The lowest price advertised for a round-trip flight from Logan Intl. Airport (BOS) to St. Louis Lambert International Airport is S$777. But you better act fast. This figure is taken from fares offered within the last 7 days on Expedia for flights departing within the next year. Prices and availability are subject to change. Additional terms apply.

The majority of flights can be conveniently cancelled online, but whether or not you incur a fee depends on your airline. If you do have to cancel your trip, follow the easy instructions in the 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 Logan Intl. Airport to Lambert-St. Louis Intl. Airport (STL) flights, you’ll see a “no change fees” filter for you to select.

The flight distance between Logan Intl. Airport and Lambert-St. Louis Intl. Airport (STL) is 1,700 kilometres. Listen to your favourite tunes or finish off your latest read and the journey will zip on by.

Southwest Airlines (WN) is one of the preferred choices for many travellers flying between Logan Intl. Airport and STL. Choose from the 78 flights it offers on this route each month. American Airlines (AA) is also worth considering. It operates 56 flights every month. Between these two airlines, you’ll be able to find a great deal from Boston to St. Louis.

Booking your trip from BOS to Lambert Field at the last minute could be your ticket to an awesome deal. However, it could end up costing you a whole lot more! If you’d prefer not to take any chances, book well ahead of your departure date. In fact, Expedia has some of the biggest bargains as far ahead as 12 months in advance. If your preferred air carrier hasn’t released tickets yet, check back frequently as deals are updated all the time on Expedia.