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Chiang Mai

$419+ 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 4/5. Fares are subject to change and may not be available on all flights or dates of travel.
PDX — CNX
Mar 5 — Mar 121
Thu 3/5
Thu 3/12
1 adult, Economy
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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 February 3, 2026.

This SmartFares deal was found by Cheapflights users on 2/1. 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 SmartFares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 11/11:50 pm
PDX
-
CNX
2 stops29h 35m
Multiple Airlines
Wed 12/911:25 am
CNX
-
PDX
2 stops26h 08m
Multiple Airlines
Deal found 2/1$892
This China Airlines deal was found by Cheapflights users on 2/3. 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 China Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 4/257:18 pm
PDX
-
CNX
2 stops25h 02m
Multiple Airlines
Sun 5/1011:20 am
CNX
-
PDX
2 stops36h 18m
Multiple Airlines
Deal found 2/3$903
This Orbitz deal was found by Cheapflights users on 2/2. 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 Orbitz is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 4/185:49 pm
PDX
-
CNX
2 stops26h 31m
Multiple Airlines
Sat 4/2511:20 am
CNX
-
PDX
2 stops36h 18m
Multiple Airlines
Deal found 2/2$910
This Orbitz deal was found by Cheapflights users on 2/1. 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 Orbitz is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 11/13:40 pm
PDX
-
CNX
2 stops27h 45m
Multiple Airlines
Mon 11/3011:25 am
CNX
-
PDX
2 stops39h 57m
Multiple Airlines
Deal found 2/1$912
This oojo deal was found by Cheapflights users on 2/1. 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 11/13:40 pm
PDX
-
CNX
2 stops27h 45m
China Airlines
Wed 12/1611:25 am
CNX
-
PDX
2 stops37h 00m
China Airlines
Deal found 2/1$914
This oojo deal was found by Cheapflights users on 2/2. 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 2/232:47 pm
PDX
-
CNX
2 stops28h 48m
EVA Air
Tue 3/2411:50 am
CNX
-
PDX
2 stops36h 00m
EVA Air
Deal found 2/2$963
This IEagle deal was found by Cheapflights users on 2/1. 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.
Sun 11/19:50 pm
PDX
-
CNX
2 stops45h 45m
Multiple Airlines
Wed 12/162:05 pm
CNX
-
PDX
3 stops23h 28m
Multiple Airlines
Deal found 2/1$973
This KAYAK deal was found by Cheapflights users on 2/2. 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.
Mon 2/239:48 pm
PDX
-
CNX
2 stops45h 47m
Multiple Airlines
Tue 3/242:05 pm
CNX
-
PDX
3 stops23h 39m
Multiple Airlines
Deal found 2/2$1,007

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 February 3, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$910
(Orbitz)

One-way from

$419
(Kiwi.com)

Popular in

June

Cheapest in

November

Average price

$1,068
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. 20% potential increase in price ($286 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 5% potential price decrease ($57 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in February 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 February 3, 2026.
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

Sat 4/25

7:18 pm-10:20 am

2 stops25h 02m

Chiang Mai

Sun 5/10

11:20 am-9:38 am

2 stops36h 18m

$903

PortlandChiang Mai

PDX - CNX

PDXCNX

Portland

Sat 4/18

5:49 pm-10:20 am

2 stops26h 31m

Chiang Mai

Sat 4/25

11:20 am-9:38 am

2 stops36h 18m

$910

PortlandChiang Mai

PDX - CNX

PDXCNX

Portland

Mon 2/23

2:47 pm-10:35 am

2 stops28h 48m

Chiang Mai

Tue 3/24

11:50 am-9:50 am

2 stops36h 00m

$963

PortlandChiang Mai

PDX - CNX

PDXCNX

Portland

Mon 2/23

9:48 pm-10:35 am

2 stops45h 47m

Chiang Mai

Tue 3/24

2:05 pm-11:44 pm

3 stops23h 39m

$1,007

PortlandChiang Mai

PDX - CNX

PDXCNX

Portland

Thu 2/26

7:05 am-10:35 am

2 stops36h 30m

Chiang Mai

Sun 3/8

11:50 am-7:49 am

2 stops34h 59m

$1,028

PortlandChiang Mai

PDX - CNX

PDXCNX

Portland

Thu 2/26

9:48 pm-10:35 am

2 stops45h 47m

Chiang Mai

Sun 3/8

7:45 pm-11:44 pm

3 stops41h 59m

$1,049

PortlandChiang Mai

PDX - CNX

PDXCNX

Portland

Sun 4/5

5:14 pm-9:45 am

2 stops50h 31m

$419

PortlandChiang Mai

PDX - CNX

PDXCNX

Portland

Thu 4/2

5:19 pm-9:50 am

3 stops50h 31m

$420

PortlandChiang Mai

PDX - CNX

PDXCNX

Portland

Tue 3/31

5:49 pm-4:55 pm

3 stops33h 06m

$446

PortlandChiang Mai

PDX - CNX

PDXCNX

Portland

Wed 4/1

5:49 pm-5:55 pm

3 stops34h 06m

$460

Flights are sorted by cheapest round-trip flights first.

Deals found on 2/2

Showing 1-10 of 15 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 February.
ProviderPrice AccuracyTrust Score*
FlightHubPrice Accuracy3 starsTrust Score*3 stars
OvagoPrice Accuracy2 starsTrust Score*3 stars
AranGrantPrice Accuracy2 starsTrust Score*2 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?

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 February 3, 2026.
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
8.5
Very good
1,342 reviews

Food

8.1

Overall

8.5

Boarding

8.4

Comfort

8.3

Entertainment

8.0

Crew

8.6

Reviews

1 / 20
8.0
Excellent

Jolene,Jan 2026

SGN - TPE

Everything was good. I asked for aisle seating as I must stretch my leg out because of back and pelvis issues. Sometimes I don't always get it. But I did for all 3 of my flights for my destination. It was very nice.
EVA Air
8.5
Very good
1,342 reviews
EVA Air
8.5
Very good
1,342 reviews

Food

8.1

Overall

8.5

Boarding

8.4

Comfort

8.3

Entertainment

8.0

Crew

8.6

Reviews

1 / 20
8.0
Excellent

Jolene,Jan 2026

SGN - TPE

Everything was good. I asked for aisle seating as I must stretch my leg out because of back and pelvis issues. Sometimes I don't always get it. But I did for all 3 of my flights for my destination. It was very nice.

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 28h 48m. EVA Air provides one of the quickest options available for as low as $963. There are 7279 mi between Portland and Chiang Mai.

  • 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 $963 on this airline. Users have found that EVA Air is 15% 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

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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 February 3, 2026.
AirlineCheapestAverageFlexibilityOn-time
EVA AirCheapest$963Average$1,068FlexibilityNo cancel feeOn-time74%

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