What airlines fly to State of Washington?

Alaska Airlines, United Airlines and American Airlines are the top three most popular airlines that fly to State of Washington from Philadelphia according to our data. Alaska Airlines is the first choice among our users, with 43% of people opting to fly with this airline when traveling to State of Washington. Keep in mind that there are 10 different airlines that fly to State of Washington on a routine basis, so you have a few additional options to choose from.

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

Delta, American Airlines, and United Airlines are the most popular carriers operating from Philadelphia to Washington

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

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

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

The number of operators available for flights from Philadelphia Airport to Washington is 7 as of April 2026.

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

The minimum age for a child to fly alone is five, but airlines offering an unaccompanied minor (UNMR) service may have their age restrictions, such as regulations concerning flight duration, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from Philadelphia Airport to Washington.

What documentation or ID do you need to fly to Washington?

The travel and health documents required for your trip to Washington can vary based on your itinerary and personal situation. As a rule, consider having multiple documents such as a national ID card or driver’s license, and a passport valid for six-months after you plan to arrive at Washington. We always recommend checking with your airline or a trusted third party such as IATA to get advice.

$100 Cheap Flights from Philadelphia to Washington in 2026

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

38 flights are operational weekly from Philadelphia to State of Washington as of April 2026. The most popular departure day for this route is Sat, with 21% of flights per week taking off on this day.

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

The number of flights available between Philadelphia and State of Washington is 5 per day as of April 2026. The most frequent departure time is 6:00PM, with 60% of daily flights leaving in the evening.

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Find the cheapest flights from Philadelphia to Washington

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One-way

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Cheap round-trip flights

Enter your travel dates to find the best prices.

8:35 pm - 11:38 am

PHL

GEG

18h 03m

1 stop

12:33 pm - 5:37 am

GEG

PHL

14h 04m

1 stop

$206Frontier

Sun, May 10 - Mon, May 18

7:25 am - 12:01 pm

PHL

GEG

7h 36m

1 stop

4:30 pm - 5:45 am

GEG

PHL

10h 15m

1 stop

$279Delta

Wed, Jun 3 - Wed, Jun 10

5:17 am - 1:11 pm

PHL

GEG

10h 54m

2 stops

2:23 pm - 11:59 pm

GEG

PHL

6h 36m

1 stop

$284Delta

Wed, Jun 3 - Thu, Jun 11

6:00 am - 12:23 pm

PHL

GEG

9h 23m

1 stop

2:08 pm - 12:06 am

GEG

PHL

6h 58m

1 stop

$287American Airlines

Tue, May 19 - Sat, May 23

8:35 pm - 10:06 am

PHL

SEA

16h 31m

1 stop

7:50 pm - 12:40 am

SEA

PHL

25h 50m

2 stops

$289Frontier

Thu, May 28 - Wed, Jun 3

7:00 am - 9:52 am

PHL

SEA

29h 52m

2 stops

7:50 pm - 5:37 am

SEA

PHL

30h 47m

1 stop

$292Multiple Airlines

Thu, Apr 30 - Tue, May 5

6:43 am - 7:52 pm

PHL

SEA

16h 09m

1 stop

9:44 pm - 6:02 am

SEA

PHL

5h 18mnonstop

$294Multiple Airlines

Thu, Apr 30 - Fri, May 8

6:00 am - 12:23 pm

PHL

GEG

9h 23m

1 stop

2:08 pm - 12:06 am

GEG

PHL

6h 58m

1 stop

$296American Airlines

Tue, May 19 - Sat, May 23

7:16 pm - 12:14 am

PHL

PSC

7h 58m

1 stop

7:17 pm - 5:35 am

PSC

PHL

7h 18m

1 stop

$389Alaska Airlines

Fri, May 29 - Mon, Jun 1

7:16 pm - 12:07 am

PHL

BLI

7h 51m

1 stop

5:53 pm - 5:35 am

BLI

PHL

8h 42m

1 stop

$429Alaska Airlines

Thu, May 28 - Mon, Jun 1

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Frontier flights from Philadelphia to State of Washington

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

Frontier

May 10

PHL8:35 pmPhiladelphia

18h 03m

1 stop

GEG11:38 amSpokane

May 18

GEG12:33 pmSpokane

14h 04m

1 stop

PHL5:37 amPhiladelphia

$206

Frontier

May 28

PHL8:35 pmPhiladelphia

16h 31m

1 stop

SEA10:06 amSeattle/Tacoma Intl

Jun 3

SEA7:50 pmSeattle/Tacoma Intl

25h 50m

2 stops

PHL12:40 amPhiladelphia

$289

Frontier

May 28

PHL8:35 pmPhiladelphia

20h 26m

1 stop

SEA2:01 pmSeattle/Tacoma Intl

Jun 1

SEA7:50 pmSeattle/Tacoma Intl

17h 48m

2 stops

PHL4:38 pmPhiladelphia

$291

American Airlines flights from Philadelphia to State of Washington

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

American Airlines

May 19

PHL6:00 amPhiladelphia

9h 23m

1 stop

GEG12:23 pmSpokane

May 23

GEG2:08 pmSpokane

6h 58m

1 stop

PHL12:06 amPhiladelphia

$287

American Airlines

May 19

PHL6:00 amPhiladelphia

9h 23m

1 stop

GEG12:23 pmSpokane

May 23

GEG2:08 pmSpokane

6h 58m

1 stop

PHL12:06 amPhiladelphia

$296

American Airlines

May 21

PHL7:34 amPhiladelphia

8h 40m

1 stop

GEG1:14 pmSpokane

May 27

GEG2:08 pmSpokane

7h 23m

1 stop

PHL12:31 amPhiladelphia

$297

momondo Fare Finder

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

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Route

Depart

Return

Price

Cheapest round-trip

PhiladelphiaSpokane

PHL - GEG

PHLGEG

Philadelphia

Sun 5/10

8:35 pm-11:38 am

1 stop18h 03m

Spokane

Mon 5/18

12:33 pm-5:37 am

1 stop14h 04m

$206

PhiladelphiaSpokane

PHL - GEG

PHLGEG

Philadelphia

Wed 6/3

7:25 am-12:01 pm

1 stop7h 36m

Spokane

Wed 6/10

4:30 pm-5:45 am

1 stop10h 15m

$279

PhiladelphiaSpokane

PHL - GEG

PHLGEG

Philadelphia

Wed 6/3

5:17 am-1:11 pm

2 stops10h 54m

Spokane

Thu 6/11

2:23 pm-11:59 pm

1 stop6h 36m

$284

PhiladelphiaSpokane

PHL - GEG

PHLGEG

Philadelphia

Tue 5/19

6:00 am-12:23 pm

1 stop9h 23m

Spokane

Sat 5/23

2:08 pm-12:06 am

1 stop6h 58m

$287

PhiladelphiaSeattle

PHL - SEA

PHLSEA

Philadelphia

Thu 5/28

8:35 pm-10:06 am

1 stop16h 31m

Seattle/Tacoma Intl

Wed 6/3

7:50 pm-12:40 am

2 stops25h 50m

$289

PhiladelphiaSeattle

PHL - SEA

PHLSEA

Philadelphia

Thu 4/30

7:00 am-9:52 am

2 stops29h 52m

Seattle/Tacoma Intl

Tue 5/5

7:50 pm-5:37 am

1 stop30h 47m

$292

PhiladelphiaSeattle

PHL - SEA

PHLSEA

Philadelphia

Thu 4/30

6:43 am-7:52 pm

1 stop16h 09m

Seattle/Tacoma Intl

Fri 5/8

9:44 pm-6:02 am

Nonstop5h 18m

$294

PhiladelphiaSpokane

PHL - GEG

PHLGEG

Philadelphia

Tue 5/19

6:00 am-12:23 pm

1 stop9h 23m

Spokane

Sat 5/23

2:08 pm-12:06 am

1 stop6h 58m

$296

Quickest round-trip

PhiladelphiaPasco

PHL - PSC

PHLPSC

Philadelphia

Fri 5/29

7:16 pm-12:14 am

1 stop7h 58m

Pasco Tri Cities

Mon 6/1

7:17 pm-5:35 am

1 stop7h 18m

$389

PhiladelphiaBellingham

PHL - BLI

PHLBLI

Philadelphia

Thu 5/28

7:16 pm-12:07 am

1 stop7h 51m

Bellingham

Mon 6/1

5:53 pm-5:35 am

1 stop8h 42m

$429

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 Philadelphia to State of Washington

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 State of Washington?

The month of January is, on average, the cheapest month to fly to State of Washington from Philadelphia, with most prices found around $318. If you aren’t able to travel to State of Washington during the month of January, then flying in October is also cheap. Prices for this month can be found on momondo for an average of $322.

What is the cheapest day to depart on your flight to State of Washington?

The cheapest day to depart from Philadelphia to State of Washington is on a Wednesday. Travelers who choose to depart for State of Washington on a Wednesday will often find tickets for as low as $442. When flying out on a Sunday, the most expensive travel day of the week, you can expect to see flight prices from Philadelphia to State of Washington for around $553.

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

The cheapest time of day to fly to State of Washington is in the evening when flights can be purchased for as low as $454. If you have a flexible travel schedule, then try to avoid flying in the morning when prices are $482 on average. Flights to State of Washington from Philadelphia in the morning are generally more expensive because this time of day is more convenient for travelers’ schedules.

What is the cheapest Philadelphia to Washington flight route?

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

How far in advance should I book a flight to State of Washington?

You are more likely to see cheaper flights to State of Washington from Philadelphia when booking weeks ahead of your departure date. In general, you can expect to find flights to State of Washington for around $396 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to State of Washington from Philadelphia for as low as $357 on momondo.

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

There are 4 cabin classes available to choose from on Philadelphia to Washington 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 Philadelphia to State of Washington flights?

You could potentially save up to 1% on your flight if you consider stops on a Philadelphia to State of Washington flight.

Cheap Philadelphia to State of Washington flight deals and tips

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

Best Price Found	$222
Fastest flight time	5h 50m
Direct flights	Every day
Airports in State of Washington	96 airports

The best one-way flight to State of Washington from Philadelphia in the past 72 hours is $222. The best round-trip flight deal from Philadelphia to State of Washington found on momondo in the last 72 hours is $382.

The fastest flight from Philadelphia to State of Washington takes 5h 50m

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

There are 96 airports in State of Washington. From Philadelphia there are direct flights to Portland (PDX), Seattle/Tacoma Intl (SEA).

Search flight deals

Frequently asked questions about flying from Philadelphia to Washington

When did momondo last update prices for flights from Philadelphia Airport to Washington?
Prices for flights from Philadelphia Airport to Washington are updated daily.
How many operators does momondo search for flights from Philadelphia Airport to Washington?
The number of operators available for flights from Philadelphia Airport to Washington is 7 as of April 2026.
How old do you have to be to fly from Philadelphia Airport to Washington?
The minimum age for a child to fly alone is five, but airlines offering an unaccompanied minor (UNMR) service may have their age restrictions, such as regulations concerning flight duration, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from Philadelphia Airport to Washington.
What documentation or ID do you need to fly to Washington?
The travel and health documents required for your trip to Washington can vary based on your itinerary and personal situation. As a rule, consider having multiple documents such as a national ID card or driver’s license, and a passport valid for six-months after you plan to arrive at Washington. We always recommend checking with your airline or a trusted third party such as IATA to get advice.
What is the most popular plane model from Philadelphia to State of Washington?
Based on momondo bookings for this flight route, the most popular plane model on flight routes from Philadelphia to State of Washington is Airbus A321neo (39.65% of total bookings). The next most popular plane models are Airbus A321-100/200 (39.37%), Boeing 737 MAX 9 (5.51%), and Boeing 737-900 Passenger/BBJ3 (winglets) (3.94%).

Best airlines flying from Philadelphia to State of Washington

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

Airline	Rating	Free Cancellation	Price
Spirit Airlines	PriceFrom $115	Free Cancellation	Rating 6.3 8,625 reviews	Search Spirit Airlines flights
Frontier	PriceFrom $130	Free Cancellation	Rating 5.7 2,986 reviews	Search Frontier flights
Hawaiian Airlines	PriceFrom $199	Free Cancellation	Rating 7.8 2,837 reviews	Search Hawaiian Airlines flights
Southwest	PriceFrom $203	Free Cancellation	Rating 8.0 4,328 reviews	Search Southwest flights
Delta	PriceFrom $229	Free Cancellation	Rating 7.9 8,422 reviews	Search Delta flights
Alaska Airlines	PriceFrom $247	Free Cancellation	Rating 7.9 12,261 reviews	Search Alaska Airlines flights
United Airlines	PriceFrom $258	Free Cancellation	Rating 7.4 9,605 reviews	Search United Airlines flights
American Airlines	PriceFrom $277	Free Cancellation	Rating 7.1 11,617 reviews	Search American Airlines flights

Why use momondo?

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

To find the flight that best suits your needs, momondo gathers a range of flights from a large pool of different airlines and agents; you can then use our insights and filters to find and book the right flight to Washington from Philadelphia.

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

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

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

momondo offers useful filters to help you find the right flight. Choose specific flight times, airports or even what payment method you prefer. We have numerous options to help you book your ideal flight from Philadelphia to Washington.

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

If you are not ready to book a flight from Philadelphia to Washington now, use our insights above to find helpful tips or alternatively set up a price alert, where momondo will track prices on flights to Washington and let you know when they change.

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Cheap flights from Philadelphia to Washington from $100

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Philadelphia to Washington departing on 4/30. 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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Frontier flights from Philadelphia to State of Washington

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

American Airlines flights from Philadelphia to State of Washington

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

momondo Fare Finder

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

See travel insights to Washington from

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

What is the cheapest month to fly to State of Washington?

What is the cheapest day to depart on your flight to State of Washington?

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

What is the cheapest Philadelphia to Washington flight route?

How far in advance should I book a flight to State of Washington?

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

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

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

What airlines fly to State of Washington?

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

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

Cheap Philadelphia to State of Washington flight deals and tips

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

Best Price Found

Fastest flight time

Direct flights

Airports in State of Washington

Frequently asked questions about flying from Philadelphia to Washington

Best airlines flying from Philadelphia to State of Washington

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

Why use momondo?

An easier way to manage your State of Washington 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 Washington

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