$516+ 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 4/27. Fares are subject to change and may not be available on all flights or dates of travel.
PDX — CNX
May 10 — May 171
Round-trip
1 adult, Economy
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Find cheap flights from Portland to Chiang Mai with Cheapflights
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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
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 April 10, 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 April 10, 2026.
This FlightHub deal was found by Cheapflights users on 4/6. 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.
Tue 9/155:50 pm
PDX
- CNX
2 stops26h 30m
Multiple Airlines
Tue 9/2911:20 am
CNX
- PDX
2 stops34h 53m
Multiple Airlines
Deal found 4/6![Multiple Airlines logo]()
$938
This FlightHub deal was found by Cheapflights users on 4/6. 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 8/311:59 pm
PDX
- CNX
2 stops30h 21m
Multiple Airlines
Sat 9/511:20 am
CNX
- PDX
2 stops36h 05m
Multiple Airlines
Deal found 4/6![Multiple Airlines logo]()
$947
This oojo deal was found by Cheapflights users on 4/8. 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 4/277:18 pm
PDX
- CNX
2 stops25h 02m
China Airlines
Mon 5/411:20 am
CNX
- PDX
2 stops43h 02m
China Airlines
Deal found 4/8![China Airlines logo]()
$952
This oojo deal was found by Cheapflights users on 4/6. 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 oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/145:55 pm
PDX
- CNX
2 stops26h 25m
China Airlines
Wed 10/2811:25 am
CNX
- PDX
2 stops36h 00m
China Airlines
Deal found 4/6![China Airlines logo]()
$959
This FlightHub deal was found by Cheapflights users on 4/8. 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 8/246:50 pm
PDX
- CNX
2 stops25h 30m
Multiple Airlines
Mon 8/3111:20 am
CNX
- PDX
2 stops37h 07m
Multiple Airlines
Deal found 4/8![Multiple Airlines logo]()
$971
This oojo deal was found by Cheapflights users on 4/7. 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 9/75:35 pm
PDX
- CNX
2 stops26h 45m
China Airlines
Sat 9/1911:20 am
CNX
- PDX
2 stops37h 07m
China Airlines
Deal found 4/7![China Airlines logo]()
$988
This Justfly.com deal was found by Cheapflights users on 4/8. 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.
Sat 4/257:18 pm
PDX
- CNX
2 stops25h 02m
Multiple Airlines
Sun 5/1011:20 am
CNX
- PDX
2 stops36h 18m
Multiple Airlines
Deal found 4/8![Multiple Airlines logo]()
$1,011
This IEagle deal was found by Cheapflights users on 4/6. 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 IEagle is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/149:40 pm
PDX
- CNX
2 stops46h 45m
Multiple Airlines
Wed 10/282:05 pm
CNX
- PDX
3 stops22h 39m
Multiple Airlines
Deal found 4/6![Multiple Airlines logo]()
$1,042
This oojo deal was found by Cheapflights users on 4/6. 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 oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 4/257:18 pm
PDX
- CNX
2 stops25h 02m
China Airlines
Sun 5/1011:20 am
CNX
- PDX
2 stops36h 10m
China Airlines
Deal found 4/6![China Airlines logo]()
$1,043
This FlightHub deal was found by Cheapflights users on 4/8. 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 12/313:40 pm
PDX
- CNX
2 stops27h 45m
Multiple Airlines
Sat 2/1311:25 am
CNX
- PDX
2 stops26h 19m
Multiple Airlines
Deal found 4/8![Multiple Airlines logo]()
$1,047
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 April 10, 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 April 10, 2026.
This oojo deal was found by Cheapflights users on 4/8. 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 4/277:18 pm
PDX
- CNX
2 stops25h 02m
China Airlines
Mon 5/411:20 am
CNX
- PDX
2 stops43h 02m
China Airlines
Deal found 4/8![China Airlines logo]()
$952
This Justfly.com deal was found by Cheapflights users on 4/8. 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.
Sat 4/257:18 pm
PDX
- CNX
2 stops25h 02m
Multiple Airlines
Sun 5/1011:20 am
CNX
- PDX
2 stops36h 18m
Multiple Airlines
Deal found 4/8![Multiple Airlines logo]()
$1,011
This Qatar Airways deal was found by Cheapflights users on 4/10. 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.
Sat 4/258:45 am
PDX
- CNX
3 stops39h 00m
Qatar Airways
Sun 5/108:00 pm
CNX
- PDX
3 stops37h 34m
Qatar Airways
Deal found 4/10![Qatar Airways logo]()
$1,366
This oojo deal was found by Cheapflights users on 4/6. 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 oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 4/257:18 pm
PDX
- CNX
2 stops25h 02m
China Airlines
Sun 5/1011:20 am
CNX
- PDX
2 stops36h 10m
China Airlines
Deal found 4/6![China Airlines logo]()
$1,043
This KAYAK deal was found by Cheapflights users on 4/6. 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 KAYAK is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 4/279:30 pm
PDX
- CNX
2 stops22h 50m
Multiple Airlines
Thu 4/3011:20 am
CNX
- PDX
2 stops36h 04m
Multiple Airlines
Deal found 4/6![Multiple Airlines logo]()
$1,299
This Ovago deal was found by Cheapflights users on 4/5. 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 Ovago is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 5/207:00 am
PDX
- CNX
2 stops37h 25m
Multiple Airlines
Wed 5/2711:35 am
CNX
- PDX
2 stops40h 15m
Multiple Airlines
Deal found 4/5![Multiple Airlines logo]()
$1,376
Last-minute flights from Portland to Chiang MaiDiscover last-minute flight deals from Portland to Chiang Mai. Data last updated April 10, 2026 and is based on user searches.
Discover last-minute flight deals from Portland to Chiang Mai. Data last updated April 10, 2026 and is based on user searches.
This Justfly.com deal was found by Cheapflights users on 4/8. 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.
Sat 4/257:18 pm
PDX
- CNX
2 stops25h 02m
Multiple Airlines
Sun 5/1011:20 am
CNX
- PDX
2 stops36h 18m
Multiple Airlines
Deal found 4/8![Multiple Airlines logo]()
$1,011
This oojo deal was found by Cheapflights users on 4/6. 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 oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 4/257:18 pm
PDX
- CNX
2 stops25h 02m
China Airlines
Sun 5/1011:20 am
CNX
- PDX
2 stops36h 10m
China Airlines
Deal found 4/6![China Airlines logo]()
$1,043
This oojo deal was found by Cheapflights users on 4/9. 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.
Sat 4/257:18 pm
PDX
- CNX
2 stops25h 07m
EVA Air
Sun 5/1011:35 am
CNX
- PDX
2 stops46h 25m
EVA Air
Deal found 4/9![EVA Air logo]()
$1,055
This oojo deal was found by Cheapflights users on 4/8. 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 4/277:18 pm
PDX
- CNX
2 stops25h 02m
China Airlines
Mon 5/411:20 am
CNX
- PDX
2 stops43h 02m
China Airlines
Deal found 4/8![China Airlines logo]()
$952
This IEagle deal was found by Cheapflights users on 4/8. 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 4/275:51 pm
PDX
- CNX
3 stops29h 54m
Multiple Airlines
Mon 5/411:20 am
CNX
- PDX
2 stops25h 33m
Multiple Airlines
Deal found 4/8![Multiple Airlines logo]()
$1,270
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 April 10, 2026.
Search for one-way flight options from Portland to Chiang Mai. Find affordable one-way fares based on user searches. Data last updated April 10, 2026.
This Justfly.com deal was found by Cheapflights users on 4/8. 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 4/277:18 pm
PDX
- CNX
2 stops25h 02m
Multiple Airlines
Deal found 4/8![Multiple Airlines logo]()
$516
This Justfly.com deal was found by Cheapflights users on 4/6. 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 Justfly.com 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 4/6![Multiple Airlines logo]()
$554
This Qatar Airways deal was found by Cheapflights users on 4/10. 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.
Sat 4/2511:59 am
PDX
- CNX
3 stops35h 46m
Qatar Airways
Deal found 4/10![Qatar Airways logo]()
$741
This Kiwi.com deal was found by Cheapflights users on 4/6. 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 6/159:48 pm
PDX
- CNX
3 stops44h 07m
Multiple Airlines
Deal found 4/6![Multiple Airlines logo]()
$866
This Kiwi.com deal was found by Cheapflights users on 4/6. 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.
Wed 6/179:48 pm
PDX
- CNX
2 stops58h 12m
Multiple Airlines
Deal found 4/6![Multiple Airlines logo]()
$903
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 April 10, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $938 (FlightHub) |
One-way from | $516 (Justfly.com) |
Popular in | June |
Cheapest in | November |
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 April 10, 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 - CNX
PDXCNX
Portland
Mon 4/27
7:18 pm-10:20 am
2 stops25h 02m
Chiang Mai
Mon 5/4
11:20 am-4:22 pm
2 stops43h 02m
$952
PortlandChiang Mai
PDX - CNX
PDXCNX
Portland
Sat 4/25
7:18 pm-10:20 am
2 stops25h 02m
Chiang Mai
Sun 5/10
11:20 am-9:38 am
2 stops36h 18m
$1,011
PortlandChiang Mai
PDX - CNX
PDXCNX
Portland
Sat 4/25
7:18 pm-10:20 am
2 stops25h 02m
Chiang Mai
Sun 5/10
11:20 am-9:30 am
2 stops36h 10m
$1,043
Quickest round-trip
PortlandChiang Mai
PDX - CNX
PDXCNX
Portland
Mon 4/27
9:30 pm-10:20 am
2 stops22h 50m
Chiang Mai
Thu 4/30
11:20 am-9:24 am
2 stops36h 04m
$1,299
PortlandChiang Mai
PDX - CNX
PDXCNX
Portland
Sat 4/25
8:45 am-1:45 pm
3 stops39h 00m
Chiang Mai
Sun 5/10
8:00 pm-7:34 pm
3 stops37h 34m
$1,366
PortlandChiang Mai
PDX - CNX
PDXCNX
Portland
Wed 5/20
7:00 am-10:25 am
2 stops37h 25m
Chiang Mai
Wed 5/27
11:35 am-1:50 pm
2 stops40h 15m
$1,376
Cheapest one-way
PortlandChiang Mai
PDX - CNX
PDXCNX
Portland
Mon 4/27
7:18 pm-10:20 am
2 stops25h 02m
$516
Quickest one-way
PortlandChiang Mai
PDX - CNX
PDXCNX
Portland
Sat 4/25
9:30 pm-10:20 am
2 stops22h 50m
$554
PortlandChiang Mai
PDX - CNX
PDXCNX
Portland
Sat 4/25
11:59 am-1:45 pm
3 stops35h 46m
$741
Sorted 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 April.
| 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 April 10, 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.
Entertainment
8.0
Boarding
8.4
Food
8.1
Overall
8.5
Crew
8.7
Comfort
8.3
Reviews
1 / 20
10.0
ExcellentAnonymous,Mar 2026
CRK - TPE
Entertainment
8.0
Boarding
8.4
Food
8.1
Overall
8.5
Crew
8.7
Comfort
8.3
Reviews
1 / 20
10.0
ExcellentAnonymous,Mar 2026
CRK - 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.
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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Alternative routes for Portland to Chiang Mai
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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 April 10, 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 April 10, 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 April 10, 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 April 10, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$963 | Average$1,030 | FlexibilityNo cancel fee | On-time74% |