How long does it take to fly to Philadelphia?

If you’re flying from a popular airport in State of Washington, such as Seattle or Spokane, and flying into Philadelphia, then you can expect flight times to average 5h 15m and 6h 33m, respectively.

What airlines fly to Philadelphia?

Alaska Airlines, Delta and American Airlines are the top three most popular airlines that fly to Philadelphia from State of Washington according to our data. Alaska Airlines is the first choice among our users, with 46% of people opting to fly with this airline when traveling to Philadelphia. Keep in mind that there are 10 different airlines that fly to Philadelphia on a routine basis, so you have a few additional options to choose from.

What is the cheapest airline that flies from Washington to Philadelphia?

Frontier, Alaska Airlines, and United Airlines are the most popular carriers operating from Washington to Philadelphia

When did momondo last update prices for flights from Washington to Philadelphia Airport?

Prices for flights from Washington to Philadelphia Airport are updated daily.

How many operators does momondo search for flights from Washington to Philadelphia Airport?

As of September 2025, there are 9 operators available to choose from for flights from Washington to Philadelphia Airport.

How old do you have to be to fly from Washington to Philadelphia Airport?

The minimum age for a child to fly alone is five, but airlines that offer an unaccompanied minor (UNMR) service may have their own age limitations. Flight duration, scheduling, and layovers are among the considerations that may influence age limits. We recommend that you double-check with the airline you are booking with for travel from Washington to Philadelphia Airport.

What documentation or ID do you need to fly to Philadelphia Airport?

The travel and health documents you'll need for your trip to Philadelphia Airport may differ based on your itinerary and personal situation. Typically, you should have several documents on hand, such as a national ID card or driver's license and a passport that is valid for six months after your intended arrival at Philadelphia Airport. It is always advisable to seek advice from your airline or a trusted third party, such as IATA.

$146 Cheap Flights from Washington to Philadelphia in 2025/26

Q: How many flights depart from State of Washington to Philadelphia on average per day?

9 flights are operational daily from State of Washington to Philadelphia as of September 2025. The most popular departure time for this route is 7:00AM, with 61% of flights per day taking off at noon.

Q: How many flights depart from State of Washington to Philadelphia on average per week?

As of September 2025, there are 64 flights per week flying from State of Washington to Philadelphia. The most common day of the week flights depart is Mon, with 17% of flights taking off on this day.

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Find the cheapest flights from Washington to Philadelphia

Round-trip

One-way

Last minute

Direct

Cheap round-trip flights

2:22 pm - 11:24 amSEA-PHL

18h 02m2 stops

10:32 pm - 1:03 pmPHL-SEA

17h 31m2 stops

$265Frontier

Find Deal

Fri, Oct 31 - Sun, Nov 2

10:54 pm - 7:00 amSEA-PHL

5h 06mnonstop

8:09 am - 11:03 amPHL-SEA

5h 54mnonstop

$272American Airlines

Find Deal

Sat, Oct 25 - Sun, Oct 26

2:31 pm - 6:00 pmSEA-PHL

24h 29m2 stops

6:19 am - 12:13 pmPHL-SEA

8h 54m1 stop

$275Frontier

Find Deal

Fri, Oct 24 - Thu, Oct 30

11:40 am - 12:52 amSEA-PHL

10h 12m1 stop

7:05 am - 12:47 pmPHL-SEA

8h 42m1 stop

$277Delta

Find Deal

Tue, Oct 21 - Wed, Oct 29

1:57 pm - 12:45 amSEA-PHL

7h 48m1 stop

6:30 am - 1:42 pmPHL-SEA

10h 12m2 stops

$282United Airlines

Find Deal

Thu, Oct 23 - Sat, Oct 25

9:23 pm - 5:40 amSEA-PHL

5h 17mnonstop

7:12 pm - 10:30 pmPHL-SEA

6h 18mnonstop

$284Alaska Airlines

Find Deal

Fri, Oct 24 - Mon, Oct 27

5:40 am - 9:15 pmSEA-PHL

12h 35m2 stops

1:50 pm - 10:55 pmPHL-SEA

12h 05m2 stops

$293Southwest

Find Deal

Mon, Dec 8 - Tue, Dec 16

9:23 pm - 5:40 amSEA-PHL

5h 17mnonstop

7:11 pm - 10:29 pmPHL-SEA

6h 18mnonstop

$297Alaska Airlines

Find Deal

Mon, Oct 13 - Wed, Oct 15

11:10 am - 12:45 amSEA-PHL

10h 35m2 stops

5:07 pm - 10:45 pmPHL-SEA

8h 38m1 stop

$305United Airlines

Find Deal

Thu, Oct 23 - Mon, Oct 27

5:00 pm - 5:50 amSEA-PHL

9h 50m1 stop

6:50 pm - 11:59 pmPHL-SEA

8h 09m1 stop

$317Delta

Find Deal

Mon, Oct 13 - Fri, Oct 17

American Airlines flights from State of Washington to Philadelphia

Our best American Airlines deals on State of Washington to Philadelphia flight tickets

American Airlines

Oct 25

SEA10:54 pmSeattle/Tacoma Intl

5h 06m

PHL7:00 amPhiladelphia

Oct 26

PHL8:09 amPhiladelphia

5h 54m

SEA11:03 amSeattle/Tacoma Intl

$272

Find similar

American Airlines

Oct 13

SEA11:56 pmSeattle/Tacoma Intl

7h 48m

1 stop

PHL10:44 amPhiladelphia

Oct 21

PHL8:09 amPhiladelphia

5h 54m

SEA11:03 amSeattle/Tacoma Intl

$306

Find similar

American Airlines

Oct 15

SEA10:54 pmSeattle/Tacoma Intl

5h 06m

PHL7:00 amPhiladelphia

Oct 19

PHL8:09 amPhiladelphia

5h 54m

SEA11:03 amSeattle/Tacoma Intl

$327

Find similar

United Airlines flights from State of Washington to Philadelphia

Our best United Airlines deals on State of Washington to Philadelphia flight tickets

United Airlines

Oct 23

SEA1:57 pmSeattle/Tacoma Intl

7h 48m

1 stop

PHL12:45 amPhiladelphia

Oct 25

PHL6:30 amPhiladelphia

10h 12m

2 stops

SEA1:42 pmSeattle/Tacoma Intl

$282

Find similar

United Airlines

Oct 23

SEA11:10 amSeattle/Tacoma Intl

10h 35m

2 stops

PHL12:45 amPhiladelphia

Oct 27

PHL5:07 pmPhiladelphia

8h 38m

1 stop

SEA10:45 pmSeattle/Tacoma Intl

$305

Find similar

United Airlines

Oct 21

SEA5:00 amSeattle/Tacoma Intl

9h 35m

2 stops

PHL5:35 pmPhiladelphia

Oct 28

PHL5:07 pmPhiladelphia

8h 38m

1 stop

SEA10:45 pmSeattle/Tacoma Intl

$322

Find similar

momondo Fare Finder

Use the filters below to find and compare flights from Washington to Philadelphia that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

SeattlePhiladelphia

SEA - PHL

SEAPHL

Seattle/Tacoma Intl

Fri 10/31

2:22 pm-11:24 am

2 stops18h 02m

Philadelphia

Sun 11/2

10:32 pm-1:03 pm

2 stops17h 31m

$265

SeattlePhiladelphia

SEA - PHL

SEAPHL

Seattle/Tacoma Intl

Sat 10/25

10:54 pm-7:00 am

Nonstop5h 06m

Philadelphia

Sun 10/26

8:09 am-11:03 am

Nonstop5h 54m

$272

SeattlePhiladelphia

SEA - PHL

SEAPHL

Seattle/Tacoma Intl

Fri 10/24

2:31 pm-6:00 pm

2 stops24h 29m

Philadelphia

Thu 10/30

6:19 am-12:13 pm

1 stop8h 54m

$275

SeattlePhiladelphia

SEA - PHL

SEAPHL

Seattle/Tacoma Intl

Tue 10/21

11:40 am-12:52 am

1 stop10h 12m

Philadelphia

Wed 10/29

7:05 am-12:47 pm

1 stop8h 42m

$277

SeattlePhiladelphia

SEA - PHL

SEAPHL

Seattle/Tacoma Intl

Thu 10/23

1:57 pm-12:45 am

1 stop7h 48m

Philadelphia

Sat 10/25

6:30 am-1:42 pm

2 stops10h 12m

$282

SeattlePhiladelphia

SEA - PHL

SEAPHL

Seattle/Tacoma Intl

Fri 10/24

9:23 pm-5:40 am

Nonstop5h 17m

Philadelphia

Mon 10/27

7:12 pm-10:30 pm

Nonstop6h 18m

$284

SeattlePhiladelphia

SEA - PHL

SEAPHL

Seattle/Tacoma Intl

Mon 12/8

5:40 am-9:15 pm

2 stops12h 35m

Philadelphia

Tue 12/16

1:50 pm-10:55 pm

2 stops12h 05m

$293

SeattlePhiladelphia

SEA - PHL

SEAPHL

Seattle/Tacoma Intl

Mon 10/13

9:23 pm-5:40 am

Nonstop5h 17m

Philadelphia

Wed 10/15

7:11 pm-10:29 pm

Nonstop6h 18m

$297

SeattlePhiladelphia

SEA - PHL

SEAPHL

Seattle/Tacoma Intl

Thu 10/23

11:10 am-12:45 am

2 stops10h 35m

Philadelphia

Mon 10/27

5:07 pm-10:45 pm

1 stop8h 38m

$305

SeattlePhiladelphia

SEA - PHL

SEAPHL

Seattle/Tacoma Intl

Mon 10/13

5:00 pm-5:50 am

1 stop9h 50m

Philadelphia

Fri 10/17

6:50 pm-11:59 pm

1 stop8h 09m

$317

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Showing 1-10 of 20 resultsSorted by cheapest first

How to get the cheapest flight ticket from State of Washington to Philadelphia

Look no further. We've gone through all the searches for this route on momondo so you have the important information and insights to find the cheapest flight ticket for your trip

Prices

Airlines

Other information

What is the cheapest month to fly to Philadelphia?

The cheapest month to fly to Philadelphia from State of Washington is in March. Flight prices, which tend to average around $387, are often lower during this time because this is during the off-season. The month of January is another great option to travel to Philadelphia, with average flight prices from State of Washington averaging around $402.

What is the cheapest day to depart on your flight to Philadelphia?

The cheapest day to depart from State of Washington to Philadelphia is on a Wednesday. Travelers who choose to depart for Philadelphia on a Wednesday will often find tickets for as low as $459. On the other hand, Sunday is the most expensive day to depart from State of Washington because it is more convenient for both business and leisure travelers. As a result, prices tend to be around $588.

What is the cheapest time of day to depart on your flight to Philadelphia?

According to our data, the cheapest time of day to fly to Philadelphia is at noon. momondo users have found flights departing from State of Washington to Philadelphia at noon for as low as $344. Keep in mind that these prices may fluctuate based on what airline you choose and the time of year you plan to travel. In contrast, the most expensive time of day to depart to Philadelphia is in the afternoon when prices are around $726.

What is the cheapest Washington to Philadelphia flight route?

Fly from Seattle/Tacoma Intl to Philadelphia for the best Washington - Philadelphia flight prices

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

You are more likely to see cheaper flights to Philadelphia from State of Washington when booking weeks ahead of your departure date. In general, you can expect to find flights to Philadelphia for around $450 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Philadelphia from State of Washington for as low as $361 on momondo.

What cabin class options are available on Washington to Philadelphia flights?

There are 4 cabin classes available to choose from on Washington to Philadelphia flights. Cabin price and availability will vary by airline so perform a search above to find the right deals for you.

Can stopping save me money on State of Washington to Philadelphia flights?

No. A direct flight is the cheapest option for a flight between State of Washington to Philadelphia.

Cheap State of Washington to Philadelphia flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from State of Washington to Philadelphia

Best Price Found	$189
Fastest flight time	4h 58m
Direct flights	Every day
Airports in Philadelphia	1 airport

The best one-way flight to Philadelphia from State of Washington in the past 72 hours is $189. The best round-trip flight deal from State of Washington to Philadelphia found on momondo in the last 72 hours is $331.

The fastest flight from State of Washington to Philadelphia takes 4h 58m

Direct flights go from State of Washington to Philadelphia every day.

There is 1 airport near Philadelphia: Philadelphia (PHL)

Search flight deals

When did momondo last update prices for flights from Washington to Philadelphia Airport?
Prices for flights from Washington to Philadelphia Airport are updated daily.
How many operators does momondo search for flights from Washington to Philadelphia Airport?
As of September 2025, there are 9 operators available to choose from for flights from Washington to Philadelphia Airport.
How old do you have to be to fly from Washington to Philadelphia Airport?
The minimum age for a child to fly alone is five, but airlines that offer an unaccompanied minor (UNMR) service may have their own age limitations. Flight duration, scheduling, and layovers are among the considerations that may influence age limits. We recommend that you double-check with the airline you are booking with for travel from Washington to Philadelphia Airport.
What documentation or ID do you need to fly to Philadelphia Airport?
The travel and health documents you'll need for your trip to Philadelphia Airport may differ based on your itinerary and personal situation. Typically, you should have several documents on hand, such as a national ID card or driver's license and a passport that is valid for six months after your intended arrival at Philadelphia Airport. It is always advisable to seek advice from your airline or a trusted third party, such as IATA.
What is the most popular plane model from State of Washington to Philadelphia?
Based on momondo bookings for flights between State of Washington and Philadelphia, the leading plane model is Boeing 737 MAX 9, making up 41.09% of the total bookings. Other popular models include Airbus A321-100/200 with 25.32%, Boeing 737-900 Passenger/BBJ3 (winglets) with 12.02%, and Boeing 737 with 7.08%.

Best airlines flying from State of Washington to Philadelphia

Compare and see reviews for airlines that fly from State of Washington to Philadelphia with momondo

Airline	Rating	Free Cancellation	Price
Spirit Airlines	PriceFrom $114	Free Cancellation	Rating 6.3 8,041 reviews	Search Spirit Airlines flights
Frontier	PriceFrom $131	Free Cancellation	Rating 5.8 3,165 reviews	Search Frontier flights
United Airlines	PriceFrom $223	Free Cancellation	Rating 7.4 8,926 reviews	Search United Airlines flights
Delta	PriceFrom $233	Free Cancellation	Rating 7.9 7,974 reviews	Search Delta flights
Hawaiian Airlines	PriceFrom $277	Free Cancellation	Rating 7.8 2,744 reviews	Search Hawaiian Airlines flights
American Airlines	PriceFrom $277	Free Cancellation	Rating 7.2 10,000 reviews	Search American Airlines flights
Alaska Airlines	PriceFrom $278	Free Cancellation	Rating 8.0 10,000 reviews	Search Alaska Airlines flights
Southwest	PriceFrom $343	Free Cancellation	Rating 8.0 4,244 reviews	Search Southwest flights

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Why use momondo?

Why should I use momondo to find a flight deal from Washington to Philadelphia?

Finding the right flight to Philadelphia from Washington is quick and easy when you have a range of options in front of you, from reputable agents and recognisable airlines. Options that can then be filtered down to find the best fit. That is what momondo does. We make finding flights to Philadelphia quick and easy, saving you time and money.

Can I find flights from Washington to Philadelphia with flexible booking policies on momondo?

Yes. momondo enables you to select and highlight flights to Philadelphia from Washington with this policy.

How can momondo help me find flights from Washington to Philadelphia?

Once you have performed a search for Washington to Philadelphia flights, momondo helps you find the right one by offering useful filters to narrow down your flight selection. Flights can be filtered by multiple factors such as airline, airport and price; but also by other criteria like aircraft type and payment method.

I’m not ready to book a flight from Washington to Philadelphia right now. Can momondo alert me if prices change?

Yes momondo offers price alerts on flights to Philadelphia from Washington. After performing a search on this page you should be able to see the price alert set up feature. Simply provide a valid email address and momondo will instantly alert you when prices change.

An easier way to manage your Philadelphia trip

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Cheap flights from Washington to Philadelphia from $146

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Washington to Philadelphia departing on 11/6. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.

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Find the cheapest flights from Washington to Philadelphia

Cheap round-trip flights

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American Airlines flights from State of Washington to Philadelphia

Our best American Airlines deals on State of Washington to Philadelphia flight tickets

United Airlines flights from State of Washington to Philadelphia

Our best United Airlines deals on State of Washington to Philadelphia flight tickets

momondo Fare Finder

Use the filters below to find and compare flights from Washington to Philadelphia that are best for you.

See travel insights to Philadelphia from

How to get the cheapest flight ticket from State of Washington to Philadelphia

Look no further. We've gone through all the searches for this route on momondo so you have the important information and insights to find the cheapest flight ticket for your trip

What is the cheapest month to fly to Philadelphia?

What is the cheapest day to depart on your flight to Philadelphia?

What is the cheapest time of day to depart on your flight to Philadelphia?

What is the cheapest Washington to Philadelphia flight route?

Fly from Seattle/Tacoma Intl to Philadelphia for the best Washington - Philadelphia flight prices

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

What cabin class options are available on Washington to Philadelphia flights?

There are 4 cabin classes available to choose from on Washington to Philadelphia flights. Cabin price and availability will vary by airline so perform a search above to find the right deals for you.

Can stopping save me money on State of Washington to Philadelphia flights?

No. A direct flight is the cheapest option for a flight between State of Washington to Philadelphia.

What is the cheapest airline that flies from Washington to Philadelphia?

Frontier, Alaska Airlines, and United Airlines are the most popular carriers operating from Washington to Philadelphia

What airlines fly to Philadelphia?

How many flights depart from State of Washington to Philadelphia on average per day?

9 flights are operational daily from State of Washington to Philadelphia as of September 2025. The most popular departure time for this route is 7:00AM, with 61% of flights per day taking off at noon.

How many flights depart from State of Washington to Philadelphia on average per week?

As of September 2025, there are 64 flights per week flying from State of Washington to Philadelphia. The most common day of the week flights depart is Mon, with 17% of flights taking off on this day.

How long does it take to fly to Philadelphia?

If you’re flying from a popular airport in State of Washington, such as Seattle or Spokane, and flying into Philadelphia, then you can expect flight times to average 5h 15m and 6h 33m, respectively.

Cheap State of Washington to Philadelphia flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from State of Washington to Philadelphia

Best Price Found

Fastest flight time

Direct flights

Airports in Philadelphia

When did momondo last update prices for flights from Washington to Philadelphia Airport?

How many operators does momondo search for flights from Washington to Philadelphia Airport?

How old do you have to be to fly from Washington to Philadelphia Airport?

What documentation or ID do you need to fly to Philadelphia Airport?

What is the most popular plane model from State of Washington to Philadelphia?

Best airlines flying from State of Washington to Philadelphia

Compare and see reviews for airlines that fly from State of Washington to Philadelphia with momondo

Traveling to a place near Philadelphia?

Why use momondo?

Why should I use momondo to find a flight deal from Washington to Philadelphia?

Can I find flights from Washington to Philadelphia with flexible booking policies on momondo?

How can momondo help me find flights from Washington to Philadelphia?

I’m not ready to book a flight from Washington to Philadelphia right now. Can momondo alert me if prices change?

An easier way to manage your Philadelphia trip

We make it super easy to schedule, organize and travel with friends or family. Trips is free — and available to use no matter where you book.

Get notified when prices go down

Daily price changes in your inbox - only with Price Alerts.

Find better results for your trip to the United States

Airports servicing Pennsylvania