Cheap flights from Grand Rapids to Southern Illinois from CA $149

View CA $149 flight on Sun, Sep. 7, 2025Opens in a new window

Popular airlines from Grand Rapids to Southern Illinois

  • Air Canada

    Air Canada

  • WestJet

    WestJet

  • Flair Airlines

    Flair Airlines

  • American Airlines

    American Airlines

  • United

    United

  • Delta

    Delta

  • Porter Airlines

    Porter Airlines

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Cheap flights from Grand Rapids (GRR) to Southern Illinois (STL)

Prices were available within the past 7 days and start at CA $149 for one-way flights and for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

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