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 52% 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.

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 13m and 6h 20m, respectively.

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

Delta, United Airlines, and Southwest 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 March 2026, there are 7 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.

$82 Cheap Flights from Washington to Philadelphia in 2026

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

As of March 2026, there are 32 flights per week flying from State of Washington to Philadelphia. The most common day of the week flights depart is Tue, with 19% of flights taking off on this day.

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

4 flights are operational daily from State of Washington to Philadelphia as of March 2026. The most popular departure time for this route is 9:00AM, with 50% of flights per day taking off at noon.

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Find the cheapest flights from Washington to Philadelphia

Round-trip

One-way

Last minute

Direct

Cheap round-trip flights

Enter your travel dates to find the best prices.

7:12 pm - 5:34 am

SEA

PHL

31h 22m

1 stop

8:31 pm - 9:27 am

PHL

SEA

15h 56m

1 stop

$277Frontier

Tue, Apr 21 - Wed, Apr 29

7:12 pm - 12:54 am

SEA

PHL

26h 42m

2 stops

8:35 pm - 9:49 am

PHL

SEA

16h 14m

1 stop

$278Frontier

Tue, Apr 14 - Fri, May 15

4:20 pm - 5:34 am

SEA

PHL

10h 14m

1 stop

8:36 pm - 9:27 am

PHL

SEA

15h 51m

1 stop

$279Frontier

Thu, Apr 23 - Tue, Apr 28

7:46 pm - 7:53 pm

PDX

PHL

21h 07m

2 stops

8:41 pm - 11:38 am

PHL

PDX

17h 57m

1 stop

$283Multiple Airlines

Sun, Apr 12 - Tue, Apr 14

9:55 pm - 6:05 am

SEA

PHL

5h 10mnonstop

8:41 pm - 9:27 am

PHL

SEA

15h 46m

1 stop

$284Multiple Airlines

Mon, Apr 13 - Mon, Apr 20

5:30 pm - 5:37 am

PSC

PHL

9h 07m

1 stop

7:10 am - 11:46 am

PHL

PSC

7h 36m

1 stop

$297Delta

Sat, May 9 - Tue, May 12

7:15 pm - 5:41 am

GEG

PHL

7h 26m

1 stop

5:30 am - 11:41 am

PHL

GEG

9h 11m

1 stop

$297Delta

Tue, Apr 7 - Wed, Apr 15

1:21 pm - 6:02 am

PSC

PHL

13h 41m

1 stop

7:22 am - 12:44 pm

PHL

PSC

8h 22m

1 stop

$357Alaska Airlines

Tue, Apr 28 - Tue, May 5

1:22 pm - 11:59 pm

GEG

PHL

7h 37m

1 stop

8:40 am - 2:19 pm

PHL

GEG

8h 39m

1 stop

$357American Airlines

Wed, Apr 22 - Wed, Apr 29

1:57 pm - 6:02 am

YKM

PHL

13h 05m

1 stop

7:22 am - 1:20 pm

PHL

YKM

8h 58m

1 stop

$436Alaska Airlines

Sat, May 2 - Wed, May 6

Frontier flights from State of Washington to Philadelphia

Our best Frontier deals on State of Washington to Philadelphia flight tickets

Frontier

Apr 21

SEA7:12 pmSeattle/Tacoma Intl

31h 22m

1 stop

PHL5:34 amPhiladelphia

Apr 29

PHL8:31 pmPhiladelphia

15h 56m

1 stop

SEA9:27 amSeattle/Tacoma Intl

$277

Frontier

Apr 14

SEA7:12 pmSeattle/Tacoma Intl

26h 42m

2 stops

PHL12:54 amPhiladelphia

May 15

PHL8:35 pmPhiladelphia

16h 14m

1 stop

SEA9:49 amSeattle/Tacoma Intl

$278

Frontier

Apr 22

PDX12:38 pmPortland

19h 15m

2 stops

PHL10:53 amPhiladelphia

Apr 28

PHL8:36 pmPhiladelphia

18h 16m

1 stop

PDX11:52 amPortland

$279

Alaska Airlines flights from State of Washington to Philadelphia

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

Alaska Airlines

Apr 17

SEA9:55 pmSeattle/Tacoma Intl

5h 10m

PHL6:05 amPhiladelphia

Apr 27

PHL6:58 pmPhiladelphia

6h 04m

SEA10:02 pmSeattle/Tacoma Intl

$297

Alaska Airlines

Apr 8

SEA9:55 pmSeattle/Tacoma Intl

5h 10m

PHL6:05 amPhiladelphia

Apr 15

PHL7:25 amPhiladelphia

6h 05m

SEA10:30 amSeattle/Tacoma Intl

$327

Alaska Airlines

Apr 28

PSC1:21 pmPasco Tri Cities

13h 41m

1 stop

PHL6:02 amPhiladelphia

May 5

PHL7:22 amPhiladelphia

8h 22m

1 stop

PSC12:44 pmPasco Tri Cities

$357

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

Cheapest round-trip

SeattlePhiladelphia

SEA - PHL

SEAPHL

Seattle/Tacoma Intl

Tue 4/21

7:12 pm-5:34 am

1 stop31h 22m

Philadelphia

Wed 4/29

8:31 pm-9:27 am

1 stop15h 56m

$277

SeattlePhiladelphia

SEA - PHL

SEAPHL

Seattle/Tacoma Intl

Tue 4/14

7:12 pm-12:54 am

2 stops26h 42m

Philadelphia

Fri 5/15

8:35 pm-9:49 am

1 stop16h 14m

$278

SeattlePhiladelphia

SEA - PHL

SEAPHL

Seattle/Tacoma Intl

Thu 4/23

4:20 pm-5:34 am

1 stop10h 14m

Philadelphia

Tue 4/28

8:36 pm-9:27 am

1 stop15h 51m

$279

PortlandPhiladelphia

PDX - PHL

PDXPHL

Portland

Sun 4/12

7:46 pm-7:53 pm

2 stops21h 07m

Philadelphia

Tue 4/14

8:41 pm-11:38 am

1 stop17h 57m

$283

SeattlePhiladelphia

SEA - PHL

SEAPHL

Seattle/Tacoma Intl

Mon 4/13

9:55 pm-6:05 am

Nonstop5h 10m

Philadelphia

Mon 4/20

8:41 pm-9:27 am

1 stop15h 46m

$284

PascoPhiladelphia

PSC - PHL

PSCPHL

Pasco Tri Cities

Sat 5/9

5:30 pm-5:37 am

1 stop9h 07m

Philadelphia

Tue 5/12

7:10 am-11:46 am

1 stop7h 36m

$297

SpokanePhiladelphia

GEG - PHL

GEGPHL

Spokane

Tue 4/7

7:15 pm-5:41 am

1 stop7h 26m

Philadelphia

Wed 4/15

5:30 am-11:41 am

1 stop9h 11m

$297

PascoPhiladelphia

PSC - PHL

PSCPHL

Pasco Tri Cities

Tue 4/28

1:21 pm-6:02 am

1 stop13h 41m

Philadelphia

Tue 5/5

7:22 am-12:44 pm

1 stop8h 22m

$357

Quickest round-trip

SpokanePhiladelphia

GEG - PHL

GEGPHL

Spokane

Wed 4/22

1:22 pm-11:59 pm

1 stop7h 37m

Philadelphia

Wed 4/29

8:40 am-2:19 pm

1 stop8h 39m

$357

YakimaPhiladelphia

YKM - PHL

YKMPHL

Yakima Air Terminal

Sat 5/2

1:57 pm-6:02 am

1 stop13h 05m

Philadelphia

Wed 5/6

7:22 am-1:20 pm

1 stop8h 58m

$436

Flights are sorted by cheapest round-trip flights first.

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 October. Flight prices, which tend to average around $327, 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 $337.

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 Tuesday. Travelers who choose to depart for Philadelphia on a Tuesday will often find tickets for as low as $446. 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 $563.

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 in the evening. momondo users have found flights departing from State of Washington to Philadelphia in the evening for as low as $441. 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 $412 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 $355 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	$208
Fastest flight time	5h 05m
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 $208. The best round-trip flight deal from State of Washington to Philadelphia found on momondo in the last 72 hours is $373.

The fastest flight from State of Washington to Philadelphia takes 5h 05m

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

There is 1 airport in Philadelphia. From State of Washington there are direct flights to 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 March 2026, there are 7 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 Airbus A321-100/200, making up 33.41% of the total bookings. Other popular models include Airbus A321neo with 30.59%, Boeing 737 MAX 9 with 11.29%, and Boeing 737-900 Passenger/BBJ3 (winglets) with 5.88%.

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
Frontier	PriceFrom $139	Free Cancellation	Rating 5.7 3,022 reviews	Search Frontier flights
Delta	PriceFrom $148	Free Cancellation	Rating 7.9 8,313 reviews	Search Delta flights
United Airlines	PriceFrom $206	Free Cancellation	Rating 7.4 9,452 reviews	Search United Airlines flights
Hawaiian Airlines	PriceFrom $223	Free Cancellation	Rating 7.8 2,841 reviews	Search Hawaiian Airlines flights
American Airlines	PriceFrom $257	Free Cancellation	Rating 7.1 11,488 reviews	Search American Airlines flights
Alaska Airlines	PriceFrom $258	Free Cancellation	Rating 7.9 12,091 reviews	Search Alaska Airlines flights
Southwest	PriceFrom $295	Free Cancellation	Rating 8.0 4,325 reviews	Search Southwest flights

Wildwood

Cape May

Rehoboth Beach

Wildwood Crest

Ocean City

Cherry Hill

King of Prussia

Newark

Dewey Beach

Reading

Avalon

North Wildwood

Dover

Lewes

Stone Harbor

Essington

New Castle

Vineland

Pottstown

Somers Point

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.