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Flights from Philadelphia to Seattle

Find cheap airlines flights from Philadelphia to Seattle

Choose from 2 carriers that fly from Philadelphia to Seattle, including Alaska Airlines, American Airlines, Enjoy the cheapest tickets on this route with American Airlines.
Alaska Airlines logo Alaska Airlines American Airlines logo American Airlines

Cheap flight deals from Philadelphia to Seattle

Non stop flight deals! Book direct flights from Philadelphia to Seattle: One way flights from $131, round trip flights from $258. Cheapest next 3 months.

Crossed out prices are calculated based on the average price of the corresponding route on Trip.com.

Flight Info | Philadelphia to Seattle

The distance between Philadelphia and Seattle is about 3,816.94 km. It takes around 6 hours 19 minutes on average to fly from Philadelphia to Seattle. The most popular month to Seattle is March. The off-season for travel is April.

Cheapest one-way flight price $108
Cheapest round-trip ticket price $218
Off-season for travel April
Peak season for travel March
Flight distance 3,816.94 km
Average flight time 6 hours 19 minutes
Popular airline Alaska Airlines

When is the cheapest time to fly from Philadelphia to Seattle?

The cheapest time for Philadelphia to Seattle flights: Jul 13 to Jul 20 — one way flight prices from $107.

Cheapest flights
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Displayed prices are calculated based on the cheapest average weekly prices of the corresponding route on Trip.com.

Frequently Asked Questions

  • When are flight tickets from Philadelphia (PHL) to Seattle (SEA) the cheapest?

    Airlines adjust prices for flights from Philadelphia to Seattle based on the departure date and time of your selection. By analyzing data from all airlines, we've discovered that on Trip.com, you can find the lowest flight prices on Tuesdays, Wednesdays, and Saturdays.

  • How much do flights from Philadelphia (PHL) to Seattle (SEA) cost?

    According to Trip.com's data, the lowest price is around $383.

  • How long does it take to fly from Philadelphia (PHL) to Seattle (SEA) and what is the distance?

    It takes around 6 hours 19 minutes to fly from Philadelphia (PHL) to Seattle (SEA).

  • What are the most popular airlines that fly from Philadelphia (PHL) to Seattle (SEA)?

    Airlines with flights from Philadelphia (PHL) to Seattle (SEA): Air Tahiti Nui, Alaska Airlines, American Airlines, British Airways, Hawaiian Airlines, Finnair, Qatar Airways and United Airlines.

How to find a cheap flight from Philadelphia to Seattle

Wait until the last minute and flight costs are often sky-high. Plan ahead, book the right way, and your savings can soar. We have loads of saving tips to help you find a cheap flight from Philadelphia to Seattle. Book your flights at the right time and save more.
1
Be flexible with your travel dates to get the cheapest Philadelphia to Seattle ticket.
Tap "Date" in the flight search bar to browse the calendar and find airfare from Philadelphia to Seattle for the next six months in 2025. If you're looking to fly within the next three months, the lowest fare is $131 for a one-way ticket on Mon, Aug 25.
2
Compare cheap Philadelphia to Seattle flight deals from hundreds of airlines.
Our powerful search system compares prices from over 500 airlines. So you can find the cheapest flights from Philadelphia to Seattle. The most affordable airline currently operating on this route is Hawaiian Airlines.
3
Set up a Price Alert to track fare drops.
Set up a Price Alert for your Philadelphia to Seattle route to track ticket prices effortlessly—no need to check manually every day.
4
Don't miss out on cheap Philadelphia to Seattle flight deals and promo codes.
Stay updated on the latest deals with Trip.com Deals and Promo Codes for cheap flights. Sign up for a free membership to unlock even more exclusive flight discounts.
5
Book early or wait unitl the last minute to fine the best fares.
It's always better to book early! Airlines typically release their lowest fares about a year before departure, so check as soon as flights become available. If you miss that window, you may still find great deals closer to your travel date.
6
Search for flights on the go.
For the best booking experience on the go, download Trip.com and search for cheap flights from Philadelphia to Seattle to access exclusive deals just for you.

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