Find Cheap Flights from Seattle to Bangkok – Compare and Save

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Everything you should know

Direct flights
Not available
There are currently no direct flights between Seattle and Bangkok. You'll need to take a connecting flight to reach the destination.
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Top routes
SEA - BKK
Cheapest • 3% average savings
SEA - DMK
Most popular
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Insights
When to book
8 weeks
in advance
Our data shows that travellers who book at least 8 weeks in advance save around 17% compared to booking last minute.
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Insights
When to travel
March
Cheapest • 10% price drop
December
Most popular
Good to know
+1
Good to know
+1
Top stopover airports
Manila Ninoy Aquino Intl (MNL)
Cheapest • Avg ฿22,623 (return)
Taipei City Taiwan Taoyuan Intl (TPE)
Shortest trip • 18h 18m (one-way)
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Flight Deals

Cheap Flights from Seattle to Bangkok (SEA-BKK)

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

Recent return flight deals from Seattle to Bangkok

Multiple Airlines Logo
SEA  Seattle/Tacoma Airport-TH1 Glasgow Thorntonhall
19285 kmmulti-stop
Multiple Airlines Logo
TH1  Glasgow Thorntonhall-SEA Seattle/Tacoma Airport
19285 kmmulti-stop
Multiple Airlines
Booking Insights

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

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

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

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. It's 5% cheaper than the average day, while Thursday is the most expensive, with prices 4% higher.

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

•March is the cheapest month to fly from Seattle to Bangkok at ฿26,144 return.
•June (฿43,269) and December (฿40,736) are the most expensive months.
•The price difference between flying in the cheapest and most expensive months is 65% on average.
This is based on KAYAK aggregated and averaged internal data over the past 12 months.

When are flights from Seattle to Bangkok the cheapest?

Flights from Seattle to Bangkok are cheapest 8 weeks before departure. Booking in this window typically costs about 17% less than the average last-minute fare (within 2 weeks of the flight), based on KAYAK data.

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Key details for Seattle to Bangkok flights

Low season

May
Beat the crowds with an average 31% drop in travellers.
The most popular month to fly with an average 44% increase in travellers.

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 return price

Your Seattle to Bangkok flight questions, answered

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

  • Which cabin classes can I book on flights from Seattle to Bangkok?

    Two cabin classes are available on flights from Seattle to Bangkok:

    • Economy class
    • Business Class

  • How long is a flight from Seattle to Bangkok?

    A direct flight from Seattle to Bangkok takes 00m, covering 19,285 km.

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

    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 flight?

    Return flights from Seattle to Bangkok range from ฿25,048 to ฿35,680, with an average of ฿29,047 over the past 12 months. Anything below ฿25,048 counts as a good deal.

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

    Last-minute fares on this route (booked within two weeks of departure) run 10% above the ฿29,047 route average. Book 8 weeks before departure for the lowest fares.

  • What car rental options are available in Bangkok?

    Since Bangkok is served by multiple airports, car rental options and rates can vary depending on which one you fly into.
    Near Bangkok Suvarnabhumi Airport (BKK) – daily rates from around ฿436:

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

    Near Bangkok Don Mueang Intl Airport (DMK) – daily rates from around ฿229:

    • Drive Car Rental
    • Alamo
    • Thai Rent
    • Chic Car Rent
    • Hertz

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

    Flights from Seattle to Bangkok usually depart from Seattle/Tacoma Intl (SEA) and may arrive at several airports in Bangkok area, including Bangkok Suvarnabhumi (BKK) and Bangkok Don Mueang Intl (DMK).

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

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

    • Taipei City Taiwan Taoyuan Intl (TPE) – 38% of one-stop connections
    • Incheon Intl (ICN) – 30% of one-stop connections
    • Singapore Changi (SIN) – 14% 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?

    Yes. Flexible dates can save you up to 9% on flights from Seattle to Bangkok. Sunday is the cheapest departure day at ฿27,765 return on average, while Thursday is the most expensive at ฿30,467, a difference of ฿2,702.

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

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

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

  • What is the time difference between Seattle and Bangkok?

    Bangkok is 14 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?

    Some of the most popular sights in Bangkok are Victory Monument, Pratunam, and Siam Square. These are among the most viewed places in Bangkok on KAYAK.

  • Are there medical facilities at BKK?

    Yes, BKK has medical facilities that provide emergency services for passengers who become ill at the airport. Vejthani International Hospital operates a service desk near Gate 10 in the airport's arrival hall, where travelers can get information and transfers to the hospital for urgent medical care.

  • Can I smoke at SEA?

    Yes, but only in designated areas on the lower airport road sidewalk outside the baggage claim area. Smoking is not permitted inside the terminal, as SEA is a non-smoking facility.

Your guide to booking Seattle to Bangkok 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 ฿27,765, which is about ฿2,702 less than Thursday fares (9% savings) based on the last 12 months.
  • For the best chance at a low fare, aim to book around 8 weeks before you fly. On this route, that window historically saves about 17% versus last-minute pricing (KAYAK booking data, last 12 months).
  • If you can choose when to travel, plan your Seattle to Bangkok trip for March. Fares historically average ฿26,144 return in that month – typically ฿17,125 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, hotels close to the airport you're flying into can be a convenient option.

    Near Bangkok Suvarnabhumi Airport

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

    Near Bangkok Don Mueang Intl Airport

    • Amari Don Muang Airport Bangkok
    • The Royal Bee Apart Hotel
  • If you want to exchange dollars for Thai Baht before departure, stop by the currency exchange counter in Baggage Claim at SEA. You can also wait until you land at Suvarnabhumi Airport (BKK), where currency exchange counters are in the arrivals hall.
  • If you have limited mobility at Bangkok Suvarnabhumi Airport (BKK), request wheelchair service or other extra assistance. After check-in, contact airline staff if you need a wheelchair to enter the restricted area.

More options for your flight from Seattle to Bangkok

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

Car rentals in Bangkok
Hotels in Bangkok