$120 Find Cheap Flights from Boston to St. Louis - Compare and Save

Yes. STL provides lactation suites for traveling mothers if they want some privacy while they breastfeed or if they need to pump. These lactation suites are outfitted with a comfortable chair, a table, a sink, a bench, a footrest, and an outlet that is appropriately placed for a breast pump. These clean, private suites can be found at Gates C9, E33, and A10.

Yes. The USO at BOS proudly welcomes active-duty service members of the US military and their families. The lounge is located in Terminal C, before security, on the lower level, toward Terminal E. Amenities at this lounge include comfortable seating around a TV with DVDs and Xbox games, a kitchen area, internet access, computers, emergency personal-care kits, reference materials about Boston, and so much more. This USO is open from 8 am until 9 pm Monday thru Friday and from 8 am to 8 pm on Saturday and Sunday.

STL provides travelers and staff alike with two interfaith chapels. The chapels provide prayer books, prayer rugs, and services that include empathetic listening, spiritual guidance, and religious services. Open and available 24/7, one chapel is located on the lower level of Terminal 1 and the other is at Gate E40.

American Airlines, JetBlue, and Southwest are among the airlines that operate direct flights between BOS and STL. American Airlines and Delta are among the airlines that offer flights between BOS and STL that have one-stop. Layover cities include Philadelphia (PHL), Washington DC (DCA), and Charlotte (CLT). United Airlines is one of the carriers that operate flights between STL and BOS that have two stops. Layover cities include Newark (EWR) and Chicago (ORD).

In the last 5 days, the lowest price for a flight from Boston to St. Louis was $91 for a one-way ticket and $339 for a round-trip.

Even though you are not required to have a passport, keep in mind that an official ID is needed to board the airplane.

When flying out of Boston you will be using Boston Logan Intl. You will be landing at St. Louis, also known as Lambert-St Louis.

American Airlines, JetBlue, Delta, Alaska Airlines, and Hawaiian Airlines offer inflight Wi-Fi service on the Boston to St. Louis flight route.

The Embraer 175 is the aircraft model that flies most regularly on the Boston to St. Louis flight route.

SkyTeam, and oneworld are the airline alliances operating flights between Boston and St. Louis, with SkyTeam being the most commonly used for this route.

There are nonstop flights from Boston to St. Louis on a daily basis.

The two airlines most popular with KAYAK users for flights from Boston to St. Louis are Southwest and Delta. With an average price for the route of $500 and an overall rating of 8.0, Southwest is the most popular choice. Delta is also a great choice for the route, with an average price of $555 and an overall rating of 7.8.

KAYAK is a travel search engine. That means we look across the web to find the best prices we can find for our users. With over 2 billion flight queries processed yearly, we are able to display a variety of prices and options on flights from Boston to St. Louis.

KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to St. Louis from Boston is likely to change within 7 days, so travelers know whether to wait or book now.

Hacker Fares allow you to combine one-way tickets in order to save you money over a traditional round-trip ticket. You could then fly to St. Louis with an airline and back to Boston with another airline. Booking your flights between Boston and STL can sometimes prove cheaper using this method.

Sometimes travel dates aren't set in stone. If your preferred travel dates have some wiggle room, flexible dates will show you all the options when flying to St. Louis from Boston up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.