Flight tickets from St Louis to Boston Logan International

Compare St Louis to Boston Logan International flight deals

Find the cheapest month or even day of the year to fly to Boston Logan International

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Flight deals from St Louis to Boston Logan International

Looking for a cheap last-minute deal or the best return flight from St Louis Airport to Boston Logan International Airport? If you want to travel next month, return fares start from ₹ 18,886. Find the lowest prices on one-way and return tickets right here.

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

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

Direct flights from St Louis to Boston Logan International

St Louis to Boston: Flight information

The things to know before you go.
Cheapest flight found₹ 7,594
Cheapest month to flyMay
Average flight time2 hrs, 40 mins
Most popular airlineSouthwest Airlines
Average flights per week84

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

The best price we found for a return flight from St Louis to Boston Logan International is ₹ 15,174. 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.
2 hours and 40 minutes is the average flight time from St Louis to Boston Logan International.
Southwest Airlines, American Airlines and Envoy Air fly direct from St Louis to Boston Logan International.
As of May 2026, there are 84 flights per week flying from St Louis to Boston Logan International.
The cheapest month to fly from St Louis to Boston Logan International is usually May.
After crunching the numbers on our flight calendar, we found that it's currently cheapest to fly from St Louis Airport to Boston Logan International Airport on Monday, 18 May 2026.
Yes – the average flight time is 2 hours and 40 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 Boston Logan International 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 Boston is around 40 days in advance, so don’t leave your flight to the last minute.
Currently, Frontier Airlines and Southwest Airlines offer the cheapest flight tickets to Boston Logan International.

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

  • Around 2 hours 35 minutes is how long you can expect to be travelling on a direct flight from Lambert-St. Louis International Airport to Logan International Airport.

  • Boston's timezone is UTC-4, making Boston one hour ahead of St Louis.

  • Each week, there are 33 Lambert-St. Louis International Airport to Logan International Airport flights. If you'd like to take off as early as possible, jump on the 07:40 Southwest Airlines flight. If you're eager to make the most of your time before flying, the latest flight is at 21:20 with Southwest Airlines.

  • Get to the airport on time so you don't miss your STL to BOS flight. Be there at least two hours ahead for international flights and an hour early for domestic departures to avoid any last-minute rush.

  • You can expect longer queues during popular months like July. Arriving up to four hours ahead of an international flight and two hours for domestic departures is a good idea.

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

  • Most passengers choose to fly with American Airlines on this route.

  • Southwest Airlines is the most punctual carrier offering STL to BOS flights, with 74.65% of its services arriving as scheduled.

  • Think about adding a stopover when booking your ticket from Lambert-St. Louis International Airport to Logan International Airport. Simply deselect 'Direct flights only' to break up your journey, or enjoy a detour to a new and interesting place. Here's where you can stop between STL and BOS:

    • Detroit Metropolitan Wayne County Airport

    • Cleveland Hopkins International Airport

    • John Glenn Columbus International Airport

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

  • ₹ 7,594 is currently the lowest price for a one-way Lambert-St. Louis International Airport to Logan International Airport flight. A return flight starts at ₹ 15,174. These fares can change depending on availability and demand.

  • Score cheap tickets from STL to BOS by booking at least six months ahead. Based on our research, that's the sweet spot for bagging a bargain.

  • The cheapest month for flights from Lambert-St. Louis International Airport to Logan International Airport is May. Use the 'Whole month' tool to see the lowest airfares if you have flexible dates.

  • Never miss a deal on cheap flights from STL to BOS by creating a Price Alert. We'll send you an email or notification through the app when a lower fare becomes available.

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

Handy information about Lambert-St. Louis International Airport (STL)

Arriving at Logan International Airport (BOS)

Getting from Logan International Airport (BOS) to central Boston

  • BOS is located at One Harborside Drive.

  • Logan International Airport is roughly 5 kilometres from central Boston. The drive time takes about 10 minutes.

  • Travelling by public transport takes about 25 minutes.

When to fly to Logan International Airport (BOS)

  • The quietest month for a flight from Lambert-St. Louis International Airport to Logan International Airport is May, while August is the busiest. Pick the ideal time to visit Boston based on whether you prefer a laid-back vibe or a more bustling atmosphere.

  • Before locking in your flight from Lambert-St. Louis International Airport to Logan International Airport, consider the type of weather you enjoy. July is the warmest month in Boston, with the temperature ranging from 16ºC to 29ºC.

  • If you like cooler conditions, look for a cheap ticket from STL to BOS in January. Temperatures average between -8ºC and 6ºC then.

Explore more of United States

  • New York is just one of the many cities in United States waiting to be explored after you've experienced Boston. Around 306 kilometres away to the south-west, top sights here include Statue of Liberty, Central Park and Empire State Building.

  • Around 434 kilometres south-west of Boston, Philadelphia is another essential stop in United States. Experience the best of this destination with a visit to Liberty Bell, Independence Hall and Philadelphia Museum of Art.

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