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Kathmandu

$547+ 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
Jan 27 — Feb 31
Tue 1/27
Tue 2/3
1 adult, Economy
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Cheap 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 December 28, 2025.

This oojo deal was found by Cheapflights users on 12/26. 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.
Sat 12/271:51 pmPDX - KTM
2 stops28h 19mQatar Airways
Mon 1/57:05 pmKTM - PDX
2 stops37h 31mQatar Airways
Deal found 12/26$2,523
This Expedia deal was found by Cheapflights users on 12/26. 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.
Sat 12/277:00 amPDX - KTM
3 stops33h 50mMultiple Airlines
Mon 1/510:55 pmKTM - PDX
2 stops52h 20mMultiple Airlines
Deal found 12/26$3,892

Find 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 December 28, 2025.

Most accurate provider

Justfly.com
3 stars

Most trusted provider

Justfly.com
3 stars

Round-trip from

$1,085
(Expedia)

One-way from

$547
(oojo)

Popular in

June

Cheapest in

January

Average price

$1,557
Provider with most accurate pricing for Portland-Kathmandu Tribhuvan flight deals.
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Provider most trusted by Cheapflights users for Portland-Kathmandu Tribhuvan flights.
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From Portland to Kathmandu Tribhuvan
Search Deals
One-way flight from Portland to Kathmandu Tribhuvan
Search Deals
Highest demand for flights based on searches. 13% potential increase in price ($226 potential increase over avg. RT price).
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Cheapest flight prices on average. 4% potential price decrease ($63 potential savings vs. average RT price).
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Average for round-trip flights in December 2025
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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 December 28, 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 1/18

9:30 pm-9:30 pm

2 stops58h 15m

Kathmandu Tribhuvan

Tue 2/17

10:55 pm-4:41 pm

2 stops31h 31m

$1,085

PortlandKathmandu

PDX - KTM

PDXKTM

Portland

Mon 4/6

1:35 pm-4:45 pm

2 stops38h 25m

Kathmandu Tribhuvan

Thu 4/23

6:00 pm-10:31 pm

2 stops41h 16m

$1,119

PortlandKathmandu

PDX - KTM

PDXKTM

Portland

Sun 1/18

9:30 pm-4:25 pm

2 stops53h 10m

Kathmandu Tribhuvan

Thu 2/19

5:40 pm-8:33 pm

2 stops40h 38m

$1,132

PortlandKathmandu

PDX - KTM

PDXKTM

Portland

Sun 4/12

9:00 am-7:55 am

2 stops34h 10m

Kathmandu Tribhuvan

Thu 4/30

6:00 pm-8:35 pm

2 stops39h 20m

$1,150

PortlandKathmandu

PDX - KTM

PDXKTM

Portland

Mon 4/13

1:35 pm-4:45 pm

2 stops38h 25m

Kathmandu Tribhuvan

Wed 4/29

6:00 pm-10:31 pm

2 stops41h 16m

$1,150

PortlandKathmandu

PDX - KTM

PDXKTM

Portland

Sun 4/12

1:35 pm-4:45 pm

2 stops38h 25m

Kathmandu Tribhuvan

Fri 5/1

6:00 pm-10:31 pm

2 stops41h 16m

$1,165

PortlandKathmandu

PDX - KTM

PDXKTM

Portland

Sat 4/11

10:10 am-4:45 pm

2 stops41h 50m

Kathmandu Tribhuvan

Wed 4/29

6:00 pm-10:31 pm

2 stops41h 16m

$1,190

PortlandKathmandu

PDX - KTM

PDXKTM

Portland

Sat 1/24

1:38 pm-4:25 pm

2 stops37h 02m

Kathmandu Tribhuvan

Mon 2/23

5:40 pm-4:50 pm

2 stops36h 55m

$1,192

PortlandKathmandu

PDX - KTM

PDXKTM

Portland

Mon 4/13

1:35 pm-4:45 pm

2 stops38h 25m

Kathmandu Tribhuvan

Thu 4/30

6:00 pm-10:31 pm

2 stops41h 16m

$1,195

PortlandKathmandu

PDX - KTM

PDXKTM

Portland

Mon 4/13

1:35 pm-4:45 pm

2 stops38h 25m

Kathmandu Tribhuvan

Fri 5/1

6:00 pm-10:31 pm

2 stops41h 16m

$1,198

Flights are sorted by cheapest round-trip flights first.

Deals found on 12/26

Showing 1-10 of 13 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 December.
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
OvagoPrice Accuracy2 starsTrust Score*2 stars

*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 December 26, 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 $939). Flying from Portland to Kathmandu in June is currently the most expensive (average of $1,547). 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 December 28, 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.

How much does it cost to fly round-trip from Portland to Kathmandu?

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 December 28, 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
1,421 reviews

Crew

8.6

Overall

8.1

Boarding

8.3

Food

7.8

Entertainment

8.0

Comfort

8.0

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
1,421 reviews
Singapore Airlines
8.1
Very good
1,421 reviews

Crew

8.6

Overall

8.1

Boarding

8.3

Food

7.8

Entertainment

8.0

Comfort

8.0

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
1,109 reviews
Singapore Airlines
8.1
Very good
1,421 reviews

Crew

8.6

Overall

8.1

Boarding

8.3

Food

7.8

Entertainment

8.0

Comfort

8.0

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
3,698 reviews
Singapore Airlines
8.1
Very good
1,421 reviews

Crew

8.6

Overall

8.1

Boarding

8.3

Food

7.8

Entertainment

8.0

Comfort

8.0

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?

    Qatar Airways can get you from Portland to Kathmandu in just under 38h 25m. 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 $1,093. Additional round-trip tickets that might be worth considering are offered by Cathay Pacific and Qatar Airways, with the lowest prices starting at $1,128 and $1,191, respectively. You may be able to fly from Portland to Kathmandu for 27% 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 $939). Flying from Portland to Kathmandu in June is currently the most expensive (average of $1,547). 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

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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 December 28, 2025.
AirlineCheapestAverageFlexibilityOn-time
Singapore AirlinesCheapest$1,093Average$1,364FlexibilityNo cancel feeOn-time81%
Cathay PacificCheapest$1,128Average$1,218FlexibilityNo cancel feeOn-time72%
Qatar AirwaysCheapest$1,192Average$1,526FlexibilityNo cancel feeOn-time68%

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