Deal Brief
SEA to LHR is currently available as a round-trip redemption for 176,000 points plus taxes not reported by program. This option prices in First through alaska+british, with 1 seats currently showing.
Route: Best Round-Trip Deal: Seattle to London
Route code: SEA -> LHR + LHR -> SEA
Program: Alaska Mileage Plan / british (Mixed)
Airline: British Airways
Trip style: 12 days
Travel window: MAY-28 to JUN-9
Available dates:
May 2026 (1) cash price unavailable
- MAY-28 to JUN-9
Cash fares are approximate round-trip prices via Travelpayouts. Point value = (cash fare − taxes) ÷ points. alaska+british baseline: 1.3¢/pt.
Additional Deal Information
Data Last Refreshed
Previous Price
New route — no history
Quality Score Breakdown · 84/100
Absolute Cost
35 / 50
Seat Availability
2 / 10
Cabin Tier
10 / 10
Freshness
0 / 1
Destination Tier
8 / 8
Tax Efficiency 37% cash
7 / 18
Airline Product
3 / 7
Additional Flight Information
Outbound · SEA → LHR
Booked via Alaska Mileage Plan
Return · LHR → SEA
Booked via british
Airline: British Airways
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.