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Flights from LON to Seattle (One-way)

Compare 6 flight options on JAL

* Based on 84 flight price data points (fetched: 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$939.00
Flight Time13h 25m - 25h 25m
Stops1 stop

Fares by Cabin Class

Economy$939 ~ $1,577
Business$2,928 ~ $14,870

Available Route Options

6 different routing options available for this route

Outbound/ReturnFlight TimeStopsEconomyBusiness
OutboundLHR London Heathrow → FRA Frankfurt → SEA Seattle
13h 25m
1stop
$1,047~$2,959~
OutboundLHR London Heathrow → MUC Munich → SEA Seattle
14h 9m
1stop
$939~$2,928~
OutboundLHR London Heathrow → YVR Vancouver → SEA Seattle
15h 17m
1stop
$1,017~-
OutboundLHR London Heathrow → ORD Chicago → SEA Seattle
16h 1m
1stop
$971~$3,115~
OutboundLHR London Heathrow → IAD Washington Dulles → SEA Seattle
16h 31m
1stop
$991~$3,489~
OutboundLCY → FRA Frankfurt → SEA Seattle
25h 25m
1stop
$1,056~$2,968~
Book on Japan Airlines Official Website→
Search real-time LON to Seattle 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$939 - $1,5771,451 - 2,837102 - 2251,451 - 2,837102 - 225
Business$2,928 - $14,8703,841 - 8,97660 - 2143,841 - 8,97660 - 214
Learn more about JAL Mileage Bank →

Flight Itineraries & Booking Class Details

Browse 6 available flight options from LON to Seattle. 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
LHRLondon Heathrow → FRAFrankfurt → SEASeattle(13.4h+)
5,489 mi
Economy (Booking Class L)
$1,047 - $1,376
1,646FLY ON Points120-157 FLY ON Points/$100
1,646Miles120-157 Miles/$100
▼
Economy (Booking Class T)
$1,130 - $1,500
1,646FLY ON Points110-146 FLY ON Points/$100
1,646Miles110-146 Miles/$100
▼
Premium Eco/Economy (Booking Class E)
$2,075 - $2,264
5,489FLY ON Points242-265 FLY ON Points/$100
5,489Miles242-265 Miles/$100
▼
Premium Eco/Economy (Booking Class N)
$2,142 - $2,351
3,841FLY ON Points163-179 FLY ON Points/$100
3,841Miles163-179 Miles/$100
▼
Business (Booking Class P)
$2,959 - $3,485
3,841FLY ON Points110-130 FLY ON Points/$100
3,841Miles110-130 Miles/$100
▼
Premium Eco/Economy (Booking Class G)
$3,157 - $3,345
5,489FLY ON Points164-174 FLY ON Points/$100
5,489Miles164-174 Miles/$100
▼
Business (Booking Class Z)
$3,420 - $3,770
6,860FLY ON Points182-201 FLY ON Points/$100
6,860Miles182-201 Miles/$100
▼
LHRLondon Heathrow → MUCMunich → SEASeattle(14.2h+)
5,843 mi
Economy (Booking Class K)
$939 - $1,277
1,752FLY ON Points137-187 FLY ON Points/$100
1,752Miles137-187 Miles/$100
▼
Economy (Booking Class L)
$1,036 - $1,369
1,752FLY ON Points128-169 FLY ON Points/$100
1,752Miles128-169 Miles/$100
▼
Premium Eco/Economy (Booking Class E)
$2,009 - $2,237
5,843FLY ON Points261-291 FLY ON Points/$100
5,843Miles261-291 Miles/$100
▼
Premium Eco/Economy (Booking Class N)
$2,075 - $2,309
4,089FLY ON Points177-197 FLY ON Points/$100
4,089Miles177-197 Miles/$100
▼
Business (Booking Class P)
$2,928 - $3,443
4,089FLY ON Points119-140 FLY ON Points/$100
4,089Miles119-140 Miles/$100
▼
LHRLondon Heathrow → YVRVancouver → SEASeattle(15.3h+)
4,840 mi
Economy (Booking Class K)
$1,017 - $1,310
1,451FLY ON Points111-143 FLY ON Points/$100
1,451Miles111-143 Miles/$100
▼
Economy (Booking Class L)
$1,058 - $1,383
1,451FLY ON Points105-137 FLY ON Points/$100
1,451Miles105-137 Miles/$100
▼
Economy (Booking Class T)
$1,138 - $1,430
1,451FLY ON Points102-128 FLY ON Points/$100
1,451Miles102-128 Miles/$100
▼
Premium Eco/Economy (Booking Class E)
$2,403 - $2,591
4,840FLY ON Points187-201 FLY ON Points/$100
4,840Miles187-201 Miles/$100
▼
Business/Economy (Booking Class P)
$3,017 - $3,455
3,387FLY ON Points98-112 FLY ON Points/$100
3,387Miles98-112 Miles/$100
▼
Business/Economy (Booking Class Z)
$3,387 - $3,738
6,049FLY ON Points162-179 FLY ON Points/$100
6,049Miles162-179 Miles/$100
▼
Premium Eco/Economy (Booking Class G)
$4,294 - $4,506
4,840FLY ON Points107-113 FLY ON Points/$100
4,840Miles107-113 Miles/$100
▼
LHRLondon Heathrow → ORDChicago → SEASeattle(16.0h+)
5,676 mi
Economy (Booking Class K)
$971 - $1,320
1,701FLY ON Points129-175 FLY ON Points/$100
1,701Miles129-175 Miles/$100
▼
Economy (Booking Class L)
$1,068 - $1,417
1,701FLY ON Points120-159 FLY ON Points/$100
1,701Miles120-159 Miles/$100
▼
Economy (Booking Class T)
$1,172 - $1,464
1,701FLY ON Points116-145 FLY ON Points/$100
1,701Miles116-145 Miles/$100
▼
Economy (Booking Class S)
$1,259 - $1,552
2,837FLY ON Points183-225 FLY ON Points/$100
2,837Miles183-225 Miles/$100
▼
Premium Eco/Economy (Booking Class N)
$2,143 - $2,332
3,973FLY ON Points170-185 FLY ON Points/$100
3,973Miles170-185 Miles/$100
▼
Premium Eco/Economy (Booking Class E)
$2,356 - $2,601
5,676FLY ON Points218-241 FLY ON Points/$100
5,676Miles218-241 Miles/$100
▼
Business (Booking Class P)
$3,115 - $3,465
3,973FLY ON Points115-128 FLY ON Points/$100
3,973Miles115-128 Miles/$100
▼
Business (Booking Class Z)
$3,421 - $3,771
7,094FLY ON Points188-207 FLY ON Points/$100
7,094Miles188-207 Miles/$100
▼
Premium Eco/Economy (Booking Class G)
$4,328 - $4,517
5,676FLY ON Points126-131 FLY ON Points/$100
5,676Miles126-131 Miles/$100
▼
LHRLondon Heathrow → IADWashington Dulles → SEASeattle(16.5h+)
5,984 mi
Economy (Booking Class K)
$991 - $1,350
1,794FLY ON Points133-181 FLY ON Points/$100
1,794Miles133-181 Miles/$100
▼
Economy (Booking Class T)
$1,172 - $1,521
1,794FLY ON Points118-153 FLY ON Points/$100
1,794Miles118-153 Miles/$100
▼
Premium Eco/Economy (Booking Class E)
$2,409 - $2,662
5,984FLY ON Points225-248 FLY ON Points/$100
5,984Miles225-248 Miles/$100
▼
Business (Booking Class Z)
$3,489 - $3,859
7,480FLY ON Points194-214 FLY ON Points/$100
7,480Miles194-214 Miles/$100
▼
Premium Eco/Economy (Booking Class G)
$4,328 - $4,517
5,984FLY ON Points133-138 FLY ON Points/$100
5,984Miles133-138 Miles/$100
▼
Business (Booking Class J)
$14,131 - $14,870
8,976FLY ON Points60-64 FLY ON Points/$100
8,976Miles60-64 Miles/$100
▼
LCY → FRAFrankfurt → SEASeattle(25.4h+)
5,489 mi
Economy (Booking Class L)
$1,056 - $1,349
1,646FLY ON Points122-156 FLY ON Points/$100
1,646Miles122-156 Miles/$100
▼
Economy (Booking Class S)
$1,284 - $1,577
2,744FLY ON Points174-214 FLY ON Points/$100
2,744Miles174-214 Miles/$100
▼
Premium Eco/Economy (Booking Class E)
$2,139 - $2,327
5,489FLY ON Points236-257 FLY ON Points/$100
5,489Miles236-257 Miles/$100
▼
Premium Eco/Economy (Booking Class N)
$2,171 - $2,360
3,841FLY ON Points163-177 FLY ON Points/$100
3,841Miles163-177 Miles/$100
▼
Business (Booking Class P)
$2,968 - $3,493
3,841FLY ON Points110-129 FLY ON Points/$100
3,841Miles110-129 Miles/$100
▼

FAQ

You can earn between 1,451 and 8,976 Status Points depending on booking class. Economy: 1,451–2,837. Business: 3,841–8,976. Business/Economy (Mixed): 3,387–6,049. Premium Economy/Economy (Mixed): 3,841–5,984.

The lowest fare starts at $939. Economy from $939. Business from $2,928. Business/Economy (Mixed) from $3,017. Premium Economy/Economy (Mixed) from $2,009.

Economy class offers better Status Points per cost. Economy: up to 225.3, Business: up to 214.4.

Yes. Lufthansa flights can also be credited to: Premium Points (ANA), Status Miles (TK), PQP (UA), Elite Miles (SQ).

The shortest flight time is approximately 13.4h.

Seattle on other airlines

ANATurkishBritish AirwaysUnitedSingaporeAmericanAlaskaQatarLufthansaCompare All

Other destinations from LON

HelsinkiVancouverLos AngelesAmsterdamManilaBoston
OriginLONLONChange
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DestinationSEASeattle
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