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Chiang Mai

$469+ 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 8/18. Fares are subject to change and may not be available on all flights or dates of travel.
PDX — CNX
Jul 8 — Jul 151
Tue 7/8
Tue 7/15
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 July 3, 2025.

Round-trip from

$956
(oojo)

One-way from

$469
(Kiwi.com)

Popular in

September

Cheapest in

May

Average price

$1,604
From Portland to Chiang Mai
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One-way flight from Portland to Chiang Mai
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Highest demand for flights based on searches. 1% potential increase in price ($17 potential increase over avg. RT price).
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Cheapest flight prices on average. 4% potential price decrease ($54 potential savings vs. average RT price).
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Average for round-trip flights in July 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 July 3, 2025.

This oojo deal was found by Cheapflights users on 7/3. 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 oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 11/105:30 pmPDX - CNX
2 stops25h 55mChina Airlines
Wed 12/311:25 amCNX - PDX
2 stops26h 54mChina Airlines
Deal found 7/3$895
This Korean Air deal was found by Cheapflights users on 7/1. 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 Korean Air is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 11/106:30 amPDX - CNX
2 stops25h 35mKorean Air
Tue 12/212:15 amCNX - PDX
2 stops30h 57mKorean Air
Deal found 7/1$934
This oojo deal was found by Cheapflights users on 7/1. 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.
Tue 10/217:41 pmPDX - CNX
2 stops24h 44mEVA Air
Wed 3/1111:50 amCNX - PDX
2 stops34h 04mEVA Air
Deal found 7/1$999
This Gurufare deal was found by Cheapflights users on 7/3. 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 Gurufare is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/316:30 amPDX - CNX
3 stops42h 55mMultiple Airlines
Wed 11/193:35 pmCNX - PDX
2 stops40h 15mMultiple Airlines
Deal found 7/3$1,058
This Delta deal was found by Cheapflights users on 7/2. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 9/1212:45 amPDX - CNX
2 stops31h 10mDelta
Sun 9/2111:15 pmCNX - PDX
2 stops31h 53mDelta
Deal found 7/2$1,226
This Gurufare deal was found by Cheapflights users on 7/3. 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 Gurufare is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/316:30 amPDX - CNX
3 stops42h 55mChina Eastern
Wed 11/194:25 pmCNX - PDX
3 stops38h 47mChina Eastern
Deal found 7/3$1,358
This Qatar Airways deal was found by Cheapflights users on 7/3. 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 Qatar Airways is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 10/41:25 pmPDX - CNX
3 stops31h 50mQatar Airways
Mon 10/138:00 pmCNX - PDX
3 stops40h 43mQatar Airways
Deal found 7/3$1,375

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 July 3, 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

Mon 11/10

5:30 pm-10:25 am

2 stops25h 55m

Chiang Mai

Wed 12/3

11:25 am-11:19 pm

2 stops26h 54m

$895

PortlandChiang Mai

PDX - CNX

PDXCNX

Portland

Mon 11/10

6:30 am-11:05 pm

2 stops25h 35m

Chiang Mai

Tue 12/2

12:15 am-4:12 pm

2 stops30h 57m

$934

PortlandChiang Mai

PDX - CNX

PDXCNX

Portland

Tue 10/21

7:41 pm-10:25 am

2 stops24h 44m

Chiang Mai

Wed 3/11

11:50 am-7:54 am

2 stops34h 04m

$999

PortlandChiang Mai

PDX - CNX

PDXCNX

Portland

Fri 10/31

6:30 am-3:25 pm

3 stops42h 55m

Chiang Mai

Wed 11/19

3:35 pm-4:50 pm

2 stops40h 15m

$1,058

PortlandChiang Mai

PDX - CNX

PDXCNX

Portland

Fri 9/12

12:45 am-9:55 pm

2 stops31h 10m

Chiang Mai

Sun 9/21

11:15 pm-5:08 pm

2 stops31h 53m

$1,226

PortlandChiang Mai

PDX - CNX

PDXCNX

Portland

Fri 10/31

6:30 am-3:25 pm

3 stops42h 55m

Chiang Mai

Wed 11/19

4:25 pm-4:12 pm

3 stops38h 47m

$1,358

PortlandChiang Mai

PDX - CNX

PDXCNX

Portland

Sat 10/4

1:25 pm-11:15 am

3 stops31h 50m

Chiang Mai

Mon 10/13

8:00 pm-10:43 pm

3 stops40h 43m

$1,375

PortlandChiang Mai

PDX - CNX

PDXCNX

Portland

Mon 8/18

1:40 pm-9:55 pm

2 stops42h 15m

$469

PortlandChiang Mai

PDX - CNX

PDXCNX

Portland

Sun 8/17

9:59 pm-4:20 pm

2 stops28h 21m

$504

PortlandChiang Mai

PDX - CNX

PDXCNX

Portland

Sat 8/23

9:30 pm-10:20 am

2 stops46h 50m

$561

Flights are sorted by cheapest round-trip flights first.

Deals found on 7/1

Showing 1-10 of 12 results
1
2

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 month to book a flight from Portland to Chiang Mai?

Currently, April is the cheapest month in which you can book a flight from Portland to Chiang Mai (average of $1,010). Flying from Portland to Chiang Mai in December is currently the most expensive (average of $1,639). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

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 July 3, 2025.

It’s typically best to fly out from Portland to Chiang Mai in the morning. Doing so could potentially save you 42% 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 July 3, 2025.
See what other customers who have flown with STARLUX Airlines, EVA Air, and Korean 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.
STARLUX Airlines
9.1
Wonderful
189 reviews

Comfort

9.0

Food

8.9

Overall

9.1

Crew

9.3

Entertainment

9.0

Boarding

9.0

Reviews

1 / 7
10.0
Excellent

ltulagan,Jun 2025

TPE - SEA

The whole trip was very pleasant from the crew, the food, the amenities during the flight.
STARLUX Airlines
9.1
Wonderful
189 reviews
STARLUX Airlines
9.1
Wonderful
189 reviews

Comfort

9.0

Food

8.9

Overall

9.1

Crew

9.3

Entertainment

9.0

Boarding

9.0

Reviews

1 / 7
10.0
Excellent

ltulagan,Jun 2025

TPE - SEA

The whole trip was very pleasant from the crew, the food, the amenities during the flight.
EVA Air
8.4
Very good
1,215 reviews
STARLUX Airlines
9.1
Wonderful
189 reviews

Comfort

9.0

Food

8.9

Overall

9.1

Crew

9.3

Entertainment

9.0

Boarding

9.0

Reviews

1 / 7
10.0
Excellent

ltulagan,Jun 2025

TPE - SEA

The whole trip was very pleasant from the crew, the food, the amenities during the flight.
Korean Air
8.4
Very good
1,101 reviews
STARLUX Airlines
9.1
Wonderful
189 reviews

Comfort

9.0

Food

8.9

Overall

9.1

Crew

9.3

Entertainment

9.0

Boarding

9.0

Reviews

1 / 7
10.0
Excellent

ltulagan,Jun 2025

TPE - SEA

The whole trip was very pleasant from the crew, the food, the amenities during the flight.
China Airlines
8.3
Very good
744 reviews
STARLUX Airlines
9.1
Wonderful
189 reviews

Comfort

9.0

Food

8.9

Overall

9.1

Crew

9.3

Entertainment

9.0

Boarding

9.0

Reviews

1 / 7
10.0
Excellent

ltulagan,Jun 2025

TPE - SEA

The whole trip was very pleasant from the crew, the food, the amenities during the flight.
Asiana Airlines
8.2
Very good
452 reviews
STARLUX Airlines
9.1
Wonderful
189 reviews

Comfort

9.0

Food

8.9

Overall

9.1

Crew

9.3

Entertainment

9.0

Boarding

9.0

Reviews

1 / 7
10.0
Excellent

ltulagan,Jun 2025

TPE - SEA

The whole trip was very pleasant from the crew, the food, the amenities during the flight.

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 are the cheapest airlines flying from Portland to Chiang Mai round-trip?

    Our cheapest airline available from Portland to Chiang Mai is China Airlines. Our recent data shows that you can find tickets from as low as $956 on this airline. Additional options worth looking into are Delta and Korean Air, starting at $1,226 and $1,289 round-trip. Users have found that China Airlines is 28% cheaper than the other options available to this destination.

  • What are the cheapest airlines to fly from Portland to Chiang Mai one-way?

    The cheapest airline one-way is STARLUX Airlines, with whom users have recently found tickets for as low as $504. However, be on the lookout for offers from China Airlines and Korean Air, as they are both options that can get you from Portland to Chiang Mai for a low price.

  • 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.

  • What is the cheapest month to book a flight from Portland to Chiang Mai?

    Currently, April is the cheapest month in which you can book a flight from Portland to Chiang Mai (average of $1,010). Flying from Portland to Chiang Mai in December is currently the most expensive (average of $1,639). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

See more FAQs

Browse thousands of different options on Cheapflights for your next trip

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Top 3 airlines flying from Portland to Chiang Mai

Discover the top 3 airlines 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 July 3, 2025.
AirlineCheapestAverageFlexibilityOn-time
Korean AirCheapest$789Average$1,162FlexibilityNo cancel feeOn-time81%
DeltaCheapest$790Average$1,279FlexibilityNo cancel feeOn-timeN/A
EVA AirCheapest$1,030Average$1,187FlexibilityNo cancel feeOn-time74%

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