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Flights from Seattle to Bangkok

Compare 2 flight options on JAL

* Based on 20 flight price data points (fetched: 2026-02-14 〜 2026-02-22). Not real-time data and may not cover all departure dates. Please check the airline's official website for the latest fares and availability.

Lowest Fare$1,743.00
Flight Time16h 55m - 27h 10m
Stops1 stop

Fares by Cabin Class

Economy$1,743 ~ $4,650
Business$6,042 ~ $8,051

Available Route Options

2 different routing options available for this route

Outbound/ReturnFlight TimeStopsEconomyBusiness
OutboundSEA Seattle → NRT Narita → BKK Bangkok
ReturnBKK Bangkok → NRT Narita → SEA Seattle
19h 35m16h 55m
1stop1stop
$1,743~$6,042~
OutboundSEA Seattle → NRT Narita → BKK Bangkok
ReturnBKK Bangkok → HND Haneda → SEA Seattle
19h 35m27h 10m
1stop1stop
$1,775~$6,051~
Book on Japan Airlines Official Website→
Search real-time Seattle to Bangkok flights on Expedia→

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Compare fares from different airlines operating on this route. Click on any airline to view detailed flight information and mileage earning potential.

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Miles & Status Points Earning

(when crediting to JAL Mileage Bank)

When crediting this Japan Airlines flight to JAL Mileage Bank, you earn both FLY ON Points (for elite status) and Miles (for award tickets). Here's how they work:

  • FLY ON Points: FLY ON Points are used for elite status qualification. Accumulate enough points within a calendar year to achieve higher status tiers, which unlock benefits like lounge access, priority boarding, bonus miles, and complimentary upgrades. Status points are calculated based on fare price or flight distance depending on the airline.
  • Miles: Miles are your reward currency for free flights. Redeem accumulated miles for award tickets on the airline and its partners. Miles earned depend on flight distance and your booking class. Higher booking classes earn more miles per flight.

The "FLY ON Points/$100" and "Miles/$100" columns show earning efficiency - higher numbers mean better value for your money. Compare different cabin classes to find the best balance between comfort and mileage earning.

As a oneworld member, Japan Airlines flights can be credited to partner programs. Compare earning potential:Executive Club, AAdvantage

CabinFareFLY ON PointsFLY ON Points/$100MilesMiles/$100
Economy$1,743 - $4,6505,446 - 19,756286 - 5434,584 - 15,288241 - 389
Business$6,042 - $8,05124,294302 - 40219,108237 - 316
Learn more about JAL Mileage Bank →

Flight Itineraries & Booking Class Details

Browse 2 available flight options from Seattle to Bangkok. Each itinerary shows the route, layover cities, flight duration, and detailed fare information.

📘What are booking classes?

Even within the same Economy cabin, tickets have hidden categories called "booking classes." Cheaper tickets get lower booking classes (Q, V, etc.) while expensive tickets get higher ones (Y, B, etc.). This dramatically affects how many miles you earn. On popular dates, cheaper booking classes sell out first, so closer to departure you may only find expensive fares—which do earn more miles. Click any fare to see the calculation details.

💡Smart booking tips

To maximize miles earned per dollar spent, look for fares with higher "Points/cost" or "Miles/cost" values. However, keep in mind that booking class also affects change/cancellation flexibility—cheaper fares often have stricter policies.

Flight List
SEASeattle → NRTNarita → BKKBangkok(19.6h+)BKKBangkok → NRTNarita → SEASeattle(16.9h+)
15,288 mi
Economy (Booking Class Q, Q, O, O)
$1,743 - $1,903
5,446FLY ON Points286-312 FLY ON Points/$100
4,584Miles241-263 Miles/$100
▼
Economy (Booking Class N, N, S, S)
$1,767 - $1,927
8,061FLY ON Points418-456 FLY ON Points/$100
6,113Miles317-346 Miles/$100
▼
Economy (Booking Class S, S, O, O)
$1,957 - $2,483
8,061FLY ON Points325-412 FLY ON Points/$100
6,113Miles246-312 Miles/$100
▼
Economy (Booking Class Y)
$4,642 - $4,643
19,756FLY ON Points426-426 FLY ON Points/$100
15,288Miles329 Miles/$100
▼
Business (Booking Class I)
$6,042 - $7,543
24,294FLY ON Points322-402 FLY ON Points/$100
19,108Miles253-316 Miles/$100
▼
SEASeattle → NRTNarita → BKKBangkok(19.6h+)BKKBangkok → HNDHaneda → SEASeattle(27.2h+)
15,288 mi
Economy (Booking Class N, N, S, S)
$1,775 - $1,935
8,061FLY ON Points417-454 FLY ON Points/$100
6,113Miles316-344 Miles/$100
▼
Economy (Booking Class S)
$1,965 - $2,125
10,676FLY ON Points502-543 FLY ON Points/$100
7,642Miles360-389 Miles/$100
▼
Economy (Booking Class Y)
$4,650
19,756FLY ON Points425 FLY ON Points/$100
15,288Miles329 Miles/$100
▼
Business (Booking Class I)
$6,051 - $8,051
24,294FLY ON Points302-402 FLY ON Points/$100
19,108Miles237-316 Miles/$100
▼

FAQ

You can earn between 5,446 and 24,294 FLY ON Points depending on booking class. Economy: 5,446–19,756. Business: 24,294–24,294.

The lowest fare starts at $1,743. Economy from $1,743. Business from $6,042.

Economy class offers better FLY ON Points per cost. Economy: up to 543.3, Business: up to 402.1.

Yes. Japan Airlines flights can also be credited to: Tier Points (BA), Loyalty Points (AA).

The shortest flight time is approximately 19.6h.

Bangkok on other airlines

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Other destinations from Seattle

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OriginSEASeattleChange
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DestinationBKKBangkok
Destinations (14)
Airline