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Kathmandu

$504+ 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 9/3. Fares are subject to change and may not be available on all flights or dates of travel.
IAD — KTM
Jun 17 — Jun 241
Tue 6/17
Tue 6/24
1 adult, Economy
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Cheapflights Tip: The best prices from Washington, D.C. Dulles Intl to Kathmandu Tribhuvan are usually found in September or August, booked 76 days in advance, depart on a Saturday or Tuesday 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 June 12, 2025.

Round-trip from

$1,134
(oojo)

One-way from

$504
(FlightHub)

Popular in

December

Cheapest in

September

Average price

$1,682
From Washington, D.C. Dulles Intl to Kathmandu Tribhuvan
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One-way flight from Washington, D.C. Dulles Intl to Kathmandu Tribhuvan
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Highest demand for flights based on searches. 9% potential increase in price ($154 potential increase over avg. RT price).
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Cheapest flight prices on average. 3% potential price decrease ($46 potential savings vs. average RT price).
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Average for round-trip flights in June 2025
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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 June 12, 2025.

This FlightHub deal was found by Cheapflights users on 6/11. 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 10/2611:00 amIAD - KTM
1 stop33h 50mMultiple Airlines
Sat 11/11:45 pmKTM - IAD
1 stop27h 50mMultiple Airlines
Deal found 6/11$1,127
This oojo deal was found by Cheapflights users on 6/11. 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.
Sun 8/312:50 pmIAD - KTM
1 stop32h 00mAir India
Sat 8/167:35 amKTM - IAD
2 stops37h 25mAir India
Deal found 6/11$1,134
This FlightHub deal was found by Cheapflights users on 6/11. 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 8/89:40 pmIAD - KTM
2 stops32h 15mIndiGo
Tue 8/264:40 pmKTM - IAD
2 stops36h 50mIndiGo
Deal found 6/11$1,135
This Indian Eagle deal was found by Cheapflights users on 6/10. 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 Indian Eagle is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/410:55 amIAD - KTM
1 stop26h 25mEmirates
Tue 9/3011:55 pmKTM - IAD
1 stop42h 30mEmirates
Deal found 6/10$1,142
This FlightHub deal was found by Cheapflights users on 6/10. 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/119:00 pmIAD - KTM
1 stop26h 05mQatar Airways
Thu 11/206:45 pmKTM - IAD
1 stop31h 55mQatar Airways
Deal found 6/10$1,347

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 June 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

Sun 8/3

12:50 pm-6:35 am

1 stop32h 00m

Kathmandu Tribhuvan

Sat 8/16

7:35 am-11:15 am

2 stops37h 25m

$1,134

Washington, D.C.Kathmandu

IAD - KTM

IADKTM

Washington, D.C. Dulles Intl

Fri 8/8

9:40 pm-3:40 pm

2 stops32h 15m

Kathmandu Tribhuvan

Tue 8/26

4:40 pm-7:45 pm

2 stops36h 50m

$1,135

Washington, D.C.Kathmandu

IAD - KTM

IADKTM

Washington, D.C. Dulles Intl

Thu 9/4

10:55 am-11:05 pm

1 stop26h 25m

Kathmandu Tribhuvan

Tue 9/30

11:55 pm-8:40 am

1 stop42h 30m

$1,142

Washington, D.C.Kathmandu

IAD - KTM

IADKTM

Washington, D.C. Dulles Intl

Wed 8/6

11:00 am-6:30 am

3 stops33h 45m

Kathmandu Tribhuvan

Tue 9/16

4:40 pm-4:10 pm

2 stops33h 15m

$1,152

Washington, D.C.Kathmandu

IAD - KTM

IADKTM

Washington, D.C. Dulles Intl

Wed 9/3

1:30 pm-3:40 pm

2 stops40h 25m

$504

Washington, D.C.Kathmandu

IAD - KTM

IADKTM

Washington, D.C. Dulles Intl

Wed 9/10

9:40 pm-9:05 am

2 stops25h 40m

$512

Washington, D.C.Kathmandu

IAD - KTM

IADKTM

Washington, D.C. Dulles Intl

Fri 8/1

12:50 pm-11:00 pm

1 stop24h 25m

$534

Washington, D.C.Kathmandu

IAD - KTM

IADKTM

Washington, D.C. Dulles Intl

Wed 7/16

1:30 pm-6:15 am

1 stop31h 00m

$551

Washington, D.C.Kathmandu

IAD - KTM

IADKTM

Washington, D.C. Dulles Intl

Sun 7/27

10:05 pm-3:40 pm

1 stop31h 50m

$553

Washington, D.C.Kathmandu

IAD - KTM

IADKTM

Washington, D.C. Dulles Intl

Mon 8/4

9:00 pm-8:50 am

1 stop26h 05m

$756

Flights are sorted by cheapest round-trip flights first.

Deals found on 6/10

Showing 1-10 of 12 results
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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 June 9, 2025.

Booking 76 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 $1,735). 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 June 12, 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 June 12, 2025.
Peruse reviews from past customers who have flown with Emirates, SWISS 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.
Emirates
8.1
Very good
3,264 reviews

Entertainment

8.2

Overall

8.1

Boarding

8.1

Food

7.8

Crew

8.3

Comfort

8.0

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.
Emirates
8.1
Very good
3,264 reviews
Emirates
8.1
Very good
3,264 reviews

Entertainment

8.2

Overall

8.1

Boarding

8.1

Food

7.8

Crew

8.3

Comfort

8.0

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.
SWISS
7.5
Good
1,623 reviews
Emirates
8.1
Very good
3,264 reviews

Entertainment

8.2

Overall

8.1

Boarding

8.1

Food

7.8

Crew

8.3

Comfort

8.0

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.
Qatar Airways
7.4
Good
3,584 reviews
Emirates
8.1
Very good
3,264 reviews

Entertainment

8.2

Overall

8.1

Boarding

8.1

Food

7.8

Crew

8.3

Comfort

8.0

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.
Etihad Airways
7.4
Good
1,211 reviews
Emirates
8.1
Very good
3,264 reviews

Entertainment

8.2

Overall

8.1

Boarding

8.1

Food

7.8

Crew

8.3

Comfort

8.0

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.
Turkish Airlines
7.3
Good
3,848 reviews
Emirates
8.1
Very good
3,264 reviews

Entertainment

8.2

Overall

8.1

Boarding

8.1

Food

7.8

Crew

8.3

Comfort

8.0

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. 10 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?

    Air India, at $1,134, 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 23% 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?

    $504 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 $534 and $551, 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 $28 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 $51 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 $1,735). 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

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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.
Reagan-National to Kathmandu flights
Baltimore to Kathmandu flights

Top 9 airlines flying from Dulles Intl to Kathmandu

Discover the top 9 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 June 12, 2025.
AirlineCheapestAverageFlexibilityOn-time
Etihad AirwaysCheapest$777Average$1,634FlexibilityNo cancel feeOn-time75%
Air IndiaCheapest$926Average$1,388FlexibilityNo cancel feeOn-timeN/A
KLMCheapest$1,135Average$1,210FlexibilityNo cancel feeOn-time75%
Qatar AirwaysCheapest$1,145Average$1,448FlexibilityNo cancel feeOn-time68%
IndiGoCheapest$1,170Average$1,333FlexibilityNo cancel feeOn-time80%
Turkish AirlinesCheapest$1,183Average$1,732FlexibilityNo cancel feeOn-time77%
Singapore AirlinesCheapest$1,275Average$1,393FlexibilityNo cancel feeOn-time81%
EmiratesCheapest$1,316Average$1,709FlexibilityNo cancel feeOn-time75%
SWISSCheapest$1,324Average$1,663FlexibilityNo cancel feeOn-time79%

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