Fly nonstop from Seattle to London for $411 round-trip on Norwegian.
Seen below, we found seats departing Seattle SEA on Sunday, Febraury 25, returning from London LGW on Sunday, March 4. Other dates are available for travel in February/March.
This price only includes up to 10kg (22 lbs.) of carry-on luggage. Adding a checked bag starts at $45 each way, which would bring the total to $501 round-trip.
Need a room in London? Here's what's available for the above dates on Hotelwatchdog.
Stay on top of breaking airfare deals as we find them! Follow @airfarewatchdog on Twitter.