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Cheap Flights from Seattle / Tacoma International to Chiang Mai

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      Travellers and cabin class, 1 Adult, Economy

      Compare Seattle / Tacoma International to Chiang Mai flight deals

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

      Book the best Chiang Mai fare with no extra fees

      Flight deals from Seattle / Tacoma International to Chiang Mai

      Looking for a cheap last-minute deal or the best return flight from Seattle / Tacoma International Airport to Chiang Mai Airport? If you want to travel next month, return fares start from Rs275,372. Find the lowest prices on one-way and return tickets right here.
      Chiang Mai.Rs108,410 per passenger.Departing Sun, 29 Nov.One-way flight with Singapore Airlines.Outbound indirect flight with Singapore Airlines, departs from Seattle / Tacoma International on Sun, 29 Nov, arriving in Chiang Mai.Price includes taxes and charges.From Rs108,410, select.
      Chiang Mai.Rs108,410 per passenger.Departing Sun, 14 Feb.One-way flight with Singapore Airlines.Outbound indirect flight with Singapore Airlines, departs from Seattle / Tacoma International on Sun, 14 Feb, arriving in Chiang Mai.Price includes taxes and charges.From Rs108,410, select.
      Chiang Mai.Rs116,817 per passenger.Departing Wed, 2 Dec.One-way flight with Singapore Airlines.Outbound indirect flight with Singapore Airlines, departs from Seattle / Tacoma International on Wed, 2 Dec, arriving in Chiang Mai.Price includes taxes and charges.From Rs116,817, select.
      Chiang Mai.Rs117,923 per passenger.Departing Wed, 6 Jan.One-way flight with Singapore Airlines.Outbound indirect flight with Singapore Airlines, departs from Seattle / Tacoma International on Wed, 6 Jan, arriving in Chiang Mai.Price includes taxes and charges.From Rs117,923, select.
      Chiang Mai.Rs118,652 per passenger.Departing Fri, 30 Oct.One-way flight with Korean Air.Outbound indirect flight with Korean Air, departs from Seattle / Tacoma International on Fri, 30 Oct, arriving in Chiang Mai.Price includes taxes and charges.From Rs118,652, select.
      Chiang Mai.Rs118,668 per passenger.Departing Sat, 8 May.One-way flight with Singapore Airlines.Outbound indirect flight with Singapore Airlines, departs from Seattle / Tacoma International on Sat, 8 May, arriving in Chiang Mai.Price includes taxes and charges.From Rs118,668, select.
      Chiang Mai.Rs127,880 per passenger.Departing Thu, 11 Mar.One-way flight with Cathay Pacific.Outbound indirect flight with Cathay Pacific, departs from Seattle / Tacoma International on Thu, 11 Mar, arriving in Chiang Mai.Price includes taxes and charges.From Rs127,880, select.
      Chiang Mai.Rs128,525 per passenger.Departing Fri, 18 Sep.One-way flight with Asiana Airlines.Outbound indirect flight with Asiana Airlines, departs from Seattle / Tacoma International on Fri, 18 Sep, arriving in Chiang Mai.Price includes taxes and charges.From Rs128,525, select.
      Chiang Mai.Rs128,580 per passenger.Departing Thu, 8 Apr.One-way flight with Cathay Pacific.Outbound indirect flight with Cathay Pacific, departs from Seattle / Tacoma International on Thu, 8 Apr, arriving in Chiang Mai.Price includes taxes and charges.From Rs128,580, select.

      Find the cheapest month to fly from Seattle / Tacoma International to Chiang Mai

      We’re always keeping an eye on fares, so you can find the best one in seconds. It looks like Seattle / Tacoma International to Chiang Mai flights are currently cheapest in November.
      Sep
      from Rs128,525
      Oct
      from Rs118,652
      Nov
      from Rs108,410
      Dec
      from Rs116,817
      Jan
      from Rs117,923
      Feb
      from Rs108,410
      Mar
      from Rs127,880
      Apr
      from Rs128,580
      May
      from Rs118,668
      Jun
      Find prices
      Jul
      Find prices
      Aug
      Find prices

      Seattle / Tacoma International to Chiang Mai: Alternative routes

      Compare routes from Seattle / Tacoma International 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 Rs108,410
      Search flights

      Lampang

      79km from central Chiang Mai
      from Rs135,561
      Search flights

      Seattle to Chiang Mai: Flight information

      The things to know before you go.
      Cheapest flight foundRs108,410
      Cheapest month to flyNovember

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

      The best price we found for a return flight from Seattle / Tacoma International to Chiang Mai is Rs220,948. 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 / Tacoma International to Chiang Mai. But we found flights with one or more stops from Rs220,948.
      As of September 2026, there are no flights flying from Seattle / Tacoma International to Chiang Mai.
      The cheapest month to fly from Seattle / Tacoma International to Chiang Mai is usually November.
      After crunching the numbers on our flight calendar, we found that it's currently cheapest to fly from Seattle / Tacoma International Airport to Chiang Mai Airport on Wednesday, 4 November 2026.
      No airlines currently offer direct flights between Seattle / Tacoma International Airport 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.

      Currently, Korean Air offers the cheapest flight tickets to Chiang Mai.

      Travelling from Seattle / Tacoma International Airport (SEA) to Chiang Mai Airport (CNX): what you need to know

      • Chiang Mai's timezone is UTC+7, making Chiang Mai 15 hours ahead of Seattle.

      • Get to the airport on time so you don't miss your SEA to CNX flight. Be there at least two hours ahead for international flights and an hour early for domestic departures to avoid a last-minute sprint to the gate.

      • Flying during a peak month like July? Public holidays and other popular seasons can mean longer lines at check-in and security. Play it safe and arrive up to four hours before international flights and two hours before domestic departures.

      • We make it a breeze to book a flight with a stopover. To see your options for tickets from Seattle / Tacoma International Airport to Chiang Mai Airport, uncheck 'Direct flights only.' Then, pick a flight that has a stop long enough to tour the city of your choice. Some great stopovers between SEA and CNX include:

        • Shanghai Pudong Airport

        • Incheon International Airport

        • Taipei Taiwan Taoyuan Airport

      Handy information about Seattle / Tacoma International Airport (SEA)

      • 80% of flights departing from Seattle / Tacoma International Airport touch down at their destination on schedule. Given its dependable on-time performance, you're unlikely to experience delays when jetting out of SEA.

      • To get to Seattle / Tacoma International Airport from central Seattle, it'll take around 25 minutes if you're travelling by car. This depends on traffic, however. It's approximately 23 kilometres from the airport to the city centre.

      • The journey on public transport usually takes 35 minutes.

      • Have an early flight from Seattle / Tacoma International Airport to Chiang Mai Airport? Avoid the hassle of rushing to the terminal (and get some extra shut-eye) by picking one of these hotels near SEA:

      Arriving at Chiang Mai Airport (CNX)

      • Consider staying in a hotel near CNX if you're catching a late Seattle / Tacoma International Airport to Chiang Mai Airport flight. Choose one of these options and avoid the hassle of a long transfer:

      • Fast-track your adventure by picking up a Chiang Mai Airport rental car. Grab your wheels from Chic Car Rent, asap car rental or Hertz and explore beyond Chiang Mai's usual tourist stops.

      • Reserving your vehicle from Chiang Mai Airport about two weeks in advance can help you secure the lowest rate.

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

      • From Chiang Mai Airport, Chiang Mai is approximately 3 kilometres away. It takes around 15 minutes to reach the centre driving.

      • Getting to the centre by public transport will take you around 25 minutes.

      When to fly to Chiang Mai Airport (CNX)

      • It's time to pick your dates for your flight from Seattle / Tacoma International Airport to Chiang Mai Airport. January is the most popular month to visit Chiang Mai. If you'd like a more relaxed vibe, go in June.

      • The warmest month in Chiang Mai is April, with the temperature ranging between 22ºC and 42ºC. Lock in your flights from Seattle / Tacoma International Airport to Chiang Mai Airport in this month if this is the kind of weather you like.

      • Look for cheap tickets from SEA to CNX in January if you want to travel in cooler conditions. Temperatures are at their lowest around then, ranging between 12ºC and 31ºC on average.

      Explore more of Thailand

      • You've visited Chiang Mai, now it's time to explore other corners of Thailand. Journey about 434 kilometres east to Udon Thani to tick off its must-visit sights. From Thai-Chinese Cultural Centre to Wat Pho Chai and Wat Burapa Wanaram, there's plenty to keep you busy.

      • Around 80 kilometres south-east of Chiang Mai, Lampang is another favourite stop in Thailand. Experience the best of this destination with a visit to Wat Chiang Rai, Wat Phra Kaew Don Tao Suchadaram and Wat Chai Mongkhon.

      Plan the rest of your trip from Seattle to Chiang Mai

      Prices shown on this page are estimated lowest prices only. Found in the last 12 days.