PDX - CNX

$440 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 11/6. 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

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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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

Tue, Sep 23 - Tue, Nov 18
STARLUX Airlines Logo
7:31 pm - 4:20 pmPDX-CNX
30h 49m2 stops
STARLUX Airlines Logo
4:55 pm - 8:37 pmCNX-PDX
42h 42m2 stops
$896STARLUX Airlines
Find Deal
Wed, Oct 29 - Wed, Nov 5
China Airlines Logo
10:40 am - 10:25 amPDX-CNX
33h 45m2 stops
China Airlines Logo
11:25 am - 11:37 pmCNX-PDX
27h 12m2 stops
$920China Airlines
Find Deal
Mon, Nov 10 - Wed, Dec 3
Multiple Airlines Logo
7:20 am - 2:20 pmPDX-CNX
40h 00m2 stops
Multiple Airlines Logo
3:35 pm - 4:50 pmCNX-PDX
40h 15m2 stops
$937Multiple Airlines
Find Deal
Mon, Oct 13 - Thu, Dec 11
Multiple Airlines Logo
2:52 pm - 10:25 amPDX-CNX
29h 33m2 stops
Multiple Airlines Logo
11:50 am - 11:36 pmCNX-PDX
26h 46m2 stops
$942Multiple Airlines
Find Deal
Tue, Sep 23 - Mon, Nov 17
Delta Logo
7:15 am - 9:55 pmPDX-CNX
24h 40m2 stops
Delta Logo
12:15 am - 7:19 pmCNX-PDX
34h 04m2 stops
$1,011Delta
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Fri, Oct 17 - Wed, Oct 29
Delta Logo
5:25 pm - 9:55 pmPDX-CNX
38h 30m2 stops
Delta Logo
12:15 am - 8:51 pmCNX-PDX
34h 36m2 stops
$1,039Delta
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Sat, Oct 4 - Mon, Oct 13
China Eastern Logo
6:20 am - 1:25 pmPDX-CNX
41h 05m2 stops
China Eastern Logo
10:05 am - 4:12 pmCNX-PDX
44h 07m3 stops
$1,137China Eastern
Find Deal
Sat, Oct 4 - Mon, Oct 13
China Eastern Logo
6:20 am - 9:05 amPDX-CNX
36h 45m3 stops
China Eastern Logo
10:05 am - 4:12 pmCNX-PDX
44h 07m3 stops
$1,144China Eastern
Find Deal
Sat, Sep 27 - Tue, Sep 30
Korean Air Logo
9:17 am - 9:55 pmPDX-CNX
22h 38m2 stops
Korean Air Logo
11:15 pm - 10:39 pmCNX-PDX
37h 24m2 stops
$1,165Korean Air
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Sun, Oct 12 - Tue, Oct 28
Korean Air Logo
5:07 pm - 8:45 pmPDX-CNX
61h 38m2 stops
Korean Air Logo
12:15 am - 12:49 pmCNX-PDX
26h 34m2 stops
$1,174Korean Air
Find Deal

Everything you should know

Top airlines
STARLUX Airlines
Cheapest • from $896 (round-trip)
EVA Air
Best reviews • 8.4 score
Airline reviews
Airline reviews
+1
+1
Airline reviews
Airline reviews
+1
Cheapest round-trip
$896
Typical prices: $892-1125
STARLUX Airlines
Tue 9/23Tue 11/18
PDX - CNX • 2 stops
Cheapest one-way
$440
Multiple Airlines
Thu 11/6
PDX - CNX • 3 stops
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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!
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.

How much is a round-trip flight from Portland to Chiang Mai?

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.

Good to know

Low seasonMay
Cheapest flight$440
Best time to beat the crowds with an average 29% drop in price.
Most popular time to fly and prices are also 17% 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 $440 for a one-way ticket and $896 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?

    SkyTeam, oneworld, and Star Alliance are the airline alliances operating flights between Portland and Chiang Mai, with SkyTeam being the most commonly used for this route.

  • Which is the best airline for flights from Portland to Chiang Mai, EVA Air or Korean Air?

    The two airlines most popular with KAYAK users for flights from Portland to Chiang Mai are EVA Air and Korean Air. With an average price for the route of $1,104 and an overall rating of 8.4, EVA Air is the most popular choice. Korean Air is also a great choice for the route, with an average price of $1,150 and an overall rating of 8.4.

  • 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 airlines 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 1236 reviews
8.3Comfort
8.1Food
8.6Crew
8.4Boarding
8.0Entertainment
Airline reviews

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

10.0 ExcellentDale, Aug 2025SFO - TPE
Read more EVA Air reviews

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

Excellent food. Good service. Crammed Premium Economy seats. I Asked to change seats during check in. They told me the flight was fully booked. But on board I saw empty seats where I could have been easily relocated.

basic and only minimum of service, they offer nothing special

Good. Please add a non- applicable category to your questions.

The app was awful. No accurate info. Paying for internet is a negative (Delta is free). The crew was very nice for the most part although you are not guaranteed to get good service. Some crew would ignore requests for things as simple as a cup of water if you were sleeping when the first serving was made. Food was great. Male crew member was exceptionally kind and responsive.

They were trying to get people to check luggage because the over head compartments were full but when we boarded there were lots of empty places that people could have put the luggage.

It was good, I liked the self-serve snacks but it was a little difficult to get the alcohol, which is understandable since I wouldn't want kids sneaking it.

Friendly flight attendants and gate agents. Very clean plane and food was good!

I was unable to select decent seats, and so I was stuck in the middle seat because it was selected for me

There was a lot of partial tv shows but not enough to last the flight. The food was incredible! The crew were so helpful and patient. Lots more space than what I usually get on an international flight. Very comfortable!

Stingy on the drinks - 15 hour direct flight and could barely get attention for some water

Not many people, so you can lay down on two seats

They did an excellent job helping me with a wheelchair. I couldn’t have asked for any better help.

The delay in Korea was a pain and set us back a day. I have to give big props to Korean Air for setting up a hotel with dinner and transportation to and from the hotel. I also needed assistance with a wheelchair and they did an outstanding job.

Great except for the delay in Korea. Korean Air did a great job setting up a hotel for the night. I also needed assistance with a wheelchair and they were outstanding.

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

Information on your arrival and departure airports

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