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Chiang Mai

$509+ 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 5/5. Fares are subject to change and may not be available on all flights or dates of travel.
PDX — CNX
Apr 28 — May 51
Tue 4/28
Tue 5/5
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 March 29, 2026.

This FlightHub deal was found by Cheapflights users on 3/24. 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.
Mon 8/315:55 pm
PDX
-
CNX
2 stops26h 25m
Multiple Airlines
Mon 9/711:20 am
CNX
-
PDX
2 stops36h 26m
Multiple Airlines
Deal found 3/24$843
This FlightHub deal was found by Cheapflights users on 3/25. 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.
Mon 8/312:30 pm
PDX
-
CNX
2 stops29h 50m
Multiple Airlines
Sat 9/511:20 am
CNX
-
PDX
2 stops37h 05m
Multiple Airlines
Deal found 3/25$860
This oojo deal was found by Cheapflights users on 3/24. 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 8/315:55 pm
PDX
-
CNX
2 stops26h 25m
China Airlines
Sun 9/611:20 am
CNX
-
PDX
2 stops36h 26m
China Airlines
Deal found 3/24$913
This FlightHub deal was found by Cheapflights users on 3/24. 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.
Tue 9/15:55 pm
PDX
-
CNX
2 stops26h 25m
Multiple Airlines
Sun 9/611:20 am
CNX
-
PDX
2 stops26h 55m
Multiple Airlines
Deal found 3/24$944
This FlightHub deal was found by Cheapflights users on 3/24. 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 8/305:35 pm
PDX
-
CNX
2 stops26h 50m
Multiple Airlines
Mon 9/711:35 am
CNX
-
PDX
2 stops23h 13m
Multiple Airlines
Deal found 3/24$979
This FlightHub deal was found by Cheapflights users on 3/27. 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 4/2610:51 am
PDX
-
CNX
2 stops33h 34m
Multiple Airlines
Sun 5/311:35 am
CNX
-
PDX
2 stops42h 47m
Multiple Airlines
Deal found 3/27$995
This FlightHub deal was found by Cheapflights users on 3/27. 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.
Sat 4/255:51 pm
PDX
-
CNX
2 stops26h 34m
Multiple Airlines
Sun 5/1011:35 am
CNX
-
PDX
2 stops42h 47m
Multiple Airlines
Deal found 3/27$1,005
This FlightHub deal was found by Cheapflights users on 3/24. 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 8/307:40 pm
PDX
-
CNX
2 stops24h 45m
Multiple Airlines
Sat 9/511:35 am
CNX
-
PDX
2 stops26h 40m
Multiple Airlines
Deal found 3/24$1,017
This FlightHub deal was found by Cheapflights users on 3/26. 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.
Mon 5/187:00 am
PDX
-
CNX
2 stops40h 25m
Multiple Airlines
Sun 5/312:55 pm
CNX
-
PDX
2 stops46h 49m
Multiple Airlines
Deal found 3/26$1,023
This IEagle deal was found by Cheapflights users on 3/24. 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.
Mon 8/315:55 pm
PDX
-
CNX
2 stops26h 30m
Multiple Airlines
Sun 9/68:00 pm
CNX
-
PDX
3 stops31h 50m
Multiple Airlines
Deal found 3/24$1,035

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 March 29, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$843
(FlightHub)

One-way from

$509
(SmartFares)

Popular in

June

Cheapest in

November
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. 14% potential increase in price ($179 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 5% potential price decrease ($61 potential savings vs. average RT price).
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 March 29, 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

Sun 4/26

10:51 am-10:25 am

2 stops33h 34m

Chiang Mai

Sun 5/3

11:35 am-4:22 pm

2 stops42h 47m

$995

PortlandChiang Mai

PDX - CNX

PDXCNX

Portland

Sat 4/25

1:52 pm-10:25 am

2 stops30h 33m

Chiang Mai

Sun 5/10

11:35 am-1:47 pm

2 stops40h 12m

$1,005

PortlandChiang Mai

PDX - CNX

PDXCNX

Portland

Mon 5/18

7:00 am-1:25 pm

2 stops40h 25m

Chiang Mai

Sun 5/31

2:55 pm-11:44 pm

2 stops46h 49m

$1,023
Quickest round-trip

PortlandChiang Mai

PDX - CNX

PDXCNX

Portland

Wed 4/22

2:50 pm-10:20 am

2 stops29h 30m

Chiang Mai

Wed 4/29

11:20 am-9:30 am

2 stops36h 10m

$1,044

PortlandChiang Mai

PDX - CNX

PDXCNX

Portland

Sun 4/26

1:52 pm-7:10 pm

3 stops39h 18m

Chiang Mai

Sun 5/3

8:00 pm-7:34 pm

3 stops37h 34m

$1,411

PortlandChiang Mai

PDX - CNX

PDXCNX

Portland

Sat 4/25

1:52 pm-11:15 am

3 stops31h 23m

Chiang Mai

Sun 5/10

8:00 pm-7:34 pm

3 stops37h 34m

$1,451
Cheapest one-way

PortlandChiang Mai

PDX - CNX

PDXCNX

Portland

Sat 4/25

1:52 pm-10:20 am

2 stops30h 28m

$542

PortlandChiang Mai

PDX - CNX

PDXCNX

Portland

Sun 4/26

10:51 am-10:25 am

2 stops33h 34m

$542

PortlandChiang Mai

PDX - CNX

PDXCNX

Portland

Wed 5/6

5:51 pm-4:55 pm

3 stops57h 04m

$573

PortlandChiang Mai

PDX - CNX

PDXCNX

Portland

Mon 5/18

7:00 am-1:25 pm

2 stops40h 25m

$579

Flights are sorted by cheapest round-trip flights first.

Deals found on 3/26

Showing 1-10 of 13 resultsSorted by cheapest first
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 March.
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.

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 March 29, 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
1,391 reviews

Crew

8.7

Food

8.1

Entertainment

8.0

Boarding

8.4

Comfort

8.3

Overall

8.5

Reviews

1 / 20
10.0
Excellent

Anonymous,Mar 2026

CRK - TPE

What about midnight snacks to add? Used to have that before..
EVA Air
8.5
Very good
1,391 reviews
EVA Air
8.5
Very good
1,391 reviews

Crew

8.7

Food

8.1

Entertainment

8.0

Boarding

8.4

Comfort

8.3

Overall

8.5

Reviews

1 / 20
10.0
Excellent

Anonymous,Mar 2026

CRK - TPE

What about midnight snacks to add? Used to have that before..

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.

  • 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 12% 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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Alternative routes for Portland to Chiang Mai

See prices for flight routes from nearby airports that may be better suited for you.
Portland to Suvarnabhumi flights
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Portland to Ko Samui flights
Eugene to Chiang Mai flights
Portland to Krabi flights

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 March 29, 2026.
AirlineCheapestAverageFlexibilityOn-time
EVA AirCheapest$963Average$1,031FlexibilityNo cancel feeOn-time74%

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