Question : What day in the next four weeks has the best fares?
Answer : As of January 23rd, the best day for booking to London (LHR) from Grand Rapids (GRR) is February 1st. Bookings have been made roughly 26% below the average price for this route.
Question : How long do most people stay in London when they fly in from Grand Rapids?
Answer : Of course you're not most people, but if you were, you'd stay roughly eight days.
Question : Is price more important than specific travel days for you?
Answer : The cheapest day to fly in February is Saturday. Flexibility is paramount when booking travel plans in order to keep costs down.
Question : How often are prices changing for this route?
Answer : Prices for GRR to LHR do change a lot more than most routes. However, the sooner you book, the better price you tend to get.