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Chiang Mai

$785+ Cheap flights from Portland (PDX) to Chiang Mai (CNX)

This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 5/18. Fares are subject to change and may not be available on all flights or dates of travel.
PDX — CNX
Jun 7 — Jun 141
Sun 6/7
Sun 6/14
1 adult, Economy
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1. Tell us where you want to go

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Cheap flight deals from Portland to Chiang Mai

Cheapest flights from Portland to Chiang Mai
Explore the most affordable flight options available from Portland to Chiang Mai. Find the lowest fares from popular airlines and budget airlines, with prices last updated on May 8, 2026.

This BusinessClass deal was found by Cheapflights users on 5/6. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure BusinessClass is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 11/47:00 am
PDX
-
CNX
2 stops40h 20m
Multiple Airlines
Wed 11/113:35 pm
CNX
-
PDX
2 stops37h 15m
Multiple Airlines
Deal found 5/6$897
This Justfly.com deal was found by Cheapflights users on 5/6. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Justfly.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 11/39:30 pm
PDX
-
CNX
2 stops49h 50m
Multiple Airlines
Tue 11/103:35 pm
CNX
-
PDX
2 stops39h 52m
Multiple Airlines
Deal found 5/6$966
This Justfly.com deal was found by Cheapflights users on 5/5. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Justfly.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 11/47:00 am
PDX
-
CNX
2 stops40h 20m
Multiple Airlines
Sat 11/143:35 pm
CNX
-
PDX
2 stops57h 59m
Multiple Airlines
Deal found 5/5$1,010
This KAYAK deal was found by Cheapflights users on 5/6. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure KAYAK is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 11/57:00 am
PDX
-
CNX
2 stops40h 20m
Multiple Airlines
Tue 11/103:35 pm
CNX
-
PDX
2 stops43h 56m
Multiple Airlines
Deal found 5/6$1,050
This KAYAK deal was found by Cheapflights users on 5/6. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure KAYAK is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 11/39:30 pm
PDX
-
CNX
2 stops49h 50m
Multiple Airlines
Wed 11/113:35 pm
CNX
-
PDX
2 stops47h 19m
Multiple Airlines
Deal found 5/6$1,058
This Justfly.com deal was found by Cheapflights users on 5/5. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Justfly.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 8/317:00 am
PDX
-
CNX
2 stops40h 25m
Multiple Airlines
Sat 9/52:55 pm
CNX
-
PDX
2 stops46h 29m
Multiple Airlines
Deal found 5/5$1,079
This Justfly.com deal was found by Cheapflights users on 5/6. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Justfly.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/19:29 pm
PDX
-
CNX
2 stops22h 51m
Multiple Airlines
Thu 10/2911:25 am
CNX
-
PDX
2 stops25h 37m
Multiple Airlines
Deal found 5/6$1,111
This IEagle deal was found by Cheapflights users on 5/5. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure IEagle is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/19:35 pm
PDX
-
CNX
2 stops46h 50m
Multiple Airlines
Thu 9/2411:35 am
CNX
-
PDX
2 stops23h 15m
Multiple Airlines
Deal found 5/5$1,134
This FlightHub deal was found by Cheapflights users on 5/5. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 5/107:00 am
PDX
-
CNX
2 stops37h 25m
Multiple Airlines
Tue 5/2611:35 am
CNX
-
PDX
2 stops40h 15m
Multiple Airlines
Deal found 5/5$1,171

Find flight deals from Portland to Chiang Mai

Discover tips and strategies to find the most affordable flight options for your journey from Portland (PDX) to Chiang Mai (CNX). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated May 8, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$897
(BusinessClass)

One-way from

$785
(FlightHub)

Popular in

June

Cheapest in

November

Average price

$994
Provider with most accurate pricing for Portland-Chiang Mai flight deals.
Search Deals
Provider most trusted by Cheapflights users for Portland-Chiang Mai flights.
Search Deals
From Portland to Chiang Mai
Search Deals
One-way flight from Portland to Chiang Mai
Search Deals
Highest demand for flights based on searches. 17% potential increase in price ($233 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 8% potential price decrease ($86 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in May 2026
Search Deals

Cheapflights 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, Cheapflights users made 2,558,603 searches. Data last updated May 8, 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 - CNX

PDXCNX

Portland

Mon 5/18

5:59 pm-10:25 am

2 stops26h 26m

Chiang Mai

Thu 6/18

11:35 am-10:25 pm

2 stops24h 50m

$1,298

PortlandChiang Mai

PDX - CNX

PDXCNX

Portland

Wed 7/15

10:42 am-2:50 pm

3 stops38h 08m

Chiang Mai

Wed 7/29

11:35 am-11:30 pm

2 stops25h 55m

$1,713

PortlandChiang Mai

PDX - CNX

PDXCNX

Portland

Sun 6/21

3:30 pm-8:45 am

3 stops51h 15m

Chiang Mai

Sun 6/28

9:10 pm-9:31 am

2 stops26h 21m

$1,722
Cheapest one-way

PortlandChiang Mai

PDX - CNX

PDXCNX

Portland

Mon 5/18

7:00 am-10:25 am

2 stops37h 25m

$785
Quickest one-way

PortlandChiang Mai

PDX - CNX

PDXCNX

Portland

Tue 5/19

7:40 pm-7:10 pm

2 stops33h 30m

$855

PortlandChiang Mai

PDX - CNX

PDXCNX

Portland

Wed 6/17

9:48 pm-7:25 am

3 stops43h 37m

$962

Flights are sorted by cheapest round-trip flights first.

Deals found on 5/6

Sorted by cheapest first

Compare providers for flights from Portland to Chiang Mai

Provider information is updated monthly. Please note that these providers often have deals for this flight, but the availability may vary on a day-by-day basis on Cheapflights.
Use the table below to compare price accuracy, trust ratings, and cancellation policies for each provider offering flight deals from Portland to Chiang Mai in May.
ProviderPrice AccuracyTrust Score*
FlightHubPrice Accuracy3 starsTrust Score*3 stars
OvagoPrice Accuracy3 starsTrust Score*3 stars
AranGrantPrice Accuracy3 starsTrust Score*3 stars

*The Trust Score is based on feedback from users after their booking experience. It measures overall satisfaction, helping us identify issues like hidden fees, problems during the ticketing process, and the quality of customer service. This score is our best indicator of the provider's quality and reliability.

  • Most accurate provider: When it comes to deals on Portland-Chiang Mai flights, users find the pricing of FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on Portland-Chiang Mai flight deals on Cheapflights vs. FlightHub >95% of the time. Price accuracy is based on data collected from Portland-Chiang Mai flight searches over the past month and is updated monthly.
  • Most trusted provider: When it comes to deals on Portland-Chiang Mai flights, Cheapflights users trust FlightHub the most. FlightHub has received a user feedback score of 3 out of 3 stars (3 being the best), meaning they have been trusted the most by Cheapflights users looking for Portland-Chiang Mai flight deals. Provider user feedback score is based on Cheapflights searches over the past month and is updated monthly.

Best time to book a flight from Portland to Chiang Mai

Have a flexible travel schedule? Discover the best time to fly to Chiang Mai from Portland with our price prediction graph.
Estimated round-trip price
Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.

Cheapflights Insights

Everything you need to know about your flight from Portland to Chiang Mai

How much does it cost to fly round-trip from Portland to Chiang Mai?

Related info for your journey

Find useful and relevant information for your journey from Portland to Chiang Mai. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • Can I find deals for flights from Portland to Chiang Mai that include hotel bookings?

    Yes. In addition to deals on Portland to Chiang Mai flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from Portland to Chiang Mai?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Portland to Chiang Mai.

  • Can I find deals for business class flights from Portland to Chiang Mai?

    Yes. Cheapflights offers flight deals from Portland to Chiang Mai by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

Browse thousands of different options on Cheapflights for your next trip

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