Cheap flights from St. Louis to Boston (STL - BOS) from $97

Friday flights are found to be more expensive to fly from St. Louis to Boston. This shouldn’t discourage you from searching, as you can still find great deals by being flexible with your options. Use our search form to find deals on tickets to Boston.

To save on the cost of your flight from St. Louis to Boston, book at least 29 days before your planned departure. Booking around this time can save you about 44% on the cost of this flight compared to booking a flight leaving this week. We have found prices from $450 if you need a flight within two weeks. For flights within the next 72 hours, you can find tickets from as low as $591.

Our data shows that October tends to be the cheapest month to fly to Boston from St. Louis. Users have commonly found prices around $409 for the month, but tickets can be as low as $275. Due to multiple factors, prepare for potentially higher prices in March.

A simple way to save on the total cost of your ticket is to fly from St. Louis to Boston in the evening. If you’re flexible enough to do this you can expect to save up to 9% on your trip compared to booking a flight at noon.

Booking a flight from Lambert-St Louis (STL) to Boston Logan Intl (BOS) is your only option if you wish to fly from St. Louis to Boston. On a typical day, there are 6 flights from Lambert-St Louis to Logan Intl, all of which are around 2h 39m for a nonstop flight. You can also purchase a plane ticket from 6 airlines when you book a flight from Lambert-St Louis to Boston.

Some of our airline partners flying from Lambert-St Louis to Boston Logan Intl have new flexible policies in place due to COVID-19. American Airlines, JetBlue, and Delta are some of the carriers where you may find flexible cancellation policies. You can use our site to filter for airlines like American Airlines with this kind of flexibility.

Yes, there are multiple flights from St. Louis to Boston for under $200. The cheapest flight booked recently is on Frontier for just $185, but on average you can expect to pay $237.

Cheapflights has at least 20 direct flights from St. Louis to Boston under $300. A good price for a nonstop flight from St. Louis to Boston is less than $433.

There are currently 20+ open flights from St. Louis to Boston within the next 7 days for less than $300.

Nonstop flights are available for this route on the following days: Friday, Saturday.

Per day, 3 flights depart from St. Louis to Boston on average.
Morning (6am - Noon) - 67% of flight departures
Evening (6pm - Midnight) - 33% of flight departures

There are many flights that can get you from St. Louis to Boston in 12h 48m. Fly via Frontier, Sun Country Air, or Spirit Airlines to get the fastest option. St. Louis and Boston are separated by a distance of 1049 mi. This flight may include one or multiple stops.

According to our current data, Frontier ($185), Sun Country Air ($255), and Spirit Airlines ($272) offers the cheapest pricing from St. Louis to Boston. Users have found that Frontier is 54% cheaper than the other options available to this destination.

To fly one-way, consider booking your trip with Frontier, which is currently one of the cheapest options available, starting at $97. Spirit Airlines flights start at $117 while deals on Sun Country Air start at $118 one-way.

The most popular airlines flying from St. Louis to Boston are American Airlines, JetBlue and Delta. Something to consider prior to booking your flight.

No one likes to see their flight delayed. When booking a flight from St. Louis to Boston consider choosing Iberia (100%), American Airlines (94%) or Republic Airways (94%) as they are the most reliable in getting you off to your destination on time.

While on average a flight from St. Louis to Boston is generally $2,417, our data shows the cheapest flight currently is $182. When looking at the most popular route, (Lambert-St Louis - Boston Logan Intl), you can expect to pay $236 for that flight.

Lambert-St Louis Airport is STL and Boston Logan Intl Airport is BOS. These codes are created by the International Air Transport Association (IATA) and airlines use them to identify the departing and arrival airports in the flight routes they service.