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Cheap flights from Portland to Chiang Mai from $525

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 8/27. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
1 adult
1 adult, Economy, 0 bags

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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.
Multiple Airlines Logo
5:50 pm - 10:20 am
PDX
-
CNX
26h 30m
2 stops
Multiple Airlines Logo
11:20 am - 9:25 am
CNX
-
PDX
36h 05m
2 stops
$900Multiple Airlines
Mon, Aug 31 - Sat, Sep 5
Multiple Airlines Logo
5:50 pm - 10:20 am
PDX
-
CNX
26h 30m
2 stops
Multiple Airlines Logo
11:20 am - 8:57 am
CNX
-
PDX
35h 37m
2 stops
$905Multiple Airlines
Mon, Aug 31 - Sat, Sep 5
Multiple Airlines Logo
1:50 pm - 10:20 am
PDX
-
CNX
30h 30m
2 stops
Multiple Airlines Logo
11:20 am - 8:50 pm
CNX
-
PDX
47h 30m
2 stops
$924Multiple Airlines
Fri, Sep 11 - Sun, Sep 20
China Airlines Logo
7:50 pm - 10:20 am
PDX
-
CNX
24h 30m
2 stops
China Airlines Logo
11:20 am - 9:25 am
CNX
-
PDX
36h 05m
2 stops
$949China Airlines
Fri, Sep 11 - Sun, Sep 20
Multiple Airlines Logo
6:50 pm - 10:20 am
PDX
-
CNX
25h 30m
2 stops
Multiple Airlines Logo
11:20 am - 9:07 am
CNX
-
PDX
35h 47m
2 stops
$957Multiple Airlines
Wed, Aug 26 - Mon, Aug 31
Multiple Airlines Logo
5:50 pm - 10:20 am
PDX
-
CNX
26h 30m
2 stops
Multiple Airlines Logo
11:20 am - 9:25 am
CNX
-
PDX
36h 05m
2 stops
$971Multiple Airlines
Mon, Aug 31 - Sat, Sep 5
Multiple Airlines Logo
10:34 am - 10:20 am
PDX
-
CNX
33h 46m
2 stops
Multiple Airlines Logo
11:20 am - 8:06 am
CNX
-
PDX
34h 46m
2 stops
$982Multiple Airlines
Mon, Aug 31 - Sat, Sep 5
Multiple Airlines Logo
2:55 pm - 10:25 am
PDX
-
CNX
29h 30m
2 stops
Multiple Airlines Logo
11:35 am - 4:22 pm
CNX
-
PDX
42h 47m
2 stops
$1,005Multiple Airlines
Sat, Apr 25 - Sun, May 10
Multiple Airlines Logo
5:35 pm - 10:20 am
PDX
-
CNX
26h 45m
2 stops
Multiple Airlines Logo
11:20 am - 9:25 am
CNX
-
PDX
36h 05m
2 stops
$1,008Multiple Airlines
Mon, Sep 7 - Sat, Sep 19
EVA Air Logo
9:30 pm - 10:25 am
PDX
-
CNX
22h 55m
2 stops
EVA Air Logo
11:35 am - 4:22 pm
CNX
-
PDX
42h 47m
2 stops
$1,055EVA Air
Sat, Apr 25 - Sun, May 10

China Airlines flights from Portland to Chiang Mai

Our best China Airlines deals on Portland to Chiang Mai flight tickets
China Airlines
Sep 11
PDX7:50 pmPortland
24h 30m
2 stops
CNX10:20 amChiang Mai
Sep 20
CNX11:20 amChiang Mai
36h 05m
2 stops
PDX9:25 amPortland
$949
China Airlines
Jul 24
PDX2:39 pmPortland
29h 41m
2 stops
CNX10:20 amChiang Mai
Aug 2
CNX11:20 amChiang Mai
26h 18m
2 stops
PDX11:38 pmPortland
$1,447

China Eastern flights from Portland to Chiang Mai

Our best China Eastern deals on Portland to Chiang Mai flight tickets
China Eastern
Apr 16
PDX6:45 amPortland
40h 40m
2 stops
CNX1:25 pmChiang Mai
Apr 22
CNX10:05 amChiang Mai
43h 33m
3 stops
PDX3:38 pmPortland
$1,437
China Eastern
Sep 9
PDX6:30 amPortland
40h 55m
2 stops
CNX1:25 pmChiang Mai
Sep 13
CNX2:55 pmChiang Mai
39h 15m
2 stops
PDX4:10 pmPortland
$1,441
China Eastern
Sep 9
PDX6:30 amPortland
40h 55m
2 stops
CNX1:25 pmChiang Mai
Sep 13
CNX2:55 pmChiang Mai
39h 15m
2 stops
PDX4:10 pmPortland
$2,007

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 April 3, 2026.
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

Cheapest round-trip

PortlandChiang Mai

PDX - CNX

PDXCNX

Portland

Mon 8/31

5:50 pm-10:20 am

2 stops26h 30m

Chiang Mai

Sat 9/5

11:20 am-9:25 am

2 stops36h 05m

$900

PortlandChiang Mai

PDX - CNX

PDXCNX

Portland

Mon 8/31

5:50 pm-10:20 am

2 stops26h 30m

Chiang Mai

Sat 9/5

11:20 am-8:57 am

2 stops35h 37m

$905

PortlandChiang Mai

PDX - CNX

PDXCNX

Portland

Fri 9/11

1:50 pm-10:20 am

2 stops30h 30m

Chiang Mai

Sun 9/20

11:20 am-8:50 pm

2 stops47h 30m

$924
Quickest round-trip

PortlandChiang Mai

PDX - CNX

PDXCNX

Portland

Fri 9/11

7:50 pm-10:20 am

2 stops24h 30m

Chiang Mai

Sun 9/20

11:20 am-9:25 am

2 stops36h 05m

$949

PortlandChiang Mai

PDX - CNX

PDXCNX

Portland

Wed 8/26

6:50 pm-10:20 am

2 stops25h 30m

Chiang Mai

Mon 8/31

11:20 am-9:07 am

2 stops35h 47m

$957

PortlandChiang Mai

PDX - CNX

PDXCNX

Portland

Mon 8/31

5:50 pm-10:20 am

2 stops26h 30m

Chiang Mai

Sat 9/5

11:20 am-9:25 am

2 stops36h 05m

$971

PortlandChiang Mai

PDX - CNX

PDXCNX

Portland

Mon 8/31

10:34 am-10:20 am

2 stops33h 46m

Chiang Mai

Sat 9/5

11:20 am-8:06 am

2 stops34h 46m

$982

PortlandChiang Mai

PDX - CNX

PDXCNX

Portland

Sat 4/25

2:55 pm-10:25 am

2 stops29h 30m

Chiang Mai

Sun 5/10

11:35 am-4:22 pm

2 stops42h 47m

$1,005

PortlandChiang Mai

PDX - CNX

PDXCNX

Portland

Mon 9/7

5:35 pm-10:20 am

2 stops26h 45m

Chiang Mai

Sat 9/19

11:20 am-9:25 am

2 stops36h 05m

$1,008

PortlandChiang Mai

PDX - CNX

PDXCNX

Portland

Sat 4/25

9:30 pm-10:25 am

2 stops22h 55m

Chiang Mai

Sun 5/10

11:35 am-4:22 pm

2 stops42h 47m

$1,055

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first
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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 30m

Direct flights

None
The fastest flight from Portland to Chiang Mai takes 25h 30m
There are no direct flights from Portland to Chiang Mai. There are no popular flight routes from Portland to Chiang Mai.
Search flight deals

Frequently asked questions about flying from Portland to Chiang Mai

  • 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 30m.

  • 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 $963Free CancellationRating
8.5
1,400 reviews
Search EVA Air flights

Frequently asked questions about flying from Portland to Chiang Mai

  • How do I get Price Alerts for flights from Portland to Chiang Mai?

    Price Alerts will notify you by email when the price for flights to Chiang Mai from Portland decreases. To activate this, select your desired travel dates and search for offers. While browsing through offers you’ll see the Price Alert widget toggle. Click it to turn on notifications.

  • How can I save money on flights from Portland to Chiang Mai with momondo?

    By using tools like our “Price Calendar”, you can see the best day to fly round-trip for your travels. Our “Price Forecast” tool uses AI to predict whether you should purchase or hold off on booking for potentially cheaper prices. Explore shows you all flight options from a city or airport to build your own unique adventure. The Discover blog also provides valuable insights for saving money while booking your experience. After searching you can toggle on “Price Alerts” to track prices for your desired flight and book at the ideal moment.

  • How does momondo find its flight prices?

    We show prices from over 700+ competitors with a single click. With options from airlines and OTAs from across our 30 international markets, we are able to show you a diverse range of deals to create your adventure.

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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