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Chiang Mai

$457+ 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 8/9. Fares are subject to change and may not be available on all flights or dates of travel.
PDX — CNX
Jun 17 — Jun 241
Tue 6/17
Tue 6/24
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 June 12, 2025.

Round-trip from

$790
(Trip.com)

One-way from

$457
(FlightHub)

Popular in

September

Cheapest in

May

Average price

$1,709
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 ($21 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 June 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 June 12, 2025.

This Trip.com deal was found by Cheapflights users on 6/11. 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.
Sat 8/304:55 pmPDX - CNX
2 stops39h 00mKorean Air
Sat 9/1311:15 pmCNX - PDX
2 stops28h 04mKorean Air
Deal found 6/11$790
This oojo deal was found by Cheapflights users on 6/11. 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 11/103:30 pmPDX - CNX
2 stops27h 55mChina Airlines
Wed 12/311:25 amCNX - PDX
2 stops26h 54mChina Airlines
Deal found 6/11$870
This FlightHub deal was found by Cheapflights users on 6/12. 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 9/239:30 pmPDX - CNX
2 stops28h 50mSTARLUX Airlines
Tue 9/305:20 pmCNX - PDX
2 stops41h 05mSTARLUX Airlines
Deal found 6/12$897
This Travelocity deal was found by Cheapflights users on 6/10. 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 Travelocity is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 7/15:40 pmPDX - CNX
2 stops39h 40mMultiple Airlines
Mon 7/712:15 amCNX - PDX
2 stops34h 15mMultiple Airlines
Deal found 6/10$984
This oojo deal was found by Cheapflights users on 6/12. 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.
Sat 10/48:59 pmPDX - CNX
2 stops23h 26mEVA Air
Mon 10/1311:35 amCNX - PDX
2 stops32h 45mEVA Air
Deal found 6/12$1,036
This Qatar Airways deal was found by Cheapflights users on 6/11. 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.
Tue 9/231:24 pmPDX - CNX
3 stops34h 21mQatar Airways
Tue 9/308:00 pmCNX - PDX
3 stops37h 10mQatar Airways
Deal found 6/11$1,335
This Delta deal was found by Cheapflights users on 6/12. 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 9/1212:40 amPDX - CNX
2 stops31h 15mDelta
Sun 9/2111:15 pmCNX - PDX
2 stops33h 58mDelta
Deal found 6/12$1,403
This Gurufare deal was found by Cheapflights users on 6/10. 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.
Tue 7/16:26 amPDX - CNX
2 stops40h 59mChina Eastern
Tue 7/84:20 pmCNX - PDX
3 stops37h 36mChina Eastern
Deal found 6/10$1,559
This Gurufare deal was found by Cheapflights users on 6/10. 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.
Thu 7/107:35 pmPDX - CNX
3 stops47h 10mAsiana Airlines
Wed 7/1612:45 amCNX - PDX
2 stops33h 52mAsiana Airlines
Deal found 6/10$2,871

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 June 12, 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

Sat 8/30

4:55 pm-9:55 pm

2 stops39h 00m

Chiang Mai

Sat 9/13

11:15 pm-1:19 pm

2 stops28h 04m

$790

PortlandChiang Mai

PDX - CNX

PDXCNX

Portland

Mon 11/10

3:30 pm-10:25 am

2 stops27h 55m

Chiang Mai

Wed 12/3

11:25 am-11:19 pm

2 stops26h 54m

$870

PortlandChiang Mai

PDX - CNX

PDXCNX

Portland

Tue 9/23

9:30 pm-4:20 pm

2 stops28h 50m

Chiang Mai

Tue 9/30

5:20 pm-8:25 pm

2 stops41h 05m

$897

PortlandChiang Mai

PDX - CNX

PDXCNX

Portland

Tue 7/1

5:40 pm-11:20 pm

2 stops39h 40m

Chiang Mai

Mon 7/7

12:15 am-8:30 pm

2 stops34h 15m

$984

PortlandChiang Mai

PDX - CNX

PDXCNX

Portland

Sat 10/4

8:59 pm-10:25 am

2 stops23h 26m

Chiang Mai

Mon 10/13

11:35 am-6:20 am

2 stops32h 45m

$1,036

PortlandChiang Mai

PDX - CNX

PDXCNX

Portland

Tue 9/23

1:24 pm-1:45 pm

3 stops34h 21m

Chiang Mai

Tue 9/30

8:00 pm-7:10 pm

3 stops37h 10m

$1,335

PortlandChiang Mai

PDX - CNX

PDXCNX

Portland

Fri 9/12

12:40 am-9:55 pm

2 stops31h 15m

Chiang Mai

Sun 9/21

11:15 pm-7:13 pm

2 stops33h 58m

$1,403

PortlandChiang Mai

PDX - CNX

PDXCNX

Portland

Tue 7/1

6:26 am-1:25 pm

2 stops40h 59m

Chiang Mai

Tue 7/8

4:20 pm-3:56 pm

3 stops37h 36m

$1,559

PortlandChiang Mai

PDX - CNX

PDXCNX

Portland

Thu 7/10

7:35 pm-8:45 am

3 stops47h 10m

Chiang Mai

Wed 7/16

12:45 am-8:37 pm

2 stops33h 52m

$2,871

PortlandChiang Mai

PDX - CNX

PDXCNX

Portland

Sat 8/9

4:55 pm-9:55 pm

2 stops39h 00m

$457

Flights are sorted by cheapest round-trip flights first.

Deals found on 6/10

Showing 1-10 of 14 results
1
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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 $1,012). Flying from Portland to Chiang Mai in December is currently the most expensive (average of $1,655). 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 June 12, 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.

Rainfall in Chiang Mai by month

Plan your trip to Chiang Mai by taking into account the average rainfall totals by month.

In terms of precipitation, rainfall in Chiang Mai ranges from 0.0 - 9.8 inches per month. September is typically the wettest month, when rainfall can reach 9.8 in. January is typically the driest time to visit Chiang Mai when rainfall is around 0.0 in.

Temperature in Chiang Mai by month

Plan your trip to Chiang Mai by taking into account the average temperature totals by month.

If weather is an important factor for your trip to Chiang Mai, use this chart to help with planning. For those seeking warmer temperatures, April is the ideal time of year to visit, when temperatures reach an average of 84.2 F. Travelers looking to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 69.8 F).

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 June 12, 2025.
STARLUX Airlines
9.1
Wonderful
178 reviews

Entertainment

8.9

Crew

9.3

Overall

9.1

Comfort

9.0

Boarding

9.0

Food

8.8

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
178 reviews
STARLUX Airlines
9.1
Wonderful
178 reviews

Entertainment

8.9

Crew

9.3

Overall

9.1

Comfort

9.0

Boarding

9.0

Food

8.8

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
1,202 reviews
STARLUX Airlines
9.1
Wonderful
178 reviews

Entertainment

8.9

Crew

9.3

Overall

9.1

Comfort

9.0

Boarding

9.0

Food

8.8

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
1,088 reviews
STARLUX Airlines
9.1
Wonderful
178 reviews

Entertainment

8.9

Crew

9.3

Overall

9.1

Comfort

9.0

Boarding

9.0

Food

8.8

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
440 reviews
STARLUX Airlines
9.1
Wonderful
178 reviews

Entertainment

8.9

Crew

9.3

Overall

9.1

Comfort

9.0

Boarding

9.0

Food

8.8

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.
Delta
8.0
Very good
7,950 reviews
STARLUX Airlines
9.1
Wonderful
178 reviews

Entertainment

8.9

Crew

9.3

Overall

9.1

Comfort

9.0

Boarding

9.0

Food

8.8

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 Korean Air. Our recent data shows that you can find tickets from as low as $790 on this airline. Additional options worth looking into are STARLUX Airlines and EVA Air, starting at $897 and $1,241 round-trip. Users have found that Korean Air is 40% 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.

  • 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 $1,012). Flying from Portland to Chiang Mai in December is currently the most expensive (average of $1,655). 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

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

Top 2 airlines flying from Portland to Chiang Mai

Discover the top 2 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 June 12, 2025.
AirlineCheapestAverageFlexibilityOn-time
Korean AirCheapest$789Average$1,274FlexibilityNo cancel feeOn-time81%
EVA AirCheapest$1,030Average$1,187FlexibilityNo cancel feeOn-time74%

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