Deal Brief
SEA to LHR is currently available as a round-trip redemption for 52,500 points plus $225.93 in taxes. This option prices in Economy through american+alaska, with 3 seats currently showing.
Route: Best Round-Trip Deal: Seattle to London
Route code: SEA -> LHR + LHR -> SEA
Program: American AAdvantage / Alaska Mileage Plan (Mixed)
Airline: Alaska Airlines
Trip style: 21 days
Travel window: NOV-16 to DEC-7
Available dates:
November 2026 (1) cash price unavailable
- NOV-16 to DEC-7
Cash fares are approximate round-trip prices via Travelpayouts. Point value = (cash fare − taxes) ÷ points. american+alaska baseline: 1.3¢/pt.
Additional Deal Information
Data Last Refreshed
Previous Price
New route — no history
Quality Score Breakdown · 75/100
Absolute Cost
28 / 50
Seat Availability
6 / 10
Cabin Tier
0 / 10
Freshness
1 / 1
Destination Tier
8 / 8
Tax Efficiency 25% cash
11 / 18
Airline Product
0 / 7
Additional Flight Information
Outbound · SEA → LHR
Booked via American AAdvantage
Airline: Alaska Airlines
Return · LHR → SEA
Booked via Alaska Mileage Plan
Airline: Alaska Airlines
Mixed booking: This round trip uses two different loyalty programs for the best combined price.
The booking program is where you redeem points. Different programs may price the same flight differently.