Cheap flights from Seattle to Philadelphia (SEA - PHL)

SEA — PHL
Dec 10 — Dec 171

The best prices from Seattle/Tacoma Intl to Philadelphia are usually found in February or January, booked 60 days in advance, depart on a Tuesday or Wednesday and return on a Tuesday

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 2022: compare Seattle to Philadelphia flight prices with the expected peak season, weather and rainfall in Philadelphia.

SEA - PHL

Price

$297 - $717

PHL

Temperature

33.8 - 78.8 °F

PHL

Rainfall

2.7 - 4.4 inches

Popular inJulyHigh demand for flights, 32% potential price rise
Cheapest inFebruaryBest time to find cheap flights, 39% potential price drop
Round-trip from$297From Seattle/Tacoma Intl to Philadelphia
One-way from$114One-way flight from Seattle/Tacoma Intl to Philadelphia

What is the cheapest day to fly round-trip from Seattle to Philadelphia?

Leaving on a Monday is a viable option for saving on travel. Heavily demanded days of the week can typically drive up the prices you see. Booking your travel for a less competitive day can save up to 25% on the overall cost on flights from Seattle 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 61 days before your planned departure. Booking around this time can save you about 45% on the cost of this flight compared to booking a flight leaving this week. We have found prices from $626 if you need a flight within two weeks. For flights within the next 72 hours, you can find tickets from as low as $710.

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

February is one of the best times of the year to fly to Philadelphia from Seattle. Prices for February average $487 per person but you can even find prices for as low as $227. The most expensive prices can be found in the month of July. Opting for a February flight can save you 47% on your journey compared to booking in July

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 in the afternoon. If you’re flexible enough to do this you can expect to save up to 61% on your trip compared to booking a flight at noon.

Cheap flights from Seattle to Philadelphia in December, January 2022

The best prices found for SEA to PHL flights for December, January
Dec 10 - Dec 13
SEA

Seattle/Tacoma Intl

PHL

Philadelphia

1 stop

8h 22m
PHL

Philadelphia

SEA

Seattle/Tacoma Intl

1 stop

17h 30m
$164

Frontier

Pick Dates

Deal found 12/3

Jan 20 - Jan 26
SEA

Seattle/Tacoma Intl

PHL

Philadelphia

1 stop

8h 27m
PHL

Philadelphia

SEA

Seattle/Tacoma Intl

1 stop

14h 47m
$165

Frontier

Pick Dates

Deal found 12/2

Dec 10 - Feb 28
SEA

Seattle/Tacoma Intl

PHL

Philadelphia

1 stop

8h 22m
PHL

Philadelphia

SEA

Seattle/Tacoma Intl

1 stop

23h 32m
$167

Frontier

Pick Dates

Deal found 12/3

Seattle to Philadelphia 2022 flight deals

Cheap flights to Philadelphia from Seattle found for this year
Dec 10 - Dec 13
SEA

Seattle/Tacoma Intl

PHL

Philadelphia

1 stop

8h 22m
PHL

Philadelphia

SEA

Seattle/Tacoma Intl

1 stop

17h 30m
$164

Frontier

Pick Dates

Deal found 12/3

Dec 9 - Dec 11
SEA

Seattle/Tacoma Intl

PHL

Philadelphia

1 stop

8h 28m
PHL

Philadelphia

SEA

Seattle/Tacoma Intl

1 stop

17h 36m
$165

Frontier

Pick Dates

Deal found 12/4

Dec 10 - Feb 28
SEA

Seattle/Tacoma Intl

PHL

Philadelphia

1 stop

8h 22m
PHL

Philadelphia

SEA

Seattle/Tacoma Intl

1 stop

23h 32m
$167

Frontier

Pick Dates

Deal found 12/3

Cheap Frontier flights from Seattle to Philadelphia

Mar 14 - Mar 21
SEA

Seattle/Tacoma Intl

PHL

Philadelphia

1 stop

7h 27m
PHL

Philadelphia

SEA

Seattle/Tacoma Intl

1 stop

15h 41m
$163

Frontier

Pick Dates

Deal found 12/4

Jan 6 - Jan 8
SEA

Seattle/Tacoma Intl

PHL

Philadelphia

1 stop

10h 36m
PHL

Philadelphia

SEA

Seattle/Tacoma Intl

1 stop

14h 22m
$164

Frontier

Pick Dates

Deal found 12/4

Jan 20 - Jan 26
SEA

Seattle/Tacoma Intl

PHL

Philadelphia

1 stop

8h 27m
PHL

Philadelphia

SEA

Seattle/Tacoma Intl

1 stop

14h 47m
$165

Frontier

Pick Dates

Deal found 12/2

  • One of the most popular airlines traveling from Seattle to Philadelphia is Frontier. Flights from Frontier traveling this route typically cost $428.60 RT. This price is typically 38% cheaper than other airlines that offer Seattle to Philadelphia flights. When booking this route, the cheapest RT price found was $159. Seattle/Tacoma Intl Airport is the most common Seattle airport to take off from when flying to Philadelphia. Philadelphia Airport is the most popular arrival airport in Philadelphia. When flying from Seattle to Philadelphia, Frontier flights are 21% more popular than any other airline flying that same route.

Cheap Spirit Airlines flights from Seattle to Philadelphia

Jan 26 - Jan 31
SEA

Seattle/Tacoma Intl

PHL

Philadelphia

1 stop

12h 00m
PHL

Philadelphia

SEA

Seattle/Tacoma Intl

1 stop

17h 30m
$204

Spirit Airlines

Pick Dates

Deal found 12/4

Jan 31 - Feb 7
SEA

Seattle/Tacoma Intl

PHL

Philadelphia

1 stop

12h 00m
PHL

Philadelphia

SEA

Seattle/Tacoma Intl

2 stops

17h 22m
$210

Spirit Airlines

Pick Dates

Deal found 12/4

Jan 3 - Jan 10
SEA

Seattle/Tacoma Intl

PHL

Philadelphia

1 stop

29h 57m
PHL

Philadelphia

SEA

Seattle/Tacoma Intl

1 stop

11h 21m
$221

Spirit Airlines

Pick Dates

Deal found 12/5

  • If you’re traveling from Seattle to Philadelphia, one of the more common airlines traveling that route is Spirit Airlines. Seattle to Philadelphia flights are typically 40% cheaper than other airlines traveling the same route. Flights from Spirit Airlines typically cost $507.20 RT. The cheapest Spirit Airlines flight found for this route was $179. When traveling from Seattle to Philadelphia on Spirit Airlines, the most popular airport to depart from is Seattle/Tacoma Intl Airport and the most popular airport to arrive at is Philadelphia Airport. When flying from Seattle to Philadelphia, Spirit Airlines flights are 14% more popular than any other airline flying that same route.

Non-stop flights to Philadelphia from Seattle

Save time with Seattle to Philadelphia direct flight deals
Jan 7 - Jan 9
SEA

Seattle/Tacoma Intl

PHL

Philadelphia

Nonstop

5h 03m
PHL

Philadelphia

SEA

Seattle/Tacoma Intl

Nonstop

6h 13m
$258

American Airlines

Pick Dates

Deal found 12/2

Feb 15 - Feb 21
SEA

Seattle/Tacoma Intl

PHL

Philadelphia

Nonstop

5h 07m
PHL

Philadelphia

SEA

Seattle/Tacoma Intl

Nonstop

6h 14m
$278

Multiple Airlines

Pick Dates

Deal found 12/2

Jan 22 - Jan 26
SEA

Seattle/Tacoma Intl

PHL

Philadelphia

Nonstop

5h 07m
PHL

Philadelphia

SEA

Seattle/Tacoma Intl

Nonstop

6h 14m
$285

Multiple Airlines

Pick Dates

Deal found 12/3

Last minute flights from Seattle to Philadelphia

Late deals on return flights to Philadelphia from Seattle, departing today and this week
Dec 10 - Dec 13
SEA

Seattle/Tacoma Intl

PHL

Philadelphia

1 stop

8h 22m
PHL

Philadelphia

SEA

Seattle/Tacoma Intl

1 stop

17h 30m
$164

Frontier

Pick Dates

Deal found 12/3

Dec 10 - Dec 14
SEA

Seattle/Tacoma Intl

PHL

Philadelphia

1 stop

8h 22m
PHL

Philadelphia

SEA

Seattle/Tacoma Intl

1 stop

17h 34m
$165

Frontier

Pick Dates

Deal found 12/4

Dec 10 - Feb 28
SEA

Seattle/Tacoma Intl

PHL

Philadelphia

1 stop

8h 22m
PHL

Philadelphia

SEA

Seattle/Tacoma Intl

1 stop

23h 32m
$167

Frontier

Pick Dates

Deal found 12/3

One-way flights to Philadelphia from Seattle

The cheapest one-way flights from Seattle to Philadelphia
Dec 13
SEA

Seattle/Tacoma Intl

PHL

Philadelphia

1 stop

8h 12m
$81

Frontier

Pick Dates

Deal found 12/2

Feb 6
SEA

Seattle/Tacoma Intl

PHL

Philadelphia

1 stop

18h 57m
$86

Frontier

Pick Dates

Deal found 12/2

Jan 14
SEA

Seattle/Tacoma Intl

PHL

Philadelphia

1 stop

19h 01m
$87

Frontier

Pick Dates

Deal found 12/4

Related info for your journey

Useful info, stats and facts about Seattle to Philadelphia flights.

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

To fly from Seattle to Philadelphia, you need to book a flight from Seattle/Tacoma Intl (SEA) to Philadelphia (PHL). Nonstop flights to Philadelphia from Seattle/Tacoma Intl take 4h 52m on average. When it comes time to book airfare, you have a few options: there are 4 outbound flights from Seattle/Tacoma Intl to Philadelphia offered by 10 different airlines.

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

Some of our airline partners flying from Seattle/Tacoma Intl to Philadelphia have new flexible policies in place due to COVID-19. American Airlines, Alaska Airlines, and Delta are some of the carriers where you may find flexible cancellation policies. You can use our site to filter for airlines like American Airlines with this kind of flexibility.

Can I find flights from Seattle to Philadelphia for under $200 on Cheapflights?

Yes, there are multiple flights from Seattle to Philadelphia for under $200. The cheapest flight booked recently is on Frontier for just $163, but on average you can expect to pay $186.

Are there nonstop flights from Seattle to Philadelphia for under $300 on Cheapflights?

Cheapflights has at least 20 direct flights from Seattle to Philadelphia under $300. A good price for a nonstop flight from Seattle to Philadelphia is less than $317.

Are there last-minute flights available from Seattle to Philadelphia for under $200?

There are currently 20+ open flights from Seattle to Philadelphia within the next 7 days for less than $200.

How popular is this Seattle to Philadelphia flight route?

Flights from Seattle/Tacoma Intl to Philadelphia have been viewed 17 times in the past calendar month.

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

Currently priced at $163, Frontier will fly you from Seattle to Philadelphia and back. In addition to Frontier, many other airlines offer competitively priced options for your trip. Check Cheapflights for deals on Spirit Airlines for as low as $204. Frontier is currently priced 66% 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 $81 on Frontier. Other airlines that offer cheap prices include Spirit Airlines from $99 and JetBlue from $114 one-way.

What are the most popular airlines that fly from Seattle to Philadelphia?

American Airlines, Alaska Airlines and JetBlue are the most popular airlines when flying from Seattle to Philadelphia.

What are the most reliable airlines from Seattle to Philadelphia?

No one likes to see their flight delayed. When booking a flight from Seattle to Philadelphia consider choosing American Airlines (94%), Air Tahiti Nui (73%) or Alaska Airlines (72%) as they are the most reliable in getting you off to your destination on time.

What are the cheapest flights from Seattle to Philadelphia?

Looking at all options, your cheapest flight can be booked for $80. While the most popular route (Seattle/Tacoma Intl - Philadelphia) can be booked for $186 on average our data indicates $1,072 when flying from Seattle to Philadelphia.

Alternative routes for Seattle to Philadelphia

See prices for flight routes from nearby airports that may be better suited for you.

Top 9 airlines flying from Seattle to Philadelphia

The chart below displays the airlines Cheapflights users traveling from Seattle to Philadelphia choose most often. Cheapest and average prices are based on aggregated data from the past 12 months.
AirlineCheapestAverageFlexibilityOn-timeCOVID-19 safety
Juneyao AirlinesCheapest$12Average$22FlexibilityNo cancel feeOn-time66%COVID-19 safety
Search Juneyao Airlines flights
Spirit AirlinesCheapest$138Average$269FlexibilityNo cancel feeOn-time65%COVID-19 safety
Search Spirit Airlines flights
Alaska AirlinesCheapest$159Average$429FlexibilityNo cancel feeOn-time75%COVID-19 safety
Search Alaska Airlines flights
United AirlinesCheapest$161Average$469FlexibilityNo cancel feeOn-time69%COVID-19 safety
Search United Airlines flights
FrontierCheapest$162Average$238FlexibilityNo cancel feeOn-time62%COVID-19 safety
Search Frontier flights
Sun Country AirCheapest$162Average$275FlexibilityNo cancel feeOn-time83%COVID-19 safety
Search Sun Country Air flights
DeltaCheapest$172Average$493FlexibilityNo cancel feeOn-timeN/ACOVID-19 safety
Search Delta flights
American AirlinesCheapest$179Average$507FlexibilityNo cancel feeOn-time71%COVID-19 safety
Search American Airlines flights
JetBlueCheapest$199Average$298FlexibilityNo cancel feeOn-time62%COVID-19 safety
Search JetBlue flights

Hourly flight availability from Seattle to Philadelphia

See what time of day planes typically take off from Seattle to Philadelphia
1%of flight departuresEarly morningMidnight to 6 am
65%of flight departuresMorning6 am to noon
0%of flight departuresAfternoonNoon to 6 pm
34%of flight departuresEvening6 pm to midnight
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
Sunday4daily flights
Monday4daily flights
Tuesday4daily flights
Wednesday4daily flights
Thursday4daily flights
Friday4daily flights
Saturday4daily flights