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Cheap flights from Portland to Chiang Mai from $440

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 3/15. 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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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
2:50 pm - 10:20 am
PDX
-
CNX
29h 30m
2 stops
Multiple Airlines Logo
11:20 am - 9:25 am
CNX
-
PDX
36h 05m
2 stops
$850Multiple Airlines
Tue, May 12 - Tue, Jun 9
Multiple Airlines Logo
5:40 pm - 10:20 am
PDX
-
CNX
26h 40m
2 stops
Multiple Airlines Logo
11:20 am - 11:03 pm
CNX
-
PDX
25h 43m
2 stops
$885Multiple Airlines
Mon, May 18 - Tue, Jun 9
Multiple Airlines Logo
5:45 pm - 10:20 am
PDX
-
CNX
26h 35m
2 stops
Multiple Airlines Logo
11:20 am - 9:35 am
CNX
-
PDX
36h 15m
2 stops
$897Multiple Airlines
Mon, Mar 30 - Mon, Apr 6
Multiple Airlines Logo
9:30 pm - 10:20 am
PDX
-
CNX
22h 50m
2 stops
Multiple Airlines Logo
11:20 am - 9:38 am
CNX
-
PDX
36h 18m
2 stops
$903Multiple Airlines
Sat, Apr 25 - Sun, May 10
Multiple Airlines Logo
5:40 pm - 10:20 am
PDX
-
CNX
26h 40m
2 stops
Multiple Airlines Logo
11:20 am - 10:39 pm
CNX
-
PDX
25h 19m
2 stops
$917Multiple Airlines
Mon, May 18 - Thu, Jun 11
Multiple Airlines Logo
8:46 pm - 10:20 am
PDX
-
CNX
23h 34m
2 stops
Multiple Airlines Logo
11:20 am - 10:53 pm
CNX
-
PDX
25h 33m
2 stops
$919Multiple Airlines
Wed, Apr 15 - Sun, Apr 26
Multiple Airlines Logo
5:51 pm - 10:20 am
PDX
-
CNX
26h 29m
2 stops
Multiple Airlines Logo
11:20 am - 9:38 am
CNX
-
PDX
36h 18m
2 stops
$921Multiple Airlines
Sat, Apr 25 - Sun, May 10
Multiple Airlines Logo
5:40 pm - 10:20 am
PDX
-
CNX
26h 40m
2 stops
Multiple Airlines Logo
11:20 am - 11:03 pm
CNX
-
PDX
25h 43m
2 stops
$923Multiple Airlines
Mon, May 18 - Sun, Jun 7
Multiple Airlines Logo
2:55 pm - 10:20 am
PDX
-
CNX
29h 25m
2 stops
Multiple Airlines Logo
11:20 am - 9:38 am
CNX
-
PDX
36h 18m
2 stops
$925Multiple Airlines
Sat, Apr 25 - Sun, May 10
Multiple Airlines Logo
5:40 pm - 10:20 am
PDX
-
CNX
26h 40m
2 stops
Multiple Airlines Logo
11:20 am - 11:03 pm
CNX
-
PDX
25h 43m
2 stops
$945Multiple Airlines
Sun, May 17 - Mon, Jun 8

China Eastern flights from Portland to Chiang Mai

Our best China Eastern deals on Portland to Chiang Mai flight tickets
China Eastern
Feb 23
PDX6:25 amPortland
35h 15m
3 stops
CNX8:40 amChiang Mai
Mar 24
CNX4:25 pmChiang Mai
38h 18m
3 stops
PDX4:43 pmPortland
$1,418
China Eastern
Feb 26
PDX6:25 amPortland
35h 15m
3 stops
CNX8:40 amChiang Mai
Mar 8
CNX4:25 pmChiang Mai
38h 18m
3 stops
PDX3:43 pmPortland
$1,829

China Airlines flights from Portland to Chiang Mai

Our best China Airlines deals on Portland to Chiang Mai flight tickets
China Airlines
Aug 1
PDX9:00 amPortland
35h 20m
2 stops
CNX10:20 amChiang Mai
Aug 12
CNX11:20 amChiang Mai
23h 28m
2 stops
PDX8:48 pmPortland
$1,077
China Airlines
Feb 28
PDX9:48 pmPortland
45h 37m
2 stops
CNX10:25 amChiang Mai
Mar 25
CNX11:25 amChiang Mai
36h 25m
2 stops
PDX9:50 amPortland
$1,099

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 February 13, 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

PortlandChiang Mai

PDX - CNX

PDXCNX

Portland

Tue 5/12

2:50 pm-10:20 am

2 stops29h 30m

Chiang Mai

Tue 6/9

11:20 am-9:25 am

2 stops36h 05m

$850

PortlandChiang Mai

PDX - CNX

PDXCNX

Portland

Mon 5/18

5:40 pm-10:20 am

2 stops26h 40m

Chiang Mai

Tue 6/9

11:20 am-11:03 pm

2 stops25h 43m

$885

PortlandChiang Mai

PDX - CNX

PDXCNX

Portland

Mon 3/30

5:45 pm-10:20 am

2 stops26h 35m

Chiang Mai

Mon 4/6

11:20 am-9:35 am

2 stops36h 15m

$897

PortlandChiang Mai

PDX - CNX

PDXCNX

Portland

Sat 4/25

9:30 pm-10:20 am

2 stops22h 50m

Chiang Mai

Sun 5/10

11:20 am-9:38 am

2 stops36h 18m

$903

PortlandChiang Mai

PDX - CNX

PDXCNX

Portland

Mon 5/18

5:40 pm-10:20 am

2 stops26h 40m

Chiang Mai

Thu 6/11

11:20 am-10:39 pm

2 stops25h 19m

$917

PortlandChiang Mai

PDX - CNX

PDXCNX

Portland

Wed 4/15

8:46 pm-10:20 am

2 stops23h 34m

Chiang Mai

Sun 4/26

11:20 am-10:53 pm

2 stops25h 33m

$919

PortlandChiang Mai

PDX - CNX

PDXCNX

Portland

Sat 4/25

5:51 pm-10:20 am

2 stops26h 29m

Chiang Mai

Sun 5/10

11:20 am-9:38 am

2 stops36h 18m

$921

PortlandChiang Mai

PDX - CNX

PDXCNX

Portland

Mon 5/18

5:40 pm-10:20 am

2 stops26h 40m

Chiang Mai

Sun 6/7

11:20 am-11:03 pm

2 stops25h 43m

$923

PortlandChiang Mai

PDX - CNX

PDXCNX

Portland

Sat 4/25

2:55 pm-10:20 am

2 stops29h 25m

Chiang Mai

Sun 5/10

11:20 am-9:38 am

2 stops36h 18m

$925

PortlandChiang Mai

PDX - CNX

PDXCNX

Portland

Sun 5/17

5:40 pm-10:20 am

2 stops26h 40m

Chiang Mai

Mon 6/8

11:20 am-11:03 pm

2 stops25h 43m

$945

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 18 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

23h 34m

Direct flights

None
The fastest flight from Portland to Chiang Mai takes 23h 34m
There are no direct flights from Portland to Chiang Mai. There are no popular flight routes from Portland to Chiang Mai.
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  • 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 34m.

  • 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
8.4
1,353 reviews
Search EVA Air flights

  • 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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