What is the cheapest airline that flies from Portland to Chiang Mai?

Korean Air is the most popular carrier operating from Portland to Chiang Mai

When did momondo last update prices for flights from Portland Airport to Chiang Mai Airport?

Prices for flights from Portland Airport to Chiang Mai Airport refresh daily.

How many operators does momondo search for flights from Portland Airport to Chiang Mai Airport?

There is 1 operator available for flights from Portland Airport to Chiang Mai Airport as of December 2025.

How old do you have to be to fly from Portland Airport to Chiang Mai Airport?

Although the minimum age for a child to fly alone is five, airlines that offer an unaccompanied minor (UMNR) service may have their own age limits, which could be impacted by factors such as flight length, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from Portland Airport to Chiang Mai Airport.

What documentation or ID do you need to fly to Chiang Mai Airport?

The travel and health documents you'll need for your trip to Chiang Mai Airport may differ based on your itinerary and personal situation. Typically, you should have several documents on hand, such as a national ID card or driver's license and a passport that is valid for six months after your intended arrival at Chiang Mai Airport. It is always advisable to seek advice from your airline or a trusted third party, such as IATA.

$468 Cheap Flights from Portland to Chiang Mai in 2025/26

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Find the cheapest flights from Portland to Chiang Mai

Round-trip

One-way

Cheap round-trip flights

Enter your travel dates to find the best prices.

1:35 pm - 10:20 am

PDX

CNX

30h 45m2 stops

11:20 am - 9:30 am

CNX

PDX

36h 10m2 stops

$872Multiple Airlines

Mon, Apr 20 - Thu, Apr 30

7:24 am - 2:20 pm

PDX

CNX

39h 56m2 stops

3:35 pm - 4:25 pm

CNX

PDX

39h 50m2 stops

$914Multiple Airlines

Thu, Jan 22 - Mon, Feb 2

10:33 am - 10:25 am

PDX

CNX

32h 52m2 stops

11:25 am - 10:46 pm

CNX

PDX

26h 21m2 stops

$922China Airlines

Mon, Jan 12 - Tue, Jan 20

4:51 pm - 10:25 am

PDX

CNX

26h 34m2 stops

5:35 pm - 11:44 pm

CNX

PDX

21h 09m2 stops

$963Multiple Airlines

Mon, Jan 12 - Mon, Feb 16

7:05 am - 9:20 am

PDX

CNX

36h 15m3 stops

11:35 am - 7:55 pm

CNX

PDX

22h 20m2 stops

$964Multiple Airlines

Mon, Apr 20 - Thu, Apr 30

5:45 pm - 10:25 am

PDX

CNX

26h 40m2 stops

11:35 am - 10:53 pm

CNX

PDX

25h 18m2 stops

$977Multiple Airlines

Tue, Apr 21 - Wed, Apr 29

7:15 am - 10:55 pm

PDX

CNX

24h 40m2 stops

12:15 am - 4:43 pm

CNX

PDX

30h 28m2 stops

$980Korean Air

Thu, Mar 5 - Sun, Mar 8

2:47 pm - 10:35 am

PDX

CNX

28h 48m2 stops

11:50 am - 9:41 pm

CNX

PDX

24h 51m2 stops

$993EVA Air

Thu, Feb 26 - Sun, Mar 8

7:05 am - 9:20 am

PDX

CNX

36h 15m3 stops

11:55 am - 9:31 am

CNX

PDX

35h 36m3 stops

$1,013Multiple Airlines

Mon, Apr 20 - Thu, Apr 30

5:45 pm - 10:25 am

PDX

CNX

26h 40m2 stops

11:35 am - 10:13 pm

CNX

PDX

24h 38m2 stops

$1,015Multiple Airlines

Sun, Apr 19 - Fri, May 1

EVA Air flights from Portland to Chiang Mai

Our best EVA Air deals on Portland to Chiang Mai flight tickets

EVA Air

Feb 26

PDX2:47 pmPortland

28h 48m

2 stops

CNX10:35 amChiang Mai

Mar 8

CNX11:50 amChiang Mai

24h 51m

2 stops

PDX9:41 pmPortland

$993

Find similar

EVA Air

Jan 7

PDX5:35 pmPortland

26h 00m

2 stops

CNX10:35 amChiang Mai

Feb 11

CNX11:50 amChiang Mai

37h 56m

2 stops

PDX10:46 amPortland

$1,150

Find similar

EVA Air

Jan 12

PDX5:35 amPortland

36h 50m

3 stops

CNX9:25 amChiang Mai

Jan 20

CNX9:40 pmChiang Mai

32h 08m

3 stops

PDX2:48 pmPortland

$1,242

Find similar

China Airlines flights from Portland to Chiang Mai

Our best China Airlines deals on Portland to Chiang Mai flight tickets

China Airlines

Jan 12

PDX10:33 amPortland

32h 52m

2 stops

CNX10:25 amChiang Mai

Jan 20

CNX11:25 amChiang Mai

26h 21m

2 stops

PDX10:46 pmPortland

$922

Find similar

China Airlines

Jan 7

PDX5:51 pmPortland

25h 34m

2 stops

CNX10:25 amChiang Mai

Feb 11

CNX11:25 amChiang Mai

37h 17m

2 stops

PDX9:42 amPortland

$1,155

Find similar

Fly from

Fly to

Route

Depart

Return

Price

PortlandChiang Mai

PDX - CNX

PDXCNX

Portland

Mon 4/20

1:35 pm-10:20 am

2 stops30h 45m

Chiang Mai

Thu 4/30

11:20 am-9:30 am

2 stops36h 10m

$872

PortlandChiang Mai

PDX - CNX

PDXCNX

Portland

Thu 1/22

7:24 am-2:20 pm

2 stops39h 56m

Chiang Mai

Mon 2/2

3:35 pm-4:25 pm

2 stops39h 50m

$914

PortlandChiang Mai

PDX - CNX

PDXCNX

Portland

Mon 1/12

10:33 am-10:25 am

2 stops32h 52m

Chiang Mai

Tue 1/20

11:25 am-10:46 pm

2 stops26h 21m

$922

PortlandChiang Mai

PDX - CNX

PDXCNX

Portland

Mon 1/12

4:51 pm-10:25 am

2 stops26h 34m

Chiang Mai

Mon 2/16

5:35 pm-11:44 pm

2 stops21h 09m

$963

PortlandChiang Mai

PDX - CNX

PDXCNX

Portland

Mon 4/20

7:05 am-9:20 am

3 stops36h 15m

Chiang Mai

Thu 4/30

11:35 am-7:55 pm

2 stops22h 20m

$964

PortlandChiang Mai

PDX - CNX

PDXCNX

Portland

Tue 4/21

5:45 pm-10:25 am

2 stops26h 40m

Chiang Mai

Wed 4/29

11:35 am-10:53 pm

2 stops25h 18m

$977

PortlandChiang Mai

PDX - CNX

PDXCNX

Portland

Thu 3/5

7:15 am-10:55 pm

2 stops24h 40m

Chiang Mai

Sun 3/8

12:15 am-4:43 pm

2 stops30h 28m

$980

PortlandChiang Mai

PDX - CNX

PDXCNX

Portland

Thu 2/26

2:47 pm-10:35 am

2 stops28h 48m

Chiang Mai

Sun 3/8

11:50 am-9:41 pm

2 stops24h 51m

$993

PortlandChiang Mai

PDX - CNX

PDXCNX

Portland

Mon 4/20

7:05 am-9:20 am

3 stops36h 15m

Chiang Mai

Thu 4/30

11:55 am-9:31 am

3 stops35h 36m

$1,013

PortlandChiang Mai

PDX - CNX

PDXCNX

Portland

Sun 4/19

5:45 pm-10:25 am

2 stops26h 40m

Chiang Mai

Fri 5/1

11:35 am-10:13 pm

2 stops24h 38m

$1,015

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 18 resultsSorted by cheapest first

How to get the cheapest flight ticket from Portland to Chiang Mai

Look no further. We've gone through all the searches for this route on momondo so you have the important information and insights to find the cheapest flight ticket for your trip

Prices

Airlines

What is the cheapest day to depart on your flight to Chiang Mai?

The cheapest day to depart from Portland to Chiang Mai is on a Wednesday. Travelers who choose to depart for Chiang Mai on a Wednesday will often find tickets for as low as $1,172. When flying out on a Tuesday, the most expensive travel day of the week, you can expect to see flight prices from Portland to Chiang Mai for around $1,526.

What is the cheapest time of day to depart on your flight to Chiang Mai?

Flying to Chiang Mai from Portland in the morning is the least expensive time of day to depart. momondo users have found prices as low as $1,172 when looking at flights departing in the morning. Flights to Chiang Mai are more costly at noon, with an average ticket price of $1,991. Departure times at noon fall within the peak daily travel times, which is why tickets can be more expensive.

When to book flights from Portland to Chiang Mai

Are you open to changing your travel dates? Check out the ideal times to fly from Portland to Chiang Mai according to our flight data. Find out which month and days have the cheapest flights.

Estimated round-trip price

Cheap Portland to Chiang Mai (PDX to CNX) flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from Portland to Chiang Mai

Fastest flight time	25h 00m
Direct flights	None

The fastest flight from Portland to Chiang Mai takes 25h 00m

There are no direct flights from Portland to Chiang Mai. There are no popular flight routes from Portland to Chiang Mai.

Search flight deals

How far is Portland to Chiang Mai by plane?
Chiang Mai is 7278.1 mi away from Portland. A reasonable flight in good conditions will take 25h 00m.
When did momondo last update prices for flights from Portland Airport to Chiang Mai Airport?
Prices for flights from Portland Airport to Chiang Mai Airport refresh daily.
How many operators does momondo search for flights from Portland Airport to Chiang Mai Airport?
There is 1 operator available for flights from Portland Airport to Chiang Mai Airport as of December 2025.
How old do you have to be to fly from Portland Airport to Chiang Mai Airport?
Although the minimum age for a child to fly alone is five, airlines that offer an unaccompanied minor (UMNR) service may have their own age limits, which could be impacted by factors such as flight length, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from Portland Airport to Chiang Mai Airport.
What documentation or ID do you need to fly to Chiang Mai Airport?
The travel and health documents you'll need for your trip to Chiang Mai Airport may differ based on your itinerary and personal situation. Typically, you should have several documents on hand, such as a national ID card or driver's license and a passport that is valid for six months after your intended arrival at Chiang Mai Airport. It is always advisable to seek advice from your airline or a trusted third party, such as IATA.
What is the most popular airline from Portland to Chiang Mai?
momondo data reveals that the most frequently booked airline on the route from Portland to Chiang Mai is EVA Air, representing 100% of all bookings.

Best airlines flying from Portland to Chiang Mai

Compare and see reviews for airlines that fly from Portland to Chiang Mai with momondo

Airline	Rating	Free Cancellation	Price
EVA Air	PriceFrom $963	Free Cancellation	Rating 8.4 1,298 reviews		Search EVA Air flights

Why use momondo?

Why should I use momondo to find a flight deal from Portland to Chiang Mai?

It is quick and easy to find Portland to Chiang Mai flights on momondo. We search and return numerous flight options from various airlines and agents. You can then use our filters to narrow your search until you have found the most convenient flight to Chiang Mai that suits you.

Can I find flights from Portland to Chiang Mai with flexible booking policies on momondo?

Flights from Portland to Chiang Mai with flexible booking policies can be found by using the search form above and then selecting our dedicated flexible booking filter, which will highlight only the flights where this policy is applied.

How can momondo help me find flights from Portland to Chiang Mai?

Once all potential Portland to Chiang Mai flight options are in front of you, momondo lets you sort and filter flights based on preferences such as airline, price and flight times amongst many other options.

I’m not ready to book a flight from Portland to Chiang Mai right now. Can momondo alert me if prices change?

Of course. momondo tracks the price of Portland to Chiang Mai flights. All you need is a valid email address and we will do the rest; it is that quick and easy.