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Cheap flights from Portland to Chiang Mai from $438

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Portland to Chiang Mai departing on 1/19. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
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Find the cheapest flights from Portland to Chiang Mai

Cheap round-trip flights

Enter your travel dates to find the best prices.
China Airlines Logo
5:51 pm - 10:25 amPDX-CNX
25h 34m2 stops
China Airlines Logo
5:35 pm - 9:42 amCNX-PDX
31h 07m2 stops
$817China Airlines
Find Deal
Mon, Jan 12 - Mon, Feb 16
China Airlines Logo
4:51 pm - 10:25 amPDX-CNX
26h 34m2 stops
China Airlines Logo
11:25 am - 1:34 pmCNX-PDX
41h 09m2 stops
$833China Airlines
Find Deal
Thu, Jan 15 - Wed, Feb 25
China Airlines Logo
4:51 pm - 10:25 amPDX-CNX
26h 34m2 stops
China Airlines Logo
11:25 am - 11:32 pmCNX-PDX
27h 07m2 stops
$854China Airlines
Find Deal
Wed, Jan 7 - Wed, Feb 11
China Airlines Logo
5:51 pm - 10:25 amPDX-CNX
25h 34m2 stops
China Airlines Logo
5:35 pm - 10:56 amCNX-PDX
32h 21m2 stops
$860China Airlines
Find Deal
Mon, Jan 12 - Mon, Feb 16
China Airlines Logo
10:33 am - 10:25 amPDX-CNX
32h 52m2 stops
China Airlines Logo
11:25 am - 8:34 pmCNX-PDX
48h 09m2 stops
$872China Airlines
Find Deal
Thu, Jan 15 - Fri, Jan 30
China Airlines Logo
4:51 pm - 10:25 amPDX-CNX
26h 34m2 stops
China Airlines Logo
11:25 am - 4:50 pmCNX-PDX
44h 25m2 stops
$876China Airlines
Find Deal
Thu, Jan 15 - Wed, Feb 25
China Airlines Logo
5:55 pm - 10:20 amPDX-CNX
26h 25m2 stops
China Airlines Logo
11:20 am - 9:32 amCNX-PDX
36h 12m2 stops
$881China Airlines
Find Deal
Fri, Apr 3 - Fri, Apr 17
Korean Air Logo
6:25 am - 10:55 pmPDX-CNX
25h 30m2 stops
Korean Air Logo
12:15 am - 12:44 pmCNX-PDX
27h 29m2 stops
$934Korean Air
Find Deal
Thu, Jan 22 - Sun, Feb 1
EVA Air Logo
5:51 pm - 10:35 amPDX-CNX
25h 44m2 stops
EVA Air Logo
11:50 am - 11:32 pmCNX-PDX
26h 42m2 stops
$943EVA Air
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Thu, Jan 22 - Mon, Feb 2
Korean Air Logo
7:15 am - 10:55 pmPDX-CNX
24h 40m2 stops
Korean Air Logo
12:15 am - 4:14 pmCNX-PDX
30h 59m2 stops
$974Korean Air
Find Deal
Mon, Dec 1 - Sat, Feb 21

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
Feb 16
CNX5:35 pmChiang Mai
34h 59m
2 stops
PDX1:34 pmPortland
$817
Find similar
China Airlines
Jan 15
PDX4:51 pmPortland
26h 34m
2 stops
CNX10:25 amChiang Mai
Feb 25
CNX11:25 amChiang Mai
48h 09m
2 stops
PDX8:34 pmPortland
$833
Find similar
China Airlines
Jan 7
PDX4:51 pmPortland
26h 34m
2 stops
CNX10:25 amChiang Mai
Feb 11
CNX11:25 amChiang Mai
27h 07m
2 stops
PDX11:32 pmPortland
$854
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 22
PDX2:30 pmPortland
29h 05m
2 stops
CNX10:35 amChiang Mai
Feb 2
CNX11:50 amChiang Mai
26h 42m
2 stops
PDX11:32 pmPortland
$911
Find similar
EVA Air
Jan 22
PDX5:51 pmPortland
25h 44m
2 stops
CNX10:35 amChiang Mai
Feb 2
CNX11:50 amChiang Mai
26h 42m
2 stops
PDX11:32 pmPortland
$943
Find similar
EVA Air
Jan 1
PDX1:51 pmPortland
29h 44m
2 stops
CNX10:35 amChiang Mai
Jan 22
CNX11:50 amChiang Mai
26h 42m
2 stops
PDX11:32 pmPortland
$1,027
Find similar

momondo Fare Finder

 
Customize your flight search to find flights from Portland to Chiang Mai that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, momondo users made 832,500 searches. Data last updated November 13, 2025.
Use the filters below to find and compare flights from Portland to Chiang Mai that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

PortlandChiang Mai

PDX - CNX

PDXCNX

Portland

Mon 1/12

5:51 pm-10:25 am

2 stops25h 34m

Chiang Mai

Mon 2/16

5:35 pm-9:42 am

2 stops31h 07m

$817

PortlandChiang Mai

PDX - CNX

PDXCNX

Portland

Thu 1/15

4:51 pm-10:25 am

2 stops26h 34m

Chiang Mai

Wed 2/25

11:25 am-1:34 pm

2 stops41h 09m

$833

PortlandChiang Mai

PDX - CNX

PDXCNX

Portland

Wed 1/7

4:51 pm-10:25 am

2 stops26h 34m

Chiang Mai

Wed 2/11

11:25 am-11:32 pm

2 stops27h 07m

$854

PortlandChiang Mai

PDX - CNX

PDXCNX

Portland

Mon 1/12

5:51 pm-10:25 am

2 stops25h 34m

Chiang Mai

Mon 2/16

5:35 pm-10:56 am

2 stops32h 21m

$860

PortlandChiang Mai

PDX - CNX

PDXCNX

Portland

Thu 1/15

10:33 am-10:25 am

2 stops32h 52m

Chiang Mai

Fri 1/30

11:25 am-8:34 pm

2 stops48h 09m

$872

PortlandChiang Mai

PDX - CNX

PDXCNX

Portland

Thu 1/15

4:51 pm-10:25 am

2 stops26h 34m

Chiang Mai

Wed 2/25

11:25 am-4:50 pm

2 stops44h 25m

$876

PortlandChiang Mai

PDX - CNX

PDXCNX

Portland

Fri 4/3

5:55 pm-10:20 am

2 stops26h 25m

Chiang Mai

Fri 4/17

11:20 am-9:32 am

2 stops36h 12m

$881

PortlandChiang Mai

PDX - CNX

PDXCNX

Portland

Thu 1/22

6:25 am-10:55 pm

2 stops25h 30m

Chiang Mai

Sun 2/1

12:15 am-12:44 pm

2 stops27h 29m

$934

PortlandChiang Mai

PDX - CNX

PDXCNX

Portland

Thu 1/22

5:51 pm-10:35 am

2 stops25h 44m

Chiang Mai

Mon 2/2

11:50 am-11:32 pm

2 stops26h 42m

$943

PortlandChiang Mai

PDX - CNX

PDXCNX

Portland

Mon 12/1

7:15 am-10:55 pm

2 stops24h 40m

Chiang Mai

Sat 2/21

12:15 am-4:14 pm

2 stops30h 59m

$974

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first
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See travel insights to Chiang Mai from

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

What is the typical price of a round-trip flight between Portland and Chiang Mai?

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

Direct flights

None
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 23h 25m.

  • 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?

  • 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?

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 AirPriceFrom $975Free CancellationRating
8.4
1,275 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.

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