$440+ 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 15 — Mar 221
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 February 13, 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 13, 2026.
This FlightHub deal was found by Cheapflights users on 2/9. 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 3/53:52 pm
PDX
- CNX
2 stops33h 03m
STARLUX Airlines
Thu 3/124:55 pm
CNX
- PDX
2 stops43h 46m
STARLUX Airlines
Deal found 2/9![STARLUX Airlines logo]()
$841
This SmartFares deal was found by Cheapflights users on 2/9. 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 SmartFares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 5/122:50 pm
PDX
- CNX
2 stops29h 30m
Multiple Airlines
Tue 6/911:20 am
CNX
- PDX
2 stops36h 05m
Multiple Airlines
Deal found 2/9![Multiple Airlines logo]()
$850
This BusinessClass deal was found by Cheapflights users on 2/11. 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 5/185:40 pm
PDX
- CNX
2 stops26h 40m
Multiple Airlines
Mon 6/811:20 am
CNX
- PDX
2 stops25h 43m
Multiple Airlines
Deal found 2/11![Multiple Airlines logo]()
$885
This China Airlines deal was found by Cheapflights users on 2/13. 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.
Mon 3/305:45 pm
PDX
- CNX
2 stops26h 35m
Multiple Airlines
Mon 4/611:20 am
CNX
- PDX
2 stops36h 15m
Multiple Airlines
Deal found 2/13![Multiple Airlines logo]()
$897
This China Airlines deal was found by Cheapflights users on 2/10. 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 China Airlines 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
Sun 5/1011:20 am
CNX
- PDX
2 stops36h 18m
Multiple Airlines
Deal found 2/10![Multiple Airlines logo]()
$903
This BusinessClass deal was found by Cheapflights users on 2/11. 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 5/185:40 pm
PDX
- CNX
2 stops26h 40m
Multiple Airlines
Thu 6/1111:20 am
CNX
- PDX
2 stops25h 19m
Multiple Airlines
Deal found 2/11![Multiple Airlines logo]()
$917
This BusinessClass deal was found by Cheapflights users on 2/12. 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 4/158:46 pm
PDX
- CNX
2 stops23h 34m
Multiple Airlines
Sun 4/2611:20 am
CNX
- PDX
2 stops25h 33m
Multiple Airlines
Deal found 2/12![Multiple Airlines logo]()
$919
This BusinessClass deal was found by Cheapflights users on 2/11. 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 5/185:40 pm
PDX
- CNX
2 stops26h 40m
Multiple Airlines
Sun 6/711:20 am
CNX
- PDX
2 stops25h 43m
Multiple Airlines
Deal found 2/11![Multiple Airlines logo]()
$923
This BusinessClass deal was found by Cheapflights users on 2/11. 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.
Sun 5/175:40 pm
PDX
- CNX
2 stops26h 40m
Multiple Airlines
Mon 6/811:20 am
CNX
- PDX
2 stops25h 43m
Multiple Airlines
Deal found 2/11![Multiple Airlines logo]()
$945
This BusinessClass deal was found by Cheapflights users on 2/11. 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 5/185:40 pm
PDX
- CNX
2 stops26h 40m
Multiple Airlines
Wed 6/1011:20 am
CNX
- PDX
2 stops26h 28m
Multiple Airlines
Deal found 2/11![Multiple Airlines logo]()
$950
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 13, 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 13, 2026.
This FlightHub deal was found by Cheapflights users on 2/9. 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 3/53:52 pm
PDX
- CNX
2 stops33h 03m
STARLUX Airlines
Thu 3/124:55 pm
CNX
- PDX
2 stops43h 46m
STARLUX Airlines
Deal found 2/9![STARLUX Airlines logo]()
$841
This BusinessClass deal was found by Cheapflights users on 2/11. 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 5/185:40 pm
PDX
- CNX
2 stops26h 40m
Multiple Airlines
Tue 6/911:20 am
CNX
- PDX
2 stops25h 43m
Multiple Airlines
Deal found 2/11![Multiple Airlines logo]()
$885
This BusinessClass deal was found by Cheapflights users on 2/11. 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 5/185:40 pm
PDX
- CNX
2 stops26h 40m
Multiple Airlines
Mon 6/811:20 am
CNX
- PDX
2 stops25h 43m
Multiple Airlines
Deal found 2/11![Multiple Airlines logo]()
$885
This China Airlines deal was found by Cheapflights users on 2/13. 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.
Mon 3/305:45 pm
PDX
- CNX
2 stops26h 35m
Multiple Airlines
Mon 4/611:20 am
CNX
- PDX
2 stops36h 15m
Multiple Airlines
Deal found 2/13![Multiple Airlines logo]()
$897
This China Airlines deal was found by Cheapflights users on 2/10. 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 China Airlines 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
Sun 5/1011:20 am
CNX
- PDX
2 stops36h 18m
Multiple Airlines
Deal found 2/10![Multiple Airlines logo]()
$903
This BusinessClass deal was found by Cheapflights users on 2/12. 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 4/158:46 pm
PDX
- CNX
2 stops23h 34m
Multiple Airlines
Sun 4/2611:20 am
CNX
- PDX
2 stops25h 33m
Multiple Airlines
Deal found 2/12![Multiple Airlines logo]()
$919
This BusinessClass deal was found by Cheapflights users on 2/11. 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 5/185:40 pm
PDX
- CNX
2 stops26h 40m
Multiple Airlines
Sun 6/711:20 am
CNX
- PDX
2 stops25h 43m
Multiple Airlines
Deal found 2/11![Multiple Airlines logo]()
$923
This BusinessClass deal was found by Cheapflights users on 2/11. 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.
Sun 5/175:40 pm
PDX
- CNX
2 stops26h 40m
Multiple Airlines
Tue 6/911:20 am
CNX
- PDX
2 stops25h 43m
Multiple Airlines
Deal found 2/11![Multiple Airlines logo]()
$945
This BusinessClass deal was found by Cheapflights users on 2/11. 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 5/185:40 pm
PDX
- CNX
2 stops26h 40m
Multiple Airlines
Wed 6/1011:20 am
CNX
- PDX
2 stops26h 28m
Multiple Airlines
Deal found 2/11![Multiple Airlines logo]()
$950
This BusinessClass deal was found by Cheapflights users on 2/9. 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 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 6/91:40 pm
CNX
- PDX
3 stops24h 31m
Multiple Airlines
Deal found 2/9![Multiple Airlines logo]()
$954
Last-minute flights from Portland to Chiang MaiDiscover last-minute flight deals from Portland to Chiang Mai. Data last updated February 13, 2026 and is based on user searches.
Discover last-minute flight deals from Portland to Chiang Mai. Data last updated February 13, 2026 and is based on user searches.
This BusinessClass deal was found by Cheapflights users on 2/11. 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 2/235:50 pm
PDX
- CNX
2 stops25h 45m
Multiple Airlines
Tue 3/2411:50 am
CNX
- PDX
2 stops25h 54m
Multiple Airlines
Deal found 2/11![Multiple Airlines logo]()
$1,037
This BusinessClass deal was found by Cheapflights users on 2/9. 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 BusinessClass 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 2/9![Multiple Airlines logo]()
$1,036
This oojo deal was found by Cheapflights users on 2/9. 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.
Thu 2/267:05 am
PDX
- CNX
2 stops36h 30m
EVA Air
Sun 3/811:50 am
CNX
- PDX
2 stops34h 59m
EVA Air
Deal found 2/9![EVA Air logo]()
$1,128
This oojo deal was found by Cheapflights users on 2/10. 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 oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 2/289:48 pm
PDX
- CNX
2 stops45h 37m
China Airlines
Wed 3/2511:25 am
CNX
- PDX
2 stops36h 25m
China Airlines
Deal found 2/10![China Airlines logo]()
$1,099
This SmartFares deal was found by Cheapflights users on 2/10. 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 SmartFares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 3/23:52 pm
PDX
- CNX
2 stops27h 33m
Multiple Airlines
Wed 4/111:20 am
CNX
- PDX
2 stops40h 30m
Multiple Airlines
Deal found 2/10![Multiple Airlines logo]()
$992
This IEagle deal was found by Cheapflights users on 2/10. 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 IEagle is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 3/37:05 am
PDX
- CNX
3 stops35h 20m
Multiple Airlines
Wed 4/11:40 pm
CNX
- PDX
3 stops34h 10m
Multiple Airlines
Deal found 2/10![Multiple Airlines logo]()
$1,020
This FlightHub deal was found by Cheapflights users on 2/9. 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 3/53:52 pm
PDX
- CNX
2 stops33h 03m
STARLUX Airlines
Thu 3/124:55 pm
CNX
- PDX
2 stops43h 46m
STARLUX Airlines
Deal found 2/9![STARLUX Airlines logo]()
$841
This IEagle deal was found by Cheapflights users on 2/9. 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 IEagle is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 3/52:47 pm
PDX
- CNX
2 stops28h 48m
Multiple Airlines
Thu 3/122:05 pm
CNX
- PDX
3 stops23h 39m
Multiple Airlines
Deal found 2/9![Multiple Airlines logo]()
$1,014
This China Airlines deal was found by Cheapflights users on 2/13. 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.
Mon 3/305:45 pm
PDX
- CNX
2 stops26h 35m
Multiple Airlines
Mon 4/611:20 am
CNX
- PDX
2 stops36h 15m
Multiple Airlines
Deal found 2/13![Multiple Airlines logo]()
$897
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 13, 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 13, 2026.
This Kiwi.com deal was found by Cheapflights users on 2/11. 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 stops59h 42m
Multiple Airlines
Deal found 2/11![Multiple Airlines logo]()
$440
This BusinessClass deal was found by Cheapflights users on 2/10. 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 BusinessClass 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 2/10![Multiple Airlines logo]()
$502
This IEagle deal was found by Cheapflights users on 2/12. 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 2/267:05 am
PDX
- CNX
3 stops35h 20m
Multiple Airlines
Deal found 2/12![Multiple Airlines logo]()
$540
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 13, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $841 (FlightHub) |
One-way from | $440 (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 13, 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
Thu 3/5
3:52 pm-3:55 pm
2 stops33h 03m
Chiang Mai
Thu 3/12
4:55 pm-10:41 pm
2 stops43h 46m
$841
PortlandChiang Mai
PDX - CNX
PDXCNX
Portland
Mon 5/18
5:40 pm-10:20 am
2 stops26h 40m
Chiang Mai
Tue 6/9
11:20 am-11:03 pm
2 stops25h 43m
$885
PortlandChiang Mai
PDX - CNX
PDXCNX
Portland
Mon 5/18
5:40 pm-10:20 am
2 stops26h 40m
Chiang Mai
Mon 6/8
11:20 am-11:03 pm
2 stops25h 43m
$885
PortlandChiang Mai
PDX - CNX
PDXCNX
Portland
Mon 3/30
5:45 pm-10:20 am
2 stops26h 35m
Chiang Mai
Mon 4/6
11:20 am-9:35 am
2 stops36h 15m
$897
PortlandChiang Mai
PDX - CNX
PDXCNX
Portland
Sat 4/25
9:30 pm-10:20 am
2 stops22h 50m
Chiang Mai
Sun 5/10
11:20 am-9:38 am
2 stops36h 18m
$903
PortlandChiang Mai
PDX - CNX
PDXCNX
Portland
Wed 4/15
8:46 pm-10:20 am
2 stops23h 34m
Chiang Mai
Sun 4/26
11:20 am-10:53 pm
2 stops25h 33m
$919
PortlandChiang Mai
PDX - CNX
PDXCNX
Portland
Mon 5/18
5:40 pm-10:20 am
2 stops26h 40m
Chiang Mai
Sun 6/7
11:20 am-11:03 pm
2 stops25h 43m
$923
PortlandChiang Mai
PDX - CNX
PDXCNX
Portland
Sun 5/17
5:40 pm-10:20 am
2 stops26h 40m
Chiang Mai
Tue 6/9
11:20 am-11:03 pm
2 stops25h 43m
$945
PortlandChiang Mai
PDX - CNX
PDXCNX
Portland
Mon 5/18
5:40 pm-10:20 am
2 stops26h 40m
Chiang Mai
Wed 6/10
11:20 am-11:48 pm
2 stops26h 28m
$950
PortlandChiang Mai
PDX - CNX
PDXCNX
Portland
Tue 5/12
5:51 pm-10:20 am
2 stops26h 29m
Chiang Mai
Tue 6/9
1:40 pm-12:11 am
3 stops24h 31m
$954
Showing 1-10 of 13 results
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.
Cheapflights Insights
Everything you need to know about your flight from Portland to Chiang Mai
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 13, 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.
Boarding
8.4
Entertainment
8.0
Food
8.1
Comfort
8.3
Crew
8.6
Overall
8.4
Reviews
1 / 20
8.0
ExcellentJolene,Jan 2026
SGN - TPE
Boarding
8.4
Entertainment
8.0
Food
8.1
Comfort
8.3
Crew
8.6
Overall
8.4
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.
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.
Alternative routes
Chiang Mai flight routes
Complete your trip
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Popular flights
Alternative routes for Portland to Chiang Mai
See prices for flight routes from nearby airports that may be better suited for you.
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 13, 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 13, 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 13, 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 13, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$963 | Average$1,068 | FlexibilityNo cancel fee | On-time74% |