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Cheap flights from Portland to Chiang Mai from $555

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 8/28. 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
7:03 am - 1:25 pm
PDX
-
CNX
40h 22m
2 stops
Multiple Airlines Logo
2:55 pm - 11:59 pm
CNX
-
PDX
47h 04m
2 stops
$1,061Multiple Airlines
Mon, Aug 31 - Sat, Sep 5
Multiple Airlines Logo
7:03 am - 1:25 pm
PDX
-
CNX
40h 22m
2 stops
Multiple Airlines Logo
2:55 pm - 11:59 pm
CNX
-
PDX
47h 04m
2 stops
$1,069Multiple Airlines
Mon, Aug 31 - Sat, Sep 5
Multiple Airlines Logo
9:29 pm - 10:20 am
PDX
-
CNX
22h 51m
2 stops
Multiple Airlines Logo
11:25 am - 11:02 pm
CNX
-
PDX
25h 37m
2 stops
$1,111Multiple Airlines
Sun, Oct 18 - Thu, Oct 29
Multiple Airlines Logo
7:37 pm - 1:45 pm
PDX
-
CNX
28h 08m
3 stops
Multiple Airlines Logo
11:50 am - 8:50 pm
CNX
-
PDX
23h 00m
2 stops
$1,222Multiple Airlines
Sun, Oct 18 - Thu, Oct 29
Multiple Airlines Logo
7:37 pm - 1:45 pm
PDX
-
CNX
28h 08m
3 stops
Multiple Airlines Logo
2:05 pm - 11:02 pm
CNX
-
PDX
22h 57m
3 stops
$1,266Multiple Airlines
Sun, Oct 18 - Thu, Oct 29
Multiple Airlines Logo
5:41 pm - 1:45 pm
PDX
-
CNX
30h 04m
3 stops
Multiple Airlines Logo
11:20 am - 10:58 pm
CNX
-
PDX
25h 38m
2 stops
$1,279Multiple Airlines
Mon, Aug 31 - Sat, Sep 5
Multiple Airlines Logo
5:41 pm - 1:45 pm
PDX
-
CNX
30h 04m
3 stops
Multiple Airlines Logo
11:20 am - 11:55 pm
CNX
-
PDX
26h 35m
2 stops
$1,295Multiple Airlines
Mon, Aug 31 - Sat, Sep 5
Multiple Airlines Logo
5:38 pm - 10:25 am
PDX
-
CNX
50h 47m
2 stops
Multiple Airlines Logo
1:40 pm - 9:56 am
CNX
-
PDX
34h 16m
3 stops
$1,302Multiple Airlines
Mon, Aug 31 - Sat, Sep 5
Multiple Airlines Logo
7:53 pm - 10:25 am
PDX
-
CNX
24h 32m
2 stops
Multiple Airlines Logo
1:40 pm - 9:56 am
CNX
-
PDX
34h 16m
3 stops
$1,318Multiple Airlines
Mon, Aug 31 - Sat, Sep 5
Korean Air Logo
6:30 am - 10:55 pm
PDX
-
CNX
25h 25m
2 stops
Korean Air Logo
12:15 am - 1:18 pm
CNX
-
PDX
28h 03m
2 stops
$1,347Korean Air
Thu, Nov 5 - Sun, Nov 8

Korean Air flights from Portland to Chiang Mai

Our best Korean Air deals on Portland to Chiang Mai flight tickets
Korean Air
Nov 5
PDX6:30 amPortland
25h 25m
2 stops
CNX10:55 pmChiang Mai
Nov 8
CNX12:15 amChiang Mai
28h 03m
2 stops
PDX1:18 pmPortland
$1,347
Korean Air
Nov 2
PDX6:30 amPortland
25h 25m
2 stops
CNX10:55 pmChiang Mai
Nov 5
CNX12:15 amChiang Mai
34h 13m
2 stops
PDX7:28 pmPortland
$1,364
Korean Air
Nov 5
PDX11:10 amPortland
44h 45m
2 stops
CNX10:55 pmChiang Mai
Nov 8
CNX12:15 amChiang Mai
28h 03m
2 stops
PDX1:18 pmPortland
$1,370

Air Canada flights from Portland to Chiang Mai

Our best Air Canada deals on Portland to Chiang Mai flight tickets
Air Canada
Jun 21
PDX3:30 pmPortland
51h 15m
3 stops
CNX8:45 amChiang Mai
Jul 12
CNX9:10 pmChiang Mai
36h 01m
2 stops
PDX7:11 pmPortland
$1,645
Air Canada
Jun 21
PDX3:30 pmPortland
35h 05m
2 stops
CNX4:35 pmChiang Mai
Jul 12
CNX9:10 pmChiang Mai
26h 21m
2 stops
PDX9:31 amPortland
$1,691
Air Canada
Jun 16
PDX3:30 pmPortland
36h 10m
2 stops
CNX5:40 pmChiang Mai
Jul 8
CNX11:30 amChiang Mai
41h 21m
2 stops
PDX2:51 pmPortland
$1,838

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 May 24, 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

Mon 8/31

7:03 am-1:25 pm

2 stops40h 22m

Chiang Mai

Sat 9/5

2:55 pm-11:59 pm

2 stops47h 04m

$1,061

PortlandChiang Mai

PDX - CNX

PDXCNX

Portland

Mon 8/31

7:03 am-1:25 pm

2 stops40h 22m

Chiang Mai

Sat 9/5

2:55 pm-11:59 pm

2 stops47h 04m

$1,069
Quickest round-trip

PortlandChiang Mai

PDX - CNX

PDXCNX

Portland

Sun 10/18

9:29 pm-10:20 am

2 stops22h 51m

Chiang Mai

Thu 10/29

11:25 am-11:02 pm

2 stops25h 37m

$1,111

PortlandChiang Mai

PDX - CNX

PDXCNX

Portland

Sun 10/18

7:37 pm-1:45 pm

3 stops28h 08m

Chiang Mai

Thu 10/29

11:50 am-8:50 pm

2 stops23h 00m

$1,222

PortlandChiang Mai

PDX - CNX

PDXCNX

Portland

Sun 10/18

7:37 pm-1:45 pm

3 stops28h 08m

Chiang Mai

Thu 10/29

2:05 pm-11:02 pm

3 stops22h 57m

$1,266

PortlandChiang Mai

PDX - CNX

PDXCNX

Portland

Mon 8/31

5:41 pm-1:45 pm

3 stops30h 04m

Chiang Mai

Sat 9/5

11:20 am-10:58 pm

2 stops25h 38m

$1,279

PortlandChiang Mai

PDX - CNX

PDXCNX

Portland

Mon 8/31

5:41 pm-1:45 pm

3 stops30h 04m

Chiang Mai

Sat 9/5

11:20 am-11:55 pm

2 stops26h 35m

$1,295

PortlandChiang Mai

PDX - CNX

PDXCNX

Portland

Mon 8/31

5:38 pm-10:25 am

2 stops50h 47m

Chiang Mai

Sat 9/5

1:40 pm-9:56 am

3 stops34h 16m

$1,302

PortlandChiang Mai

PDX - CNX

PDXCNX

Portland

Mon 8/31

7:53 pm-10:25 am

2 stops24h 32m

Chiang Mai

Sat 9/5

1:40 pm-9:56 am

3 stops34h 16m

$1,318

PortlandChiang Mai

PDX - CNX

PDXCNX

Portland

Thu 11/5

6:30 am-10:55 pm

2 stops25h 25m

Chiang Mai

Sun 11/8

12:15 am-1:18 pm

2 stops28h 03m

$1,347

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 15 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?

Qatar Airways 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 51m

Direct flights

None
The fastest flight from Portland to Chiang Mai takes 22h 51m
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 51m.

  • 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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