Korean Air flights from Seattle to Bangkok Suvarnabhumi Airport (SEA - BKK)

SEA — BKK
8 Apr — 15 Apr1
1 adult
1 adult, Economy, 0 bags

Cheapflights users flying from Seattle to Bangkok on Korean Air typically fly into Bangkok Suvarnabhumi and depart from Seattle/Tacoma Intl. Select your dates above for pricing.

Korean Air flights from Seattle to Suvarnabhumi in 2026

Find detailed information about Korean Air flights from Seattle to Suvarnabhumi. Explore the options provided by Korean Air to plan your journey from Seattle to Suvarnabhumi. Data last updated 9 March 2026.

One-way from

฿12,318

Return from

฿24,445

Popular in

June

Cheapest in

September

Average price (all airlines)

฿23,905
Korean Air
  • Korean Air
  • 15/7
  • 1 total stop
  • 21h 45m total
  • Seattle to Bangkok
Korean Air
  • Korean Air
  • 7/7-12/8
  • 4 total stops
  • 75h 47m total
  • Seattle to Bangkok
Highest demand for flights from Seattle/Tacoma Intl to Bangkok Suvarnabhumi; 14% potential price increase.
Best time to find cheap flights from Seattle/Tacoma Intl to Bangkok Suvarnabhumi; 3% potential price drop.
Average price for all Seattle/Tacoma Intl to Bangkok Suvarnabhumi flights (one-way and round-trip).
  • Can I get a flight from Seattle to Bangkok Suvarnabhumi Airport on Korean Air for under ฿25,397?

    Cheapflights users have found 6 Korean Air flights for under ฿25,397 on the SEA-BKK route. Prices on flights to Bangkok Suvarnabhumi Airport from Seattle can vary based on many factors including dates. To look at price based on your preferred dates, click here.

Find Korean Air flight deals from Seattle to Suvarnabhumi

Enter your travel dates to find the best prices.

Cheapest Korean Air flights from Seattle to Suvarnabhumi
Explore the most affordable Korean Air flight options available from Seattle to Suvarnabhumi. Find the lowest fares with prices last updated on 9 March 2026.

Thu 23/412:50
SEA
-
BKK
1 stop20h 45m
Korean Air
Sun 3/521:40
BKK
-
SEA
1 stop27h 00m
Korean Air
Deal found 4/3฿25,397
Mon 27/407:35
SEA
-
BKK
2 stops26h 00m
Korean Air
Mon 11/521:40
BKK
-
SEA
1 stop27h 00m
Korean Air
Deal found 5/3฿25,556
Mon 20/407:35
SEA
-
BKK
2 stops26h 00m
Korean Air
Sun 7/623:30
BKK
-
SEA
1 stop25h 30m
Korean Air
Deal found 4/3฿25,587

How far ahead should I book a flight from Seattle to Bangkok Suvarnabhumi Airport with Korean Air?

Use this chart to determine the optimal time to book a return flight from Seattle to Suvarnabhumi. Price data was last updated on 6 March 2026.

Booking with Korean Air 87 days in advance of your planned departure date is, on average, the best time to get cheap flights from Seattle to Bangkok Suvarnabhumi Airport. The general trend is that the closer you book to the departure date, the more expensive your flight will be.

What is the cheapest month to book a flight from Seattle to Bangkok Suvarnabhumi Airport with Korean Air?

Currently, the most affordable month to book a Korean Air flight from Seattle to Bangkok Suvarnabhumi Airport in April, with an average price of ฿20,698. Conversely, traveling with Korean Air from Seattle to Bangkok Suvarnabhumi Airport in June will be the most expensive, with an average cost of ฿29,714. Various factors influence flight prices, so comparing airlines, departure airports, and times can help reduce costs.

Best time to book a flight from Seattle to Suvarnabhumi

Have a flexible travel schedule? Discover the best time to fly to Suvarnabhumi from Seattle with our price prediction graph.
Estimated return price
Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.

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See what others are saying about Korean Air

Read reviews and see what other travellers are saying about their experiences with Korean Air. Get insights from real passengers regarding the airline's services, customer satisfaction, and overall travel experience. Use these reviews to inform your decision when choosing Korean Air for your next flight. Reviews last updated 9 March 2026.
Korean Air
8.4
Very Good
1,202 reviews
Overview

Comfort

8.3

Food

8.1

Boarding

8.5

Entertainment

8.2

Crew

8.7

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