£126 Cheap Flights from St. Louis (STL) to Boston (BOS)

You can find cheap one-way flights from £126 and cheap return flights £274 STL to BOS with Expedia. One-way flights typically cost between £250 and £613. Flight prices vary based on the month and day of the week you want to travel, as well as the airline and how far in advance you book your ticket. Filter your search on Expedia by "Price (lowest to highest)" to see the cheapest fares first, and use the Price Tracking tool to receive alerts when STL to BOS ticket fares go up or down.

The cheapest months to fly from STL to BOS are typically during off-peak season when demand is low. Traveling in off-peak or shoulder months is usually a good way to secure cheap tickets, just remember to avoid flying during holidays if you are able to. Use the calendar view in your search to see which months have low fares on this route.

There are 2 airlines offering direct flights from St. Louis, MO (STL-Lambert-St. Louis Intl.) to Boston, MA (BOS-Logan Intl.). Here are the carriers:
* Southwest Airlines operates 21 direct flights from St. Louis, MO (STL-Lambert-St. Louis Intl.) to Boston, MA (BOS-Logan Intl.) every week.
* American Airlines operates 17 direct flights from St. Louis, MO (STL-Lambert-St. Louis Intl.) to Boston, MA (BOS-Logan Intl.) every week.

Southwest Airlines is one of the cheapest airlines offering nonstop return flights from St. Louis, MO (STL-Lambert-St. Louis Intl.) to Boston, MA (BOS-Logan Intl.), with tickets starting from around £181 for flights that can be booked for departure within the next year. Spirit Airlines offers one of the cheapest connecting return flights for this route, starting from around £187. These prices are per adult, for economy/coach class. Use Expedia's search tool to compare the prices and schedules of airlines that fly this route to find the best option for your plans and budget.

To find a cheap flight from St. Louis, MO (STL) to Boston, MA (BOS), be flexible with your dates. Traveling outside of peak vacation months and booking a mid-week flight can help you save. Early morning and late night flights are often more affordable, too. Expedia allows you to compare flight times, airlines and routes all in one place to find low fares. You can also set up Price Tracking and receive alerts when fares go up or down.

The best time to fly is usually mid-week (Tuesday or Wednesday) and during early morning hours as flights tend to be cheaper, less crowded, and generally more on-time. Avoid major holidays and peak vacation seasons for smoother travel. Combining off-peak days and hours often gives the best combination of cost, comfort, and convenience.

The earliest flight from St. Louis, MO (STL-Lambert-St. Louis Intl.) to Boston, MA (BOS-Logan Intl.) typically departs around 5:00 AM local time. This service is operated by American Airlines. This is a seasonal service, active only in December. An early departure like this can help you make the most of your time at your destination. To compare early flights on Expedia, select the "Early Morning" and "Morning" filters in your search.

A direct flight from St. Louis, MO (STL-Lambert-St. Louis Intl.) to Boston, MA (BOS-Logan Intl.) typically takes around 2 hours 30 minutes, covering a distance of about 1,680 kilometers. If you opt for a one-stop flight, your journey will be longer, usually taking around 5 hours 18 minutes. Flights with two or more stops will extend your travel time further, to about 9 hours 18 minutes. Keep in mind that actual flight times can vary due to factors like wind patterns and air traffic, so it's always a good idea to allow for some extra time when planning your trip.

Select the "Business class" and "First class" filters when looking for St. Louis, MO (STL) to Boston, MA (BOS) flights on Expedia. This is the easiest way to compare prices, routes and flight times for your trip.

It's easy to earn miles on a St. Louis, MO (STL-Lambert-St. Louis Intl.) to Boston, MA (BOS-Logan Intl.) flight when you book with Expedia. Before you confirm your booking, simply select your frequent flyer program and enter your program number. As a member of One Key™, you can also earn OneKeyCash™* on top of your airline miles when you book with Expedia.

*Excludes taxes and fees. OneKeyCash is not redeemable for cash and can only be used on Expedia and other participating brands.

If you're planning to travel to Boston from Lambert-St. Louis International Airport (STL), you can fly directly into Logan International Airport (BOS) which offers international flights and connections. Some flights may connect through major hubs like Seattle - Tacoma International Airport (SEA), Portland International Airport (PDX), or O'Hare International Airport (ORD) before reaching Boston. Compare routes and airports on Expedia to find the best flight options for your travel plans.

Typically, booking a last minute flight from St. Louis, MO (STL-Lambert-St. Louis Intl.) to Boston, MA (BOS-Logan Intl.) will be more expensive than booking in advance. As the departure date approaches, there are usually fewer seats available which can drive up the cost. However, if there's some wiggle room with your travel dates and times, you could bag a cheap last-minute fare.

Securing a St. Louis, MO (STL-Lambert-St. Louis Intl.) to Boston, MA (BOS-Logan Intl.) flight and hotel package is usually cheaper than booking separately. With Expedia, you can enjoy the ease of organizing your travels all in one place. Select from our extensive range of stays and then add flights, activities and car rentals to your booking. Bundle everything together, and you could save hundreds of dollars.

If you booked your St. Louis, MO (STL) to Boston, MA (BOS) flight within the last 24 hours, you may be able to modify or cancel it without any fees. Depending on the airline and the type of ticket you have, additional charges may apply for changes beyond this timeframe. Airline policies and contact information can be found in your itinerary or confirmation email. Or, head to our Customer Service portal if you'd like more information.