Cheap Flights from Seattle to Chiang Mai

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Find the cheapest month or even day of the year to fly to Chiang Mai

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Flight deals from Seattle to Chiang Mai Airport

Looking for a cheap last-minute deal or the best round-trip flight from Seattle to Chiang Mai Airport? If you want to travel next month, round-trip fares start from $868. Find the lowest prices on one-way and round-trip tickets right here.

Chiang Mai.$744 per passenger.Departing Mon, May 4, returning Mon, May 18.Round-trip flight with Cathay Pacific.Outbound indirect flight with Cathay Pacific, departing from Seattle / Tacoma International on Mon, May 4, arriving in Chiang Mai.Inbound indirect flight with Cathay Pacific, departing from Chiang Mai on Mon, May 18, arriving in Seattle / Tacoma International.Price includes taxes and charges.From $744, select.

Chiang Mai.$792 per passenger.Departing Fri, Nov 6, returning Mon, Nov 30.Round-trip flight with China Airlines.Outbound indirect flight with China Airlines, departing from Seattle / Tacoma International on Fri, Nov 6, arriving in Chiang Mai.Inbound indirect flight with China Airlines, departing from Chiang Mai on Mon, Nov 30, arriving in Seattle / Tacoma International.Price includes taxes and charges.From $792, select.

Chiang Mai.$868 per passenger.Departing Thu, Apr 16, returning Thu, Apr 23.Round-trip flight with EVA Air.Outbound indirect flight with EVA Air, departing from Seattle / Tacoma International on Thu, Apr 16, arriving in Chiang Mai.Inbound indirect flight with EVA Air, departing from Chiang Mai on Thu, Apr 23, arriving in Seattle / Tacoma International.Price includes taxes and charges.From $868, select.

Chiang Mai.$902 per passenger.Departing Tue, May 12, returning Thu, Jun 11.Round-trip flight with Alaska Airlines and China Airlines.Outbound indirect flight with Alaska Airlines, departing from Seattle / Tacoma International on Tue, May 12, arriving in Chiang Mai.Inbound indirect flight with China Airlines, departing from Chiang Mai on Thu, Jun 11, arriving in Seattle / Tacoma International.Price includes taxes and charges.From $902, select.

Chiang Mai.$920 per passenger.Departing Sun, Mar 8, returning Sun, Mar 15.Round-trip flight with Asiana Airlines and Thai VietJet Air.Outbound indirect flight with Asiana Airlines, departing from Seattle / Tacoma International on Sun, Mar 8, arriving in Chiang Mai.Inbound indirect flight with Thai VietJet Air, departing from Chiang Mai on Sun, Mar 15, arriving in Seattle / Tacoma International.Price includes taxes and charges.From $920, select.

Chiang Mai.$1,035 per passenger.Departing Mon, Jun 1, returning Thu, Jun 11.Round-trip flight with Asiana Airlines and HK Express.Outbound indirect flight with Asiana Airlines, departing from Seattle / Tacoma International on Mon, Jun 1, arriving in Chiang Mai.Inbound indirect flight with HK Express, departing from Chiang Mai on Thu, Jun 11, arriving in Seattle / Tacoma International.Price includes taxes and charges.From $1,035, select.

Chiang Mai.$1,050 per passenger.Departing Mon, Jun 15, returning Thu, Jul 16.Round-trip flight with Alaska Airlines and Thai LionAir.Outbound indirect flight with Alaska Airlines, departing from Seattle / Tacoma International on Mon, Jun 15, arriving in Chiang Mai.Inbound indirect flight with Thai LionAir, departing from Chiang Mai on Thu, Jul 16, arriving in Seattle / Tacoma International.Price includes taxes and charges.From $1,050, select.

Chiang Mai.$1,056 per passenger.Departing Tue, Jul 7, returning Thu, Jul 23.Round-trip flight with Korean Air and Thai AirAsia.Outbound indirect flight with Korean Air, departing from Seattle / Tacoma International on Tue, Jul 7, arriving in Chiang Mai.Inbound indirect flight with Thai AirAsia, departing from Chiang Mai on Thu, Jul 23, arriving in Seattle / Tacoma International.Price includes taxes and charges.From $1,056, select.

Chiang Mai.$1,788 per passenger.Departing Wed, Dec 16, returning Fri, Jan 1.Round-trip flight with EVA Air.Outbound indirect flight with EVA Air, departing from Seattle / Tacoma International on Wed, Dec 16, arriving in Chiang Mai.Inbound indirect flight with EVA Air, departing from Chiang Mai on Fri, Jan 1, arriving in Seattle / Tacoma International.Price includes taxes and charges.From $1,788, select.

Find the cheapest month to fly from Seattle to Chiang Mai

We’re always keeping an eye on fares, so you can find the best one in seconds. It looks like Seattle to Chiang Mai flights are currently cheapest in May.

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Seattle to Chiang Mai: Alternative routes

Compare routes from Seattle to Chiang Mai below. You may find an airport to fly into that's cheaper, faster, or easier than Chiang Mai.

Chiang Mai

4km from central Chiang Mai

ClosestCheapest

from $744

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Lampang

79km from central Chiang Mai

from $1,296

Search flights

Seattle to Chiang Mai: Flight information

The things to know before you go.

Cheapest flight found	$744
Cheapest month to fly	May

Finding cheap flights from Seattle to Chiang Mai: Frequently asked questions

How much are round-trip flights from Seattle to Chiang Mai?

The best price we found for a round-trip flight from Seattle to Chiang Mai is $744. This is an estimate based on information collected from different airlines and travel providers over the last 4 days and is subject to change and availability.

Which airlines fly direct from Seattle to Chiang Mai?

Currently, there are no airlines that fly direct from Seattle to Chiang Mai. But we found flights with one stop from $744.

How many flights are there a week from Seattle to Chiang Mai?

There are no flights flying from Seattle to Chiang Mai, as of March 2026.

When is the cheapest time to fly from Seattle to Chiang Mai?

The cheapest month to fly from Seattle to Chiang Mai is usually May.

Which upcoming date is cheapest to fly from Seattle to Chiang Mai Airport on?

After crunching the numbers on our flight calendar, we found that it is currently cheapest to fly from Seattle to Chiang Mai Airport on Monday, May 4, 2026.

Can I get a direct flight from Seattle to Chiang Mai Airport?

No airlines currently offer direct flights between Seattle and Chiang Mai Airport. Most routes have one or more stops.

How can I find the best flight deal to Chiang Mai?

We show every price from over 1,200 airlines and travel agents, comparing them all so you don’t have to. If you know you want to fly to Chiang Mai but you’re not ready to book, set up a Price Alert. We’ll track prices for you, and let you know when they rise or fall.

When is the best time to book flights to Chiang Mai?

We crunched all the numbers in our flight calendar, and it looks like the cheapest time to book a flight to Chiang Mai is around 40 days in advance, so don’t leave your flight to the last minute.

Which is the cheapest airline to fly with from Seattle to Chiang Mai?

The cheapest airline that flies to Chiang Mai is Cathay Pacific.

Traveling from Seattle to Chiang Mai International Airport (CNX): What you need to know

Get your trip planning started by working out where you'll catch your flight from Seattle to Chiang Mai International Airport (CNX). Seattle-Tacoma International Airport (SEA) and Lake Union Sea Plane Base Airport (LKE) are the main airports in Seattle.
The timezone in Chiang Mai is UTC+7, which is 14 hours ahead of Seattle. Chiang Mai International Airport is located in Chiang Mai.
Arriving two hours before an international flight and one hour ahead of a domestic departure are travel rules to live by. Be at the airport on time to board your flight from Seattle to CNX.
Peak season means busier airports, so show up even earlier. Give yourself at least two hours before a domestic flight and four hours for an international journey to stick to your schedule.

Airports in Seattle

Seattle-Tacoma International Airport (SEA)

A stopover is the ideal opportunity to break up your journey and perhaps even explore another city. When browsing cheap flights from Seattle to CNX leaving from Seattle-Tacoma International Airport (SEA), deselect the 'Direct flights only' box to get ideas for where to visit along the way. Your journey might pause in:
- Shanghai Pudong International Airport (PVG)
- Incheon International Airport (ICN)
- Taiwan Taoyuan International Airport (TPE)
Traveling from central Seattle to SEA takes about 55 minutes by public transport. If you ride-share, drive or get a cab, you'll cover the 23 kilometers in 20 minutes or so, depending on traffic.
Want a leisurely start to your break? Stay near Seattle-Tacoma International Airport. Whether you're catching an early flight from Seattle to Chiang Mai International Airport or prefer not to feel hurried, these hotels have you covered:
81.27% of flights leaving Seattle-Tacoma International Airport arrive at their destination according to schedule. Given its solid on-time performance, disruptions are unlikely when jetting out of SEA.

Lake Union Sea Plane Base Airport (LKE)

Using public transport, you can travel from central Seattle to LKE in about 25 minutes. The airport is roughly 3 kilometers away, and getting there by car takes approximately 10 minutes.
Got an early start? Think about staying at one of these accommodation options near Lake Union Sea Plane Base Airport the day before your Seattle to CNX flight:

About Chiang Mai International Airport (CNX)

The last thing you want is a lengthy journey to your hotel if you're arriving on a late flight from Seattle to Chiang Mai International Airport. Get comfy at one of these accommodation options near CNX instead:
Hit the road running by picking up a Chiang Mai International Airport rental car. Grab a set of wheels from Chic Car Rent, asap car rental or Hertz and explore beyond Chiang Mai's usual tourist stops.
To get the best deal, reserve your vehicle around two weeks in advance of your Seattle to Chiang Mai International Airport flight.

Getting from Chiang Mai International Airport (CNX) to central Chiang Mai

Chiang Mai International Airport is about 3 kilometers from central Chiang Mai. How long it takes to get there in a cab or car rental will depend on the time of day. Do some research before you go.
Traveling on public transport will take you roughly 25 minutes.

How to find the cheapest flights from Seattle to Chiang Mai International Airport (CNX)

Right now, $361 is the best price we've found for a one-way ticket from Seattle to Chiang Mai International Airport. The cheapest price for a return flight is $744. Remember fares may change due to availability at the time of booking.
To find cheap flights from Seattle to CNX, book ahead. Airlines typically offer lower prices when flights are first released.
Cheap Seattle to Chiang Mai International Airport tickets are easier to find when you have flexibility in your schedule. Use the 'Whole month' search tool to compare fares across the month and then pick the cheapest day.
Locking in a cheap plane ticket from Seattle to CNX couldn't be easier with Price Alerts. Simply set up one of these automatic alerts and we'll notify you when a lower fare pops up.
Find an affordable flight from Seattle to Chiang Mai International Airport by using the search filters. Choose your ideal times, airlines and number of stops, then sort the results by 'Cheapest' for the best deals.

The best time to fly from Seattle to Chiang Mai International Airport (CNX)

It's time to work out your travel dates for your flight from Seattle to Chiang Mai International Airport (CNX). August is when most people visit Chiang Mai. If a slower pace sounds more appealing, think about going in February.
Before locking in your Seattle to CNX plane ticket, consider the type of weather you enjoy. April is the warmest month in Chiang Mai, with temperatures ranging from 22ºC (72ºF) to 42ºC (108ºF).
January has temperatures of between 12ºC (54ºF) and 31ºC (88ºF). Look for cheap tickets from Seattle to Chiang Mai International Airport around that time if you want to travel when it's cooler.

More about Chiang Mai

Start your Chiang Mai trip off on the right foot by choosing the ideal place to stay. As soon as you've booked your flight from Seattle to Chiang Mai International Airport, browse our range of hotels including:
There are so many things to do and see in this city, it can be tricky to know where to start. Songkran Festival Chiang Mai, Yi Peng and Loy Krathong (Lantern Festival) and Doi Suthep are top sights which should be on any good Chiang Mai itinerary.

Explore more of Thailand

You've done Chiang Mai, now it's time to discover other parts of Thailand. Travel around 257 kilometers south-east to Phitsanulok to tick off its top sights. From Wat Phra Si Rattana Mahathat to Phra Si Ratana Temple (Wat Yai) and Wat Ratcha Burada Temple, there's plenty to keep you on the go.
If there's time to check out another major stop in Thailand, consider Chiang Rai, about 153 kilometers north-east of Chiang Mai. Wat Rong Khun, Wat Phra Kaew and Wat Huai Pla Kung are key reasons to visit.