Question : What day in the next four weeks has the best fares?
Answer : Since low prices are preferred, look at Jun 7th. As of May 22nd, it's showing the cheapest ticket sales at $1,393. That is 30% below the average price for this route, so you can spend that extra money on an adventure in London.
Question : What price range should you expect when booking from Springfield (SGF) to London (LGW)?
Answer : Prices for this trip tend to fluctuate more than other flights from the United States. They can range from $1,088 to $2,382. However, the sooner you book, the more you'll be able to save.
Question : How long do most people visit London?
Answer : Of course you're not most people, but if you were, you'd stay roughly 10 days.
Question : Can you cut down on flight costs by changing the day of the week you travel to London?
Answer : For the month of June, the cheapest day to fly is Wednesday. Being flexible with your travel days garners even more savings during booking.