Cheap flights from Seattle (SEA) to Chiang Mai (CNX)

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The best prices from Seattle/Tacoma Intl to Chiang Mai are usually found in April or March, booked 60 days in advance, depart on a Tuesday or Wednesday and return on a Friday

How to find the cheapest flight from
Seattle (SEA) to Chiang Mai (CNX)

All the information you need to plan the best SEA to CNX flight in 2021: compare Seattle to Chiang Mai flight prices with the expected peak season, weather and rainfall in Chiang Mai.
SEA - CNX
Price
$685 - $1,076
CNX
Temperature
69.8 - 84.2 °F
CNX
Precipitation
0 - 9.8 inches

Popular in

June

High demand for flights, 25% potential price rise

Cheapest in

April

Best time to find cheap flights, 16% potential price drop

Round-trip from

$685

From Seattle/Tacoma Intl to Chiang Mai

One-way from

$580

One-way flight from Seattle/Tacoma Intl to Chiang Mai

Flight route prices based on searches on Cheapflights within the last 3 days, monthly prices based on aggregated historical data.
What is the cheapest day to fly round-trip from Seattle to Chiang Mai?

Thursday flights are found to be more expensive to fly from Seattle to Chiang Mai. This shouldn’t discourage you from searching, as you can still find great deals by being flexible with your options. Use our search form to find deals on tickets to Chiang Mai.

How far in advance should I book a flight from Seattle to Chiang Mai?

To save up to 15% on this flight, we recommend booking at least 61 days prior to travel. The price may fluctuate and will likely increase closer to your departure date. Users on Cheapflights have found tickets from Seattle to Chiang Mai from $914 1-2 weeks out and tickets from $939 for flights departing within the next 72 hours.

What is the cheapest month to fly from Seattle to Chiang Mai?

The best pricing can be found in the month of April. Prices to Chiang Mai from Seattle average $812. You can even find prices in April for less than $812, as users have found deals to Chiang Mai from as low as $654. The month of June appears to be one of the more expensive times to travel to Chiang Mai from Seattle. Flying in the targeted month can save you up to 32%.

When is the cheapest time to fly from Seattle to Chiang Mai (SEA - CNX)?

It’s optimal to fly from Seattle to Chiang Mai in the afternoon. By choosing this option you can save up to 7% on the cost of your flight, compared to a flight at noon.

Cheap flights from Seattle to Chiang Mai in December, January 2022

The best prices found for SEA to CNX flights for December, January
19 Jan - 22 Feb
$1,031pp
SEA
Seattle/Tacoma Intl
Multiple Airlines
   
2 STOPS
CNX
Chiang Mai
CNX
Chiang Mai
Multiple Airlines
   
2 STOPS
SEA
Seattle/Tacoma Intl
20 Jan - 22 Feb
$1,160pp
SEA
Seattle/Tacoma Intl
Multiple Airlines
   
2 STOPS
CNX
Chiang Mai
CNX
Chiang Mai
Multiple Airlines
     
3 STOPS
SEA
Seattle/Tacoma Intl
19 Jan - 22 Feb
$1,166pp
SEA
Seattle/Tacoma Intl
Multiple Airlines
     
3 STOPS
CNX
Chiang Mai
CNX
Chiang Mai
Multiple Airlines
     
3 STOPS
SEA
Seattle/Tacoma Intl

Seattle/Tacoma Intl to Chiang Mai 2022 flight deals

Cheap flights to Chiang Mai from Seattle found for this year
24 Dec - 7 Jan
$1,517pp
SEA
Seattle/Tacoma Intl
Thai Airways
   
2 STOPS
CNX
Chiang Mai
CNX
Chiang Mai
Thai Airways
   
2 STOPS
SEA
Seattle/Tacoma Intl
22 Dec - 7 Jan
$1,603pp
SEA
Seattle/Tacoma Intl
Thai Airways
   
2 STOPS
CNX
Chiang Mai
CNX
Chiang Mai
Thai Airways
   
2 STOPS
SEA
Seattle/Tacoma Intl
24 Dec - 7 Jan
$1,825pp
SEA
Seattle/Tacoma Intl
Thai Airways
   
2 STOPS
CNX
Chiang Mai
CNX
Chiang Mai
Thai Airways
   
2 STOPS
SEA
Seattle/Tacoma Intl

Last minute flights from Seattle to Chiang Mai

Late deals on round-trip flights to Chiang Mai from Seattle, departing today and this week
13 Dec - 19 Dec
$2,019pp
SEA
Seattle/Tacoma Intl
Multiple Airlines
     
3 STOPS
CNX
Chiang Mai
CNX
Chiang Mai
Multiple Airlines
     
3 STOPS
SEA
Seattle/Tacoma Intl
13 Dec - 19 Dec
$2,046pp
SEA
Seattle/Tacoma Intl
Multiple Airlines
     
3 STOPS
CNX
Chiang Mai
CNX
Chiang Mai
Emirates
   
2 STOPS
SEA
Seattle/Tacoma Intl
13 Dec - 19 Dec
$3,559pp
SEA
Seattle/Tacoma Intl
Multiple Airlines
   
2 STOPS
CNX
Chiang Mai
CNX
Chiang Mai
Emirates
   
2 STOPS
SEA
Seattle/Tacoma Intl

One-way flights to Chiang Mai from Seattle

The cheapest one-way flights from Seattle to Chiang Mai
9:30 pm - 6:25 am
EVA Air
1 Stop
18h 55m
SEA - CNX
EVA Air
$580
SmartFares
3:00 am - 2:15 pm
Japan Airlines
3 Stops
45h 15m
SEA - CNX
Japan Airlines
$696
KAYAK

Related info for your journey

Useful info, stats and facts about <span class="emphasized">Seattle</span> to <span class="emphasized">Chiang Mai</span> flights.

Flight FAQs

From Seattle to Chiang Mai

Which airlines flying from Seattle/Tacoma Intl to Chiang Mai have flexible cancellations due to COVID-19?

Some of the carriers operating flights from Seattle/Tacoma Intl to Chiang Mai that may be offering flexible cancellation policies are EVA Air, Korean Air, and Cathay Pacific. Our site will let you filter for all airlines offering greater flexibility due to COVID-19.

Can I find flights from Seattle to Chiang Mai for under $900 on Cheapflights?

Yes, there are multiple flights from Seattle to Chiang Mai for under $900. The cheapest flight booked recently is on Multiple Airlines for just $844, but on average you can expect to pay $1,118.

Are there last-minute flights available from Seattle to Chiang Mai for under $2,100?

There are currently 3+ open flights from Seattle to Chiang Mai within the next 7 days for less than $2,100.

What are the cheapest airlines flying from Seattle to Chiang Mai round-trip?

According to our current data, EVA Air ($944), Japan Airlines ($1,089), and Emirates ($1,206) offers the cheapest pricing from Seattle to Chiang Mai.

What are the cheapest flights from Seattle to Chiang Mai?

While on average a flight from Seattle to Chiang Mai is generally $658, our data shows the cheapest flight currently is $389. When looking at the most popular route, (Seattle/Tacoma Intl - Chiang Mai), you can expect to pay $871 for that flight.

What are the most popular airlines that fly from Seattle to Chiang Mai?

Before booking your flight from Seattle to Chiang Mai check out the most popular airlines for this route: EVA Air, Cathay Pacific or Delta.

COVID Restrictions

View COVID Travel Restrictions for Chiang Mai, Thailand

Do I need a COVID test to fly to Chiang Mai from Seattle?

Information is based on travel restrictions from Seattle/Tacoma Intl to Chiang Mai

Most visitors from Seattle/Tacoma Intl need to provide a negative COVID-19 test result and/or quarantine to enter Chiang Mai.

COVID-19 testing requirements
Visitors from Seattle/Tacoma Intl must present a negative RT-PCR (NAAT) test taken 72 hours before departing to Chiang Mai.

Quarantine requirements
Visitors from Seattle/Tacoma Intl are not required to quarantine after entering Chiang Mai.

Documents
Thailand Pass - The Thailand Pass is a web-based system for Thai and foreign travelers to fill in their travel and health information and upload the related documents before travelling. This system is operational and will replace the COE system on 1 November, 2021. However, the COE will continue to be used for certain groups of travelers.

MorChana App - Alert application and contact tracing app to be used while in Thailand. Download via Apple Store or Google Play Store.


Do I need a test to fly back to Seattle from Chiang Mai?

Returning to Seattle/Tacoma Intl from Chiang Mai

COVID-19 testing requirements
Visitors from Chiang Mai must present a negative RT-PCR (NAAT) or Antigen (quick-test) test taken 24 hours before departing to Seattle/Tacoma Intl.

Quarantine requirements
Visitors from Chiang Mai are not required to quarantine after entering Seattle/Tacoma Intl.

Hide COVID Travel Restrictions for Chiang Mai, Thailand

Destination information for Chiang Mai

Things to know before you go - useful duration and weather info for your trip from Seattle to Chiang Mai.
Today's exchange rate
$1 = ฿33.83
Average temperature for December in Chiang Mai
84.2 °F
Avg rainfall for December in Chiang Mai
0.7 ″

Airports servicing Seattle

Airports servicing Chiang Mai

Top 5 airlines flying from Seattle/Tacoma Intl to Chiang Mai

The chart below displays the airlines Cheapflights users traveling from Seattle to Chiang Mai choose most often. Cheapest and average prices are based on aggregated data from the past 12 months.
Airline Cheapest Average Flexibility On-time COVID-19 safety
Korean Air
$616 $807 No cancel fee 81%
EVA Air
$652 $840 No cancel fee 74%
Cathay Pacific
$657 $1,036 No cancel fee 72%
Delta
$658 $1,135 No cancel fee N/A
China Eastern
$672 $775 No cancel fee 62%

We couldn't confirm the COVID-19 safety measures taken by China Eastern. Please check directly on their website for additional information.

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