How many flights from Seattle to Philadelphia are non-stop?

Across the trailing quarter, approximately 5.6% of flights from Seattle to Philadelphia were non-stop. For flights that include stopovers, travelers typically encountered a median of 2 stopovers. This data reflects the availability and routing patterns observed over a 90-day period.

How long does it take to fly from Seattle to Philadelphia?

The typical direct flight from Seattle to Philadelphia has a median duration of 5 hours and 15 minutes, covering a distance of 3818 kilometers. For flights with one stop, the median travel time increases significantly to 14 hours and 53 minutes. These durations reflect historical flight patterns for this route.

Are there frequently good prices on flights from Seattle to Philadelphia?

Historically, good prices on flights from Seattle to Philadelphia are frequent. This assessment is based on pricing trends observed over a 30-day period. The route consistently offers opportunities for travelers to find competitive fares.

Flights From Seattle

To Philadelphia

Cheap Flights from Seattle to Philadelphia

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Deals from

Seattle

RatePunk searches hundreds of travel sites at once for deals on flights to Philadelphia

Prices updated 7 days ago

483 airlines compared

80%+ AI score for best value

Fares are subject to change and may not be available for all dates. (Data last updated Oct 26, 2026.)

Today’s best flight deals from Seattle to Philadelphia

Explore current cheapest deals departing from Seattle to Philadelphia

2027-02-01 – 2027-02-09
SEA - Philadelphia
68% AI deal score
$236
$247
Round trip
2027-02-01 – 2027-02-23
SEA - Philadelphia
68% AI deal score
$221
$248
Round trip
2027-02-03 – 2027-02-09
SEA - Philadelphia
68% AI deal score
$241
$258
Round trip
2027-02-03 – 2027-02-23
SEA - Philadelphia
67% AI deal score
$222
$259
Round trip
2027-02-01 – 2027-02-17
SEA - Philadelphia
67% AI deal score
$223
$263
Round trip
2026-12-02 – 2026-12-08
SEA - Philadelphia
75% AI deal score
$382
$306
Round trip
2027-03-24 – 2027-03-30
SEA - Philadelphia
67% AI deal score
$205
$367
Round trip
2027-03-26 – 2027-03-30
SEA - Philadelphia
67% AI deal score
$208
$367
Round trip
2027-04-19 – 2027-04-24
SEA - Philadelphia
70% AI deal score
$231
$367
Round trip
2027-04-06 – 2027-04-07
SEA - Philadelphia
70% AI deal score
$234
$367
Round trip

Seattle to Philadelphia: Overview

Insights for flights from Seattle to Philadelphia

A typical journey from Seattle to Philadelphia takes about 5h 15m, including connections. Given that most itineraries on this route involve at least one stop, this median duration reflects the overall travel time you can expect. For connecting flights, the median journey time extends significantly to 22h 0m, indicating that while direct flights are possible, many travelers will experience longer transit times.

Right now, if you are looking for cheap flights from Seattle to Philadelphia, fares are typically between $479–$1369, with a median of $769. Current fares are above the typical level, suggesting that prices are elevated compared to the usual range. Only about 5% of recent fares were classified as a good price, indicating that finding a low fare might require some flexibility or patience.

When is the cheapest time to fly from Seattle to Philadelphia? Historically, the most affordable months to fly are April, with a median fare of $359, followed by July at $365, and March at $391. These months offer significantly lower median fares compared to the overall typical price range, making them prime times to consider for your travel plans.

Most itineraries from Seattle to Philadelphia connect at least once, with only 5.6% of recent fares being non-stop. This means that for the vast majority of travelers, a direct flight from Seattle to Philadelphia is not the typical option. When connecting, the median number of stopovers is 2, so you should anticipate at least two stops on most itineraries for this route.

The distance between Seattle and Philadelphia is approximately 3818 kilometers. This classifies the route as a medium-haul journey, meaning it's a significant distance that typically involves several hours of flight time and often requires connecting flights.

How much is a round trip from Seattle to Philadelphia

Regular price: $207 - $349

Prices for flights from Seattle to Philadelphia are currently within the regular range.

The regular price range for flights from Seattle to Philadelphia is between $207 and $349. The current lowest deal is $247 with Frontier Airlines, for travel from Feb 1-Feb 9.

now $247

Low $207

High $349

The cheapest time to fly from Seattle to Philadelphia

The cheapest month to fly from Seattle to Philadelphia is July, with a median price of $365. The most expensive month is December, with a median price of $1782. Prices are generally lower from March to October.

July

Cheapest

Flights from $365

December

Most Expensive

Flights from $1,782

Jan

Feb

Mar

Apr

Jun

Jul

Aug

Sep

Oct

Nov

Dec

Direct flights from Seattle to Philadelphia

Alaska Airlines, Inc.

Last-minute flights going from Seattle to Philadelphia

Wed, Nov 25

⌛ Last-Minute

SEA - Philadelphia

Seattle (SEA) - Philadelphia (PHL)

Deutsche Luft Hansa

$203

$397

One-way

Wed, Dec 2

⌛ Last-Minute

SEA - Philadelphia

Seattle (SEA) - Philadelphia (PHL)

United Airlines

$514

$305

One-way

Mon, Dec 14

⌛ Last-Minute

SEA - Philadelphia

Seattle (SEA) - Philadelphia (PHL)

Alaska Airlines, Inc.

$320

$396

One-way

Mon, Dec 14

⌛ Last-Minute

SEA - Philadelphia

Seattle (SEA) - Philadelphia (PHL)

Alaska Airlines, Inc.

$315

$396

One-way

Mon, Dec 14

⌛ Last-Minute

SEA - Philadelphia

Seattle (SEA) - Philadelphia (PHL)

Alaska Airlines, Inc.

$315

$396

One-way

Mon, Dec 14

⌛ Last-Minute

SEA - Philadelphia

Seattle (SEA) - Philadelphia (PHL)

Alaska Airlines, Inc.

$315

$396

One-way

Biggest price drops on these dates for flights from Seattle to Philadelphia

6 nights

Dec 2 - Dec 8

$514 → $305

41%

4 nights

Dec 16 - Dec 20

$535 → $383

28%

1 night

Dec 19 - Dec 20

$548 → $415

24%

2 nights

Dec 18 - Dec 20

$547 → $442

19%

Popular Airports to fly from Seattle to Philadelphia

Seattle - Philadelphia route insights

💸 Price insights

Recent fares are above the typical level.

Recent fares for Seattle to Philadelphia are above the typical level for this route.

📅 Best time to fly

Fly in April for prices below the typical level.

Historically, April, July, and March offer the lowest median prices for this route.

⏱️ Flight duration

Direct flights take 5h 15m.

Direct flights typically take 5h 15m, while connecting flights average 22h 0m.

✈️ Airlines & availability

Connecting flights are dominant for this route.

Only 5.6% of recent flights are direct, with connecting flights having a median of 2 stopovers.

🏆 Airline highlight

Alaska Airlines, Inc. offers direct flights.

Alaska Airlines, Inc. is one of the airlines offering direct flights on this route.

🎯 Booking tip

Deals appear frequently.

Deals for flights from Seattle to Philadelphia appear frequently, typically every 30 days.

Seattle main airports to depart from

Seattle–Tacoma International (SEA)

Cheapest

Seattle–Tacoma International Airport is a good option for flights from Seattle to Philadelphia.

📍 ~18 km from Seattle city center (reachable by car or train).

💸 Flights from ~$233

Philadelphia main airports to arrive at

Philadelphia International (PHL)

Cheapest

Philadelphia International Airport is a convenient arrival choice for flights from Seattle to Philadelphia.

📍 ~11 km from city center (reachable by car)

💸 Flights from ~$219

Airports nearby Philadelphia used as alternative

Newark Liberty International (EWR)

This major international hub offers a vast network of domestic and global destinations, often with competitive pricing.

📍 ~135 km from Philadelphia (reachable by rail)

💸 Flights from ~$239

Business & First Class Flight Deals to Philadelphia

$1,287

Save $110

Alaska Airlines, Inc.

Business Class

Frequently Asked Questions About Flights to Philadelphia

Historically, the optimal booking window for flights from Seattle to Philadelphia is typically 7-13 days before departure. During this period, the average price observed was $741. In contrast, booking 0-6 days out saw average prices rise to $1380, while booking 60+ days in advance resulted in significantly higher average prices of $2541. These trends are based on observations over a trailing 90-day period.

A flight from Seattle to Philadelphia is generally considered a good deal if the price is around $479 or less. This threshold represents the 25th percentile of prices observed over the trailing 90 days, meaning 25% of all prices were at or below this amount. The median price for this route historically stands at $769, with prices reaching up to $1369 for the 75th percentile.

Historically, the cheapest months to fly from Seattle to Philadelphia include April, with a median price of $359, and July, with a median price of $365. March also offered competitive prices, with a median of $391. These prices are considerably lower than the annual median price of $769 for this route, based on data collected over a 270-day period.

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Flights to Philadelphia from other cities

Flights from Atlanta to Philadelphia Flights from Austin to Philadelphia Flights from Barcelona to Philadelphia Flights from Belfast to Philadelphia Flights from Boston to Philadelphia Flights from Chicago to Philadelphia Flights from Nashville to Philadelphia Flights from Ottawa to Philadelphia Flights from San Francisco to Philadelphia Flights from Singapore to Philadelphia Flights from Tampa to Philadelphia Flights from Toronto to Philadelphia

Seattle to Philadelphia: Overview

Insights for flights from Seattle to Philadelphia

How much is a round trip from Seattle to Philadelphia

Regular price: $207 - $349

Prices for flights from Seattle to Philadelphia are currently within the regular range.

The regular price range for flights from Seattle to Philadelphia is between $207 and $349. The current lowest deal is $247 with Frontier Airlines, for travel from Feb 1-Feb 9.

now $247

Low $207

High $349

The cheapest time to fly from Seattle to Philadelphia

July

Cheapest

Flights from $365

December

Most Expensive

Flights from $1,782

Jan

Feb

Mar

Apr

Jun

Jul

Aug

Sep

Oct

Nov

Dec

Direct flights from Seattle to Philadelphia

Alaska Airlines, Inc.

Last-minute flights going from Seattle to Philadelphia

Wed, Nov 25

⌛ Last-Minute

SEA - Philadelphia

Seattle (SEA) - Philadelphia (PHL)

Deutsche Luft Hansa

$203

$397

One-way

Wed, Dec 2

⌛ Last-Minute

SEA - Philadelphia

Seattle (SEA) - Philadelphia (PHL)

United Airlines

$514

$305

One-way

Mon, Dec 14

⌛ Last-Minute

SEA - Philadelphia

Seattle (SEA) - Philadelphia (PHL)

Alaska Airlines, Inc.

$320

$396

One-way

Mon, Dec 14

⌛ Last-Minute

SEA - Philadelphia

Seattle (SEA) - Philadelphia (PHL)

Alaska Airlines, Inc.

$315

$396

One-way

Mon, Dec 14

⌛ Last-Minute

SEA - Philadelphia

Seattle (SEA) - Philadelphia (PHL)

Alaska Airlines, Inc.

$315

$396

One-way

Mon, Dec 14

⌛ Last-Minute

SEA - Philadelphia

Seattle (SEA) - Philadelphia (PHL)

Alaska Airlines, Inc.

$315

$396

One-way

Biggest price drops on these dates for flights from Seattle to Philadelphia

6 nights

Dec 2 - Dec 8

$514 → $305

41%

4 nights

Dec 16 - Dec 20

$535 → $383

28%

1 night

Dec 19 - Dec 20

$548 → $415

24%

2 nights

Dec 18 - Dec 20

$547 → $442

19%

Popular Airports to fly from Seattle to Philadelphia