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

Currently, November is the cheapest month in which you can book a flight from Chiang Mai to Portland (average of $277). Flying from Chiang Mai to Portland in March is currently the most expensive (average of $368). 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 day to fly from Chiang Mai to Portland?

Travelers seeking maximum savings on their Chiang Mai to Portland flight should consider departing on Tuesday evenings when fares are most often at their lowest. Wednesday evenings flights should be avoided if possible as fares are typically the most expensive at this time.

In terms of precipitation, rainfall in Portland ranges from 0.7 - 5.6 inches per month. November is typically the wettest month, when rainfall can reach 5.6 in. July is typically the driest time to visit Portland when rainfall is around 0.7 in.

If weather is an important factor for your trip to Portland, use this chart to help with planning. For those seeking warmer temperatures, July is the ideal time of year to visit, when temperatures reach an average of 69.8 F. Travelers looking to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 41.0 F).

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

Monday is generally a great day to depart. Flying on this day could help you save up to 2%.

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

Regardless of the time of day you decide to fly, the ticket price will remain around the same. Book flights from Chiang Mai to Portland as you normally would.

Can I find deals for flights from Chiang Mai to Portland that include hotel bookings?

Yes. In addition to deals on Chiang Mai to Portland flights, Cheapflights offers vacation packages that include both flights and hotel.

How can I find direct flights from Chiang Mai to Portland?

After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Chiang Mai to Portland.

Can I find deals for business class flights from Chiang Mai to Portland?

Yes. Cheapflights offers flight deals from Chiang Mai to Portland by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

$427+ Flights from Chiang Mai to Portland

Home Search by date Vacation packages Hotels Flight deals Car rental Travel tips & news

Find cheap flights from Chiang Mai to Portland with Cheapflights

1. Tell us where you want to go

Enter your travel information like dates, passengers, trip type (one-way or round trip), and preferred cabin class then click “Find deals”

2. Select your favorite providers

We find the providers serving your travel needs. Choose up to four travel providers to compare side-by-side for flights, hotels, or car rentals.

3. Compare prices and book

Review each provider’s pricing and select the best option for you! Book through your favorite provider’s website for a seamless experience.

Cheap flight deals from Chiang Mai to Portland

Round-trip from	$928 (Trip.com)
One-way from	$427 (Kiwi.com)

From Chiang Mai to Portland

Search Deals

One-way flight from Chiang Mai to Portland

Search Deals

Find flight deals from Chiang Mai to Portland

Cheapest flights from Chiang Mai to Portland
Explore the most affordable flight options available from Chiang Mai to Portland. Find the lowest fares from popular airlines and budget airlines, with prices last updated on August 20, 2025.

Fri 9/511:20 amCNX - PDX

2 stops23h 10mMultiple Airlines

Thu 11/135:30 pmPDX - CNX

2 stops25h 55mMultiple Airlines

Deal found 8/20

$928

Wed 9/1011:20 amCNX - PDX

2 stops36h 06mMultiple Airlines

Wed 12/102:34 pmPDX - CNX

2 stops28h 51mMultiple Airlines

Deal found 8/20

$993

Wed 9/108:00 pmCNX - PDX

3 stops37h 10mQatar Airways

Wed 12/1010:30 amPDX - CNX

3 stops31h 55mQatar Airways

Deal found 8/20

$1,701

Wed 9/1011:15 pmCNX - PDX

2 stops38h 37mDelta

Tue 12/912:55 amPDX - CNX

2 stops31h 10mDelta

Deal found 8/20

$4,848

Best flights from Chiang Mai to Portland
Discover carefully curated flight deals from Chiang Mai to Portland that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated August 20, 2025.

Fri 9/511:20 amCNX - PDX

2 stops23h 10mMultiple Airlines

Thu 11/135:30 pmPDX - CNX

2 stops25h 55mMultiple Airlines

Deal found 8/20

$928

Wed 9/108:00 pmCNX - PDX

3 stops37h 10mQatar Airways

Wed 12/1010:30 amPDX - CNX

3 stops31h 55mQatar Airways

Deal found 8/20

$1,701

Wed 9/1011:20 amCNX - PDX

2 stops36h 06mMultiple Airlines

Wed 12/102:34 pmPDX - CNX

2 stops28h 51mMultiple Airlines

Deal found 8/20

$993

Wed 9/1011:15 pmCNX - PDX

2 stops38h 37mDelta

Tue 12/912:55 amPDX - CNX

2 stops31h 10mDelta

Deal found 8/20

$4,848

Last-minute flights from Chiang Mai to Portland
Discover last-minute flight deals from Chiang Mai to Portland. Data last updated August 20, 2025 and is based on user searches.

Fri 9/511:20 amCNX - PDX

2 stops23h 10mMultiple Airlines

Thu 11/135:30 pmPDX - CNX

2 stops25h 55mMultiple Airlines

Deal found 8/20

$928

Wed 9/1011:20 amCNX - PDX

2 stops36h 06mMultiple Airlines

Wed 12/102:34 pmPDX - CNX

2 stops28h 51mMultiple Airlines

Deal found 8/20

$993

Wed 9/108:00 pmCNX - PDX

3 stops37h 10mQatar Airways

Wed 12/1010:30 amPDX - CNX

3 stops31h 55mQatar Airways

Deal found 8/20

$1,701

Wed 9/1011:15 pmCNX - PDX

2 stops38h 37mDelta

Tue 12/912:55 amPDX - CNX

2 stops31h 10mDelta

Deal found 8/20

$4,848

One-way flights from Chiang Mai to Portland
Search for one-way flight options from Chiang Mai to Portland. Find affordable one-way fares based on user searches. Data last updated August 20, 2025.

Sun 9/76:50 pmCNX - PDX

3 stops52h 53mMultiple Airlines

Deal found 8/19

$427

Mon 9/810:25 pmCNX - PDX

3 stops49h 18mMultiple Airlines

Deal found 8/19

$445

Sat 9/610:35 pmCNX - PDX

3 stops51h 33mMultiple Airlines

Deal found 8/19

$460

Fri 9/510:25 pmCNX - PDX

3 stops51h 43mMultiple Airlines

Deal found 8/19

$497

Tue 12/24:55 pmCNX - PDX

2 stops43h 25mSTARLUX Airlines

Deal found 8/19

$532

Mon 12/13:30 pmCNX - PDX

3 stops57h 09mMultiple Airlines

Deal found 8/19

$552

Thu 9/45:20 pmCNX - PDX

2 stops30h 27mMultiple Airlines

Deal found 8/19

$559

Mon 9/811:15 pmCNX - PDX

2 stops47h 00mDelta

Deal found 8/19

$561

Thu 1/2212:15 amCNX - PDX

2 stops34h 14mKorean Air

Deal found 8/18

$563

Tue 12/210:25 pmCNX - PDX

3 stops50h 25mMultiple Airlines

Deal found 8/19

$567

Cheapflights Fare Finder

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

Fly from

Fly to

Route

Depart

Return

Price

Chiang MaiPortland

CNX - PDX

CNXPDX

Chiang Mai

Fri 9/5

11:20 am-8:30 pm

2 stops23h 10m

Portland

Thu 11/13

5:30 pm-10:25 am

2 stops25h 55m

$928

Chiang MaiPortland

CNX - PDX

CNXPDX

Chiang Mai

Wed 9/10

11:20 am-9:26 am

2 stops36h 06m

Portland

Wed 12/10

2:34 pm-10:25 am

2 stops28h 51m

$993

Chiang MaiPortland

CNX - PDX

CNXPDX

Chiang Mai

Wed 9/10

8:00 pm-7:10 pm

3 stops37h 10m

Portland

Wed 12/10

10:30 am-9:25 am

3 stops31h 55m

$1,701

Chiang MaiPortland

CNX - PDX

CNXPDX

Chiang Mai

Wed 9/10

11:15 pm-11:52 pm

2 stops38h 37m

Portland

Tue 12/9

12:55 am-11:05 pm

2 stops31h 10m

$4,848

Chiang MaiPortland

CNX - PDX

CNXPDX

Chiang Mai

Sun 9/7

6:50 pm-9:43 am

3 stops52h 53m

$427

Chiang MaiPortland

CNX - PDX

CNXPDX

Chiang Mai

Mon 9/8

10:25 pm-9:43 am

3 stops49h 18m

$445

Chiang MaiPortland

CNX - PDX

CNXPDX

Chiang Mai

Sat 9/6

10:35 pm-12:08 pm

3 stops51h 33m

$460

Chiang MaiPortland

CNX - PDX

CNXPDX

Chiang Mai

Fri 9/5

10:25 pm-12:08 pm

3 stops51h 43m

$497

Chiang MaiPortland

CNX - PDX

CNXPDX

Chiang Mai

Tue 12/2

4:55 pm-9:20 pm

2 stops43h 25m

$532

Chiang MaiPortland

CNX - PDX

CNXPDX

Chiang Mai

Wed 12/3

7:00 am-9:39 am

3 stops41h 39m

$532

Flights are sorted by cheapest round-trip flights first.

Deals found on 8/19

Showing 1-10 of 14 results

Best time to book a flight from Chiang Mai to Portland

Have a flexible travel schedule? Discover the best time to fly to Portland from Chiang Mai 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.

Related info for your journey

Can I find deals for flights from Chiang Mai to Portland that include hotel bookings?
Yes. In addition to deals on Chiang Mai to Portland flights, Cheapflights offers vacation packages that include both flights and hotel.
How can I find direct flights from Chiang Mai to Portland?
After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Chiang Mai to Portland.
Can I find deals for business class flights from Chiang Mai to Portland?
Yes. Cheapflights offers flight deals from Chiang Mai to Portland 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 Chiang Mai to Portland?
Currently, November is the cheapest month in which you can book a flight from Chiang Mai to Portland (average of $277). Flying from Chiang Mai to Portland in March is currently the most expensive (average of $368). 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

Vancouver

Seaside

Beaverton

Clackamas

McMinnville

Lake Oswego

Hillsboro

Cannon Beach

Long Beach

Longview

Tigard

Depoe Bay

Stevenson

Wilsonville

Pacific City

Troutdale

Tillamook

Gresham

Lincoln City

Silverton

Browse thousands of different options on Cheapflights for your next trip

Alternative routes for Chiang Mai to Portland

Suvarnabhumi to Portland flights

Suvarnabhumi to Redmond flights

Complete your trip

Portland car rentals

Portland Airport car rentals

Pearl District car rentals

Southeast Portland car rentals

Northeast Portand car rentals

Southwest Portland car rentals

North Portland car rentals

Eastmoreland car rentals

Other flights to Portland

100% Free

Cheapflights is completely free to use, so you can start saving the moment you arrive.

Book with Flexibility

Our users can plan ahead with confidence and find flights with no change fees

Travel Smart

Millions of people come to us for their flight needs every year. We help make travel planning easy by providing useful insights and data-driven graphs that can inform your decisions.

$427+ Cheap flights from Chiang Mai (CNX) to Portland (PDX)

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 9/7. Fares are subject to change and may not be available on all flights or dates of travel.

Find cheap flights from Chiang Mai to Portland with Cheapflights

1. Tell us where you want to go

2. Select your favorite providers

3. Compare prices and book

Cheap flight deals from Chiang Mai to Portland

Round-trip from

One-way from

Find flight deals from Chiang Mai to Portland

Cheapest flights from Chiang Mai to PortlandExplore the most affordable flight options available from Chiang Mai to Portland. Find the lowest fares from popular airlines and budget airlines, with prices last updated on August 20, 2025.

Explore the most affordable flight options available from Chiang Mai to Portland. Find the lowest fares from popular airlines and budget airlines, with prices last updated on August 20, 2025.

Cheapflights Fare Finder

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

Best time to book a flight from Chiang Mai to Portland

Have a flexible travel schedule? Discover the best time to fly to Portland from Chiang Mai with our price prediction graph.

Related info for your journey

Find useful and relevant information for your journey from Chiang Mai to Portland. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

Can I find deals for flights from Chiang Mai to Portland that include hotel bookings?

How can I find direct flights from Chiang Mai to Portland?

Can I find deals for business class flights from Chiang Mai to Portland?

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

Traveling to a place near Portland?

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.

Alternative routes for Chiang Mai to Portland

See prices for flight routes from nearby airports that may be better suited for you.

100% Free

Book with Flexibility

Travel Smart

Cheapest flights from Chiang Mai to Portland
Explore the most affordable flight options available from Chiang Mai to Portland. Find the lowest fares from popular airlines and budget airlines, with prices last updated on August 20, 2025.