Kathmandu

$409+ Cheap flights from Dulles Intl (IAD) 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 1/25. Fares are subject to change and may not be available on all flights or dates of travel.
IAD — KTM
Jan 11 — Jan 181
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Cheapflights Tip: The best prices from Washington, D.C. Dulles Intl to Kathmandu Tribhuvan are usually found in August or September, booked 66 days in advance, depart on a Monday or Tuesday and return on a Tuesday

Cheap flight deals from Dulles Intl to Kathmandu

Cheapest flights from Dulles Intl to Kathmandu
Explore the most affordable flight options available from Dulles Intl to Kathmandu. Find the lowest fares from popular airlines and budget airlines, with prices last updated on December 12, 2025.

This Gotogate deal was found by Cheapflights users on 12/11. 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 Gotogate is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/302:35 pmIAD - KTM
1 stop31h 45mEtihad Airways
Mon 1/199:50 amKTM - IAD
1 stop34h 00mEtihad Airways
Deal found 12/11$1,325
This Mytrip deal was found by Cheapflights users on 12/11. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/302:35 pmIAD - KTM
1 stop31h 45mMultiple Airlines
Mon 1/199:05 pmKTM - IAD
2 stops33h 00mMultiple Airlines
Deal found 12/11$1,349
This CheapOair deal was found by Cheapflights users on 12/10. 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 CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 12/141:30 pmIAD - KTM
2 stops33h 35mIndiGo
Tue 12/165:10 pmKTM - IAD
2 stops36h 55mIndiGo
Deal found 12/10$1,565
This oojo deal was found by Cheapflights users on 12/11. 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 12/242:35 pmIAD - KTM
1 stop31h 45mEtihad Airways
Mon 1/199:50 amKTM - IAD
1 stop34h 00mEtihad Airways
Deal found 12/11$1,571
This oojo deal was found by Cheapflights users on 12/11. 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.
Sat 12/272:35 pmIAD - KTM
1 stop31h 45mEtihad Airways
Mon 1/269:50 amKTM - IAD
1 stop34h 00mEtihad Airways
Deal found 12/11$1,608
This CheapOair deal was found by Cheapflights users on 12/10. 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 CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 12/148:05 pmIAD - KTM
1 stop25h 05mMultiple Airlines
Tue 12/161:40 pmKTM - IAD
2 stops37h 00mMultiple Airlines
Deal found 12/10$1,634
This KAYAK deal was found by Cheapflights users on 12/11. 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 KAYAK is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 12/272:35 pmIAD - KTM
1 stop31h 45mEtihad Airways
Thu 1/229:50 amKTM - IAD
1 stop34h 00mEtihad Airways
Deal found 12/11$1,667
This Kiwi.com deal was found by Cheapflights users on 12/11. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/242:35 pmIAD - KTM
1 stop31h 45mMultiple Airlines
Wed 1/211:45 pmKTM - IAD
2 stops30h 05mMultiple Airlines
Deal found 12/11$1,709

Find flight deals from Dulles Intl to Kathmandu

Discover tips and strategies to find the most affordable flight options for your journey from Dulles Intl (IAD) 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 December 12, 2025.

Most accurate provider

Justfly.com
3 stars

Most trusted provider

Justfly.com
3 stars

Round-trip from

$1,138
(Mytrip)

One-way from

$409
(Trip.com)

Popular in

June

Cheapest in

August

Average price

$1,624
Provider with most accurate pricing for Washington, D.C. Dulles Intl-Kathmandu Tribhuvan flight deals.
Provider most trusted by Cheapflights users for Washington, D.C. Dulles Intl-Kathmandu Tribhuvan flights.
From Washington, D.C. Dulles Intl to Kathmandu Tribhuvan
One-way flight from Washington, D.C. Dulles Intl to Kathmandu Tribhuvan
Highest demand for flights based on searches. 6% potential increase in price ($98 potential increase over avg. RT price).
Cheapest flight prices on average. 1% potential price decrease ($24 potential savings vs. average RT price).
Average for round-trip flights in December 2025

Cheapflights Fare Finder

 
Customize your flight search to find flights from Dulles Intl 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 December 12, 2025.
Use the filters below to find and compare flights from Washington, D.C. Dulles Intl Airport to Kathmandu that are best for you.

Fly from

Dulles Intl

Fly to

Kathmandu

Route

Depart

Return

Price

Washington, D.C.Kathmandu

IAD - KTM

IADKTM

Washington, D.C. Dulles Intl

Thu 1/8

2:35 pm-9:05 am

1 stop31h 45m

Kathmandu Tribhuvan

Tue 4/7

10:50 am-9:45 am

2 stops32h 40m

$1,199

Washington, D.C.Kathmandu

IAD - KTM

IADKTM

Washington, D.C. Dulles Intl

Mon 1/19

10:30 am-6:35 pm

2 stops45h 20m

Kathmandu Tribhuvan

Wed 2/11

1:45 pm-8:10 am

2 stops53h 10m

$1,288

Washington, D.C.Kathmandu

IAD - KTM

IADKTM

Washington, D.C. Dulles Intl

Sat 1/3

2:35 pm-9:05 am

1 stop31h 45m

Kathmandu Tribhuvan

Tue 2/3

1:45 pm-9:05 am

2 stops30h 05m

$1,288

Washington, D.C.Kathmandu

IAD - KTM

IADKTM

Washington, D.C. Dulles Intl

Thu 2/12

7:51 pm-4:30 pm

2 stops33h 54m

Kathmandu Tribhuvan

Fri 3/13

9:05 pm-7:19 pm

2 stops31h 59m

$1,323

Washington, D.C.Kathmandu

IAD - KTM

IADKTM

Washington, D.C. Dulles Intl

Mon 1/19

9:15 pm-11:10 am

1 stop27h 10m

Kathmandu Tribhuvan

Wed 2/11

12:35 pm-7:20 pm

1 stop41h 30m

$1,329

Washington, D.C.Kathmandu

IAD - KTM

IADKTM

Washington, D.C. Dulles Intl

Thu 1/8

1:30 pm-11:10 am

1 stop34h 55m

Kathmandu Tribhuvan

Tue 4/7

7:30 am-11:35 am

1 stop37h 50m

$1,329

Washington, D.C.Kathmandu

IAD - KTM

IADKTM

Washington, D.C. Dulles Intl

Thu 1/8

10:30 am-6:35 pm

2 stops45h 20m

Kathmandu Tribhuvan

Wed 4/8

1:25 pm-8:40 am

2 stops29h 00m

$1,339

Washington, D.C.Kathmandu

IAD - KTM

IADKTM

Washington, D.C. Dulles Intl

Wed 2/11

10:30 am-6:40 pm

1 stop21h 25m

Kathmandu Tribhuvan

Fri 2/27

3:35 pm-8:10 am

1 stop27h 20m

$1,427

Washington, D.C.Kathmandu

IAD - KTM

IADKTM

Washington, D.C. Dulles Intl

Sun 2/8

10:30 am-6:40 pm

1 stop21h 25m

Kathmandu Tribhuvan

Tue 2/24

9:20 am-8:10 am

1 stop33h 35m

$1,427

Washington, D.C.Kathmandu

IAD - KTM

IADKTM

Washington, D.C. Dulles Intl

Sun 2/8

10:30 am-11:30 pm

1 stop26h 15m

Kathmandu Tribhuvan

Wed 2/25

9:20 am-8:10 am

1 stop33h 35m

$1,427

Flights are sorted by cheapest round-trip flights first.

Deals found on 12/9

Showing 1-10 of 21 results
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Compare providers for flights from Dulles Intl to Kathmandu

Provider information is updated monthly. Please note that these providers often have deals for this flight, but the availability may vary on a day-by-day basis on Cheapflights.
Use the table below to compare price accuracy, trust ratings, and cancellation policies for each provider offering flight deals from Dulles Intl to Kathmandu in December.
ProviderPrice AccuracyTrust Score*
ExpediaPrice Accuracy2 starsTrust Score*3 stars
FlightHubPrice Accuracy3 starsTrust Score*1 star
eDreamsPrice Accuracy3 starsTrust Score*3 stars
CheapfaremartPrice Accuracy-Trust Score*1 star
oojoPrice Accuracy3 starsTrust Score*3 stars
OvagoPrice Accuracy2 starsTrust Score*2 stars
Trip.comPrice Accuracy2 starsTrust Score*3 stars
AranGrantPrice Accuracy2 starsTrust Score*3 stars
JustAirTicketPrice Accuracy-Trust Score*1 star
Justfly.comPrice Accuracy3 starsTrust Score*3 stars

*The Trust Score is based on feedback from users after their booking experience. It measures overall satisfaction, helping us identify issues like hidden fees, problems during the ticketing process, and the quality of customer service. This score is our best indicator of the provider's quality and reliability.

  • Most accurate provider: When it comes to deals on Washington, D.C. Dulles Intl Airport-Kathmandu flights, users find the pricing of Justfly.com to be most consistent on Cheapflights vs. Justfly.com Users can find the same prices on Washington, D.C. Dulles Intl Airport-Kathmandu flight deals on Cheapflights vs. Justfly.com >95% of the time. Price accuracy is based on data collected from Washington, D.C. Dulles Intl Airport-Kathmandu flight searches over the past month and is updated monthly.
  • Most trusted provider: When it comes to deals on Washington, D.C. Dulles Intl Airport-Kathmandu flights, Cheapflights users trust Justfly.com the most. Justfly.com has received a user feedback score of 3 out of 3 stars (3 being the best), meaning they have been trusted the most by Cheapflights users looking for Washington, D.C. Dulles Intl Airport-Kathmandu flight deals. Provider user feedback score is based on Cheapflights searches over the past month and is updated monthly.

Best time to book a flight from Dulles Intl to Kathmandu

Have a flexible travel schedule? Discover the best time to fly to Kathmandu from Dulles Intl 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. Dulles Intl Airport to Kathmandu

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

Use this chart to determine the optimal time to book a round-trip flight from Dulles Intl to Kathmandu. Price data was last updated on December 5, 2025.

Booking 66 days in advance of your planned departure date is, on average, the best time to get cheap flights from Washington, D.C. Dulles Intl Airport to Kathmandu. The general trend is that the closer you book to the departure date, the more expensive your flight will be.

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

Currently, August is the cheapest month in which you can book a flight from Washington, D.C. Dulles Intl Airport to Kathmandu (average of $792). Flying from Washington, D.C. Dulles Intl Airport to Kathmandu in June is currently the most expensive (average of $1,230). 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 IAD to KTM?

Find hourly flight availability from Dulles Intl 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 December 12, 2025.

It’s typically best to fly out from Washington, D.C. Dulles Intl Airport to Kathmandu in the evening. Doing so could potentially save you 61% on the flight price compared to flying in the morning, which is usually more expensive.

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

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 December 12, 2025.
Read reviews from past customers who have flown Emirates, Qatar Airways, and Turkish Airlines from Washington, D.C. Dulles Intl Airport to Kathmandu. Users can see the overall rating for each airline as well as how each is rated in terms of entertainment options, comfort, food, crew/service, and boarding process.

Entertainment

8.2

Food

7.9

Boarding

8.1

Comfort

8.0

Crew

8.3

Overall

8.1

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.

Entertainment

8.2

Food

7.9

Boarding

8.1

Comfort

8.0

Crew

8.3

Overall

8.1

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.

Entertainment

8.2

Food

7.9

Boarding

8.1

Comfort

8.0

Crew

8.3

Overall

8.1

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.

Entertainment

8.2

Food

7.9

Boarding

8.1

Comfort

8.0

Crew

8.3

Overall

8.1

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.

Entertainment

8.2

Food

7.9

Boarding

8.1

Comfort

8.0

Crew

8.3

Overall

8.1

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.

Entertainment

8.2

Food

7.9

Boarding

8.1

Comfort

8.0

Crew

8.3

Overall

8.1

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 Dulles Intl 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. Dulles Intl?

    For a flight from Washington, D.C. Dulles Intl to Kathmandu, you will be flying into Tribhuvan. Kathmandu Tribhuvan (KTM) is just 2.5 mi from the center of the city. Tribhuvan is the only Kathmandu airport and it handles 0 inbound flights from Washington, D.C. Dulles Intl per day. 7 airlines have flights to Kathmandu Tribhuvan from Washington, D.C. Dulles Intl on a regular basis.

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

    There are many flights that can get you from Washington, D.C. Dulles Intl Airport to Kathmandu in 27h 10m. Fly via Turkish Airlines to get the fastest option. Airlines will cover a distance of 7695 mi.

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

    Air India, at $856, was found to be the cheapest airline from Washington, D.C. Dulles Intl Airport to Kathmandu.Alternate airlines to your destination round-trip include IndiGo and Emirates. These flights start at 40% lower than the current average price 3 months from now.

  • What are the cheapest airlines to fly from Washington, D.C. Dulles Intl Airport to Kathmandu one-way?

    $429 is the cheapest one-way deal found within the past few days, from IndiGo. You may also be able to find cheap deals on Air India and Turkish Airlines, with prices starting from $431 and $485, respectively.

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

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

    Karol Bagh, Lajpat Nagar Central Market, and Gurudwara Bangla Sahib are the most popular attractions in New Delhi if you're in need of something to do during your layover. 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. Travelers can book a car rental at New Delhi Indira Gandhi Intl for about $64 per day to make their sightseeing more efficient.

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

  • Can I find deals for flights from Dulles Intl to Kathmandu that include hotel bookings?

    Yes. In addition to deals on Dulles Intl to Kathmandu flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from Dulles Intl to Kathmandu?

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

  • Can I find deals for business class flights from Dulles Intl to Kathmandu?

    Yes. Cheapflights offers flight deals from Dulles Intl 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. Dulles Intl Airport to Kathmandu?

    Currently, August is the cheapest month in which you can book a flight from Washington, D.C. Dulles Intl Airport to Kathmandu (average of $792). Flying from Washington, D.C. Dulles Intl Airport to Kathmandu in June is currently the most expensive (average of $1,230). 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

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Alternative routes for Dulles Intl to Kathmandu

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

Top 7 airlines flying from Dulles Intl to Kathmandu

Discover the top 7 airlines that operate flights from Dulles Intl 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 December 12, 2025.
AirlineCheapestAverageFlexibilityOn-time
Air IndiaCheapest$858Average$1,331FlexibilityNo cancel feeOn-timeN/A
IndiGoCheapest$988Average$1,300FlexibilityNo cancel feeOn-time80%
EmiratesCheapest$1,092Average$1,272FlexibilityNo cancel feeOn-time75%
Turkish AirlinesCheapest$1,154Average$1,498FlexibilityNo cancel feeOn-time77%
Qatar AirwaysCheapest$1,233Average$1,473FlexibilityNo cancel feeOn-time68%
Etihad AirwaysCheapest$1,449Average$1,668FlexibilityNo cancel feeOn-time75%
SWISSCheapest$1,611Average$1,659FlexibilityNo cancel feeOn-time79%

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