$628 Cheap Flights from San José (SJO) to Chiang Mai (CNX)

View $628 flight on Mon, Feb 9, 2026Opens in a new window

Popular airlines from Juan Santamaria Intl. Airport (SJO) to Chiang Mai Intl. Airport (CNX)

Cheap Flights from San José to Chiang Mai (SJO-CNX)

Prices were available within the past 7 days and start at $628 for one-way flights and $1,118 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Alaska Airlines
Sat, Feb 7 - Sun, Feb 15
SJO
San José
CNX
Chiang Mai
$1,118 Roundtrip, found 4 days ago
$1,118
Roundtrip
found 4 days ago
Select Alaska Airlines flight, departing Sat, Feb 7 from San José to Chiang Mai, returning Sun, Feb 15, priced at $1,118 found 4 days ago
Alaska Airlines
Sat, Feb 7 - Sun, Feb 15
SJO
San José
CNX
Chiang Mai
$1,163 Roundtrip, found 4 days ago
$1,163
Roundtrip
found 4 days ago
Select Alaska Airlines flight, departing Sat, Feb 7 from San José to Chiang Mai, returning Sun, Feb 15, priced at $1,163 found 4 days ago
avianca
Sat, Feb 7 - Sun, Feb 15
SJO
San José
CNX
Chiang Mai
$1,170 Roundtrip, found 4 days ago
$1,170
Roundtrip
found 4 days ago
Select avianca flight, departing Sat, Feb 7 from San José to Chiang Mai, returning Sun, Feb 15, priced at $1,170 found 4 days ago
Alaska Airlines
Sat, Feb 7 - Sun, Feb 15
SJO
San José
CNX
Chiang Mai
$1,206 Roundtrip, found 4 days ago
$1,206
Roundtrip
found 4 days ago
Select Alaska Airlines flight, departing Sat, Feb 7 from San José to Chiang Mai, returning Sun, Feb 15, priced at $1,206 found 4 days ago
avianca
Sat, Feb 7 - Sun, Feb 15
SJO
San José
CNX
Chiang Mai
$1,216 Roundtrip, found 4 days ago
$1,216
Roundtrip
found 4 days ago
Select avianca flight, departing Sat, Feb 7 from San José to Chiang Mai, returning Sun, Feb 15, priced at $1,216 found 4 days ago
Alaska Airlines
Sat, Feb 7 - Sun, Feb 15
SJO
San José
CNX
Chiang Mai
$1,251 Roundtrip, found 4 days ago
$1,251
Roundtrip
found 4 days ago
Select Alaska Airlines flight, departing Sat, Feb 7 from San José to Chiang Mai, returning Sun, Feb 15, priced at $1,251 found 4 days ago
avianca
Sat, Feb 7 - Sun, Feb 15
SJO
San José
CNX
Chiang Mai
$1,258 Roundtrip, found 4 days ago
$1,258
Roundtrip
found 4 days ago
Select avianca flight, departing Sat, Feb 7 from San José to Chiang Mai, returning Sun, Feb 15, priced at $1,258 found 4 days ago
avianca
Sat, Feb 7 - Sun, Feb 15
SJO
San José
CNX
Chiang Mai
$1,304 Roundtrip, found 4 days ago
$1,304
Roundtrip
found 4 days ago
Select avianca flight, departing Sat, Feb 7 from San José to Chiang Mai, returning Sun, Feb 15, priced at $1,304 found 4 days ago
KLM
Sun, Feb 15 - Sat, Mar 7
SJO
San José
CNX
Chiang Mai
$2,828 Roundtrip, found 7 hours ago
$2,828
Roundtrip
found 7 hours ago
Select KLM flight, departing Sun, Feb 15 from San José to Chiang Mai, returning Sat, Mar 7, priced at $2,828 found 7 hours ago
Delta
Sun, Feb 15 - Sat, Mar 7
SJO
San José
CNX
Chiang Mai
$5,592 Roundtrip, found 7 hours ago
$5,592
Roundtrip
found 7 hours ago
Select Delta flight, departing Sun, Feb 15 from San José to Chiang Mai, returning Sat, Mar 7, priced at $5,592 found 7 hours ago

Frequently asked questions

How much does a flight from Juan Santamaria Intl. Airport (SJO) to Chiang Mai Intl. Airport (CNX) cost?
Snag a cheap one-way flight from $628 or cheap return flight from $1,118 from Juan Santamaria Intl. Airport (SJO) to Chiang Mai Intl. Airport (CNX) with Expedia. Enter your travel dates and sort by "Price (lowest to highest)" to see our cheapest flight deals on this route.
What is the cheapest month to fly from Juan Santamaria Intl. Airport (SJO) to Chiang Mai Intl. Airport (CNX)?
Flying in February can help you save, as it's the cheapest month for flights between SJO and CNX. You'll often find the lowest fares during off-peak months.
What is the cheapest airline that flies from Juan Santamaria Intl. Airport (SJO) to Chiang Mai Intl. Airport (CNX)?
Use the filter tool on Expedia to compare different airlines and find the cheapest carrier that'll fly you from SJO to CNX. Then, sort your results by "Price (lowest to highest)" to snap up a great deal.
How many flights per day from Juan Santamaria Intl. Airport (SJO) to Chiang Mai Intl. Airport (CNX)?
You'll need to catch a flight with a layover if you're traveling from Juan Santamaria Intl. Airport (SJO) to Chiang Mai Intl. Airport (CNX). There are no daily direct flights on this route. However, just filter your search to include one or more stops to discover the best option for your trip.
What day of the week has the most flights from SJO to CNX?
You'll typically find Tuesday the quietest day for flights, while Fridays are often the busiest.* However this can vary from season to season and during public holidays or peak travel times.*Busiest/quietest day to travel is based on Expedia flight demand through January to December 2024.
What is the best time to fly from Juan Santamaria Intl. Airport (SJO) to Chiang Mai Intl. Airport (CNX)?
To avoid potential delays on the Juan Santamaria Intl. Airport (SJO) to Chiang Mai Intl. Airport (CNX) route, aim to travel before 3 PM. Flights after this time are 22% more likely to be canceled.**Most reliable time of the day and month to travel recommendation is based on January through August 2024 flight status data sourced from OAG's global flight data platform.
Is it cheaper to buy a plane ticket from Juan Santamaria Intl. Airport (SJO) to Chiang Mai Intl. Airport (CNX) last-minute?
Holding off until just before your trip to book your flight from SJO to CNX often results in higher prices. While it's possible to find some last-minute discounts, they aren't always guaranteed. Allow some flexibility in your schedule for the best chance of getting a bargain.
Is it cheaper to book a SJO to CNX flight and hotel package?
Securing a SJO to CNX flight and hotel package tends to be cheaper than booking separately. With Expedia, you can enjoy the ease of organizing your travels in one place. Select from our wide range of accommodations and then add car rentals, flights and activities to your booking. Bundle everything together, and you could save hundreds of dollars.
Can I cancel or change the date of my flight from Juan Santamaria Intl. Airport (SJO) to Chiang Mai Intl. Airport (CNX)?
In most instances, you can cancel or modify your SJO to CNX flight. However, additional charges may apply, especially if you made your booking over 24 hours ago. Double-check your itinerary for the airline's fees and guidelines on flight changes, or if you need more information, head to our Customer Service portal.

Travel information

Origin airport
Juan Santamaría Intl.
Destination airport
Chiang Mai Intl.
Airlines serving
Delta
Roundtrip price
$1,117
Distance
10436 mi

Book with confidence

San José to Chiang Mai Flights

The cheapest times to fly from San José to Chiang Mai

On average, Thursday can be the cheapest time to fly, according to data from the Airlines Reporting Corporation (ARC), one of the world's biggest databases for global airline sales. The data reveals that you could save up to 16% by flying on a Thursday—the cheapest day to travel on average—instead of a Sunday—the most expensive. Some of the most affordable flights from San José to Chiang Mai are during the month of February. You can find some of the cheapest flights from San José to Chiang Mai with Expedia's search tool and vast selection of airlines.

 

The best time to book a flight from San José to Chiang Mai

Sunday is one of the best days to book for cheap flights from San José to Chiang Mai: Tickets reserved on a Sunday cost between 6% and 13% less than those reserved on a Friday, according to ARC data. The data also suggests booking early can also lead to cheaper airfares. You could save 24% by buying your tickets for domestic flights at least a month in advance and 10% by booking international flights 2 months in advance.

 

How to find cheap round-trip tickets from San José to Chiang Mai

Being flexible with your dates and using Expedia's Price Drop Protection and Price Tracking features are some of the best ways of finding a cheap ticket from San José to Chiang Mai in 2025. You can also book with separate airlines for your outbound and return journeys, from $628 one-way. Expedia also offers Price Drop Protection, so if the cost of your airfare goes down after booking, you'll receive a credit for the difference*. This is available for a small fee, and is free to One Key Gold and Platinum tier members.

 

Expedia's Price Tracking feature means you can stay on top of airfares without manually checking every day. It sends you automated price alerts for cheap San José to Chiang Mai flights and uses historical data to indicate when the best time to book is. Download Expedia's free app to activate this handy tool in a few easy taps.

 

You could also save big by booking one of Expedia's vacation packages. Bundling together your San José to Chiang Mai airfare with your accommodations and car rental is often cheaper than booking everything separately. There’s also One Key, Expedia's generous rewards program. Join for free and you could earn One Key cash on most bookings to save on future adventures.

 

*Terms apply.

 

Disclaimer: ARC The statistics are based on average round-trip ticket prices between January and August 2023. The percentages you see are averages.

 

San José to Chiang Mai Flights

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*Available to One Key members.