Cheap flights from Seattle to Philadelphia Intl

Round-trip
Economy
Seattle (SEA)
Philadelphia (PHL)
Depart
Return
Any month
Compare vs. Cheapflights |

The best prices from Seattle to Philadelphia Intl are usually found in August or March, booked 27 days in advance, depart on a Wednesday or Friday and return on a Monday

How to find the cheapest flight from
Seattle (SEA) to Philadelphia Intl (PHL)

All the information you need to plan the best SEA to PHL flight in 2021: compare Seattle to Philadelphia Intl flight prices with the expected peak season, weather and rainfall in Philadelphia Intl.
SEA - PHL
Price
C$ 370 - C$ 514
PHL
Temperature
7 - 31 °C
PHL
Rainfall
60 - 114 mm

Popular in

June

High demand for flights, 19% potential price rise

Cheapest in

August

Best time to find cheap flights, 11% potential price drop

Round-trip from

C$ 370

From Seattle to Philadelphia Intl

One-way from

C$ 406

One-way flight from Seattle to Philadelphia Intl

Flight route prices based on searches on Cheapflights within the last 3 days, monthly prices based on aggregated historical data.
What is the cheapest day to fly round-trip from Seattle to Philadelphia Intl?

Users have found that flying from Seattle to Philadelphia Intl on a Tuesday typically leans towards higher prices. However, this doesn’t mean you still can’t find a deal. Flexibility with other aspects of your flight can still land a great price for your trip.

How far in advance should I book a flight from Seattle to Philadelphia Intl?

To save on the cost of your flight from Seattle to Philadelphia Intl, book at least 54 days before your planned departure. Booking around this time can save you about 30% on the cost of this flight compared to booking a flight leaving this week. We have found prices from C$ 435 if you need a flight within two weeks. For flights within the next 72 hours, you can find tickets from as low as C$ 521.

What is the cheapest month to fly from Seattle to Philadelphia Intl?

Flights from Seattle to Philadelphia Intl lean towards being more expensive in May. Prices are generally better when you fly from Seattle to Philadelphia Intl in July, with the cheapest ticket starting at C$ 280.

When is the cheapest time to fly from Seattle to Philadelphia Intl (SEA - PHL)?

A simple way to save on the total cost of your ticket is to fly from Seattle to Philadelphia Intl at noon. If you’re flexible enough to do this you can expect to save up to 52% on your trip compared to booking a flight in the morning.

Cheap flights from Seattle to Philadelphia Intl in July, August 2021

The best prices found for SEA to PHL flights for July, August
21 Aug - 9 Sep
C$ 283pp
SEA
Seattle/Tacoma Intl
Spirit Airlines
   
2 STOPS
PHL
Philadelphia
PHL
Philadelphia
Spirit Airlines
 
1 STOP
SEA
Seattle/Tacoma Intl
10 Aug - 14 Aug
C$ 393pp
SEA
Seattle/Tacoma Intl
Multiple Airlines
   
2 STOPS
PHL
Philadelphia
PHL
Philadelphia
Spirit Airlines
 
1 STOP
SEA
Seattle/Tacoma Intl
9 Aug - 14 Aug
C$ 406pp
SEA
Seattle/Tacoma Intl
Multiple Airlines
   
2 STOPS
PHL
Philadelphia
PHL
Philadelphia
Spirit Airlines
 
1 STOP
SEA
Seattle/Tacoma Intl

Seattle to Philadelphia Intl 2021 flight deals

Cheap flights to Philadelphia Intl from Seattle found for this year
21 Aug - 9 Sep
C$ 283pp
SEA
Seattle/Tacoma Intl
Spirit Airlines
   
2 STOPS
PHL
Philadelphia
PHL
Philadelphia
Spirit Airlines
 
1 STOP
SEA
Seattle/Tacoma Intl
10 Sep - 13 Sep
C$ 363pp
SEA
Seattle/Tacoma Intl
Spirit Airlines
 
1 STOP
PHL
Philadelphia
PHL
Philadelphia
Spirit Airlines
 
1 STOP
SEA
Seattle/Tacoma Intl
4 Sep - 8 Sep
C$ 370pp
SEA
Seattle/Tacoma Intl
Alaska Airlines
Direct
PHL
Philadelphia
PHL
Philadelphia
Alaska Airlines
Direct
SEA
Seattle/Tacoma Intl

Direct flights to Philadelphia Intl from Seattle

Save time with Seattle to Philadelphia Intl direct flight deals
4 Sep - 8 Sep
C$ 370pp
SEA
Seattle/Tacoma Intl
Alaska Airlines
Direct
PHL
Philadelphia
PHL
Philadelphia
Alaska Airlines
Direct
SEA
Seattle/Tacoma Intl
4 Sep - 5 Sep
C$ 372pp
SEA
Seattle/Tacoma Intl
Alaska Airlines
Direct
PHL
Philadelphia
PHL
Philadelphia
Alaska Airlines
Direct
SEA
Seattle/Tacoma Intl
1 Dec - 5 Dec
C$ 396pp
SEA
Seattle/Tacoma Intl
Alaska Airlines
Direct
PHL
Philadelphia
PHL
Philadelphia
Alaska Airlines
Direct
SEA
Seattle/Tacoma Intl

Last minute flights from Seattle to Philadelphia Intl

Late deals on round-trip flights to Philadelphia Intl from Seattle, departing today and this week
4 Aug - 9 Aug
C$ 566pp
SEA
Seattle/Tacoma Intl
Delta
 
1 STOP
PHL
Philadelphia
PHL
Philadelphia
Delta
 
1 STOP
SEA
Seattle/Tacoma Intl
4 Aug - 18 Aug
C$ 618pp
SEA
Seattle/Tacoma Intl
Delta
 
1 STOP
PHL
Philadelphia
PHL
Philadelphia
Delta
 
1 STOP
SEA
Seattle/Tacoma Intl
1 Aug - 9 Aug
C$ 647pp
SEA
Seattle/Tacoma Intl
Delta
 
1 STOP
PHL
Philadelphia
PHL
Philadelphia
Delta
 
1 STOP
SEA
Seattle/Tacoma Intl

One-way flights to Philadelphia Intl from Seattle

The cheapest one-way flights from Seattle to Philadelphia Intl
5:24 p.m. - 7:34 a.m.
JetBlue
1 stop
11h 10m
SEA - PHL
JetBlue
C$ 406
3:03 a.m. - 7:35 p.m.
United Airlines
2 stops
13h 32m
SEA - PHL
United Airlines
C$ 409
United
6:20 a.m. - 6:49 a.m.
Sun Country Air
1 stop
21h 29m
SEA - PHL
Sun Country Air
C$ 481

Related info for your journey

Useful info, stats and facts about <span class="emphasized">Seattle</span> to <span class="emphasized">Philadelphia Intl</span> flights.

Flight FAQs

From Seattle to Philadelphia Intl

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 09m for a nonstop flight. There are 5 flights from Seattle/Tacoma Intl to Philadelphia per day from 4 airlines.

What safety measures are being taken by airlines flying from Seattle/Tacoma Intl to Philadelphia to control the spread of COVID-19?

Airlines globally have implemented additional safety measures to accommodate you. Alaska Airlines is one of them. New policies for travellers booking flights from Seattle/Tacoma Intl to Philadelphia include masks being provided and required on board, daily cleaning and sanitization, use of HEPA filters, pre-flight testing for antibodies and symptoms, and socially-distanced seating (for a limited time). Keep in mind that policies will vary by airline.

Which airlines flying from Seattle/Tacoma Intl to Philadelphia have flexible cancellations due to COVID-19?

American Airlines, Alaska Airlines, and Spirit Airlines are some of the carriers that may have flexible cancellation policies. You can use our site to filter for other airlines that may also have this kind of flexibility.

Can I find flights from Seattle to Philadelphia Intl for under C$ 377 on Cheapflights?

Yes, there are multiple flights from Seattle to Philadelphia Intl for under C$ 377. The cheapest flight booked recently is on Spirit Airlines for just C$ 283, but on average you can expect to pay C$ 402.

Are there direct flights from Seattle to Philadelphia Intl for under C$ 377 on Cheapflights?

Cheapflights has 20 direct flights from Seattle to Philadelphia Intl under C$ 377. A good price for a direct flight from Seattle to Philadelphia Intl is less than C$ 672.

Are there last-minute flights available from Seattle to Philadelphia Intl for under C$ 628?

There are currently 20+ open flights from Seattle to Philadelphia Intl within the next 7 days for less than C$ 628.

What days are direct flights available from Seattle to Philadelphia?

Days when direct flights are available for this flight are: Tuesday, Wednesday, Thursday.

Does it rain more in Seattle or Philadelphia?

In Seattle, there will be less rainfall in Seattle compared to Philadelphia over the next 9 days.

Is Seattle weather warmer or cooler than Philadelphia?

Expect the weather to be around 31 °C on average in July. As the temperature peaks, try to get your plans done early, as flight price and availability will have an impact on your travels. The climate in Philadelphia is generally hotter than in Seattle.

How long is the flight from Seattle to Philadelphia Intl?

A quick flight from Seattle to Philadelphia Intl can take about 5h 08m. Alaska Airlines provides one of the quickest options available for as low as C$ 370. When browsing for deals, the options you’ll see will be for both direct flights and flights with stops.

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

Spirit Airlines, at C$ 283, was found to be the cheapest airline from Seattle to Philadelphia Intl.Alternate airlines to your destination round-trip include Alaska Airlines and United Airlines. You may be able to fly from Seattle to Philadelphia Intl for 32% less than the average price by searching for these airlines.

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

For one-way options, check prices for Spirit Airlines. According to our data, you can fly for as low as C$ 100. Users have also found prices from C$ 186 and C$ 197 on Spirit Airlines and Alaska Airlines, respectively.

Related searches

Flights to Philadelphia Intl from Seattle
Flights to Seattle Flights to Philadelphia Intl

Rent a Car

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Destination information for Philadelphia Intl

Things to know before you go - useful duration and weather info for your trip from Seattle to Philadelphia Intl.
Flight duration
5h 35m
Average temperature for July in Philadelphia Intl
31.0 °C
Avg rainfall for July in Philadelphia Intl
114.0 mm

Airports servicing Seattle

Airports servicing Philadelphia

Top 3 airlines flying from Seattle to Philadelphia Intl

The chart below displays the airlines Cheapflights users travelling from Seattle to Philadelphia Intl choose most often. Cheapest and average prices are based on aggregated data from the past 12 months.
Airline Cheapest Average Flexibility On-time COVID-19 safety
Spirit Airlines
C$ 111 C$ 260 No cancel fee 65%
Search Spirit Airlines flights
American Airlines
C$ 196 C$ 351 No cancel fee 71%
Search American Airlines flights
Alaska Airlines
C$ 156 C$ 352 No cancel fee 75%
Search Alaska Airlines flights

Hourly flight availability from Seattle to Philadelphia Intl

See what time of day planes typically take off from Seattle towards Philadelphia Intl.
Morning 6 AM to noon 66% of flight departures
Evening 6 PM to midnight 33% of flight departures
Early morning Midnight to 6 AM 1% of flight departures
Afternoon Noon to 6 PM 0% of flight departures
Midnight
6 AM
Noon
6 PM
Weekly flight availability
from Seattle to Philadelphia Intl
See how many times per day planes take to the skies headed from Seattle to Philadelphia Intl.
Sunday
6 daily flights
Monday
6 daily flights
Tuesday
5 daily flights
Wednesday
6 daily flights
Thursday
6 daily flights
Friday
6 daily flights
Saturday
6 daily flights
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