Question : How long do most people visit London?
Answer : Of course you're not most people, but if you were, you'd stay roughly 19 days.
Question : Should you take that vacation to London in the next 30 days?
Answer : Since low prices are preferred, look at Apr 4th. As of Mar 27th, it's showing the cheapest ticket sales at $751. That is 23% below the average price for this route, so you can spend that extra money on a fun experience in London.
Question : Is the price you found a good deal?
Answer : Ranging from $745 to $1,556, prices for SEA to LCY fluctuate less than the majority of routes from the United States. The further out you book a route, the more likely you are to save.
Question : Would you be willing to change your travel days if it saved you money?
Answer : Tuesday is your lowest-cost day to fly in April. Having flexibility in your travel plans means you can save more, so be sure to plan ahead when possible.