To Bangkok

Cheap Flights from Seattle to Bangkok

Browse current best options from Seattle. Become a member to unlock all deals and get alerts when new deals appear.

Deals from

Seattle

RatePunk searches hundreds of travel sites at once for deals on flights to Bangkok

Prices updated 24 days ago

486,190 searches this week

171 airlines compared

80%+ AI score for best value

Fares are subject to change and may not be available for all dates. (Data last updated May 29, 2026.)

Today’s best flight deals from Seattle to Bangkok

Explore current cheapest deals departing from Seattle to Bangkok

Round trip

Sort by: Cheapest

October 15 - October 22

Cheapest

Best

SEA - Bangkok

$934

$671

Round trip

October 8 - October 28

Best

Earliest

SEA - Bangkok

$920

$672

Round trip

October 20 - October 31

Best

SEA - Bangkok

$923

$675

Round trip

October 13 - October 23

Best

SEA - Bangkok

$925

$675

Round trip

November 11 - November 19

SEA - Bangkok

$885

$675

Round trip

October 22 - October 29

Best

SEA - Bangkok

$934

$676

Round trip

October 22 - October 31

Best

SEA - Bangkok

$929

$679

Round trip

October 8 - October 30

Best

Earliest

SEA - Bangkok

$920

$679

Round trip

October 8 - October 15

Best

Earliest

SEA - Bangkok

$932

$679

Round trip

November 10 - November 17

SEA - Bangkok

$887

$679

Round trip

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Route Intelligence — 486,190 Searches this Week

Insights for flights from Seattle to Bangkok

A typical journey from Seattle to Bangkok takes about 28h 5m, including connections. This reflects the reality that most itineraries connect at least once, with the majority of connecting flights involving 2 stopovers. Given the significant travel time, planning for connections is an important part of the trip.

For travelers seeking cheap flights from Seattle to Bangkok, prices are typically $632–$1178, with a median of $850. Right now, fares are above the typical level for this route. Only about 5% of recent fares were classified as a good price, indicating that deals can be competitive.

When is the cheapest time to fly from Seattle to Bangkok? The data shows that February is typically the most affordable month, with a median fare of $459. Following closely are March, with a median of $578, and January, with a median of $585. These months offer significantly lower median prices compared to the overall typical range.

The route from Seattle to Bangkok covers a substantial distance of 11,987 kilometers. This classifies it as a long-haul journey, meaning you should expect extended travel times and plan accordingly for the duration of the flight and any layovers.

How much is a round trip from Seattle to Bangkok

Regular price: $822 - $1,592

Prices for flights from Seattle to Bangkok are currently below the regular range.

The regular price range for flights from Seattle to Bangkok is between $822 and $1592. The current lowest deal is $671 with Singapore Airlines, for travel from Oct 15-Oct 22.

now $671

Low $822

High $1,592

The cheapest time to fly from Seattle to Bangkok

The cheapest month to fly from Seattle to Bangkok is February, with a median price of $459. The most expensive month is November, with a median price of $1269. Prices are generally lower from January to September.

February

Cheapest

Flights from $459

November

Most Expensive

Flights from $1,269

Jan

Feb

Mar

Apr

May

Jun

Jul

Aug

Sep

Oct

Nov

Dec

Direct flights from Seattle to Bangkok

Singapore Airlines

Korean Air

Alaska Airlines, Inc.

All Nippon Airways

Last-minute flights going from Seattle to Bangkok

Thu, Jul 2

⌛ Last-Minute

SEA - Bangkok

Seattle (SEA) - Bangkok (DMK)

EVA Air

$1,167

$973

One-way

Wed, Jul 8

⌛ Last-Minute

SEA - Bangkok

Seattle (SEA) - Bangkok (BKK)

Korean Air

$983

$819

One-way

Fri, Jul 10

⌛ Last-Minute

SEA - Bangkok

Seattle (SEA) - Bangkok (BKK)

Korean Air

$1,004

$836

One-way

Wed, Aug 12

⌛ Last-Minute

SEA - Bangkok

Seattle (SEA) - Bangkok (BKK)

Korean Air

$879

$771

One-way

Wed, Aug 12

⌛ Last-Minute

SEA - Bangkok

Seattle (SEA) - Bangkok (BKK)

Korean Air

$878

$771

One-way

Thu, Aug 13

⌛ Last-Minute

SEA - Bangkok

Seattle (SEA) - Bangkok (BKK)

Korean Air

$882

$771

One-way

Biggest price drops on these dates for flights from Seattle to Bangkok

13 nights

Dec 1 - Dec 14

$1,170 → $769

34%

5 nights

Dec 2 - Dec 7

$1,160 → $766

34%

7 nights

Dec 1 - Dec 8

$1,158 → $765

34%

15 nights

Dec 2 - Dec 17

$1,171 → $789

33%

Popular Airports to fly from Seattle to Bangkok

Seattle - Bangkok route insights

💸 Price insights

Recent fares are below the typical level

Recent fares from Seattle to Bangkok are below the typical level, with deals around $671.

📅 Best time to fly

February is historically cheapest at $459

Historically, February is the cheapest month to fly from Seattle to Bangkok, with a median price of $459.

⏱️ Flight duration

Connecting flights average 28h 5m

Flights from Seattle to Bangkok typically involve 2 stopovers, with a median duration of 28h 5m.

✈️ Airlines & availability

Deals are frequent, with over 1 per day

Deals from Seattle to Bangkok are frequent, with over 1 deal per day historically.

🏆 Airline highlight

Singapore Airlines offers deals on this route

Singapore Airlines has historically offered deals on flights from Seattle to Bangkok.

🎯 Booking tip

Consider flying in February for best prices

To find the lowest prices, consider flying in February, when the median price is $459.

Seattle main airports to depart from

Seattle–Tacoma International (SEA)

Cheapest

Seattle–Tacoma International offers flights to Bangkok, providing a convenient departure point for your journey.

📍 ~20 km from Seattle city center (reachable by car or train)

💸 Flights from ~$671

Boeing Field (BFI)

Boeing Field is an alternative departure option for flights to Bangkok from the Seattle area.

📍 ~10 km from Seattle city center (reachable by car)

💸 Flights from ~$1555

Kenmore Air Harbor Seaplane Base (LKE)

Kenmore Air Harbor Seaplane Base is another Seattle area airport for flights to Bangkok.

📍 ~5 km from Seattle city center (reachable by car)

💸 Flights from ~$1619

Bangkok main airports to arrive at

Suvarnabhumi (BKK)

Cheapest

Suvarnabhumi Airport is a primary arrival option for flights from Seattle to Bangkok.

📍 ~25 km from city center (reachable by car)

💸 Flights from ~$671

Don Mueang International (DMK)

Don Mueang International Airport is an alternative arrival option for flights from Seattle to Bangkok.

📍 ~20 km from city center (reachable by car)

💸 Flights from ~$973

Airports nearby Bangkok used as alternative

U-Tapao International (UTP)

U-Tapao is a practical alternative for Bangkok due to its proximity and role as a secondary hub.

📍 ~135 km from Bangkok (reachable by car)

💸 Flights from ~$1195

Hua Hin (HHQ)

Hua Hin is convenient for travelers located in the southern part of Bangkok with direct road and rail access.

📍 ~145 km from Bangkok (reachable by car)

💸 Flights from ~$1141

Trat (TDX)

Trat offers reliable domestic connections and is accessible by road within a few hours.

📍 ~235 km from Bangkok (reachable by car)

💸 Flights from ~$1023

Khon Kaen (KKC)

Cheapest

Khon Kaen is a major regional hub with high frequency of domestic flights and multiple airline choices.

📍 ~400 km from Bangkok (reachable by car)

💸 Flights from ~$951

Udon Thani International (UTH)

Udon Thani International offers frequent daily connections to various domestic points with a large terminal.

📍 ~490 km from Bangkok (reachable by car)

💸 Flights from ~$955

Business & First Class Flight Deals to Bangkok

78% AI deal score

$4,803

From SEA

Elite

Jul 07

Bangkok, Thailand

78% AI deal score

$4,804

From SEA

Elite

Oct 23

Bangkok, Thailand

78% AI deal score

Bangkok, Thailand

69% AI deal score

$8,526

From SEA

Elite

Jul 25

Bangkok, Thailand

68% AI deal score

$5,440

Frequently Asked Questions About Flights to Bangkok

Finding affordable flights often involves comparing prices across different airlines and booking sites. Using flight comparison tools can help you see various options in one place. Consider being flexible with your travel dates to potentially uncover better deals.

Booking flights in advance can often lead to better prices, though the ideal booking window can vary. Prices may fluctuate, so monitoring fares over time can be beneficial. Generally, booking several weeks or months before your intended departure may offer more options.

Comparing nearby airports can sometimes reveal more economical flight options. While it may add to your ground travel time, the savings on airfare could be significant. Always factor in the cost and convenience of transportation to and from alternative airports.

Related routes

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