Vuelos de Delta de Filadelfia (PHL) a Seattle (SEA) desde $173

It’s wise to learn about any quarantine requirements and travel advice reports in effect in your destination. Ensure you check out our Covid-19 Travel Advisor for up-to-date information on catching a flight to Seattle - Tacoma Intl. Airport (SEA) from Philadelphia Airport.

You should find out exactly which terminal Delta Air Lines leaves from at Philadelphia Intl. Airport (PHL) once you’ve seen your boarding pass. The same can be said for information regarding your arrival at Sea-Tac Airport. If you can’t locate those details, get in touch with your airline.

Expect to make a stopover when traveling from Philadelphia Airport to Sea-Tac Airport, as Delta Air Lines doesn’t offer nonstop flights on this route. While waiting for your connection, you might like to buy a newly published novel or your favorite magazine from the airport bookstore to help pass the time.

Bring that novel on board you haven’t had time to read. A flight from PHL to SEA with Delta Air Lines takes roughly 7 hours and 52 minutes. You’ll have enough time to immerse yourself in the plot.

If you need to book a journey from PHL to SEA, you can select from 6 Delta Air Lines flights every day.

For more info about changing your flight to Seattle - Tacoma Intl. Airport (SEA), please visit our Customer Service Portal.

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.

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.

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.