$399 Cheap Flights from San Francisco (SFO) to Chiang Mai (CNX)

View $399 flight on Wed, Oct 22, 2025Opens in a new window

Popular airlines from San Francisco Intl. Airport (SFO) to Chiang Mai Intl. Airport (CNX)

Find available prices by choosing your travel dates.

Cheap Flights from San Francisco to Chiang Mai (SFO-CNX)

Prices were available within the past 7 days and start at $399 for one-way flights and $710 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

China Eastern Airlines
Mon, May 5 - Wed, May 14
SFO
San Francisco
CNX
Chiang Mai
$710 Roundtrip, found 15 hours ago
$710
Roundtrip
found 15 hours ago
Select China Eastern Airlines flight, departing Mon, May 5 from San Francisco to Chiang Mai, returning Wed, May 14, priced at $710 found 15 hours ago
All Nippon Airways
Tue, Aug 26 - Tue, Sep 9
SFO
San Francisco
CNX
Chiang Mai
$747 Roundtrip, found 4 days ago
$747
Roundtrip
found 4 days ago
Select All Nippon Airways flight, departing Tue, Aug 26 from San Francisco to Chiang Mai, returning Tue, Sep 9, priced at $747 found 4 days ago
All Nippon Airways
Tue, Aug 26 - Tue, Sep 9
SFO
San Francisco
CNX
Chiang Mai
$751 Roundtrip, found 4 days ago
$751
Roundtrip
found 4 days ago
Select All Nippon Airways flight, departing Tue, Aug 26 from San Francisco to Chiang Mai, returning Tue, Sep 9, priced at $751 found 4 days ago
All Nippon Airways
Tue, Aug 26 - Tue, Sep 9
SFO
San Francisco
CNX
Chiang Mai
$752 Roundtrip, found 4 days ago
$752
Roundtrip
found 4 days ago
Select All Nippon Airways flight, departing Tue, Aug 26 from San Francisco to Chiang Mai, returning Tue, Sep 9, priced at $752 found 4 days ago
Korean Air
Mon, Oct 27 - Tue, Nov 11
SFO
San Francisco
CNX
Chiang Mai
$766 Roundtrip, just found
$766
Roundtrip
just found
Select Korean Air flight, departing Mon, Oct 27 from San Francisco to Chiang Mai, returning Tue, Nov 11, priced at $766 just found
Asiana Airlines
Mon, Sep 8 - Tue, Sep 23
SFO
San Francisco
CNX
Chiang Mai
$767 Roundtrip, just found
$767
Roundtrip
just found
Select Asiana Airlines flight, departing Mon, Sep 8 from San Francisco to Chiang Mai, returning Tue, Sep 23, priced at $767 just found
Delta
Mon, Oct 27 - Mon, Nov 17
SFO
San Francisco
CNX
Chiang Mai
$777 Roundtrip, just found
$777
Roundtrip
just found
Select Delta flight, departing Mon, Oct 27 from San Francisco to Chiang Mai, returning Mon, Nov 17, priced at $777 just found
China Airlines
Wed, Nov 19 - Wed, Dec 3
SFO
San Francisco
CNX
Chiang Mai
$792 Roundtrip, found 2 days ago
$792
Roundtrip
found 2 days ago
Select China Airlines flight, departing Wed, Nov 19 from San Francisco to Chiang Mai, returning Wed, Dec 3, priced at $792 found 2 days ago
Cathay Pacific
Tue, May 13 - Tue, May 20
SFO
San Francisco
CNX
Chiang Mai
$812 Roundtrip, found 3 days ago
$812
Roundtrip
found 3 days ago
Select Cathay Pacific flight, departing Tue, May 13 from San Francisco to Chiang Mai, returning Tue, May 20, priced at $812 found 3 days ago
STARLUX Airlines
Tue, Feb 17 - Thu, Mar 5
SFO
San Francisco
CNX
Chiang Mai
$891 Roundtrip, found 1 hour ago
$891
Roundtrip
found 1 hour ago
Select STARLUX Airlines flight, departing Tue, Feb 17 from San Francisco to Chiang Mai, returning Thu, Mar 5, priced at $891 found 1 hour ago

Frequently asked questions

How much does a flight from San Francisco Intl. Airport (SFO) to Chiang Mai Intl. Airport (CNX) cost?
Discover the latest flight deals from SFO to CNX by entering your preferred travel dates and searching on Expedia. Easily compare prices by departure date if you have flexibility with your schedule and use handy filters to explore prices for your preferred journey. As a member of One Key™, our free loyalty program, you can use Price Tracking to watch fares and receive notifications if prices go up or down.
What is the cheapest month to fly from SFO to CNX?
The cheapest flights from SFO to CNX are usually during off-peak season, when demand is lower. To save money, avoid flying during public holidays, school breaks and major local events.
What is the cheapest airline that flies from SFO to CNX?
Use the filter tool on Expedia to compare airlines and find the cheapest carrier that’ll take you from SFO to CNX. Sort your results by “Price (lowest to highest)” to snap up a great deal.
How many flights per day from San Francisco Intl. Airport (SFO) to Chiang Mai Intl. Airport (CNX)?
You’ll have to take a flight with a layover if you’re traveling from San Francisco Intl. Airport (SFO) to Chiang Mai Intl. Airport (CNX). There are no daily direct flights on this route. However, simply filter your search to include one or more stops to discover an option that works for you.
What day of the week has the most flights from SFO to CNX?
You’ll generally find Tuesday the quietest day for flights, while Fridays tend to be the busiest.* However this can vary from season to season and during peak travel times or public holidays.*Busiest/quietest day to travel is based on Expedia flight demand through January to December 2024.
What is the best time to fly from San Francisco Intl. Airport (SFO) to Chiang Mai Intl. Airport (CNX)?
Choose a flight from San Francisco Intl. Airport (SFO) to Chiang Mai Intl. Airport (CNX) that takes off before 3 PM to reduce the likelihood of delays and cancellations. Departures after this hour are on average 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 San Francisco Intl. Airport (SFO) to Chiang Mai Intl. Airport (CNX) last-minute?
Last-minute fares from SFO to CNX are typically more expensive. To secure the cheapest rates, start looking for flights well ahead of time. That said, if you’re flexible with your travel dates, you may find a cheap ticket right before your trip.
Is it cheaper to book a SFO to CNX flight and hotel package?
You’ll generally save money by booking a SFO to CNX flight and hotel package compared to booking separately. In fact, you could save hundreds of dollars by bundling with Expedia. And it’s easy to manage it all in one convenient place. Once you’ve chosen your preferred accommodations and flights, consider adding extras including tours, car rentals and activities.
Can I cancel or change the date of my flight from San Francisco Intl. Airport (SFO) to Chiang Mai Intl. Airport (CNX)?
Typically, you can modify or cancel your SFO to CNX flight. However, there may be additional fees, especially if your booking was made more than 24 hours ago. Double-check your itinerary for the airline’s policies and fees on flight changes, or if you need more details, go to our Customer Service portal.
*Available to One Key members.