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Cheap flights from Portland to Chiang Mai from $387

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 9/13. 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
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
7:00 am - 1:25 pm
PDX
-
CNX
40h 25m
2 stops
Multiple Airlines Logo
2:55 pm - 8:50 pm
CNX
-
PDX
43h 55m
2 stops
$1,004Multiple Airlines
Thu, Sep 3 - Mon, Sep 14
Multiple Airlines Logo
7:00 am - 1:25 pm
PDX
-
CNX
40h 25m
2 stops
Multiple Airlines Logo
2:55 pm - 8:50 pm
CNX
-
PDX
43h 55m
2 stops
$1,032Multiple Airlines
Thu, Sep 3 - Sun, Sep 13
China Eastern Logo
6:30 am - 1:25 pm
PDX
-
CNX
40h 55m
2 stops
China Eastern Logo
2:55 pm - 4:10 pm
CNX
-
PDX
39h 15m
2 stops
$1,054China Eastern
Mon, Aug 31 - Mon, Sep 14
Multiple Airlines Logo
7:00 am - 1:25 pm
PDX
-
CNX
40h 25m
2 stops
Multiple Airlines Logo
2:55 pm - 11:24 pm
CNX
-
PDX
46h 29m
2 stops
$1,080Multiple Airlines
Mon, Aug 31 - Sat, Sep 5
China Airlines Logo
5:35 pm - 10:20 am
PDX
-
CNX
26h 45m
2 stops
China Airlines Logo
11:20 am - 10:27 am
CNX
-
PDX
37h 07m
2 stops
$1,182China Airlines
Mon, Aug 31 - Sat, Sep 5
Multiple Airlines Logo
7:00 am - 10:25 am
PDX
-
CNX
37h 25m
2 stops
Multiple Airlines Logo
11:35 am - 8:50 pm
CNX
-
PDX
23h 15m
2 stops
$1,187Multiple Airlines
Wed, May 13 - Wed, May 20
EVA Air Logo
7:00 am - 10:25 am
PDX
-
CNX
37h 25m
2 stops
EVA Air Logo
11:35 am - 9:29 am
CNX
-
PDX
35h 54m
2 stops
$1,204EVA Air
Wed, May 13 - Wed, May 20
Multiple Airlines Logo
5:50 pm - 10:25 am
PDX
-
CNX
50h 35m
2 stops
Multiple Airlines Logo
8:00 pm - 8:13 am
CNX
-
PDX
50h 13m
3 stops
$1,221Multiple Airlines
Mon, Aug 31 - Mon, Sep 14
Qatar Airways Logo
1:59 pm - 11:15 am
PDX
-
CNX
31h 16m
3 stops
Qatar Airways Logo
8:00 pm - 10:01 pm
CNX
-
PDX
40h 01m
3 stops
$1,298Qatar Airways
Mon, Aug 31 - Mon, Sep 14
Multiple Airlines Logo
5:59 pm - 10:25 am
PDX
-
CNX
26h 26m
2 stops
Multiple Airlines Logo
8:00 pm - 11:59 pm
CNX
-
PDX
41h 59m
3 stops
$1,306Multiple Airlines
Wed, May 13 - Wed, May 20

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EVA Air flights from Portland to Chiang Mai

Our best EVA Air deals on Portland to Chiang Mai flight tickets
EVA Air
May 13
PDX7:00 amPortland
37h 25m
2 stops
CNX10:25 amChiang Mai
May 20
CNX11:35 amChiang Mai
35h 54m
2 stops
PDX9:29 amPortland
$1,204
EVA Air
May 30
PDX9:46 pmPortland
22h 39m
2 stops
CNX10:25 amChiang Mai
Jun 6
CNX11:35 amChiang Mai
37h 58m
2 stops
PDX11:33 amPortland
$1,807

Qatar Airways flights from Portland to Chiang Mai

Our best Qatar Airways deals on Portland to Chiang Mai flight tickets
Qatar Airways
Aug 31
PDX1:59 pmPortland
31h 16m
3 stops
CNX11:15 amChiang Mai
Sep 14
CNX8:00 pmChiang Mai
40h 01m
3 stops
PDX10:01 pmPortland
$1,298
Qatar Airways
Sep 3
PDX11:55 amPortland
31h 25m
3 stops
CNX9:20 amChiang Mai
Sep 13
CNX8:00 pmChiang Mai
37h 50m
3 stops
PDX7:50 pmPortland
$1,338
Qatar Airways
Apr 25
PDX8:45 amPortland
39h 00m
3 stops
CNX1:45 pmChiang Mai
May 10
CNX8:00 pmChiang Mai
40h 53m
3 stops
PDX10:53 pmPortland
$1,356

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 20, 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

Thu 9/3

7:00 am-1:25 pm

2 stops40h 25m

Chiang Mai

Mon 9/14

2:55 pm-8:50 pm

2 stops43h 55m

$1,004

PortlandChiang Mai

PDX - CNX

PDXCNX

Portland

Thu 9/3

7:00 am-1:25 pm

2 stops40h 25m

Chiang Mai

Sun 9/13

2:55 pm-8:50 pm

2 stops43h 55m

$1,032

PortlandChiang Mai

PDX - CNX

PDXCNX

Portland

Mon 8/31

6:30 am-1:25 pm

2 stops40h 55m

Chiang Mai

Mon 9/14

2:55 pm-4:10 pm

2 stops39h 15m

$1,054

PortlandChiang Mai

PDX - CNX

PDXCNX

Portland

Mon 8/31

7:00 am-1:25 pm

2 stops40h 25m

Chiang Mai

Sat 9/5

2:55 pm-11:24 pm

2 stops46h 29m

$1,080

PortlandChiang Mai

PDX - CNX

PDXCNX

Portland

Mon 8/31

5:35 pm-10:20 am

2 stops26h 45m

Chiang Mai

Sat 9/5

11:20 am-10:27 am

2 stops37h 07m

$1,182
Quickest round-trip

PortlandChiang Mai

PDX - CNX

PDXCNX

Portland

Wed 5/13

7:00 am-10:25 am

2 stops37h 25m

Chiang Mai

Wed 5/20

11:35 am-8:50 pm

2 stops23h 15m

$1,187

PortlandChiang Mai

PDX - CNX

PDXCNX

Portland

Wed 5/13

7:00 am-10:25 am

2 stops37h 25m

Chiang Mai

Wed 5/20

11:35 am-9:29 am

2 stops35h 54m

$1,204

PortlandChiang Mai

PDX - CNX

PDXCNX

Portland

Mon 8/31

5:50 pm-10:25 am

2 stops50h 35m

Chiang Mai

Mon 9/14

8:00 pm-8:13 am

3 stops50h 13m

$1,221

PortlandChiang Mai

PDX - CNX

PDXCNX

Portland

Mon 8/31

1:59 pm-11:15 am

3 stops31h 16m

Chiang Mai

Mon 9/14

8:00 pm-10:01 pm

3 stops40h 01m

$1,298

PortlandChiang Mai

PDX - CNX

PDXCNX

Portland

Wed 5/13

5:59 pm-10:25 am

2 stops26h 26m

Chiang Mai

Wed 5/20

8:00 pm-11:59 pm

3 stops41h 59m

$1,306

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

22h 39m

Direct flights

None
The fastest flight from Portland to Chiang Mai takes 22h 39m
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 22h 39m.

  • 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
1,422 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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