Cheap Flights from Seattle (SEAA) to Chiang Mai (CNX)

Compare Seattle to Chiang Mai flight deals

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

Looking for a cheap last-minute deal or the best return flight from Seattle to Chiang Mai Airport? If you want to travel next month, return fares start from £925. Find the lowest prices on one-way and return tickets right here.

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 January.

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.

Seattle to Chiang Mai: Flight information

The things to know before you go.
Cheapest flight found£359
Cheapest month to flyJanuary

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

The best price we found for a return flight from Seattle to Chiang Mai is £672. 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.
Currently, there are no airlines that fly direct from Seattle to Chiang Mai. But we found flights with one stop from £672.
As of April 2026, there are no flights flying from Seattle to Chiang Mai.
The cheapest month to fly from Seattle to Chiang Mai is usually November.
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, 9 November 2026.
No airlines currently offer direct flights between Seattle and Chiang Mai Airport. Most routes have one or more stops.
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.
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.
The cheapest airline that flies to Chiang Mai is China Airlines .

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

  • The timezone in Chiang Mai is UTC+7, which is 15 hours ahead of Seattle. Chiang Mai International Airport is located in Chiang Mai.

  • To ensure you get on your flight from Seattle to CNX, leave plenty of time for things like check-in and baggage drop. Turning up two hours ahead of international departures and one hour before domestic flights is the general travel rule.

  • July is a busy time to fly out. If you're taking off then or during a major holiday like Thanksgiving, Memorial Day or Christmas, show up even earlier. Aim for at least two hours ahead for domestic flights and up to four hours for international journeys.

Airports in Seattle

Seattle-Tacoma International Airport (SEA)

  • We make it a piece of cake to book cheap flights from Seattle to CNX that include a stopover. To explore all your options leaving from Seattle-Tacoma International Airport (SEA), deselect 'Direct flights only.' Then, select a flight that has a stop long enough to tour the city of your choice. Top stopovers between SEA and CNX include:

    • Shanghai Pudong International Airport (PVG)

    • Seoul Incheon International Airport (ICN)

    • Taiwan Taoyuan International Airport (TPE)

  • SEA is around 23 kms (14 miles) from central Seattle. If you're ride-sharing, catching a taxi or driving from the centre, it'll take you 25 minutes or so to get there, depending on traffic conditions. If you're taking public transport, expect the journey time to be around 35 minutes.

  • Booked an early flight from Seattle to Chiang Mai International Airport? Avoid the last-minute rush to the terminal (and enjoy a little extra shut-eye) by staying at one of these stays close to Seattle-Tacoma International Airport:

  • Seattle-Tacoma International Airport scores high marks for its on-time performance. 80% of flights that take off from SEA arrive at their destination without delay.

Seattle Paine Field International Airport (PAE)

  • PAE is around 40 kms (25 miles) from central Seattle. It takes 40 minutes or so to get to the airport in a car from the city centre. Public transport takes roughly 1 hour 30 minutes.

  • Want to enjoy an extra night away before your Seattle to CNX flight? Unwind in a hotel near Seattle Paine Field International Airport before your adventure officially begins. These stays are expecting you:

  • Seattle Paine Field International Airport is known for its commitment to punctuality. 80% of flights leaving here arrive right on target.

About Chiang Mai International Airport (CNX)

  • The last thing you want is a long journey to your hotel if you're getting in late on a flight from Seattle to Chiang Mai International Airport. Check in to one of these accommodation options near CNX instead:

  • To get the lowest price, reserve your ride 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

  • Central Chiang Mai is around 3 kms (2 miles) from Chiang Mai International Airport and takes about 15 minutes to reach by car. Look into how to get from the airport to the city, whether that's with a car hire, taxi or ride-share.

  • It typically takes 25 minutes if you're travelling by public transport.

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

  • The cheapest price we've found for a one-way ticket from Seattle to Chiang Mai International Airport is £359. For a return flight on this route, the best price is £672. Depending on the availability when you book, these fares could change.

  • To pick up cheap flights from Seattle to CNX, book in advance. Airlines usually offer their most competitively priced fares when tickets first go on sale.

  • If you're flexible with your travel dates, use the 'Whole month' search tool. It'll give you the cheapest price across each month when searching for your Seattle to Chiang Mai International Airport ticket.

  • Locking in a cheap plane ticket from Seattle to CNX is a breeze with Price Alerts. Simply create one of these automatic alerts and we'll notify you when prices go down.

  • Save money on your flight from Seattle to Chiang Mai International Airport by using the search filters. Choose your ideal times, number of stops and airlines, then sort the results by 'Cheapest' for the best deals.

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

  • Think about the kind of holiday you want when deciding when to fly. May is the quietest month to visit Chiang Mai. February is when most people book flights from Seattle to Chiang Mai International Airport (CNX), which may be perfect if you're chasing more action.

  • Book a Seattle to CNX plane ticket departing in April if you're eager to explore the city during its warmest month. Expect temperatures in Chiang Mai to range from 22ºC to 42ºC.

  • If you'd rather travel in cooler conditions, search for a cheap ticket from Seattle to Chiang Mai International Airport in January when temperatures are between 12ºC and 31ºC.

More about Chiang Mai

  • When it comes to looking for somewhere to lay your head, you'll find the best stays in Chiang Mai right here. Check out these hotels after you've booked your flight from Seattle to Chiang Mai International Airport:

  • Your visit to Chiang Mai isn't complete without checking out the sights. Big-name attractions worth exploring include Songkran Festival Chiang Mai, Doi Suthep and Elephant Conservation Park.

Explore more of Thailand

  • You've seen Chiang Mai, now it's time to explore other corners of Thailand. Journey about 257 kms (160 miles) southeast 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 busy.

  • Around 153 kms (95 miles) northeast of Chiang Mai, Chiang Rai is another essential stop in Thailand. Experience this destination's highlights firsthand at Wat Rong Khun, Wat Phra Kaew and Wat Huay Pla Kang: Goddess of Mercy Chiang Rai.

Prices shown on this page are estimated lowest prices only. Found in the last 45 days.