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

China Eastern 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.

$559 Cheap Flights from Portland to Chiang Mai in 2025/26

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Find the cheapest flights from Portland to Chiang Mai

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4:51 pm - 10:25 am

PDX

CNX

26h 34m2 stops

5:35 pm - 4:50 pm

CNX

PDX

38h 15m2 stops

$855China Airlines

lun., ene. 12 - lun., feb. 16

9:30 pm - 10:25 am

PDX

CNX

45h 55m2 stops

11:25 am - 10:56 am

CNX

PDX

38h 31m2 stops

$858China Airlines

jue., ene. 15 - mié., feb. 25

7:10 am - 10:55 pm

PDX

CNX

24h 45m2 stops

12:15 am - 6:49 pm

CNX

PDX

33h 34m2 stops

$862Korean Air

lun., feb. 2 - dom., feb. 22

7:20 am - 2:20 pm

PDX

CNX

40h 00m2 stops

11:20 pm - 4:49 pm

CNX

PDX

32h 29m2 stops

$866Multiple Airlines

jue., ene. 22 - lun., feb. 2

5:40 pm - 10:55 pm

PDX

CNX

39h 15m2 stops

12:15 am - 10:23 pm

CNX

PDX

36h 08m2 stops

$869Korean Air

dom., mar. 15 - mié., mar. 18

7:20 am - 9:05 am

PDX

CNX

34h 45m3 stops

11:20 pm - 4:49 pm

CNX

PDX

32h 29m2 stops

$873Multiple Airlines

jue., ene. 22 - lun., feb. 2

9:30 pm - 10:25 am

PDX

CNX

45h 55m2 stops

11:25 am - 9:42 am

CNX

PDX

37h 17m2 stops

$889China Airlines

jue., ene. 15 - mié., feb. 25

5:50 pm - 10:25 am

PDX

CNX

25h 35m2 stops

11:25 am - 9:49 am

CNX

PDX

36h 24m2 stops

$890Multiple Airlines

mié., feb. 18 - mar., mar. 24

7:20 am - 2:20 pm

PDX

CNX

40h 00m2 stops

11:20 pm - 4:49 pm

CNX

PDX

32h 29m2 stops

$894Multiple Airlines

jue., ene. 22 - lun., feb. 2

7:20 am - 9:05 am

PDX

CNX

34h 45m3 stops

11:20 pm - 4:49 pm

CNX

PDX

32h 29m2 stops

$901Multiple Airlines

jue., ene. 22 - lun., feb. 2

China Airlines flights from Portland to Chiang Mai

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

China Airlines

Jan 12

PDX4:51 pmPortland

26h 34m

2 stops

CNX10:25 amChiang Mai

Feb 16

CNX5:35 pmChiang Mai

38h 15m

2 stops

PDX4:50 pmPortland

$855

Find similar

China Airlines

Jan 15

PDX9:30 pmPortland

45h 55m

2 stops

CNX10:25 amChiang Mai

Feb 25

CNX11:25 amChiang Mai

38h 31m

2 stops

PDX10:56 amPortland

$858

Find similar

China Airlines

Jan 15

PDX9:30 pmPortland

45h 55m

2 stops

CNX10:25 amChiang Mai

Feb 25

CNX11:25 amChiang Mai

37h 17m

2 stops

PDX9:42 amPortland

$889

Find similar

Korean Air flights from Portland to Chiang Mai

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

Korean Air

Feb 2

PDX7:10 amPortland

24h 45m

2 stops

CNX10:55 pmChiang Mai

Feb 22

CNX12:15 amChiang Mai

33h 34m

2 stops

PDX6:49 pmPortland

$862

Find similar

Korean Air

Mar 15

PDX5:40 pmPortland

39h 15m

2 stops

CNX10:55 pmChiang Mai

Mar 18

CNX12:15 amChiang Mai

36h 08m

2 stops

PDX10:23 pmPortland

$869

Find similar

Fly from

Fly to

Route

Depart

Return

Price

PortlandChiang Mai

PDX - CNX

PDXCNX

Portland

lun. 1/12

4:51 pm-10:25 am

2 stops26h 34m

Chiang Mai

lun. 2/16

5:35 pm-4:50 pm

2 stops38h 15m

$855

PortlandChiang Mai

PDX - CNX

PDXCNX

Portland

jue. 1/15

9:30 pm-10:25 am

2 stops45h 55m

Chiang Mai

mié. 2/25

11:25 am-10:56 am

2 stops38h 31m

$858

PortlandChiang Mai

PDX - CNX

PDXCNX

Portland

lun. 2/2

7:10 am-10:55 pm

2 stops24h 45m

Chiang Mai

dom. 2/22

12:15 am-6:49 pm

2 stops33h 34m

$862

PortlandChiang Mai

PDX - CNX

PDXCNX

Portland

jue. 1/22

7:20 am-2:20 pm

2 stops40h 00m

Chiang Mai

lun. 2/2

11:20 pm-4:49 pm

2 stops32h 29m

$866

PortlandChiang Mai

PDX - CNX

PDXCNX

Portland

dom. 3/15

5:40 pm-10:55 pm

2 stops39h 15m

Chiang Mai

mié. 3/18

12:15 am-10:23 pm

2 stops36h 08m

$869

PortlandChiang Mai

PDX - CNX

PDXCNX

Portland

jue. 1/22

7:20 am-9:05 am

3 stops34h 45m

Chiang Mai

lun. 2/2

11:20 pm-4:49 pm

2 stops32h 29m

$873

PortlandChiang Mai

PDX - CNX

PDXCNX

Portland

jue. 1/15

9:30 pm-10:25 am

2 stops45h 55m

Chiang Mai

mié. 2/25

11:25 am-9:42 am

2 stops37h 17m

$889

PortlandChiang Mai

PDX - CNX

PDXCNX

Portland

mié. 2/18

5:50 pm-10:25 am

2 stops25h 35m

Chiang Mai

mar. 3/24

11:25 am-9:49 am

2 stops36h 24m

$890

PortlandChiang Mai

PDX - CNX

PDXCNX

Portland

jue. 1/22

7:20 am-2:20 pm

2 stops40h 00m

Chiang Mai

lun. 2/2

11:20 pm-4:49 pm

2 stops32h 29m

$894

PortlandChiang Mai

PDX - CNX

PDXCNX

Portland

jue. 1/22

7:20 am-9:05 am

3 stops34h 45m

Chiang Mai

lun. 2/2

11:20 pm-4:49 pm

2 stops32h 29m

$901

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 22h 55m.
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 1,292 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.