Question : How many days should you spend in London if you're flying in from Boise?
Answer : The average time spent in London by travelers flying from BOI is 14 days.
Question : Will you do what it takes to get the absolute lowest-cost flight?
Answer : In February, Friday is your cheapest day to fly. Having flexibility in your travel plans means you can save, so be sure to plan ahead when possible.
Question : Are prices changing frequently for this route?
Answer : Flight prices for BOI to LHR change much more than most routes. The further out you book a route, the more likely you are to save.