How do most travelers feel about Delta?

Cheapflights users who travel with Delta (a popular airline from Philadelphia to Seattle) have rated them a 7.6/10. This rating comes from 4,365 reviews. If you are looking to travel PHL-SEA, search your dates above.

Can I get a flight from Philadelphia to Seattle on Delta for under $500?

Cheapflights users have found 1 Delta flights for under $500 on the PHL-SEA route. Prices on flights to Seattle from Philadelphia can vary based on many factors including dates. To look at price based on your preferred dates, click here.

How far ahead should I book a flight from Philadelphia to Seattle with Delta?

Booking with Delta 36 days in advance of your planned departure date is, on average, the best time to get cheap flights from Philadelphia to Seattle. The general trend is that the closer you book to the departure date, the more expensive your flight will be.

What is the cheapest month to book a flight from Philadelphia to Seattle with Delta?

Currently, the most affordable month to book a Delta flight from Philadelphia to Seattle in January, with an average price of $247. Conversely, traveling with Delta from Philadelphia to Seattle in July will be the most expensive, with an average cost of $406. Various factors influence flight prices, so comparing airlines, departure airports, and times can help reduce costs.

In terms of precipitation, rainfall in Seattle ranges from 0.7 - 6.6 inches per month. November is typically the wettest month, when rainfall can reach 6.6 in. July is typically the driest time to visit Seattle when rainfall is around 0.7 in.

Fly Delta from PHL to SEA as low as $153

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Cheapflights users flying from Philadelphia to Seattle on Delta typically fly into Seattle/Tacoma Intl and depart from Philadelphia. Select your dates above for pricing.

Delta flights from Philadelphia to Seattle in 2024

Popular in	July
Cheapest in	October
Average price (all airlines)	$431
One-way from	$153
Round-trip from	$306

Highest demand for flights from Philadelphia to Seattle/Tacoma Intl; 21% potential price increase.

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Best time to find cheap flights from Philadelphia to Seattle/Tacoma Intl; 3% potential price drop.

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Average price for all Philadelphia to Seattle/Tacoma Intl flights (one-way and round-trip).

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Cheapest one-way Delta flight from Philadelphia to Seattle/Tacoma Intl

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Cheapest round-trip Delta flight from Philadelphia to Seattle/Tacoma Intl

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Can I get a flight from Philadelphia to Seattle on Delta for under $500?
Cheapflights users have found 1 Delta flights for under $500 on the PHL-SEA route. Prices on flights to Seattle from Philadelphia can vary based on many factors including dates. To look at price based on your preferred dates, click here.
How do most travelers feel about Delta?
Cheapflights users who travel with Delta (a popular airline from Philadelphia to Seattle) have rated them a 7.6/10. This rating comes from 4,365 reviews. If you are looking to travel PHL-SEA, search your dates above.

Cheapest Delta flights from Philadelphia to Seattle

Tue 6/184:46 pmPHL - SEA

1 stop8h 38mDelta

Mon 7/812:35 amSEA - PHL

1 stop7h 02mDelta

Deal found 5/29$421

Pick Dates

Wed 6/266:00 amPHL - SEA

1 stop7h 25mDelta

Tue 7/912:35 amSEA - PHL

1 stop7h 02mDelta

Deal found 5/30$522

Pick Dates

Tue 6/113:05 pmPHL - SEA

1 stop8h 32mDelta

Wed 6/1212:40 amSEA - PHL

1 stop6h 56mDelta

Deal found 5/28$580

Pick Dates

Last minute deals on Cheapflights

Fri 6/76:52 pmPHL - SEA

1 stop8h 03mDelta

Thu 6/1312:40 amSEA - PHL

1 stop6h 56mDelta

Deal found 5/30$631

Pick Dates

Fri 6/76:26 pmPHL - SEA

1 stop8h 33mDelta

Thu 6/1312:40 amSEA - PHL

1 stop6h 56mDelta

Deal found 5/29$682

Pick Dates

Sun 6/96:00 amPHL - SEA

1 stop7h 45mDelta

Tue 6/1112:40 amSEA - PHL

1 stop6h 56mDelta

Deal found 5/29$699

Pick Dates

One-way Delta flights to Seattle from Philadelphia

Sat 8/315:00 pmPHL - SEA

1 stop9h 53mDelta

Deal found 5/29$153

Pick Dates

Thu 8/156:33 pmPHL - SEA

1 stop8h 24mDelta

Deal found 5/28$603

Pick Dates

Best time to book a flight from Philadelphia to Seattle

Have a flexible travel schedule? Discover the best time to fly to Seattle from Philadelphia with our price prediction graph.

Estimated round-trip price

Temperature and rainfall in Seattle by month

SEA Temperature	41 - 66.2 °F

SEA

Temperature

41 - 66.2 °F

If weather is an important factor for your trip to Seattle, use this chart to help with planning. For those seeking warmer temperatures, July is the ideal time of year to visit, when temperatures reach an average of 66.2 F. Travelers looking to avoid the cold should look outside of December, when temperatures are typically at their lowest (around 41.0 F).

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Fly from Philadelphia to Seattle on another airline
Consider alternative airlines that service the Seattle area. Flight routes are based on user searches made on Cheapflights and were last updated on May 30, 2024.

American Airlines flights from Philadelphia to Seattle/Tacoma Intl

Complete your trip
Complete your trip to Seattle by adding a car rental and/or hotel reservation to your travel itinerary.

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Other popular destinations in North America
If Seattle is not for you, choose from these other destinations located in North America. Flight routes are based on user searches made on Cheapflights and were last updated on May 30, 2024.

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Popular flights with Delta
Browse through some of the most popular routes that Delta offers at this time. Flights are based on user searches made on Cheapflights and were last updated on May 30, 2024.

Delta flights from Philadelphia to Los Angeles

Delta flights from Philadelphia to Atlanta

Delta flights from Philadelphia to Sky Harbor Intl

Delta flights from Philadelphia to Atlanta

Delta flights from Philadelphia to Seattle

Delta flights from Philadelphia to Los Angeles

Delta flights from Philadelphia to Seattle

Delta flights from Philadelphia to Los Angeles

Delta flights from Philadelphia to Atlanta

Delta flights from Philadelphia to Los Angeles

Delta flights from Philadelphia to Sky Harbor Intl

Delta flights from Philadelphia to Los Angeles

Delta flights from Philadelphia to Sky Harbor Intl

Delta flights from Philadelphia to Los Angeles

Delta flights from Philadelphia to Seattle

Delta flights from Philadelphia to Atlanta

See what others are saying about Delta

Delta

8.0

Very good

10,457 reviews

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Overview

Recent reviews

3.9

Poor|Oct 2021

There were complications with my flights boarding in spokane and my secondary flight was changed without my consent to one that boarded at the same time as my first flight let me out on the opposite side of the massivr layover airport. It was only because an employee saw my struggle and confusion and hooked me up with a ride that I even made the flight dispite delta's best efforts. My TV's headphone jack on my first flight was also busted which sucked to find out after buying headphones on the flight. About halfway through the flight one of the attendants moved me to a seat with a working TV. Long story short Delta as an airline was terrible but their employees did their best to help me with what limited options they had to work with.

6.0

Okay|Apr 2022

No entertainment, five hour flight and choice of pretzels or a cookie. Still a place to put your cigarette in the restroom on board. How old is the plane?

5.9

Fair|Oct 2021

The staff was the highlight. Only thing that could have been better was the temperature on the flight from Hawaii to Seattle. The plane was too cold to get comfortable

10.0

Wonderful|Aug 2021

No complaints!!

2.0

Poor|Oct 2021

I never took this flight and was never able to cancel it in Kayak’s system! I will never book through Kayak again. The flight was probably fine. Next time I will only book with the airline directly. I would caution anyone else to do the same.

1 out of 3486

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Cheapflights users flying from Philadelphia to Seattle on Delta typically fly into Seattle/Tacoma Intl and depart from Philadelphia. Select your dates above for pricing.

Delta flights from Philadelphia to Seattle in 2024

Find detailed information about Delta flights from Philadelphia to Seattle. Explore the options provided by Delta to plan your journey from Philadelphia to Seattle. Data last updated May 30, 2024.

Popular in

Cheapest in

Average price (all airlines)

One-way from

Round-trip from

Can I get a flight from Philadelphia to Seattle on Delta for under $500?

How do most travelers feel about Delta?

Cheapest Delta flights from Philadelphia to Seattle

Last minute deals on Cheapflights

One-way Delta flights to Seattle from Philadelphia

Best time to book a flight from Philadelphia to Seattle

Have a flexible travel schedule? Discover the best time to fly to Seattle from Philadelphia with our price prediction graph.

Temperature and rainfall in Seattle by month

Plan your trip to Seattle by taking into account the average temperature and rainfall totals by month.

Browse thousands of different options on Cheapflights for your next trip

Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.

Fly from Philadelphia to Seattle on another airline
Consider alternative airlines that service the Seattle area. Flight routes are based on user searches made on Cheapflights and were last updated on May 30, 2024.

Consider alternative airlines that service the Seattle area. Flight routes are based on user searches made on Cheapflights and were last updated on May 30, 2024.

Other Delta flights from Philadelphia
Browse through other Delta flights departing from Philadelphia. Flight routes are based on user searches made on Cheapflights and were last updated on May 30, 2024.

Browse through other Delta flights departing from Philadelphia. Flight routes are based on user searches made on Cheapflights and were last updated on May 30, 2024.

Complete your trip
Complete your trip to Seattle by adding a car rental and/or hotel reservation to your travel itinerary.

Complete your trip to Seattle by adding a car rental and/or hotel reservation to your travel itinerary.

Other airlines servicing Philadelphia and Seattle
Choose from other airlines serving Philadelphia and Seattle.

Choose from other airlines serving Philadelphia and Seattle.

Other popular destinations in North America
If Seattle is not for you, choose from these other destinations located in North America. Flight routes are based on user searches made on Cheapflights and were last updated on May 30, 2024.

If Seattle is not for you, choose from these other destinations located in North America. Flight routes are based on user searches made on Cheapflights and were last updated on May 30, 2024.

Popular flights with Delta
Browse through some of the most popular routes that Delta offers at this time. Flights are based on user searches made on Cheapflights and were last updated on May 30, 2024.

Browse through some of the most popular routes that Delta offers at this time. Flights are based on user searches made on Cheapflights and were last updated on May 30, 2024.

See what others are saying about Delta

Overview

Recent reviews

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Flights

Delta flights from Philadelphia to Seattle (PHL - SEA)

Cheapflights users flying from Philadelphia to Seattle on Delta typically fly into Seattle/Tacoma Intl and depart from Philadelphia. Select your dates above for pricing.

Delta flights from Philadelphia to Seattle in 2024

Find detailed information about Delta flights from Philadelphia to Seattle. Explore the options provided by Delta to plan your journey from Philadelphia to Seattle. Data last updated May 30, 2024.

Popular in

Cheapest in

Average price (all airlines)

One-way from

Round-trip from

Can I get a flight from Philadelphia to Seattle on Delta for under $500?

How do most travelers feel about Delta?

Cheapest Delta flights from Philadelphia to Seattle

Last minute deals on Cheapflights

One-way Delta flights to Seattle from Philadelphia

Best time to book a flight from Philadelphia to Seattle

Have a flexible travel schedule? Discover the best time to fly to Seattle from Philadelphia with our price prediction graph.

Temperature and rainfall in Seattle by month

Plan your trip to Seattle by taking into account the average temperature and rainfall totals by month.

Browse thousands of different options on Cheapflights for your next trip

Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.

Fly from Philadelphia to Seattle on another airlineConsider alternative airlines that service the Seattle area. Flight routes are based on user searches made on Cheapflights and were last updated on May 30, 2024.

Consider alternative airlines that service the Seattle area. Flight routes are based on user searches made on Cheapflights and were last updated on May 30, 2024.

See what others are saying about Delta

Overview

100% Free

Book with Flexibility

Travel Smart

Fly from Philadelphia to Seattle on another airline
Consider alternative airlines that service the Seattle area. Flight routes are based on user searches made on Cheapflights and were last updated on May 30, 2024.