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Chiang Mai

$471+ 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 10/28. Fares are subject to change and may not be available on all flights or dates of travel.
PDX — CNX
Nov 22 — Nov 291
Sat 11/22
Sat 11/29
1 adult, Economy
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Cheap 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 October 23, 2025.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$845
(oojo)

One-way from

$471
(oojo)

Popular in

December

Cheapest in

November

Average price

$1,023
Provider with most accurate pricing for Portland-Chiang Mai flight deals.
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Provider most trusted by Cheapflights users for Portland-Chiang Mai flights.
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From Portland to Chiang Mai
Search Deals
One-way flight from Portland to Chiang Mai
Search Deals
Highest demand for flights based on searches. 16% potential increase in price ($265 potential increase over avg. RT price).
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Cheapest flight prices on average. 13% potential price decrease ($156 potential savings vs. average RT price).
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Average for round-trip flights in October 2025
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Find 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 October 23, 2025.

This oojo deal was found by Cheapflights users on 10/21. 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 oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 11/167:30 amPDX - CNX
2 stops35h 55mChina Airlines
Wed 12/311:25 amCNX - PDX
2 stops37h 25mChina Airlines
Deal found 10/21$874
This oojo deal was found by Cheapflights users on 10/21. 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 oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 10/273:29 pmPDX - CNX
2 stops28h 56mChina Airlines
Wed 11/1911:25 amCNX - PDX
2 stops24h 25mChina Airlines
Deal found 10/21$888
This oojo deal was found by Cheapflights users on 10/21. 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 oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 11/102:30 pmPDX - CNX
2 stops28h 55mChina Airlines
Wed 12/311:25 amCNX - PDX
2 stops37h 25mChina Airlines
Deal found 10/21$899
This Delta deal was found by Cheapflights users on 10/22. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 11/197:15 amPDX - CNX
2 stops24h 40mDelta
Tue 12/212:15 amCNX - PDX
2 stops37h 25mDelta
Deal found 10/22$928
This Korean Air deal was found by Cheapflights users on 10/22. 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 Korean Air is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 11/246:29 amPDX - CNX
2 stops25h 26mKorean Air
Tue 12/212:15 amCNX - PDX
2 stops33h 35mKorean Air
Deal found 10/22$933
This Korean Air deal was found by Cheapflights users on 10/22. 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 Korean Air is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 11/235:17 pmPDX - CNX
2 stops38h 38mKorean Air
Tue 12/212:15 amCNX - PDX
2 stops33h 35mKorean Air
Deal found 10/22$940
This Delta deal was found by Cheapflights users on 10/22. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 11/195:30 amPDX - CNX
2 stops26h 25mDelta
Thu 11/2712:15 amCNX - PDX
2 stops49h 40mDelta
Deal found 10/22$974
This Trip.com deal was found by Cheapflights users on 10/22. 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 Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 11/55:30 pmPDX - CNX
3 stops37h 10mMultiple Airlines
Sat 11/810:50 pmCNX - PDX
3 stops36h 47mMultiple Airlines
Deal found 10/22$981
This Delta deal was found by Cheapflights users on 10/22. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 11/195:30 amPDX - CNX
2 stops26h 25mDelta
Sat 11/2212:15 amCNX - PDX
2 stops38h 59mDelta
Deal found 10/22$996

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 October 23, 2025.
Use the filters below to find and compare flights from Portland to Chiang Mai that are best for you.

Fly from

Portland

Fly to

Chiang Mai

Route

Depart

Return

Price

PortlandChiang Mai

PDX - CNX

PDXCNX

Portland

Wed 1/7

7:14 am-10:25 am

2 stops36h 11m

Chiang Mai

Wed 2/11

11:25 am-11:32 pm

2 stops27h 07m

$853

PortlandChiang Mai

PDX - CNX

PDXCNX

Portland

Wed 11/19

7:15 am-10:55 pm

2 stops24h 40m

Chiang Mai

Wed 11/26

12:15 am-10:40 pm

2 stops37h 25m

$928

PortlandChiang Mai

PDX - CNX

PDXCNX

Portland

Wed 11/19

7:15 am-10:55 pm

2 stops24h 40m

Chiang Mai

Tue 12/2

12:15 am-10:40 pm

2 stops37h 25m

$928

PortlandChiang Mai

PDX - CNX

PDXCNX

Portland

Tue 11/25

7:15 am-10:55 pm

2 stops24h 40m

Chiang Mai

Tue 12/2

12:15 am-1:14 pm

2 stops27h 59m

$933

PortlandChiang Mai

PDX - CNX

PDXCNX

Portland

Sun 11/23

5:17 pm-10:55 pm

2 stops38h 38m

Chiang Mai

Tue 12/2

12:15 am-6:50 pm

2 stops33h 35m

$940

PortlandChiang Mai

PDX - CNX

PDXCNX

Portland

Thu 1/15

5:10 pm-10:55 pm

2 stops38h 45m

Chiang Mai

Mon 2/23

12:15 am-7:29 pm

2 stops34h 14m

$981

PortlandChiang Mai

PDX - CNX

PDXCNX

Portland

Wed 11/19

5:30 am-10:55 pm

2 stops26h 25m

Chiang Mai

Sat 11/22

12:15 am-12:14 am

2 stops38h 59m

$996

PortlandChiang Mai

PDX - CNX

PDXCNX

Portland

Wed 11/19

5:30 am-10:55 pm

2 stops26h 25m

Chiang Mai

Mon 12/1

12:15 am-12:16 am

2 stops39h 01m

$1,008

PortlandChiang Mai

PDX - CNX

PDXCNX

Portland

Wed 1/14

5:10 pm-10:55 pm

2 stops38h 45m

Chiang Mai

Wed 2/25

12:15 am-4:15 pm

2 stops31h 00m

$1,013

PortlandChiang Mai

PDX - CNX

PDXCNX

Portland

Wed 1/14

5:10 pm-10:55 pm

2 stops38h 45m

Chiang Mai

Mon 2/23

12:15 am-4:15 pm

2 stops31h 00m

$1,013

Flights are sorted by cheapest round-trip flights first.

Deals found on 10/22

Showing 1-10 of 18 results
1
2

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 October.
ProviderPrice AccuracyTrust Score*
FlightHubPrice Accuracy3 starsTrust Score*3 stars
OvagoPrice Accuracy2 starsTrust Score*2 stars
eDreamsPrice 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

What is the cheapest time of day to fly from PDX to CNX?

Find hourly flight availability from Portland to Chiang Mai. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated October 23, 2025.

It’s typically best to fly out from Portland to Chiang Mai in the morning. Doing so could potentially save you 41% on the flight price compared to flying at noon, which is usually more expensive.

Reviews of airlines servicing Chiang Mai

Get insights into the airlines that provide service to Chiang Mai. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to Chiang Mai. Reviews last updated October 23, 2025.
See what other customers who have flown with EVA Air from Portland to Chiang Mai have to say. You can also see how each airline compares in terms of entertainment options, comfort, food, crew/service, and boarding process.
EVA Air
8.4
Very good
1,255 reviews

Entertainment

8.0

Boarding

8.4

Crew

8.6

Food

8.1

Comfort

8.3

Overall

8.4

Reviews

1 / 20
6.0
Good

Anonymous,Aug 2025

BKK - TPE

I bought tickets for myself and my friend and had to argue with the checkin person to get our seats together for the return flights I purchased the tickets together weeks ahead of time and did not expect to have to ask for a supervisor to sit together very disappointed in booking through kayak
EVA Air
8.4
Very good
1,255 reviews
EVA Air
8.4
Very good
1,255 reviews

Entertainment

8.0

Boarding

8.4

Crew

8.6

Food

8.1

Comfort

8.3

Overall

8.4

Reviews

1 / 20
6.0
Good

Anonymous,Aug 2025

BKK - TPE

I bought tickets for myself and my friend and had to argue with the checkin person to get our seats together for the return flights I purchased the tickets together weeks ahead of time and did not expect to have to ask for a supervisor to sit together very disappointed in booking through kayak

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.

  • How long is the flight from Portland to Chiang Mai?

    A quick flight from Portland to Chiang Mai can take about 24h 40m. China Airlines provides one of the quickest options available for as low as $928. There are 7279 mi between Portland and Chiang Mai. Both multi-stop and nonstop flights can be found to your destination and back.

  • What is the cheapest airline to fly from Portland to Chiang Mai round-trip?

    Our cheapest airline available from Portland to Chiang Mai is EVA Air. Our recent data shows that you can find tickets from as low as $975 on this airline. Users have found that EVA Air is 25% cheaper than the other options available to this destination.

  • 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.

See more FAQs

Browse thousands of different options on Cheapflights for your next trip

Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.

Top airline flying from Portland to Chiang Mai

Discover the top airline that operate flights from Portland to Chiang Mai. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated October 23, 2025.
AirlineCheapestAverageFlexibilityOn-time
EVA AirCheapest$975Average$1,104FlexibilityNo cancel feeOn-time74%

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