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Cheap Flights from Boston to St Louis

Compare Boston Logan International to St Louis flight deals

Find the cheapest month or even day of the year to fly to St Louis

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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.
St Louis.$163 per passenger.Departing Mon, 9 Dec, returning Tue, 10 Dec.Return flight with Frontier Airlines.Outbound indirect flight with Frontier Airlines, departs from Boston Logan International on Mon, 9 Dec, arriving in St Louis.Inbound indirect flight with Frontier Airlines, departs from St Louis on Tue, 10 Dec, arriving in Boston Logan International.Price includes taxes and charges.From $163, select.
St Louis.$164 per passenger.Departing Tue, 4 Feb, returning Tue, 11 Feb.Return flight with Frontier Airlines.Outbound indirect flight with Frontier Airlines, departs from Boston Logan International on Tue, 4 Feb, arriving in St Louis.Inbound indirect flight with Frontier Airlines, departs from St Louis on Tue, 11 Feb, arriving in Boston Logan International.Price includes taxes and charges.From $164, select.
St Louis.$164 per passenger.Departing Tue, 28 Jan, returning Sat, 1 Feb.Return flight with Frontier Airlines.Outbound indirect flight with Frontier Airlines, departs from Boston Logan International on Tue, 28 Jan, arriving in St Louis.Inbound indirect flight with Frontier Airlines, departs from St Louis on Sat, 1 Feb, arriving in Boston Logan International.Price includes taxes and charges.From $164, select.
St Louis.$164 per passenger.Departing Tue, 7 Jan, returning Tue, 14 Jan.Return flight with Frontier Airlines.Outbound indirect flight with Frontier Airlines, departs from Boston Logan International on Tue, 7 Jan, arriving in St Louis.Inbound indirect flight with Frontier Airlines, departs from St Louis on Tue, 14 Jan, arriving in Boston Logan International.Price includes taxes and charges.From $164, select.
St Louis.$164 per passenger.Departing Sat, 14 Dec, returning Sat, 11 Jan.Return flight with Frontier Airlines.Outbound indirect flight with Frontier Airlines, departs from Boston Logan International on Sat, 14 Dec, arriving in St Louis.Inbound indirect flight with Frontier Airlines, departs from St Louis on Sat, 11 Jan, arriving in Boston Logan International.Price includes taxes and charges.From $164, select.
St Louis.$195 per passenger.Departing Thu, 28 Nov, returning Wed, 4 Dec.Return flight with Frontier Airlines.Outbound indirect flight with Frontier Airlines, departs from Boston Logan International on Thu, 28 Nov, arriving in St Louis.Inbound indirect flight with Frontier Airlines, departs from St Louis on Wed, 4 Dec, arriving in Boston Logan International.Price includes taxes and charges.From $195, select.
St Louis.$205 per passenger.Departing Tue, 19 Nov, returning Sat, 23 Nov.Return flight with Frontier Airlines.Outbound indirect flight with Frontier Airlines, departs from Boston Logan International on Tue, 19 Nov, arriving in St Louis.Inbound indirect flight with Frontier Airlines, departs from St Louis on Sat, 23 Nov, arriving in Boston Logan International.Price includes taxes and charges.From $205, select.
St Louis.$535 per passenger.Departing Thu, 21 Nov, returning Sun, 24 Nov.Return flight with Southwest Airlines.Outbound direct flight with Southwest Airlines departs from Boston Logan International on Thu, 21 Nov, arriving in St Louis.Inbound direct flight with Southwest Airlines departs from St Louis on Sun, 24 Nov, arriving in Boston Logan International.Price includes taxes and charges.From $535, select.

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 December.
Nov
from $205
Dec
from $163
Jan
from $164
Feb
from $164
Mar
from $694
Apr
from $641
May
Find prices
Jun
from $669
Jul
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Aug
from $666
Sep
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Oct
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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 found$163
Cheapest month to flyDecember
Average flight time3 hrs, 11 mins
Most popular airlineSouthwest Airlines
Average flights per week65

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 $163. 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 11 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 November 2024, there are 65 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 November 2024.
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 Monday, 9 December 2024.
Yes – the average flight time is 3 hours and 11 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, Frontier Airlines 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

  • The average time for a direct flight from Logan International Airport to Lambert-St. Louis International Airport is 3 hours 7 minutes. St Louis's timezone is UTC-5, making St Louis 1 hour behind Boston.

  • Each week, there are 33 flights from Logan International Airport to Lambert-St. Louis International Airport. The first flight from BOS to STL is at 06:40 and the last is at 21:20.

  • If you're flying during a peak month like August, be at the airport even earlier. You'll want to arrive up to four hours before an international flight and two hours ahead of a domestic departure. Expect lines to be longer during high seasons like summer, Christmas and New Year.

  • American Airlines offers direct flights from Logan International Airport to Lambert-St. Louis International Airport. Book with this popular airline, then get ready to check out the sights in St Louis — and maybe even more of United States if your schedule allows.

  • We make it a cinch to get a flight with a stopover. To look at the options for flights from Logan International Airport to Lambert-St. Louis International Airport, uncheck 'Direct flights only.' Then, choose a flight with a stop long enough to tour the city of your choice. Some popular stopovers between BOS and STL are:

    • Chicago Midway International Airport

    • Cleveland Hopkins International Airport

    • Detroit Metropolitan Wayne County Airport

  • For a domestic flight within United States, you don't need a passport or visa. However, you'll have to bring another form of identification, such as an ID card or driver's license. Once you've landed your cheap ticket from BOS to STL, make sure your ID is valid before you travel.

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

  • The lowest price we've found for a one-way ticket from Logan International Airport to Lambert-St. Louis International Airport is $90. For a return flight on this route, the best price is $163. Depending on the availability and when you book, these fares may change.

  • Score cheap flight tickets from BOS to STL by booking 1 month ahead. According to our research, that's the sweet spot for picking up a bargain.

  • September is the cheapest month for tickets from Logan International Airport to Lambert-St. Louis International Airport. If you prefer to travel during a different time of year, the 'Whole month' tool will give you the lowest airfares for every month.

  • Sign into your online account or use the app to set up a Price Alert. We'll notify you straight away if there's a cheaper deal on this route. It's simple to do, and it'll save you the hassle of checking for cheap flight tickets from BOS to STL every day.

  • Use filters to tailor your flights from Logan International Airport to Lambert-St. Louis International Airport. Select your ideal departure and arrival times, number of stops and airlines. Or sort your results by 'Cheapest' to find the best deals.

Handy information about Logan International Airport (BOS)

  • Logan International Airport is around 5 kilometres from central Boston. If you're ride-sharing, catching a cab or driving from the centre, it'll take you 12 minutes or so to get there, depending on traffic. If you're taking public transport, expect the trip time to be around 23 minutes.

  • Searching for a handy hotel close to BOS? If you've booked an early flight from Logan International Airport to Lambert-St. Louis International Airport, these stays will put you moments from your departure gate:

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

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

  • Lambert-St. Louis International Airport is approximately 26 kilometres from the centre of St Louis. With your own car rental or if you take a cab, the drive is about 21 minutes.

  • Getting to the centre on public transport takes about 36 minutes.

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

  • It's time to plan your travel dates for your flight from Logan International Airport to Lambert-St. Louis International Airport. July is the most popular month to visit St Louis. If you prefer a quieter vibe, go in April.

  • The warmest month in St Louis is July, with temperatures ranging between 17ºC and 33ºC. Book your flights from Logan International Airport to Lambert-St. Louis International Airport in this month if you like this kind of weather.

  • If you like cooler conditions, search for a cheap ticket from BOS to STL in January. Average temperatures are between -8ºC and 7ºC then.

More about St Louis

  • Start your St Louis trip right by finding the perfect stay. Once you've booked your flight from BOS to STL, browse our selection of accommodation options including:

  • There are so many things to do and see in this city it can be hard to figure out where to begin. The Gateway Arch, Forest Park and St. Louis Zoo are top sights which should be on any good St Louis itinerary.

Complete your St Louis trip with hotels and a car rental

  • Comparing flights is not the only thing we do. Once you've secured your cheap ticket to Lambert-St. Louis International Airport, explore our car rental offers that'll give you the flexibility to see the sights at your own pace. Next, take a look at our exclusive rates for hotels to find the perfect St Louis stay.

Plan the rest of your trip from Boston to St Louis

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