Seattle to Philadelphia Flight Route Information
| Travel Distance: | 7,700 Miles |
|---|---|
| Airlines Flying This Route: | Alaska Airlines, American Airlines, Cathay Pacific Airways |
| Weekly Flights: | 33 |
| Avg. Flight Duration: | 5.5 Hours |
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10/20/2026 Find Cheap Flights from Seattle to Philadelphia (SEA to PHL)
SEA - Seattle PHL - Philadelphia 
Find Cheap Flights from Seattle to Philadelphia (SEA to PHL)
Fares Starting from $167
SEA - Seattle PHL - Philadelphia Great deal! This is the lowest price we've seen for this one way route in the last 12 hours. Prices may change and aren't guaranteed for all flights or dates. Click on the price to continue your search and check the latest available fare. Ref. id 202609~Ref:9638JJoubkOjA9RpDImhOQ
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Cheap Flights from Seattle to Philadelphia - Compare & Book Our Best Deals
With over 4 daily departures from Seattle to Philadelphia, this route offers great flexibility for different travel plans. Browse one-way fares from $166.99, round-trip fares from $301.66, and other affordable options across different budgets. Compare flight choices, explore schedules, and book the best Seattle to Philadelphia deals that fit your budget and travel preferences.
Top Airlines that fly from Seattle to Philadelphia
Cheap Flight Deals from Seattle to Philadelphia
SEA Seattle Tue, Oct 20
PHL Philadelphia
from $167
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SEA Seattle Fri, Oct 23
PHL Philadelphia
from $176
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SEA Seattle Fri, Oct 16
PHL Philadelphia
from $176
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SEA Seattle Wed, Nov 25
PHL Philadelphia
from $243
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SEA Seattle Thu, Oct 15
PHL Philadelphia
from $245
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SEA Seattle Tue, Oct 27
PHL Philadelphia
from $246
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Fares are one way/round trip. Fares incl. all fuel surcharges, taxes & fees and our service fees. Displayed fares are subject to change and cannot be guaranteed at the time of booking. See all booking terms and conditions. 202609~Ref:9638JJoubkOjA9RpDImhOQ
Insights about cheap flights from Seattle to Philadelphia – Direct Flights, Duration & Best Travel Time
When it comes to booking cheap flights, having the right information at your fingertips can make all the difference. Dive into the insights for cheap flights from Seattle to Philadelphia and enhance your travel experience!
Daily Flights
4
Cheapest Month
April
Avg. Flight Duration
5.5
Peak Season
September
Distance
7,700 miles
Direct Flights
133
When is the Cheapest Time to Book Flights from SEA to PHL?
Explore data-powered insights and trends for flights from Seattle to Philadelphia. Discover average fares, cheap months to fly, when to book, and plan smarter.
What’s the cheapest day of the week to fly from Seattle to Philadelphia?‡
What is the cheapest month to fly from Seattle to Philadelphia?‡
‡This information is based on historical data from the last 365 days.
Finding Affordable Flights from Seattle to Philadelphia
- Plan Ahead - One of the keys to securing cheap flights from Seattle to Philadelphia is to plan your trip well in advance. Airlines often offer lower prices for those who book tickets months ahead. Keep an eye on special promotions and sales events, which can yield significant savings.
- Flexibility is Key - Being flexible with your travel dates can also lead to substantial cost savings. Consider flying during off-peak seasons or on weekdays when prices tend to be lower.
- Set Price Alerts - To keep tabs on flight prices, consider setting up fare alerts. These alerts will notify you when fares from Seattle to Philadelphia drop, giving you the opportunity to grab cheap deals.
- Consider Nearby Airports - If Philadelphia has multiple airports, check the prices at each one. Sometimes, flying into a nearby airport and then taking a short train or bus ride to your destination can be a much cheaper option.
- Bundle and Save - Booking your flight and accommodation together as a package can often result in significant savings. CheapOair offers these bundled deals, so make sure to explore this option.
When should I book flights from SEA to PHL? ‡
‡Got flexible travel dates? Use our flight data from the past year to discover ideal time to fly from Seattle to Philadelphia. Find out which months and days typically offer lower fares and let CheapOair search for the best options.
CheapOair provides the predicted prices for one-way trips or round-trips with a duration of 7 days for domestic and 14 days for international trips based on historical data and available flight information. Graphs are estimates only. Prices are subject to change and can't be guaranteed until ticketed.
Estimated price for
Round-trip
‡Graphs are estimates only. Based on historical data and available flight information. Prices are subject to change and cannot be guaranteed until ticketed.
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Insights About Flying from Seattle to Philadelphia
Which is the high season to travel from Seattle to Philadelphia?
The month of September is considered the high season for flying from SEA to PHL. Traveling during the high season can affect ticket prices and availability, making this data crucial for trip planning.
How many direct flights are available from SEA to PHL?
There are a total of 133 direct flights from Seattle to Philadelphia. For travelers seeking convenience and shorter travel times, this data is important when choosing flight options.
Which is the low season to travel from Seattle to Philadelphia?
April is considered the low season for traveling from Seattle to Philadelphia, Pennsylvania. Travelers looking for cost-effective options and fewer crowds may consider traveling during this period.
How many daily flights are there between Seattle to Philadelphia?
There are as many as 4 daily flights available for travelers between SEA to PHL. This data offers flexibility in choosing departure times that best suit your schedule.
Which is the busiest day for passengers flying between Seattle to Philadelphia?
Monday are the busiest days for passengers flying between Seattle to Philadelphia. Knowing the peak travel day can help you plan your trip to avoid overcrowded flights or airports.
At what time does the last flight depart to Philadelphia?
The last flight to Philadelphia typically departs between 11:00PM - 12:00AM. Travelers who prefer late-night departures will find this information valuable for planning their journey.
What percentage of travelers spent an average of 3 days in Philadelphia, Pennsylvania?
Approximately 47.21% of travelers spent an average of 3 days exploring Philadelphia. This information can assist in planning the duration of your stay in Philadelphia
What percentage of SEA to PHL flyers traveled with kids under 14?
About 11% of passengers on flights from Seattle to Philadelphia were accompanied by children under the age of 14. This information is useful if you're planning a family trip and want to know how common it is to travel with young children on this route.
What percentage of Seattle to Philadelphia travelers were over 60 years old?
A notable 12% of travelers were aged 60 or older. This statistic provides insights for senior travelers or those seeking a mature travel demographic.
What percentage of SEA to PHL travelers were millennials?
Millennials make up a significant portion of travelers on this route, accounting for 47% of all passengers. If you're a millennial looking to connect with like-minded travelers, this statistic might interest you.
What percentage of Seattle to Philadelphia travelers were female?
Almost half of the passengers, approximately 50% were female. Knowing the gender distribution can be useful for solo female travelers or those interested in gender-related travel insights.
At what time the earliest flight departs from Seattle?
The earliest flight departs at 7:00AM - 8:00AM.
On which days one can have the most flight options in Philadelphia?
Monday offer the most flight options in Philadelphia.
§
All flight facts are based on last 3 months' data except the highest and lowest booking months that are based on last 3 months' data.
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Cheap Flights from Seattle to Philadelphia
Looking for flights from Seattle to Philadelphia? Look no more, for you're at the right place. Book cheap flights from Seattle to Philadelphia on CheapOair and enjoy great discounts. Whether its leisure or a business trip, we offer the most competitive rates on flight tickets to destinations around the world. Grab SEA to PHL flight deals on CheapOair and save big!
Airports in Seattle
Seattle is served by Seattle-Tacoma International Airport. The airport is located about 21 kilometers south of Downtown Seattle. Seattle-Tacoma International Airport offers flights to many destinations such as London, New York, Detroit, Portland, San Francisco, and more. Ground transportation options to and from the airport include Seattle's Central Link rail line service, shuttle services, taxis, Limos, and car rentals.
Explore Philadelphia
Located in the US state of Pennsylvania, Philadelphia is the economic and cultural hub of the Delaware valley, situated along the lower Delaware and Schuylkill Rivers. Philadelphia is named after William Penn, who established the city in 1682. The city is home to rich historical legacy and is a standout amongst the most visited cities in the United States. Philadelphia of today is packed with interesting historical centers, famous sports teams, an energetic nightlife, and a flourishing restaurant scene.
Things to do in Philadelphia
Liberty Bell Pavilion
Long been a representation of autonomy in the country, Liberty Bell Pavilion is among the most well-known tourist attractions in the city. This bell went on visit the country over in the late nineteenth century so as to induce a feeling of freedom and to triumph over divisions that were left by the Civil War. In 1915, this bell finished its visit in Philadelphia and it has stayed here from that point forward.
Philadelphia Museum of Art
Featuring one of the biggest art accumulations in the US, Philadelphia Museum of Art is situated in a neoclassical building that is fronted by a wide array of stairs. These stairs became evidently popular after they were used as a part of the well-known 'Rocky' movies. The medieval displays are among the finest segments of the museum including pictures by the Van Eyck siblings and Rogier van der Weyden.
Independence National Historical Park
Arguably the most remarkable square mile of the country, Independence National Historical Park is home to well-known attractions, for example, Independence Hall, Congress Hall, and the Liberty Hall alongside a few other well-liked attractions. Independence Hall is a witness of some of America's most critical historic incidents and facilitated some of the most known leaders.
Best Time to Fly to Philadelphia
Weather-wise, March to May is the best time to visit Philadelphia. During these months, the weather outgrows the cold and it becomes pleasant.
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