Deal Brief
SEA to LHR is currently available as a round-trip redemption for 158,500 points plus $734.83 in taxes. This option prices in Business through alaska+flyingblue, with 1 seats currently showing.
Route: Best Round-Trip Deal: Seattle to London
Route code: SEA -> LHR + LHR -> SEA
Program: Alaska Mileage Plan / Flying Blue (Mixed)
Airline: Delta Air Lines
Trip style: 8 days
Travel window: APR-7 to APR-15
Available dates:
April 2026 (1) cash price unavailable
- APR-7 to APR-15
Cash fares are approximate round-trip prices via Travelpayouts. Point value = (cash fare − taxes) ÷ points. alaska+flyingblue baseline: 1.3¢/pt.
Additional Deal Information
Data Last Refreshed
Quality Score Breakdown · 73/100
Absolute Cost
35 / 50
Seat Availability
2 / 10
Cabin Tier
8 / 10
Freshness
0 / 1
Destination Tier
8 / 8
Tax Efficiency 26% cash
10 / 18
Airline Product
3 / 7
Additional Flight Information
Outbound · SEA → LHR
Booked via Alaska Mileage Plan
Return · LHR → SEA
Booked via Flying Blue
Airline: Delta Air Lines
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.