Cheap flights from Philadelphia to Seattle (PHL - SEA) from $83

This is the cheapest one-way flight price, found on 12/5. Prices may vary by date and flight preferences.
PHL — SEA
Dec 12 — Dec 191

The best prices from Philadelphia to Seattle/Tacoma Intl are usually found in October or January, booked 63 days in advance, depart on a Tuesday or Wednesday and return on a Monday

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

Discover tips and strategies to find the most affordable flight options for your journey from Philadelphia (PHL) to Seattle (SEA). 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 December 7, 2023.

Popular in

June

Cheapest in

October

Round-trip from

$238

One-way from

$138
High demand for flights, 33% potential price rise
Best time to find cheap flights, 27% potential price drop
From Philadelphia to Seattle/Tacoma Intl
One-way flight from Philadelphia to Seattle/Tacoma Intl

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

Users have found that flying from Philadelphia to Seattle on a Saturday 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 Philadelphia to Seattle?

Users have found that booking a flight from Philadelphia to Seattle at least 40 days early can save you up to 107% on average compared to booking a flight this week. If booking 40 days before your flight isn’t an option for you, users have found flights from Philadelphia to Seattle for as little as $505 when booking for a departure date within the next two weeks. You can also check prices now. Some users have found airline tickets as low as $759 for flights departing within the next 3 days.

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

The best pricing can be found in the month of October. Prices to Seattle from Philadelphia average $418. You can even find prices in October for less than $418, as users have found deals to Seattle from as low as $139. The month of June appears to be one of the more expensive times to travel to Seattle from Philadelphia. Flying in the targeted month can save you up to 48%.

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

One of the essential ways to save on airfare from Philadelphia to Seattle is to remain as flexible as possible. Flights that are at noon tend to be the most expensive. A flight in the evening could potentially save you up to 54% on airfare.

Cheap Frontier flights from Philadelphia to Seattle

Explore cheap flight options specifically provided by Frontier for the route between Philadelphia and Seattle. Find affordable fares and compare prices with other airlines to secure the best deal for your journey. Over the last 7 days, Cheapflights users made 2,618,515 searches. Data last updated December 7, 2023.
Consider these cheap Frontier flights we've found departing from Philadelphia to Seattle. Make sure to double check the flight details before booking.
  • One of the most popular airlines traveling from Philadelphia to Seattle is Frontier. Flights from Frontier traveling this route typically cost $378.90 RT. This price is typically 52% cheaper than other airlines that offer Philadelphia to Seattle flights. When booking this route, the cheapest RT price found was $168. Philadelphia Airport is the most common Philadelphia airport to take off from when flying to Seattle. Seattle/Tacoma Intl Airport is the most popular arrival airport in Seattle. When flying from Philadelphia to Seattle, Frontier flights are 14% more popular than any other airline flying that same route.

Cheap American Airlines flights from Philadelphia to Seattle

Explore cheap flight options specifically provided by American Airlines for the route between Philadelphia and Seattle. Find affordable fares and compare prices with other airlines to secure the best deal for your journey. Over the last 7 days, Cheapflights users made 2,618,515 searches. Data last updated December 7, 2023.
To aid your search, here are some of the cheapest American Airlines flights we've found from Philadelphia to Seattle. If these deals don't fit your criteria, make sure to check back soon as new deals are always added.
  • If you’re traveling from Philadelphia to Seattle, one of the more common airlines traveling that route is American Airlines. Flights from American Airlines traveling this route typically cost $423.40 RT. This price is typically 61% more expensive than other airlines that offer Philadelphia to Seattle flights. When booking this route, the cheapest RT price found was $181. The most popular departure airport in Philadelphia when flying to Seattle is Philadelphia Airport. The most popular airport to fly into when visiting Seattle is Seattle/Tacoma Intl Airport. When flying from Philadelphia to Seattle, American Airlines flights are 4% more popular than any other airline flying that same route.

Cheap Philadelphia to Seattle flights in December & January 2023

Find cheap flight options from Philadelphia to Seattle specifically for the months of December and January 2023. Explore affordable fares based on user searches. Over the last 7 days, Cheapflights users made 2,618,515 searches. Prices were last updated on December 7, 2023.
Scroll through some of the best deals on flights from Philadelphia to Seattle in 2023. Check back soon for alternative fares.

Philadelphia to Seattle 2023 flight deals

Discover exclusive flight deals for travel between Philadelphia and Seattle in 2023. Find excellent offers based on user searches. Over the last 7 days, Cheapflights users made 2,618,515 searches. Data last updated December 7, 2023.
Scroll through some of the best deals on flights from Philadelphia to Seattle in 2023. Check back soon for alternative fares.

Non-stop flights to Seattle from Philadelphia

Discover non-stop flight options from Philadelphia to Seattle. Find direct flights with no layovers, providing a convenient travel experience. Explore non-stop flight options based on user searches, and compare prices and availability for your desired travel dates. Over the last 7 days, Cheapflights users made 2,618,515 searches. Data last updated December 7, 2023.
Take a look at some of the direct flights traveling from Philadelphia to Seattle in the near future. Search for alternative flights from Philadelphia to Seattle by utilizing the search form above.

Philadelphia to Seattle flights leaving soon

Find last-minute flight options from Philadelphia to Seattle for spontaneous travel. Discover available flights and compare prices based on user searches. Secure great deals and offers for spontaneous trips with quick booking options. Over the last 7 days, Cheapflights users made 2,618,515 searches. Data last updated December 7, 2023.
Users seeking a last-minute flight from Philadelphia to Seattle should consider booking one of these fares. Users should double check the flight they book to ensure it matches the day, time, and destination they're looking for.

One-way flights to Seattle from Philadelphia

Search for one-way flight options from Philadelphia to Seattle. Find affordable one-way fares based on user searches. Compare prices and availability to plan your one-way journey according to your preferred dates and budget. Over the last 7 days, Cheapflights users made 2,618,515 searches. Data last updated December 7, 2023.
Take a look at some of the best available options we've come across on one-way flights from Philadelphia to Seattle. For those needing a return trip from Philadelphia, there is a search form available above.

Find flights from Philadelphia to Seattle within your budget

Customize your flight search to find flights from Philadelphia to Seattle 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 2,618,515 searches. Data last updated December 7, 2023.

Fly from

Any airport

Fly to

Any airport

Budget

$198 - $282

Route

Depart

Return

Price

PhiladelphiaSeattle/Tacoma Intl

PHL - SEA

PHLSEA

Philadelphia

Sat 1/13

1 stop25h 14m

Seattle/Tacoma Intl

Mon 1/15

1 stop8h 35m

$198

PhiladelphiaSeattle/Tacoma Intl

PHL - SEA

PHLSEA

Philadelphia

Tue 1/9

1 stop18h 17m

Seattle/Tacoma Intl

Tue 1/16

2 stops18h 02m

$200

PhiladelphiaSeattle/Tacoma Intl

PHL - SEA

PHLSEA

Philadelphia

Fri 1/12

1 stop28h 30m

Seattle/Tacoma Intl

Tue 1/16

2 stops18h 02m

$208

PhiladelphiaSeattle/Tacoma Intl

PHL - SEA

PHLSEA

Philadelphia

Tue 1/23

2 stops21h 51m

Seattle/Tacoma Intl

Sat 1/27

1 stop16h 43m

$213

PhiladelphiaSeattle/Tacoma Intl

PHL - SEA

PHLSEA

Philadelphia

Sat 1/20

1 stop9h 10m

Seattle/Tacoma Intl

Tue 1/23

1 stop7h 40m

$249

PhiladelphiaSeattle/Tacoma Intl

PHL - SEA

PHLSEA

Philadelphia

Tue 1/9

Nonstop6h 16m

Seattle/Tacoma Intl

Tue 1/16

Nonstop4h 58m

$258

PhiladelphiaSeattle/Tacoma Intl

PHL - SEA

PHLSEA

Philadelphia

Thu 1/18

Nonstop6h 10m

Seattle/Tacoma Intl

Wed 1/24

Nonstop5h 07m

$268

PhiladelphiaSeattle/Tacoma Intl

PHL - SEA

PHLSEA

Philadelphia

Thu 1/18

1 stop8h 37m

Seattle/Tacoma Intl

Wed 1/24

1 stop7h 55m

$277

PhiladelphiaSeattle/Tacoma Intl

PHL - SEA

PHLSEA

Philadelphia

Tue 1/23

2 stops12h 20m

Seattle/Tacoma Intl

Tue 1/30

1 stop10h 10m

$282

Flights are sorted by cheapest first

Deals found on 12/7

Average price of flights to Seattle by month

Plan your trip from Philadelphia to Seattle by taking into account the cheapest months to travel. The average price of a one-way flight from Philadelphia to Seattle is currently 98.00 USD while a round-trip flight costs 239.22 USD. Price data was last updated on December 3, 2023.

Currently, January is the cheapest month in which you can book a flight from Philadelphia to Seattle (average of $238). Flying from Philadelphia to Seattle in June is currently the most expensive (average of $433). 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.

January

$238

February

$238

March

$287

April

$306

May

$338

June

$433

July

$417

August

$346

September

$278

October

$258

November

$258

December

$245

Reviews of airlines servicing Seattle

Get insights into the airlines that provide service to Seattle. 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 Seattle. Reviews last updated December 7, 2023.
Read through reviews of airlines operating flights from Philadelphia to Seattle, such as Frontier, American Airlines and Spirit Airlines. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.
8.1
Very good
1,404 reviews

Boarding

8.3

Crew

8.6

Comfort

8.0

Food

7.2

Entertainment

7.2

Overall

8.1

Reviews

1 / 10

Was forced to check my bag, didn’t want to but really upset when got on the plane and nearly all the overheads were empty. And then even more upset when they lost my bag! So far it’s been 5 hours and they have no clue where my bag went. Don’t force me to check a normal carry on when there’s more than enough room!

8.1
Very good
1,404 reviews
8.1
Very good
1,404 reviews

Boarding

8.3

Crew

8.6

Comfort

8.0

Food

7.2

Entertainment

7.2

Overall

8.1

Reviews

1 / 10

Was forced to check my bag, didn’t want to but really upset when got on the plane and nearly all the overheads were empty. And then even more upset when they lost my bag! So far it’s been 5 hours and they have no clue where my bag went. Don’t force me to check a normal carry on when there’s more than enough room!

7.9
Good
3,035 reviews
8.1
Very good
1,404 reviews

Boarding

8.3

Crew

8.6

Comfort

8.0

Food

7.2

Entertainment

7.2

Overall

8.1

Reviews

1 / 10

Was forced to check my bag, didn’t want to but really upset when got on the plane and nearly all the overheads were empty. And then even more upset when they lost my bag! So far it’s been 5 hours and they have no clue where my bag went. Don’t force me to check a normal carry on when there’s more than enough room!

7.4
Good
1,902 reviews
8.1
Very good
1,404 reviews

Boarding

8.3

Crew

8.6

Comfort

8.0

Food

7.2

Entertainment

7.2

Overall

8.1

Reviews

1 / 10

Was forced to check my bag, didn’t want to but really upset when got on the plane and nearly all the overheads were empty. And then even more upset when they lost my bag! So far it’s been 5 hours and they have no clue where my bag went. Don’t force me to check a normal carry on when there’s more than enough room!

7.2
Good
2,645 reviews
8.1
Very good
1,404 reviews

Boarding

8.3

Crew

8.6

Comfort

8.0

Food

7.2

Entertainment

7.2

Overall

8.1

Reviews

1 / 10

Was forced to check my bag, didn’t want to but really upset when got on the plane and nearly all the overheads were empty. And then even more upset when they lost my bag! So far it’s been 5 hours and they have no clue where my bag went. Don’t force me to check a normal carry on when there’s more than enough room!

7.2
Good
782 reviews
8.1
Very good
1,404 reviews

Boarding

8.3

Crew

8.6

Comfort

8.0

Food

7.2

Entertainment

7.2

Overall

8.1

Reviews

1 / 10

Was forced to check my bag, didn’t want to but really upset when got on the plane and nearly all the overheads were empty. And then even more upset when they lost my bag! So far it’s been 5 hours and they have no clue where my bag went. Don’t force me to check a normal carry on when there’s more than enough room!

Average temperature in Seattle by month

Plan your trip to Seattle by selecting the month that matches your preferred temperature. July sees the highest average temperature while December sees the lowest average temperature. Temperature data was last updated on December 3, 2023.

SEA

Temperature

41 - 66.2 °F

Average rainfall in Seattle by month

Keep in mind the precipitation totals in Seattle when planning your trip. Seattle sees an average of 3.13 precipitation per year with the most occurring in November. Precipitation data was last updated on December 3, 2023.

SEA

Rainfall

0.7 - 6.6 inches

Related info for your journey

Find useful and relevant information for your journey from Philadelphia to Seattle. 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 Philadelphia to Seattle?

Booking a flight from Philadelphia (PHL) to Seattle/Tacoma Intl (SEA) is your only option if you wish to fly from Philadelphia to Seattle. On a typical day, there are 3 flights from Philadelphia to Seattle/Tacoma Intl, all of which are around 5h 51m for a nonstop flight. You can also purchase a plane ticket from 9 airlines when you book a flight from Philadelphia to Seattle.

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

Yes, there are multiple flights from Philadelphia to Seattle for under $200. The cheapest flight booked recently is on Frontier for just $198, but on average you can expect to pay $221.

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

Cheapflights has at least 20 direct flights from Philadelphia to Seattle under $300. A good price for a nonstop flight from Philadelphia to Seattle is less than $361.

Are there last-minute flights available from Philadelphia to Seattle for under $300?

There are currently 20+ open flights from Philadelphia to Seattle within the next 7 days for less than $300.

What days are nonstop flights available from Philadelphia to Seattle?

Nonstop flights are available for this route on the following days: Sunday, Monday, Tuesday, Thursday, Friday.

How popular is this Philadelphia to Seattle flight route?

How many flights depart from Philadelphia to Seattle on average per day?

On average, you can expect to see 5 flights from Philadelphia to Seattle a day.
Evening (6pm - Midnight) - 100% of flight departures

How long is the flight from Philadelphia to Seattle?

A quick flight from Philadelphia to Seattle can take about 9h 10m. Frontier provides one of the quickest options available for as low as $198. The distance between Philadelphia and Seattle is about 2385 mi. When browsing for deals, the options you’ll see will be for both nonstop flights and flights with stops.

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

According to our current data, Frontier ($198), Spirit Airlines ($213), and JetBlue ($249) offers the cheapest pricing from Philadelphia to Seattle. These flights start at 52% lower than the current average price 3 months from now.

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

One-way options have recently been found by users for as low as $83 on Spirit Airlines. Other airlines that offer cheap prices include Frontier from $89 and Alaska Airlines from $129 one-way.

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

What are the most reliable airlines from Philadelphia to Seattle?

Consider Air Tahiti Nui (91%), American Airlines (84%) or Alaska Airlines (84%) when booking your flight. These represent the most reliable airlines when flying from Philadelphia to Seattle.

What are the cheapest flights from Philadelphia to Seattle?

While on average a flight from Philadelphia to Seattle is generally $1,069, our data shows the cheapest flight currently is $119. When looking at the most popular route, (Philadelphia - Seattle/Tacoma Intl), you can expect to pay $200 for that flight.

What does PHL to SEA mean?

PHL stands for Philadelphia Airport, while SEA stands for Seattle/Tacoma Intl Airport. These codes are often called IATA codes, a set of identifiers established by IATA (International Air Transport Association) that is widely used by airlines and the aviation industry.

Browse thousands of different options on Cheapflights for your next trip

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Fly from Philadelphia to Seattle on these airlines
Choose from the following airlines for your flight from Philadelphia to Seattle. Flights are based on user searches made on Cheapflights and were last updated on December 7, 2023.

Top 8 airlines flying from Philadelphia to Seattle

Discover the top 8 airlines that operate flights from Philadelphia to Seattle. 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 2,618,515 searches. Data last updated December 7, 2023.
AirlineCheapestAverageFlexibilityOn-time
FrontierCheapest$107Average$226FlexibilityNo cancel feeOn-time62%
Search Frontier flights
JetBlueCheapest$114Average$114FlexibilityNo cancel feeOn-time62%
Search JetBlue flights
Spirit AirlinesCheapest$138Average$288FlexibilityNo cancel feeOn-time65%
Search Spirit Airlines flights
DeltaCheapest$138Average$381FlexibilityNo cancel feeOn-timeN/A
Search Delta flights
Alaska AirlinesCheapest$168Average$379FlexibilityNo cancel feeOn-time75%
Search Alaska Airlines flights
United AirlinesCheapest$181Average$423FlexibilityNo cancel feeOn-time69%
Search United Airlines flights
American AirlinesCheapest$214Average$508FlexibilityNo cancel feeOn-time71%
Search American Airlines flights
Sun Country AirCheapest$261Average$591FlexibilityNo cancel feeOn-time83%
Search Sun Country Air flights

Search flights to Seattle by cabin class

Hourly flight availability from Philadelphia to Seattle

Find hourly flight availability from Philadelphia to Seattle. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated December 7, 2023.
1%of flight departuresEarly morningMidnight to 6 am
0%of flight departuresMorning6 am to noon
9%of flight departuresAfternoonNoon to 6 pm
90%of flight departuresEvening6 pm to midnight
Midnight
6 AM
Noon
6 PM

Weekly flight availability from Philadelphia to Seattle

Explore weekly flight availability from Philadelphia to Seattle. 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 December 7, 2023.
Sunday4daily flights
Monday5daily flights
Tuesday3daily flights
Wednesday2daily flights
Thursday2daily flights
Friday3daily flights
Saturday4daily flights

Book a flight to one of these trending destinations

User searches for flights to these destinations increased 20% or more in the past 90 days compared to other destinations

Fly with Cheapflights

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

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

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

Yes! Cheapflights helps users easily find flights from Philadelphia to Seattle with no change fees.

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

Of course! You can now track prices for flights from Philadelphia to Seattle and get an alert from Cheapflights when they change. Have a valid email address ready and click the bell icon next to the flight deals above to set up your price alerts.

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