$433+ Cheap flights from Portland (PDX) to Chiang Mai (CNX)
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 3/15. Fares are subject to change and may not be available on all flights or dates of travel.
PDX — CNX
Mar 26 — Apr 21
1 adult, Economy
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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
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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
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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 February 24, 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 February 24, 2026.
This Gurufare deal was found by Cheapflights users on 2/22. 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 Gurufare is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 5/48:30 pm
PDX
- CNX
2 stops23h 50m
Multiple Airlines
Mon 5/1811:20 am
CNX
- PDX
2 stops25h 44m
Multiple Airlines
Deal found 2/22![Multiple Airlines logo]()
$807
This BusinessClass deal was found by Cheapflights users on 2/20. 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 5/125:51 pm
PDX
- CNX
2 stops26h 29m
Multiple Airlines
Tue 6/911:20 am
CNX
- PDX
2 stops25h 44m
Multiple Airlines
Deal found 2/20![Multiple Airlines logo]()
$857
This IEagle deal was found by Cheapflights users on 2/22. 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.
Mon 4/202:37 pm
PDX
- CNX
2 stops29h 43m
Multiple Airlines
Mon 5/411:20 am
CNX
- PDX
2 stops37h 36m
Multiple Airlines
Deal found 2/22![Multiple Airlines logo]()
$878
This oojo deal was found by Cheapflights users on 2/23. 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.
Mon 4/202:37 pm
PDX
- CNX
2 stops29h 43m
China Airlines
Mon 5/411:20 am
CNX
- PDX
2 stops36h 18m
China Airlines
Deal found 2/23![China Airlines logo]()
$908
This Travelocity deal was found by Cheapflights users on 2/20. 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 Travelocity is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 3/161:36 pm
PDX
- CNX
2 stops30h 49m
Multiple Airlines
Thu 4/3011:20 am
CNX
- PDX
2 stops34h 41m
Multiple Airlines
Deal found 2/20![Multiple Airlines logo]()
$917
This China Airlines deal was found by Cheapflights users on 2/21. 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 China Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 4/252:55 pm
PDX
- CNX
2 stops29h 25m
Multiple Airlines
Sun 5/1011:20 am
CNX
- PDX
2 stops36h 18m
Multiple Airlines
Deal found 2/21![Multiple Airlines logo]()
$921
This Gurufare deal was found by Cheapflights users on 2/20. 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 Gurufare is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 3/165:39 pm
PDX
- CNX
2 stops26h 46m
Multiple Airlines
Wed 4/2911:20 am
CNX
- PDX
2 stops23h 21m
Multiple Airlines
Deal found 2/20![Multiple Airlines logo]()
$932
This IEagle deal was found by Cheapflights users on 2/20. 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.
Mon 4/69:30 pm
PDX
- CNX
2 stops49h 55m
Multiple Airlines
Mon 4/132:55 pm
CNX
- PDX
2 stops39h 35m
Multiple Airlines
Deal found 2/20![Multiple Airlines logo]()
$943
This BusinessClass deal was found by Cheapflights users on 2/22. 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.
Wed 4/88:46 pm
PDX
- CNX
2 stops23h 34m
Multiple Airlines
Wed 4/1511:20 am
CNX
- PDX
2 stops25h 11m
Multiple Airlines
Deal found 2/22![Multiple Airlines logo]()
$977
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 February 24, 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 February 24, 2026.
This Gurufare deal was found by Cheapflights users on 2/22. 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 Gurufare is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 5/48:30 pm
PDX
- CNX
2 stops23h 50m
Multiple Airlines
Mon 5/1811:20 am
CNX
- PDX
2 stops25h 44m
Multiple Airlines
Deal found 2/22![Multiple Airlines logo]()
$807
This BusinessClass deal was found by Cheapflights users on 2/20. 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 5/125:51 pm
PDX
- CNX
2 stops26h 29m
Multiple Airlines
Tue 6/911:20 am
CNX
- PDX
2 stops25h 44m
Multiple Airlines
Deal found 2/20![Multiple Airlines logo]()
$857
This China Airlines deal was found by Cheapflights users on 2/21. 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 China Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 4/252:55 pm
PDX
- CNX
2 stops29h 25m
Multiple Airlines
Sun 5/1011:20 am
CNX
- PDX
2 stops36h 18m
Multiple Airlines
Deal found 2/21![Multiple Airlines logo]()
$921
This BusinessClass deal was found by Cheapflights users on 2/22. 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.
Wed 4/88:46 pm
PDX
- CNX
2 stops23h 34m
Multiple Airlines
Wed 4/1511:20 am
CNX
- PDX
2 stops25h 11m
Multiple Airlines
Deal found 2/22![Multiple Airlines logo]()
$977
This Gurufare deal was found by Cheapflights users on 2/20. 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 Gurufare is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 3/165:39 pm
PDX
- CNX
2 stops26h 46m
Multiple Airlines
Tue 4/2811:20 am
CNX
- PDX
2 stops25h 33m
Multiple Airlines
Deal found 2/20![Multiple Airlines logo]()
$1,002
Last-minute flights from Portland to Chiang MaiDiscover last-minute flight deals from Portland to Chiang Mai. Data last updated February 24, 2026 and is based on user searches.
Discover last-minute flight deals from Portland to Chiang Mai. Data last updated February 24, 2026 and is based on user searches.
This Gurufare deal was found by Cheapflights users on 2/20. 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 Gurufare is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 2/269:48 pm
PDX
- CNX
2 stops45h 47m
Multiple Airlines
Sun 3/87:45 pm
CNX
- PDX
3 stops41h 59m
Multiple Airlines
Deal found 2/20![Multiple Airlines logo]()
$1,150
This oojo deal was found by Cheapflights users on 2/20. 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.
Thu 2/267:05 am
PDX
- CNX
2 stops36h 30m
EVA Air
Sun 3/811:50 am
CNX
- PDX
2 stops24h 51m
EVA Air
Deal found 2/20![EVA Air logo]()
$1,169
This Travelocity deal was found by Cheapflights users on 2/20. 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 Travelocity is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 3/161:36 pm
PDX
- CNX
2 stops30h 49m
Multiple Airlines
Thu 4/3011:20 am
CNX
- PDX
2 stops34h 41m
Multiple Airlines
Deal found 2/20![Multiple Airlines logo]()
$917
This Gurufare deal was found by Cheapflights users on 2/20. 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 Gurufare is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 3/165:39 pm
PDX
- CNX
2 stops26h 46m
Multiple Airlines
Wed 4/2911:20 am
CNX
- PDX
2 stops23h 21m
Multiple Airlines
Deal found 2/20![Multiple Airlines logo]()
$932
This Gurufare deal was found by Cheapflights users on 2/20. 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 Gurufare is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 3/165:39 pm
PDX
- CNX
2 stops26h 46m
Multiple Airlines
Tue 4/2811:20 am
CNX
- PDX
2 stops25h 33m
Multiple Airlines
Deal found 2/20![Multiple Airlines logo]()
$1,002
This Gurufare deal was found by Cheapflights users on 2/20. 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 Gurufare is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 3/167:16 am
PDX
- CNX
2 stops41h 04m
Multiple Airlines
Fri 5/12:55 pm
CNX
- PDX
2 stops56h 43m
Multiple Airlines
Deal found 2/20![Multiple Airlines logo]()
$1,022
This KAYAK deal was found by Cheapflights users on 2/20. 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 KAYAK is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 3/166:15 am
PDX
- CNX
2 stops42h 05m
China Eastern
Sun 5/32:55 pm
CNX
- PDX
2 stops38h 43m
China Eastern
Deal found 2/20![China Eastern logo]()
$1,430
This Qatar Airways deal was found by Cheapflights users on 2/20. 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 Qatar Airways is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 3/1610:30 am
PDX
- CNX
3 stops32h 55m
Qatar Airways
Thu 4/308:00 pm
CNX
- PDX
3 stops38h 35m
Qatar Airways
Deal found 2/20![Qatar Airways logo]()
$1,679
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 February 24, 2026.
Search for one-way flight options from Portland to Chiang Mai. Find affordable one-way fares based on user searches. Data last updated February 24, 2026.
This Kiwi.com deal was found by Cheapflights users on 2/20. 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 3/1510:08 am
PDX
- CNX
3 stops55h 52m
Multiple Airlines
Deal found 2/20![Multiple Airlines logo]()
$433
This Kiwi.com deal was found by Cheapflights users on 2/21. 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.
Sat 3/1410:24 am
PDX
- CNX
3 stops55h 36m
Multiple Airlines
Deal found 2/21![Multiple Airlines logo]()
$454
This Gurufare deal was found by Cheapflights users on 2/23. 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 Gurufare is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 4/259:30 pm
PDX
- CNX
2 stops22h 50m
Multiple Airlines
Deal found 2/23![Multiple Airlines logo]()
$470
This Kiwi.com deal was found by Cheapflights users on 2/21. 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.
Sat 8/85:34 pm
PDX
- CNX
3 stops30h 06m
Multiple Airlines
Deal found 2/21![Multiple Airlines logo]()
$481
This CheapOair deal was found by Cheapflights users on 2/22. 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.
Sat 8/86:30 am
PDX
- CNX
3 stops36h 45m
China Eastern
Deal found 2/22![China Eastern logo]()
$652
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 February 24, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $807 (Gurufare) |
One-way from | $433 (Kiwi.com) |
Popular in | June |
Cheapest in | November |
Average price | $1,068 |
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 2,558,603 searches. Data last updated February 24, 2026.
Use the filters below to find and compare flights from Portland to Chiang Mai that are best for you.
Fly from
Portland
Fly to
Chiang Mai
Route
Depart
Return
Price
PortlandChiang Mai
PDX - CNX
PDXCNX
Portland
Mon 5/4
8:30 pm-10:20 am
2 stops23h 50m
Chiang Mai
Mon 5/18
11:20 am-11:04 pm
2 stops25h 44m
$807
PortlandChiang Mai
PDX - CNX
PDXCNX
Portland
Tue 5/12
5:51 pm-10:20 am
2 stops26h 29m
Chiang Mai
Tue 6/9
11:20 am-11:04 pm
2 stops25h 44m
$857
PortlandChiang Mai
PDX - CNX
PDXCNX
Portland
Sat 4/25
2:55 pm-10:20 am
2 stops29h 25m
Chiang Mai
Sun 5/10
11:20 am-9:38 am
2 stops36h 18m
$921
PortlandChiang Mai
PDX - CNX
PDXCNX
Portland
Wed 4/8
8:46 pm-10:20 am
2 stops23h 34m
Chiang Mai
Wed 4/15
11:20 am-10:31 pm
2 stops25h 11m
$977
PortlandChiang Mai
PDX - CNX
PDXCNX
Portland
Mon 3/16
5:39 pm-10:25 am
2 stops26h 46m
Chiang Mai
Tue 4/28
11:20 am-10:53 pm
2 stops25h 33m
$1,002
PortlandChiang Mai
PDX - CNX
PDXCNX
Portland
Sat 4/25
9:30 pm-10:20 am
2 stops22h 50m
$470
PortlandChiang Mai
PDX - CNX
PDXCNX
Portland
Sat 8/8
5:34 pm-10:20 am
2 stops26h 46m
$497
PortlandChiang Mai
PDX - CNX
PDXCNX
Portland
Sat 3/14
5:50 pm-4:35 pm
2 stops32h 45m
$531
PortlandChiang Mai
PDX - CNX
PDXCNX
Portland
Sat 8/8
6:30 am-9:15 am
3 stops36h 45m
$652
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 February.
| Provider | Price Accuracy | Trust Score* |
|---|---|---|
| Price Accuracy3 stars | Trust Score*3 stars | |
| Price Accuracy2 stars | Trust Score*3 stars | |
| Price Accuracy2 stars | Trust Score*2 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.
Reviews of airlines servicing Chiang Mai
Get insights into the airlines that provide service to Chiang Mai. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to Chiang Mai. Reviews last updated February 24, 2026.
See what other customers who have flown with EVA Air from Portland to Chiang Mai have to say. You can also see how each airline compares in terms of entertainment options, comfort, food, crew/service, and boarding process.
Crew
8.6
Overall
8.4
Boarding
8.4
Food
8.1
Entertainment
8.0
Comfort
8.3
Reviews
1 / 20
8.0
ExcellentJolene,Jan 2026
SGN - TPE
Crew
8.6
Overall
8.4
Boarding
8.4
Food
8.1
Entertainment
8.0
Comfort
8.3
Reviews
1 / 20
8.0
ExcellentJolene,Jan 2026
SGN - TPE
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.
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Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.
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Other flights to Chiang Mai
Explore flights to Chiang Mai departing from other origins. Flights are based on user searches made on Cheapflights and were last updated on February 24, 2026.
Complete your trip
Complete your trip to Chiang Mai by adding a car rental and/or hotel reservation to your travel itinerary.
Search flights from Portland to Chiang Mai by cabin class
Find flights from Portland to Chiang Mai, based on your preferred cabin class, be it economy, premium economy, business, or first class.
Portland and Chiang Mai flights
Browse other Portland and Chiang Mai flight options. Last updated on February 24, 2026.
Other flights from Portland
Browse through other flights departing from Portland. Flights are based on user searches made on Cheapflights and were last updated on February 24, 2026.
Popular flight searches
Check out other popular destinations found by fellow travelers in 2026
Top airline flying from Portland to Chiang Mai
Discover the top airline that operate flights from Portland to Chiang Mai. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated February 24, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$963 | Average$1,068 | FlexibilityNo cancel fee | On-time74% |