped by layover airport.

Flights via Doha (DOH) have the shortest average one-way travel time for 1-stop routes: 19h 08m.

Which airport typically offers the quickest layover for flights from Washington, D.C. to Kathmandu?

Average layover duration for 1-stop one-way flights from Washington, D.C. to Kathmandu, chosen by Cheapflights users in the last 12 months, grouped by stopover airport.

Flights via New Delhi (DEL) offer the fastest connection on this route, with an average layover time of 4h 37m.

Reviews of airlines servicing Kathmandu

Get insights into the airlines that provide service to Kathmandu. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to Kathmandu. Reviews last updated August 16, 2025.
Read through reviews of airlines operating flights from Washington, D.C. to Kathmandu, such as Emirates, Qatar Airways, and Turkish Airlines. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.

Comfort

8.0

Boarding

8.1

Entertainment

8.2

Food

7.9

Overall

8.1

Crew

8.3

Reviews

1 / 20
4.0
Okay

Anonymous,Dec 2024

IAD - DXB

Not so good. Flight was departed 2 hours late from DC and we missed our connecting flight from Dubai to Mumbai. Our flight Dubai to Mumbai got delayed by three hours. Once we arrived Bombay airport we didnot get all our luggage bags. We were missing two luggage bags so found out that our those two luggage bags are coming in different flight. First they gave us wrong flight information in which our missing luggage coming and wrong phone number to whom we should reach out. I spent hours and hours at the airport to find out our luggage bags. After four five hours later and hectic time at the airport to get our luggage bags. Overall poor communication with emirates staff at the airport and no one is helpful.

Comfort

8.0

Boarding

8.1

Entertainment

8.2

Food

7.9

Overall

8.1

Crew

8.3

Reviews

1 / 20
4.0
Okay

Anonymous,Dec 2024

IAD - DXB

Not so good. Flight was departed 2 hours late from DC and we missed our connecting flight from Dubai to Mumbai. Our flight Dubai to Mumbai got delayed by three hours. Once we arrived Bombay airport we didnot get all our luggage bags. We were missing two luggage bags so found out that our those two luggage bags are coming in different flight. First they gave us wrong flight information in which our missing luggage coming and wrong phone number to whom we should reach out. I spent hours and hours at the airport to find out our luggage bags. After four five hours later and hectic time at the airport to get our luggage bags. Overall poor communication with emirates staff at the airport and no one is helpful.

Comfort

8.0

Boarding

8.1

Entertainment

8.2

Food

7.9

Overall

8.1

Crew

8.3

Reviews

1 / 20
4.0
Okay

Anonymous,Dec 2024

IAD - DXB

Not so good. Flight was departed 2 hours late from DC and we missed our connecting flight from Dubai to Mumbai. Our flight Dubai to Mumbai got delayed by three hours. Once we arrived Bombay airport we didnot get all our luggage bags. We were missing two luggage bags so found out that our those two luggage bags are coming in different flight. First they gave us wrong flight information in which our missing luggage coming and wrong phone number to whom we should reach out. I spent hours and hours at the airport to find out our luggage bags. After four five hours later and hectic time at the airport to get our luggage bags. Overall poor communication with emirates staff at the airport and no one is helpful.

Comfort

8.0

Boarding

8.1

Entertainment

8.2

Food

7.9

Overall

8.1

Crew

8.3

Reviews

1 / 20
4.0
Okay

Anonymous,Dec 2024

IAD - DXB

Not so good. Flight was departed 2 hours late from DC and we missed our connecting flight from Dubai to Mumbai. Our flight Dubai to Mumbai got delayed by three hours. Once we arrived Bombay airport we didnot get all our luggage bags. We were missing two luggage bags so found out that our those two luggage bags are coming in different flight. First they gave us wrong flight information in which our missing luggage coming and wrong phone number to whom we should reach out. I spent hours and hours at the airport to find out our luggage bags. After four five hours later and hectic time at the airport to get our luggage bags. Overall poor communication with emirates staff at the airport and no one is helpful.

Comfort

8.0

Boarding

8.1

Entertainment

8.2

Food

7.9

Overall

8.1

Crew

8.3

Reviews

1 / 20
4.0
Okay

Anonymous,Dec 2024

IAD - DXB

Not so good. Flight was departed 2 hours late from DC and we missed our connecting flight from Dubai to Mumbai. Our flight Dubai to Mumbai got delayed by three hours. Once we arrived Bombay airport we didnot get all our luggage bags. We were missing two luggage bags so found out that our those two luggage bags are coming in different flight. First they gave us wrong flight information in which our missing luggage coming and wrong phone number to whom we should reach out. I spent hours and hours at the airport to find out our luggage bags. After four five hours later and hectic time at the airport to get our luggage bags. Overall poor communication with emirates staff at the airport and no one is helpful.

Comfort

8.0

Boarding

8.1

Entertainment

8.2

Food

7.9

Overall

8.1

Crew

8.3

Reviews

1 / 20
4.0
Okay

Anonymous,Dec 2024

IAD - DXB

Not so good. Flight was departed 2 hours late from DC and we missed our connecting flight from Dubai to Mumbai. Our flight Dubai to Mumbai got delayed by three hours. Once we arrived Bombay airport we didnot get all our luggage bags. We were missing two luggage bags so found out that our those two luggage bags are coming in different flight. First they gave us wrong flight information in which our missing luggage coming and wrong phone number to whom we should reach out. I spent hours and hours at the airport to find out our luggage bags. After four five hours later and hectic time at the airport to get our luggage bags. Overall poor communication with emirates staff at the airport and no one is helpful.

Related info for your journey

Find useful and relevant information for your journey from Washington, D.C. to Kathmandu. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.
  • What airport do you fly into for flights to Kathmandu from Washington, D.C.?

    If you book a flight to Kathmandu from Washington, D.C., you will be flying to Tribhuvan, which is the city’s only airport. Kathmandu Tribhuvan (KTM) is located 2.5 mi from the center of Kathmandu. There are 0 flights from Washington, D.C. to Tribhuvan per day from 9 different airlines.

  • What are the cheapest airlines flying from Washington, D.C. to Kathmandu round-trip?

    Etihad Airways, at $777, was found to be the cheapest airline from Washington, D.C. to Kathmandu.Alternate airlines to your destination round-trip include Air India and Undisclosed Carrier. You may be able to fly from Washington, D.C. to Kathmandu for 46% less than the average price by searching for these airlines.

  • What are the most popular routes from Washington, D.C. to Kathmandu?

  • Where are the most common layover locations when flying from Washington, D.C. to Kathmandu?

  • What are some popular things to do or see while on a layover in Doha?

    Doha travelers tend to visit Museum of Islamic Art, Katara Cultural Village, and Aspire Tower more than anywhere else. Museum of Islamic Art, Katara Cultural Village, and Aspire Tower are located about 5.2 mi, 8.7 mi, and 10.6 mi, respectively from Doha Hamad Intl. Travelers can book a car rental at Doha Hamad Intl for about $19 per day to make their sightseeing more efficient.

  • What are some popular points of interest to see during a layover in New Delhi?

    Most New Delhi visitors opt to spend their time at Karol Bagh, Lajpat Nagar Central Market, and Gurudwara Bangla Sahib. Karol Bagh, Lajpat Nagar Central Market and Gurudwara Bangla Sahib are located about 8.7 mi, 8.7 mi, and 8.2 mi, respectively from New Delhi Indira Gandhi Intl if you are interested in checking them out. Travelers in need of a car in New Delhi can rent one for about $84 per day.

  • Where are the least popular layover locations for Washington, D.C. to Kathmandu flights?

  • Can I find deals for flights from Washington, D.C. to Kathmandu that include hotel bookings?

    Yes. In addition to deals on Washington, D.C. to Kathmandu flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from Washington, D.C. to Kathmandu?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Washington, D.C. to Kathmandu.

  • Can I find deals for business class flights from Washington, D.C. to Kathmandu?

    Yes. Cheapflights offers flight deals from Washington, D.C. to Kathmandu by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

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

    Currently, August is the cheapest month in which you can book a flight from Washington, D.C. to Kathmandu (average of $1,229). Flying from Washington, D.C. to Kathmandu in June is currently the most expensive (average of $1,683). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

See more FAQs

Traveling to a place near Kathmandu?

Book flights to Kathmandu if you plan to visit one of these locations
Nagarkot

Browse thousands of different options on Cheapflights for your next trip

Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.

Alternative routes for Washington, D.C. to Kathmandu

See prices for flight routes from nearby airports that may be better suited for you.

Top 8 airlines flying from Washington, D.C. to Kathmandu

Discover the top 8 airlines that operate flights from Washington, D.C. to Kathmandu. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated August 16, 2025.
AirlineCheapestAverageFlexibilityOn-time
Etihad AirwaysCheapest$777Average$1,597FlexibilityNo cancel feeOn-time75%
Air IndiaCheapest$870Average$1,367FlexibilityNo cancel feeOn-timeN/A
EmiratesCheapest$1,092Average$1,619FlexibilityNo cancel feeOn-time75%
IndiGoCheapest$1,156Average$1,332FlexibilityNo cancel feeOn-time80%
Qatar AirwaysCheapest$1,179Average$1,758FlexibilityNo cancel feeOn-time68%
Turkish AirlinesCheapest$1,190Average$1,736FlexibilityNo cancel feeOn-time77%
Singapore AirlinesCheapest$1,275Average$1,393FlexibilityNo cancel feeOn-time81%
SWISSCheapest$1,324Average$1,663FlexibilityNo cancel feeOn-time79%

100% Free

Cheapflights is completely free to use, so you can start saving the moment you arrive.

Book with Flexibility

Our users can plan ahead with confidence and find flights with no change fees

Travel Smart

Millions of people come to us for their flight needs every year. We help make travel planning easy by providing useful insights and data-driven graphs that can inform your decisions.