$480 Cheap Flights from Portland (PDX) to Chiang Mai (CNX)

View $480 flight on Tue, Oct 28, 2025Opens in a new window

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

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

Prices were available within the past 7 days and start at $480 for one-way flights and $868 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Alaska Airlines
Thu, Jan 15 - Wed, Jan 21
PDX
Portland
CNX
Chiang Mai
$868 Roundtrip, found 3 hours ago
$868
Roundtrip
found 3 hours ago
Select Alaska Airlines flight, departing Thu, Jan 15 from Portland to Chiang Mai, returning Wed, Jan 21, priced at $868 found 3 hours ago
Alaska Airlines
Wed, Apr 29 - Wed, May 13
PDX
Portland
CNX
Chiang Mai
$869 Roundtrip, found 8 hours ago
$869
Roundtrip
found 8 hours ago
Select Alaska Airlines flight, departing Wed, Apr 29 from Portland to Chiang Mai, returning Wed, May 13, priced at $869 found 8 hours ago
Alaska Airlines
Wed, Apr 29 - Wed, May 13
PDX
Portland
CNX
Chiang Mai
$875 Roundtrip, found 8 hours ago
$875
Roundtrip
found 8 hours ago
Select Alaska Airlines flight, departing Wed, Apr 29 from Portland to Chiang Mai, returning Wed, May 13, priced at $875 found 8 hours ago
Alaska Airlines
Sun, Jan 18 - Thu, Feb 5
PDX
Portland
CNX
Chiang Mai
$878 Roundtrip, found 3 days ago
$878
Roundtrip
found 3 days ago
Select Alaska Airlines flight, departing Sun, Jan 18 from Portland to Chiang Mai, returning Thu, Feb 5, priced at $878 found 3 days ago
Alaska Airlines
Sun, Mar 29 - Tue, May 5
PDX
Portland
CNX
Chiang Mai
$879 Roundtrip, found 2 hours ago
$879
Roundtrip
found 2 hours ago
Select Alaska Airlines flight, departing Sun, Mar 29 from Portland to Chiang Mai, returning Tue, May 5, priced at $879 found 2 hours ago
Alaska Airlines
Wed, Apr 29 - Wed, May 13
PDX
Portland
CNX
Chiang Mai
$882 Roundtrip, found 8 hours ago
$882
Roundtrip
found 8 hours ago
Select Alaska Airlines flight, departing Wed, Apr 29 from Portland to Chiang Mai, returning Wed, May 13, priced at $882 found 8 hours ago
STARLUX Airlines
Thu, Feb 26 - Sat, Mar 14
PDX
Portland
CNX
Chiang Mai
$922 Roundtrip, found 22 hours ago
$922
Roundtrip
found 22 hours ago
Select STARLUX Airlines flight, departing Thu, Feb 26 from Portland to Chiang Mai, returning Sat, Mar 14, priced at $922 found 22 hours ago
Delta
Mon, Mar 9 - Wed, Mar 25
PDX
Portland
CNX
Chiang Mai
$928 Roundtrip, found 14 hours ago
$928
Roundtrip
found 14 hours ago
Select Delta flight, departing Mon, Mar 9 from Portland to Chiang Mai, returning Wed, Mar 25, priced at $928 found 14 hours ago
Korean Air
Wed, Jan 14 - Thu, Jan 22
PDX
Portland
CNX
Chiang Mai
$933 Roundtrip, found 3 hours ago
$933
Roundtrip
found 3 hours ago
Select Korean Air flight, departing Wed, Jan 14 from Portland to Chiang Mai, returning Thu, Jan 22, priced at $933 found 3 hours ago
Air Canada
Wed, Jan 28 - Mon, Feb 9
PDX
Portland
CNX
Chiang Mai
$1,129 Roundtrip, found 2 days ago
$1,129
Roundtrip
found 2 days ago
Select Air Canada flight, departing Wed, Jan 28 from Portland to Chiang Mai, returning Mon, Feb 9, priced at $1,129 found 2 days ago

Alternative airports near Chiang Mai

Prices were available within the past 7 days. Prices and availability are subject to change.

Select flight to Chiang Mai Intl. CNX. Cheapest and Closest option available. Average driving time to city center is 10 minutes. Flights from $1,013
CNX
Chiang Mai Intl.
CheapestClosest
Average driving time to city center10 min
Flights from $1,013

Frequently asked questions

How much does a flight from Portland Intl. Airport (PDX) to Chiang Mai Intl. Airport (CNX) cost?
Grab a cheap one-way flight from $480 or cheap return flight from $868 from Portland Intl. Airport (PDX) to Chiang Mai Intl. Airport (CNX) with Expedia. Enter your travel dates and sort by "Price (lowest to highest)" to see our cheapest flight deals on this route.
What is the cheapest month to fly from Portland Intl. Airport (PDX) to Chiang Mai Intl. Airport (CNX)?
Planning your trip for January may help you find better deals, as it's the cheapest month for flights between PDX and CNX. You'll typically find the lowest prices during the off-season.
What is the cheapest airline that flies from Portland Intl. Airport (PDX) to Chiang Mai Intl. Airport (CNX)?
Expedia's filter tool lets you easily compare different airlines, flight durations and fares all in one place. Select your preferences, then sort by "Price (lowest to highest)" to find the carrier with the cheapest PDX to CNX flight.
How many flights per day from Portland Intl. Airport (PDX) to Chiang Mai Intl. Airport (CNX)?
You'll need to catch a flight with a layover if you're traveling from Portland Intl. Airport (PDX) to Chiang Mai Intl. Airport (CNX). There are no daily direct flights on this route. However, simply filter your search to include one or more stops to discover the best option for your trip.
What day of the week has the most flights from PDX to CNX?
You'll generally find Tuesday the quietest day for flights, while Fridays are often the busiest.* However this can change from season to season and during peak travel times or public holidays.*Busiest/quietest day to travel is based on Expedia flight demand through January to December 2024.
What is the best time to fly from Portland Intl. Airport (PDX) to Chiang Mai Intl. Airport (CNX)?
To touch down at Chiang Mai Intl. Airport (CNX) without delays, opt for a flight that leaves Portland Intl. Airport (PDX) before 3 PM. The likelihood of cancellations is 22% higher, on average, for departures after this hour.**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 Portland Intl. Airport (PDX) to Chiang Mai Intl. Airport (CNX) last-minute?
Booking your flight from PDX to CNX right before your getaway is typically more expensive. But if there's some wiggle room with your schedule, you could snag a cheap last-minute fare.
Is it cheaper to book a PDX to CNX flight and hotel package?
You'll typically save money by securing a PDX to CNX flight and hotel package compared to booking separately. In fact, you could save hundreds of dollars by bundling with Expedia. And it's simple to manage it all in one convenient place. Once you've selected your ideal accommodations and flights, consider adding extras such as car rentals, tours and activities.
Can I cancel or change the date of my flight from Portland Intl. Airport (PDX) to Chiang Mai Intl. Airport (CNX)?
Typically, you can reschedule or cancel your PDX to CNX flight. However, there may be additional charges, especially if you made your booking more than 24 hours ago. Check your itinerary for the airline's policies and fees on flight changes, or if you want further information, head to our Customer Service portal.

Travel information

Origin airport
Portland Intl.
Destination airport
Chiang Mai Intl.
Airlines serving
Air Canada, British Airways, China Eastern Airlines, Delta, KLM, Korean Air, Malaysia Airlines, STARLUX Airlines
Roundtrip price
$868
Distance
7283 mi

Book with confidence

Portland to Chiang Mai Flights

The cheapest times to fly from Portland to Chiang Mai

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

 

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

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

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 Portland to Chiang Mai in 2025. You can also book with separate airlines for your outbound and return journeys, from $480 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 Portland to Chiang Mai 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 Portland to Chiang Mai 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.

 

Portland to Chiang Mai Flights

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*Available to One Key members.