Cheap flights from Washington to Philadelphia
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Philadelphia, the "City of Brotherly Love", is in fact one of the most ethnically mixed US cities, with substantial communities of Italians, Irish, Eastern Europeans and Asians living side by side among the majority black population. Philadelphia's strength today is its great energy grounded in its many traditional neighborhoods that took on distinct identities, becoming cultural and ethnic enclaves that continue to add color to the city's personality today. Shoppers haggle... (read more in our Philadelphia Travel Guide)
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Cheapest flights found for the next 6 months
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Check our newest flight offers to Philadelphia:
- $292
Spirit Airlines
cheapoair.com check priceFrom To Departure Time Seattle, WA (SEA) Philadelphia, PA (PHL) 06/24/2025 04:58 pm Philadelphia, PA (PHL) Seattle, WA (SEA) 07/02/2025 05:45 am - $295 Spirit Airlines
cheapoair.com check priceFrom To Departure Time Seattle, WA (SEA) Philadelphia, PA (PHL) 07/02/2025 04:58 pm Philadelphia, PA (PHL) Seattle, WA (SEA) 07/09/2025 05:45 am - $417
Sun Country Airlines
cheapoair.com check priceFrom To Departure Time Seattle, WA (SEA) Philadelphia, PA (PHL) 06/24/2025 12:10 pm Philadelphia, PA (PHL) Seattle, WA (SEA) 07/02/2025 12:05 pm - $574
Multiple Airlines
cheapoair.com check priceFrom To Departure Time Seattle, WA (SEA) Philadelphia, PA (PHL) 07/02/2025 11:59 pm Philadelphia, PA (PHL) Seattle, WA (SEA) 07/09/2025 12:37 pm
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