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Cheap flights from Boston to Kathmandu from $405

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 8/30. 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 (BOS-KTM)

Cheap round-trip flights

Air India Logo
12:20 pm - 11:00 pmBOS-KTM
48h 55m2 stops
Air India Logo
2:00 pm - 9:00 pmKTM-BOS
40h 45m2 stops
$1,055Air India
Find Deal
Fri, Sep 5 - Wed, Oct 15
Air India Logo
2:45 pm - 8:05 pmBOS-KTM
43h 35m2 stops
Air India Logo
2:00 pm - 7:35 pmKTM-BOS
39h 20m2 stops
$1,057Air India
Find Deal
Fri, Sep 5 - Sun, Oct 5
Logo
1:40 am - 1:00 pmBOS-KTM
49h 35m2 stops
Logo
4:40 pm - 11:00 pmKTM-BOS
40h 05m2 stops
$1,060
Find Deal
Sun, Oct 5 - Sat, Oct 18
Logo
1:40 am - 6:10 pmBOS-KTM
54h 45m2 stops
Logo
1:25 pm - 11:00 pmKTM-BOS
43h 20m2 stops
$1,073
Find Deal
Sun, Aug 31 - Sun, Sep 21
Logo
4:30 pm - 6:10 pmBOS-KTM
39h 55m2 stops
Logo
1:45 pm - 2:40 pmKTM-BOS
35h 40m2 stops
$1,076
Find Deal
Wed, Oct 1 - Fri, Nov 7
Cathay Pacific Logo
1:40 am - 9:45 pmBOS-KTM
34h 20m1 stop
Cathay Pacific Logo
11:00 pm - 11:00 pmKTM-BOS
33h 45m1 stop
$1,086Cathay Pacific
Find Deal
Sun, Oct 5 - Sat, Oct 18
Cathay Pacific Logo
12:30 am - 10:00 pmBOS-KTM
34h 45m1 stop
Cathay Pacific Logo
11:15 pm - 10:00 pmKTM-BOS
33h 30m1 stop
$1,191Cathay Pacific
Find Deal
Wed, Dec 24 - Tue, Dec 30
Emirates Logo
10:10 pm - 10:40 pmBOS-KTM
37h 45m1 stop
Emirates Logo
11:45 pm - 1:55 pmKTM-BOS
24h 55m1 stop
$1,208Emirates
Find Deal
Wed, Nov 5 - Wed, Dec 10
Singapore Airlines Logo
10:30 am - 9:50 pmBOS-KTM
48h 35m3 stops
Singapore Airlines Logo
11:00 pm - 11:22 pmKTM-BOS
35h 07m2 stops
$1,212Singapore Airlines
Find Deal
Tue, Feb 3 - Tue, Mar 3
Emirates Logo
10:10 pm - 8:20 amBOS-KTM
23h 25m1 stop
Emirates Logo
7:15 pm - 1:55 pmKTM-BOS
29h 25m1 stop
$1,222Emirates
Find Deal
Mon, Jan 26 - Fri, Feb 27

Air India flights from Boston to Kathmandu

Our best Air India deals on Boston to Kathmandu flight tickets
Air India
Sep 5
BOS12:20 pmBoston Logan Intl
48h 55m
2 stops
KTM11:00 pmKathmandu Tribhuvan
Oct 15
KTM2:00 pmKathmandu Tribhuvan
40h 45m
2 stops
BOS9:00 pmBoston Logan Intl
$1,055
Find similar
Air India
Sep 5
BOS2:45 pmBoston Logan Intl
43h 35m
2 stops
KTM8:05 pmKathmandu Tribhuvan
Oct 5
KTM2:00 pmKathmandu Tribhuvan
39h 20m
2 stops
BOS7:35 pmBoston Logan Intl
$1,057
Find similar
Air India
Sep 1
BOS5:15 amBoston Logan Intl
32h 00m
2 stops
KTM11:00 pmKathmandu Tribhuvan
Sep 19
KTM9:00 pmKathmandu Tribhuvan
29h 34m
2 stops
BOS4:49 pmBoston Logan Intl
$1,101
Find similar

Cathay Pacific flights from Boston to Kathmandu

Our best Cathay Pacific deals on Boston to Kathmandu flight tickets
Cathay Pacific
Aug 19
BOS1:40 amBoston Logan Intl
34h 20m
1 stop
KTM9:45 pmKathmandu Tribhuvan
Oct 7
KTM11:00 pmKathmandu Tribhuvan
33h 45m
1 stop
BOS11:00 pmBoston Logan Intl
$1,078
Find similar
Cathay Pacific
Oct 5
BOS1:40 amBoston Logan Intl
34h 20m
1 stop
KTM9:45 pmKathmandu Tribhuvan
Oct 18
KTM11:00 pmKathmandu Tribhuvan
33h 45m
1 stop
BOS11:00 pmBoston Logan Intl
$1,086
Find similar
Cathay Pacific
Dec 24
BOS12:30 amBoston Logan Intl
34h 45m
1 stop
KTM10:00 pmKathmandu Tribhuvan
Dec 30
KTM11:15 pmKathmandu Tribhuvan
33h 30m
1 stop
BOS10:00 pmBoston Logan Intl
$1,191
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 August 18, 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

Fri 9/5

12:20 pm-11:00 pm

2 stops48h 55m

Kathmandu Tribhuvan

Wed 10/15

2:00 pm-9:00 pm

2 stops40h 45m

$1,055

BostonKathmandu

BOS - KTM

BOSKTM

Boston Logan Intl

Fri 9/5

2:45 pm-8:05 pm

2 stops43h 35m

Kathmandu Tribhuvan

Sun 10/5

2:00 pm-7:35 pm

2 stops39h 20m

$1,057

BostonKathmandu

BOS - KTM

BOSKTM

Boston Logan Intl

Sun 10/5

1:40 am-1:00 pm

2 stops49h 35m

Kathmandu Tribhuvan

Sat 10/18

4:40 pm-11:00 pm

2 stops40h 05m

$1,060

BostonKathmandu

BOS - KTM

BOSKTM

Boston Logan Intl

Sun 8/31

1:40 am-6:10 pm

2 stops54h 45m

Kathmandu Tribhuvan

Sun 9/21

1:25 pm-11:00 pm

2 stops43h 20m

$1,073

BostonKathmandu

BOS - KTM

BOSKTM

Boston Logan Intl

Wed 10/1

4:30 pm-6:10 pm

2 stops39h 55m

Kathmandu Tribhuvan

Fri 11/7

1:45 pm-2:40 pm

2 stops35h 40m

$1,076

BostonKathmandu

BOS - KTM

BOSKTM

Boston Logan Intl

Sun 10/5

1:40 am-9:45 pm

1 stop34h 20m

Kathmandu Tribhuvan

Sat 10/18

11:00 pm-11:00 pm

1 stop33h 45m

$1,086

BostonKathmandu

BOS - KTM

BOSKTM

Boston Logan Intl

Wed 12/24

12:30 am-10:00 pm

1 stop34h 45m

Kathmandu Tribhuvan

Tue 12/30

11:15 pm-10:00 pm

1 stop33h 30m

$1,191

BostonKathmandu

BOS - KTM

BOSKTM

Boston Logan Intl

Wed 11/5

10:10 pm-10:40 pm

1 stop37h 45m

Kathmandu Tribhuvan

Wed 12/10

11:45 pm-1:55 pm

1 stop24h 55m

$1,208

BostonKathmandu

BOS - KTM

BOSKTM

Boston Logan Intl

Tue 2/3

10:30 am-9:50 pm

3 stops48h 35m

Kathmandu Tribhuvan

Tue 3/3

11:00 pm-11:22 pm

2 stops35h 07m

$1,212

BostonKathmandu

BOS - KTM

BOSKTM

Boston Logan Intl

Mon 1/26

10:10 pm-8:20 am

1 stop23h 25m

Kathmandu Tribhuvan

Fri 2/27

7:15 pm-1:55 pm

1 stop29h 25m

$1,222

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 $1,295.

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 $1,484 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 $1,244 on momondo.

How have Boston to Kathmandu flight prices changed over time?

As of August 2025, prices for Boston to Kathmandu flights are approximately 15% 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

Best Price Found

$405

Fastest flight time

20h 35m

Direct flights

None

Airports in Kathmandu

1 airport
The best one-way flight to Kathmandu from Boston in the past 72 hours is $405. The best round-trip flight deal from Boston to Kathmandu found on momondo in the last 72 hours is $1,055.
The fastest flight from Boston to Kathmandu takes 20h 35m
There are no direct flights from Boston to Kathmandu. Popular non-direct route for this connection is Boston Logan Intl Airport - Kathmandu Tribhuvan Airport.
There is 1 airport near Kathmandu: Kathmandu Tribhuvan (KTM)
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  • 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. 20h 35m 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
969 reviews
Search Cathay Pacific flights
EmiratesPriceFrom $1,050Free CancellationRating
8.1
3,315 reviews
Search Emirates flights
IndiGoPriceFrom $1,183Free CancellationRating
6.8
479 reviews
Search IndiGo flights
Qatar AirwaysPriceFrom $1,236Free CancellationRating
7.4
3,609 reviews
Search Qatar Airways flights
Turkish AirlinesPriceFrom $1,310Free CancellationRating
7.3
3,945 reviews
Search Turkish Airlines flights
Etihad AirwaysPriceFrom $1,437Free CancellationRating
7.4
1,233 reviews
Search Etihad Airways flights
SWISSPriceFrom $1,599Free CancellationRating
7.6
1,699 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 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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