How long does the flight from Boston to St. Louis take?

Flight time from Boston (BOS) to St. Louis (STL) depends on routing, aircraft type, and whether the flight is direct or connecting. A direct flight typically reflects great-circle distance plus winds, while one-stop options can add several hours depending on the layover airport. Check the exact duration in the search results above, where we show block time per itinerary along with stop count.

Which airlines fly from Boston to St. Louis?

Airline availability for BOS to STL changes by season and sometimes week to week as carriers adjust capacity. Our search above pulls live schedules and returns the airlines currently selling this route, both direct and connecting. Codeshare and interline itineraries are included, so you may see results operated by one carrier but sold by another.

Are there direct flights from Boston to St. Louis?

Direct (nonstop) availability on BOS to STL varies by date, day of week, and season. Busy city pairs usually have multiple daily nonstops, while thinner routes may only have direct service a few days per week or only during peak seasons. Use our search above with flexible dates to see which days actually have nonstop options.

What is the cheapest month to fly from Boston to St. Louis?

Prices on BOS to STL shift with seasonality, school holidays, and major events at both ends. Our 12-month price calendar below the search results shows the lowest fare found per departure date, which makes it easy to spot the cheapest weeks at a glance. Flexibility of a few days around your target date often unlocks significantly lower fares.

Boston to St. Louis flights

Direct and connecting flights from Boston (BOS) to St. Louis (STL). Compare airlines, aircraft, and fares.

Distance: 1,681 km (1,045 mi)
Flight time: ~2h 18m
Airlines: 3
Aircraft types: 4

Airlines flying BOS → STL

Airline	Aircraft types	Observations
Southwest Airlines	2	2
American Airlines	1	1
Republic Airlines	1	1

Aircraft on this route

Boeing 737 — 1 operator
Airbus A321 — 1 operator
Boeing 737 — 1 operator
Embraer E170/E175 — 1 operator

Airport details

Departure: General Edward Lawrence Logan International Airport (BOS)

City: Boston
Country: United States
IATA / ICAO: BOS / KBOS

Arrival: St Louis Lambert International Airport (STL)

City: St. Louis
Country: United States
IATA / ICAO: STL / KSTL

Operating airlines

American Airlines (AA)
Southwest Airlines (WN)

Distance: 1684 km. Duration: 188 minutes.

Other routes from Boston

Other routes to St. Louis

Frequently asked questions

How many airlines fly BOS to STL?

3 airlines operate the BOS to STL route in our 90-day observed dataset.

What aircraft fly the BOS-STL route?

The most commonly observed aircraft on BOS to STL include: Boeing 737, Airbus A321, Boeing 737.

How long is the Boston to St. Louis flight?

The estimated flight time from Boston (BOS) to St. Louis (STL) is approximately 2h 18m, based on a cruise speed of 850 km/h.

What's the distance from Boston to St. Louis?

The great-circle distance from Boston (BOS) to St. Louis (STL) is approximately 1,681 km (1,045 miles).

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