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Cheap flights from Portland to Chiang Mai from $537

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 11/3. 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
5:56 pm - 1:25 pm-
53h 29m
Multiple Airlines Logo
2:55 pm - 5:11 pm-
64h 16m
$902Multiple Airlines
Fri, Aug 28 - Fri, Sep 4
Multiple Airlines Logo
12:20 pm - 1:25 pm-
59h 05m
Multiple Airlines Logo
2:55 pm - 5:11 pm-
64h 16m
$910Multiple Airlines
Fri, Aug 28 - Fri, Sep 4
Multiple Airlines Logo
10:48 am - 9:50 pm-
45h 02m
Multiple Airlines Logo
11:05 pm - 1:30 pm-
29h 25m
$916Multiple Airlines
Mon, Oct 26 - Tue, Nov 3
Multiple Airlines Logo
7:03 am - 2:20 pm-
41h 17m
Multiple Airlines Logo
3:35 pm - 4:34 pm-
39h 59m
$921Multiple Airlines
Tue, Oct 27 - Wed, Nov 4
Korean Air Logo
7:59 pm - 10:55 pm-
36h 56m
Korean Air Logo
12:15 am - 10:19 pm-
37h 04m
$967Korean Air
Mon, Oct 26 - Tue, Nov 3
Multiple Airlines Logo
6:18 pm - 2:20 pm-
54h 02m
Multiple Airlines Logo
3:35 pm - 4:35 pm-
40h 00m
$988Multiple Airlines
Sun, Oct 25 - Tue, Nov 3
Korean Air Logo
9:31 am - 10:55 pm-
23h 24m
Korean Air Logo
12:15 am - 10:19 pm-
37h 04m
$997Korean Air
Tue, Oct 27 - Mon, Nov 2
Korean Air Logo
7:10 am - 10:55 pm-
24h 45m
Korean Air Logo
12:15 am - 7:28 pm-
34h 13m
$997Korean Air
Thu, Jan 21 - Tue, Feb 16
Korean Air Logo
5:10 pm - 10:55 pm-
38h 45m
Korean Air Logo
12:15 am - 1:18 pm-
28h 03m
$997Korean Air
Mon, Jan 18 - Mon, Feb 15
Korean Air Logo
7:10 am - 10:55 pm-
24h 45m
Korean Air Logo
12:15 am - 1:18 pm-
28h 03m
$997Korean Air
Tue, Jan 19 - Mon, Feb 15

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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
Oct 26
PDX7:59 pmPortland
36h 56m
2 stops
CNX10:55 pmChiang Mai
Nov 3
CNX12:15 amChiang Mai
37h 04m
2 stops
PDX10:19 pmPortland
$967
Korean Air
Oct 27
PDX6:45 amPortland
26h 10m
2 stops
CNX10:55 pmChiang Mai
Nov 4
CNX12:15 amChiang Mai
37h 04m
2 stops
PDX10:19 pmPortland
$997
Korean Air
Oct 25
PDX7:59 pmPortland
36h 56m
2 stops
CNX10:55 pmChiang Mai
Nov 2
CNX12:15 amChiang Mai
31h 00m
2 stops
PDX4:15 pmPortland
$1,003

Qatar Airways flights from Portland to Chiang Mai

Our best Qatar Airways deals on Portland to Chiang Mai flight tickets
Qatar Airways
Oct 25
PDX11:03 amPortland
34h 17m
3 stops
CNX11:20 amChiang Mai
Nov 3
CNX7:45 pmChiang Mai
36h 05m
3 stops
PDX4:50 pmPortland
$1,317
Qatar Airways
Aug 17
PDX9:19 amPortland
34h 01m
3 stops
CNX9:20 amChiang Mai
Aug 22
CNX8:00 pmChiang Mai
38h 50m
3 stops
PDX8:50 pmPortland
$2,013
Qatar Airways
Aug 17
PDX9:19 amPortland
34h 01m
3 stops
CNX9:20 amChiang Mai
Aug 22
CNX8:00 pmChiang Mai
38h 50m
3 stops
PDX8:50 pmPortland
$2,112

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 4, 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

Fri 8/28

5:56 pm-1:25 pm

2 stops53h 29m

Chiang Mai

Fri 9/4

2:55 pm-5:11 pm

3 stops64h 16m

$902

PortlandChiang Mai

PDX - CNX

PDXCNX

Portland

Fri 8/28

12:20 pm-1:25 pm

3 stops59h 05m

Chiang Mai

Fri 9/4

2:55 pm-5:11 pm

3 stops64h 16m

$910

PortlandChiang Mai

PDX - CNX

PDXCNX

Portland

Mon 10/26

10:48 am-9:50 pm

2 stops45h 02m

Chiang Mai

Tue 11/3

11:05 pm-1:30 pm

2 stops29h 25m

$916

PortlandChiang Mai

PDX - CNX

PDXCNX

Portland

Tue 10/27

7:03 am-2:20 pm

2 stops41h 17m

Chiang Mai

Wed 11/4

3:35 pm-4:34 pm

2 stops39h 59m

$921

PortlandChiang Mai

PDX - CNX

PDXCNX

Portland

Mon 10/26

7:59 pm-10:55 pm

2 stops36h 56m

Chiang Mai

Tue 11/3

12:15 am-10:19 pm

2 stops37h 04m

$967

PortlandChiang Mai

PDX - CNX

PDXCNX

Portland

Sun 10/25

6:18 pm-2:20 pm

2 stops54h 02m

Chiang Mai

Tue 11/3

3:35 pm-4:35 pm

2 stops40h 00m

$988

PortlandChiang Mai

PDX - CNX

PDXCNX

Portland

Tue 10/27

9:31 am-10:55 pm

2 stops23h 24m

Chiang Mai

Mon 11/2

12:15 am-10:19 pm

2 stops37h 04m

$997

PortlandChiang Mai

PDX - CNX

PDXCNX

Portland

Thu 1/21

7:10 am-10:55 pm

2 stops24h 45m

Chiang Mai

Tue 2/16

12:15 am-7:28 pm

2 stops34h 13m

$997

PortlandChiang Mai

PDX - CNX

PDXCNX

Portland

Mon 1/18

5:10 pm-10:55 pm

2 stops38h 45m

Chiang Mai

Mon 2/15

12:15 am-1:18 pm

2 stops28h 03m

$997
Quickest round-trip

PortlandChiang Mai

PDX - CNX

PDXCNX

Portland

Tue 1/19

7:10 am-10:55 pm

2 stops24h 45m

Chiang Mai

Mon 2/15

12:15 am-1:18 pm

2 stops28h 03m

$997

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 and China Eastern are the most popular carriers 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 52m

Direct flights

None
The fastest flight from Portland to Chiang Mai takes 23h 52m
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 23h 52m.

  • 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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