PDX - CNX

$488 Find Cheap Flights from Portland to Chiang Mai

This is the cheapest one-way flight price found by a KAYAK user in the last 72 hours by searching for a flight from Portland to Chiang Mai departing on 11/17. Fares are subject to change and may not be available on all flights or dates of travel. Click the price to replicate the search for this deal.
1 adult
1 adult, Economy, 0 bags

KAYAK searches hundreds of travel sites at once for deals on flights to Chiang Mai

 
These are the airlines KAYAK users have selected most often from within our search results in flight searches from Portland to Chiang Mai, as well as popular online travel agencies
These are the airlines KAYAK users have selected most often from within our search results in flight searches from Portland to Chiang Mai, as well as popular online travel agencies
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Everything you should know

Cheapest round-trip
$854
China Airlines
Wed 1/7Wed 2/11
PDX - CNX • 2 stops
Cheapest one-way
$488
Multiple Airlines
Mon 11/17
PDX - CNX • 2 stops
Top airlines
China Airlines
Cheapest • from $854 (round-trip)
EVA Air
Best reviews • 8.4 score
Airline reviews
Airline reviews
+1
+1
Airline reviews
Airline reviews
+1
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KAYAK searches 100s of sites at once to find you the best travel deals.
We hope you love your trip to Chiang Mai!
Flight Deals
Booking Insights
Flight Deals

Cheap Flights from Portland to Chiang Mai (PDX-CNX)

 
Here are some of the best deals found on KAYAK recently from the most popular airlines for round-trip flights from Portland to Chiang Mai that are departing in the next months. While these flights were available on KAYAK in the last 72 hours, prices and availability are subject to change and deals may expire.
Discover the best prices for you by selecting your travel dates on KAYAK.

Recent round-trip flight deals from Portland to Chiang Mai

Wed, Jan 7 - Wed, Feb 11
China Airlines Logo
10:33 am - 10:25 amPDX-CNX
32h 52m2 stops
China Airlines Logo
11:25 am - 11:32 pmCNX-PDX
27h 07m2 stops
$854China Airlines
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Mon, Jan 12 - Mon, Feb 16
China Airlines Logo
5:51 pm - 10:25 amPDX-CNX
25h 34m2 stops
China Airlines Logo
5:35 pm - 4:28 pmCNX-PDX
37h 53m2 stops
$860China Airlines
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Tue, Jan 20 - Tue, Jan 27
China Airlines Logo
5:35 pm - 10:25 amPDX-CNX
25h 50m2 stops
China Airlines Logo
11:25 am - 4:49 pmCNX-PDX
44h 24m2 stops
$871China Airlines
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Thu, Jan 15 - Tue, Feb 24
Korean Air Logo
7:10 am - 10:55 pmPDX-CNX
24h 45m2 stops
Korean Air Logo
12:15 am - 4:14 pmCNX-PDX
30h 59m2 stops
$952Korean Air
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Thu, Jan 15 - Tue, Feb 24
Korean Air Logo
7:10 am - 10:55 pmPDX-CNX
24h 45m2 stops
Korean Air Logo
12:15 am - 6:53 pmCNX-PDX
33h 38m2 stops
$953Korean Air
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Thu, Jan 22 - Mon, Feb 2
Multiple Airlines Logo
7:24 am - 2:20 pmPDX-CNX
39h 56m2 stops
Multiple Airlines Logo
3:35 pm - 4:49 pmCNX-PDX
40h 14m2 stops
$956Multiple Airlines
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Tue, Jan 20 - Tue, Jan 27
Multiple Airlines Logo
7:45 am - 9:25 amPDX-CNX
34h 40m3 stops
Multiple Airlines Logo
9:05 pm - 2:48 pmCNX-PDX
32h 43m3 stops
$962Multiple Airlines
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Wed, Jan 14 - Wed, Feb 25
EVA Air Logo
10:33 am - 10:35 amPDX-CNX
33h 02m2 stops
EVA Air Logo
11:50 am - 9:47 amCNX-PDX
36h 57m2 stops
$963EVA Air
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Thu, Jan 1 - Thu, Jan 22
EVA Air Logo
1:51 pm - 10:35 amPDX-CNX
29h 44m2 stops
EVA Air Logo
11:50 am - 10:46 pmCNX-PDX
25h 56m2 stops
$980EVA Air
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Thu, Jan 1 - Thu, Jan 22
China Eastern Logo
6:00 am - 9:05 amPDX-CNX
36h 05m3 stops
China Eastern Logo
4:25 pm - 4:30 pmCNX-PDX
39h 05m3 stops
$1,144China Eastern
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Booking Insights

KAYAK's insights & trends for Portland to Chiang Mai flights

Get data-powered insights and trends into flights from Portland to Chiang Mai to help you find the cheapest flights, the best time to fly and much more.

What’s the cheapest day of the week to fly from Portland to Chiang Mai?

The average price of all round-trip flights from Portland to Chiang Mai clicked on KAYAK for each day over the last 12 months.

Your flight ticket price will generally be cheaper if you fly to Chiang Mai on a Wednesday and more expensive on a Tuesday. On your return trip to Portland, you should consider flying back on a Tuesday, and avoid Wednesdays for better deals.

Find deals

Good to know

Low seasonNovember
Cheapest flight$488
Best time to beat the crowds with an average 40% drop in price.
Most popular time to fly and prices are also 26% lower on average.
Flight from Portland to Chiang Mai

When to book flights from Portland to Chiang Mai

Are your dates flexible? Find out the best times to travel from Portland to Chiang Mai based on our flight data from the last year. Discover the cheapest month and even day to fly.
Estimated round-trip price
KAYAK looks at all historical flight data for each date to provide a predicted price for one-way trips or round-trips with a duration up to 40 days. While we try to provide actual minimum prices for each date, some prices are predictions and actual prices may differ.

FAQs for booking flights from Portland to Chiang Mai

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

    In the last 3 days, the lowest price for a flight from Portland to Chiang Mai was $488 for a one-way ticket and $854 for a round-trip.

  • Do I need a passport to fly between Portland and Chiang Mai?

    Yes

  • Which aircraft models fly most regularly from Portland to Chiang Mai?

    We unfortunately don’t have that data for this specific route.

  • Which airline alliances offer flights from Portland to Chiang Mai?

    Star Alliance is the only airline alliance operating flights between Portland and Chiang Mai.

  • How does KAYAK find such low prices on flights from Portland to Chiang Mai?

    KAYAK is a travel search engine. That means we look across the web to find the best prices we can find for our users. With over 2 billion flight queries processed yearly, we are able to display a variety of prices and options on flights from Portland to Chiang Mai.

  • How does KAYAK's flight Price Forecast tool help me choose the right time to buy my flight ticket from Portland to Chiang Mai?

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to Chiang Mai from Portland is likely to change within 7 days, so travelers know whether to wait or book now.

  • What is the Hacker Fare option on flights from Portland to Chiang Mai?

    Hacker Fares allow you to combine one-way tickets in order to save you money over a traditional round-trip ticket. You could then fly to Chiang Mai with an airline and back to Portland with another airline. Booking your flights between Portland and CNX can sometimes prove cheaper using this method.

  • What is KAYAK's "flexible dates" feature and why should I care when looking for a flight from Portland to Chiang Mai?

    Sometimes travel dates aren't set in stone. If your preferred travel dates have some wiggle room, flexible dates will show you all the options when flying to Chiang Mai from Portland up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

Reviews of the top airline flying from Portland to Chiang Mai

 
See real verified KAYAK customer reviews for airlines flying from Portland to Chiang Mai. Airline scores are aggregated from all reviews left by passengers on KAYAK after flying with an airline. KAYAK doesn’t show reviews that are older than 5 years. Learn how KAYAK collects reviews.
Need help choosing which airline to fly with from Portland to Chiang Mai? KAYAK airline reviews give an overall score for each airline based on loads of factors, including comfort, boarding, in-flight entertainment and more, to make your decision easier. See airline scores according to verified KAYAK customer reviews.
8.4
EVA AirOverall score based on 1270 reviews
8.6Crew
8.1Food
8.4Boarding
8.0Entertainment
8.3Comfort
Airline reviews

It was very long way flight but its good I like the food they serve in EVA air its really good!

8.0 ExcellentMary Grace, Oct 2025MNL - TPE
Read more EVA Air reviews

It was very long way flight but its good I like the food they serve in EVA air its really good!

Although the flight was slightly delayed, it was well communicated with the passengers. The staff are all nice and accommodating, the pilot are very good. I didn’t realize that the plane was on the ground already. It landed smoothly. I’ll for surely recommend EVA Air to my friends.

The crew very accommodating and food too is good. Keep up the good work

The crews are very efficient. Other airlines should learn from them when it comes to boarding and departing from the airplane. They also display efficiency in serving meals. They don't keep the aisles blocked for hours like some other airlines. The food is poor. Generally the food was unrecognizable and poorly prepared. The only thing that made it better than US flag carriers is that there was a fresh fruit bowl with each meal.

Very good service and food. Crew was professional and considerate. Cabin and restrooms were kept clean

Flight Attendants could have been nicer and food portions could be bigger.

Great experience, comfort and food is delicious. Always great service and one time

The food from Los Angeles to Taipei made me throw up. The flight is also not comfort. But the staffs are very friendly and nice.

I appreciate the email reminders for online check-in which made my entry to the lines less stressful. The flight was on schedule and on time. The baording staff were proactively helpful and approachable. The airplane inflight food, entertainment and comfies as well as provisions are excellent even in the economy seating. The airline transfer was smooth and easy! Luggage safe and intact! Thank you EVA airline for making my trip a reliable safe and comfortable experience.

I was sleep when they brought the food. They had put a note on my seat. There was no food when I asked for food later. There was just one main meal served in this 14 hours flight. They offered me sandwich with ham which I don’t eat since I am pescatarian. Long story short I had to wait to get to TPE to get something to eat. I am extremely disappointed from the service. I have been flying EVA since I was 1 year old. Perhaps no more EVA for me. Seems EVA glorious day is long gone

Everything you need to know for your flight from Portland to Chiang Mai

Information on your arrival and departure airports

Portland (PDX)
Chiang Mai (CNX)