Seattle (SEA) to Bangkok (BKK) is 11,988 km in a straight line, the equivalent of about 15h 29m in the air; we have not seen a nonstop fare on this pair. The lowest one-way fare seen recently was $919 with Philippine Airlines (1 stop), departing 21 Dec 2026 — as of 8 Oct 2026.

Check fares, see which airlines fly this route, and sort out airports, visas, and what to do at the destination — all before you book.

Plan your trip

See today's SEA–BKK fares on Trip.com

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When you land in Bangkok

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Getting out of Bangkok (BKK)

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Pre-book a fixed-price transfer

Our pick

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Things to do in Bangkok

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Tours, tickets & day trips

Our pick

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Flights SEA → BKK

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Find hotels in Bangkok

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Why travelers watch this route

Fares seen

The lowest one-way fare seen was $919 with Philippine Airlines (1 stop), departing 21 Dec 2026. Checked 8 Oct 2026 — fares move daily.

Seasonality

Bangkok demand usually strengthens around November – February, which can push fares higher on this corridor.

Who flies it

We have not confirmed a nonstop carrier on SEA–BKK; most travellers connect through a hub.

Airlines flying Seattle to Bangkok

We have not confirmed which airlines fly SEA–BKK nonstop. Search the route to see every carrier selling it today, including connections.

Best time to fly to Bangkok

Based on weather and travel conditions in Thailand

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Best monthsGoodAvoid if possible

The cool, dry season (November–February) is ideal — sunny skies, low humidity, and comfortable temperatures around 25–30°C. The monsoon (May–October) brings heavy rain especially in the south.

Peak season: November – February

Direct & Connecting Flights

We have not seen a nonstop fare between Seattle (SEA) and Bangkok (BKK), so most itineraries connect through a hub.

Fares & Price Guide

The lowest one-way fare seen on SEA–BKK was $919 USD (1 stop) as of 8 Oct 2026. Set a fare alert to be told when it drops.

About Bangkok, Thailand

Flights arrive at Suvarnabhumi Airport (BKK). Best visited during November – February. See the destination guide for hotels, visa requirements and travel tips.

Plan this route beyond the fare

Use the wider AirConnect network to move from a route check into airports, airlines, visa, and trip planning.

Search SEA → BKK

See current Seattle to Bangkok fares on Trip.com.

Airport Guides

Check terminals, transport and arrival details for SEA and BKK.

Airline Route Maps

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Bangkok Planning

Turn this flight route into a full trip with destination, hotel and activity planning.

Price Alerts

Track fare drops on SEA–BKK and related city pairs.

Visa Guides

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Explore related route clusters

More routes in this part of the world.

USA routes

Browse more routes from the Seattle side of this corridor.

Thailand routes

See how Bangkok connects into its wider route market.

All routes A–Z

Explore more city-pair corridors across the wider AirConnect network.

Frequently asked questions — Seattle to Bangkok flights

How long is the flight from Seattle to Bangkok?

Seattle (SEA) and Bangkok (BKK) are 11,988 km apart, about 15h 29m of flying time. We have not seen a nonstop fare on this pair, so expect to connect — the cheapest itinerary seen had 1 stop, which adds to the total journey time.

How far is Seattle from Bangkok by air?

The great-circle distance between Seattle–Tacoma International Airport and Suvarnabhumi Airport is 11,988 km (7,449 miles), a ultra long-haul route.

How much does a flight from Seattle to Bangkok cost?

The lowest one-way fare seen recently on SEA–BKK was $919 USD with Philippine Airlines (1 stop), departing 21 Dec 2026, found in fare searches as of 8 Oct 2026. Fares change constantly and depend on the date, so check the current price before booking.

Do I need a visa to travel from Seattle to Thailand?

It depends on your passport. Some nationalities can enter Thailand visa-free or get a visa on arrival; others must apply in advance. Use AirConnect's Visa Checker to see the rules for your passport.

What is the best time to visit Bangkok?

Sources: fares from Travelpayouts flight-search data, seen 8 Oct 2026; airlines from each carrier's published network and nonstop fares on sale; distance from OurAirports coordinates; flight time estimated from distance. Fares change daily.

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