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Cheap flights from Portland to Chiang Mai from $541

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 9/3. 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
7:01 am - 2:20 pmPDX  Portland-CNX Chiang Mai
40h 19m2 stops San Francisco Shanghai Pu Dong
Multiple Airlines Logo
3:35 pm - 11:10 pmCNX  Chiang Mai-PDX Portland
46h 35m2 stops Shanghai Pu Dong Los Angeles
$924Multiple Airlines
Mon, Nov 2 - Tue, Nov 10
Multiple Airlines Logo
6:53 pm - 1:25 pmPDX  Portland-CNX Chiang Mai
52h 32m2 stops San Francisco Shanghai Pu Dong
Multiple Airlines Logo
2:55 pm - 9:55 pmCNX  Chiang Mai-PDX Portland
45h 00m2 stops Shanghai Pu Dong Los Angeles
$966Multiple Airlines
Fri, Sep 4 - Thu, Sep 10
Multiple Airlines Logo
6:53 pm - 1:25 pmPDX  Portland-CNX Chiang Mai
52h 32m2 stops San Francisco Shanghai Pu Dong
Multiple Airlines Logo
2:55 pm - 9:55 pmCNX  Chiang Mai-PDX Portland
45h 00m2 stops Shanghai Pu Dong Los Angeles
$989Multiple Airlines
Fri, Sep 4 - Thu, Sep 10
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 - 4:23 pmCNX  Chiang Mai-PDX Portland
31h 08m2 stops Incheon Intl Los Angeles
$997Korean Air
Tue, Nov 3 - Sun, Nov 8
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
7:05 am - 10:55 pmPDX  Portland-CNX Chiang Mai
48h 50m2 stops Los Angeles Incheon Intl
Korean Air Logo
12:15 am - 4:23 pmCNX  Chiang Mai-PDX Portland
31h 08m2 stops Incheon Intl Los Angeles
$1,004Korean Air
Mon, Nov 2 - Wed, Nov 11
Korean Air Logo
7:00 am - 10:55 pmPDX  Portland-CNX Chiang Mai
24h 55m2 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
$1,015Korean Air
Wed, Dec 2 - Wed, Dec 9
Multiple Airlines Logo
8:18 pm - 1:25 pmPDX  Portland-CNX Chiang Mai
51h 07m2 stops Los Angeles Shanghai Pu Dong
Multiple Airlines Logo
2:55 pm - 9:55 pmCNX  Chiang Mai-PDX Portland
45h 00m2 stops Shanghai Pu Dong Los Angeles
$1,019Multiple Airlines
Fri, Sep 4 - Thu, Sep 10
Multiple Airlines Logo
6:47 am - 2:20 pmPDX  Portland-CNX Chiang Mai
40h 33m2 stops Los Angeles Shanghai Pu Dong
Multiple Airlines Logo
3:35 pm - 4:42 pmCNX  Chiang Mai-PDX Portland
40h 07m2 stops Shanghai Pu Dong Los Angeles
$1,035Multiple Airlines
Mon, Nov 16 - Wed, Dec 16
Multiple Airlines Logo
7:45 pm - 1:00 pmPDX  Portland-CNX Chiang Mai
27h 15m2 stops Vancouver Intl Bangkok Suvarnabhumi
Multiple Airlines Logo
11:00 pm - 7:11 pmCNX  Chiang Mai-PDX Portland
34h 11m2 stops Incheon Intl Vancouver Intl
$1,052Multiple Airlines
Wed, Sep 2 - Wed, Sep 9

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Korean Air flights from Portland to Chiang Mai

Our best Korean Air deals on Portland to Chiang Mai flight tickets
Korean Air
Nov 3
PDX7:05 amPortland
24h 50m
2 stops
CNX10:55 pmChiang Mai
Nov 11
CNX12:15 amChiang Mai
33h 41m
2 stops
PDX6:56 pmPortland
$997
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
Korean Air
Nov 2
PDX5:15 pmPortland
38h 40m
2 stops
CNX10:55 pmChiang Mai
Nov 10
CNX12:15 amChiang Mai
35h 41m
2 stops
PDX8:56 pmPortland
$1,004

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 9, 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 Portland - CNX Chiang Mai

PDXCNX

Portland

Mon 11/2

7:01 am-2:20 pm

2 stops40h 19m

Chiang Mai

Tue 11/10

3:35 pm-11:10 pm

2 stops46h 35m

$924

PortlandChiang Mai

PDX Portland - CNX Chiang Mai

PDXCNX

Portland

Fri 9/4

6:53 pm-1:25 pm

2 stops52h 32m

Chiang Mai

Thu 9/10

2:55 pm-9:55 pm

2 stops45h 00m

$966

PortlandChiang Mai

PDX Portland - CNX Chiang Mai

PDXCNX

Portland

Fri 9/4

6:53 pm-1:25 pm

2 stops52h 32m

Chiang Mai

Thu 9/10

2:55 pm-9:55 pm

2 stops45h 00m

$989
Quickest round-trip

PortlandChiang Mai

PDX Portland - CNX Chiang Mai

PDXCNX

Portland

Tue 11/3

7:05 am-10:55 pm

2 stops24h 50m

Chiang Mai

Sun 11/8

12:15 am-4:23 pm

2 stops31h 08m

$997

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

Mon 11/2

7:05 am-10:55 pm

2 stops48h 50m

Chiang Mai

Wed 11/11

12:15 am-4:23 pm

2 stops31h 08m

$1,004

PortlandChiang Mai

PDX Portland - CNX Chiang Mai

PDXCNX

Portland

Wed 12/2

7:00 am-10:55 pm

2 stops24h 55m

Chiang Mai

Wed 12/9

12:15 am-6:56 pm

2 stops33h 41m

$1,015

PortlandChiang Mai

PDX Portland - CNX Chiang Mai

PDXCNX

Portland

Fri 9/4

8:18 pm-1:25 pm

2 stops51h 07m

Chiang Mai

Thu 9/10

2:55 pm-9:55 pm

2 stops45h 00m

$1,019

PortlandChiang Mai

PDX Portland - CNX Chiang Mai

PDXCNX

Portland

Mon 11/16

6:47 am-2:20 pm

2 stops40h 33m

Chiang Mai

Wed 12/16

3:35 pm-4:42 pm

2 stops40h 07m

$1,035

PortlandChiang Mai

PDX Portland - CNX Chiang Mai

PDXCNX

Portland

Wed 9/2

7:45 pm-1:00 pm

2 stops27h 15m

Chiang Mai

Wed 9/9

11:00 pm-7:11 pm

2 stops34h 11m

$1,052

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

22h 48m

Direct flights

None
The fastest flight from Portland to Chiang Mai takes 22h 48m
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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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 48m.

  • 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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