In terms of precipitation, rainfall in Portland ranges from 0.7 - 5.6 inches per month. November is typically the wettest month, when rainfall can reach 5.6 in. July is typically the driest time to visit Portland when rainfall is around 0.7 in.

If weather is an important factor for your trip to Portland, use this chart to help with planning. For those seeking warmer temperatures, July is the ideal time of year to visit, when temperatures reach an average of 69.8 F. Travelers looking to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 41.0 F).

What is the cheapest time of day to fly from CNX to PDX?

Regardless of the time of day you decide to fly, the ticket price will remain around the same. Book flights from Chiang Mai to Portland as you normally would.

Most accurate provider : When it comes to deals on Chiang Mai-Portland flights, users find the pricing of FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on Chiang Mai-Portland flight deals on Cheapflights vs. FlightHub >95% of the time. Price accuracy is based on data collected from Chiang Mai-Portland flight searches over the past month and is updated monthly.

Most trusted provider : When it comes to deals on Chiang Mai-Portland flights, Cheapflights users trust FlightHub the most. FlightHub 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 Chiang Mai-Portland flight deals. Provider user feedback score is based on Cheapflights searches over the past month and is updated monthly.

Can I find deals for flights from Chiang Mai to Portland that include hotel bookings?

Yes. In addition to deals on Chiang Mai to Portland flights, Cheapflights offers vacation packages that include both flights and hotel.

How can I find direct flights from Chiang Mai to Portland?

After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Chiang Mai to Portland.

Can I find deals for business class flights from Chiang Mai to Portland?

Yes. Cheapflights offers flight deals from Chiang Mai to Portland by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

$526+ Flights from Chiang Mai to Portland

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1. Tell us where you want to go

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Cheap flight deals from Chiang Mai to Portland

Cheapest flights from Chiang Mai to Portland
Explore the most affordable flight options available from Chiang Mai to Portland. Find the lowest fares from popular airlines and budget airlines, with prices last updated on January 21, 2026.

Fri 3/611:50 am

CNX

PDX

2 stops23h 44m

Multiple Airlines

Fri 3/135:50 pm

PDX

CNX

2 stops26h 45m

Multiple Airlines

Deal found 1/20

$900

Wed 9/232:55 pm

CNX

PDX

2 stops39h 15m

China Eastern

Sun 9/276:30 am

PDX

CNX

2 stops40h 55m

China Eastern

Deal found 1/19

$2,682

Best flights from Chiang Mai to Portland
Discover carefully curated flight deals from Chiang Mai to Portland that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated January 21, 2026.

Fri 3/611:50 am

CNX

PDX

2 stops23h 44m

Multiple Airlines

Fri 3/135:50 pm

PDX

CNX

2 stops26h 45m

Multiple Airlines

Deal found 1/20

$900

One-way flights from Chiang Mai to Portland
Search for one-way flight options from Chiang Mai to Portland. Find affordable one-way fares based on user searches. Data last updated January 21, 2026.

Sat 5/911:20 am

CNX

PDX

2 stops25h 33m

Multiple Airlines

Deal found 1/20

$526

Sun 5/310:05 pm

CNX

PDX

3 stops49h 25m

Multiple Airlines

Deal found 1/20

$539

Sat 5/211:20 am

CNX

PDX

2 stops36h 18m

Multiple Airlines

Deal found 1/20

$540

Fri 5/810:05 pm

CNX

PDX

3 stops38h 08m

Multiple Airlines

Deal found 1/20

$550

Mon 5/410:05 pm

CNX

PDX

3 stops49h 25m

Multiple Airlines

Deal found 1/20

$570

Tue 5/59:20 am

CNX

PDX

3 stops38h 10m

Multiple Airlines

Deal found 1/20

$574

Tue 5/127:30 pm

CNX

PDX

3 stops35h 20m

Multiple Airlines

Deal found 1/20

$582

Thu 5/711:55 pm

CNX

PDX

2 stops36h 18m

Multiple Airlines

Deal found 1/20

$600

Thu 4/307:45 pm

CNX

PDX

3 stops41h 08m

Multiple Airlines

Deal found 1/20

$602

Wed 5/66:35 am

CNX

PDX

3 stops30h 18m

Multiple Airlines

Deal found 1/20

$605

Find flight deals from Chiang Mai to Portland

Most accurate provider	FlightHub 3 stars
Most trusted provider	FlightHub 1 star
Round-trip from	$900 (SmartFares)
One-way from	$526 (China Airlines)

Provider with most accurate pricing for Chiang Mai-Portland flight deals.

Search Deals

Provider most trusted by Cheapflights users for Chiang Mai-Portland flights.

Search Deals

From Chiang Mai to Portland

Search Deals

One-way flight from Chiang Mai to Portland

Search Deals

Cheapflights Fare Finder

Use the filters below to find and compare flights from Chiang Mai to Portland that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Chiang MaiPortland

CNX - PDX

CNXPDX

Chiang Mai

Fri 3/6

11:50 am-8:34 pm

2 stops23h 44m

Portland

Fri 3/13

5:50 pm-10:35 am

2 stops26h 45m

$900

Chiang MaiPortland

CNX - PDX

CNXPDX

Chiang Mai

Sat 5/9

11:20 am-10:53 pm

2 stops25h 33m

$526

Chiang MaiPortland

CNX - PDX

CNXPDX

Chiang Mai

Sun 5/3

10:05 pm-9:30 am

3 stops49h 25m

$539

Chiang MaiPortland

CNX - PDX

CNXPDX

Chiang Mai

Sat 5/2

11:20 am-9:38 am

2 stops36h 18m

$540

Chiang MaiPortland

CNX - PDX

CNXPDX

Chiang Mai

Fri 5/8

10:05 pm-10:13 pm

3 stops38h 08m

$550

Chiang MaiPortland

CNX - PDX

CNXPDX

Chiang Mai

Mon 5/4

10:05 pm-9:30 am

3 stops49h 25m

$570

Chiang MaiPortland

CNX - PDX

CNXPDX

Chiang Mai

Tue 5/12

7:30 pm-4:50 pm

3 stops35h 20m

$582

Chiang MaiPortland

CNX - PDX

CNXPDX

Chiang Mai

Thu 5/7

11:55 pm-10:13 pm

2 stops36h 18m

$600

Chiang MaiPortland

CNX - PDX

CNXPDX

Chiang Mai

Thu 4/30

7:45 pm-10:53 pm

3 stops41h 08m

$602

Chiang MaiPortland

CNX - PDX

CNXPDX

Chiang Mai

Wed 5/6

6:35 am-10:53 pm

3 stops30h 18m

$605

Flights are sorted by cheapest round-trip flights first.

Deals found on 1/20

Showing 1-10 of 11 results

Most accurate provider: When it comes to deals on Chiang Mai-Portland flights, users find the pricing of FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on Chiang Mai-Portland flight deals on Cheapflights vs. FlightHub >95% of the time. Price accuracy is based on data collected from Chiang Mai-Portland flight searches over the past month and is updated monthly.
Most trusted provider: When it comes to deals on Chiang Mai-Portland flights, Cheapflights users trust FlightHub the most. FlightHub 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 Chiang Mai-Portland 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 Chiang Mai to Portland

Have a flexible travel schedule? Discover the best time to fly to Portland from Chiang Mai 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.

Related info for your journey

Can I find deals for flights from Chiang Mai to Portland that include hotel bookings?
Yes. In addition to deals on Chiang Mai to Portland flights, Cheapflights offers vacation packages that include both flights and hotel.
How can I find direct flights from Chiang Mai to Portland?
After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Chiang Mai to Portland.
Can I find deals for business class flights from Chiang Mai to Portland?
Yes. Cheapflights offers flight deals from Chiang Mai to Portland by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

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$526+ Cheap flights from Chiang Mai (CNX) to Portland (PDX)

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 5/9. Fares are subject to change and may not be available on all flights or dates of travel.

Find cheap flights from Chiang Mai to Portland with Cheapflights

1. Tell us where you want to go

2. Select your favorite providers

3. Compare prices and book

Cheap flight deals from Chiang Mai to Portland

Cheapest flights from Chiang Mai to PortlandExplore the most affordable flight options available from Chiang Mai to Portland. Find the lowest fares from popular airlines and budget airlines, with prices last updated on January 21, 2026.

Explore the most affordable flight options available from Chiang Mai to Portland. Find the lowest fares from popular airlines and budget airlines, with prices last updated on January 21, 2026.

Find flight deals from Chiang Mai to Portland

Most accurate provider

Most trusted provider

Round-trip from

One-way from

Cheapflights Fare Finder

Use the filters below to find and compare flights from Chiang Mai to Portland that are best for you.

Best time to book a flight from Chiang Mai to Portland

Have a flexible travel schedule? Discover the best time to fly to Portland from Chiang Mai with our price prediction graph.

Related info for your journey

Find useful and relevant information for your journey from Chiang Mai to Portland. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

Can I find deals for flights from Chiang Mai to Portland that include hotel bookings?

How can I find direct flights from Chiang Mai to Portland?

Can I find deals for business class flights from Chiang Mai to Portland?

Traveling to a place near Portland?

Browse thousands of different options on Cheapflights for your next trip

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Alternative routes for Chiang Mai to Portland

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Cheapest flights from Chiang Mai to Portland
Explore the most affordable flight options available from Chiang Mai to Portland. Find the lowest fares from popular airlines and budget airlines, with prices last updated on January 21, 2026.