Allegiant AirDepart14:15
Thu, Nov 12PIT → STL
4h 53m · 2 stops
$200one way, per person
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- Cheapest fare
- $200
- Cheapest month
- November
- Direct flights
- Not recently
- Quickest trip
- 4h 53m
Allegiant Air · Thu, Nov 12
from $200
Usually 1+ stop
900 km
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Cheapest month to fly from Pittsburgh to St Louis
Lowest one-way fare per person in each month. Choose a month to see every date.
Cheapest dates in November 2026
The lowest fares we've seen for each day, cheapest first.
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About flights from Pittsburgh to St Louis
Pittsburgh (PIT) and St Louis (STL) are about 900 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 4h 53m. Over the next few months, one-way fares start from $200, and November 2026 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 Pittsburgh to St Louis?
The cheapest one-way fare we've seen recently is $200 with Allegiant Air, departing Thursday, November 12, 2026.
What is the cheapest month to fly from Pittsburgh to St Louis?
November 2026 currently has the lowest fares, from $200 one way.
Are there direct flights from Pittsburgh to St Louis?
We haven't seen direct fares recently, so most journeys include at least one stop.
How long is the flight from Pittsburgh to St Louis?
The quickest journey we've seen takes about 4h 53m. Pittsburgh and St Louis are around 900 km apart.
Which airlines fly from Pittsburgh to St Louis?
Recent fares on this route were with Allegiant Air.
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