HomeSearch by dateVacation packagesHotelsFlight dealsCar rentalTravel tips & news
Kathmandu

$555+ Cheap flights from Portland (PDX) to Kathmandu (KTM)

This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 3/4. Fares are subject to change and may not be available on all flights or dates of travel.
PDX — KTM
Dec 3 — Dec 101
Wed 12/3
Wed 12/10
1 adult, Economy
We work with more than 300 partners to bring you better travel deals

Find cheap flights from Portland to Kathmandu with Cheapflights

1. Tell us where you want to go

Enter your travel information like dates, passengers, trip type (one-way or round trip), and preferred cabin class then click “Find deals”

2. Select your favorite providers

We find the providers serving your travel needs. Choose up to four travel providers to compare side-by-side for flights, hotels, or car rentals.

3. Compare prices and book

Review each provider’s pricing and select the best option for you! Book through your favorite provider’s website for a seamless experience.

Cheapflights Tip: The best prices from Portland to Kathmandu Tribhuvan are usually found in January or May, booked 81 days in advance, depart on a Tuesday or Wednesday and return on a Monday

Cheap flight deals from Portland to Kathmandu

Discover tips and strategies to find the most affordable flight options for your journey from Portland (PDX) to Kathmandu (KTM). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated November 3, 2025.

Most accurate provider

Justfly.com
3 stars

Most trusted provider

Justfly.com
3 stars

Round-trip from

$1,054
(oojo)

One-way from

$555
(Kiwi.com)

Popular in

June

Cheapest in

January

Average price

$1,555
Provider with most accurate pricing for Portland-Kathmandu Tribhuvan flight deals.
Search Deals
Provider most trusted by Cheapflights users for Portland-Kathmandu Tribhuvan flights.
Search Deals
From Portland to Kathmandu Tribhuvan
Search Deals
One-way flight from Portland to Kathmandu Tribhuvan
Search Deals
Highest demand for flights based on searches. 5% potential increase in price ($89 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 2% potential price decrease ($33 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in November 2025
Search Deals

Find flight deals from Portland to Kathmandu

Cheapest flights from Portland to Kathmandu
Explore the most affordable flight options available from Portland to Kathmandu. Find the lowest fares from popular airlines and budget airlines, with prices last updated on November 3, 2025.

This Expedia deal was found by Cheapflights users on 11/3. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 11/244:30 pmPDX - KTM
2 stops39h 15mMultiple Airlines
Tue 12/910:55 pmKTM - PDX
2 stops55h 20mMultiple Airlines
Deal found 11/3$1,195
This oojo deal was found by Cheapflights users on 11/3. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 11/132:50 pmPDX - KTM
2 stops54h 35mMultiple Airlines
Sat 12/1312:35 pmKTM - PDX
2 stops45h 31mMultiple Airlines
Deal found 11/3$1,197
This FlightHub deal was found by Cheapflights users on 11/3. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/21:34 pmPDX - KTM
2 stops30h 26mQatar Airways
Fri 12/197:05 pmKTM - PDX
2 stops42h 52mQatar Airways
Deal found 11/3$1,467
This oojo deal was found by Cheapflights users on 11/3. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/210:30 amPDX - KTM
2 stops34h 55mMultiple Airlines
Tue 1/612:35 pmKTM - PDX
2 stops58h 46mMultiple Airlines
Deal found 11/3$1,749
This oojo deal was found by Cheapflights users on 11/2. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/39:30 pmPDX - KTM
2 stops47h 55mMultiple Airlines
Tue 1/612:35 pmKTM - PDX
2 stops45h 44mMultiple Airlines
Deal found 11/2$1,834

Cheapflights Fare Finder

 
Customize your flight search to find flights from Portland 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, Cheapflights users made 2,558,603 searches. Data last updated November 3, 2025.
Use the filters below to find and compare flights from Portland to Kathmandu that are best for you.

Fly from

Portland

Fly to

Kathmandu

Route

Depart

Return

Price

PortlandKathmandu

PDX - KTM

PDXKTM

Portland

Sun 3/1

10:35 am-9:50 pm

2 stops45h 30m

Kathmandu Tribhuvan

Sun 3/15

11:00 pm-1:19 pm

2 stops27h 04m

$1,138

PortlandKathmandu

PDX - KTM

PDXKTM

Portland

Wed 3/4

2:50 pm-9:30 pm

2 stops40h 55m

Kathmandu Tribhuvan

Wed 3/25

10:55 pm-11:24 pm

2 stops37h 14m

$1,172

PortlandKathmandu

PDX - KTM

PDXKTM

Portland

Wed 3/18

3:50 pm-9:30 pm

2 stops40h 55m

Kathmandu Tribhuvan

Wed 4/8

11:00 pm-8:25 pm

2 stops34h 10m

$1,188

PortlandKathmandu

PDX - KTM

PDXKTM

Portland

Thu 11/13

2:50 pm-11:10 am

2 stops54h 35m

Kathmandu Tribhuvan

Sat 12/13

12:35 pm-8:21 pm

2 stops45h 31m

$1,197

PortlandKathmandu

PDX - KTM

PDXKTM

Portland

Sun 1/4

5:48 pm-9:30 pm

2 stops61h 57m

Kathmandu Tribhuvan

Sun 2/8

10:55 pm-2:48 pm

2 stops53h 38m

$1,206

PortlandKathmandu

PDX - KTM

PDXKTM

Portland

Mon 3/16

7:30 am-9:30 pm

2 stops49h 15m

Kathmandu Tribhuvan

Wed 4/8

11:00 pm-11:24 pm

2 stops37h 09m

$1,229

PortlandKathmandu

PDX - KTM

PDXKTM

Portland

Tue 3/17

7:00 am-9:30 pm

2 stops49h 45m

Kathmandu Tribhuvan

Tue 4/7

11:00 pm-4:28 pm

2 stops54h 13m

$1,237

PortlandKathmandu

PDX - KTM

PDXKTM

Portland

Sat 1/24

6:22 pm-9:30 pm

2 stops37h 23m

Kathmandu Tribhuvan

Wed 3/25

10:55 pm-11:24 pm

2 stops37h 14m

$1,252

PortlandKathmandu

PDX - KTM

PDXKTM

Portland

Tue 3/17

5:30 pm-9:30 pm

2 stops39h 15m

Kathmandu Tribhuvan

Fri 4/10

11:00 pm-4:30 pm

2 stops30h 15m

$1,269

PortlandKathmandu

PDX - KTM

PDXKTM

Portland

Sat 5/2

5:30 pm-9:45 pm

2 stops39h 30m

Kathmandu Tribhuvan

Wed 5/6

11:00 pm-8:25 pm

2 stops34h 10m

$1,279

Flights are sorted by cheapest round-trip flights first.

Deals found on 11/3

Showing 1-10 of 11 results
1
2

Compare providers for flights from Portland to Kathmandu

Provider information is updated monthly. Please note that these providers often have deals for this flight, but the availability may vary on a day-by-day basis on Cheapflights.
Use the table below to compare price accuracy, trust ratings, and cancellation policies for each provider offering flight deals from Portland to Kathmandu in November.
ProviderPrice AccuracyTrust Score*
FlightHubPrice Accuracy3 starsTrust Score*1 star
ExpediaPrice Accuracy2 starsTrust Score*3 stars
eDreamsPrice Accuracy3 starsTrust Score*3 stars
oojoPrice Accuracy3 starsTrust Score*3 stars
AranGrantPrice Accuracy2 starsTrust Score*3 stars
Justfly.comPrice Accuracy3 starsTrust Score*3 stars
CheapfaremartPrice Accuracy-Trust Score*1 star

*The Trust Score is based on feedback from users after their booking experience. It measures overall satisfaction, helping us identify issues like hidden fees, problems during the ticketing process, and the quality of customer service. This score is our best indicator of the provider's quality and reliability.

  • Most accurate provider: When it comes to deals on Portland-Kathmandu flights, users find the pricing of Justfly.com to be most consistent on Cheapflights vs. Justfly.com Users can find the same prices on Portland-Kathmandu flight deals on Cheapflights vs. Justfly.com >95% of the time. Price accuracy is based on data collected from Portland-Kathmandu flight searches over the past month and is updated monthly.
  • Most trusted provider: When it comes to deals on Portland-Kathmandu flights, Cheapflights users trust Justfly.com the most. Justfly.com has received a user feedback score of 3 out of 3 stars (3 being the best), meaning they have been trusted the most by Cheapflights users looking for Portland-Kathmandu flight deals. Provider user feedback score is based on Cheapflights searches over the past month and is updated monthly.

Best time to book a flight from Portland to Kathmandu

Have a flexible travel schedule? Discover the best time to fly to Kathmandu from Portland with our price prediction graph.
Estimated round-trip price
Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.

Cheapflights Insights

Everything you need to know about your flight from Portland to Kathmandu

How far ahead should I book a flight from Portland to Kathmandu?

Use this chart to determine the optimal time to book a round-trip flight from Portland to Kathmandu. Price data was last updated on October 31, 2025.

The price you pay for your flight from Portland to Kathmandu may vary depending on when you book. For the best chance of a lower fare, look to book 81 days in advance of your trip. Fares are likely to increase a fortnight or so before your departure date.

What is the cheapest month to book a flight from Portland to Kathmandu?

Currently, February is the cheapest month in which you can book a flight from Portland to Kathmandu (average of $958). Flying from Portland to Kathmandu in July is currently the most expensive (average of $1,425). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

What is the cheapest time of day to fly from PDX to KTM?

Find hourly flight availability from Portland to Kathmandu. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated November 3, 2025.

Unlike in the morning, when flights are generally more expensive, you can save up to 37% on flights from Portland to Kathmandu by exploring options for tickets at noon.

Reviews of airlines servicing Kathmandu

Get insights into the airlines that provide service to Kathmandu. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to Kathmandu. Reviews last updated November 3, 2025.
Read through reviews of airlines operating flights from Portland to Kathmandu, such as Singapore Airlines, Cathay Pacific, and Qatar Airways. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.
Singapore Airlines
8.1
Very good
1,391 reviews

Crew

8.6

Comfort

8.0

Overall

8.1

Entertainment

8.0

Food

7.7

Boarding

8.3

Reviews

1 / 20
2.0
Mediocre

Ketan,Nov 2024

SIN - AMD

Food was not good. It was like few days old.
Singapore Airlines
8.1
Very good
1,391 reviews
Singapore Airlines
8.1
Very good
1,391 reviews

Crew

8.6

Comfort

8.0

Overall

8.1

Entertainment

8.0

Food

7.7

Boarding

8.3

Reviews

1 / 20
2.0
Mediocre

Ketan,Nov 2024

SIN - AMD

Food was not good. It was like few days old.
Cathay Pacific
7.6
Good
1,050 reviews
Singapore Airlines
8.1
Very good
1,391 reviews

Crew

8.6

Comfort

8.0

Overall

8.1

Entertainment

8.0

Food

7.7

Boarding

8.3

Reviews

1 / 20
2.0
Mediocre

Ketan,Nov 2024

SIN - AMD

Food was not good. It was like few days old.
Qatar Airways
7.4
Good
3,660 reviews
Singapore Airlines
8.1
Very good
1,391 reviews

Crew

8.6

Comfort

8.0

Overall

8.1

Entertainment

8.0

Food

7.7

Boarding

8.3

Reviews

1 / 20
2.0
Mediocre

Ketan,Nov 2024

SIN - AMD

Food was not good. It was like few days old.

Related info for your journey

Find useful and relevant information for your journey from Portland to Kathmandu. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • How long is the flight from Portland to Kathmandu?

    Cathay Pacific can get you from Portland to Kathmandu in just under 61h 57m. Your travel time can differ by up to . The distance from Portland to Kathmandu is about 7073 mi.

  • What are the cheapest airlines flying from Portland to Kathmandu round-trip?

    Flying on Singapore Airlines is currently your cheapest option to Kathmandu, with prices starting at $1,059. Additional round-trip tickets that might be worth considering are offered by Qatar Airways and Cathay Pacific, with the lowest prices starting at $1,100 and $1,128, respectively. You may be able to fly from Portland to Kathmandu for 26% less than the average price by searching for these airlines.

  • Where are the most common layover locations when flying from Portland to Kathmandu?

    Flights departing from Portland and landing in Kathmandu layover in Doha most frequently.

  • Where are the least popular layover locations for Portland to Kathmandu flights?

    The least popular layover on flights from Portland to Kathmandu is Doha.

  • Can I find deals for flights from Portland to Kathmandu that include hotel bookings?

    Yes. In addition to deals on Portland to Kathmandu flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from Portland to Kathmandu?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Portland to Kathmandu.

  • Can I find deals for business class flights from Portland to Kathmandu?

    Yes. Cheapflights offers flight deals from Portland to Kathmandu by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

  • What is the cheapest month to book a flight from Portland to Kathmandu?

    Currently, February is the cheapest month in which you can book a flight from Portland to Kathmandu (average of $958). Flying from Portland to Kathmandu in July is currently the most expensive (average of $1,425). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

See more FAQs

Traveling to a place near Kathmandu?

Book flights to Kathmandu if you plan to visit one of these locations
Nagarkot

Browse thousands of different options on Cheapflights for your next trip

Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.

Alternative routes for Portland to Kathmandu

See prices for flight routes from nearby airports that may be better suited for you.
Redmond to Kathmandu flights
Boise to Kathmandu flights
Medford to Kathmandu flights

Top 3 airlines flying from Portland to Kathmandu

Discover the top 3 airlines that operate flights from Portland to Kathmandu. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated November 3, 2025.
AirlineCheapestAverageFlexibilityOn-time
Singapore AirlinesCheapest$1,059Average$1,296FlexibilityNo cancel feeOn-time81%
Qatar AirwaysCheapest$1,100Average$1,478FlexibilityNo cancel feeOn-time68%
Cathay PacificCheapest$1,128Average$1,218FlexibilityNo cancel feeOn-time72%

100% Free

Cheapflights is completely free to use, so you can start saving the moment you arrive.

Book with Flexibility

Our users can plan ahead with confidence and find flights with no change fees

Travel Smart

Millions of people come to us for their flight needs every year. We help make travel planning easy by providing useful insights and data-driven graphs that can inform your decisions.