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Cheap flights from Portland to Chiang Mai from $558

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 11/12. 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

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
7:45 pm - 11:15 amPDX  Portland-CNX Chiang Mai
25h 30m2 stops Vancouver Intl Bangkok Suvarnabhumi
Multiple Airlines Logo
8:00 pm - 9:31 amCNX  Chiang Mai-PDX Portland
27h 31m2 stops Bangkok Suvarnabhumi Vancouver Intl
$883Multiple Airlines
Mon, Sep 14 - Tue, Sep 22
Korean Air Logo
9:31 am - 10:55 pmPDX  Portland-CNX Chiang Mai
23h 24m2 stops Seattle/Tacoma Intl Incheon Intl
Korean Air Logo
12:15 am - 5:04 pmCNX  Chiang Mai-PDX Portland
30h 49m2 stops Incheon Intl Seattle/Tacoma Intl
$997Korean Air
Mon, Oct 26 - Wed, Oct 28
Korean Air Logo
5:38 pm - 10:55 pmPDX  Portland-CNX Chiang Mai
38h 17m2 stops Los Angeles Incheon Intl
Korean Air Logo
12:15 am - 6:56 pmCNX  Chiang Mai-PDX Portland
33h 41m2 stops Incheon Intl Los Angeles
$997Korean Air
Tue, Nov 24 - Wed, Dec 2
Korean Air Logo
9:31 am - 10:55 pmPDX  Portland-CNX Chiang Mai
23h 24m2 stops Seattle/Tacoma Intl Incheon Intl
Korean Air Logo
12:15 am - 5:04 pmCNX  Chiang Mai-PDX Portland
30h 49m2 stops Incheon Intl Seattle/Tacoma Intl
$998Korean Air
Mon, Oct 26 - Wed, Oct 28
Korean Air Logo
7:05 am - 10:55 pmPDX  Portland-CNX Chiang Mai
24h 50m2 stops Los Angeles Incheon Intl
Korean Air Logo
12:15 am - 10:19 pmCNX  Chiang Mai-PDX Portland
37h 04m2 stops Incheon Intl Los Angeles
$998Korean Air
Mon, Nov 2 - Wed, Nov 4
Korean Air Logo
11:25 am - 10:55 pmPDX  Portland-CNX Chiang Mai
45h 30m2 stops Seattle/Tacoma Intl Incheon Intl
Korean Air Logo
12:15 am - 4:15 pmCNX  Chiang Mai-PDX Portland
31h 00m2 stops Incheon Intl Los Angeles
$1,003Korean Air
Sun, Oct 25 - Mon, Nov 2
Korean Air Logo
5:15 pm - 10:55 pmPDX  Portland-CNX Chiang Mai
38h 40m2 stops Los Angeles Incheon Intl
Korean Air Logo
12:15 am - 10:19 pmCNX  Chiang Mai-PDX Portland
37h 04m2 stops Incheon Intl Los Angeles
$1,004Korean Air
Sun, Nov 1 - Wed, Nov 4
Korean Air Logo
7:00 am - 10:55 pmPDX  Portland-CNX Chiang Mai
24h 55m2 stops Seattle/Tacoma Intl Incheon Intl
Korean Air Logo
12:15 am - 10:19 pmCNX  Chiang Mai-PDX Portland
37h 04m2 stops Incheon Intl Los Angeles
$1,029Korean Air
Mon, Nov 2 - Thu, Nov 5
Korean Air Logo
7:05 am - 10:55 pmPDX  Portland-CNX Chiang Mai
24h 50m2 stops Los Angeles Incheon Intl
Korean Air Logo
12:15 am - 8:53 pmCNX  Chiang Mai-PDX Portland
35h 38m2 stops Incheon Intl Los Angeles
$1,029Korean Air
Mon, Nov 2 - Fri, Nov 6
Korean Air Logo
7:05 am - 10:55 pmPDX  Portland-CNX Chiang Mai
24h 50m2 stops Los Angeles Incheon Intl
Korean Air Logo
12:15 am - 8:53 pmCNX  Chiang Mai-PDX Portland
35h 38m2 stops Incheon Intl Los Angeles
$1,029Korean Air
Wed, Nov 4 - Fri, Nov 6

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STARLUX Airlines flights from Portland to Chiang Mai

Our best STARLUX Airlines deals on Portland to Chiang Mai flight tickets
STARLUX Airlines
Oct 22
PDX7:37 pmPortland
30h 28m
2 stops
CNX4:05 pmChiang Mai
Nov 3
CNX5:00 pmChiang Mai
42h 54m
2 stops
PDX8:54 pmPortland
$1,236
STARLUX Airlines
Oct 20
PDX5:48 pmPortland
32h 17m
2 stops
CNX4:05 pmChiang Mai
Oct 31
CNX5:00 pmChiang Mai
42h 54m
2 stops
PDX9:54 pmPortland
$1,300

Korean Air flights from Portland to Chiang Mai

Our best Korean Air deals on Portland to Chiang Mai flight tickets
Korean Air
Oct 26
PDX9:31 amPortland
23h 24m
2 stops
CNX10:55 pmChiang Mai
Oct 28
CNX12:15 amChiang Mai
30h 49m
2 stops
PDX5:04 pmPortland
$997
Korean Air
Oct 26
PDX9:31 amPortland
23h 24m
2 stops
CNX10:55 pmChiang Mai
Oct 28
CNX12:15 amChiang Mai
30h 49m
2 stops
PDX5:04 pmPortland
$998
Korean Air
Oct 25
PDX11:25 amPortland
45h 30m
2 stops
CNX10:55 pmChiang Mai
Nov 2
CNX12:15 amChiang Mai
31h 00m
2 stops
PDX4:15 pmPortland
$1,003

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, 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
Quickest round-trip

PortlandChiang Mai

PDX Portland - CNX Chiang Mai

PDXCNX

Portland

Mon 9/14

7:45 pm-11:15 am

2 stops25h 30m

Chiang Mai

Tue 9/22

8:00 pm-9:31 am

2 stops27h 31m

$883

PortlandChiang Mai

PDX Portland - CNX Chiang Mai

PDXCNX

Portland

Mon 10/26

9:31 am-10:55 pm

2 stops23h 24m

Chiang Mai

Wed 10/28

12:15 am-5:04 pm

2 stops30h 49m

$997

PortlandChiang Mai

PDX Portland - CNX Chiang Mai

PDXCNX

Portland

Tue 11/24

5:38 pm-10:55 pm

2 stops38h 17m

Chiang Mai

Wed 12/2

12:15 am-6:56 pm

2 stops33h 41m

$997

PortlandChiang Mai

PDX Portland - CNX Chiang Mai

PDXCNX

Portland

Mon 10/26

9:31 am-10:55 pm

2 stops23h 24m

Chiang Mai

Wed 10/28

12:15 am-5:04 pm

2 stops30h 49m

$998

PortlandChiang Mai

PDX Portland - CNX Chiang Mai

PDXCNX

Portland

Mon 11/2

7:05 am-10:55 pm

2 stops24h 50m

Chiang Mai

Wed 11/4

12:15 am-10:19 pm

2 stops37h 04m

$998

PortlandChiang Mai

PDX Portland - CNX Chiang Mai

PDXCNX

Portland

Sun 10/25

11:25 am-10:55 pm

2 stops45h 30m

Chiang Mai

Mon 11/2

12:15 am-4:15 pm

2 stops31h 00m

$1,003

PortlandChiang Mai

PDX Portland - CNX Chiang Mai

PDXCNX

Portland

Sun 11/1

5:15 pm-10:55 pm

2 stops38h 40m

Chiang Mai

Wed 11/4

12:15 am-10:19 pm

2 stops37h 04m

$1,004

PortlandChiang Mai

PDX Portland - CNX Chiang Mai

PDXCNX

Portland

Mon 11/2

7:00 am-10:55 pm

2 stops24h 55m

Chiang Mai

Thu 11/5

12:15 am-10:19 pm

2 stops37h 04m

$1,029

PortlandChiang Mai

PDX Portland - CNX Chiang Mai

PDXCNX

Portland

Mon 11/2

7:05 am-10:55 pm

2 stops24h 50m

Chiang Mai

Fri 11/6

12:15 am-8:53 pm

2 stops35h 38m

$1,029

PortlandChiang Mai

PDX Portland - CNX Chiang Mai

PDXCNX

Portland

Wed 11/4

7:05 am-10:55 pm

2 stops24h 50m

Chiang Mai

Fri 11/6

12:15 am-8:53 pm

2 stops35h 38m

$1,029

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 cheapest airline that flies from Portland to Chiang Mai?

Korean Air is the most popular carrier operating from Portland to Chiang Mai

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 45m

Direct flights

None
The fastest flight from Portland to Chiang Mai takes 23h 45m
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 23h 45m.

  • 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 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.

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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