PDX - KTM

$521 Find Cheap Flights from Portland to Kathmandu

This is the cheapest one-way flight price found by a KAYAK user in the last 72 hours by searching for a flight from Portland to Kathmandu departing on 3/4. Fares are subject to change and may not be available on all flights or dates of travel. Click the price to replicate the search for this deal.
1 adult
1 adult, Economy, 0 bags

KAYAK searches hundreds of travel sites at once for deals on flights to Kathmandu

 
These are the airlines KAYAK users have selected most often from within our search results in flight searches from Portland to Kathmandu, as well as popular online travel agencies
These are the airlines KAYAK users have selected most often from within our search results in flight searches from Portland to Kathmandu, as well as popular online travel agencies
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Everything you should know

Cheapest round-trip
$1,161
Overall average: $1,440
Qatar Airways
Thu 5/7Sat 5/16
PDX - KTM • 2 stops
Cheapest one-way
$521
Typical prices: $531-$711
Qatar Airways
Wed 3/4
PDX - KTM • 2 stops
Top airlines
Qatar Airways
Cheapest • from $1,161 (round-trip)
Singapore Airlines
Best reviews • 8.2 score
Airline reviews
Airline reviews
+1
+1
Airline reviews
Airline reviews
+1
When to book
4 weeks
in advance
Our data shows that travelers who book at least 4 weeks in advance save around 23% compared to booking last minute.
Insights
Insights
Insights
Insights
When to travel
January
Cheapest • 20% price drop
January
Most popular
Good to know
Good to know
+1
+1
Good to know
Good to know
+1
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KAYAK searches 100s of sites at once to find you the best travel deals.
We hope you love your trip to Kathmandu!
Flight Deals
Booking Insights
Flight Deals

Cheap Flights from Portland to Kathmandu (PDX-KTM)

 
Here are some of the best deals found on KAYAK recently from the most popular airlines for round-trip flights from Portland to Kathmandu that are departing in the next months. While these flights were available on KAYAK in the last 72 hours, prices and availability are subject to change and deals may expire.
Discover the best prices for you by selecting your travel dates on KAYAK.

Recent round-trip flight deals from Portland to Kathmandu

Thu, May 7 - Sat, May 16
Qatar Airways Logo
1:52 pm - 7:55 am
PDX
-
KTM
29h 18m
2 stops
Qatar Airways Logo
6:15 pm - 9:34 pm
KTM
-
PDX
40h 04m
2 stops
$1,161Qatar Airways
Mon, Apr 20 - Tue, May 12
Multiple Airlines Logo
7:05 am - 9:45 pm
PDX
-
KTM
49h 55m
2 stops
Multiple Airlines Logo
11:00 pm - 7:05 pm
KTM
-
PDX
32h 50m
2 stops
$1,164Multiple Airlines
Thu, Apr 23 - Sun, May 17
Qatar Airways Logo
1:52 pm - 5:00 pm
PDX
-
KTM
38h 23m
2 stops
Qatar Airways Logo
6:15 pm - 9:35 pm
KTM
-
PDX
40h 05m
2 stops
$1,165Qatar Airways
Mon, Apr 20 - Tue, May 12
Qatar Airways Logo
10:31 am - 7:55 am
PDX
-
KTM
32h 39m
2 stops
Qatar Airways Logo
6:15 pm - 9:34 pm
KTM
-
PDX
40h 04m
2 stops
$1,184Qatar Airways
Fri, Apr 24 - Sat, May 16
Qatar Airways Logo
1:52 pm - 7:55 am
PDX
-
KTM
29h 18m
2 stops
Qatar Airways Logo
6:15 pm - 9:34 pm
KTM
-
PDX
40h 04m
2 stops
$1,201Qatar Airways
Wed, May 13 - Wed, Aug 26
Multiple Airlines Logo
9:30 pm - 9:30 pm
PDX
-
KTM
35h 15m
2 stops
Multiple Airlines Logo
10:50 pm - 4:50 pm
KTM
-
PDX
30h 45m
2 stops
$1,202Multiple Airlines
Fri, Feb 27 - Fri, Mar 6
Qatar Airways Logo
8:30 am - 5:50 pm
PDX
-
KTM
43h 35m
2 stops
Qatar Airways Logo
5:40 pm - 9:58 pm
KTM
-
PDX
42h 03m
2 stops
$1,204Qatar Airways
Wed, Apr 22 - Thu, May 14
Qatar Airways Logo
1:52 pm - 5:00 pm
PDX
-
KTM
38h 23m
2 stops
Qatar Airways Logo
10:55 am - 4:50 pm
KTM
-
PDX
42h 40m
2 stops
$1,231Qatar Airways
Thu, Mar 12 - Sun, Mar 22
Qatar Airways Logo
6:00 am - 5:50 pm
PDX
-
KTM
47h 05m
2 stops
Qatar Airways Logo
5:40 pm - 9:52 pm
KTM
-
PDX
40h 57m
2 stops
$1,241Qatar Airways
Wed, May 13 - Wed, Aug 26
Multiple Airlines Logo
9:30 pm - 9:30 pm
PDX
-
KTM
35h 15m
2 stops
Multiple Airlines Logo
10:50 pm - 8:31 pm
KTM
-
PDX
34h 26m
3 stops
$1,243Multiple Airlines
Booking Insights

KAYAK's insights & trends for Portland to Kathmandu flights

Get data-powered insights and trends into flights from Portland to Kathmandu to help you find the cheapest flights, the best time to fly and much more.

What is the cheapest month to fly from Portland to Kathmandu?

To calculate monthly average prices, KAYAK takes all prices for each month over the last year for round-trip flights from Portland to Kathmandu, removes the top 0.1% to account for outliers, and then takes the median of all values for each month.

The cheapest month for flights from Portland to Kathmandu is January, where tickets cost $1,234 (return) on average. On the other hand, the most expensive months are June and August, where the average cost of round-trip tickets is $2,403 and $1,703 respectively.

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

To calculate weekly average prices, KAYAK takes all prices for each week before departure over the last year for round-trip flights from Portland to Kathmandu, removes the top 0.1% to account for outliers, and then takes the average of all the values for each week.

To get a below average price on the flight from Portland to Kathmandu, you should book around 4 weeks before departure, which saves you about 23% compared to booking last minute. For the absolute cheapest price, our data suggests you should book 12 weeks before departure.

Good to know

Low seasonJune
Cheapest flight$521
Best time to beat the crowds but there is an average 55% increase in price.
Most popular time to fly and prices are also 21% lower on average.
Flight from Portland to Kathmandu

When to book flights from Portland to Kathmandu

Are your dates flexible? Find out the best times to travel from Portland to Kathmandu based on our flight data from the last year. Discover the cheapest month and even day to fly.
Estimated round-trip price
KAYAK looks at all historical flight data for each date to provide a predicted price for one-way trips or round-trips with a duration up to 40 days. While we try to provide actual minimum prices for each date, some prices are predictions and actual prices may differ.

FAQs for booking flights from Portland to Kathmandu

  • Where can I spend the night at Kathmandu airport (KTM)?

    This airport is open 24h, hence it is safe. However, the airport doesn’t have a specific place designed for passengers to sleep. You can go to terminals 1 and 2, where you will be able to find a corner and seat that you can sleep on as much as they are not comfortable enough. For a comfortable sleep, carry an extra travel blanket.

  • Are there onsite hotels at Portland airport?

    There are many onsite hotels that you can consider booking when you want. For instance, you can book your stay with Radisson Hotel Portland Airport. It offers free shuttle services, comfortable beds, and free breakfast. You can also consider staying at the Hampton Inn Portland- Airport, Sheraton Portland Airport Hotel, and Country Inn & Suites by Radisson. These are some of the top-rated hotels near Portland airport.

  • What amenities does Kathmandu airport offer nursing mothers?

    When traveling through Kathmandu airport with an infant, there are breastfeeding rooms at both arrival and departure hall areas. These rooms are specially made for nursing mothers to breastfeed, change diapers, and pump milk. They are private and provide more comfort. They are also equipped with cleaning electronics and seats.

  • How can I fly from Portland to Kathmandu?

    From Portland airport to Kathmandu airport, you can use several airlines, including Singapore Airlines or Qatar Airways. These airlines offer connecting services, usually with layovers at SEA or DOH.

  • What is the cheapest flight from Portland to Kathmandu?

    In the last 3 days, the lowest price for a flight from Portland to Kathmandu was $521 for a one-way ticket and $1,161 for a round-trip.

  • Do I need a passport to fly between Portland and Kathmandu?

    A passport is required to fly from Portland to Kathmandu.

  • Which aircraft models fly most regularly from Portland to Kathmandu?

    We unfortunately don’t have that data for this specific route.

  • Which airline alliances offer flights from Portland to Kathmandu?

    Star Alliance, and oneworld are the airline alliances operating flights between Portland and Kathmandu, with Star Alliance being the most commonly used for this route.

  • What is the most popular layover when flying to Kathmandu from Portland?

    Doha is the most popular layover city among KAYAK users traveling from Portland to Kathmandu.

  • Which is the best airline for flights from Portland to Kathmandu, Singapore Airlines or Cathay Pacific?

    The two airlines most popular with KAYAK users for flights from Portland to Kathmandu are Singapore Airlines and Cathay Pacific. With an average price for the route of $1,353 and an overall rating of 8.2, Singapore Airlines is the most popular choice. Cathay Pacific is also a great choice for the route, with an average price of $1,370 and an overall rating of 7.6.

  • How does KAYAK find such low prices on flights from Portland to Kathmandu?

    KAYAK is a travel search engine. That means we look across the web to find the best prices we can find for our users. With over 2 billion flight queries processed yearly, we are able to display a variety of prices and options on flights from Portland to Kathmandu.

  • How does KAYAK's flight Price Forecast tool help me choose the right time to buy my flight ticket from Portland to Kathmandu?

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to Kathmandu from Portland is likely to change within 7 days, so travelers know whether to wait or book now.

  • What is the Hacker Fare option on flights from Portland to Kathmandu?

    Hacker Fares allow you to combine one-way tickets in order to save you money over a traditional round-trip ticket. You could then fly to Kathmandu with an airline and back to Portland with another airline. Booking your flights between Portland and KTM can sometimes prove cheaper using this method.

  • What is KAYAK's "flexible dates" feature and why should I care when looking for a flight from Portland to Kathmandu?

    Sometimes travel dates aren't set in stone. If your preferred travel dates have some wiggle room, flexible dates will show you all the options when flying to Kathmandu from Portland up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

KAYAK’s top tips for finding a cheap flight from Portland to Kathmandu

  • It is important to arrive at the airport 2h before your departure time. This is because the Portland airport (PDX) is usually crowded, and you will need to go through the security check-in points, get your boarding pass, and head to your boarding gate on time. Arriving at the airport this early will give you enough time to do all this without hassles.
  • For travelers seeking a location to keep their cars when flying out, Portland International Airport offers a number of parking spaces. There is a long-term parking lot near terminal 1 on the third level that you can utilize or the one down in the basement. Additionally, they offer parking for regular drivers who want to stop for a few hours or who are waiting to pick up passengers. The new garage at the gate is next to this parking lot on the ground floor.
  • Before boarding your flight to Portland, you can decide to grab something to eat at the restaurants and cafes at the arrival and departure hall. They also have a vending machine that is available for all passengers who want to get something quick instead of going to the restaurants.
  • Due to the long flight from Portland to Kathmandu, the airlines operating along this route offer exceptional services to passengers. For instance, Singapore Airlines offer meals and beverages on board. They also have entertainment like games which you can play with other passengers. Alternatively, you can watch movies from the seat TV if you are looking for a distraction. They also have a kid's channel to keep the young travelers occupied.
  • You can consider flying with Singapore Airlines or Qatar Airways if you want to make use of the lounge amenities at Kathmandu airport. Both airlines have world-class lounges with comfortable couches, offer good food and beverages, and WiFi at the airport.

Reviews of the top 3 airlines serving from Portland to Kathmandu

 
See real verified KAYAK customer reviews for airlines flying from Portland to Kathmandu. Airline scores are aggregated from all reviews left by passengers on KAYAK after flying with an airline. KAYAK doesn’t show reviews that are older than 5 years. Learn how KAYAK collects reviews.
Need help choosing which airline to fly with from Portland to Kathmandu? KAYAK airline reviews give an overall score for each airline based on loads of factors, including comfort, boarding, in-flight entertainment and more, to make your decision easier. See airline scores according to verified KAYAK customer reviews.
8.2
Singapore AirlinesOverall score based on 1443 reviews
7.8Food
8.3Boarding
8.6Crew
8.0Comfort
8.0Entertainment
Airline reviews

Service was very good, food and entertainment systems were good

10.0 ExcellentGary, Jan 2026
CAN - SIN
Read more Singapore Airlines reviews

Service was very good, food and entertainment systems were good

I wish there was a little more leg room between the seats. The recline was good and seats overall were comfortable. I also didn’t like the 2-4-2 configuration.

toilets could be cleaned more frequently, everything else was pretty good.

The flight crew was phenominal! We couldn't have asked for any better. They were experienced professionals.

Wish the underseat compartment don’t have a restriction, can fit a personal item such as backpack fully like most Boeing

Crew and service excellent. 2 hour delay for takeoff. SQ app showed flight on time.

Good service and food. For buying items on flight should be preordered as they don’t keep much stock on board.

We were not given option for meals since they ran out of the other option but good thing the remaining options tasted great.

Horrendous. We upgraded and they took the money but cancelled one of our tickets. The recline action didn’t work on the seats for the flight from Singapore to London, pre booked meals but they seemed to have disappeared as well.. Phone customer service was horrendous. Took 5 phone calls and no fix. Craig at the airport was the only one who seemed to be able to get the ticket back.

Very good flight from Boarding to landing -efficient and comfortable with decent entertainment options

I was mid plane and they were already out of the main beef entree....ugh!

I didn't have much experience with Cathay Pacific airlines because of delay and missed connections, the bulk of the trip was on Japan Airlines.

Flight delayed first from bad weather, then after boarding there was a problem with the plane. We had to get off and onto another plane...connections were missed and the trip took an additional 10 hours!! Pre-paid seatting was not honored due ro last minute carrier changes. Most of the trip was on Japan Airline.

Flight from Hong Kong to LAX was late, the plane was grubby, overcrowded and hot. I recently flew Starlux and that was a MUCH better experience.

The crew, pilots and flight attendants were all amazing. What could be better is reinforcing that seats cannot be reclined at departure and landing. I had a person seated in front of me who had her seat all the way inclined, including during take-off - after the crew asked her to seat upright. Cathay Pacific should reinforce this safety request and perhaps penalize those who don't follow it. I felt very unsafe with this person limiting my space and perhaps putting my life in danger in the "unlikely" case of an emergency.

The bed was alright in business class. Food variety and quality were not up to the mark compared to the business class airfare.

Crew and food were great in-flight. We had a 2 hour delay, no communication, and just got left in a limbo. The crew arrived late and they were running checkouts on the plane (which is important, but why not doing it earlier?) Cathay did nothing to about the delay, and a lot of people missed their connection flights. I had to run and got stuck at checkpoint, which made my entire trip very unpleasant. Got to my gate 5 mins prior to them closing it.

My flight was suppose to be at 7:45pm to fly but it didnt fly out until 8:55 to dallas so then all of my other flights was late and delay ihad to wait at the airport for extra 14 hours to be able to get on a different plane

There were delays at boarding and landing. These events resulted in a tight transfer time in HK. Poor signage for transfers. Finally, lost luggage at final destination.

It was good. The planes needed to be updated though, they were dated and the entertainment systems were old. Service was amazing. The pre-booked meals were lacklustre.

When we checked in at the Siem Reap Airport in Cambodia, we were only given three boarding passes and told that we would have to check in with American when we arrived in Boston. This was a source of stress for us. After we landed in Boston, we had a long passage from Terminal E to Terminal B (American Airline ticketing counter). Because the electronic ticketing kiosks for check-in would not recognize our Confirmation Code, we had to wait for an hour in a long line where only two AA reps were taking care of Special Services passengers. In many years of both business and recreational travel, I have never had this experience. I would expect more from AA being in partnership with other airlines to do a better job with this.

Our experience on the Doha to Hyderabad segment was extremely stressful due to prolonged delays and a lack of clear communication from the airline. We were traveling as a family, including children, and the uncertainty around timing and next steps caused significant distress. There was very little proactive information provided during the delay, and we were not given clear written explanations about what was happening or how long it might take. This made it difficult to manage the situation, especially while caring for children in a transit environment. In addition, one member of our party was ultimately unable to continue travel, which added to the emotional strain and disruption of the trip. Overall, the experience highlighted gaps in communication, customer care, and handling of unexpected situations. We are sharing this feedback so that future passengers, especially families, are supported with clearer communication and better assistance during irregular operations.

The seat cushions are absolutely lacking, not sure if they know the passengers are traveling for 14 hours straight, but the padding made our back and butt ache like crazy. The entertainment console had its own problems, either the headphone jack wasn't working or the power outlet via usb or ac outlet was not working. Not to mention the seat handles were not adjustable in some planes in the middle or on the aisle. Qatar/Indigo may be operating a very old fleet of planes to make as much profit as possible, but passengers may not be following them for long, should this treatment of its customers continue. Qatar/Indigo, wake up and do it right by your customers, or they may not be your customers anymore.

It would help id flight crew were not rude and showed some courtesy. They were shouting at passengers and yelling instructions as if we were school children at lunch cafeteria!!

All good. Over four hours flight if provided snacks like Qatar Airways would be better

Lobster starter in business class was not good, tough, served cold, and without butter. Movie selection was missing latest releases, did not offer older classic, high quality movies

Food was absolutely pathetic. I wasted so much food which I thought was inedible. I also loathe the inflight entertainment system which has very little content

My entire row did not have power for the full duration of a 14.5 hour flight. Could not charge any devices such as laptop or phones for the entirety of the long flight. The flight attendants tried to remedy the issue by resetting the power, but were not successful. The only other solution provided was to move me to another seat on the plane which was in the middle row. I had paid for a “preferred” seat that was a window seat. This was a downgrade being offered due to the power issue.

Nothing to complain. The staff and flight was good especially the seats which was better compared than the cloth ones on Qatar airways

I was travelling 3.5 years after. Agree Economy is no business class but the food was mediocre. Ordered a Hindu meal, the salads were bitter . The food was really below quality and had no tast from what I had in the past. Indian Railways probably have a better quality food when compared. However the kids meal was really nice and really appreciate how they were taken care of. The restrooms were dirty .

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

Information on your arrival and departure airports