Flights from Seattle, WA to Bangkok, Thailand from $518

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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	$655 - $1,229
TH1 Temperature	78.8 - 86 °F
TH1 Precipitation	0.4 - 12.6 inches

Popular in December High demand for flights, 38% potential price rise
Cheapest in May Best time to find cheap flights, 13% potential price drop
Round-trip from $655 From Seattle/Tacoma Intl to Bangkok
One-way from $518 One-way flight from Seattle/Tacoma Intl to Bangkok

Popular in

December

High demand for flights, 38% potential price rise

Cheapest in

May

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

Round-trip from

$655

From Seattle/Tacoma Intl to Bangkok

One-way from

$518

One-way flight 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?

The best pricing can be found in the month of May. Prices to Bangkok from Seattle average $757. You can even find prices in May for less than $757, as users have found deals to Bangkok from as low as $614. The month of December appears to be one of the more expensive times to travel to Bangkok from Seattle. Flying in the targeted month can save you up to 62%.

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

Users have found that booking a flight from Seattle to Bangkok at least 44 days early can save you up to 20% on average compared to booking a flight this week. If booking 44 days before your flight isn’t an option for you, users have found flights from Seattle to Bangkok for as little as $803 when booking for a departure date within the next two weeks. You can also check prices now. Some users have found airline tickets as low as $867 for flights departing within the next 3 days.

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

When flying from Seattle to Bangkok, the time of day you decide to fly out makes little to no difference towards the overall price you’ll pay on tickets.

Cheap flights from Seattle to Bangkok in October, November 2021

The best prices found for SEA to BKK flights for October, November

9 Nov - 8 Dec

$685pp

SEA

Seattle/Tacoma Intl

Singapore Airlines

3 STOPS

BKK

Bangkok Suvarnabhumi

BKK

Bangkok Suvarnabhumi

Singapore Airlines

1 STOP

SEA

Seattle/Tacoma Intl

8 Nov - 6 Dec

$690pp

SEA

Seattle/Tacoma Intl

Multiple Airlines

3 STOPS

BKK

Bangkok Suvarnabhumi

BKK

Bangkok Suvarnabhumi

Singapore Airlines

1 STOP

SEA

Seattle/Tacoma Intl

18 Nov - 9 Dec

$691pp

SEA

Seattle/Tacoma Intl

Singapore Airlines

2 STOPS

BKK

Bangkok Suvarnabhumi

BKK

Bangkok Suvarnabhumi

Singapore Airlines

1 STOP

SEA

Seattle/Tacoma Intl

Seattle/Tacoma Intl to Bangkok 2021 flight deals

Cheap flights to Bangkok from Seattle found for this year

3 Dec - 13 Dec

$636pp

SEA

Seattle/Tacoma Intl

Singapore Airlines

1 STOP

BKK

Bangkok Suvarnabhumi

BKK

Bangkok Suvarnabhumi

Singapore Airlines

2 STOPS

SEA

Seattle/Tacoma Intl

3 Dec - 13 Dec

$649pp

SEA

Seattle/Tacoma Intl

Singapore Airlines

1 STOP

BKK

Bangkok Suvarnabhumi

BKK

Bangkok Suvarnabhumi

Singapore Airlines

2 STOPS

SEA

Seattle/Tacoma Intl

3 Dec - 13 Dec

$657pp

SEA

Seattle/Tacoma Intl

Singapore Airlines

1 STOP

BKK

Bangkok Suvarnabhumi

BKK

Bangkok Suvarnabhumi

Singapore Airlines

1 STOP

SEA

Seattle/Tacoma Intl

Last minute flights from Seattle to Bangkok

Late deals on round-trip flights to Bangkok from Seattle, departing today and this week

22 Oct - 28 Oct

$791pp

SEA

Seattle/Tacoma Intl

Japan Airlines

2 STOPS

BKK

Bangkok Suvarnabhumi

BKK

Bangkok Suvarnabhumi

Japan Airlines

1 STOP

SEA

Seattle/Tacoma Intl

22 Oct - 28 Oct

$799pp

SEA

Seattle/Tacoma Intl

Japan Airlines

2 STOPS

BKK

Bangkok Suvarnabhumi

BKK

Bangkok Suvarnabhumi

Japan Airlines

2 STOPS

SEA

Seattle/Tacoma Intl

24 Oct - 17 Nov

$810pp

SEA

Seattle/Tacoma Intl

Japan Airlines

1 STOP

BKK

Bangkok Suvarnabhumi

BKK

Bangkok Suvarnabhumi

Japan Airlines

2 STOPS

SEA

Seattle/Tacoma Intl

One-way flights to Bangkok from Seattle

The cheapest one-way flights from Seattle to Bangkok

4:00 am - 11:20 am

Multiple Airlines

2 Stops

40h 20m

SEA - BKK

$518

SmartFares

5:00 am - 11:20 am

Japan Airlines

2 Stops

39h 20m

SEA - BKK

$519

SmartFares

6:00 am - 12:00 pm

Singapore Airlines

1 Stop

39h 00m

SEA - BKK

$522

Flyus

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?

Seattle/Tacoma Intl (SEA), located 11.4 mi from the city center, is the airport you fly out of when you book flights from Seattle to Bangkok. 16 airlines have flights from Seattle/Tacoma Intl to Bangkok on a regular basis. Booking flights from Seattle/Tacoma Intl to Bangkok should not be difficult; the airport handles an average of 0 outbound flights to Bangkok per day.

Which airlines flying from Seattle/Tacoma Intl to Bangkok have flexible cancellations due to COVID-19?

Some of our airline partners flying from Seattle/Tacoma Intl to Bangkok have new flexible policies in place due to COVID-19. EVA Air, Asiana Airlines, and Korean Air are some of the carriers where you may find flexible cancellation policies. You can use our site to filter for airlines like EVA Air with this kind of flexibility.

Can I find flights from Seattle to Bangkok for under $700 on Cheapflights?

Yes, there are multiple flights from Seattle to Bangkok for under $700. The cheapest flight booked recently is on Singapore Airlines for just $636, but on average you can expect to pay $674.

Are there last-minute flights available from Seattle to Bangkok for under $800?

There are currently 20+ open flights from Seattle to Bangkok within the next 7 days for less than $800.

What is the cheapest airline to fly from Seattle to Bangkok round-trip?

Singapore Airlines, at $636, was found to be the cheapest airline from Seattle to Bangkok.. Singapore Airlines is 15% cheaper than the average price of flights available within the next 90 days to this destination.

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

Consider Major Airline, American Airlines or Air Canada when booking your flight. These represent the most popular airlines when flying from Seattle to Bangkok.

What are the cheapest flights from Seattle to Bangkok?

Looking for the cheapest flight from Seattle to Bangkok? While on average our users pay $1,547, our data indicates the cheapest price to be $364. The most popular route (Seattle/Tacoma Intl - Bangkok Suvarnabhumi), is priced around $650.

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.

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) or Antigen (quick-test) 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.

$1 = ฿33.20

91.4 °F

10.9 ″

Airports servicing Seattle

Seattle (SEA)

Airports servicing Bangkok

Bangkok Suvarnabhumi (BKK)

Bangkok Don Mueang Intl (DMK)

Airline	Cheapest	Average	Flexibility	On-time	COVID-19 safety
XiamenAir	$459	$608	No cancel fee	49%	We couldn't confirm the COVID-19 safety measures taken by XiamenAir. Please check directly on their website for additional information.
Singapore Airlines	$525	$683	No cancel fee	81%
ANA	$587	$807	No cancel fee	80%
Asiana Airlines	$587	$785	No cancel fee	76%	We couldn't confirm the COVID-19 safety measures taken by Asiana Airlines. Please check directly on their website for additional information.
Korean Air	$616	$782	No cancel fee	81%
United Airlines	$624	$772	No cancel fee	69%
Hainan Airlines	$632	$879	No cancel fee	61%	We couldn't confirm the COVID-19 safety measures taken by Hainan Airlines. Please check directly on their website for additional information.
Delta	$632	$977	No cancel fee	N/A
Japan Airlines	$641	$838	No cancel fee	79%	We couldn't confirm the COVID-19 safety measures taken by Japan Airlines. Please check directly on their website for additional information.
EVA Air	$653	$881	No cancel fee	74%