Cheap flights from Seattle to Philadelphia

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

The best prices from Seattle to Philadelphia 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 (PHL)

All the information you need to plan the best SEA to PHL flight in 2021: compare Seattle to Philadelphia flight prices with the expected peak season, weather and rainfall in Philadelphia.
SEA - PHL
Price
C$ 357 - C$ 495
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$ 357

From Seattle to Philadelphia

One-way from

C$ 258

One-way flight from Seattle to Philadelphia

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?

Tuesday flights are found to be more expensive to fly from Seattle to Philadelphia. This shouldn’t discourage you from searching, as you can still find great deals by being flexible with your options. Use our search form to find deals on tickets to Philadelphia.

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

To save on the cost of your flight from Seattle to Philadelphia, 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$ 419 if you need a flight within two weeks. For flights within the next 72 hours, you can find tickets from as low as C$ 502.

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

Flights from Seattle to Philadelphia lean towards being more expensive in May. Prices are generally better when you fly from Seattle to Philadelphia in July, with the cheapest ticket starting at C$ 270.

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

A simple way to save on the total cost of your ticket is to fly from Seattle to Philadelphia 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 in May, June 2021

The best prices found for SEA to PHL flights for May, June
26 Jun - 9 Jul
C$ 458pp
SEA
Seattle/Tacoma Intl
Sun Country Air
 
1 STOP
PHL
Philadelphia
PHL
Philadelphia
Sun Country Air
 
1 STOP
SEA
Seattle/Tacoma Intl
1 Jun - 10 Jun
C$ 477pp
SEA
Seattle/Tacoma Intl
JetBlue
 
1 STOP
PHL
Philadelphia
PHL
Philadelphia
JetBlue
 
1 STOP
SEA
Seattle/Tacoma Intl
24 Jun - 27 Jun
C$ 480pp
SEA
Seattle/Tacoma Intl
Alaska Airlines
Direct
PHL
Philadelphia
PHL
Philadelphia
Alaska Airlines
Direct
SEA
Seattle/Tacoma Intl

Seattle to Philadelphia 2021 flight deals

Cheap flights to Philadelphia from Seattle found for this year
3 Aug - 11 Aug
C$ 357pp
SEA
Seattle/Tacoma Intl
Alaska Airlines
Direct
PHL
Philadelphia
PHL
Philadelphia
Alaska Airlines
Direct
SEA
Seattle/Tacoma Intl
7 Sep - 15 Sep
C$ 379pp
SEA
Seattle/Tacoma Intl
Delta
 
1 STOP
PHL
Philadelphia
PHL
Philadelphia
Delta
 
1 STOP
SEA
Seattle/Tacoma Intl
3 Oct - 12 Oct
C$ 381pp
SEA
Seattle/Tacoma Intl
Alaska Airlines
Direct
PHL
Philadelphia
PHL
Philadelphia
Alaska Airlines
Direct
SEA
Seattle/Tacoma Intl

Direct flights to Philadelphia from Seattle

Save time with Seattle to Philadelphia direct flight deals
3 Aug - 11 Aug
C$ 357pp
SEA
Seattle/Tacoma Intl
Alaska Airlines
Direct
PHL
Philadelphia
PHL
Philadelphia
Alaska Airlines
Direct
SEA
Seattle/Tacoma Intl
3 Oct - 12 Oct
C$ 381pp
SEA
Seattle/Tacoma Intl
Alaska Airlines
Direct
PHL
Philadelphia
PHL
Philadelphia
Alaska Airlines
Direct
SEA
Seattle/Tacoma Intl
14 Jul - 21 Jul
C$ 382pp
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

Late deals on round-trip flights to Philadelphia from Seattle, departing today and this week
26 May - 1 Jun
C$ 587pp
SEA
Seattle/Tacoma Intl
JetBlue
 
1 STOP
PHL
Philadelphia
PHL
Philadelphia
JetBlue
 
1 STOP
SEA
Seattle/Tacoma Intl
23 May - 25 May
C$ 599pp
SEA
Seattle/Tacoma Intl
Delta
 
1 STOP
PHL
Philadelphia
PHL
Philadelphia
Delta
 
1 STOP
SEA
Seattle/Tacoma Intl
23 May - 25 May
C$ 714pp
SEA
Seattle/Tacoma Intl
JetBlue
 
1 STOP
PHL
Philadelphia
PHL
Philadelphia
JetBlue
 
1 STOP
SEA
Seattle/Tacoma Intl

One-way flights to Philadelphia from Seattle

The cheapest one-way flights from Seattle to Philadelphia
6:30 p.m. - 7:27 a.m.
JetBlue
1 stop
9h 57m
SEA - PHL
JetBlue
C$ 258
2:00 p.m. - 6:52 a.m.
Sun Country Air
1 stop
13h 52m
SEA - PHL
Sun Country Air
C$ 281
4:10 a.m. - 12:20 p.m.
Alaska Airlines
Direct
5h 10m
SEA - PHL
Alaska Airlines
C$ 432
Alaska Airlines

Related info for your journey

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

Flight FAQs

From Seattle to Philadelphia

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 4h 55m for a nonstop flight. There is 1 flight 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 for under C$ 363 on Cheapflights?

Yes, there are multiple flights from Seattle to Philadelphia for under C$ 363. The cheapest flight booked recently is on Alaska Airlines for just C$ 357, but on average you can expect to pay C$ 420.

Are there direct flights from Seattle to Philadelphia for under C$ 363 on Cheapflights?

Cheapflights has 20 direct flights from Seattle to Philadelphia under C$ 363. A good price for a direct flight from Seattle to Philadelphia is less than C$ 544.

Are there last-minute flights available from Seattle to Philadelphia for under C$ 605?

There are currently 12+ open flights from Seattle to Philadelphia within the next 7 days for less than C$ 605.

What days are direct flights available from Seattle to Philadelphia?

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

Does it rain more in Seattle or Philadelphia?

In Seattle, there will be less rainfall in Seattle compared to Philadelphia over the next 17 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?

Airlines like Alaska Airlines, Delta, and Spirit Airlines fly from Seattle to Philadelphia in about 5h 15m. The time it takes to get you to your destination can typically vary by up to 2h 52m. This flight may include one or multiple stops.

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

Currently priced at C$ 357, Alaska Airlines will fly you from Seattle to Philadelphia and back. In addition to Alaska Airlines, many other airlines offer competitively priced options for your trip. Search Cheapflights for deals from Delta and Spirit Airlines - these airlines can fly you to your destination from C$ 379 and C$ 420, respectively. Alaska Airlines is priced at 11% lower than the current average price of a flight leaving 3 months from now.

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

The cheapest airline one-way is Alaska Airlines, with whom users have recently found tickets for as low as C$ 180. However, be on the lookout for offers from Delta and Sun Country Air, as they are both options that can get you from Seattle to Philadelphia for a low price.

Destination information for Philadelphia

Things to know before you go - useful duration and weather info for your trip from Seattle to Philadelphia.
Flight duration
5h 40m
Average temperature for May in Philadelphia
24.0 °C
Avg rainfall for May in Philadelphia
91.0 mm

Airports servicing Seattle

Airports servicing Philadelphia

Top 3 airlines flying from Seattle to Philadelphia

The chart below displays the airlines Cheapflights users travelling from Seattle to Philadelphia 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

See what time of day planes typically take off from Seattle towards Philadelphia.
Morning 6 AM to noon 100% of flight departures
Early morning Midnight to 6 AM 0% of flight departures
Afternoon Noon to 6 PM 0% of flight departures
Evening 6 PM to midnight 0% of flight departures
Midnight
6 AM
Noon
6 PM
Weekly flight availability
from Seattle to Philadelphia
See how many times per day planes take to the skies headed from Seattle to Philadelphia.
Sunday
1 daily flight
Monday
1 daily flight
Tuesday
1 daily flight
Wednesday
1 daily flight
Thursday
1 daily flight
Friday
1 daily flight
Saturday
1 daily flight
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