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Flights from LON to Seattle (One-way)

Compare 11 flight options on JAL

* Based on 117 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$1,017.00
Flight Time9h 45m - 16h 35m
StopsNonstop available

Fares by Cabin Class

Economy$1,017 ~ $3,972
Premium Eco$2,211 ~ $2,268
Business$2,831 ~ $12,238
First$12,201 ~ $12,389

Available Route Options

11 different routing options available for this route

Outbound/ReturnFlight TimeStopsEconomyPremium EcoBusinessFirst
OutboundLHR London Heathrow → SEA Seattle
9h 45m
Nonstop
$1,017~$2,211~$2,863~$12,201~
OutboundLHR London Heathrow → DUB Dublin → SEA Seattle
13h 10m
1stop
$1,469~---
OutboundLHR London Heathrow → YVR Vancouver → SEA Seattle
14h 21m
1stop
$1,513~---
OutboundLHR London Heathrow → PDX → SEA Seattle
14h 54m
1stop
$1,279~-$2,873~-
OutboundLHR London Heathrow → SFO San Francisco → SEA Seattle
15h 20m
1stop
$1,793~-$3,266~-
OutboundLHR London Heathrow → ORD Chicago → SEA Seattle
15h 21m
1stop
$1,101~-$2,873~-
OutboundLCY → DUB Dublin → SEA Seattle
16h
1stop
$1,488~-$2,831~-
OutboundLHR London Heathrow → DFW Dallas → SEA Seattle
16h 5m
1stop
$1,205~-$2,873~-

+3 more routing options available

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$1,017 - $3,972922 - 3,24182 - 964,635 - 18,101456 - 456
Premium Eco$2,211 - $2,2681,954 - 1,99788 - 8810,075 - 10,335456
Business$2,831 - $12,2382,574 - 9,86981 - 9612,899 - 55,765456 - 456
First$12,201 - $12,3899,816 - 9,95980 - 8155,597 - 56,454456
Learn more about JAL Mileage Bank →

Flight Itineraries & Booking Class Details

Browse 11 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 → SEASeattle(9.8h+)
4,789 mi
Economy (Booking Class O)
$1,017 - $1,091
922 - 978FLY ON Points90-91 FLY ON Points/$100
4,635 - 4,972Miles456-456 Miles/$100
▼
Economy (Booking Class Q)
$1,057 - $1,188
952 - 1,052FLY ON Points89-90 FLY ON Points/$100
4,817 - 5,414Miles456 Miles/$100
▼
Premium Eco (Booking Class T)
$2,211 - $2,268
1,954 - 1,997FLY ON Points88-88 FLY ON Points/$100
10,075 - 10,335Miles456 Miles/$100
▼
Business (Booking Class I)
$2,863 - $3,125
2,574 - 2,773FLY ON Points89-90 FLY ON Points/$100
13,044 - 14,238Miles456 Miles/$100
▼
First (Booking Class A)
$12,201 - $12,389
9,816 - 9,959FLY ON Points80-81 FLY ON Points/$100
55,597 - 56,454Miles456 Miles/$100
▼
LHRLondon Heathrow → DUBDublin → SEASeattle(13.2h+)
4,814 mi
Economy (Booking Class V)
$1,469
1,340FLY ON Points91 FLY ON Points/$100
6,693Miles456 Miles/$100
▼
Economy (Booking Class L)
$1,671
1,494FLY ON Points89 FLY ON Points/$100
7,614Miles456 Miles/$100
▼
Business/Economy (Booking Class I)
$2,810 - $3,074
2,609 - 2,809FLY ON Points91-93 FLY ON Points/$100
12,805 - 14,008Miles456 Miles/$100
▼
LHRLondon Heathrow → YVRVancouver → SEASeattle(14.3h+)
4,840 mi
Economy (Booking Class V)
$1,513
1,374FLY ON Points91 FLY ON Points/$100
6,895Miles456 Miles/$100
▼
Premium Eco/Economy (Booking Class T)
$2,268
2,072FLY ON Points91 FLY ON Points/$100
10,335Miles456 Miles/$100
▼
Business/Economy (Booking Class I)
$2,863 - $3,125
2,649 - 2,848FLY ON Points91-93 FLY ON Points/$100
13,044 - 14,238Miles456 Miles/$100
▼
Premium Eco/Economy (Booking Class W)
$3,669
3,136FLY ON Points86 FLY ON Points/$100
16,719Miles456 Miles/$100
▼
LHRLondon Heathrow → PDX → SEASeattle(14.9h+)
5,034 mi
Economy (Booking Class N)
$1,279
1,196FLY ON Points94 FLY ON Points/$100
5,829Miles456 Miles/$100
▼
Economy (Booking Class S)
$1,333
1,237FLY ON Points93 FLY ON Points/$100
6,075Miles456 Miles/$100
▼
Premium Eco/Economy (Booking Class T)
$2,221 - $2,278
2,036 - 2,080FLY ON Points91-92 FLY ON Points/$100
10,121 - 10,381Miles456 Miles/$100
▼
Business (Booking Class I)
$2,873 - $3,135
2,756 - 2,955FLY ON Points94-96 FLY ON Points/$100
13,090 - 14,284Miles456 Miles/$100
▼
First/Business (Booking Class A)
$12,211 - $12,399
9,998 - 10,141FLY ON Points82-82 FLY ON Points/$100
55,643 - 56,500Miles456 Miles/$100
▼
LHRLondon Heathrow → SFOSan Francisco → SEASeattle(15.3h+)
6,037 mi
Economy (Booking Class M)
$1,793
1,586FLY ON Points89 FLY ON Points/$100
8,171Miles456 Miles/$100
▼
Business (Booking Class R)
$3,266 - $3,529
3,055 - 3,254FLY ON Points92-94 FLY ON Points/$100
14,881 - 16,079Miles456 Miles/$100
▼
Premium Eco/Economy (Booking Class W)
$3,679
3,144FLY ON Points86 FLY ON Points/$100
16,765Miles456 Miles/$100
▼
First/Business (Booking Class A)
$12,211 - $12,399
9,998 - 10,141FLY ON Points82-82 FLY ON Points/$100
55,643 - 56,500Miles456 Miles/$100
▼
LHRLondon Heathrow → ORDChicago → SEASeattle(15.3h+)
5,676 mi
Economy (Booking Class Q)
$1,101 - $1,175
1,061 - 1,117FLY ON Points95-96 FLY ON Points/$100
5,018 - 5,355Miles456-456 Miles/$100
▼
Economy (Booking Class N)
$1,148 - $1,279
1,097 - 1,196FLY ON Points94-96 FLY ON Points/$100
5,232 - 5,829Miles456 Miles/$100
▼
Economy (Booking Class V)
$1,449 - $1,523
1,325 - 1,381FLY ON Points91-91 FLY ON Points/$100
6,604 - 6,941Miles456-456 Miles/$100
▼
Economy (Booking Class M)
$1,718 - $1,793
1,530 - 1,586FLY ON Points89-89 FLY ON Points/$100
7,830 - 8,171Miles456-456 Miles/$100
▼
Economy (Booking Class K)
$1,853 - $1,927
1,632 - 1,688FLY ON Points88-88 FLY ON Points/$100
8,445 - 8,782Miles456 Miles/$100
▼
Premium Eco/Economy (Booking Class T)
$2,221 - $2,278
2,036 - 2,080FLY ON Points91-92 FLY ON Points/$100
10,121 - 10,381Miles456 Miles/$100
▼
Business (Booking Class I)
$2,873 - $3,135
2,756 - 2,955FLY ON Points94-96 FLY ON Points/$100
13,090 - 14,284Miles456 Miles/$100
▼
First/Business (Booking Class A)
$12,211 - $12,399
9,998 - 10,141FLY ON Points82-82 FLY ON Points/$100
55,643 - 56,500Miles456 Miles/$100
▼
LCY → DUBDublin → SEASeattle(16.0h+)
4,814 mi
Economy (Booking Class V)
$1,488
1,354FLY ON Points91 FLY ON Points/$100
6,778Miles456 Miles/$100
▼
Economy (Booking Class L)
$1,690
1,508FLY ON Points89 FLY ON Points/$100
7,698Miles456 Miles/$100
▼
Business (Booking Class I)
$2,831 - $3,093
2,724 - 2,923FLY ON Points95-96 FLY ON Points/$100
12,899 - 14,093Miles456 Miles/$100
▼
LHRLondon Heathrow → DFWDallas → SEASeattle(16.1h+)
6,410 mi
Economy (Booking Class N)
$1,205 - $1,279
1,140 - 1,196FLY ON Points94-95 FLY ON Points/$100
5,492 - 5,829Miles456-456 Miles/$100
▼
Economy (Booking Class V)
$1,449 - $1,523
1,325 - 1,381FLY ON Points91-91 FLY ON Points/$100
6,604 - 6,941Miles456-456 Miles/$100
▼
Premium Eco/Economy (Booking Class T)
$2,221 - $2,278
2,036 - 2,080FLY ON Points91-92 FLY ON Points/$100
10,121 - 10,381Miles456 Miles/$100
▼
Business (Booking Class I)
$2,873 - $3,135
2,756 - 2,955FLY ON Points94-96 FLY ON Points/$100
13,090 - 14,284Miles456 Miles/$100
▼
Business (Booking Class C)
$12,238
9,869FLY ON Points81 FLY ON Points/$100
55,765Miles456 Miles/$100
▼
First/Business (Booking Class F)
$17,757
14,211FLY ON Points80 FLY ON Points/$100
80,916Miles456 Miles/$100
▼
LHRLondon Heathrow → BOSBoston → SEASeattle(16.3h+)
5,756 mi
Economy (Booking Class V)
$2,580
2,184FLY ON Points85 FLY ON Points/$100
11,758Miles456 Miles/$100
▼
Premium Eco/Economy (Booking Class T)
$3,334
2,882FLY ON Points86 FLY ON Points/$100
15,193Miles456 Miles/$100
▼
Economy (Booking Class B)
$3,972
3,241FLY ON Points82 FLY ON Points/$100
18,101Miles456 Miles/$100
▼
Premium Eco/Economy (Booking Class W)
$5,383
4,438FLY ON Points82 FLY ON Points/$100
24,530Miles456 Miles/$100
▼
LHRLondon Heathrow → LAXLos Angeles → SEASeattle(16.6h+)
6,405 mi
Economy (Booking Class Q)
$1,175
1,117FLY ON Points95 FLY ON Points/$100
5,355Miles456 Miles/$100
▼
Economy (Booking Class N)
$1,222
1,153FLY ON Points94 FLY ON Points/$100
5,570Miles456 Miles/$100
▼
Premium Eco/Economy (Booking Class T)
$2,278
2,080FLY ON Points91 FLY ON Points/$100
10,381Miles456 Miles/$100
▼
Business (Booking Class I)
$2,873
2,756FLY ON Points96 FLY ON Points/$100
13,090Miles456 Miles/$100
▼
Business (Booking Class R)
$3,529
3,254FLY ON Points92 FLY ON Points/$100
16,079Miles456 Miles/$100
▼
Premium Eco/Economy (Booking Class W)
$3,679
3,144FLY ON Points86 FLY ON Points/$100
16,765Miles456 Miles/$100
▼
First/Business (Booking Class A)
$12,211 - $12,399
9,998 - 10,141FLY ON Points82-82 FLY ON Points/$100
55,643 - 56,500Miles456 Miles/$100
▼

FAQ

You can earn between 922 and 14,211 Tier Points depending on booking class. Economy: 922–3,241. Premium Economy: 1,954–1,997. Business: 2,574–9,869. First: 9,816–9,959. Business/Economy (Mixed): 2,609–2,848. First/Business (Mixed): 9,998–14,211. Premium Economy/Economy (Mixed): 2,036–4,438.

The lowest fare starts at $1,017. Economy from $1,017. Premium Economy from $2,211. Business from $2,831. First from $12,201. Business/Economy (Mixed) from $2,810. First/Business (Mixed) from $12,211. Premium Economy/Economy (Mixed) from $2,221.

Economy class offers better Tier Points per cost. Economy: up to 96.4, Business: up to 96.2.

Yes. British Airways flights can also be credited to: FLY ON Points (JAL).

The shortest flight time is approximately 9.8h.

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