HomeSearch by dateVacation packagesHotelsFlight dealsCar rentalTravel tips & news
Kathmandu

$506+ 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 5/13. Fares are subject to change and may not be available on all flights or dates of travel.
IAD — KTM
May 4 — May 111
Sun 5/4
Sun 5/11
1 adult, Economy
We work with more than 300 partners to bring you better travel deals

Find cheap flights from Dulles Intl 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. Dulles Intl to Kathmandu Tribhuvan are usually found in September or April, booked 77 days in advance, depart on a Tuesday or Friday and return on a Tuesday

Cheap 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 April 29, 2025.

Most accurate provider

AranGrant
3 stars

Most trusted provider

AranGrant
3 stars

Round-trip from

$1,188
(Kiwi.com)

One-way from

$506
(Kiwi.com)

Popular in

December

Cheapest in

September

Average price

$1,341
Provider with most accurate pricing for Washington, D.C. Dulles Intl-Kathmandu Tribhuvan flight deals.
Search Deals
Provider most trusted by Cheapflights users for Washington, D.C. Dulles Intl-Kathmandu Tribhuvan flights.
Search Deals
From Washington, D.C. Dulles Intl to Kathmandu Tribhuvan
Search Deals
One-way flight from Washington, D.C. Dulles Intl to Kathmandu Tribhuvan
Search Deals
Highest demand for flights based on searches. 7% potential increase in price ($115 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 2% potential price decrease ($42 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in April 2025
Search Deals

Find 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 April 29, 2025.

This Kiwi.com deal was found by Cheapflights users on 4/29. 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.
Fri 5/911:00 amIAD - KTM
1 stop18h 55mMultiple Airlines
Mon 9/291:25 pmKTM - IAD
1 stop28h 00mMultiple Airlines
Deal found 4/29$1,188
This Booking.com deal was found by Cheapflights users on 4/28. 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 Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/109:40 pmIAD - KTM
2 stops29h 35mIndiGo
Wed 9/174:40 pmKTM - IAD
2 stops36h 50mIndiGo
Deal found 4/28$1,191
This FlightHub deal was found by Cheapflights users on 4/29. 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.
Tue 7/1511:00 amIAD - KTM
1 stop36h 20mAir India
Mon 8/112:00 pmKTM - IAD
1 stop27h 25mAir India
Deal found 4/29$1,256
This Indian Eagle deal was found by Cheapflights users on 4/29. 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 Indian Eagle is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 9/149:00 pmIAD - KTM
1 stop26h 05mQatar Airways
Sun 11/166:45 pmKTM - IAD
1 stop31h 55mQatar Airways
Deal found 4/29$1,351
This Indian Eagle deal was found by Cheapflights users on 4/29. 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 Indian Eagle is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 8/2510:55 amIAD - KTM
1 stop26h 25mEmirates
Wed 9/107:25 pmKTM - IAD
1 stop23h 00mEmirates
Deal found 4/29$1,391
This oojo deal was found by Cheapflights users on 4/29. 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.
Fri 8/810:05 pmIAD - KTM
1 stop31h 50mEtihad Airways
Mon 9/14:20 pmKTM - IAD
1 stop33h 35mEtihad Airways
Deal found 4/29$1,417

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 April 29, 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

Fri 5/9

11:00 am-3:40 pm

1 stop18h 55m

Kathmandu Tribhuvan

Mon 9/29

1:25 pm-7:40 am

1 stop28h 00m

$1,188

Washington, D.C.Kathmandu

IAD - KTM

IADKTM

Washington, D.C. Dulles Intl

Wed 9/10

9:40 pm-1:00 pm

2 stops29h 35m

Kathmandu Tribhuvan

Wed 9/17

4:40 pm-7:45 pm

2 stops36h 50m

$1,191

Washington, D.C.Kathmandu

IAD - KTM

IADKTM

Washington, D.C. Dulles Intl

Tue 7/15

11:00 am-9:05 am

1 stop36h 20m

Kathmandu Tribhuvan

Mon 8/11

2:00 pm-7:40 am

1 stop27h 25m

$1,256

Washington, D.C.Kathmandu

IAD - KTM

IADKTM

Washington, D.C. Dulles Intl

Sun 9/14

9:00 pm-8:50 am

1 stop26h 05m

Kathmandu Tribhuvan

Sun 11/16

6:45 pm-3:55 pm

1 stop31h 55m

$1,351

Washington, D.C.Kathmandu

IAD - KTM

IADKTM

Washington, D.C. Dulles Intl

Mon 8/25

10:55 am-11:05 pm

1 stop26h 25m

Kathmandu Tribhuvan

Wed 9/10

7:25 pm-8:40 am

1 stop23h 00m

$1,391

Washington, D.C.Kathmandu

IAD - KTM

IADKTM

Washington, D.C. Dulles Intl

Fri 8/8

10:05 pm-3:40 pm

1 stop31h 50m

Kathmandu Tribhuvan

Mon 9/1

4:20 pm-4:10 pm

1 stop33h 35m

$1,417

Washington, D.C.Kathmandu

IAD - KTM

IADKTM

Washington, D.C. Dulles Intl

Tue 5/13

11:00 am-3:40 pm

1 stop18h 55m

$506

Washington, D.C.Kathmandu

IAD - KTM

IADKTM

Washington, D.C. Dulles Intl

Mon 7/14

9:40 pm-9:50 am

2 stops26h 25m

$633

Washington, D.C.Kathmandu

IAD - KTM

IADKTM

Washington, D.C. Dulles Intl

Tue 5/20

10:05 pm-3:40 pm

1 stop31h 50m

$680

Washington, D.C.Kathmandu

IAD - KTM

IADKTM

Washington, D.C. Dulles Intl

Wed 9/24

1:30 pm-6:15 am

1 stop31h 00m

$692

Flights are sorted by cheapest round-trip flights first.

Deals found on 4/29

Showing 1-10 of 14 results
1
2

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 April.
ProviderPrice AccuracyTrust Score*
ExpediaPrice Accuracy1 starTrust Score*3 stars
FlightHubPrice Accuracy3 starsTrust Score*2 stars
eDreamsPrice Accuracy3 starsTrust Score*3 stars
CheapfaremartPrice Accuracy-Trust Score*1 star
AranGrantPrice Accuracy3 starsTrust Score*3 stars
Justfly.comPrice Accuracy3 starsTrust Score*2 stars
OvagoPrice Accuracy2 starsTrust Score*2 stars
Trip.comPrice Accuracy1 starTrust Score*3 stars
GurufarePrice Accuracy3 starsTrust Score*3 stars
FareScanPrice Accuracy-Trust 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 AranGrant to be most consistent on Cheapflights vs. AranGrant Users can find the same prices on Washington, D.C. Dulles Intl Airport-Kathmandu flight deals on Cheapflights vs. AranGrant >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 AranGrant the most. AranGrant 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 April 25, 2025.

Booking 77 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, September is the cheapest month in which you can book a flight from Washington, D.C. Dulles Intl Airport to Kathmandu (average of $1,237). Flying from Washington, D.C. Dulles Intl Airport to Kathmandu in June is currently the most expensive (average of $1,886). 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 April 29, 2025.

It’s typically best to fly out from Washington, D.C. Dulles Intl Airport to Kathmandu in the morning. Doing so could potentially save you 26% on the flight price compared to flying at noon, which is usually more expensive.

Rainfall in Kathmandu by month

Plan your trip to Kathmandu by taking into account the average rainfall totals by month.

In terms of precipitation, rainfall in Kathmandu ranges from 0.0 - 14.6 inches per month. July is typically the wettest month, when rainfall can reach 14.6 in. November is typically the driest time to visit Kathmandu when rainfall is around 0.0 in.

Temperature in Kathmandu by month

Plan your trip to Kathmandu by taking into account the average temperature totals by month.

If weather is an important factor for your trip to Kathmandu, use this chart to help with planning. For those seeking warmer temperatures, June is the ideal time of year to visit, when temperatures reach an average of 73.4 F. Travelers looking to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 50.0 F).

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 April 29, 2025.
Peruse reviews from past customers who have flown with Singapore Airlines, Emirates and Qatar Airways from Washington, D.C. to Kathmandu to help guide your decision. In addition to providing an overall rating, users have also rated airlines in terms of entertainment options, comfort, food, crew/service, and boarding process.
Singapore Airlines
8.1
Very good
1,292 reviews

Crew

8.6

Boarding

8.2

Comfort

7.9

Entertainment

8.0

Food

7.7

Overall

8.1

Reviews

1 / 20
6.0
Good

Pierre,Apr 2025

MLE - SIN

3 boarding pass checkpoints at the gate. Long line before boarding. Poor leg room in economy.. Flight crew rounds practically non existent during flight.
Singapore Airlines
8.1
Very good
1,292 reviews
Singapore Airlines
8.1
Very good
1,292 reviews

Crew

8.6

Boarding

8.2

Comfort

7.9

Entertainment

8.0

Food

7.7

Overall

8.1

Reviews

1 / 20
6.0
Good

Pierre,Apr 2025

MLE - SIN

3 boarding pass checkpoints at the gate. Long line before boarding. Poor leg room in economy.. Flight crew rounds practically non existent during flight.
Emirates
8.0
Very good
3,213 reviews
Singapore Airlines
8.1
Very good
1,292 reviews

Crew

8.6

Boarding

8.2

Comfort

7.9

Entertainment

8.0

Food

7.7

Overall

8.1

Reviews

1 / 20
6.0
Good

Pierre,Apr 2025

MLE - SIN

3 boarding pass checkpoints at the gate. Long line before boarding. Poor leg room in economy.. Flight crew rounds practically non existent during flight.
Qatar Airways
7.4
Good
3,563 reviews
Singapore Airlines
8.1
Very good
1,292 reviews

Crew

8.6

Boarding

8.2

Comfort

7.9

Entertainment

8.0

Food

7.7

Overall

8.1

Reviews

1 / 20
6.0
Good

Pierre,Apr 2025

MLE - SIN

3 boarding pass checkpoints at the gate. Long line before boarding. Poor leg room in economy.. Flight crew rounds practically non existent during flight.
Etihad Airways
7.4
Good
1,203 reviews
Singapore Airlines
8.1
Very good
1,292 reviews

Crew

8.6

Boarding

8.2

Comfort

7.9

Entertainment

8.0

Food

7.7

Overall

8.1

Reviews

1 / 20
6.0
Good

Pierre,Apr 2025

MLE - SIN

3 boarding pass checkpoints at the gate. Long line before boarding. Poor leg room in economy.. Flight crew rounds practically non existent during flight.
IndiGo
6.8
Okay
474 reviews
Singapore Airlines
8.1
Very good
1,292 reviews

Crew

8.6

Boarding

8.2

Comfort

7.9

Entertainment

8.0

Food

7.7

Overall

8.1

Reviews

1 / 20
6.0
Good

Pierre,Apr 2025

MLE - SIN

3 boarding pass checkpoints at the gate. Long line before boarding. Poor leg room in economy.. Flight crew rounds practically non existent during flight.

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. 9 airlines have flights to Kathmandu Tribhuvan from Washington, D.C. Dulles Intl on a regular basis.

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

    IndiGo, at $1,191, was found to be the cheapest airline from Washington, D.C. Dulles Intl Airport to Kathmandu.Alternate airlines to your destination round-trip include Air India and Qatar Airways. These flights start at 21% 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?

    $633 is the cheapest one-way deal found within the past few days, from IndiGo. You may also be able to find cheap deals on Etihad Airways and Qatar Airways, with prices starting from $680 and $787, respectively.

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

    The most popular layover on flights from Washington, D.C. Dulles Intl Airport to Kathmandu is Doha. Doha is followed by New Delhi in terms of the most popular layover location on flights from Washington, D.C. Dulles Intl Airport to Kathmandu.

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

    Museum of Islamic Art, Katara Cultural Village, and Aspire Tower are currently the most popular points of interest in Doha at the moment. Museum of Islamic Art, Katara Cultural Village, and Aspire Tower can be visited by traveling about 5.2 mi, 8.7 mi, and 10.6 mi respectively from Doha Hamad Intl. Travelers can rent a car at Doha Hamad Intl for an average daily rate of $29 to make sightseeing during their layover a little easier.

  • 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 $62 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?

    Washington, D.C. Dulles Intl Airport to Kathmandu flights that have layovers will least frequently stop in Istanbul.

  • 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, September is the cheapest month in which you can book a flight from Washington, D.C. Dulles Intl Airport to Kathmandu (average of $1,237). Flying from Washington, D.C. Dulles Intl Airport to Kathmandu in June is currently the most expensive (average of $1,886). 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 Washington, D.C. Dulles Intl Airport?

Book flights to Washington, D.C. Dulles Intl Airport 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 Dulles Intl to Kathmandu

See prices for flight routes from nearby airports that may be better suited for you.
Reagan-National to Kathmandu flights
Baltimore to Kathmandu flights

Top 8 airlines flying from Dulles Intl to Kathmandu

Discover the top 8 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 April 29, 2025.
AirlineCheapestAverageFlexibilityOn-time
Etihad AirwaysCheapest$670Average$1,780FlexibilityNo cancel feeOn-time75%
Air IndiaCheapest$1,023Average$1,424FlexibilityNo cancel feeOn-timeN/A
Qatar AirwaysCheapest$1,133Average$1,436FlexibilityNo cancel feeOn-time68%
KLMCheapest$1,135Average$1,210FlexibilityNo cancel feeOn-time75%
IndiGoCheapest$1,180Average$1,339FlexibilityNo cancel feeOn-time80%
Turkish AirlinesCheapest$1,183Average$1,741FlexibilityNo cancel feeOn-time77%
EmiratesCheapest$1,316Average$1,711FlexibilityNo cancel feeOn-time75%
SWISSCheapest$1,652Average$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.