$542+ Cheap flights from Portland (PDX) to Chiang Mai (CNX)
This is the cheapest round-trip flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 11/16. Fares are subject to change and may not be available on all flights or dates of travel.
PDX — CNX
Oct 7 — Oct 141
Round-trip
1 adult, Economy
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Find cheap flights from Portland to Chiang Mai 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 Portland to Chiang Mai
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Best
Last-minute
One-way
Cheapest flights from Portland to Chiang MaiExplore 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 September 7, 2026.
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 September 7, 2026.
This CheapOair deal was found by Cheapflights users on 9/3. 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 CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/157:45 pm -
2 stops36h 15m
Wed 9/3011:30 am -
2 stops36h 01m
Deal found 9/3![Multiple Airlines logo]()
$950
This FlightHub deal was found by Cheapflights users on 9/3. 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.
Mon 11/306:20 am -
2 stops41h 00m
Mon 12/73:35 pm -
2 stops39h 50m
Deal found 9/3![China Eastern logo]()
$961
This oojo deal was found by Cheapflights users on 9/5. 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.
Sun 11/111:54 am -
2 stops59h 26m
Fri 11/203:35 pm -
2 stops40h 05m
Deal found 9/5![Multiple Airlines logo]()
$1,025
This BusinessClass deal was found by Cheapflights users on 9/5. 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 BusinessClass is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 10/207:03 am -
2 stops40h 22m
Tue 10/273:35 pm -
2 stops38h 59m
Deal found 9/5![Multiple Airlines logo]()
$1,036
This oojo deal was found by Cheapflights users on 9/3. 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.
Wed 10/282:53 pm -
2 stops57h 27m
Mon 11/303:35 pm -
2 stops39h 52m
Deal found 9/3![Multiple Airlines logo]()
$1,066
This FlightHub deal was found by Cheapflights users on 9/3. 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.
Fri 12/46:00 am -
2 stops41h 20m
Sun 12/203:35 pm -
2 stops44h 12m
Deal found 9/3![Multiple Airlines logo]()
$1,073
This FlightHub deal was found by Cheapflights users on 9/2. 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 10/612:18 pm -
2 stops32h 02m
Tue 12/811:25 am -
2 stops26h 08m
Deal found 9/2![Multiple Airlines logo]()
$1,088
This FlightHub deal was found by Cheapflights users on 9/2. 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.
Sun 10/182:30 pm -
2 stops56h 55m
Sat 10/242:55 pm -
2 stops46h 21m
Deal found 9/2![Multiple Airlines logo]()
$1,089
Best flights from Portland to Chiang MaiDiscover carefully curated flight deals from Portland to Chiang Mai that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated September 7, 2026.
Discover carefully curated flight deals from Portland to Chiang Mai that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated September 7, 2026.
This Korean Air deal was found by Cheapflights users on 9/5. 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 Korean Air is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 2/226:40 am -
2 stops25h 05m
Wed 2/2412:20 am -
2 stops34h 08m
Deal found 9/5![Korean Air logo]()
$998
This Gotogate deal was found by Cheapflights users on 9/5. 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 Gotogate is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 10/207:03 am -
3 stops36h 12m
Tue 10/274:25 pm -
3 stops42h 08m
Deal found 9/5![Multiple Airlines logo]()
$1,053
This Ovago deal was found by Cheapflights users on 9/4. 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 Ovago is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 12/711:09 pm -
2 stops39h 56m
Mon 1/49:10 am -
2 stops50h 41m
Deal found 9/4![Etihad Airways logo]()
$1,356
This FlightHub deal was found by Cheapflights users on 9/4. 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.
Fri 12/46:00 am -
2 stops41h 20m
Sun 12/203:35 pm -
2 stops44h 12m
Deal found 9/4![Multiple Airlines logo]()
$1,073
This IEagle deal was found by Cheapflights users on 9/3. 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 IEagle is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/19:35 pm -
2 stops46h 50m
Thu 10/1511:35 am -
2 stops23h 15m
Deal found 9/3![Multiple Airlines logo]()
$1,145
This Gotogate deal was found by Cheapflights users on 9/5. 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 Gotogate is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 10/49:31 am -
2 stops34h 49m
Sun 10/119:10 pm -
2 stops26h 21m
Deal found 9/5![Multiple Airlines logo]()
$1,171
This Booking.com deal was found by Cheapflights users on 9/5. 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 Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 11/19:32 pm -
3 stops44h 53m
Fri 11/207:45 pm -
3 stops35h 55m
Deal found 9/5![Multiple Airlines logo]()
$1,256
This BusinessClass deal was found by Cheapflights users on 9/4. 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 BusinessClass is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 11/307:36 pm -
2 stops23h 59m
Mon 12/77:45 pm -
3 stops36h 05m
Deal found 9/4![Multiple Airlines logo]()
$1,269
This Gotogate deal was found by Cheapflights users on 9/4. 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 Gotogate is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 11/159:32 pm -
3 stops44h 53m
Thu 11/2612:45 am -
2 stops32h 46m
Deal found 9/4![Multiple Airlines logo]()
$1,422
Last-minute flights from Portland to Chiang MaiDiscover last-minute flight deals from Portland to Chiang Mai. Data last updated September 7, 2026 and is based on user searches.
Discover last-minute flight deals from Portland to Chiang Mai. Data last updated September 7, 2026 and is based on user searches.
This CheapOair deal was found by Cheapflights users on 9/3. 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 CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/157:45 pm -
2 stops36h 15m
Wed 9/3011:30 am -
2 stops36h 01m
Deal found 9/3![Multiple Airlines logo]()
$950
This oojo deal was found by Cheapflights users on 9/2. 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.
Wed 9/306:50 pm -
2 stops25h 30m
Wed 12/211:25 am -
2 stops26h 08m
Deal found 9/2![China Airlines logo]()
$1,156
This IEagle deal was found by Cheapflights users on 9/2. 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 IEagle is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/307:03 am -
3 stops35h 42m
Wed 12/27:45 pm -
3 stops36h 05m
Deal found 9/2![Multiple Airlines logo]()
$1,158
This IEagle deal was found by Cheapflights users on 9/3. 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 IEagle is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/19:35 pm -
2 stops46h 50m
Thu 10/1511:35 am -
2 stops23h 15m
Deal found 9/3![Multiple Airlines logo]()
$1,145
This FlightHub deal was found by Cheapflights users on 9/2. 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.
Thu 10/19:32 pm -
2 stops22h 53m
Thu 12/311:50 am -
2 stops27h 20m
Deal found 9/2![Multiple Airlines logo]()
$1,159
This FlightHub deal was found by Cheapflights users on 9/2. 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 10/612:18 pm -
2 stops32h 02m
Tue 12/811:25 am -
2 stops26h 08m
Deal found 9/2![Multiple Airlines logo]()
$1,088
This FlightHub deal was found by Cheapflights users on 9/2. 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.
Sun 10/182:30 pm -
2 stops56h 55m
Sat 10/242:55 pm -
2 stops46h 21m
Deal found 9/2![Multiple Airlines logo]()
$1,089
This BusinessClass deal was found by Cheapflights users on 9/5. 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 BusinessClass is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 10/207:03 am -
2 stops40h 22m
Tue 10/273:35 pm -
2 stops38h 59m
Deal found 9/5![Multiple Airlines logo]()
$1,036
This oojo deal was found by Cheapflights users on 9/3. 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.
Wed 10/282:53 pm -
2 stops57h 27m
Mon 11/303:35 pm -
2 stops39h 52m
Deal found 9/3![Multiple Airlines logo]()
$1,066
One-way flights from Portland to Chiang MaiSearch for one-way flight options from Portland to Chiang Mai. Find affordable one-way fares based on user searches. Data last updated September 7, 2026.
Search for one-way flight options from Portland to Chiang Mai. Find affordable one-way fares based on user searches. Data last updated September 7, 2026.
This FlightHub deal was found by Cheapflights users on 9/6. 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.
Mon 11/166:20 am -
2 stops41h 00m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/6![China Eastern logo]()
$542
This Kiwi.com deal was found by Cheapflights users on 9/6. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 11/165:53 pm -
3 stops37h 57m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/6![Multiple Airlines logo]()
$554
This Delta deal was found by Cheapflights users on 9/6. 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.
Wed 1/279:40 am -
2 stops22h 05m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/6![Delta logo]()
$558
This Korean Air deal was found by Cheapflights users on 9/6. 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 Korean Air is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 11/126:20 am -
2 stops25h 25m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/6![Korean Air logo]()
$560
This Kiwi.com deal was found by Cheapflights users on 9/2. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 9/142:30 pm -
3 stops38h 10m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/2![Multiple Airlines logo]()
$568
This Justfly.com deal was found by Cheapflights users on 9/2. 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 Justfly.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 9/146:08 am -
2 stops41h 17m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/2![China Eastern logo]()
$572
This Kiwi.com deal was found by Cheapflights users on 9/2. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/153:33 pm -
3 stops38h 27m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/2![Multiple Airlines logo]()
$575
This Kiwi.com deal was found by Cheapflights users on 9/3. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/1511:06 am -
3 stops54h 19m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/3![Multiple Airlines logo]()
$583
This Kiwi.com deal was found by Cheapflights users on 9/2. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/168:18 pm -
3 stops32h 07m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/2![Multiple Airlines logo]()
$590
This Kiwi.com deal was found by Cheapflights users on 9/5. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 10/46:18 pm -
3 stops38h 32m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/5![Multiple Airlines logo]()
$594
Find 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 September 7, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $961 (FlightHub) |
One-way from | $542 (FlightHub) |
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 7,457,451 searches. Data last updated September 7, 2026.
Use the filters below to find and compare flights from Portland to Chiang Mai that are best for you.
Fly from
Fly to
Route
Depart
Return
Cheapest round-trip
PortlandChiang Mai
PDX Portland - CNX Chiang Mai
PDXCNX
Portland
Mon 11/16
5:53 pm-10:50 pm
3 stops37h 57m
Chiang Mai
Wed 12/31
12:00 am-9:00 am
Nonstop0h 00m
$554
Quickest round-trip
PortlandChiang Mai
PDX Portland - CNX Chiang Mai
PDXCNX
Portland
Wed 1/27
9:40 am-10:45 pm
2 stops22h 05m
Chiang Mai
Wed 12/31
12:00 am-9:00 am
Nonstop0h 00m
$558
PortlandChiang Mai
PDX Portland - CNX Chiang Mai
PDXCNX
Portland
Thu 11/12
6:20 am-10:45 pm
2 stops25h 25m
Chiang Mai
Wed 12/31
12:00 am-9:00 am
Nonstop0h 00m
$560
PortlandChiang Mai
PDX Portland - CNX Chiang Mai
PDXCNX
Portland
Tue 9/15
9:46 pm-6:40 pm
2 stops30h 54m
Chiang Mai
Wed 12/31
12:00 am-9:00 am
Nonstop0h 00m
$585
PortlandChiang Mai
PDX Portland - CNX Chiang Mai
PDXCNX
Portland
Thu 10/15
7:18 am-1:25 pm
2 stops40h 07m
Chiang Mai
Wed 12/31
12:00 am-9:00 am
Nonstop0h 00m
$599
PortlandChiang Mai
PDX Portland - CNX Chiang Mai
PDXCNX
Portland
Wed 1/27
7:00 am-10:35 am
3 stops36h 35m
Chiang Mai
Wed 12/31
12:00 am-9:00 am
Nonstop0h 00m
$685
PortlandChiang Mai
PDX Portland - CNX Chiang Mai
PDXCNX
Portland
Mon 2/22
6:40 am-10:45 pm
2 stops25h 05m
Chiang Mai
Wed 2/24
12:20 am-7:28 pm
2 stops34h 08m
$998
PortlandChiang Mai
PDX Portland - CNX Chiang Mai
PDXCNX
Portland
Tue 10/20
7:03 am-9:15 am
3 stops36h 12m
Chiang Mai
Tue 10/27
4:25 pm-8:33 pm
3 stops42h 08m
$1,053
PortlandChiang Mai
PDX Portland - CNX Chiang Mai
PDXCNX
Portland
Fri 12/4
6:00 am-2:20 pm
2 stops41h 20m
Chiang Mai
Sun 12/20
3:35 pm-8:47 pm
2 stops44h 12m
$1,073
PortlandChiang Mai
PDX Portland - CNX Chiang Mai
PDXCNX
Portland
Thu 10/1
9:35 pm-10:25 am
2 stops46h 50m
Chiang Mai
Thu 10/15
11:35 am-8:50 pm
2 stops23h 15m
$1,145
Showing 1-10 of 15 resultsSorted by cheapest first
Compare providers for flights from Portland to Chiang Mai
Provider information is updated monthly. Please note that these providers often have deals for this flight, but the availability may vary on a day-by-day basis on Cheapflights.
Use the table below to compare price accuracy, trust ratings, and cancellation policies for each provider offering flight deals from Portland to Chiang Mai in September.
| Provider | Price Accuracy | Trust Score* |
|---|---|---|
| Price Accuracy3 stars | Trust Score*3 stars | |
| Price Accuracy3 stars | Trust Score*3 stars | |
| Price Accuracy3 stars | Trust Score*3 stars |
- Most accurate provider: When it comes to deals on Portland-Chiang Mai flights, users find the pricing of FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on Portland-Chiang Mai flight deals on Cheapflights vs. FlightHub >95% of the time. Price accuracy is based on data collected from Portland-Chiang Mai flight searches over the past month and is updated monthly.
- Most trusted provider: When it comes to deals on Portland-Chiang Mai flights, Cheapflights users trust FlightHub the most. FlightHub has received a user feedback score of 3 out of 3 stars (3 being the best), meaning they have been trusted the most by Cheapflights users looking for Portland-Chiang Mai flight deals. Provider user feedback score is based on Cheapflights searches over the past month and is updated monthly.
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.
PDX-CNX
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
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.
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.
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