The cheapest times to fly from PDX to CXR are

  • January 1st to April 22nd
  • July 2nd to July 15th
  • October 22nd to December 16th

based on data collected exclusively by Champion Traveler across tens of millions of flights. Among all the dates above, the very cheapest time to fly from PDX to CXR is late October. Prices can be as high as $4538 for Tuesday flights during early September, or as low as $926 for Friday flights around late October.


When to Fly to Nha Trang

Flying from Portland, OR (PDX) to Nha Trang (CXR) will usually cost between $1015 to $3704 per person if booking more than four weeks in advance. On average the very cheapest time to fly is late October with an average ticket price of $1002. Due to high demand the most expensive time to fly is early September, with an average price of $2728. Planning your trip to low-cost times can easily save you $1726 on economy flights and even more on first-class flights. Generally, any price below $1211 can be considered a good price for a round-trip PDX to CXR flight.

See below for a graph of average weekly prices for the PDX to CXR route. All prices are for round-trip tickets in USD.

PDX to CXR Flight Prices

Compared to other flights, the PDX to CXR flight is slightly more expensive than the average and costs slightly more than the average flight leaving from Portland. The average price per mile (for a direct flight) is $0.1, which is far below average.


Flight Prices by Day of the Week

Friday is usually the cheapest day to fly to CXR, and Monday the cheapest day to fly back into PDX. Tuesdays are the most expensive days to fly to Nha Trang, and Saturdays are the most expensive days to return to Portland. Selecting flights on the least expensive days could save you up to $459 (23%) on this flight.

Departing prices are for round-trip flights returning on the day of departure. For example, a flight departing on Friday and returning a week later will cost an average of $1238. Return trip prices are from the CXR to PDX flight, and often highlight the quality of our data in showing the same trend.

Departing Prices by Day

Departure Day Prices

Return Trip Prices by Day

Return Day Prices


Nonstop Flights and Layovers

Travelers looking to fly from PDX to CXR can generally find a 2-layover flight. Because there is not usually a direct flight option the real-world direct flight time of 14 hour 9 minutes may not be realistic.


Flight Hacking PDX to CXR

Flight hacking is when you book two tickets instead of a layover, sometimes with different airlines. You will need to either bring only a carry-on bag (highly recommended) or leave yourself plenty of time to go through security again. Flight hacking is completely allowed, but airlines don’t always tell you the cheapest way to get from PDX to CXR — but Champion Traveler does!

Hack #1: Ho Chi Minh City (PDX > SGN > CXR)

  • Price for both tickets: $936
  • Average savings: $275 (22.71%)

See PDX to SGN flights

Hack #2: Hong Kong (PDX > HKG > CXR)

  • Price for both tickets: $957
  • Average savings: $254 (20.97%)

See PDX to HKG flights

Hack #3: Beijing (PDX > PEK > CXR)

  • Price for both tickets: $979
  • Average savings: $232 (19.16%)

See PDX to PEK flights


Flight Questions Answered

Still have questions about flying from PDX to CXR? We’ve got answers.

Which airlines fly this route?

You can find 11 major airlines flying this route most often: Air China, Alaska, American, ANA, Asiana, China Eastern, China Southern, Delta, Korean Air, United, Vietnam Airlines, and potentially more during busy seasons.

How far away is it from Cam Ranh International Airport to Portland International Airport?

The distance between the two airports is roughly 7318 miles or 11777 kilometers.

How long does it take to fly from PDX to CXR?

The real-world flight time for a nonstop PDX to CXR flight is about 14 hour 9 minutes.

How many flights go between Portland, OR and Nha Trang?

It depends on the day of the week and the date, but a typical day might have around 20 available flights from PDX to CXR.


Airport Location Info


Departing Airport

Origination code PDX
Origination airport name Portland International Airport
City Portland, OR
Country the United States
Latitude 45.6
Longitude -122.6

Return Airport

Destination code CXR
Destination airport name Cam Ranh International Airport
City Nha Trang
Country Vietnam
Latitude 12
Longitude 109.2


Other Resources

Please note that while we’ve worked hard to analyzed tens of millions of flights to get you this data, we do not calculate current live prices or guarantee pricing. Please see our partners using the links above for current offers.