Cheap flights from Seattle to Bangkok

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Seattle (SEA)
Bangkok (BKK)
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How to find the cheapest flight from
Seattle (SEA) to Bangkok (BKK)

All the information you need to plan the best SEA to BKK flight in 2021: compare Seattle to Bangkok flight prices with the expected peak season, weather and rainfall in Bangkok.
SEA - TH1
Price
C$ 655 - C$ 1,229
TH1
Temperature
26 - 30 °C
TH1
Precipitation
10 - 320 mm

Popular in

December

High demand for flights, 38% potential price rise

Cheapest in

May

Best time to find cheap flights, 13% potential price drop

Average price

C$ 905

Average for round-trip flights in November 2021

Round-trip from

C$ 837

From Seattle/Tacoma Intl to Bangkok

Flight route prices based on searches on Cheapflights within the last 3 days, monthly prices based on aggregated historical data.
What is the cheapest month to fly from Seattle to Bangkok?

Flights from Seattle to Bangkok lean towards being more expensive in December. Prices are generally better when you fly from Seattle to Bangkok in May, with the cheapest ticket starting at C$ 785.

When is the cheapest time to fly from Seattle to Bangkok (SEA - TH1)?

Regardless of the time of day you decide to fly, the ticket price will remain around the same. Book flights from Seattle to Bangkok as you normally would.

How far in advance should I book a flight from Seattle to Bangkok?

Travellers have found it’s best to book a flight 44 days in advance to save up to 20% compared to booking the same week of travel. As your travel date approaches, the cost of this flight route may potentially increase. While opting to book 44 days out may not be an option for all, there are still additional ways to secure a deal in the near future. You might find a flight from Seattle to Bangkok 1-2 weeks in advance for as low as C$ 1,027, or C$ 1,108 for flights within the next 24 hours.

Related info for your journey

Useful info, stats and facts about <span class="emphasized">Seattle</span> to <span class="emphasized">Bangkok</span> flights.

Flight FAQs

From Seattle to Bangkok

What airport do you fly from for flights from Seattle to Bangkok?

Most people fly from Seattle/Tacoma Intl (SEA) if they book a flight from Seattle to Bangkok. On average, Seattle/Tacoma Intl has 0 outbound flights to Bangkok per day from 1 airline. Seattle/Tacoma Intl is conveniently located just 18.4 km from Seattle’s city centre.

What are the most popular airlines that fly from Seattle to Bangkok?

Before booking your flight from Seattle to Bangkok check out the most popular airlines for this route: EVA Air, ANA or Asiana Airlines.

COVID Restrictions

View COVID Travel Restrictions for Bangkok, Thailand

Do I need a COVID test to fly to Bangkok from Seattle?

Information is based on travel restrictions from Seattle/Tacoma Intl to Bangkok

Most visitors from Seattle/Tacoma Intl need to provide a negative COVID-19 test result and/or quarantine to enter Bangkok.

COVID-19 testing requirements
Visitors from Seattle/Tacoma Intl must present a negative RT-PCR (NAAT) test taken 72 hours before departing to Bangkok.

Quarantine requirements
Visitors from Seattle/Tacoma Intl are not required to quarantine after entering Bangkok.

Documents
Thailand Pass - The Thailand Pass is a web-based system for Thai and foreign travelers to fill in their travel and health information and upload the related documents before travelling. This system is operational and will replace the COE system on 1 November, 2021. However, the COE will continue to be used for certain groups of travelers.

MorChana App - Alert application and contact tracing app to be used while in Thailand. Download via Apple Store or Google Play Store.


Do I need a test to fly back to Seattle from Bangkok?

Returning to Seattle/Tacoma Intl from Bangkok

COVID-19 testing requirements
Visitors from Bangkok must present a negative RT-PCR (NAAT) test taken 72 hours before departing to Seattle/Tacoma Intl.

Quarantine requirements
Visitors from Bangkok are not required to quarantine after entering Seattle/Tacoma Intl.

Hide COVID Travel Restrictions for Bangkok, Thailand

Destination information for Bangkok

Things to know before you go - useful duration and weather info for your trip from Seattle to Bangkok.
Today's exchange rate
C$ 1 = ฿26.09
Average temperature for November in Bangkok
33.0 °C
Avg rainfall for November in Bangkok
47.0 mm

Airports servicing Seattle

Airports servicing Bangkok

Bangkok Suvarnabhumi (BKK)
Bangkok Don Mueang Intl (DMK)
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