Route guide
Cheap Flights from Seattle to Philadelphia: Book Airline Tickets
- Distance
- about 2,370 mi
- Typical flight time
- 5 h – 6 h
- Airports
- 1 × 1
- Time difference
- 3 h ahead
This page covers the practical side of flying between Seattle and Philadelphia: which airports to compare, how long the trip takes, and when it is busy. It works for either direction. For a price on your dates, ask a specialist.
Quick answer: Seattle to Philadelphia is about 2,370 miles (3,810 km) and a typical flight takes 5 h to 6 h. Philadelphia is 3 hours ahead of Seattle. Seattle has 1 airport to compare and Philadelphia has 1.
Airport pairs to compare
Seattle's airport is connected to downtown by light rail, which makes arrival simple even at busy times. Philadelphia's airport is a hub with strong connecting traffic, and it is linked to Center City by regional rail.
| Pair | Departure airport | Arrival airport |
|---|---|---|
| SEA to PHL | Seattle-Tacoma International | Philadelphia International |
About the airports
- SEA · Seattle-Tacoma International
Connected to downtown by Link light rail. - PHL · Philadelphia International
A hub airport with regional rail service to Center City.
Airlines with a major base at either end
- At Seattle: Delta Air Lines, Alaska Airlines
- At Philadelphia: American Airlines
Airlines with a base at one end often connect through their hub. A specialist can compare nonstop and connecting options on your dates.
When to go and what to expect
Seattle
July through September is the driest and busiest period. From November to March it is rainy, and fares are often lower.
Philadelphia
Spring and fall are the most comfortable. Summers are hot and humid, and winter storms can disrupt flights.
How long is Seattle to Philadelphia?
At about 2,370 miles, Seattle to Philadelphia is a long domestic-style flight of several hours. Meal options, seat choice and baggage rules matter more on a trip this long, so compare the full total rather than just the base fare.
Time zones and timing
Philadelphia is 3 hours ahead of Seattle, so you land at a local time 3 hours later than departure time plus flight time would suggest. Plan your arrival day around local time at the destination. Check the arrival date on any overnight itinerary, since it can differ from the departure date.
Getting between the airport and town
Seattle: Link light rail runs from the airport to downtown in roughly 40 minutes.
Philadelphia: SEPTA Regional Rail runs from the airport to Center City.
Planning ground transport too? See our car rental guide.
Good to know
- Alaska cruises depart from the city roughly from spring through early fall, which can lift demand and hotel prices at that time.
- Because many passengers connect here, keep extra time between flights, especially in winter.
- Compare the total with bags included, not just the base fare. See baggage fees and taxes and fees.
Flying Philadelphia to Seattle?
This route guide works in both directions. For other trips, see all flights from Seattle or all flights from Philadelphia.
Frequently asked questions
How far is Seattle from Philadelphia?
The straight-line distance between the main airports is about 2,370 miles (3,810 km). Routes can be longer in practice because of air traffic and weather.
How long is a flight from Seattle to Philadelphia?
A typical scheduled flight takes roughly 5 h to 6 h in the air, depending on winds, the aircraft and the airports. Connecting itineraries take longer, and nonstop availability depends on the airline and dates.
Which airports can I use?
At Seattle: SEA (Seattle-Tacoma International). At Philadelphia: PHL (Philadelphia International). Ask for prices on more than one pairing.
Is there a time difference?
Philadelphia is 3 hours ahead of Seattle.
When is the best time to fly from Seattle to Philadelphia?
In Seattle: July through September is the driest and busiest period. From November to March it is rainy, and fares are often lower. In Philadelphia: Spring and fall are the most comfortable. Summers are hot and humid, and winter storms can disrupt flights. Fares are usually highest in the busy periods described for each city, so flexible dates can help.
Which airlines should I compare for Seattle to Philadelphia?
Airlines with a major base at either end include Delta Air Lines, Alaska Airlines and American Airlines. A specialist compares them with other carriers on your dates, since schedules and availability change.
Do you show fares on this page?
No. Fares change constantly, so we do not publish prices that might be out of date. A specialist checks live availability and confirms the full total, including taxes and bags, before you pay.
Route details updated October 18, 2026.