Cheap Flights from Chiang Mai to Seattle

Compare Chiang Mai to Seattle flight deals

Find the cheapest month or even day of the year to fly to Seattle

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Flight deals from Chiang Mai to Seattle

Looking for a cheap last-minute deal or the best return flight from Chiang Mai to Seattle? Find the lowest prices on one-way and return tickets right here.

Find the cheapest month to fly from Chiang Mai to Seattle

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

Alternative Chiang Mai to Seattle routes

Looking for the cheapest, fastest or easiest route from Chiang Mai to Seattle? You could fly into the following airports instead.

Chiang Mai to Seattle: Flight information

The things to know before you go.
Cheapest flight foundR 7,950
Cheapest month to flySeptember

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

There are 4 airports in Seattle: Seattle Lake Union SPB, Seattle Boeing Fld, Seattle / Tacoma International, and Paine Field.
The best price we found for a return flight from Chiang Mai to Seattle is R 14,597. 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 Chiang Mai to Seattle. But we found flights with one or more stops from R 14,617.
As of September 2025, there are no flights flying from Chiang Mai to Seattle.
The cheapest month to fly from Chiang Mai to Seattle is usually September.
If you're flying from Chiang Mai Airport, the cheapest airport near Seattle is Seattle / Tacoma International – which is 19.5 km away from the centre of Seattle. We've found flights into this airport from R 14,597.
After crunching the numbers on our flight calendar, we found that it's currently cheapest to fly from Chiang Mai Airport to Seattle on Wednesday, 17 September 2025.
No airlines currently offer direct flights between Chiang Mai Airport and Seattle. 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 Seattle 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 Seattle is around 40 days in advance, so don’t leave your flight to the last minute.
In September, the average temperature is usually around 15°C. August is typically the warmest month in Seattle, when it usually averages around 23°C. You can expect the least rain in July. The coldest month is December, with temperatures averaging 0°C. The rainiest month is November.
Currently, Korean Air offers the cheapest flight tickets to Seattle.

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

  • Seattle is 14 hours behind Chiang Mai, where Chiang Mai International Airport is located. Seattle runs on the UTC-7 timezone.

  • To avoid rushing for your CNX to Seattle flight, allow plenty of time to check in and find your gate. Turning up two hours before international departures and an hour before domestic flights is the standard rule.

  • If you're jetting off during a bank holiday or another peak period, give yourself more time. A good rule is two hours ahead of domestic flights and up to four hours before international departures. Queues at check-in and security will be longer.

  • We make it a breeze to book flight tickets from CNX to Seattle with a stopover. To see your options, deselect 'Direct flights only.' Then, select a flight that has a stop long enough to see the sights of the city of your choice. Well-traveled stopover hubs include:

    • Shanghai Pudong International Airport (PVG)

    • Beijing Capital International Airport (PEK)

    • Taiwan Taoyuan International Airport (TPE)

  • CNX is about 3 kilometres from central Chiang Mai. If you're catching a cab, ride-sharing or driving from the centre, it'll take you 10 minutes or so to get there, depending on traffic conditions. If you're planning to take public transport, expect the journey time to be around 25 minutes.

  • Want a relaxed start to your journey? Stay near CNX. Whether you have an early flight from Chiang Mai International Airport to Seattle or want to avoid feeling rushed, these hotels are a convenient choice:

  • When it comes to the on-time performance of Chiang Mai International Airport, data shows 76.37% of flights stick to their scheduled arrival time.

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

  • The lowest price we've found for a one-way Chiang Mai International Airport to Seattle flight is R 7,950. The cheapest price for a return flight is R 14,597. Bear in mind fares can change due to availability at the time of booking.

  • To pick up cheap flights from CNX to Seattle, book ahead. Airlines tend to offer lower prices when tickets are first released.

  • Scoring cheap tickets from Chiang Mai International Airport to Seattle is easier if you're flexible with your trip dates. Use the 'Whole month' function to get the best prices across each month and walk away with an incredible deal.

  • Spend less time searching for cheap flights from CNX to Seattle by setting up a Price Alert. We'll send you an email or push notification on the app when a lower fare pops up.

  • Snag an affordable flight from Chiang Mai International Airport to Seattle with the help of our filters. Select your ideal duration, departure time and airlines, then sort the results by 'Cheapest' to see the best deals.

Airports in Seattle

Seattle-Tacoma International Airport (SEA)

  • The distance from Seattle-Tacoma International Airport (SEA) to central Seattle is roughly 23 kilometres. It takes about 20 minutes to reach the centre driving.

  • If you're travelling by public transport, expect a journey time of around 55 minutes.

  • If you're arriving on a late flight from Chiang Mai International Airport to Seattle, few things beat the convenience of staying near the terminal. Grab your bags from the carousel and then be showered and relaxing not long after at one of these accommodation options near SEA:

  • Get on the fast track to adventure by picking up a Seattle-Tacoma International Airport rental car. Grab your wheels from Thrifty, Europcar or Budget and experience the lesser-explored corners of Seattle and beyond.

  • For the lowest price, reserve your ride from Seattle-Tacoma International Airport about one week ahead of your flight from CNX to Seattle.

Lake Union Sea Plane Base Airport (LKE)

  • After your flight from Chiang Mai International Airport to Seattle has hit the tarmac, you can get to the city centre in about 10 minutes by car. Central Seattle is roughly 3 kilometres from Lake Union Sea Plane Base Airport (LKE).

  • You can expect the journey to take roughly 25 minutes on public transport.

  • Hang the 'Do not disturb' sign on your door and unwind at a hotel close to LKE. Here are a few options where you can check in after your CNX to Seattle flight:

Best time to go to Seattle

  • Before securing your flights from Chiang Mai International Airport to Seattle, consider which time of year is best for you. Peak season in Seattle offers a bustling atmosphere and plenty of things to do, while the low season means you'll get cheaper deals on hotels and fewer crowds.

  • Before booking a Chiang Mai International Airport to Seattle flight ticket, think about what kind of weather you prefer. August is the warmest month in Seattle, with temperatures ranging from 12ºC (54ºF) to 28ºC (82ºF).

  • February has average temperatures of between -1ºC (30ºF) and 11ºC (52ºF). Look for a cheap ticket from CNX to Seattle around that time if you want to travel in cooler conditions.

More about Seattle

  • Start your Seattle trip off on the right foot by choosing the ideal place to stay. After booking your flight from Chiang Mai International Airport to Seattle, check out our range of accommodation options including:

  • LMN Architects and Greyhound: Bus Station are a couple of popular attractions to put on your Seattle itinerary. Continue your sightseeing adventures at Boeing Radiation Effects Lab.

Explore more of United States

  • Portland is just one of the many cities in United States waiting to be explored once you've taken in the sights of Seattle. Around 241 kilometres away to the south, popular attractions include Pioneer Courthouse Square, Portland Japanese Garden and Pittock Mansion.

  • If there's time to check out another great destination in United States, head for Spokane, about 370 kilometres east of Seattle. Manito Park, Northwest Museum of Arts & Culture and Spokane Falls are key highlights.

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