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Cheap flights from Boston to Kathmandu from $351

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 1/25. 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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0 bags

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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 am
BOS
-
KTM
27h 05m2 stops
Multiple Airlines Logo
2:55 pm - 2:10 pm
KTM
-
BOS
34h 00m3 stops
$1,073Multiple Airlines
Sat, Jan 17 - Wed, Feb 18
IndiGo Logo
8:00 pm - 9:50 am
BOS
-
KTM
27h 05m2 stops
IndiGo Logo
5:10 pm - 6:05 pm
KTM
-
BOS
35h 40m2 stops
$1,075IndiGo
Sat, Jan 10 - Sat, Jan 31
Air India Logo
5:15 am - 12:15 am
BOS
-
KTM
32h 15m2 stops
Air India Logo
7:35 am - 2:24 pm
KTM
-
BOS
40h 34m2 stops
$1,076Air India
Thu, Jan 22 - Sun, Mar 22
Air India Logo
5:10 am - 12:15 am
BOS
-
KTM
32h 20m2 stops
Air India Logo
10:05 am - 2:14 pm
KTM
-
BOS
37h 54m2 stops
$1,077Air India
Fri, Jan 23 - Fri, Mar 20
Air India Logo
10:10 am - 12:15 am
BOS
-
KTM
51h 20m2 stops
Air India Logo
7:35 am - 2:24 pm
KTM
-
BOS
40h 34m2 stops
$1,079Air India
Sun, Mar 1 - Sat, Mar 21
Multiple Airlines Logo
3:40 pm - 9:05 am
BOS
-
KTM
30h 40m3 stops
Multiple Airlines Logo
1:25 pm - 3:05 pm
KTM
-
BOS
35h 25m2 stops
$1,080Multiple Airlines
Wed, Jan 21 - Sat, Apr 18
Air India Logo
5:15 am - 8:05 pm
BOS
-
KTM
28h 05m2 stops
Air India Logo
9:10 pm - 2:16 pm
KTM
-
BOS
26h 51m2 stops
$1,084Air India
Mon, Feb 23 - Thu, Apr 30
Multiple Airlines Logo
8:00 pm - 4:10 pm
BOS
-
KTM
33h 25m2 stops
Multiple Airlines Logo
1:25 pm - 3:15 pm
KTM
-
BOS
35h 35m2 stops
$1,085Multiple Airlines
Fri, Jan 16 - Fri, Apr 10
Air India Logo
10:10 am - 8:05 pm
BOS
-
KTM
47h 10m2 stops
Air India Logo
2:55 pm - 8:03 pm
KTM
-
BOS
38h 53m2 stops
$1,087Air India
Sun, Feb 15 - Tue, Mar 10
Multiple Airlines Logo
8:00 pm - 9:50 am
BOS
-
KTM
27h 05m2 stops
Multiple Airlines Logo
2:55 pm - 2:20 pm
KTM
-
BOS
34h 10m3 stops
$1,088Multiple Airlines
Fri, Jan 23 - Fri, Jan 30

Air India flights from Boston to Kathmandu

Our best Air India deals on Boston to Kathmandu flight tickets
Air India
Jan 22
BOS5:15 amBoston Logan Intl
32h 15m
2 stops
KTM12:15 amKathmandu Tribhuvan
Mar 22
KTM7:35 amKathmandu Tribhuvan
40h 34m
2 stops
BOS2:24 pmBoston Logan Intl
$1,076
Find similar
Air India
Jan 23
BOS5:10 amBoston Logan Intl
32h 20m
2 stops
KTM12:15 amKathmandu Tribhuvan
Mar 20
KTM10:05 amKathmandu Tribhuvan
37h 54m
2 stops
BOS2:14 pmBoston Logan Intl
$1,077
Find similar
Air India
Mar 1
BOS10:10 amBoston Logan Intl
51h 20m
2 stops
KTM12:15 amKathmandu Tribhuvan
Mar 21
KTM7:35 amKathmandu Tribhuvan
40h 34m
2 stops
BOS2:24 pmBoston Logan Intl
$1,079
Find similar

IndiGo flights from Boston to Kathmandu

Our best IndiGo deals on Boston to Kathmandu flight tickets
IndiGo
Jan 10
BOS8:00 pmBoston Logan Intl
27h 05m
2 stops
KTM9:50 amKathmandu Tribhuvan
Jan 31
KTM5:10 pmKathmandu Tribhuvan
35h 40m
2 stops
BOS6:05 pmBoston Logan Intl
$1,075
Find similar
IndiGo
Mar 4
BOS8:00 pmBoston Logan Intl
33h 25m
2 stops
KTM4:10 pmKathmandu Tribhuvan
Apr 26
KTM3:05 pmKathmandu Tribhuvan
38h 35m
2 stops
BOS7:55 pmBoston Logan Intl
$1,176
Find similar
IndiGo
Apr 12
BOS9:50 pmBoston Logan Intl
32h 05m
2 stops
KTM3:40 pmKathmandu Tribhuvan
Apr 20
KTM3:05 pmKathmandu Tribhuvan
38h 35m
2 stops
BOS7:55 pmBoston Logan Intl
$1,183
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 December 27, 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

Sat 1/17

8:00 pm-9:50 am

2 stops27h 05m

Kathmandu Tribhuvan

Wed 2/18

2:55 pm-2:10 pm

3 stops34h 00m

$1,073

BostonKathmandu

BOS - KTM

BOSKTM

Boston Logan Intl

Sat 1/10

8:00 pm-9:50 am

2 stops27h 05m

Kathmandu Tribhuvan

Sat 1/31

5:10 pm-6:05 pm

2 stops35h 40m

$1,075

BostonKathmandu

BOS - KTM

BOSKTM

Boston Logan Intl

Thu 1/22

5:15 am-12:15 am

2 stops32h 15m

Kathmandu Tribhuvan

Sun 3/22

7:35 am-2:24 pm

2 stops40h 34m

$1,076

BostonKathmandu

BOS - KTM

BOSKTM

Boston Logan Intl

Fri 1/23

5:10 am-12:15 am

2 stops32h 20m

Kathmandu Tribhuvan

Fri 3/20

10:05 am-2:14 pm

2 stops37h 54m

$1,077

BostonKathmandu

BOS - KTM

BOSKTM

Boston Logan Intl

Sun 3/1

10:10 am-12:15 am

2 stops51h 20m

Kathmandu Tribhuvan

Sat 3/21

7:35 am-2:24 pm

2 stops40h 34m

$1,079

BostonKathmandu

BOS - KTM

BOSKTM

Boston Logan Intl

Wed 1/21

3:40 pm-9:05 am

3 stops30h 40m

Kathmandu Tribhuvan

Sat 4/18

1:25 pm-3:05 pm

2 stops35h 25m

$1,080

BostonKathmandu

BOS - KTM

BOSKTM

Boston Logan Intl

Mon 2/23

5:15 am-8:05 pm

2 stops28h 05m

Kathmandu Tribhuvan

Thu 4/30

9:10 pm-2:16 pm

2 stops26h 51m

$1,084

BostonKathmandu

BOS - KTM

BOSKTM

Boston Logan Intl

Fri 1/16

8:00 pm-4:10 pm

2 stops33h 25m

Kathmandu Tribhuvan

Fri 4/10

1:25 pm-3:15 pm

2 stops35h 35m

$1,085

BostonKathmandu

BOS - KTM

BOSKTM

Boston Logan Intl

Sun 2/15

10:10 am-8:05 pm

2 stops47h 10m

Kathmandu Tribhuvan

Tue 3/10

2:55 pm-8:03 pm

2 stops38h 53m

$1,087

BostonKathmandu

BOS - KTM

BOSKTM

Boston Logan Intl

Fri 1/23

8:00 pm-9:50 am

2 stops27h 05m

Kathmandu Tribhuvan

Fri 1/30

2:55 pm-2:20 pm

3 stops34h 10m

$1,088

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 September is another great option to travel to Kathmandu, with average flight prices from Boston averaging around $1,320.

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 $1,468 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 December 2025, prices for Boston to Kathmandu flights are approximately 45% 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

24h 55m

Direct flights

None
The fastest flight from Boston to Kathmandu takes 24h 55m
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. 24h 55m 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 $775Free CancellationRating
7.6
1,106 reviews
Search Cathay Pacific flights
Air IndiaPriceFrom $1,017Free CancellationRating
5.5
2,958 reviews
Search Air India flights
EmiratesPriceFrom $1,050Free CancellationRating
8.1
3,443 reviews
Search Emirates flights
IndiGoPriceFrom $1,053Free CancellationRating
6.8
512 reviews
Search IndiGo flights
Qatar AirwaysPriceFrom $1,261Free CancellationRating
7.4
3,697 reviews
Search Qatar Airways flights
Turkish AirlinesPriceFrom $1,279Free CancellationRating
7.3
4,125 reviews
Search Turkish Airlines flights
SWISSPriceFrom $1,599Free CancellationRating
7.5
1,829 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
IndiGo
Cathay Pacific
Turkish Airlines
SWISS
Air India