Cheap flights from St. Louis to Boston

Lambert-St. Louis
STL
Logan
BOS

Flight deals from St. Louis to Boston

Below you can see the best deals on flights St. Louis — Boston for upcoming dates. Direct and connecting flights from various airlines — compare prices and choose the right ticket.

The lowest price for the next 2 months is on 21 September, from $135.

Top 10 cheap flights from St. Louis to Boston

F9
F9
$ 136

St. Louis — Boston

14:29—12:07
21 Sep 2026
20 h 38 m
1 stop
F9
F9
DL
$ 136

St. Louis — Boston

14:29—08:00
14 Sep 2026
16 h 31 m
2 stops
F9
F9
DL
$ 136

St. Louis — Boston

14:29—11:04
14 Sep 2026
19 h 35 m
2 stops
F9
F9
DL
$ 136

St. Louis — Boston

14:29—15:42
14 Sep 2026
24 h 13 m
2 stops
F9
F9
DL
$ 136

St. Louis — Boston

14:29—15:42
14 Sep 2026
24 h 13 m
2 stops
F9
F9
$ 141

St. Louis — Boston

14:29—12:07
14 Sep 2026
20 h 38 m
1 stop
DL
DL
$ 161

St. Louis — Boston

13:55—19:46
23 Sep 2026
4 h 51 m
1 stop
DL
DL
$ 161

St. Louis — Boston

17:59—23:58
23 Sep 2026
4 h 59 m
1 stop
DL
DL
$ 161

St. Louis — Boston

18:45—01:17
23 Sep 2026
5 h 32 m
1 stop
DL
DL
$ 161

St. Louis — Boston

10:00—18:31
23 Sep 2026
7 h 31 m
1 stop

Prices were found in the last 72 hours and may change — check the exact price when you continue.

About the St. Louis — Boston flight

Looking for cheap flights from St. Louis to Boston? Compare fares from different airlines, check the flight schedule and travel time — and book your St. Louis — Boston ticket online at the best price.

The route has direct flights — around 40 flights per week, flights are operated by American Airlines, Southwest Airlines, Iberia, British Airways, a nonstop flight takes about 2 h 45 min, the distance between the cities is around 1,671 km.

Planning your trip? You may find our Boston travel guide, how to get from the airport into town and Boston weather forecast useful. To catch a low fare, use the low-price calendar and the monthly price chart on this page.

Facts about this route

from $135Min. price
SeptemberCheapest
DecemberPeak season
YesDirect flights
1,671 kmDistance
2 h 45 minTravel time
4Airlines
40 / wkFlights

Flight schedule from St. Louis to Boston

The table shows direct flights from St. Louis to Boston on the selected date. The flight takes approximately 2 h 45 min. Regular flights are operated by American Airlines, Southwest Airlines, Iberia and British Airways. Departures from Lambert-St. Louis International Airport airports, arrivals at Logan International Airport.

For each flight, the following details are shown: departure time (local), arrival city and airport, flight number and airline, terminal or gate, and status. Click on a flight to open its details and go to ticket search. To view flights on a different day, change the date above the table.

Today
Any time
Last update: 25 Aug 2026

Flight ticket prices by day: St. Louis — Boston

Below is a calendar of the lowest flight ticket prices for St. Louis — Boston by day. Pick a convenient date and instantly see the fare. The cheapest flights on this route start from $135 in September, and the most expensive are around $249 in December. If your travel dates are flexible, the calendar will help you find the best price for your preferred period. To view round-trip fares, switch to the "Round trip" tab above the calendar, select your departure date — and the right-hand calendar will highlight the lowest prices for return flights on each day.

 
--
--
--
--
--
--
--
--
--
--
--
--
--
--
--
--
--
--
--
--
--
--
--
--
--
--
--
--
--
--
--
--
--
--
--
--
--
--
--
--
--
--
--
--
--
--
--
--
--
--
--
--
--
--
--
--
--
--
--
--
--
--

Prices by month

Average one-way fares from St. Louis to Boston by month. Tickets are usually cheapest in November (around $236) and priciest in July (about $326) — use the table and chart below to pick the best time to fly.

MonthAverage priceLevelMonthAverage priceLevelMonthAverage priceLevel
Jan$242lowMay$254lowSep$248low
Feb$278mediumJun$314highOct$260medium
Mar$266mediumJul$326highNov$236low
Apr$290highAug$302highDec$284high

Some values are estimated based on seasonality.

When to fly

Weather in Boston: it is warmest in July (up to 28 °C on average) and coolest in January (around 3 °C). The driest month is September.

Tickets are usually cheapest in September and most expensive in December. Compare prices and weather by month in the charts below to pick the best time to fly.

Temperature · Boston

Dry and wet days · Boston

Wind speed and direction · Boston

We'll let you know if you need a visa

Enter your destination or
Your nationality
Destination

How to get the best deal on a St. Louis — Boston ticket

  • Book ahead: fares for St. Louis — Boston are usually lower 3–8 weeks before departure than at the last minute.
  • Play with your dates — Tuesday, Wednesday and Saturday departures are often cheaper than Friday and Sunday.
  • The cheapest month to fly to Boston is usually September — plan your trip around it if your dates are flexible.
  • Compare direct and connecting flights: nonstop is faster, while a connection is sometimes noticeably cheaper.
  • Watch the low-price calendar and the monthly price trend on this page — they make it easier to catch a good date.
  • Travelling light? Pick a cabin-baggage-only fare — tickets without checked luggage are noticeably cheaper.
  • Get to the airport in good time — about 2–3 hours before an international departure and roughly an hour before a domestic one.

Airlines

Flights on the St. Louis — Boston route are operated by 4 airlines; American Airlines runs the most flights (around 65% of all flights). Compare carriers, flight shares and schedules below.

  • American AirlinesAA
    9x/week
    WebsiteFleet: 965211M pax/year
    • Direct flight STL → BOS9x/week
      Duration
      2h 43m
      Days
      MTWTFSS
    65.0%Open →
  • Southwest AirlinesWN
    4x/week
    WebsiteFleet: 817140M pax/year
    • Direct flight STL → BOS4x/week
      Duration
      2h 35m
      Days
      MTWTFSS
    27.5%Open →
  • IberiaIB
    1x/week
    WebsiteFleet: 9224M pax/year
    • Direct flight STL → BOS1x/week
    5.0%Open →
  • British AirwaysBA
    1x/week
    WebsiteFleet: 29243M pax/year
    • Direct flight STL → BOS1x/week
    2.5%Open →

Cities and airports on the St. Louis — Boston route

Flights St. Louis — Boston depart from Lambert-St. Louis International Airport and arrive at Logan International Airport. Below are pages for the cities, countries, and airports on the route: airlines, schedules, and travel guides.

Departure

St. Louis

STL
United States
About the cityHow to get thereWeatherAll about the country United States
Arrival

Boston

BOS
United States
About the cityHow to get thereWeatherAll about the country United States
Departure airports
Arrival airports

Interesting articles about Boston

The World’s Largest CitiesInteresting

The World’s Largest Cities

If you prefer non-stop action to quiet solitude somewhere by the sea or in the mountains—this article is for you. We’ve already told you about the oldest cities in the world, and now it’s time to delv…

Free Public Transport AbroadUseful information

Free Public Transport Abroad

How to get around abroad is always a tricky question. Some simply buy a day pass and spare no expense, while others prefer to walk to avoid spending extra money on “it’s only a ten-minute walk!”. But…

How to run a marathon on vacation?Useful information

How to run a marathon on vacation?

If walking around cities is already a bit boring, run through them. Have you noticed that participating in races has become fashionable lately? It’s a noble and healthy pursuit. And what can compare t…

Graffiti: Where to go for street artInteresting

Graffiti: Where to go for street art

Long gone are the days when graffiti was considered solely vandalism. Today, street art is a powerful and vibrant direction of contemporary art, transforming gray city walls into open-air galleries. A…

Flying across the ocean with Royal Air MarocTravel Ideas

Flying across the ocean with Royal Air Maroc

The Western Hemisphere seems so distant and unattainable until you discover connecting flights with Royal Air Maroc. With this airline, it’s much easier to get to North or South America, see the carni…

10 Beautiful Libraries from Around the WorldInteresting

10 Beautiful Libraries from Around the World

Libraries have long ceased to be mere repositories of dusty tomes. Today, they are grand architectural monuments where history intertwines with modern design, and the silence of the halls inspires new…

Frequently asked questions about the St. Louis — Boston flight

How long is the flight from St. Louis to Boston?

A nonstop St. Louis — Boston flight takes about 2 h 45 min — the distance between the cities is around 1,671 km.

How far is it from St. Louis to Boston?

The distance from St. Louis to Boston is about 1,671 km, which a nonstop flight covers in around 2 h 45 min.

Are there direct flights from St. Louis to Boston?

Yes, there are nonstop flights St. Louis — Boston — around 40 flights per week.

Which airlines fly from St. Louis to Boston?

Airlines operating St. Louis — Boston include American Airlines, Southwest Airlines, Iberia, British Airways. See the full list with schedules in the "Airlines" section on this page.

Which airports do St. Louis — Boston flights use?

Flights from St. Louis depart from Lambert-St. Louis International Airport, and arrive at Logan International Airport. If a city has more than one airport, check which one your ticket uses before you travel.

How much is a ticket from St. Louis to Boston?

The price of a St. Louis — Boston ticket depends on your travel date, season and demand: it is usually cheapest to fly in September, and most expensive in December. Tickets typically cost between $135 and $249. Check the current lowest fare and low-price calendar on this page.

When is the best time to book flights St. Louis — Boston?

Flights St. Louis — Boston are usually cheaper when booked in advance — a few weeks before departure and away from peak dates; the most budget-friendly month to fly is September. Compare prices by month in the price trend chart on this page.

How can I find the cheapest flights from St. Louis to Boston?

To catch a low fare St. Louis — Boston, book a few weeks in advance, keep your dates flexible, and compare airlines and connecting options. The low-price calendar and monthly price chart on this page show the cheapest days and months at a glance: the most budget-friendly month to fly is usually September.

How early should I arrive at the airport?

For international flights, plan to be at the airport about 2–3 hours before departure, and around an hour before a domestic flight. Allow extra time during busy travel seasons and at large hubs, where check-in and security lines can be longer.

Where else you can fly from St. Louis

See all
ChicagoDallasNew York CityAtlantaSeattleMinneapolisTorontoDenverHoustonCharlotteWashington, D.C.DetroitPortlandOrlandoPhoenixPhiladelphiaSalt Lake CityMontrealMiamiLos AngelesLas VegasCancunFort LauderdaleJonesboroSan FranciscoLondonTampaFrankfurt am MainPunta CanaQuincyManhattan

Where else you can fly from Boston

See all
New York CityWashington, D.C.ChicagoTorontoSan FranciscoAtlantaSeattleLos AngelesPhiladelphiaNantucketLondonDallasOrlandoDenverFort LauderdaleDetroitCharlotteRaleighMontrealNashvilleMarthas VineyardMiamiMinneapolisSan DiegoBuffaloPhoenixMadridTampaPittsburghClevelandBarcelonaIndianapolisSan JuanDublinHoustonParisAustinLas VegasRichmondCincinnati

We use cookies and services to collect user information. This is essential for the functioning of the site and for marketing purposes. You can find out more in .