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Cheap flights from Seattle to Philadelphia from C$ 213

This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 26/2. Fares are subject to change and may not be available on all flights or dates of travel.
SEA — PHL
4 Jan — 11 Jan1
1 adult

The best prices from Seattle/Tacoma Intl to Philadelphia are usually found in February or March, booked 38 days in advance, depart on a Saturday or Friday and return on a Monday

Cheap flight deals from Seattle to Philadelphia

Discover tips and strategies to find the most affordable flight options for your journey from Seattle (SEA) to Philadelphia (PHL). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated 30 December 2024.

Round-trip from

C$ 442

One-way from

C$ 213

Popular in

December

Cheapest in

February

Average price

C$ 852
Alaska Airlines
  • Alaska Airlines
  • 21/3-2/4
  • Nonstop
  • 11h 21m total
  • Seattle to Philadelphia
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Delta
  • Delta
  • 26/2
  • 1 total stop
  • 6h 50m total
  • Seattle to Philadelphia
Search Deals
High demand for flights, 7% potential price rise
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Best time to find cheap flights, 3% potential price drop
Search Deals
Average for round-trip flights in December 2024
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Find flight deals from Seattle to Philadelphia

Cheapest flights from Seattle to Philadelphia
Explore the most affordable flight options available from Seattle to Philadelphia. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 30 December 2024.

Mon 30/129:45 p.m.SEA - PHL
Nonstop4h 55mAlaska Airlines
Mon 6/16:32 p.m.PHL - SEA
Nonstop6h 23mAlaska Airlines
Deal found 30/12C$ 1,261

Find flights from Seattle to Philadelphia within your budget

Customize your flight search to find flights from Seattle to Philadelphia that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, Cheapflights users made 629,999 searches. Data last updated 30 December 2024.

Fly from

Any airport

Fly to

Any airport

Route

Depart

Return

Price

SeattlePhiladelphia

SEA - PHL

SEAPHL

Seattle/Tacoma Intl

Fri 21/3

8:30 a.m.-4:41 p.m.

Nonstop5h 11m

Philadelphia

Wed 2/4

5:46 p.m.-8:56 p.m.

Nonstop6h 10m

C$ 442

SeattlePhiladelphia

SEA - PHL

SEAPHL

Seattle/Tacoma Intl

Thu 3/4

1:56 p.m.-5:10 a.m.

1 stop12h 14m

Philadelphia

Sun 6/4

7:45 a.m.-10:46 a.m.

1 stop30h 01m

C$ 452

SeattlePhiladelphia

SEA - PHL

SEAPHL

Seattle/Tacoma Intl

Tue 14/1

12:35 p.m.-11:24 p.m.

1 stop7h 49m

Philadelphia

Wed 15/1

5:10 p.m.-10:53 p.m.

1 stop8h 43m

C$ 455

SeattlePhiladelphia

SEA - PHL

SEAPHL

Seattle/Tacoma Intl

Fri 7/2

5:30 a.m.-5:28 p.m.

1 stop8h 58m

Philadelphia

Sat 8/2

5:15 p.m.-11:00 p.m.

1 stop8h 45m

C$ 469

SeattlePhiladelphia

SEA - PHL

SEAPHL

Seattle/Tacoma Intl

Tue 14/1

7:30 a.m.-9:45 p.m.

2 stops11h 15m

Philadelphia

Sat 25/1

12:45 p.m.-5:30 p.m.

1 stop7h 45m

C$ 490

SeattlePhiladelphia

SEA - PHL

SEAPHL

Seattle/Tacoma Intl

Thu 29/5

11:59 p.m.-11:11 a.m.

1 stop8h 12m

Philadelphia

Mon 2/6

12:10 p.m.-10:45 a.m.

1 stop25h 35m

C$ 511

SeattlePhiladelphia

SEA - PHL

SEAPHL

Seattle/Tacoma Intl

Fri 14/3

6:37 p.m.-7:50 p.m.

3 stops22h 13m

Philadelphia

Mon 24/3

6:45 a.m.-11:10 p.m.

2 stops19h 25m

C$ 906

SeattlePhiladelphia

SEA - PHL

SEAPHL

Seattle/Tacoma Intl

Wed 26/2

1:30 p.m.-11:20 p.m.

1 stop6h 50m

C$ 213

SeattlePhiladelphia

SEA - PHL

SEAPHL

Seattle/Tacoma Intl

Tue 25/2

9:15 a.m.-5:25 p.m.

Nonstop5h 10m

C$ 214

SeattlePhiladelphia

SEA - PHL

SEAPHL

Seattle/Tacoma Intl

Sat 25/1

5:35 a.m.-7:50 p.m.

2 stops11h 15m

C$ 265

Flights are sorted by cheapest round-trip flights first.

Deals found on 30/12

Showing 1-10 of 11 results
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Best time to book a flight from Seattle to Philadelphia

Have a flexible travel schedule? Discover the best time to fly to Philadelphia from Seattle with our price prediction graph.
Estimated round-trip price
Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.

Travel insights for flights from Seattle to Philadelphia

Get recent, data-driven insights about flights from Seattle to Philadelphia including ideal travel times, pricing trends, and more.

How far ahead should I book a flight from Seattle to Philadelphia?

Use this chart to determine the optimal time to book a round-trip flight from Seattle to Philadelphia. Price data was last updated on 27 December 2024.

The best time to book flights from Seattle to Philadelphia is 38 days before your desired departure date. The cost of your flight will likely increase significantly if you book two weeks in advance of your flight.

What is the cheapest month to book a flight from Seattle to Philadelphia?

Currently, January is the cheapest month in which you can book a flight from Seattle to Philadelphia (average of C$ 388). Flying from Seattle to Philadelphia in May is currently the most expensive (average of C$ 450). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

What is the cheapest time of day to fly from SEA to PHL?

Find hourly flight availability from Seattle to Philadelphia. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated 30 December 2024.

One of the essential ways to save on airfare from Seattle to Philadelphia is to remain as flexible as possible. Flights that are in the morning tend to be the most expensive. A flight at noon could potentially save you up to 50% on airfare.

Weekly flight availability from Seattle to Philadelphia

Explore weekly flight availability from Seattle to Philadelphia. Discover flights operating on different days of the week, giving you the flexibility to choose a travel day that best fits your plans. Compare info to find the most convenient option for your journey. Data last updated 30 December 2024.

The most flights from SEA to PHL are scheduled on a Friday (11 on average). You will have fewer flight options on Tuesday, which is when the least amount of flights are scheduled (3 on average).

Rainfall in Philadelphia by month

Plan your trip to Philadelphia by taking into account the average rainfall totals by month.

In terms of precipitation, rainfall in Philadelphia ranges from 69.0 - 112.0 mm per month. July is typically the wettest month, when rainfall can reach 112.0 mm. February is typically the driest time to visit Philadelphia when rainfall is around 69.0 mm.

Temperature in Philadelphia by month

Plan your trip to Philadelphia by taking into account the average temperature totals by month.

If weather is an important factor for your trip to Philadelphia, use this chart to help with planning. For those seeking warmer temperatures, July is the ideal time of year to visit, when temperatures reach an average of 26.0 C. Travellers hoping to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 1.0 C).

Reviews of airlines servicing Philadelphia

Get insights into the airlines that provide service to Philadelphia. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to Philadelphia. Reviews last updated 30 December 2024.
Get a feel of what it's like to fly with Delta, Southwest and Alaska Airlines from Seattle to Philadelphia by reading reviews from past customers. In addition to providing an overall rating, users have also rated airlines in terms of entertainment options, comfort, food, crew/service, and boarding process.
Southwest
8.1
Very good
4,715 reviews
Check prices

Overall

8.1

Entertainment

7.7

Food

7.2

Boarding

8.2

Comfort

8.1

Crew

8.7

Reviews

1 / 10

We BARELY made the connection and when we got onboard we were treated like disobedient children who should have arrived earlier because we had to ask other passengers to move so we could sit with our kids. The flight attendants on the first flight were nice but the second one, they were snippy and fairly rude.

Southwest
8.1
Very good
4,715 reviews
Southwest
8.1
Very good
4,715 reviews
Check prices

Overall

8.1

Entertainment

7.7

Food

7.2

Boarding

8.2

Comfort

8.1

Crew

8.7

Reviews

1 / 10

We BARELY made the connection and when we got onboard we were treated like disobedient children who should have arrived earlier because we had to ask other passengers to move so we could sit with our kids. The flight attendants on the first flight were nice but the second one, they were snippy and fairly rude.

Alaska Airlines
8.0
Very good
9,594 reviews
Southwest
8.1
Very good
4,715 reviews
Check prices

Overall

8.1

Entertainment

7.7

Food

7.2

Boarding

8.2

Comfort

8.1

Crew

8.7

Reviews

1 / 10

We BARELY made the connection and when we got onboard we were treated like disobedient children who should have arrived earlier because we had to ask other passengers to move so we could sit with our kids. The flight attendants on the first flight were nice but the second one, they were snippy and fairly rude.

Delta
8.0
Very good
8,540 reviews
Southwest
8.1
Very good
4,715 reviews
Check prices

Overall

8.1

Entertainment

7.7

Food

7.2

Boarding

8.2

Comfort

8.1

Crew

8.7

Reviews

1 / 10

We BARELY made the connection and when we got onboard we were treated like disobedient children who should have arrived earlier because we had to ask other passengers to move so we could sit with our kids. The flight attendants on the first flight were nice but the second one, they were snippy and fairly rude.

United Airlines
7.4
Good
8,985 reviews
Southwest
8.1
Very good
4,715 reviews
Check prices

Overall

8.1

Entertainment

7.7

Food

7.2

Boarding

8.2

Comfort

8.1

Crew

8.7

Reviews

1 / 10

We BARELY made the connection and when we got onboard we were treated like disobedient children who should have arrived earlier because we had to ask other passengers to move so we could sit with our kids. The flight attendants on the first flight were nice but the second one, they were snippy and fairly rude.

Sun Country Air
7.0
Good
384 reviews
Southwest
8.1
Very good
4,715 reviews
Check prices

Overall

8.1

Entertainment

7.7

Food

7.2

Boarding

8.2

Comfort

8.1

Crew

8.7

Reviews

1 / 10

We BARELY made the connection and when we got onboard we were treated like disobedient children who should have arrived earlier because we had to ask other passengers to move so we could sit with our kids. The flight attendants on the first flight were nice but the second one, they were snippy and fairly rude.

Related info for your journey

Find useful and relevant information for your journey from Seattle to Philadelphia. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • What airports do I use to fly from Seattle to Philadelphia?

    If you book a flight from Seattle to Philadelphia, you will be flying from Seattle/Tacoma Intl to Philadelphia. Flights to Philadelphia (PHL) from Seattle/Tacoma Intl (SEA) take 5h 11m for a nonstop flight. There are 6 flights from Seattle/Tacoma Intl to Philadelphia per day from 2 airlines.

  • How popular is this Seattle to Philadelphia flight route?

    This flight path from Seattle/Tacoma Intl to Philadelphia was viewed by 13 users in the past month. Keep an eye out for changes in search interest prior to high and low season.

  • What are the cheapest airlines flying from Seattle to Philadelphia round-trip?

    Our cheapest airline available from Seattle to Philadelphia is Alaska Airlines. Our recent data shows that you can find tickets from as low as C$ 442 on this airline. Additional options worth looking into are Frontier and United Airlines, starting at C$ 452 and C$ 455 round-trip. Alaska Airlines is currently priced 30% below the average price you’ll pay for this route.

  • What are the cheapest airlines to fly from Seattle to Philadelphia one-way?

    One-way options have recently been found by users for as low as C$ 213 on Delta. Other airlines that offer cheap prices include Alaska Airlines from C$ 214 and United Airlines from C$ 227 one-way.

  • What are the most reliable airlines from Seattle to Philadelphia?

    Before booking your flight to Philadelphia from Seattle, check out the most reliable airlines to get you to your destination on time: Qatar Airways (100%), British Airways (100%), Air Tahiti Nui( 80%).

  • Can I find deals for flights from Seattle to Philadelphia that include hotel bookings?

    Yes. In addition to deals on Seattle to Philadelphia flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from Seattle to Philadelphia?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Seattle to Philadelphia.

  • Can I find deals for business class flights from Seattle to Philadelphia?

    Yes. Cheapflights offers flight deals from Seattle to Philadelphia by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

  • What is the cheapest month to book a flight from Seattle to Philadelphia?

    Currently, January is the cheapest month in which you can book a flight from Seattle to Philadelphia (average of C$ 388). Flying from Seattle to Philadelphia in May is currently the most expensive (average of C$ 450). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

See more FAQs

Browse thousands of different options on Cheapflights for your next trip

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Top 2 airlines flying from Seattle to Philadelphia

Discover the top 2 airlines that operate flights from Seattle to Philadelphia. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 629,999 searches. Data last updated 30 December 2024.
AirlineCheapestAverageFlexibilityOn-time
Alaska AirlinesCheapestC$ 243AverageC$ 482FlexibilityNo cancel feeOn-time75%
Search Alaska Airlines flights
American AirlinesCheapestC$ 335AverageC$ 543FlexibilityNo cancel feeOn-time71%
Search American Airlines flights

Fly with Cheapflights

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How does Cheapflights help users find flights from Seattle to Philadelphia?

Cheapflights helps you search for flights from Seattle to Philadelphia via 900+ travel sites so you don’t have to. After performing a flight search, users can also filter their flight selection by filtering for price, number of stops, airlines, and so on.

Why should you use Cheapflights to find cheap flight tickets from Seattle to Philadelphia?

Cheapflights taps into our reliable network of hundreds of airlines and travel agencies to find the best deals for flights from Seattle to Philadelphia for you. Better yet — we are completely free to use.

Can Cheapflights find flights from Seattle to Philadelphia with no change fees?

Yes, we can. To see specific flights from Seattle to Philadelphia with no change fees, users can toggle flexible booking options after using the search form above to find flights.

Can Cheapflights notify me if prices for flights from Seattle to Philadelphia become cheaper?

Yes! Start tracking prices for Seattle to Philadelphia flights today and get alerted whenever prices for these flights change. To access this feature, click the bell icon next to the flight deals above, which will prompt you for a valid email address to receive your alerts.

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