$670 Cheap Flights from Boise (BOI) to Kathmandu (KTM)

View $670 flight on Mon, Jan 5, 2026Opens in a new window

Popular airlines from Boise Airport (BOI) to Tribhuvan Intl. Airport (KTM)

Cheap Flights from Boise to Kathmandu (BOI-KTM)

Prices were available within the past 7 days and start at $670 for one-way flights and $1,072 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Alaska Airlines
Thu, Nov 13 - Wed, Dec 17
BOI
Boise
KTM
Kathmandu
$1,072 Roundtrip, found 2 days ago
$1,072
Roundtrip
found 2 days ago
Select Alaska Airlines flight, departing Thu, Nov 13 from Boise to Kathmandu, returning Wed, Dec 17, priced at $1,072 found 2 days ago
Alaska Airlines
Thu, Nov 13 - Wed, Dec 17
BOI
Boise
KTM
Kathmandu
$1,074 Roundtrip, found 2 days ago
$1,074
Roundtrip
found 2 days ago
Select Alaska Airlines flight, departing Thu, Nov 13 from Boise to Kathmandu, returning Wed, Dec 17, priced at $1,074 found 2 days ago
Alaska Airlines
Mon, Oct 6 - Mon, Oct 20
BOI
Boise
KTM
Kathmandu
$1,084 Roundtrip, found 2 days ago
$1,084
Roundtrip
found 2 days ago
Select Alaska Airlines flight, departing Mon, Oct 6 from Boise to Kathmandu, returning Mon, Oct 20, priced at $1,084 found 2 days ago
Alaska Airlines
Mon, Oct 6 - Mon, Oct 20
BOI
Boise
KTM
Kathmandu
$1,086 Roundtrip, found 2 days ago
$1,086
Roundtrip
found 2 days ago
Select Alaska Airlines flight, departing Mon, Oct 6 from Boise to Kathmandu, returning Mon, Oct 20, priced at $1,086 found 2 days ago
Alaska Airlines
Sat, Feb 28 - Mon, Mar 16
BOI
Boise
KTM
Kathmandu
$1,112 Roundtrip, found 3 days ago
$1,112
Roundtrip
found 3 days ago
Select Alaska Airlines flight, departing Sat, Feb 28 from Boise to Kathmandu, returning Mon, Mar 16, priced at $1,112 found 3 days ago
Alaska Airlines
Sat, Feb 28 - Mon, Mar 16
BOI
Boise
KTM
Kathmandu
$1,115 Roundtrip, found 3 days ago
$1,115
Roundtrip
found 3 days ago
Select Alaska Airlines flight, departing Sat, Feb 28 from Boise to Kathmandu, returning Mon, Mar 16, priced at $1,115 found 3 days ago
Qatar Airways
Sat, Feb 28 - Mon, Mar 16
BOI
Boise
KTM
Kathmandu
$1,123 Roundtrip, found 3 days ago
$1,123
Roundtrip
found 3 days ago
Select Qatar Airways flight, departing Sat, Feb 28 from Boise to Kathmandu, returning Mon, Mar 16, priced at $1,123 found 3 days ago
Singapore Airlines
Tue, Nov 25 - Wed, Dec 24
BOI
Boise
KTM
Kathmandu
$2,035 Roundtrip, found 3 days ago
$2,035
Roundtrip
found 3 days ago
Select Singapore Airlines flight, departing Tue, Nov 25 from Boise to Kathmandu, returning Wed, Dec 24, priced at $2,035 found 3 days ago
Korean Air
Thu, Apr 9 - Sat, Apr 25
BOI
Boise
KTM
Kathmandu
$2,133 Roundtrip, found 6 days ago
$2,133
Roundtrip
found 6 days ago
Select Korean Air flight, departing Thu, Apr 9 from Boise to Kathmandu, returning Sat, Apr 25, priced at $2,133 found 6 days ago
Emirates
Tue, Sep 16 - Tue, Oct 14
BOI
Boise
KTM
Kathmandu
$4,727 Roundtrip, found 3 hours ago
$4,727
Roundtrip
found 3 hours ago
Select Emirates flight, departing Tue, Sep 16 from Boise to Kathmandu, returning Tue, Oct 14, priced at $4,727 found 3 hours ago

Alternative airports near Kathmandu

Prices were available within the past 7 days. Prices and availability are subject to change.

Select flight to Tribhuvan Intl. KTM. Cheapest and Closest option available. Average driving time to city center is 6 minutes. Flights from $2,247
KTM
Tribhuvan Intl.
CheapestClosest
Average driving time to city center6 min
Flights from $2,247
Flights from Boise (BOI) to Kathmandu (KTM)
Origin airport
Boise
Destination airport
Tribhuvan Intl.
Airlines serving
Emirates, Qatar Airways, Singapore Airlines
Roundtrip price
$1,071
Distance
7325 mi

Boise to Kathmandu Flights

The cheapest times to fly from Boise to Kathmandu

On average, Thursday can be the cheapest time to fly, according to data from the Airlines Reporting Corporation (ARC), one of the world's biggest databases for global airline sales. The data reveals that you could save up to 16% by flying on a Thursday—the cheapest day to travel on average—instead of a Sunday—the most expensive. Some of the most affordable flights from Boise to Kathmandu are during the month of November. You can find some of the cheapest flights from Boise to Kathmandu with Expedia's search tool and vast selection of airlines.

 

The best time to book a flight from Boise to Kathmandu

Sunday is one of the best days to book for cheap flights from Boise to Kathmandu: Tickets reserved on a Sunday cost between 6% and 13% less than those reserved on a Friday, according to ARC data. The data also suggests booking early can also lead to cheaper airfares. You could save 24% by buying your tickets for domestic flights at least a month in advance and 10% by booking international flights 2 months in advance.

 

How to find cheap round-trip tickets from Boise to Kathmandu

Being flexible with your dates and using Expedia's Price Drop Protection and Price Tracking features are some of the best ways of finding a cheap ticket from Boise to Kathmandu in 2025. You can also book with separate airlines for your outbound and return journeys, from $670 one-way. Expedia also offers Price Drop Protection, so if the cost of your airfare goes down after booking, you'll receive a credit for the difference*. This is available for a small fee, and is free to One Key Gold and Platinum tier members.

 

Expedia's Price Tracking feature means you can stay on top of airfares without manually checking every day. It sends you automated price alerts for cheap Boise to Kathmandu flights and uses historical data to indicate when the best time to book is. Download Expedia's free app to activate this handy tool in a few easy taps.

 

You could also save big by booking one of Expedia's vacation packages. Bundling together your Boise to Kathmandu airfare with your accommodations and car rental is often cheaper than booking everything separately. There’s also One Key, Expedia's generous rewards program. Join for free and you could earn One Key cash on most bookings to save on future adventures.

 

*Terms apply.

 

Disclaimer: ARC The statistics are based on average round-trip ticket prices between January and August 2023. The percentages you see are averages.

 

Frequently asked questions

How much does a flight from Boise Airport (BOI) to Tribhuvan Intl. Airport (KTM) cost?
Get a cheap one-way flight from $670 or cheap return flight from $1,072 from Boise Airport (BOI) to Tribhuvan Intl. Airport (KTM) with Expedia. Enter your travel dates and sort by "Price (lowest to highest)" to find our cheapest flight offers on this route.
What is the cheapest month to fly from Boise Airport (BOI) to Tribhuvan Intl. Airport (KTM)?
The cheapest month to fly from BOI to KTM is November, when there's less demand. Off-peak season is usually when you'll find cheap fares for travel between these airports.
What is the cheapest airline that flies from Boise Airport (BOI) to Tribhuvan Intl. Airport (KTM)?
Expedia's filter tool lets you easily compare airlines, flight times and baggage options all in one place. Tailor the search to your trip, then sort by "Price (lowest to highest)" to find the carrier with the cheapest BOI to KTM flight.
How many flights per day from Boise Airport (BOI) to Tribhuvan Intl. Airport (KTM)?
You'll need to hop on a flight with a layover if you're traveling from Boise Airport (BOI) to Tribhuvan Intl. Airport (KTM). There are no daily direct flights on this route. However, just filter your search to include one or more stops to find the best option for your trip.
What day of the week has the most flights from BOI to KTM?
Generally you'll find the most flight options available on a Friday. Tuesdays tend to be the quietest.* However, this can vary based on the airline, time of year and other factors.*Busiest/quietest day to travel is based on Expedia flight demand through January to December 2024.
What is the best time to fly from Boise Airport (BOI) to Tribhuvan Intl. Airport (KTM)?
Choose a flight from Boise Airport (BOI) to Tribhuvan Intl. Airport (KTM) that leaves before 3 PM to reduce the risk of cancellations. Departures after this hour have a 22% higher chance of being canceled, on average.**Most reliable time of the day and month to travel recommendation is based on January through August 2024 flight status data sourced from OAG's global flight data platform.
Is it cheaper to buy a plane ticket from Boise Airport (BOI) to Tribhuvan Intl. Airport (KTM) last-minute?
Waiting until right before your break to book your flight from BOI to KTM often results in higher prices. Although you may find some last-minute deals, there's no guarantee. Be flexible with your travel plans to boost your chances of scoring a bargain.
Is it cheaper to book a BOI to KTM flight and hotel package?
Compared with arranging flights and hotels separately, booking a BOI to KTM flight and hotel package with Expedia could result in significant savings. Better still, having everything in one convenient place takes the hassle out of travel planning. Just secure your flights and choose from our extensive range of hotels, then customize your trip with extras like car rentals and activities.
Can I cancel or change the date of my flight from Boise Airport (BOI) to Tribhuvan Intl. Airport (KTM)?
If you booked your BOI to KTM flight within the last 24 hours, you may be able to modify or cancel it without fees. Depending on the airline and the fare type you purchased, additional charges may apply for changes beyond this timeframe. Airline policies and contact information can be found in your itinerary or confirmation email. Or, go to our Customer Service portal for more details.

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*Available to One Key members.