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Cheap flights from Boston to Kathmandu from $429

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Boston to Kathmandu departing on 1/30. 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 Boston to Kathmandu

Cheap round-trip flights

Enter your travel dates to find the best prices.
Multiple Airlines Logo
8:00 pm - 9:50 amBOS-KTM
27h 05m2 stops
Multiple Airlines Logo
4:40 pm - 2:55 pmKTM-BOS
32h 00m2 stops
$1,061Multiple Airlines
Find Deal
Wed, Jan 7 - Tue, Apr 28
Multiple Airlines Logo
3:40 pm - 9:05 amBOS-KTM
30h 40m3 stops
Multiple Airlines Logo
2:45 pm - 3:10 pmKTM-BOS
34h 10m3 stops
$1,067Multiple Airlines
Find Deal
Tue, Feb 10 - Tue, Mar 17
Multiple Airlines Logo
3:40 pm - 12:15 amBOS-KTM
21h 50m2 stops
Multiple Airlines Logo
5:10 pm - 6:05 pmKTM-BOS
35h 40m2 stops
$1,068Multiple Airlines
Find Deal
Sun, Jan 25 - Fri, Feb 20
Multiple Airlines Logo
3:40 pm - 9:05 amBOS-KTM
30h 40m3 stops
Multiple Airlines Logo
2:45 pm - 2:10 pmKTM-BOS
34h 10m3 stops
$1,070Multiple Airlines
Find Deal
Fri, Jan 9 - Mon, Feb 23
Multiple Airlines Logo
3:40 pm - 9:50 amBOS-KTM
31h 25m3 stops
Multiple Airlines Logo
2:55 pm - 2:10 pmKTM-BOS
34h 00m3 stops
$1,072Multiple Airlines
Find Deal
Mon, Jan 5 - Fri, Jan 30
IndiGo Logo
8:00 pm - 9:50 amBOS-KTM
27h 05m2 stops
IndiGo Logo
1:15 pm - 6:05 pmKTM-BOS
39h 35m2 stops
$1,079IndiGo
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Tue, Dec 2 - Wed, Dec 10
Multiple Airlines Logo
3:40 pm - 9:50 amBOS-KTM
31h 25m3 stops
Multiple Airlines Logo
1:45 pm - 2:10 pmKTM-BOS
35h 10m2 stops
$1,081Multiple Airlines
Find Deal
Thu, Jan 1 - Sun, Feb 1
Multiple Airlines Logo
3:40 pm - 9:05 amBOS-KTM
30h 40m3 stops
Multiple Airlines Logo
3:05 pm - 2:55 pmKTM-BOS
33h 35m3 stops
$1,084Multiple Airlines
Find Deal
Wed, Jan 7 - Tue, Apr 28
Multiple Airlines Logo
3:40 pm - 1:30 pmBOS-KTM
35h 05m3 stops
Multiple Airlines Logo
2:45 pm - 2:10 pmKTM-BOS
34h 10m2 stops
$1,088Multiple Airlines
Find Deal
Mon, Jan 5 - Fri, Jan 30
Multiple Airlines Logo
8:00 pm - 12:15 pmBOS-KTM
29h 30m2 stops
Multiple Airlines Logo
2:30 pm - 2:10 pmKTM-BOS
34h 25m2 stops
$1,101Multiple Airlines
Find Deal
Sat, Jan 10 - Fri, Jan 30

Singapore Airlines flights from Boston to Kathmandu

Our best Singapore Airlines deals on Boston to Kathmandu flight tickets
Singapore Airlines
Mar 4
BOS2:16 pmBoston Logan Intl
44h 39m
3 stops
KTM9:40 pmKathmandu Tribhuvan
Apr 26
KTM11:00 pmKathmandu Tribhuvan
40h 48m
2 stops
BOS6:03 amBoston Logan Intl
$1,101
Find similar
Singapore Airlines
Mar 10
BOS2:16 pmBoston Logan Intl
45h 49m
3 stops
KTM9:50 pmKathmandu Tribhuvan
Apr 10
KTM11:00 pmKathmandu Tribhuvan
40h 48m
2 stops
BOS6:03 amBoston Logan Intl
$1,156
Find similar

IndiGo flights from Boston to Kathmandu

Our best IndiGo deals on Boston to Kathmandu flight tickets
IndiGo
Dec 2
BOS8:00 pmBoston Logan Intl
27h 05m
2 stops
KTM9:50 amKathmandu Tribhuvan
Dec 10
KTM1:15 pmKathmandu Tribhuvan
39h 35m
2 stops
BOS6:05 pmBoston Logan Intl
$1,079
Find similar
IndiGo
Jan 13
BOS8:00 pmBoston Logan Intl
27h 05m
2 stops
KTM9:50 amKathmandu Tribhuvan
Feb 19
KTM2:30 pmKathmandu Tribhuvan
38h 20m
2 stops
BOS6:05 pmBoston Logan Intl
$1,149
Find similar
IndiGo
Jan 11
BOS8:00 pmBoston Logan Intl
33h 25m
2 stops
KTM4:10 pmKathmandu Tribhuvan
Feb 5
KTM10:50 amKathmandu Tribhuvan
42h 00m
2 stops
BOS6:05 pmBoston Logan Intl
$1,150
Find similar

momondo Fare Finder

 
Customize your flight search to find flights from Boston 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 Boston to Kathmandu that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

BostonKathmandu

BOS - KTM

BOSKTM

Boston Logan Intl

Wed 1/7

8:00 pm-9:50 am

2 stops27h 05m

Kathmandu Tribhuvan

Tue 4/28

4:40 pm-2:55 pm

2 stops32h 00m

$1,061

BostonKathmandu

BOS - KTM

BOSKTM

Boston Logan Intl

Tue 2/10

3:40 pm-9:05 am

3 stops30h 40m

Kathmandu Tribhuvan

Tue 3/17

2:45 pm-3:10 pm

3 stops34h 10m

$1,067

BostonKathmandu

BOS - KTM

BOSKTM

Boston Logan Intl

Sun 1/25

3:40 pm-12:15 am

2 stops21h 50m

Kathmandu Tribhuvan

Fri 2/20

5:10 pm-6:05 pm

2 stops35h 40m

$1,068

BostonKathmandu

BOS - KTM

BOSKTM

Boston Logan Intl

Fri 1/9

3:40 pm-9:05 am

3 stops30h 40m

Kathmandu Tribhuvan

Mon 2/23

2:45 pm-2:10 pm

3 stops34h 10m

$1,070

BostonKathmandu

BOS - KTM

BOSKTM

Boston Logan Intl

Mon 1/5

3:40 pm-9:50 am

3 stops31h 25m

Kathmandu Tribhuvan

Fri 1/30

2:55 pm-2:10 pm

3 stops34h 00m

$1,072

BostonKathmandu

BOS - KTM

BOSKTM

Boston Logan Intl

Tue 12/2

8:00 pm-9:50 am

2 stops27h 05m

Kathmandu Tribhuvan

Wed 12/10

1:15 pm-6:05 pm

2 stops39h 35m

$1,079

BostonKathmandu

BOS - KTM

BOSKTM

Boston Logan Intl

Thu 1/1

3:40 pm-9:50 am

3 stops31h 25m

Kathmandu Tribhuvan

Sun 2/1

1:45 pm-2:10 pm

2 stops35h 10m

$1,081

BostonKathmandu

BOS - KTM

BOSKTM

Boston Logan Intl

Wed 1/7

3:40 pm-9:05 am

3 stops30h 40m

Kathmandu Tribhuvan

Tue 4/28

3:05 pm-2:55 pm

3 stops33h 35m

$1,084

BostonKathmandu

BOS - KTM

BOSKTM

Boston Logan Intl

Mon 1/5

3:40 pm-1:30 pm

3 stops35h 05m

Kathmandu Tribhuvan

Fri 1/30

2:45 pm-2:10 pm

2 stops34h 10m

$1,088

BostonKathmandu

BOS - KTM

BOSKTM

Boston Logan Intl

Sat 1/10

8:00 pm-12:15 pm

2 stops29h 30m

Kathmandu Tribhuvan

Fri 1/30

2:30 pm-2:10 pm

2 stops34h 25m

$1,101

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 Boston 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 August is another great option to travel to Kathmandu, with average flight prices from Boston averaging around $1,304.

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 Boston. The lowest ticket price found for a Tuesday departure recently was $1,421. Keep in mind that prices can always vary depending on your route and whether or not you are flying domestic or international. Flights from Boston to Kathmandu on a Sunday will generally be more expensive and average around $1,596. 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 evening is the cheapest time of day to fly from Boston to Kathmandu when you can find flight prices for as low as $1,454. Flying to Kathmandu in the evening is an ideal time because this is during off-peak travel hours. Flights in the afternoon are often more expensive with an average ticket price of $1,537.

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

You are more likely to see cheaper flights to Kathmandu from Boston when booking weeks ahead of your departure date. In general, you can expect to find flights to Kathmandu for around $1,457 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Kathmandu from Boston for as low as $1,161 on momondo.

How have Boston to Kathmandu flight prices changed over time?

As of November 2025, prices for Boston to Kathmandu flights are approximately 32% cheaper when compared to flights at the same time last year.

When to book flights from Boston to Kathmandu

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

Cheap Boston to Kathmandu (BOS to KTM) flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from Boston to Kathmandu

Fastest flight time

21h 50m

Direct flights

None
The fastest flight from Boston to Kathmandu takes 21h 50m
There are no direct flights from Boston to Kathmandu. There are no popular flight routes from Boston to Kathmandu.
Search flight deals

  • How far is Boston Logan Intl to Kathmandu Tribhuvan by plane?

    A flight from Boston Logan Intl to Kathmandu Tribhuvan will travel around 7361.3 mi. 21h 50m is a normal flight duration for this route.

  • When did momondo last update prices for flights from Boston Logan Intl Airport to Kathmandu Tribhuvan Airport?

    Prices for flights from Boston Logan Intl Airport to Kathmandu Tribhuvan Airport are refreshed on a daily basis.

  • How many operators does momondo search for flights from Boston Logan Intl Airport to Kathmandu Tribhuvan Airport?

  • How old do you have to be to fly from Boston Logan Intl Airport to Kathmandu Tribhuvan Airport?

    The minimum age for a child to fly alone is five, but airlines offering an unaccompanied minor (UNMR) service may have their age restrictions, such as regulations concerning flight duration, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from Boston Logan Intl Airport to Kathmandu Tribhuvan Airport.

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

    The necessary travel and health documents for your Kathmandu Tribhuvan Airport trip may vary depending on your travel plans and individual circumstances. Generally, you should have various documents, such as a national ID card or driver's license and a passport that is valid for six months beyond your scheduled arrival date. We recommend seeking advice from your airline or a trusted third party, such as IATA.

  • What is the most popular airline from Boston to Kathmandu?

Best airlines flying from Boston to Kathmandu

Compare and see reviews for airlines that fly from Boston to Kathmandu with momondo
Airline
Rating
Free Cancellation
Price
Cathay PacificPriceFrom $769Free CancellationRating
7.6
1,072 reviews
Search Cathay Pacific flights
EmiratesPriceFrom $1,050Free CancellationRating
8.1
3,422 reviews
Search Emirates flights
IndiGoPriceFrom $1,054Free CancellationRating
6.8
499 reviews
Search IndiGo flights
Qatar AirwaysPriceFrom $1,259Free CancellationRating
7.4
3,677 reviews
Search Qatar Airways flights
Turkish AirlinesPriceFrom $1,295Free CancellationRating
7.3
4,063 reviews
Search Turkish Airlines flights
Etihad AirwaysPriceFrom $1,437Free CancellationRating
7.4
1,312 reviews
Search Etihad Airways flights
SWISSPriceFrom $1,599Free CancellationRating
7.5
1,795 reviews
Search SWISS flights

Traveling to a place near Kathmandu?

Book flights to Kathmandu if you plan to visit one of these locations
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Why use momondo?

Why should I use momondo to find a flight deal from Boston to Kathmandu?

momondo collates all your flight options in one place and lets you filter them to find the perfect flight from Boston to Kathmandu. momondo saves you time and could save you money on your trip.

Can I find flights from Boston to Kathmandu with flexible booking policies on momondo?

momondo does allow users to show only those flights to Kathmandu from Boston which offer a flexible booking policy as well as other useful filters and features.

How can momondo help me find flights from Boston to Kathmandu?

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

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

Of course. momondo tracks the price of Boston to Kathmandu flights. All you need is a valid email address and we will do the rest; it is that quick and easy.

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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
Emirates
Cathay Pacific
IndiGo
Turkish Airlines
SWISS
Etihad Airways