Find the Cheapest Flights from Philadelphia International Airport to United States

Unlock the cheapest flights and the best airfares from Philadelphia International Airport to United States. Make your dream trip both memorable and affordable!

Sun, Jul 5PHL-FLL
Allegiant Air

oneway$34

Thu, Jun 4PHL-TPA
Frontier Airlines

oneway$35

Mon, Jun 29PHL-DSM
Allegiant Air

oneway$39

Sat, May 16PHL-CLE
American Airlines

oneway$75

Tue, Jun 30PHL-ATL
Frontier Airlines

oneway$79

Fri, Jul 3PHL-MIA
Frontier Airlines

oneway$81

Mon, Jun 8PHL-GRR
Allegiant Air

$81

Wed, Jun 3PHL-TPA
Allegiant Air

$81

Thu, Jul 16PHL-HOU
Frontier Airlines

oneway$96

Fri, Jun 19PHL-BOS
JetBlue Airways

oneway$97

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Philadelphia International Airport to United States: Flight information

Cheapest flight found$34

Cheapest month to flyJuly

Most popular airlineAllegiant Air

Average flight duration2h 54m

Cheapest flight found

Jun 2026

$79

Jul 2026

$83

May 2026

$122

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