$534 Cheap Flights from Chiang Mai (CNX) to Portland (PDX)

View $534 flight on Tue, Nov 4, 2025Opens in a new window

Popular airlines from Chiang Mai Intl. Airport (CNX) to Portland International Airport (PDX)

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Cheap Flights from Chiang Mai to Portland (CNX-PDX)

Prices were available within the past 7 days and start at $534 for one-way flights and $865 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Korean Air
Tue, Mar 3 - Wed, Mar 11
CNX
Chiang Mai
PDX
Portland
$865 Roundtrip, found 17 hours ago
$865
Roundtrip
found 17 hours ago
Select Korean Air flight, departing Tue, Mar 3 from Chiang Mai to Portland, returning Wed, Mar 11, priced at $865 found 17 hours ago
Korean Air
Tue, Jan 20 - Tue, Feb 3
CNX
Chiang Mai
PDX
Portland
$866 Roundtrip, found 2 hours ago
$866
Roundtrip
found 2 hours ago
Select Korean Air flight, departing Tue, Jan 20 from Chiang Mai to Portland, returning Tue, Feb 3, priced at $866 found 2 hours ago
Korean Air
Tue, Mar 3 - Wed, Mar 11
CNX
Chiang Mai
PDX
Portland
$872 Roundtrip, found 17 hours ago
$872
Roundtrip
found 17 hours ago
Select Korean Air flight, departing Tue, Mar 3 from Chiang Mai to Portland, returning Wed, Mar 11, priced at $872 found 17 hours ago
Korean Air
Wed, Mar 4 - Fri, Mar 13
CNX
Chiang Mai
PDX
Portland
$873 Roundtrip, just found
$873
Roundtrip
just found
Select Korean Air flight, departing Wed, Mar 4 from Chiang Mai to Portland, returning Fri, Mar 13, priced at $873 just found
Delta
Fri, Jan 23 - Sun, Feb 8
CNX
Chiang Mai
PDX
Portland
$885 Roundtrip, found 2 hours ago
$885
Roundtrip
found 2 hours ago
Select Delta flight, departing Fri, Jan 23 from Chiang Mai to Portland, returning Sun, Feb 8, priced at $885 found 2 hours ago
Korean Air
Fri, Jan 23 - Tue, Feb 3
CNX
Chiang Mai
PDX
Portland
$890 Roundtrip, found 2 hours ago
$890
Roundtrip
found 2 hours ago
Select Korean Air flight, departing Fri, Jan 23 from Chiang Mai to Portland, returning Tue, Feb 3, priced at $890 found 2 hours ago
Korean Air
Fri, Feb 27 - Sun, Mar 8
CNX
Chiang Mai
PDX
Portland
$897 Roundtrip, found 17 hours ago
$897
Roundtrip
found 17 hours ago
Select Korean Air flight, departing Fri, Feb 27 from Chiang Mai to Portland, returning Sun, Mar 8, priced at $897 found 17 hours ago
Air Canada
Wed, Jan 21 - Mon, Feb 9
CNX
Chiang Mai
PDX
Portland
$905 Roundtrip, found 2 hours ago
$905
Roundtrip
found 2 hours ago
Select Air Canada flight, departing Wed, Jan 21 from Chiang Mai to Portland, returning Mon, Feb 9, priced at $905 found 2 hours ago
EVA Airways
Fri, Dec 12 - Wed, Apr 29
CNX
Chiang Mai
PDX
Portland
$955 Roundtrip, found 5 days ago
$955
Roundtrip
found 5 days ago
Select EVA Airways flight, departing Fri, Dec 12 from Chiang Mai to Portland, returning Wed, Apr 29, priced at $955 found 5 days ago
China Airlines
Thu, Dec 25 - Thu, Jan 8
CNX
Chiang Mai
PDX
Portland
$964 Roundtrip, found 2 hours ago
$964
Roundtrip
found 2 hours ago
Select China Airlines flight, departing Thu, Dec 25 from Chiang Mai to Portland, returning Thu, Jan 8, priced at $964 found 2 hours ago

Frequently asked questions

How much does a flight from Chiang Mai Intl. Airport (CNX) to Portland Intl. Airport (PDX) cost?
Lock in a cheap one-way flight from $534 or cheap return flight from $865 from Chiang Mai Intl. Airport (CNX) to Portland Intl. Airport (PDX) 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 Chiang Mai Intl. Airport (CNX) to Portland Intl. Airport (PDX)?
March is the cheapest month to fly from CNX to PDX. Avoiding peak travel times is often the key to finding a great deal.
What is the cheapest airline that flies from Chiang Mai Intl. Airport (CNX) to Portland Intl. Airport (PDX)?
To find the cheapest airline that'll fly you from CNX to PDX, use Expedia's filter tool. Customize your search based on what's important to you, such as preferred carriers and ideal departure window. You can then sort your results by "Price (lowest to highest)" to discover the cheapest flight right away.
How many flights per day from Chiang Mai Intl. Airport (CNX) to Portland Intl. Airport (PDX)?
Direct flights from Chiang Mai Intl. Airport (CNX) to Portland Intl. Airport (PDX) aren't available daily, so you'll need to take a flight with a layover. Explore your options with Expedia's filters. Enter your travel dates and select either "1 Stop" or "2+ Stops."
What day of the week has the most flights from CNX to PDX?
Friday is typically the busiest day for flights, while Tuesday is often the quietest.* Just remember that flight schedules can change based on various factors, including the time of year and carrier.*Busiest/quietest day to travel is based on Expedia flight demand through January to December 2024.
What is the best time to fly from Chiang Mai Intl. Airport (CNX) to Portland Intl. Airport (PDX)?
To avoid possible delays on the Chiang Mai Intl. Airport (CNX) to Portland Intl. Airport (PDX) route, travel before 3 PM. Later departures have a 22% higher chance of cancellation.**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 Chiang Mai Intl. Airport (CNX) to Portland Intl. Airport (PDX) last-minute?
Booking your plane ticket from CNX to PDX right before your getaway is generally more expensive. But if you're flexible with your schedule, you could score a cheap last-minute fare.
Is it cheaper to book a CNX to PDX flight and hotel package?
Compared with arranging flights and hotels separately, booking a CNX to PDX flight and hotel package with Expedia could result in significant savings. Better yet, managing everything in one place takes the hassle out of planning your trip. Just secure your flights and select from our wide range of hotels, then personalize your trip with other add-ons like car rentals and activities.
Can I cancel or change the date of my flight from Chiang Mai Intl. Airport (CNX) to Portland Intl. Airport (PDX)?
You can usually reschedule or cancel your CNX to PDX flight. However, if the booking was made more than 24 hours ago, additional fees may apply. Refer to your airline's policies in your itinerary to see what changes are allowed and whether any costs are involved. You'll also find further details on our Customer Service portal.

Travel information

Origin airport
Chiang Mai Intl.
Destination airport
Portland Intl.
Airlines serving
Air Canada, Delta, KLM, Korean Air, STARLUX Airlines
Roundtrip price
$865
Distance
7283 mi

Book with confidence

Chiang Mai to Portland Flights

The cheapest times to fly from Chiang Mai to Portland

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 Chiang Mai to Portland are during the month of March. You can find some of the cheapest flights from Chiang Mai to Portland with Expedia's search tool and vast selection of airlines.

 

The best time to book a flight from Chiang Mai to Portland

Sunday is one of the best days to book for cheap flights from Chiang Mai to Portland: 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 Chiang Mai to Portland

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 Chiang Mai to Portland in 2025. You can also book with separate airlines for your outbound and return journeys, from $534 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 Chiang Mai to Portland 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 Chiang Mai to Portland 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.

 

Chiang Mai to Portland Flights

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*Available to One Key members.