Open interactive map →Cheap flights from Seattle to Philadelphia
The Seattle to Philadelphia route shows tracked fares from €297. Philadelphia is in United States. The cheapest tracked fare is non-stop. Compare months in the calendar below as more observations fill in.
SkyHopp's cheapest tracked fare from Seattle to Philadelphia is €297. The cheapest tracked fare is non-stop. The calendar above lists the months with data; more months are needed before naming a cheapest month.
One-way fares
From €297
Cheapest tracked fare (non-stop)
Return fares
From €293
Tracked return fares (out 2 Nov 2026, back 6 Nov 2026)
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Cheapest month to fly
- November 2026€297DirectCheapest
SkyHopp has tracked fares for this route in November at around €297. That is the only month with data so far, so it is too early to name a cheapest month.
Cheapest fare last seen 22 October 2026.
Entry requirements for United States
EU passportESTA required (visa-waiver)
US passportN/A (domestic)
Requirements vary by nationality and change without notice. Check requirements for your nationality →
Alternative routes
Other ways to reach Philadelphia
Frequently asked questions
How much does a flight from Seattle to Philadelphia cost?
The cheapest tracked fare from Seattle to Philadelphia is €297. The month-by-month price calendar on this page lists the months SkyHopp has fares for. A tracked return fare on this pair is currently from €293. Fares are refreshed as our flight partners publish new availability.
Are there direct flights from Seattle to Philadelphia?
Yes - non-stop fares appear in SkyHopp's tracked data from Seattle to Philadelphia. The cheapest tracked fare, from €297, is itself non-stop. Click through to the booking site to check schedules for your dates.
When is the cheapest time to fly from Seattle to Philadelphia?
SkyHopp does not yet have enough months of fares on this route to name a cheapest month. The calendar above lists the months that already have data. Set a price alert on this page to watch the fare.