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Cheap flights from Portland to Chiang Mai from $456

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 8/24. 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 (PDX-CNX)

Cheap round-trip flights

Logo
1:45 pm - 3:55 pmPDX-CNX
35h 10m2 stops
Logo
4:55 pm - 6:53 pmCNX-PDX
40h 58m2 stops
$835
Find Deal
Thu, Jan 22 - Thu, Feb 5
Delta Logo
5:30 am - 11:05 pmPDX-CNX
27h 35m2 stops
Delta Logo
12:15 am - 11:51 pmCNX-PDX
38h 36m2 stops
$840Delta
Find Deal
Mon, Oct 27 - Sun, Nov 9
Korean Air Logo
5:01 pm - 9:55 pmPDX-CNX
38h 54m2 stops
Korean Air Logo
11:15 pm - 5:10 pmCNX-PDX
31h 55m2 stops
$846Korean Air
Find Deal
Sat, Sep 13 - Sun, Sep 21
Logo
10:36 am - 11:40 pmPDX-CNX
23h 04m2 stops
Logo
12:45 am - 10:47 pmCNX-PDX
36h 02m2 stops
$858
Find Deal
Tue, Sep 9 - Mon, Sep 15
STARLUX Airlines Logo
7:45 pm - 3:55 pmPDX-CNX
29h 10m2 stops
STARLUX Airlines Logo
4:55 pm - 8:43 pmCNX-PDX
42h 48m2 stops
$888STARLUX Airlines
Find Deal
Sun, Jan 25 - Thu, Feb 5
China Airlines Logo
3:29 pm - 10:25 amPDX-CNX
27h 56m2 stops
China Airlines Logo
11:25 am - 11:19 pmCNX-PDX
26h 54m2 stops
$902China Airlines
Find Deal
Mon, Nov 10 - Wed, Dec 3
STARLUX Airlines Logo
7:45 pm - 3:55 pmPDX-CNX
29h 10m2 stops
STARLUX Airlines Logo
4:55 pm - 10:26 pmCNX-PDX
44h 31m2 stops
$923STARLUX Airlines
Find Deal
Sun, Jan 25 - Sat, Feb 7
China Airlines Logo
10:30 am - 10:20 amPDX-CNX
33h 50m2 stops
China Airlines Logo
11:25 am - 11:19 pmCNX-PDX
26h 54m2 stops
$928China Airlines
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Thu, Sep 4 - Wed, Dec 3
Korean Air Logo
9:17 am - 9:55 pmPDX-CNX
22h 38m2 stops
Korean Air Logo
12:15 am - 8:39 pmCNX-PDX
34h 24m2 stops
$953Korean Air
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Wed, Oct 22 - Tue, Oct 28
EVA Air Logo
12:33 pm - 10:35 amPDX-CNX
55h 02m2 stops
EVA Air Logo
11:50 am - 8:50 pmCNX-PDX
24h 00m2 stops
$1,075EVA Air
Find Deal
Tue, Nov 4 - Sun, Nov 16

Delta flights from Portland to Chiang Mai

Our best Delta deals on Portland to Chiang Mai flight tickets
Delta
Oct 27
PDX5:30 amPortland
27h 35m
2 stops
CNX11:05 pmChiang Mai
Nov 9
CNX12:15 amChiang Mai
38h 36m
2 stops
PDX11:51 pmPortland
$840
Find similar
Delta
Jan 23
PDX7:10 amPortland
24h 55m
2 stops
CNX11:05 pmChiang Mai
Feb 4
CNX12:15 amChiang Mai
51h 59m
2 stops
PDX1:14 pmPortland
$974
Find similar
Delta
Jan 24
PDX11:10 amPortland
44h 55m
2 stops
CNX11:05 pmChiang Mai
Feb 4
CNX12:15 amChiang Mai
49h 19m
2 stops
PDX10:34 amPortland
$979
Find similar

China Airlines flights from Portland to Chiang Mai

Our best China Airlines deals on Portland to Chiang Mai flight tickets
China Airlines
Nov 10
PDX3:29 pmPortland
27h 56m
2 stops
CNX10:25 amChiang Mai
Dec 3
CNX11:25 amChiang Mai
26h 54m
2 stops
PDX11:19 pmPortland
$902
Find similar
China Airlines
Sep 4
PDX10:30 amPortland
33h 50m
2 stops
CNX10:20 amChiang Mai
Dec 3
CNX11:25 amChiang Mai
26h 54m
2 stops
PDX11:19 pmPortland
$928
Find similar
China Airlines
Sep 28
PDX2:32 pmPortland
29h 48m
2 stops
CNX10:20 amChiang Mai
Oct 5
CNX11:20 amChiang Mai
36h 10m
2 stops
PDX9:30 amPortland
$962
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 August 14, 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

Thu 1/22

1:45 pm-3:55 pm

2 stops35h 10m

Chiang Mai

Thu 2/5

4:55 pm-6:53 pm

2 stops40h 58m

$835

PortlandChiang Mai

PDX - CNX

PDXCNX

Portland

Mon 10/27

5:30 am-11:05 pm

2 stops27h 35m

Chiang Mai

Sun 11/9

12:15 am-11:51 pm

2 stops38h 36m

$840

PortlandChiang Mai

PDX - CNX

PDXCNX

Portland

Sat 9/13

5:01 pm-9:55 pm

2 stops38h 54m

Chiang Mai

Sun 9/21

11:15 pm-5:10 pm

2 stops31h 55m

$846

PortlandChiang Mai

PDX - CNX

PDXCNX

Portland

Tue 9/9

10:36 am-11:40 pm

2 stops23h 04m

Chiang Mai

Mon 9/15

12:45 am-10:47 pm

2 stops36h 02m

$858

PortlandChiang Mai

PDX - CNX

PDXCNX

Portland

Sun 1/25

7:45 pm-3:55 pm

2 stops29h 10m

Chiang Mai

Thu 2/5

4:55 pm-8:43 pm

2 stops42h 48m

$888

PortlandChiang Mai

PDX - CNX

PDXCNX

Portland

Mon 11/10

3:29 pm-10:25 am

2 stops27h 56m

Chiang Mai

Wed 12/3

11:25 am-11:19 pm

2 stops26h 54m

$902

PortlandChiang Mai

PDX - CNX

PDXCNX

Portland

Sun 1/25

7:45 pm-3:55 pm

2 stops29h 10m

Chiang Mai

Sat 2/7

4:55 pm-10:26 pm

2 stops44h 31m

$923

PortlandChiang Mai

PDX - CNX

PDXCNX

Portland

Thu 9/4

10:30 am-10:20 am

2 stops33h 50m

Chiang Mai

Wed 12/3

11:25 am-11:19 pm

2 stops26h 54m

$928

PortlandChiang Mai

PDX - CNX

PDXCNX

Portland

Wed 10/22

9:17 am-9:55 pm

2 stops22h 38m

Chiang Mai

Tue 10/28

12:15 am-8:39 pm

2 stops34h 24m

$953

PortlandChiang Mai

PDX - CNX

PDXCNX

Portland

Tue 11/4

12:33 pm-10:35 am

2 stops55h 02m

Chiang Mai

Sun 11/16

11:50 am-8:50 pm

2 stops24h 00m

$1,075

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 month to fly to Chiang Mai?

If you don’t want to visit Chiang Mai in May, then you should wait until October to fly from Portland, when ticket prices are also cheap, with an average price of $1,031.

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

Best Price Found

$456

Fastest flight time

22h 35m

Direct flights

None

Airports in Chiang Mai

1 airport
The best one-way flight to Chiang Mai from Portland in the past 72 hours is $456. The best round-trip flight deal from Portland to Chiang Mai found on momondo in the last 72 hours is $835.
The fastest flight from Portland to Chiang Mai takes 22h 35m
There are no direct flights from Portland to Chiang Mai. Popular non-direct route for this connection is Portland Airport - Chiang Mai Airport.
There is 1 airport near Chiang Mai: Chiang Mai (CNX)
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 35m.

  • 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
Korean AirPriceFrom $789Free CancellationRating
8.4
1,131 reviews
Search Korean Air flights
EVA AirPriceFrom $1,030Free CancellationRating
8.4
1,233 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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