Cheap flight tickets from St Louis to Boston Logan International

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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 to Boston Logan International? 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 April.

Direct flights from St Louis to Boston Logan International

St Louis to Boston Logan International: Alternative routes

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

St Louis to Boston: Flight information

The things to know before you go.
Cheapest flight foundRM1,026
Cheapest month to flyApril
Average flight time2 hrs, 37 mins
Most popular airlineSouthwest Airlines
Average flights per week77

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 RM1,026. 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 37 minutes is the average flight time from St Louis to Boston Logan International.
Southwest Airlines, American Airlines and Qatar Airways fly direct from St Louis to Boston Logan International.
As of April 2025, there are 77 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 April 2025.
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 Friday, 18 April 2025.
Yes – the average flight time is 2 hours and 37 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

  • The average time for a direct flight from Lambert-St. Louis International Airport to Logan International Airport is 2 hours 33 minutes. Boston's timezone is UTC-4, which makes Boston 1 hour ahead of St Louis.

  • For the earliest departure, jump on the 06:40 flight from Lambert-St. Louis International Airport to Logan International Airport. If you want to set off later, the last flight is at 21:20. With 33 weekly flights from STL to BOS, you can pick the timing that suits you best.

  • If you're flying during a peak month like July, get to the terminal even earlier. It's smart to arrive up to four hours before an international flight and two hours ahead of domestic departures. Check-in and security lines will be longer during peak periods like Thanksgiving, Christmas and New Year.

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

  • We make it a breeze to book a flight with a stopover. To see all the options for flights from Lambert-St. Louis International Airport to Logan International Airport, deselect 'Direct flights only.' Then, pick a flight that has a stop long enough to tour the city of your choice. Popular stopovers between STL and BOS are:

    • Cleveland Hopkins International Airport

    • John Glenn Columbus International Airport

    • Detroit Metropolitan Wayne County Airport

  • You won't need your passport or a visa to fly within United States. You will need a valid proof of identity though, such as a driver's license or ID card. Add them to your packing list once you've found cheap ticket from STL to BOS.

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

  • The lowest price we've seen for a one-way ticket from Lambert-St. Louis International Airport to Logan International Airport is RM421. For a return flight on this route, the best price is RM1,026. Depending on the availability and when you book, these fares could change.

  • To score cheap tickets from STL to BOS, reserve your trip 9 months ahead of the departure date.

  • May is the cheapest month for tickets from Lambert-St. Louis International Airport to Logan International Airport. If you're looking to travel at a different time of year, the 'Whole month' tool will show you the lowest airfares for each month.

  • Snapping up a cheap ticket from STL to BOS is easy with Price Alerts. Simply set up one of these automatic alerts and we'll let you know when the price has fallen.

  • Use filters to find the best journey for you. To see the 'Fastest,' 'Best' or 'Cheapest' flights from Lambert-St. Louis International Airport to Logan International Airport, use the 'Sort by' tool. You can also filter by airline, arrival and departure times, and number of stops.

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

  • The journey from central St Louis to Lambert-St. Louis International Airport takes approximately 36 minutes on public transport. If you ride-share, drive or take a cab, you'll cover the 26 kilometres in 21 minutes or so, depending on traffic.

  • Need a handy hotel close to STL? If you're on an early flight from Lambert-St. Louis International Airport to Logan International Airport, these accommodation options will have you moments from your check-in counter:

Arriving at Logan International Airport (BOS)

Getting from Logan International Airport (BOS) to central Boston

  • Logan International Airport to the centre of Boston takes around 12 minutes in a car. It's approximately 5 kilometres away. See what options are available, such as car rentals, cabs or ride-sharing.

  • It takes roughly 23 minutes when travelling by public transport.

When to fly to Logan International Airport (BOS)

  • August is the busiest month for flights from Lambert-St. Louis International Airport to Logan International Airport. To skip the crowds, visit Boston in May.

  • Book your flight from Lambert-St. Louis International Airport to Logan International Airport for July if you want to explore Boston during its warmest month. Expect temperatures of between 16ºC and 29ºC.

  • January has average temperatures of between -8ºC and 6ºC. Search for cheap tickets from STL to BOS around that time if you want to travel in cooler conditions.

More about Boston

  • Start your Boston trip right by finding a great place to stay. Once you've booked your flight from STL to BOS, check out our range of hotel options including:

  • There are so many things to do and see in this city it can be tricky to work out where to begin. Freedom Trail, Museum of Fine Arts Boston and Boston Tea Party Ships & Museum are major attractions which should feature on every Boston itinerary.

Complete your Boston trip with hotels and a car rental

  • After you've secured your cheap ticket to Logan International Airport, discover our low prices and exclusive rates for hotels. You can also compare hundreds of car rental companies in one place to find the best car rental price for your Boston trip.

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