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Cheap flights from Washington, D.C. to Kathmandu from $409

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Washington, D.C. to Kathmandu departing on 1/25. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
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Find the cheapest flights from Washington, D.C. to Kathmandu

Cheap round-trip flights

Enter your travel dates to find the best prices.
Multiple Airlines Logo
6:10 pm - 11:50 am
IAD
-
KTM
30h 55m3 stops
Multiple Airlines Logo
10:05 am - 9:05 am
KTM
-
IAD
33h 45m2 stops
$1,138Multiple Airlines
Sat, Jan 17 - Tue, Jan 27
Air India Logo
6:05 am - 4:30 pm
DCA
-
KTM
24h 40m2 stops
Air India Logo
5:30 pm - 10:59 pm
KTM
-
DCA
39h 14m2 stops
$1,139Air India
Thu, Apr 16 - Sat, May 30
Multiple Airlines Logo
6:30 am - 4:30 pm
DCA
-
KTM
24h 15m2 stops
Multiple Airlines Logo
5:30 pm - 10:59 pm
KTM
-
DCA
39h 14m2 stops
$1,142Multiple Airlines
Wed, Apr 29 - Tue, May 12
Multiple Airlines Logo
3:35 pm - 6:35 am
IAD
-
KTM
29h 15m3 stops
Multiple Airlines Logo
6:30 am - 8:40 am
KTM
-
IAD
35h 55m2 stops
$1,142Multiple Airlines
Wed, Mar 18 - Sat, Apr 18
Multiple Airlines Logo
3:35 pm - 9:30 am
IAD
-
KTM
32h 10m1 stop
Multiple Airlines Logo
5:30 pm - 9:45 am
KTM
-
IAD
26h 00m2 stops
$1,150Multiple Airlines
Thu, May 7 - Sun, Jun 7
Air India Logo
6:05 am - 8:10 pm
DCA
-
KTM
28h 20m2 stops
Air India Logo
2:00 pm - 10:59 pm
KTM
-
DCA
42h 44m2 stops
$1,169Air India
Thu, Apr 16 - Fri, May 29
Cathay Pacific Logo
11:54 am - 9:45 pm
DCA
-
KTM
48h 06m2 stops
Cathay Pacific Logo
11:00 pm - 10:15 pm
KTM
-
DCA
33h 00m2 stops
$1,248Cathay Pacific
Tue, Apr 14 - Tue, May 12
Cathay Pacific Logo
7:01 pm - 9:45 pm
DCA
-
KTM
40h 59m2 stops
Cathay Pacific Logo
11:00 pm - 10:15 pm
KTM
-
DCA
33h 00m2 stops
$1,277Cathay Pacific
Tue, Apr 28 - Tue, May 12
Qatar Airways Logo
6:00 am - 7:55 am
BWI
-
KTM
39h 10m2 stops
Qatar Airways Logo
5:40 pm - 9:46 pm
KTM
-
BWI
38h 51m2 stops
$1,354Qatar Airways
Thu, Feb 5 - Thu, Feb 26
Qatar Airways Logo
6:00 am - 7:55 am
BWI
-
KTM
39h 10m2 stops
Qatar Airways Logo
7:05 pm - 9:46 pm
KTM
-
BWI
37h 26m2 stops
$1,368Qatar Airways
Thu, Feb 5 - Thu, Feb 26

Qatar Airways flights from Washington, D.C. to Kathmandu

Our best Qatar Airways deals on Washington, D.C. to Kathmandu flight tickets
Qatar Airways
Feb 5
BWI6:00 amBaltimore/Washington
39h 10m
2 stops
KTM7:55 amKathmandu Tribhuvan
Feb 26
KTM5:40 pmKathmandu Tribhuvan
38h 51m
2 stops
BWI9:46 pmBaltimore/Washington
$1,354
Find similar
Qatar Airways
Feb 5
BWI6:00 amBaltimore/Washington
39h 10m
2 stops
KTM7:55 amKathmandu Tribhuvan
Feb 26
KTM7:05 pmKathmandu Tribhuvan
37h 26m
2 stops
BWI9:46 pmBaltimore/Washington
$1,368
Find similar
Qatar Airways
Jan 26
BWI6:00 amBaltimore/Washington
39h 10m
2 stops
KTM7:55 amKathmandu Tribhuvan
Feb 5
KTM5:40 pmKathmandu Tribhuvan
40h 57m
2 stops
BWI11:52 pmBaltimore/Washington
$1,375
Find similar

Singapore Airlines flights from Washington, D.C. to Kathmandu

Our best Singapore Airlines deals on Washington, D.C. to Kathmandu flight tickets
Singapore Airlines
Apr 19
BWI6:18 pmBaltimore/Washington
41h 42m
2 stops
KTM9:45 pmKathmandu Tribhuvan
May 31
KTM11:00 pmKathmandu Tribhuvan
51h 32m
2 stops
BWI4:47 pmBaltimore/Washington
$1,571
Find similar
Singapore Airlines
Apr 19
BWI6:18 pmBaltimore/Washington
41h 42m
2 stops
KTM9:45 pmKathmandu Tribhuvan
May 31
KTM11:00 pmKathmandu Tribhuvan
51h 32m
3 stops
BWI4:47 pmBaltimore/Washington
$1,690
Find similar
Singapore Airlines
Dec 24
BWI8:00 amBaltimore/Washington
51h 15m
2 stops
KTM10:00 pmKathmandu Tribhuvan
Jan 20
KTM11:00 pmKathmandu Tribhuvan
33h 11m
3 stops
BWI9:26 pmBaltimore/Washington
$4,181
Find similar

momondo 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, momondo users made 832,500 searches. Data last updated December 11, 2025.
Use the filters below to find and compare flights from Washington, D.C. to Kathmandu that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Washington, D.C.Kathmandu

IAD - KTM

IADKTM

Washington, D.C. Dulles Intl

Sat 1/17

6:10 pm-11:50 am

3 stops30h 55m

Kathmandu Tribhuvan

Tue 1/27

10:05 am-9:05 am

2 stops33h 45m

$1,138

Washington, D.C.Kathmandu

DCA - KTM

DCAKTM

Washington, D.C. Reagan-National

Thu 4/16

6:05 am-4:30 pm

2 stops24h 40m

Kathmandu Tribhuvan

Sat 5/30

5:30 pm-10:59 pm

2 stops39h 14m

$1,139

Washington, D.C.Kathmandu

DCA - KTM

DCAKTM

Washington, D.C. Reagan-National

Wed 4/29

6:30 am-4:30 pm

2 stops24h 15m

Kathmandu Tribhuvan

Tue 5/12

5:30 pm-10:59 pm

2 stops39h 14m

$1,142

Washington, D.C.Kathmandu

IAD - KTM

IADKTM

Washington, D.C. Dulles Intl

Wed 3/18

3:35 pm-6:35 am

3 stops29h 15m

Kathmandu Tribhuvan

Sat 4/18

6:30 am-8:40 am

2 stops35h 55m

$1,142

Washington, D.C.Kathmandu

IAD - KTM

IADKTM

Washington, D.C. Dulles Intl

Thu 5/7

3:35 pm-9:30 am

1 stop32h 10m

Kathmandu Tribhuvan

Sun 6/7

5:30 pm-9:45 am

2 stops26h 00m

$1,150

Washington, D.C.Kathmandu

DCA - KTM

DCAKTM

Washington, D.C. Reagan-National

Thu 4/16

6:05 am-8:10 pm

2 stops28h 20m

Kathmandu Tribhuvan

Fri 5/29

2:00 pm-10:59 pm

2 stops42h 44m

$1,169

Washington, D.C.Kathmandu

DCA - KTM

DCAKTM

Washington, D.C. Reagan-National

Tue 4/14

11:54 am-9:45 pm

2 stops48h 06m

Kathmandu Tribhuvan

Tue 5/12

11:00 pm-10:15 pm

2 stops33h 00m

$1,248

Washington, D.C.Kathmandu

DCA - KTM

DCAKTM

Washington, D.C. Reagan-National

Tue 4/28

7:01 pm-9:45 pm

2 stops40h 59m

Kathmandu Tribhuvan

Tue 5/12

11:00 pm-10:15 pm

2 stops33h 00m

$1,277

BaltimoreKathmandu

BWI - KTM

BWIKTM

Baltimore/Washington

Thu 2/5

6:00 am-7:55 am

2 stops39h 10m

Kathmandu Tribhuvan

Thu 2/26

5:40 pm-9:46 pm

2 stops38h 51m

$1,354

BaltimoreKathmandu

BWI - KTM

BWIKTM

Baltimore/Washington

Thu 2/5

6:00 am-7:55 am

2 stops39h 10m

Kathmandu Tribhuvan

Thu 2/26

7:05 pm-9:46 pm

2 stops37h 26m

$1,368

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first
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See travel insights to Kathmandu from

How to get the cheapest flight ticket from Washington, D.C. to Kathmandu

Look no further. We've gone through all the searches for this route on momondo so you have the important information and insights to find the cheapest flight ticket for your trip

What is the cheapest month to fly to Kathmandu?

The month of October is another great option to travel to Kathmandu, with average flight prices from Washington, D.C. averaging around $1,270.

What is the cheapest day to depart on your flight to Kathmandu?

According to our data, Tuesday is the cheapest day to fly to Kathmandu from Washington, D.C.. The lowest ticket price found for a Tuesday departure recently was $1,295. Keep in mind that prices can always vary depending on your route and whether or not you are flying domestic or international. Flights from Washington, D.C. to Kathmandu on a Thursday will generally be more expensive and average around $1,464. Keep in mind that these prices on both days could fluctuate depending on the season and the demand.

What is the cheapest time of day to depart on your flight to Kathmandu?

In the afternoon is the cheapest time of day to fly from Washington, D.C. to Kathmandu when you can find flight prices for as low as $1,501. Flying to Kathmandu in the afternoon is an ideal time because this is during off-peak travel hours. Flights at noon are often more expensive with an average ticket price of $1,696.

How far in advance should I book a flight to Kathmandu?

You are more likely to see cheaper flights to Kathmandu from Washington, D.C. when booking weeks ahead of your departure date. In general, you can expect to find flights to Kathmandu for around $1,438 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Kathmandu from Washington, D.C. for as low as $1,223 on momondo.

Can stopping save me money on Washington, D.C. to Kathmandu flights?

You could potentially save up to 10% on your flight if you consider stops on a Washington, D.C. to Kathmandu flight.

How have Washington, D.C. to Kathmandu flight prices changed over time?

As of December 2025, prices for Washington, D.C. to Kathmandu flights are approximately 22% more expensive when compared to flights at the same time last year.

When to book flights from Washington, D.C. to Kathmandu

Are you open to changing your travel dates? Check out the ideal times to fly from Washington, D.C. to Kathmandu according to our flight data. Find out which month and days have the cheapest flights.
Estimated round-trip price

Cheap Washington, D.C. to Kathmandu (WAS to KTM) flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from Washington, D.C. to Kathmandu

Fastest flight time

19h 00m

Direct flights

None
The fastest flight from Washington, D.C. to Kathmandu takes 19h 00m
There are no direct flights from Washington, D.C. to Kathmandu. There are no popular flight routes from Washington, D.C. to Kathmandu.
Search flight deals

  • How far is Washington, D.C. to Kathmandu Tribhuvan by plane?

    A flight from Washington, D.C. to Kathmandu Tribhuvan will travel around 7689.5 mi. A reasonable flight in good conditions will take 19h 00m.

  • When did momondo last update prices for flights from Washington, D.C. to Kathmandu Tribhuvan Airport?

    Prices for flights from Washington, D.C. to Kathmandu Tribhuvan Airport were last updated today.

  • How many operators does momondo search for flights from Washington, D.C. to Kathmandu Tribhuvan Airport?

  • How old do you have to be to fly from Washington, D.C. to Kathmandu Tribhuvan Airport?

    The minimum age for a child to fly alone is five, but airlines that offer an unaccompanied minor (UNMR) service may have their own age limitations. Flight duration, scheduling, and layovers are among the considerations that may influence age limits. We recommend that you double-check with the airline you are booking with for travel from Washington, D.C. to Kathmandu Tribhuvan Airport.

  • What documentation or ID do you need to fly to Kathmandu Tribhuvan Airport?

    The required travel and health documents for your Kathmandu Tribhuvan Airport trip may vary depending on your itinerary and personal circumstances. As a general rule, you should carry multiple documents, including a national ID card or driver's license and a passport valid for six months after your intended arrival at Kathmandu Tribhuvan Airport. We recommend that you seek guidance from your airline or a reliable third party such as IATA.

  • What is the most popular airline from Washington, D.C. to Kathmandu?

Best airlines flying from Washington, D.C. to Kathmandu

Compare and see reviews for airlines that fly from Washington, D.C. to Kathmandu with momondo
Airline
Rating
Free Cancellation
Price
Air IndiaPriceFrom $858Free CancellationRating
5.5
2,947 reviews
Search Air India flights
IndiGoPriceFrom $988Free CancellationRating
6.8
507 reviews
Search IndiGo flights
EmiratesPriceFrom $1,092Free CancellationRating
8.1
3,434 reviews
Search Emirates flights
Turkish AirlinesPriceFrom $1,154Free CancellationRating
7.3
4,090 reviews
Search Turkish Airlines flights
Qatar AirwaysPriceFrom $1,233Free CancellationRating
7.4
3,677 reviews
Search Qatar Airways flights
Etihad AirwaysPriceFrom $1,449Free CancellationRating
7.4
1,331 reviews
Search Etihad Airways flights
SWISSPriceFrom $1,611Free CancellationRating
7.5
1,810 reviews
Search SWISS flights

Traveling to a place near Kathmandu?

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

Why use momondo?

Why should I use momondo to find a flight deal from Washington, D.C. to Kathmandu?

Finding the right flight to Kathmandu from Washington, D.C. is quick and easy when you have a range of options in front of you, from reputable agents and recognisable airlines. Options that can then be filtered down to find the best fit. That is what momondo does. We make finding flights to Kathmandu quick and easy, saving you time and money.

Can I find flights from Washington, D.C. to Kathmandu with flexible booking policies on momondo?

Yes. All flights to Kathmandu from Washington, D.C. on momondo can be compared and filtered by various policies on offer, including flexible booking.

How can momondo help me find flights from Washington, D.C. to Kathmandu?

momondo provides multiple filters to help you find the best flight to Kathmandu from Washington, D.C.. Filter by price, airline, airports, cabin, aircraft, payment method, number of stops and more.

I’m not ready to book a flight from Washington, D.C. to Kathmandu right now. Can momondo alert me if prices change?

Price alerts on flights to Kathmandu from Washington, D.C. are quick and easy to set up on momondo. Simply perform a search and select the price alert feature. It is as simple as that.

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Fly your favorite airline to Kathmandu

Airlines are sorted and displayed according to clicks in the past 7 days on momondo
Qatar Airways flights from Washington, D.C. to Kathmandufrom $1,233
Air India
Emirates
Turkish Airlines
IndiGo
SWISS
Etihad Airways