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Cheapest one-way flights from Grand Rapids (GRR) to Philadelphia (PHL), August

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Dates, airline, and price
Dates	Airline	Price
31 Aug	Allegiant Air Direct Flight
28 Aug	Allegiant Air Direct Flight
03 Aug	Allegiant Air Direct Flight
19 Aug	Frontier Airlines
12 Aug	Allegiant Air
25 Aug	Southwest Airlines
18 Aug	Southwest Airlines

deals for return flights from Grand Rapids to Philadelphia in August.

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Updated Jul 21, 2026.

About these fares

These results come from our latest search across airlines for your currency. Prices change quickly and are not locked until you complete booking—always confirm the total and fare rules on the partner site.

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Cheapest one-way flights from Grand Rapids (GRR) to Philadelphia (PHL), August

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