PDX - CNX

$529 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 9/22. 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

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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Flights Deals

Cheap Flight Deals 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.

Recent round-trip flight deals from Portland to Chiang Mai

KAYAK's recommended round-trip deals from the most popular airlines that fly from Portland to Chiang Mai.
Discover the best prices for you by selecting your travel dates on KAYAK.
STARLUX Airlines Logo
8:37 pm - 4:20 pmPDX-CNX
29h 43m2 stops
STARLUX Airlines Logo
5:20 pm - 7:10 pmCNX-PDX
39h 50m2 stops
$932STARLUX Airlines
Find Deal
Tue, Sep 23 - Tue, Sep 30
 Logo
7:00 am - 11:40 pmPDX-CNX
26h 40m2 stops
 Logo
12:45 am - 8:30 pmCNX-PDX
33h 45m2 stops
Wed, Aug 6 - Tue, Aug 26
Delta Logo
5:30 am - 9:55 pmPDX-CNX
26h 25m2 stops
Delta Logo
11:15 pm - 8:49 pmCNX-PDX
35h 34m2 stops
$955Delta
Find Deal
Tue, Aug 26 - Sun, Sep 14
Korean Air Logo
5:10 pm - 9:55 pmPDX-CNX
38h 45m2 stops
Korean Air Logo
11:15 pm - 5:06 pmCNX-PDX
31h 51m2 stops
$960Korean Air
Find Deal
Mon, Sep 1 - Sun, Sep 21
STARLUX Airlines Logo
7:34 pm - 4:20 pmPDX-CNX
30h 46m2 stops
STARLUX Airlines Logo
5:20 pm - 8:25 pmCNX-PDX
41h 05m2 stops
$963STARLUX Airlines
Find Deal
Thu, Sep 4 - Thu, Sep 25
Delta Logo
5:30 am - 9:55 pmPDX-CNX
26h 25m2 stops
Delta Logo
11:15 pm - 11:51 pmCNX-PDX
38h 36m2 stops
$995Delta
Find Deal
Fri, Aug 29 - Tue, Sep 23
Korean Air Logo
5:10 pm - 9:55 pmPDX-CNX
38h 45m2 stops
Korean Air Logo
11:15 pm - 5:06 pmCNX-PDX
31h 51m2 stops
$996Korean Air
Find Deal
Sat, Sep 13 - Sun, Sep 21
China Airlines Logo
2:30 pm - 10:20 amPDX-CNX
29h 50m2 stops
China Airlines Logo
11:20 am - 9:47 amCNX-PDX
36h 27m2 stops
$1,002China Airlines
Find Deal
Wed, Aug 27 - Wed, Sep 17
EVA Air Logo
5:55 pm - 10:25 amPDX-CNX
26h 30m2 stops
EVA Air Logo
11:35 am - 8:35 pmCNX-PDX
23h 00m2 stops
$1,021EVA Air
Find Deal
Wed, Aug 6 - Wed, Aug 27
EVA Air Logo
11:15 am - 10:25 amPDX-CNX
33h 10m2 stops
EVA Air Logo
11:35 am - 8:18 pmCNX-PDX
46h 43m2 stops
$1,320EVA Air
Find Deal
Mon, May 26 - Mon, Jun 9
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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.

What is the cheapest month to fly from Portland to Chiang Mai?

To calculate monthly average prices, KAYAK takes all prices for each month over the last year for round-trip flights from Portland to Chiang Mai, removes the top 0.1% to account for outliers, and then takes the median of all values for each month.

The cheapest month for flights from Portland to Chiang Mai is May, where tickets cost $975 (return) on average. On the other hand, the most expensive months are September and June, where the average cost of round-trip tickets is $2,881 and $1,991 respectively.

Good to know

Low seasonJanuary
High seasonNovember
Cheapest flight$529
Best time to beat the crowds but there is an average 2% increase in price.
Most popular time to fly and prices are also 11% 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 $529 for a one-way ticket and $932 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, Star Alliance, and oneworld 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, Korean Air or Delta?

    The two airlines most popular with KAYAK users for flights from Portland to Chiang Mai are Korean Air and Delta. With an average price for the route of $1,489 and an overall rating of 8.4, Korean Air is the most popular choice. Delta is also a great choice for the route, with an average price of $1,300 and an overall rating of 8.0.

  • 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.

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
Korean AirOverall score based on 1068 reviews
8.5Boarding
8.3Comfort
8.1Food
8.2Entertainment
8.7Crew
Airline reviews

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

10.0 ExcellentAnonymous, Apr 2025ATL - ICN
Read more Korean Air reviews

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.

The flight was on time and very quick, as expected, but the leg room isn't great in coach seats.

Just a typical domestic poor flight nothing more. There is no food choices in such a flight. Crew doesn't really care if you are on-board or not

My second flight wasn't better than the first one. And this is 14 hours trip, crew came out only to offer food and the choices was poor. This food choices are good for Asian people but not for westerners. The breakfast kind thing was a corn sausage really disgusting. The air-conditioned blower really blow high and cold, turn out on my arrival to feel seek, that makes the trip uncomfortable. The crew didn't not really come out during the trip to offer drinks or snacks. No fruits available. Very poor service

long flights are difficult but the crew and amenities made it a very good experience

Our seat row plus one ahead and behind we're completely overlooked during beverage service...

I loved everything, I was just a little confused on my bag allowance. When I checked in it said I was allowed 2 check in bags, but when I got there they said I was only allowed 1 so I had to pay an additional 200 dollars! Other then that everything was great! I would love to use your Airlines again when I fly out to Manila again in late May, however I want to be able to have 2 bags included this time lol 😆

Our bag was lost so that made unnecessary chaos On our trip

Delta is my preferred airline. I've traveled with them for years. On time in most cases, good communication, easy to use app. Most planes are pretty nice. I was on a CRJ 700/900 however, which was pretty badly aged inside and needed a refresh. No infotainment, unreliable wifi, best to download before boarding or bring a book. Food choices are really just snacks on this flight, nice variety but about what you'd expect. Great staff and prompt in departure and early arrival too. Overall quite satisfied.

Crew was friendly Love the entertainment in the seat head rest.

Delta flight was on time, seats were comfortable, and crew was nice.

This had nothing to do with Delta… The flights were on time and flawless. The service was excellent. We purchased seats in (aisle/middle) comfort plus since this was a cross country flight. Unfortunately, the woman seated at the window was 300+ pounds and, as might be expected, covered up about a third of the middle seat also. there was absolutely nothing that Delta could have done about that… I just don’t know what the answer should be. If you purchase a seat, you should should be able to use the entire seat and not just the portion that someone else is not sitting/oozing in. Disappointing…there should be something that could be done….I'm just not sure what solution could be.

Delayed take-off. Very small plane so very scary with lots of bumps during the flight. Would never fly Delta on short flights in small 80 seaters plane again! Felt relieved when landed.

The worst part was I was NOT allowed in the lounge even though I was holding a first class ticket and have a premium American Express card. I have flown Business or First Class with many airlines. Delta is the ONLY one who does not extend this courtesy to anyone except people who hold the very expensive American Express card. As a result, I won’t fly Delta if I have any other choice.

It was an overnight flight and I desperately needed coffee before we landed, but Delta does only one beverage service, and that is shortly after takeoff, not before landing at 5 am.

A little bumpy ride . No food was being provided due the the turbulence. That was ok it was a short flight to my standards.

Simply outstanding. Their new lounge for Delta One customers is a cut above the rest.

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

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