Seattle to Chiang Mai flights

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Lowest observed

€362

Average observed

€468

Cheapest month

November 2026

Last checked

23 Sep 2026

Observed fares. Prices may change.

Your next trip, last seen at €362

Lowest observed

29 Nov 2026

Thai Vietjet Air · 2 stops · One way

Cheapest observed day · Last checked: 23 Sep 2026

Departure

08:40

When to fly

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The lowest fare we observed for each month. Open a month to see its days, then pick your outbound and return. A day with no price is one we will search for you.

Prices are for observed departure and return date pairs. No data does not mean no flights.

Short answer

The lowest fare our own searches returned is €362, seen on 23 Sep 2026. The average across the fares we caught is €468. November 2026 is the cheapest month in our observations, at €362. These are prices our searches returned on the dates shown, not quotes; run a live search for today's fare.

Short answer

About this route

Explore the fares we observed from Seattle to Chiang Mai. Prices move often, so pick your dates to see the latest options.

SeattleChiang Mai

Route distance: 11,562 km
Typical journey time: 32h 35m
Alternative airports: BFI

Route-level information; individual journeys vary.
We have not observed non-stop service on this route; the fares shown include at least one stop.

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Observed, not guaranteed

Every price is a fare we actually saw, and it may change at any time.

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The price is final on the provider's site, where your booking is completed.

How our prices work

Frequently asked

How much is a flight from Seattle to Chiang Mai?

The lowest fare we have observed is €362, found on 23 Sep 2026. Prices move, so read it as a floor rather than a quote.

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

In our observations November 2026 is the cheapest month so far, at €362.

Are there direct flights from Seattle to Chiang Mai?

Our data holds no non-stop flight from Seattle to Chiang Mai. The fares on this page include at least one stop.

How long does the flight from Seattle to Chiang Mai take?

The average journey time across the 73 fares we observed is 33h 41m, including any stops. Individual departures vary; the fastest observed flight is listed in the route facts above.

How many of the observed Seattle to Chiang Mai fares were non-stop?

None of the 74 fares we observed was non-stop; every one included at least one stop. That describes our observations, not every flight that operates.

How observed prices work, what "No data" means and what a fare includes: Read the flight price guide