SEA - BKK

$422 Find Cheap Flights from Seattle to Bangkok Suvarnabhumi Airport - Compare and Save

1 adult
1 adult, Economy, 0 bags

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Everything you should know

Cheapest round-trip
$758
Typical prices: $753-$1,057
Singapore Airlines
Wed 2/21Mon 2/26
SEA - BKK • 1 stop
Cheapest one-way
$422
Typical prices: $403-$579
Hainan Airlines
Sun 1/28
SEA - BKK • 1 stop
Nonstop flights
Not available
There are currently no direct flights between Seattle and Bangkok Suvarnabhumi Airport. You'll need to take a connecting flight to reach the destination.
Insights
Insights
When to book
12 weeks
in advance
Our data shows that travelers who book at least 12 weeks in advance save around 27% compared to booking last minute.
Insights
Insights
When to travel
March
Cheapest • 10% price drop
December
Most popular
Good to know
+1
Good to know
+1
Top layover airports
Manila Ninoy Aquino Intl (MNL)
Cheapest • Avg $714 (round-trip)
Taipei City Taiwan Taoyuan Intl (TPE)
Shortest trip • 18h 18m (one-way)
Insights
Insights
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KAYAK searches 100s of sites at once to find you the best travel deals.
We hope you love your trip to Bangkok Suvarnabhumi Airport!
Flight Deals
Booking Insights
Flight Deals

Cheap Flights from Seattle to Bangkok (SEA-BKK)

 
Discover the best prices for you by selecting your travel dates on KAYAK.

Recent round-trip flight deals from Seattle to Bangkok

Sun, Feb 21 - Fri, Feb 26
Singapore Airlines Logo
8:40 am - 5:00 pmSEA  Seattle/Tacoma Intl-BKK Bangkok Suvarnabhumi
41h 20m1 stop Singapore Changi
Singapore Airlines Logo
8:15 pm - 7:05 amBKK  Bangkok Suvarnabhumi-SEA Seattle/Tacoma Intl
25h 50m1 stop Singapore Changi
$758Singapore Airlines
Sat, Apr 3 - Sat, Apr 10
Singapore Airlines Logo
10:15 am - 12:20 pmSEA  Seattle/Tacoma Intl-BKK Bangkok Suvarnabhumi
36h 05m1 stop Singapore Changi
Singapore Airlines Logo
9:15 pm - 8:45 amBKK  Bangkok Suvarnabhumi-SEA Seattle/Tacoma Intl
25h 30m1 stop Singapore Changi
$760Singapore Airlines
Sun, Mar 28 - Thu, Apr 22
Philippine Airlines Logo
11:55 pm - 9:20 amSEA  Seattle/Tacoma Intl-BKK Bangkok Suvarnabhumi
19h 25m1 stop Manila Ninoy Aquino Intl
Philippine Airlines Logo
10:25 am - 7:35 pmBKK  Bangkok Suvarnabhumi-SEA Seattle/Tacoma Intl
23h 10m1 stop Manila Ninoy Aquino Intl
$769Philippine Airlines
Sun, Feb 7 - Wed, Feb 17
Philippine Airlines Logo
9:30 pm - 12:05 pmSEA  Seattle/Tacoma Intl-BKK Bangkok Suvarnabhumi
23h 35m1 stop Manila Ninoy Aquino Intl
Philippine Airlines Logo
9:55 am - 6:45 pmBKK  Bangkok Suvarnabhumi-SEA Seattle/Tacoma Intl
23h 50m1 stop Manila Ninoy Aquino Intl
$776Philippine Airlines
Sat, Jan 16 - Wed, Jan 20
Hainan Airlines Logo
10:20 am - 11:35 pmSEA  Seattle/Tacoma Intl-BKK Bangkok Suvarnabhumi
22h 15m1 stop Beijing Capital
Hainan Airlines Logo
11:50 am - 8:05 amBKK  Bangkok Suvarnabhumi-SEA Seattle/Tacoma Intl
35h 15m1 stop Chongqing Jiangbei Intl
$788Hainan Airlines
Thu, Jan 14 - Mon, Jan 18
Hainan Airlines Logo
10:05 am - 10:40 amSEA  Seattle/Tacoma Intl-BKK Bangkok Suvarnabhumi
33h 35m1 stop Chongqing Jiangbei Intl
Hainan Airlines Logo
1:05 am - 8:20 amBKK  Bangkok Suvarnabhumi-SEA Seattle/Tacoma Intl
22h 15m1 stop Beijing Capital
$788Hainan Airlines
Wed, Jan 20 - Wed, Jan 27
Multiple Airlines Logo
8:40 am - 12:10 pmSEA  Seattle/Tacoma Intl-BKK Bangkok Suvarnabhumi
36h 30m1 stop Singapore Changi
Multiple Airlines Logo
7:30 pm - 8:05 amBKK  Bangkok Suvarnabhumi-SEA Seattle/Tacoma Intl
27h 35m2 stops Haikou Meilan Intl Chongqing Jiangbei Intl
$802Multiple Airlines
Fri, Mar 5 - Wed, Mar 10
Multiple Airlines Logo
8:40 am - 11:00 amSEA  Seattle/Tacoma Intl-BKK Bangkok Suvarnabhumi
35h 20m1 stop Singapore Changi
Multiple Airlines Logo
7:30 pm - 8:05 amBKK  Bangkok Suvarnabhumi-SEA Seattle/Tacoma Intl
27h 35m2 stops Haikou Meilan Intl Chongqing Jiangbei Intl
$803Multiple Airlines
Wed, Apr 7 - Wed, Apr 28
Cathay Pacific Logo
11:45 am - 4:30 pmSEA  Seattle/Tacoma Intl-BKK Bangkok Suvarnabhumi
38h 45m1 stop Hong Kong Intl
Cathay Pacific Logo
3:00 pm - 10:05 amBKK  Bangkok Suvarnabhumi-SEA Seattle/Tacoma Intl
33h 05m1 stop Hong Kong Intl
$880Cathay Pacific
Mon, Jan 18 - Mon, Mar 1
Cathay Pacific Logo
10:25 am - 2:05 pmSEA  Seattle/Tacoma Intl-BKK Bangkok Suvarnabhumi
36h 40m1 stop Hong Kong Intl
Cathay Pacific Logo
5:00 pm - 8:45 amBKK  Bangkok Suvarnabhumi-SEA Seattle/Tacoma Intl
30h 45m1 stop Hong Kong Intl
$880Cathay Pacific
Booking Insights

Price, demand and travel trends for Seattle to Bangkok Suvarnabhumi Airport flights

Use KAYAK data on prices, travel dates, airlines and seasonal trends to compare options and book flights with more confidence.

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

Round-trip flights from Seattle to Bangkok Suvarnabhumi Airport typically range from $753 to $1,057. The lowest price found in the past 5 days was $758, on Singapore Airlines.

What's the cheapest day of the week to fly from Seattle to Bangkok Suvarnabhumi Airport?

Based on deals KAYAK users found in the last 12 months, Sunday is the cheapest day of the week to fly from Seattle to Bangkok Suvarnabhumi Airport. It’s 5% cheaper than the average day, while Thursday is the most expensive, with prices 5% higher.

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

•March is the cheapest month to fly from Seattle to Bangkok Suvarnabhumi Airport at $779 round-trip.
•June ($1,275) and December ($1,248) are the most expensive months.
•The price difference between flying in the cheapest and most expensive months is 63% on average.
This is based on KAYAK aggregated and averaged internal data over the past 12 months.

When are flights from Seattle to Bangkok Suvarnabhumi Airport the cheapest?

Flights from Seattle to Bangkok Suvarnabhumi Airport are cheapest 12 weeks before departure. Booking in this window typically costs about 27% less than the average last-minute fare (within 2 weeks of the flight), based on KAYAK data.

Find deals

Key details for Seattle to Bangkok Suvarnabhumi Airport flights

Low season

May

Cheapest flight

$422
Beat the crowds with an average 27% drop in travelers.
The most popular month to fly with an average 39% increase in travelers.
One-way flight from Seattle to Bangkok Suvarnabhumi Airport

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

Your Seattle to Bangkok Suvarnabhumi Airport flight questions, answered

Find helpful answers about this route, including flight times, airports, airlines and booking tips.

  • What cabin classes can I book on flights from Seattle to Bangkok Suvarnabhumi Airport?

    Four cabin classes are available on flights from Seattle to Bangkok Suvarnabhumi Airport:

    • Economy Class
    • Premium Economy Class
    • Business Class
    • First Class

    Prices vary by airline.

  • How long is a flight from Seattle to Bangkok Suvarnabhumi Airport?

    A nonstop flight from Seattle to Bangkok Suvarnabhumi Airport takes 00m, covering 7,443 miles.

  • Do I need a passport to fly from Seattle to Bangkok Suvarnabhumi Airport?

    Yes, a valid passport is required for this international route. Many destinations require at least six months of validity beyond your travel dates. Check your passport expiry well before booking.

  • How much should I expect to pay for a Seattle to Bangkok Suvarnabhumi Airport flight?

    Round-trip flights from Seattle to Bangkok Suvarnabhumi Airport range from $753 to $1,057, with an average of $868 over the past 12 months. Anything below $753 counts as a good deal.

  • How expensive are last-minute Seattle to Bangkok Suvarnabhumi Airport flights?

    Last-minute fares on this route (booked within two weeks of departure) run 19% above the $868 route average. Book 12 weeks before departure for the lowest fares.

  • How are flight prices from Seattle to Bangkok Suvarnabhumi Airport looking right now?

    One-way fares from Seattle to Bangkok Suvarnabhumi Airport are currently lower than usual. Average one-way flight prices are about $431, which is 8% below the typical average for this route.

  • What car rental options are available at Bangkok Suvarnabhumi Airport (BKK)?

    Bangkok Suvarnabhumi Airport (BKK) hosts 5 major car rental companies, with daily rates averaging $30 for economy cars. Top options include:

    • Drive Car Rental
    • Yesaway
    • Alamo
    • Sixt
    • Hertz

  • Which airports can I use when flying from Seattle to Bangkok Suvarnabhumi Airport?

    Flights from Seattle to Bangkok Suvarnabhumi Airport usually depart from Seattle/Tacoma Intl (SEA) and arrive at Bangkok Suvarnabhumi (BKK).

  • Which airports do connecting flights from Seattle to Bangkok Suvarnabhumi Airport pass through?

    One-stop flights from Seattle to Bangkok Suvarnabhumi Airport most commonly connect through:

    • Taipei City Taiwan Taoyuan Intl (TPE) - 38% of one-stop connections
    • Incheon Intl (ICN) - 29% of one-stop connections
    • Singapore Changi (SIN) - 16% of one-stop connections
    • Tokyo Haneda (HND) - 10% of one-stop connections

  • Can I save money by using flexible dates for flights from Seattle to Bangkok Suvarnabhumi Airport?

    Yes. Flexible dates can save you up to 9% on flights from Seattle to Bangkok Suvarnabhumi Airport. Sunday is the cheapest departure day at $833 round-trip on average, while Thursday is the most expensive at $912, a difference of $79.

    Cheaper weekend fares like these are typical of routes dominated by weekday business travel.

  • How much time can I save by choosing a different layover airport from Seattle to Bangkok Suvarnabhumi Airport?

    Flying via Taipei City Taiwan Taoyuan Intl (TPE) gives the shortest average 1-stop total travel time at 18h 18m, compared with 18h 27m via Tokyo Narita (NRT) and 18h 46m via Vancouver Intl (YVR).

  • What is the time difference between Seattle and Bangkok Suvarnabhumi Airport?

    Bangkok Suvarnabhumi Airport is 15 hours ahead of Seattle (Indochina Time vs Pacific Time). Plan for the time shift when scheduling connections or first-day activities.

  • What popular places can I visit in Bangkok Suvarnabhumi Airport?

    Some of the most popular sights in Bangkok Suvarnabhumi Airport are Pratunam, Siam Square and Thailand Cultural Center. These are among the most viewed places in Bangkok Suvarnabhumi Airport on KAYAK.

Your guide to booking Seattle to Bangkok Suvarnabhumi Airport flights

Get tips on when to book, when to fly and what to know before your trip.
  • If your dates are flexible, aim for a Sunday departure and avoid flying on Thursday. On this route, Sunday flights average $833, about $79 less than Thursday fares (9% savings) based on the last 12 months.
  • For the best chance at a low fare, aim to book around 12 weeks before you fly. On this route, that window historically saves about 27% versus last-minute pricing (KAYAK booking data, last 12 months).
  • If you can choose when to travel, plan your Seattle to Bangkok Suvarnabhumi Airport trip for March. Fares historically average $779 round-trip in that month - typically $496 less than the most expensive month, which is June (based on the last 12 months).
  • If you're arriving late at night and need somewhere to stay, check out these hotels close to Bangkok Suvarnabhumi Airport.

    • Hyatt Regency Bangkok Suvarnabhumi Airport
    • Siam Mandarina Bangkok Suvarnabhumi Airport Hotel (Free Shuttle)
    • Suvarnabhumi Ville Airport Hotel

More options for your flight from Seattle to Bangkok

Complete your trip to Bangkok with a hotel stay or car rental

Car rentals in Bangkok
Hotels in Bangkok
Vacations in Bangkok