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Cheap flights from Washington, D.C. to Kathmandu from $424

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 1/18. 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
2:35 pm - 11:50 amIAD-KTM
34h 30m3 stops
Multiple Airlines Logo
10:50 am - 8:45 amKTM-IAD
31h 40m2 stops
$1,075Multiple Airlines
Find Deal
Tue, Feb 24 - Tue, Mar 31
Multiple Airlines Logo
2:35 pm - 9:05 amIAD-KTM
31h 45m3 stops
Multiple Airlines Logo
2:55 pm - 3:55 pmKTM-IAD
35h 45m3 stops
$1,086Multiple Airlines
Find Deal
Fri, Jan 9 - Sun, Jan 25
Multiple Airlines Logo
3:35 pm - 12:15 amIAD-KTM
22h 55m2 stops
Multiple Airlines Logo
5:30 pm - 7:25 pmKTM-IAD
35h 40m2 stops
$1,091Multiple Airlines
Find Deal
Sun, Mar 15 - Sun, Jul 12
Cathay Pacific Logo
6:35 pm - 9:30 pmDCA-KTM
40h 10m2 stops
Cathay Pacific Logo
10:55 pm - 6:59 pmKTM-DCA
29h 49m2 stops
$1,260Cathay Pacific
Find Deal
Mon, Feb 16 - Mon, Mar 16
Cathay Pacific Logo
9:35 am - 9:30 pmDCA-KTM
49h 10m2 stops
Cathay Pacific Logo
10:55 pm - 6:44 pmKTM-DCA
30h 34m2 stops
$1,282Cathay Pacific
Find Deal
Thu, Jan 22 - Mon, Jan 26
Qatar Airways Logo
6:00 am - 7:55 amBWI-KTM
39h 10m2 stops
Qatar Airways Logo
6:00 pm - 9:58 pmKTM-BWI
37h 43m2 stops
$1,358Qatar Airways
Find Deal
Mon, Feb 2 - Wed, Apr 1
Qatar Airways Logo
6:00 am - 4:25 pmBWI-KTM
47h 40m2 stops
Qatar Airways Logo
6:00 pm - 11:39 pmKTM-BWI
39h 24m2 stops
$1,378Qatar Airways
Find Deal
Wed, Jan 28 - Wed, Jun 3
Qatar Airways Logo
11:48 am - 4:25 pmBWI-KTM
42h 52m2 stops
Qatar Airways Logo
10:55 am - 9:32 pmKTM-BWI
44h 22m2 stops
$1,380Qatar Airways
Find Deal
Tue, Mar 24 - Mon, Apr 13
Cathay Pacific Logo
9:35 am - 9:30 pmDCA-KTM
49h 10m2 stops
Cathay Pacific Logo
10:55 pm - 6:59 pmKTM-DCA
30h 49m2 stops
$1,385Cathay Pacific
Find Deal
Fri, Jan 9 - Mon, Feb 23
Qatar Airways Logo
6:00 am - 4:25 pmBWI-KTM
47h 40m2 stops
Qatar Airways Logo
6:00 pm - 9:58 pmKTM-BWI
37h 43m2 stops
$1,389Qatar Airways
Find Deal
Wed, Feb 4 - Wed, Apr 1

IndiGo flights from Washington, D.C. to Kathmandu

Our best IndiGo deals on Washington, D.C. to Kathmandu flight tickets
IndiGo
Jan 8
IAD1:30 pmWashington, D.C. Dulles Intl
39h 55m
2 stops
KTM4:10 pmKathmandu Tribhuvan
Mar 9
KTM2:30 pmKathmandu Tribhuvan
39h 35m
2 stops
IAD8:20 pmWashington, D.C. Dulles Intl
$1,219
Find similar
IndiGo
Dec 2
IAD1:30 pmWashington, D.C. Dulles Intl
39h 55m
2 stops
KTM4:10 pmKathmandu Tribhuvan
Dec 16
KTM1:15 pmKathmandu Tribhuvan
40h 50m
2 stops
IAD7:20 pmWashington, D.C. Dulles Intl
$1,239
Find similar
IndiGo
Dec 2
IAD1:30 pmWashington, D.C. Dulles Intl
39h 55m
2 stops
KTM4:10 pmKathmandu Tribhuvan
Dec 10
KTM5:10 pmKathmandu Tribhuvan
36h 55m
2 stops
IAD7:20 pmWashington, D.C. Dulles Intl
$1,241
Find similar

Air India flights from Washington, D.C. to Kathmandu

Our best Air India deals on Washington, D.C. to Kathmandu flight tickets
Air India
Mar 25
DCA6:00 amWashington, D.C. Reagan-National
24h 45m
2 stops
KTM4:30 pmKathmandu Tribhuvan
Apr 8
KTM9:10 pmKathmandu Tribhuvan
35h 32m
2 stops
DCA10:57 pmWashington, D.C. Reagan-National
$1,538
Find similar
Air India
Mar 15
DCA6:00 amWashington, D.C. Reagan-National
32h 30m
2 stops
KTM12:15 amKathmandu Tribhuvan
Apr 1
KTM6:30 amKathmandu Tribhuvan
50h 12m
2 stops
DCA10:57 pmWashington, D.C. Reagan-National
$1,552
Find similar
Air India
Mar 26
DCA6:00 amWashington, D.C. Reagan-National
32h 30m
2 stops
KTM12:15 amKathmandu Tribhuvan
Apr 25
KTM5:30 pmKathmandu Tribhuvan
39h 12m
2 stops
DCA10:57 pmWashington, D.C. Reagan-National
$1,567
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 November 26, 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

Tue 2/24

2:35 pm-11:50 am

3 stops34h 30m

Kathmandu Tribhuvan

Tue 3/31

10:50 am-8:45 am

2 stops31h 40m

$1,075

Washington, D.C.Kathmandu

IAD - KTM

IADKTM

Washington, D.C. Dulles Intl

Fri 1/9

2:35 pm-9:05 am

3 stops31h 45m

Kathmandu Tribhuvan

Sun 1/25

2:55 pm-3:55 pm

3 stops35h 45m

$1,086

Washington, D.C.Kathmandu

IAD - KTM

IADKTM

Washington, D.C. Dulles Intl

Sun 3/15

3:35 pm-12:15 am

2 stops22h 55m

Kathmandu Tribhuvan

Sun 7/12

5:30 pm-7:25 pm

2 stops35h 40m

$1,091

Washington, D.C.Kathmandu

DCA - KTM

DCAKTM

Washington, D.C. Reagan-National

Mon 2/16

6:35 pm-9:30 pm

2 stops40h 10m

Kathmandu Tribhuvan

Mon 3/16

10:55 pm-6:59 pm

2 stops29h 49m

$1,260

Washington, D.C.Kathmandu

DCA - KTM

DCAKTM

Washington, D.C. Reagan-National

Thu 1/22

9:35 am-9:30 pm

2 stops49h 10m

Kathmandu Tribhuvan

Mon 1/26

10:55 pm-6:44 pm

2 stops30h 34m

$1,282

BaltimoreKathmandu

BWI - KTM

BWIKTM

Baltimore/Washington

Mon 2/2

6:00 am-7:55 am

2 stops39h 10m

Kathmandu Tribhuvan

Wed 4/1

6:00 pm-9:58 pm

2 stops37h 43m

$1,358

BaltimoreKathmandu

BWI - KTM

BWIKTM

Baltimore/Washington

Wed 1/28

6:00 am-4:25 pm

2 stops47h 40m

Kathmandu Tribhuvan

Wed 6/3

6:00 pm-11:39 pm

2 stops39h 24m

$1,378

BaltimoreKathmandu

BWI - KTM

BWIKTM

Baltimore/Washington

Tue 3/24

11:48 am-4:25 pm

2 stops42h 52m

Kathmandu Tribhuvan

Mon 4/13

10:55 am-9:32 pm

2 stops44h 22m

$1,380

Washington, D.C.Kathmandu

DCA - KTM

DCAKTM

Washington, D.C. Reagan-National

Fri 1/9

9:35 am-9:30 pm

2 stops49h 10m

Kathmandu Tribhuvan

Mon 2/23

10:55 pm-6:59 pm

2 stops30h 49m

$1,385

BaltimoreKathmandu

BWI - KTM

BWIKTM

Baltimore/Washington

Wed 2/4

6:00 am-4:25 pm

2 stops47h 40m

Kathmandu Tribhuvan

Wed 4/1

6:00 pm-9:58 pm

2 stops37h 43m

$1,389

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 typical price of a round-trip flight between Washington, D.C. and Kathmandu?

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 $1,442 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 $1,232 on momondo.

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

You could potentially save up to 6% 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 November 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 21h 40m.

  • 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 $859Free CancellationRating
5.5
2,947 reviews
Search Air India flights
IndiGoPriceFrom $988Free CancellationRating
6.8
499 reviews
Search IndiGo flights
EmiratesPriceFrom $1,092Free CancellationRating
8.1
3,421 reviews
Search Emirates flights
Turkish AirlinesPriceFrom $1,157Free CancellationRating
7.3
4,059 reviews
Search Turkish Airlines flights
Qatar AirwaysPriceFrom $1,228Free CancellationRating
7.4
3,675 reviews
Search Qatar Airways flights
Etihad AirwaysPriceFrom $1,403Free CancellationRating
7.4
1,312 reviews
Search Etihad Airways flights
SWISSPriceFrom $1,611Free CancellationRating
7.5
1,794 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 $1,228
Air India
Turkish Airlines
Emirates
IndiGo
SWISS
Etihad Airways