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Flights from Seattle to Bangkok

Compare 5 flight options on JAL

* Based on 57 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$809.00
Flight Time18h 50m - 40h 45m
StopsUp to 2 stops

Fares by Cabin Class

Economy$809 ~ $1,853
Premium Eco$2,154 ~ $11,882
Business$6,053 ~ $12,007

Available Route Options

5 different routing options available for this route

Outbound/ReturnFlight TimeStopsEconomyPremium EcoBusiness
OutboundSEA Seattle → HND Haneda → BKK Bangkok
ReturnBKK Bangkok → HND Haneda → SEA Seattle
22h 5m18h 50m
1stop1stop
$809~$2,154~$6,053~
OutboundSEA Seattle → HND Haneda → BKK Bangkok
ReturnBKK Bangkok → NRT Narita → SEA Seattle
22h 5m21h 25m
1stop1stop
$1,358~$2,863~-
OutboundSEA Seattle → HND Haneda → BKK Bangkok
ReturnBKK Bangkok → NRT Narita → SFO San Francisco → SEA Seattle
22h 5m23h 27m
1stop2stop
--$6,817~
OutboundSEA Seattle → SFO San Francisco → HND Haneda → BKK Bangkok
ReturnBKK Bangkok → HND Haneda → SEA Seattle
40h 45m18h 50m
2stop1stop
--$6,096~
OutboundSEA Seattle → SFO San Francisco → HND Haneda → BKK Bangkok
ReturnBKK Bangkok → NRT Narita → SFO San Francisco → SEA Seattle
40h 45m23h 27m
2stop2stop
--$6,353~
Book on Japan Airlines Official Website→
Search real-time Seattle to Bangkok flights on Expedia→

Compare fares with other airlines

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$809 - $1,8535,446 - 9,076307 - 6734,584 - 7,642259 - 567
Premium Eco$2,154 - $11,88214,308 - 19,756166 - 68910,700 - 15,288129 - 533
Business$6,053 - $12,00714,308 - 25,986161 - 38110,700 - 20,400124 - 299
Learn more about JAL Mileage Bank →

Flight Itineraries & Booking Class Details

Browse 5 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 → HNDHaneda → BKKBangkok(22.1h+)BKKBangkok → HNDHaneda → SEASeattle(18.8h+)
15,288 mi
Economy (Booking Class K, K, L, L)
$809 - $1,773
5,446FLY ON Points307-673 FLY ON Points/$100
4,584Miles259-567 Miles/$100
▼
Economy (Booking Class L)
$954
5,446FLY ON Points571 FLY ON Points/$100
4,584Miles481 Miles/$100
▼
Economy (Booking Class V, V, K, K)
$1,324 - $1,844
7,261FLY ON Points394-548 FLY ON Points/$100
6,113Miles332-462 Miles/$100
▼
Economy (Booking Class S)
$1,624
9,076FLY ON Points559 FLY ON Points/$100
7,642Miles471 Miles/$100
▼
Premium Eco (Booking Class N)
$2,154 - $4,604
14,308FLY ON Points311-664 FLY ON Points/$100
10,700Miles232-497 Miles/$100
▼
Premium Eco (Booking Class E)
$2,868 - $4,803
19,756FLY ON Points411-689 FLY ON Points/$100
15,288Miles318-533 Miles/$100
▼
Business (Booking Class P)
$6,053 - $7,203
14,308FLY ON Points199-236 FLY ON Points/$100
10,700Miles149-177 Miles/$100
▼
Business (Booking Class Z, Z, P, P)
$6,554 - $7,214
19,301FLY ON Points268-295 FLY ON Points/$100
14,904Miles207-227 Miles/$100
▼
Business (Booking Class C, C, P, P)
$11,507 - $12,007
19,301FLY ON Points161-168 FLY ON Points/$100
14,904Miles124-130 Miles/$100
▼
Premium Eco (Booking Class G)
$11,872 - $11,873
19,756FLY ON Points166 FLY ON Points/$100
15,288Miles129 Miles/$100
▼
SEASeattle → HNDHaneda → BKKBangkok(22.1h+)BKKBangkok → NRTNarita → SEASeattle(21.4h+)
15,288 mi
Economy (Booking Class V, V, L, L)
$1,358 - $1,853
7,261FLY ON Points392-535 FLY ON Points/$100
6,113Miles330-450 Miles/$100
▼
Premium Eco (Booking Class N, N, E, E)
$2,863 - $3,633
17,032FLY ON Points469-595 FLY ON Points/$100
12,994Miles358-454 Miles/$100
▼
Premium Eco (Booking Class E, E, G, G)
$2,878 - $4,813
19,756FLY ON Points411-686 FLY ON Points/$100
15,288Miles318-531 Miles/$100
▼
Premium Eco (Booking Class G)
$11,882
19,756FLY ON Points166 FLY ON Points/$100
15,288Miles129 Miles/$100
▼
SEASeattle → HNDHaneda → BKKBangkok(22.1h+)BKKBangkok → NRTNarita → SFOSan Francisco → SEASeattle(23.4h+)
16,322 mi
Business (Booking Class Z)
$6,817 - $7,467
25,986FLY ON Points348-381 FLY ON Points/$100
20,400Miles273-299 Miles/$100
▼
SEASeattle → SFOSan Francisco → HNDHaneda → BKKBangkok(40.8h+)BKKBangkok → HNDHaneda → SEASeattle(18.8h+)
16,322 mi
Business (Booking Class P)
$6,096 - $6,756
15,431FLY ON Points228-253 FLY ON Points/$100
11,423Miles169-187 Miles/$100
▼
SEASeattle → SFOSan Francisco → HNDHaneda → BKKBangkok(40.8h+)BKKBangkok → NRTNarita → SFOSan Francisco → SEASeattle(23.4h+)
17,356 mi
Business (Booking Class P, P, P, Z, Z, Z)
$6,353 - $7,005
22,116FLY ON Points316-348 FLY ON Points/$100
16,919Miles242-266 Miles/$100
▼

FAQ

You can earn between 5,446 and 25,986 Premium Points depending on booking class. Economy: 5,446–9,076. Premium Economy: 14,308–19,756. Business: 14,308–25,986.

The lowest fare starts at $809. Economy from $809. Premium Economy from $2,154. Business from $6,053.

Economy class offers better Premium Points per cost. Economy: up to 673.2, Business: up to 381.2.

Yes. All Nippon Airways flights can also be credited to: Status Miles (TK), PQP (UA), Status Points (LH).

The shortest flight time is approximately 22.1h.

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OriginSEASeattleChange
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DestinationBKKBangkok
Destinations (16)
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