Latest deals
Insights
When to book
FAQs
Price Alerts

Cheap flights from Philadelphia to Seattle

1 adult
0 bags
'This year, momondo is the #1 place for airfares on the internet.'
Save money when you book flights with momondo
Big names, great deals
Big names, great deals
Search 100s of travel sites to compare prices.
Filter for what you want
Filter for what you want
Free Wi-Fi? Stopover? Instantly customise your results.
Trusted and free
Trusted and free
We’re completely free to use - no hidden charges or fees.
Price Alerts
Price Alerts
Not ready to book? to track prices.

Find the cheapest flights from Philadelphia to Seattle

Cheap return flights

These are some of the best return flight deals from Philadelphia to Seattle that have been recently found on momondo from popular airlines, departing in the coming months.

Cheap one-way flights

Flying one-way? These are some of the best deals recently discovered on momondo for flights from Philadelphia to Seattle.

Cheap last-minute flights

Planning a quick getaway from Philadelphia to Seattle? These are the last-minute flight deals available now.

Cheap direct flights

If you prefer a non-stop journey, check out our latest direct flight deals to Seattle, so you can enjoy a seamless trip without stopovers.

Cheap bus & train deals from Philadelphia to Seattle

Find recent round-trip train or bus tickets from Philadelphia to Seattle.

All round-trip flight deals to Seattle

The cheapest plane tickets to Seattle found on KAYAK recently.
PHL-SEA
5h 56mdirect
SEA-PHL
5h 10mdirect
American Airlines
Find Deal
PHL-SEA
6h 11mdirect
SEA-PHL
5h 10mdirect
Qatar Airways
Find Deal
PHL-SEA
6h 27mdirect
SEA-PHL
5h 11mdirect
Alaska Airlines
Find Deal
PHL-SEA
6h 12mdirect
SEA-PHL
5h 16mdirect
Finnair
Find Deal
PHL-SEA
6h 27mdirect
SEA-PHL
5h 11mdirect
Hawaiian Airlines
Find Deal
PHL-SEA
6h 27mdirect
SEA-PHL
5h 11mdirect
Air Tahiti Nui
Find Deal
PHL-SEA
5h 56mdirect
American Airlines
Find Deal
PHL-SEA
6h 11mdirect
Qatar Airways
Find Deal
PHL-SEA
6h 27mdirect
Alaska Airlines
Find Deal
PHL-SEA
6h 12mdirect
Finnair
Find Deal
PHL-SEA
6h 27mdirect
Hawaiian Airlines
Find Deal
PHL-SEA
6h 27mdirect
Air Tahiti Nui
Find Deal
PHL-SEA
6h 13mdirect
British Airways
Find Deal

See travel insights to Seattle from

How to get the cheapest flight ticket from Philadelphia to Seattle

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

What is the cheapest month to fly to Seattle?

The cheapest month to fly to Seattle from Philadelphia is in February. Flight prices, which tend to average around R6 184, are often lower during this time because this is during the off-season. If you aren’t able to travel to Seattle during the month of February, then flying in April is also cheap. Prices for this month can be found on momondo for an average of R6 715.

What is the cheapest Philadelphia to Seattle/Tacoma Intl flight route?

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

How far in advance should I book a flight to Seattle?

The ideal time to book your flight to Seattle is 31 days in advance, when prices tend to average R7 849. However, in the past 72 hours, people saw flights from Philadelphia for as low as R112 488.

What cabin class options are available on Philadelphia to Seattle/Tacoma Intl flights?

There are 1 cabin classes available to choose from on Philadelphia to Seattle/Tacoma Intl flights. Cabin price and availability will vary by airline so perform a search above to find the right deals for you.

How have Philadelphia to Seattle flight prices changed over time?

As of December 2024, prices for Philadelphia to Seattle flights are approximately 10% more expensive when compared to flights at the same time last year.

When to book flights from Philadelphia to Seattle

Are you open to changing your travel dates? Check out the ideal times to fly from Philadelphia to Seattle according to our flight data. Find out which month and days have the cheapest flights.
Estimated return price

Cheap Philadelphia to Seattle (PHL to SEA) flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from Philadelphia to Seattle

Direct flights

None
There are no direct flights from Philadelphia to Seattle. There are no popular flight routes from Philadelphia to Seattle.

  • How far is Philadelphia to Seattle/Tacoma Intl by plane?

    The straight-line distance from Philadelphia to Seattle/Tacoma Intl is 3817,8 km.

  • When did momondo last update prices for flights from Philadelphia Airport to Seattle/Tacoma Intl Airport?

    Prices for flights from Philadelphia Airport to Seattle/Tacoma Intl Airport are refreshed on a daily basis.

  • How old do you have to be to fly from Philadelphia Airport to Seattle/Tacoma Intl Airport?

    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 stopovers. It is recommended that you verify with the airline you are booking with for travel from Philadelphia Airport to Seattle/Tacoma Intl Airport.

  • What documentation or ID do you need to fly to Seattle/Tacoma Intl Airport?

    The travel and health documents required for your trip to Seattle/Tacoma Intl Airport 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 licence, and a passport valid for six-months after you plan to arrive at Seattle/Tacoma Intl Airport. 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 Seattle?


Why use momondo?

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

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 Seattle from Philadelphia.

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

Flights from Philadelphia to Seattle with flexible booking policies can be found by using the search form above and then selecting our dedicated flexible booking filter, which will highlight only the flights where this policy is applied.

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

momondo helps you find the best flight between Philadelphia and Seattle by providing filters to narrow your choice of flights to those matching your criteria. You can select flights based on numerous factors such as price, departure and landing times, airport and airline.

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

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


An easier way to manage your Seattle trip

We make it super easy to schedule, organise 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.
1 adult
From?
To?
Sat 28/12
Sat 4/1
Email me momondo's favourite deals

Find better results for your trip to the United States

Fly your favourite airline to Seattle

Airlines are sorted and displayed according to clicks in the past 7 days on momondo