Cheap Delta flights from Seattle to Philadelphia (SEA to PHL)

Find The Best Day To Fly from Seattle to Philadelphia

Amazing Delta SEA to PHL Flight Deals

The cheapest flights to Philadelphia Intl. found within the past 7 days were $297 round trip and one way. Prices and availability subject to change. Additional terms may apply.

Wed, Nov 5 - Mon, Nov 10
SEA
Seattle
PHL
Philadelphia
$297 Roundtrip, found 1 hour ago
$297
Roundtrip
found 1 hour ago
Select Delta flight, departing Wed, Nov 5 from Seattle to Philadelphia, returning Mon, Nov 10, priced at $297 found 1 hour ago
Fri, Oct 24 - Sun, Nov 9
SEA
Seattle
PHL
Philadelphia
$301 Roundtrip, found 2 days ago
$301
Roundtrip
found 2 days ago
Select Delta flight, departing Fri, Oct 24 from Seattle to Philadelphia, returning Sun, Nov 9, priced at $301 found 2 days ago
Thu, Aug 14 - Fri, Aug 22
SEA
Seattle
PHL
Philadelphia
$307 Roundtrip, found 3 days ago
$307
Roundtrip
found 3 days ago
Select Delta flight, departing Thu, Aug 14 from Seattle to Philadelphia, returning Fri, Aug 22, priced at $307 found 3 days ago

Frequently asked questions

Can I catch a flight from SEA to Philadelphia Intl. Airport (PHL) right now?
Ensure you visit our Covid-19 Travel Advisor to find out if there are any present travel advice reports or quarantine requirements in effect in PHL when flying from Seattle - Tacoma Intl. Airport (SEA).
What terminal is Delta Air Lines at Sea-Tac Airport?
If you're flying with Delta Air Lines from Sea-Tac Airport to Philadelphia Airport, you might be able to find out the terminal information once you're issued with your ticket. If not, consult your airline.
Are there Delta Air Lines non-stop flights from SEA to PHL?
As you can't go nonstop from Sea-Tac Airport to Philadelphia Airport with Delta Air Lines, make the most of your stopover. Grab a few drinks at an inviting airport bar, or stroll around the terminal and enjoy a little retail therapy.
How long is a Delta Air Lines flight from SEA to PHL?
Bring that book you've been meaning to read. A flight from Seattle - Tacoma Intl. Airport (SEA) to Philadelphia Intl. Airport (PHL) with Delta Air Lines takes roughly 6 hours and 49 minutes. You'll have enough time to lose yourself in the gripping storyline.
How many direct and indirect flights does Delta Air Lines fly from SEA to PHL?
You can decide between approximately 6 flights daily with Delta Air Lines from Sea-Tac Airport to PHL.
If I am not able to travel due to COVID-19, can I change my booking to a later date?
For more info about changing your flight to Philadelphia Airport, please visit our Customer Service Portal.
What is the best day to buy a plane ticket?
This just in! Airfares offered on Thursdays tend to be the cheapest, according to flight demand on Travelocity in 2021. Tuesday and Wednesday prices are also good, but you may want to prepare your budget if booking during the weekend, as data shows that is when prices are generally at their highest.
What are the cheapest days to fly?
Frequent travelers may already know this, but earlier in the week can be the cheapest time to fly. In 2021, flights departing on a Monday were generally the cheapest of the week, whereas you may pay a premium for weekend flights when demand is usually high. On average, tickets were most expensive for Saturday departures, so if you need to fly out on a weekend, you might look for deals ahead of time.
How far in advance can you book a flight?
Trying to figure out how early you should book your flight? It's possible to start comparing international airfares on Travelocity up to 12 months in advance. However, it does depend on the carrier as not all airlines release their prices that far out. According to our 2021 flight demand trends, last minute planners can still bag a bargain with some of the cheapest fares appearing 0-2 weeks prior to their travel dates.*According to flight demand on Travelocity.com from January to December 2021. Savings are subject to change based on departure location, date and destination.

Discover our best Delta flight from Seattle SEA to Philadelphia PHL 

To find the best deals on flights to Seattle from Philadelphia with Delta, just enter your travel dates, filter by Delta, and hit search. You’ll find flights to choose from and can sort by price, flight duration, and arrival or departure time.  

 

Return flights from Seattle SEA to Philadelphia PHL with Delta 

If you’re planning a round trip, booking return flights with Delta is usually the most cost-effective option. With airfares ranging from $297 to $307, it’s easy to find a flight that suits your budget. Prices and availability subject to change. Additional terms may apply. 

 

Book one-way Delta flights from Seattle SEA to Philadelphia PHL 

A one-way ticket gives you much greater flexibility—allowing you to choose your return date, destination, and time whenever you’re ready. By booking in advance you can find great deals on one-way tickets too. Right now, a one-way Delta flight from Seattle to Philadelphia costs from . Prices and availability subject to change. Additional terms may apply. 

 

The easy way to find cheap flights to Philadelphia PHL from  Seattle SEA with Delta 

To find a cheap Delta flight from Seattle SEA to Philadelphia PHL, sort your search results by price or filter by budget. Thanks to Travelocity’s Price Match Promise, if you find a better airfare deal anywhere else within 24 hours, we’ll credit or refund the difference. 

 

How to find our best airfare deals on Delta flights from Seattle SEA to Philadelphia PHL 

If you’re looking for cheap flights, it helps to be flexible when it comes to your travel dates. You’ll usually find lower cost tickets when you travel during quieter months such as November, or if you book a flight with a stopover. 

 

Find nonstop flights from Seattle SEA to Philadelphia PHL with Delta 

If you’re keen to be on Philadelphia soil fast, don’t waste time with a stopover—filter your search results to show direct Delta flights only. The journey takes around hour(s) min(s) – so you’ll be there before you know it. 

 

Flexible airline tickets for Delta flights from Seattle SEA to Philadelphia PHL 

Make sure you’re not out of pocket if plans change by choosing a flexible ticket with penalty-free amendment and cancellation options. Use our ‘no change fee’ filter to see which flights have this option.  

 

There are a lot of reasons to book your flights to Philadelphia PHL from  Seattle SEA with Delta on Travelocity 

At Travelocity our vast and up-to-the-minute inventory puts all of our best flight deals in one place. So, whether you’re traveling on business or jetting off with friends and family, you can trust Travelocity to get you there.

Delta Airports
Hop on a(n) Delta flight today by flying to many destinations out of these domestic and international airports:
Airport code
Country
Airport name
Number of flights
ATLUSAHartsfield-Jackson Atlanta Intl.252
DTWUSADetroit Metropolitan Wayne County156
MSPUSAMinneapolis - St. Paul Intl.131
SLCUSASalt Lake City Intl.116
SEAUSASeattle - Tacoma Intl.57
LAXUSALos Angeles Intl.41
AMSNLDSchiphol31
YYCCANCalgary Intl.26
YYZCANPearson Intl.24
JFKUSAJohn F. Kennedy Intl.23

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