Route Price Intelligence
Cheap Flights From Seattle to London
Live pricing benchmarks, monthly patterns, and historical lows for this route.
Typical Price
$889
Deals From
$814
Usually Costs
$814 – $1,012
Lowest We've Seen
$495
Based on 271 price pointshigh confidence
Monthly Price Guide
Jan
$838
Feb
—
Mar
—
Apr
$937
May
$956
Jun
$1,120
Jul
$1,020
Aug
$875
Sep
$814
Oct
$818
Nov
$838
Dec
$946
Cheapest Average Expensive
Best Time to Fly from Seattle to London
The cheapest time to fly from Seattle to London is typically September, when fares average around $814. The most expensive month tends to be June at around $1,120. For the best deals, consider flying in September, October, November.
Cheapest Fare Found (Last 90 Days)
The lowest round-trip price available on each day we checked
Best: $51370 price checksWorst: $772