$535 Cheap Flights from Washington (IAD) to Kathmandu (KTM)

View $535 flight on Wed, Nov 26, 2025Opens in a new window

Popular airlines from Washington Dulles Intl. Airport (IAD) to Tribhuvan Intl. Airport (KTM)

Cheap Flights from Washington to Kathmandu (IAD-KTM)

Prices were available within the past 7 days and start at $535 for one-way flights and $1,265 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Etihad Airways
Wed, Nov 26 - Wed, Dec 3
IAD
Washington
KTM
Kathmandu
$1,265 Roundtrip, just found
$1,265
Roundtrip
just found
Select Etihad Airways flight, departing Wed, Nov 26 from Washington to Kathmandu, returning Wed, Dec 3, priced at $1,265 just found
Etihad Airways
Wed, Nov 26 - Sun, Dec 21
IAD
Washington
KTM
Kathmandu
$1,273 Roundtrip, found 7 hours ago
$1,273
Roundtrip
found 7 hours ago
Select Etihad Airways flight, departing Wed, Nov 26 from Washington to Kathmandu, returning Sun, Dec 21, priced at $1,273 found 7 hours ago
Etihad Airways
Wed, Nov 26 - Thu, Dec 25
IAD
Washington
KTM
Kathmandu
$1,279 Roundtrip, found 1 day ago
$1,279
Roundtrip
found 1 day ago
Select Etihad Airways flight, departing Wed, Nov 26 from Washington to Kathmandu, returning Thu, Dec 25, priced at $1,279 found 1 day ago
Etihad Airways
Thu, Jan 29 - Fri, Feb 13
IAD
Washington
KTM
Kathmandu
$1,281 Roundtrip, found 20 hours ago
$1,281
Roundtrip
found 20 hours ago
Select Etihad Airways flight, departing Thu, Jan 29 from Washington to Kathmandu, returning Fri, Feb 13, priced at $1,281 found 20 hours ago
Etihad Airways
Thu, Feb 5 - Mon, Mar 2
IAD
Washington
KTM
Kathmandu
$1,282 Roundtrip, found 2 hours ago
$1,282
Roundtrip
found 2 hours ago
Select Etihad Airways flight, departing Thu, Feb 5 from Washington to Kathmandu, returning Mon, Mar 2, priced at $1,282 found 2 hours ago
Cathay Pacific
Tue, Nov 25 - Tue, Feb 17
IAD
Washington
KTM
Kathmandu
$1,282 Roundtrip, found 5 days ago
$1,282
Roundtrip
found 5 days ago
Select Cathay Pacific flight, departing Tue, Nov 25 from Washington to Kathmandu, returning Tue, Feb 17, priced at $1,282 found 5 days ago
Etihad Airways
Thu, Mar 5 - Fri, Mar 27
IAD
Washington
KTM
Kathmandu
$1,283 Roundtrip, found 5 days ago
$1,283
Roundtrip
found 5 days ago
Select Etihad Airways flight, departing Thu, Mar 5 from Washington to Kathmandu, returning Fri, Mar 27, priced at $1,283 found 5 days ago
Turkish Airlines
Tue, Nov 11 - Tue, Dec 9
IAD
Washington
KTM
Kathmandu
$1,314 Roundtrip, found 15 hours ago
$1,314
Roundtrip
found 15 hours ago
Select Turkish Airlines flight, departing Tue, Nov 11 from Washington to Kathmandu, returning Tue, Dec 9, priced at $1,314 found 15 hours ago
Emirates
Mon, Nov 10 - Fri, Nov 14
IAD
Washington
KTM
Kathmandu
$1,324 Roundtrip, just found
$1,324
Roundtrip
just found
Select Emirates flight, departing Mon, Nov 10 from Washington to Kathmandu, returning Fri, Nov 14, priced at $1,324 just found
Qatar Airways
Tue, Jan 27 - Thu, Feb 19
IAD
Washington
KTM
Kathmandu
$1,494 Roundtrip, just found
$1,494
Roundtrip
just found
Select Qatar Airways flight, departing Tue, Jan 27 from Washington to Kathmandu, returning Thu, Feb 19, priced at $1,494 just found

Find the cheapest month to fly from Washington (IAD) to Kathmandu (KTM)

September is typically the cheapest month to fly

From $900 - $1,885 per traveler.

Alternative airports near Kathmandu

Prices were available within the past 7 days. Prices and availability are subject to change.

Select flight to Tribhuvan Intl. KTM. Cheapest and Closest option available. Average driving time to city center is 6 minutes. Flights from $1,465
KTM
Tribhuvan Intl.
CheapestClosest
Average driving time to city center6 min
Flights from $1,465
Flights from Washington (IAD) to Kathmandu (KTM)
Origin airport
Washington Dulles Intl.
Destination airport
Tribhuvan Intl.
Airlines serving
Air China, Cathay Pacific, Emirates, Etihad Airways, KLM, Korean Air, Qatar Airways, SriLankan Airlines, Swiss International Air Lines, Turkish Airlines
Roundtrip price
$1,265
Distance
7699 mi

Washington to Kathmandu Flights

The cheapest times to fly from Washington to Kathmandu

On average, Thursday can be the cheapest time to fly, according to data from the Airlines Reporting Corporation (ARC), one of the world's biggest databases for global airline sales. The data reveals that you could save up to 16% by flying on a Thursday—the cheapest day to travel on average—instead of a Sunday—the most expensive. Some of the most affordable flights from Washington to Kathmandu are during the month of November. You can find some of the cheapest flights from Washington to Kathmandu with Expedia's search tool and vast selection of airlines.

 

The best time to book a flight from Washington to Kathmandu

Sunday is one of the best days to book for cheap flights from Washington to Kathmandu: Tickets reserved on a Sunday cost between 6% and 13% less than those reserved on a Friday, according to ARC data. The data also suggests booking early can also lead to cheaper airfares. You could save 24% by buying your tickets for domestic flights at least a month in advance and 10% by booking international flights 2 months in advance.

 

How to find cheap round-trip tickets from Washington to Kathmandu

Being flexible with your dates and using Expedia's Price Drop Protection and Price Tracking features are some of the best ways of finding a cheap ticket from Washington to Kathmandu in 2025. You can also book with separate airlines for your outbound and return journeys, from $535 one-way. Expedia also offers Price Drop Protection, so if the cost of your airfare goes down after booking, you'll receive a credit for the difference*. This is available for a small fee, and is free to One Key Gold and Platinum tier members.

 

Expedia's Price Tracking feature means you can stay on top of airfares without manually checking every day. It sends you automated price alerts for cheap Washington to Kathmandu flights and uses historical data to indicate when the best time to book is. Download Expedia's free app to activate this handy tool in a few easy taps.

 

You could also save big by booking one of Expedia's vacation packages. Bundling together your Washington to Kathmandu airfare with your accommodations and car rental is often cheaper than booking everything separately. There’s also One Key, Expedia's generous rewards program. Join for free and you could earn One Key cash on most bookings to save on future adventures.

 

*Terms apply.

 

Disclaimer: ARC The statistics are based on average round-trip ticket prices between January and August 2023. The percentages you see are averages.

 

Frequently asked questions

How much does a flight from Washington Dulles Intl. Airport (IAD) to Tribhuvan Intl. Airport (KTM) cost?
Secure a cheap one-way flight from $535 or cheap return flight from $1,265 from Washington Dulles Intl. Airport (IAD) to Tribhuvan Intl. Airport (KTM) with Expedia. Enter your travel dates and sort by "Price (lowest to highest)" to see our cheapest flight deals on this route.
What is the cheapest month to fly from Washington Dulles Intl. Airport (IAD) to Tribhuvan Intl. Airport (KTM)?
Flying in November may help you find better deals, as it's the cheapest month for flights between IAD and KTM. You'll often find the lowest fares during off-peak months.
What is the cheapest airline that flies from Washington Dulles Intl. Airport (IAD) to Tribhuvan Intl. Airport (KTM)?
Use the filter tool on Expedia to compare airlines and find the most affordable carrier that'll take you from IAD to KTM. Then, sort your results by "Price (lowest to highest)" to score a good deal.
How many flights per day from Washington Dulles Intl. Airport (IAD) to Tribhuvan Intl. Airport (KTM)?
There are no daily nonstop flights available from Washington Dulles Intl. Airport (IAD) to Tribhuvan Intl. Airport (KTM). But you can choose flights with layovers. Filter your search on Expedia to include one or two stops, and you'll be on your way before you know it.
What day of the week has the most flights from IAD to KTM?
Friday is generally the busiest day for flights, while Tuesday is often the quietest.* Keep in mind that flight schedules can vary based on a range of factors, such as the carrier and season.*Busiest/quietest day to travel is based on Expedia flight demand through January to December 2024.
What is the best time to fly from Washington Dulles Intl. Airport (IAD) to Tribhuvan Intl. Airport (KTM)?
To avoid potential delays on the Washington Dulles Intl. Airport (IAD) to Tribhuvan Intl. Airport (KTM) route, fly before 3 PM. Flights after this time have a 22% higher chance of being canceled.**Most reliable time of the day and month to travel recommendation is based on January through August 2024 flight status data sourced from OAG's global flight data platform.
Is it cheaper to buy a plane ticket from Washington Dulles Intl. Airport (IAD) to Tribhuvan Intl. Airport (KTM) last-minute?
Last-minute fares from IAD to KTM are generally more expensive. To secure the lowest rates, start searching for flights well in advance. That said, if you're flexible with your travel plans, it's possible to score a cheap ticket just before your departure.
Is it cheaper to book an IAD to KTM flight and hotel package?
Compared with arranging flights and hotels separately, booking an IAD to KTM flight and hotel package with Expedia could lead to significant savings. Better yet, having it all in one place takes the hassle out of planning your trip. Simply pick your flights and choose from our wide range of hotels, then customize your trip with other add-ons like activities, tours and car rentals.
Can I cancel or change the date of my flight from Washington Dulles Intl. Airport (IAD) to Tribhuvan Intl. Airport (KTM)?
In most cases, you can reschedule or cancel your IAD to KTM flight. However, there may be additional fees, especially if you made your booking more than 24 hours ago. Check your itinerary for the airline's rules and fees on flight changes, or if you want more details, head to our Customer Service portal.

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*Available to One Key members.