Cheap flights from St Louis to Baltimore

One-way fares from $141 · STL → BWI · prices found by travellers in the last 48 hours

Compare all dates Baltimore → St Louis
Cheapest fare
$141

Frontier Airlines · Fri, Jan 29

Cheapest month
January

from $141

Direct flights
Not recently

Usually 1+ stop

Quickest trip
7h 28m

1,180 km

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Cheapest month to fly from St Louis to Baltimore

Lowest one-way fare per person in each month. Choose a month to see every date.

  1. November 2026 $309
  2. January 2027 Cheapest $141

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About flights from St Louis to Baltimore

St Louis (STL) and Baltimore (BWI) are about 1,180 km apart. We haven't seen direct fares on this route recently, so expect at least one stop; the quickest journey we've seen takes about 7h 28m. Over the next few months, one-way fares start from $141, and January 2027 is currently the cheapest month to fly.

These prices come from searches travellers made in the last 48 hours, so they move quickly. If you see a good fare, it's worth booking soon. FlightsExp is free to use: you book directly with our travel partner.

Frequently asked questions

How much is a flight from St Louis to Baltimore?

The cheapest one-way fare we've seen recently is $141 with Frontier Airlines, departing Friday, January 29, 2027. Over the coming months, the lowest fare in each month ranges from $141 to $309.

What is the cheapest month to fly from St Louis to Baltimore?

January 2027 currently has the lowest fares, from $141 one way.

Are there direct flights from St Louis to Baltimore?

We haven't seen direct fares recently, so most journeys include at least one stop.

How long is the flight from St Louis to Baltimore?

The quickest journey we've seen takes about 7h 28m. St Louis and Baltimore are around 1,180 km apart.

Which airlines fly from St Louis to Baltimore?

Recent fares on this route were with Southern Airways Express and Frontier Airlines.

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