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

EVA 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.

$443 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

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7:58 pm - 10:55 pm

PDX

CNX

36h 57m2 stops

12:15 am - 4:43 pm

CNX

PDX

30h 28m2 stops

$869Korean Air

Sun, Mar 15 - Wed, Mar 18

5:35 pm - 10:25 am

PDX

CNX

25h 50m2 stops

11:25 am - 10:46 pm

CNX

PDX

26h 21m2 stops

$898Multiple Airlines

Sun, Jan 18 - Thu, Jan 29

6:25 am - 10:55 pm

PDX

CNX

25h 30m2 stops

12:15 am - 9:23 pm

CNX

PDX

36h 08m2 stops

$902Korean Air

Thu, Feb 26 - Sat, Mar 7

5:35 pm - 10:25 am

PDX

CNX

25h 50m2 stops

5:35 pm - 10:56 am

CNX

PDX

32h 21m2 stops

$919China Airlines

Mon, Jan 12 - Mon, Feb 16

7:10 am - 10:55 pm

PDX

CNX

24h 45m2 stops

12:15 am - 4:43 pm

CNX

PDX

30h 28m2 stops

$942Korean Air

Sat, Feb 28 - Fri, Mar 13

9:30 pm - 10:25 am

PDX

CNX

45h 55m2 stops

11:25 am - 9:42 am

CNX

PDX

37h 17m2 stops

$952China Airlines

Thu, Jan 15 - Wed, Feb 25

1:38 pm - 10:35 am

PDX

CNX

29h 57m2 stops

11:50 am - 10:56 am

CNX

PDX

38h 06m2 stops

$961EVA Air

Thu, Jan 15 - Wed, Feb 25

9:30 pm - 10:35 am

PDX

CNX

46h 05m2 stops

11:50 am - 11:44 pm

CNX

PDX

26h 54m2 stops

$974EVA Air

Mon, Jan 12 - Mon, Feb 16

2:38 pm - 4:35 pm

PDX

CNX

34h 57m2 stops

11:25 am - 9:35 am

CNX

PDX

37h 10m2 stops

$980Multiple Airlines

Sat, Jan 24 - Sat, Jan 31

5:35 pm - 10:35 am

PDX

CNX

26h 00m2 stops

11:50 am - 10:46 pm

CNX

PDX

25h 56m2 stops

$993EVA Air

Wed, Jan 7 - Wed, Feb 11

China Eastern flights from Portland to Chiang Mai

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

China Eastern

Jan 22

PDX6:25 amPortland

40h 55m

2 stops

CNX2:20 pmChiang Mai

Feb 2

CNX11:20 pmChiang Mai

32h 05m

2 stops

PDX4:25 pmPortland

$1,045

Find similar

China Eastern

Jan 22

PDX6:25 amPortland

40h 55m

2 stops

CNX2:20 pmChiang Mai

Feb 2

CNX4:25 pmChiang Mai

39h 00m

3 stops

PDX4:25 pmPortland

$1,139

Find similar

China Eastern

Jan 22

PDX6:25 amPortland

35h 40m

3 stops

CNX9:05 amChiang Mai

Feb 2

CNX4:25 pmChiang Mai

39h 00m

3 stops

PDX4:25 pmPortland

$1,146

Find similar

EVA Air flights from Portland to Chiang Mai

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

EVA Air

Jan 15

PDX1:38 pmPortland

29h 57m

2 stops

CNX10:35 amChiang Mai

Feb 25

CNX11:50 amChiang Mai

38h 06m

2 stops

PDX10:56 amPortland

$961

Find similar

EVA Air

Jan 12

PDX9:30 pmPortland

46h 05m

2 stops

CNX10:35 amChiang Mai

Feb 16

CNX11:50 amChiang Mai

26h 54m

2 stops

PDX11:44 pmPortland

$974

Find similar

EVA Air

Jan 7

PDX5:35 pmPortland

26h 00m

2 stops

CNX10:35 amChiang Mai

Feb 11

CNX11:50 amChiang Mai

25h 56m

2 stops

PDX10:46 pmPortland

$993

Find similar

Fly from

Fly to

Route

Depart

Return

Price

PortlandChiang Mai

PDX - CNX

PDXCNX

Portland

Sun 3/15

7:58 pm-10:55 pm

2 stops36h 57m

Chiang Mai

Wed 3/18

12:15 am-4:43 pm

2 stops30h 28m

$869

PortlandChiang Mai

PDX - CNX

PDXCNX

Portland

Sun 1/18

5:35 pm-10:25 am

2 stops25h 50m

Chiang Mai

Thu 1/29

11:25 am-10:46 pm

2 stops26h 21m

$898

PortlandChiang Mai

PDX - CNX

PDXCNX

Portland

Thu 2/26

6:25 am-10:55 pm

2 stops25h 30m

Chiang Mai

Sat 3/7

12:15 am-9:23 pm

2 stops36h 08m

$902

PortlandChiang Mai

PDX - CNX

PDXCNX

Portland

Mon 1/12

5:35 pm-10:25 am

2 stops25h 50m

Chiang Mai

Mon 2/16

5:35 pm-10:56 am

2 stops32h 21m

$919

PortlandChiang Mai

PDX - CNX

PDXCNX

Portland

Sat 2/28

7:10 am-10:55 pm

2 stops24h 45m

Chiang Mai

Fri 3/13

12:15 am-4:43 pm

2 stops30h 28m

$942

PortlandChiang Mai

PDX - CNX

PDXCNX

Portland

Thu 1/15

9:30 pm-10:25 am

2 stops45h 55m

Chiang Mai

Wed 2/25

11:25 am-9:42 am

2 stops37h 17m

$952

PortlandChiang Mai

PDX - CNX

PDXCNX

Portland

Thu 1/15

1:38 pm-10:35 am

2 stops29h 57m

Chiang Mai

Wed 2/25

11:50 am-10:56 am

2 stops38h 06m

$961

PortlandChiang Mai

PDX - CNX

PDXCNX

Portland

Mon 1/12

9:30 pm-10:35 am

2 stops46h 05m

Chiang Mai

Mon 2/16

11:50 am-11:44 pm

2 stops26h 54m

$974

PortlandChiang Mai

PDX - CNX

PDXCNX

Portland

Sat 1/24

2:38 pm-4:35 pm

2 stops34h 57m

Chiang Mai

Sat 1/31

11:25 am-9:35 am

2 stops37h 10m

$980

PortlandChiang Mai

PDX - CNX

PDXCNX

Portland

Wed 1/7

5:35 pm-10:35 am

2 stops26h 00m

Chiang Mai

Wed 2/11

11:50 am-10:46 pm

2 stops25h 56m

$993

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 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 35m
Direct flights	None

The fastest flight from Portland to Chiang Mai takes 25h 35m

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 35m.
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 1,296 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.