PirateFly is a flight deals platform that tracks 5,000+ European flights daily, scores them on a 0-100 scale, and shows only the best deals plus tools to save on everything around the flight.

How does PirateFly find cheap flights?

PirateFly scans flight prices across hundreds of European routes multiple times per day, compares them to historical data, and calculates a deal score. Only the best deals surface to the top.

Yes, completely free. PirateFly earns a small commission when you book through partner links, at no extra cost to you.

Piratefly: We Found Flights for €9

← Back Home› Deals› United States› St Louis

CHIChicago

✈ →

STLSt Louis

DateSunday20 Sep 2026

Departure15:26→ 18:10

1 stopF926h 44m

Was €122

€84

Book this flight →

↩ Return flights

St Louis → Chicago Wed 23 Sep €53 St Louis → Chicago Tue 29 Sep €54 St Louis → Chicago Wed 30 Sep €54