Cheap Flights from Boston Logan International to St Louis

Compare Boston Logan International to St Louis flight deals

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Flight deals from Boston Logan International to St Louis

Looking for a cheap last-minute deal or the best return flight from Boston Logan International to St Louis? Find the lowest prices on one-way and return tickets right here.

Find the cheapest month to fly from Boston Logan International to St Louis

We’re always keeping an eye on fares, so you can find the best one in seconds. It looks like Boston Logan International to St Louis flights are currently cheapest in May.

Direct flights from Boston Logan International to St Louis

Boston Logan International to St Louis: Alternative routes

Compare routes from Boston Logan International to St Louis below. You may find an airport to fly into that's cheaper, faster, or easier than St Louis.

Boston to St Louis: Flight information

The things to know before you go.
Cheapest flight foundR 1,799
Cheapest month to flyMay
Average flight time3 hrs, 8 mins
Most popular airlineSouthwest Airlines
Average flights per week57

Finding cheap flights from Boston Logan International to St Louis: Frequently asked questions

The best price we found for a return flight from Boston Logan International to St Louis is R 4,477. This is an estimate based on information collected from different airlines and travel providers over the last 4 days and is subject to change and availability.
3 hours and 8 minutes is the average flight time from Boston Logan International to St Louis.
Southwest Airlines, American Airlines and Envoy Air fly direct from Boston Logan International to St Louis.
As of April 2025, there are 57 flights per week flying from Boston Logan International to St Louis.
The cheapest month to fly from Boston Logan International to St Louis is usually April 2025.
After crunching the numbers on our flight calendar, we found that it's currently cheapest to fly from Boston Logan International Airport to St Louis Airport on Wednesday, 23 April 2025.
Yes – the average flight time is 3 hours and 8 minutes.
We show every price from over 1,200 airlines and travel agents, comparing them all so you don’t have to. If you know you want to fly to St Louis but you’re not ready to book, set up a Price Alert. We’ll track prices for you, and let you know when they rise or fall.
We crunched all the numbers in our flight calendar and it looks like the cheapest time to book a flight to St Louis is around 40 days in advance, so don’t leave your flight to the last minute.
Currently, Delta and Southwest Airlines offer the cheapest flight tickets to St Louis.

Travelling from Logan International Airport (BOS) to Lambert-St. Louis International Airport (STL): what you need to know

  • Around 3 hours 5 minutes is how long you can expect to be travelling on a direct flight from Logan International Airport to Lambert-St. Louis International Airport.

  • St Louis's timezone is UTC-5, making St Louis one hour behind Boston.

  • Flights from BOS to STL start from 06:40 — the earliest with Southwest Airlines. The latest departure is at 20:00 with Southwest Airlines. Overall, you can take your pick of 33 weekly Logan International Airport to Lambert-St. Louis International Airport flights.

  • To ensure you catch your BOS to STL flight, allow plenty of time to navigate the airport and find your gate. Arriving two hours ahead of international departures and one hour before domestic flights is the general travel rule.

  • Flying during a peak time such as August? Major public holidays and other popular seasons can lead to longer lines at security. Play it safe and get there up to four hours before an international flight and two hours before domestic departures.

  • Flying into St Louis (and then discovering more of United States!) is a cinch with American Airlines. This popular airline offers direct flights from Logan International Airport to Lambert-St. Louis International Airport.

  • The majority of passengers choose to travel with American Airlines on this route.

  • American Airlines is the most punctual carrier that operates BOS to STL flights. An impressive 83.02% of its departures on this route land on time.

  • If you want to break up your flight, just deselect 'Direct flights only' when searching for your ticket from Logan International Airport to Lambert-St. Louis International Airport. These are the most popular stopovers between BOS and STL:

    • Cleveland Hopkins International Airport

    • Chicago Midway International Airport

    • Ronald Reagan National Airport

How to find the cheapest flights from Logan International Airport (BOS) to Lambert-St. Louis International Airport (STL)

  • Right now, R 1,799 is the lowest price we've found for a one-way Logan International Airport to Lambert-St. Louis International Airport flight. The best price for a return ticket is R 4,477. Keep in mind that fares may change due to availability when booking.

  • To get cheap tickets from BOS to STL, book your journey ten months ahead of your departure date.

  • The cheapest month for flights from Logan International Airport to Lambert-St. Louis International Airport is September. Use the 'Whole month' tool to see the lowest prices if you have a flexible travel schedule.

  • Snapping up cheap flights from BOS to STL is a cinch with Price Alerts. Simply set up one of these automatic alerts and we'll let you know as soon as there's a better deal.

  • Secure the perfect flight for you with the help of the filters. To see the 'Fastest,' 'Best' or 'Cheapest' flights from Logan International Airport to Lambert-St. Louis International Airport, use the 'Sort by' function. You can also filter by departure and arrival times, airline, and journey duration.

Handy information about Logan International Airport (BOS)

  • BOS is located at One Harborside Drive.

  • Of the flights that depart from Logan International Airport, 73.94% arrive as scheduled at their destination.

  • Central Boston to Logan International Airport is around 5 kilometres. Depending on traffic, it'll take about 10 minutes to get there if you're catching a cab, ride-sharing or driving.

  • Taking public transport? You can expect a journey time of around 25 minutes.

  • Need a handy hotel near BOS? If you've booked an early flight from Logan International Airport to Lambert-St. Louis International Airport, these stays will have you moments from check-in:

Arriving at Lambert-St. Louis International Airport (STL)

Getting from Lambert-St. Louis International Airport (STL) to central St Louis

  • STL is located at 10701 Lambert International Blvd..

  • From Lambert-St. Louis International Airport, St Louis is approximately 26 kilometres away. It takes around 20 minutes to reach the centre by car.

  • It typically takes 35 minutes to get there using public transport.

When to fly to Lambert-St. Louis International Airport (STL)

  • The quietest month for a flight from Logan International Airport to Lambert-St. Louis International Airport is April, while July is the most popular. Pick the ideal time to visit St Louis based on whether you prefer a faster pace or a more relaxed vibe.

  • When booking your flight from Logan International Airport to Lambert-St. Louis International Airport, think about the type of weather you enjoy. July is the warmest month in St Louis, with the temperature ranging from 17ºC (63ºF) to 33ºC (91ºF).

  • January has average temperatures of between -8ºC (18ºF) and 7ºC (45ºF). Look for cheap tickets from BOS to STL around that time if you like cooler conditions.

Explore more of United States

  • You've done St Louis, now it's time to discover other corners of United States. Travel around 418 kilometres north-east to Chicago to check off its must-visit sights. From Millennium Park to Art Institute of Chicago and LandShark Beer Garden at Navy Pier, there's plenty to keep you busy.

  • If you're eager to discover another major stop in United States, consider Indianapolis, about 370 kilometres east of St Louis. The Children's Museum of Indianapolis, Indianapolis Museum of Art and Indianapolis Zoo are among its highlights.

Prices shown on this page are estimated lowest prices only. Found in the last 45 days.