€123 Cheap Flights St. Louis to Boston (STL-BOS)

Round-trip flights from Lambert-St. Louis Intl. Airport (STL) to BOS start from €244. This is based on fares listed within the last 7 days on Expedia for flights departing within the next year — book today so you don’t miss out. Prices and availability are subject to change. Additional terms apply.

Each airline has its own terms and conditions. If you decide to cancel your holiday, head to our Customer Service Portal.

Many airlines offer the option to reschedule your flight without a change fee. All you pay is the difference between the original flight and the new flight. When you’re searching for Lambert-St. Louis Intl. Airport (STL) to BOS flights, you’ll see a “no change fees” filter for you to select.

It’s around 1,700 kilometres between STL and BOS, so expect to be strapped into your seat for a while. Keep yourself occupied by packing things like crossword puzzles or a gripping book.

With 78 flights every month operating from Lambert-St. Louis Intl. Airport (STL) to Logan Intl. Airport, Southwest Airlines (WN) is a popular choice. Another carrier servicing this route is American Airlines (AA). You’ll have 56 flights every month to select from.

Flight prices fluctuate, so it’s no sure thing. While last-minute deals between St. Louis Lambert International Airport and Logan Intl. Airport are possible, it also makes sense to keep a close eye on prices well before you fly. In fact, some air carriers publicize their prices up to a year prior to the departure date. Expedia is constantly updating the biggest airfare bargains around, so keep checking and be ready to book when fare prices drop.