Flights From Seattle To Philadelphia — from €283
Compare cheap flights from Seattle 🇺🇸 to Philadelphia 🇺🇸. Real prices, daily refreshed from Aviasales.
Live price data temporarily unavailable for this route. Search current fares directly →
Other ways travelers describe this route — we cover all of them on this page:
🏨 Search Hotels in Philadelphia — Compare 100+ booking sites
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🎧 Self-Guided Audio Tours of Philadelphia
🎫 Skip-the-Line Tickets
🚕 Airport Transfer
🛡️ Travel Insurance from $4/day
📱 Get an eSIM (code FALLY20)
✈️ Flight Delayed? Claim up to €600
Seattle → Barcelona Seattle → Madrid Seattle → Malaga Seattle → Valencia Seattle → Seville Seattle → Ibiza Seattle → Mallorca Seattle → Tenerife Seattle → Gran Canaria Seattle → Lanzarote Seattle → Bilbao Seattle → Granada Seattle → Lisbon Seattle → Porto Seattle → Faro Seattle → Madeira Seattle → Rome Seattle → Milan Seattle → Venice Seattle → Florence Seattle → Naples Seattle → Palermo Seattle → Catania Seattle → Bologna Seattle → Bari Seattle → Verona Seattle → Pisa Seattle → Sardinia Seattle → Paris Seattle → Nice
London → Philadelphia Paris → Philadelphia Amsterdam → Philadelphia Brussels → Philadelphia Frankfurt → Philadelphia Munich → Philadelphia Berlin → Philadelphia Hamburg → Philadelphia Zurich → Philadelphia Geneva → Philadelphia Vienna → Philadelphia Dublin → Philadelphia Madrid → Philadelphia Barcelona → Philadelphia Lisbon → Philadelphia Porto → Philadelphia Rome → Philadelphia Milan → Philadelphia Naples → Philadelphia Athens → Philadelphia Copenhagen → Philadelphia Stockholm → Philadelphia Oslo → Philadelphia Helsinki → Philadelphia Reykjavik → Philadelphia Warsaw → Philadelphia Krakow → Philadelphia Prague → Philadelphia Budapest → Philadelphia Bucharest → Philadelphia
Updated 2026-04-14 · Real-time travel data · Affiliate disclosure: this page contains affiliate links — we earn a commission if you book.
The Seattle to Philadelphia flight takes approximately 1–5 hours. Total journey time including check-in and airport transfers adds 2–3 hours. Filter search results by total journey time, not just fare, to find the most efficient routing.
January, february, and november typically offer the lowest fares, often 15–25% below peak-season prices. Shoulder season — April through May and September through October — balances value with excellent travel conditions. Avoid school holiday windows, when demand drives fares sharply higher.
Book 3–5 weeks ahead for the best price and seat availability. Fares typically rise sharply inside 14 days of departure. Searching on Tuesday or Wednesday mornings returns 10–15% lower fares than weekend searches on average.
Yes, nonstop options operate on this route — frequency varies by season.
Set a fare alert for the route and search ±3 days around your target travel dates. Compare fares from nearby airports — a short drive can unlock significantly lower base fares. Self-connecting through a separate booking can beat bundled itinerary prices by 20–30%, though this carries risk if your first segment is delayed.