SEA - BKK

$396 Find Cheap Flights from Seattle to Bangkok - Compare and Save

This is the cheapest one-way flight price found by a KAYAK user in the last 72 hours by searching for a flight from Seattle to Bangkok departing on 9/10. Fares are subject to change and may not be available on all flights or dates of travel. Click the price to replicate the search for this deal.
1 adult
1 adult, Economy, 0 bags

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Everything you should know

Cheapest round-trip
$665
Typical prices: $707-$914
Singapore Airlines
Tue 11/3Sat 11/14
SEA - BKK • 1 stop
Cheapest one-way
$396
Typical prices: $337-$436
Air Canada
Thu 9/10
SEA - BKK • 2 stops
Nonstop flights
Not available
There are currently no direct flights between Seattle and Bangkok. You'll need at least 1 connection.
Insights
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Top layover airports
Incheon (ICN)
Cheapest • Avg $1,015 (round-trip)
Tokyo (NRT)
Shortest trip • 20h 02m (one-way)
Insights
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When to travel
March
Cheapest • 16% price drop
November
Most popular
Good to know
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Booking Insights
Flight Deals

Cheap Flights from Seattle to Bangkok (SEA-BKK)

 
Here are some of the best deals found on KAYAK recently from the most popular airlines for round-trip flights from Seattle to Bangkok that are departing in the next months. While these flights were available on KAYAK in the last 72 hours, prices and availability are subject to change and deals may expire.
Discover the best prices for you by selecting your travel dates on KAYAK.

Recent round-trip flight deals from Seattle to Bangkok

Tue, Nov 3 - Sat, Nov 14
Singapore Airlines Logo
8:45 am - 5:00 pmSEA  Seattle/Tacoma Intl-BKK Bangkok Suvarnabhumi
41h 15m1 stop Singapore Changi
Singapore Airlines Logo
9:40 am - 7:10 amBKK  Bangkok Suvarnabhumi-SEA Seattle/Tacoma Intl
36h 30m1 stop Singapore Changi
$665Singapore Airlines
Thu, Oct 29 - Fri, Nov 13
Singapore Airlines Logo
9:45 am - 2:35 pmSEA  Seattle/Tacoma Intl-BKK Bangkok Suvarnabhumi
38h 50m1 stop Singapore Changi
Singapore Airlines Logo
9:40 am - 7:10 amBKK  Bangkok Suvarnabhumi-SEA Seattle/Tacoma Intl
36h 30m1 stop Singapore Changi
$667Singapore Airlines
Mon, Sep 7 - Mon, Sep 21
Air Canada Logo
3:00 pm - 5:05 amSEA  Seattle/Tacoma Intl-BKK Bangkok Suvarnabhumi
24h 05m1 stop Vancouver Intl
Air Canada Logo
7:05 am - 2:22 pmBKK  Bangkok Suvarnabhumi-SEA Seattle/Tacoma Intl
21h 17m1 stop Vancouver Intl
$741Air Canada
Mon, Sep 7 - Mon, Sep 21
Air Canada Logo
10:40 am - 5:05 amSEA  Seattle/Tacoma Intl-BKK Bangkok Suvarnabhumi
28h 25m1 stop Vancouver Intl
Air Canada Logo
7:05 am - 10:47 pmBKK  Bangkok Suvarnabhumi-SEA Seattle/Tacoma Intl
29h 42m1 stop Vancouver Intl
$749Air Canada
Mon, Sep 7 - Mon, Sep 21
Multiple Airlines Logo
10:40 am - 5:05 amSEA  Seattle/Tacoma Intl-BKK Bangkok Suvarnabhumi
28h 25m1 stop Vancouver Intl
Multiple Airlines Logo
3:45 pm - 2:22 pmBKK  Bangkok Suvarnabhumi-SEA Seattle/Tacoma Intl
36h 37m2 stops Hong Kong Intl Vancouver Intl
$775Multiple Airlines
Sun, Nov 15 - Tue, Dec 8
Asiana Airlines Logo
12:10 am - 11:15 amSEA  Seattle/Tacoma Intl-BKK Bangkok Suvarnabhumi
20h 05m1 stop Incheon Intl
Asiana Airlines Logo
12:20 pm - 1:55 pmBKK  Bangkok Suvarnabhumi-SEA Seattle/Tacoma Intl
16h 35m1 stop Incheon Intl
$776Asiana Airlines
Thu, Sep 3 - Thu, Sep 24
Asiana Airlines Logo
12:10 am - 10:40 amSEA  Seattle/Tacoma Intl-BKK Bangkok Suvarnabhumi
20h 30m1 stop Incheon Intl
Asiana Airlines Logo
11:45 am - 3:15 pmBKK  Bangkok Suvarnabhumi-SEA Seattle/Tacoma Intl
17h 30m1 stop Incheon Intl
$776Asiana Airlines
Wed, Sep 2 - Wed, Sep 23
Multiple Airlines Logo
10:30 am - 11:00 pmSEA  Seattle/Tacoma Intl-BKK Bangkok Suvarnabhumi
22h 30m2 stops Calgary Tokyo Narita
Multiple Airlines Logo
11:45 am - 12:23 pmBKK  Bangkok Suvarnabhumi-SEA Seattle/Tacoma Intl
38h 38m2 stops Incheon Intl San Francisco
$777Multiple Airlines
Tue, Sep 1 - Mon, Sep 7
Hainan Airlines Logo
11:00 am - 11:00 pmSEA  Seattle/Tacoma Intl-BKK Bangkok Suvarnabhumi
22h 00m1 stop Beijing Capital
Hainan Airlines Logo
12:20 am - 9:00 amBKK  Bangkok Suvarnabhumi-SEA Seattle/Tacoma Intl
22h 40m1 stop Beijing Capital
$809Hainan Airlines
Sat, Sep 5 - Fri, Sep 11
Hainan Airlines Logo
11:00 am - 12:20 pmSEA  Seattle/Tacoma Intl-BKK Bangkok Suvarnabhumi
35h 20m1 stop Beijing Capital
Hainan Airlines Logo
12:25 am - 9:00 amBKK  Bangkok Suvarnabhumi-SEA Seattle/Tacoma Intl
22h 35m1 stop Beijing Capital
$810Hainan Airlines
Booking Insights

KAYAK's insights & trends for Seattle to Bangkok flights

Get data-powered insights and trends into flights from Seattle to Bangkok to help you find the cheapest flights, the best time to fly and much more.

How much is a round-trip flight from Seattle to Bangkok Suvarnabhumi Airport?

This analysis is based on the cheapest round-trip price found on KAYAK in the last 12 months by searching for a flight from Seattle to Bangkok Suvarnabhumi Airport departing in October.

Flight prices are below average for this route right now.

Flights to Bangkok Suvarnabhumi Airport from Seattle usually cost between $735 and $975 in October.
The lowest price found in the past 5 days was $667 on Singapore Airlines (Oct 29-Nov 13).

What is the cheapest month to fly from Seattle to Bangkok Suvarnabhumi Airport?

To calculate monthly average prices, KAYAK takes all prices for each month over the last year for round-trip flights from Seattle to Bangkok Suvarnabhumi Airport, removes the top 0.1% to account for outliers, and then takes the median of all values for each month.

The cheapest month for flights from Seattle to Bangkok Suvarnabhumi Airport is March, where tickets cost $745 (return) on average. On the other hand, the most expensive months are June and December, where the average cost of round-trip tickets is $1,275 and $1,232 respectively.

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

To calculate weekly average prices, KAYAK takes all prices for each week before departure over the last year for round-trip flights from Seattle to Bangkok Suvarnabhumi Airport, removes the top 0.1% to account for outliers, and then takes the average of all the values for each week.

To get a below average price on the flight from Seattle to Bangkok Suvarnabhumi Airport, you should book around 1 week before departure. For the absolute cheapest price, our data suggests you should book 18 weeks before departure.

Find deals

Good to know

Low season

May

Cheapest flight

$396
Best time to beat the crowds but there is an average 2% increase in price.
Most popular time to fly and prices are also 7% lower on average.
Flight from Seattle to Bangkok

When to book flights from Seattle to Bangkok

Are your dates flexible? Find out the best times to travel from Seattle to Bangkok based on our flight data from the last year. Discover the cheapest month and even day to fly.
Estimated round-trip price
KAYAK looks at all historical flight data for each date to provide a predicted price for one-way trips or round-trips with a duration up to 40 days. While we try to provide actual minimum prices for each date, some prices are predictions and actual prices may differ.

FAQs for booking Seattle to Bangkok flights

  • What is the cheapest flight from Seattle to Bangkok Suvarnabhumi Airport?

    In the last 5 days, the lowest price for a flight from Seattle to Bangkok Suvarnabhumi Airport was $396 for a one-way ticket and $665 for a round-trip.

  • Do I need a passport to fly between Seattle and Bangkok?

    Yes, you’ll need a passport to travel to Bangkok from Seattle.

  • Which aircraft models fly most regularly from Seattle to Bangkok?

    We unfortunately don’t have that data for this specific route.

  • Which airline alliances offer flights from Seattle to Bangkok?

    oneworld, SkyTeam, and Star Alliance are the airline alliances operating flights between Seattle and Bangkok, with oneworld being the most commonly used for this route.

  • What is the most popular layover when flying to Bangkok from Seattle?

    Taipei City is the most popular layover city among KAYAK users traveling from Seattle to Bangkok.

  • Which is the best airline for flights from Seattle to Bangkok, STARLUX Airlines or EVA Air?

    The two airlines most popular with KAYAK users for flights from Seattle to Bangkok are STARLUX Airlines and EVA Air. With an average price for the route of $931 and an overall rating of 8.8, STARLUX Airlines is the most popular choice. EVA Air is also a great choice for the route, with an average price of $896 and an overall rating of 8.5.

  • How does KAYAK find such low prices on flights from Seattle to Bangkok?

    KAYAK is a travel search engine. That means we look across the web to find the best prices we can find for our users. With over 2 billion flight queries processed yearly, we are able to display a variety of prices and options on flights from Seattle to Bangkok.

  • How does KAYAK's flight Price Forecast tool help me choose the right time to buy my flight ticket from Seattle to Bangkok?

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to Bangkok from Seattle is likely to change within 7 days, so travelers know whether to wait or book now.

  • What is the Hacker Fare option on flights from Seattle to Bangkok?

    Hacker Fares allow you to combine one-way tickets in order to save you money over a traditional round-trip ticket. You could then fly to Bangkok with an airline and back to Seattle with another airline. Booking your flights between Seattle and BKK can sometimes prove cheaper using this method.

  • What is KAYAK's "flexible dates" feature and why should I care when looking for a flight from Seattle to Bangkok?

    Sometimes travel dates aren't set in stone. If your preferred travel dates have some wiggle room, flexible dates will show you all the options when flying to Bangkok from Seattle up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

Everything you need to know for your flight from Seattle to Bangkok

Information on your arrival and departure airports

Seattle (SEA)
Suvarnabhumi (BKK)