Cheap flights from Seattle to Philadelphia

Seattle-Tacoma
SEA
Philadelphia
PHL

Flight deals from Seattle to Philadelphia

Below you can see the best deals on flights Seattle — Philadelphia for upcoming dates. Direct and connecting flights from various airlines — compare prices and choose the right ticket.

The lowest price for the next 2 months is on 29 September, from $86.

Top 10 cheap flights from Seattle to Philadelphia

F9
F9
$ 151

Seattle — Philadelphia

19:06—05:39
2 Sep 2026
7 h 33 m
1 stop
F9
F9
$ 157

Seattle — Philadelphia

14:37—05:39
2 Sep 2026
12 h 2 m
1 stop
F9
F9
F9
$ 170

Seattle — Philadelphia

16:27—23:18
11 Sep 2026
27 h 51 m
2 stops
F9
F9
F9
$ 173

Seattle — Philadelphia

20:48—23:18
8 Sep 2026
23 h 30 m
2 stops
F9
F9
F9
$ 179

Seattle — Philadelphia

21:45—23:18
14 Sep 2026
22 h 33 m
2 stops
F9
F9
$ 180

Seattle — Philadelphia

19:06—05:39
29 Aug 2026
7 h 33 m
1 stop
F9
F9
F9
$ 183

Seattle — Philadelphia

19:25—18:14
9 Sep 2026
19 h 49 m
2 stops
F9
F9
F9
$ 183

Seattle — Philadelphia

19:25—23:18
9 Sep 2026
24 h 53 m
2 stops
F9
F9
F9
$ 185

Seattle — Philadelphia

16:27—18:31
10 Sep 2026
23 h 4 m
2 stops
F9
F9
F9
$ 185

Seattle — Philadelphia

21:45—23:18
11 Sep 2026
22 h 33 m
2 stops

Prices were found in the last 72 hours and may change — check the exact price when you continue.

About the Seattle — Philadelphia flight

Looking for cheap flights from Seattle to Philadelphia? Compare fares from different airlines, check the flight schedule and travel time — and book your Seattle — Philadelphia ticket online at the best price.

The route has direct flights — around 96 flights per week, flights are operated by Alaska Airlines, American Airlines, Hawaiian Airlines, Delta, a nonstop flight takes about 5 h 9 min, the distance between the cities is around 3,829 km.

Planning your trip? You may find our Philadelphia travel guide, how to get from the airport into town and Philadelphia weather forecast useful. To catch a low fare, use the low-price calendar and the monthly price chart on this page.

Facts about this route

from $86Min. price
SeptemberCheapest
MarchPeak season
YesDirect flights
3,829 kmDistance
5 h 9 minTravel time
4Airlines
96 / wkFlights

Flight schedule from Seattle to Philadelphia

The table shows direct flights from Seattle to Philadelphia on the selected date. The flight takes approximately 5 h 9 min. Regular flights are operated by Alaska Airlines, American Airlines, Hawaiian Airlines and Delta. Departures from Seattle-Tacoma International Airport and Paine Field airports, arrivals at Philadelphia International Airport and Trenton-Mercer Airport.

For each flight, the following details are shown: departure time (local), arrival city and airport, flight number and airline, terminal or gate, and status. Click on a flight to open its details and go to ticket search. To view flights on a different day, change the date above the table.

Today
Any time
Last update: 14 Aug 2026

Flight ticket prices by day: Seattle — Philadelphia

Below is a calendar of the lowest flight ticket prices for Seattle — Philadelphia by day. Pick a convenient date and instantly see the fare. The cheapest flights on this route start from $86 in September, and the most expensive are around $190 in March. If your travel dates are flexible, the calendar will help you find the best price for your preferred period. To view round-trip fares, switch to the "Round trip" tab above the calendar, select your departure date — and the right-hand calendar will highlight the lowest prices for return flights on each day.

 
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Prices by month

Average one-way fares from Seattle to Philadelphia by month. Tickets are usually cheapest in March (around $168) and priciest in July (about $253) — use the table and chart below to pick the best time to fly.

MonthAverage priceLevelMonthAverage priceLevelMonthAverage priceLevel
Jan$178lowMay$206mediumSep$197medium
Feb$173lowJun$243highOct$173low
Mar$168lowJul$253highNov$168low
Apr$187mediumAug$225mediumDec$243high

Some values are estimated based on seasonality.

When to fly

Weather in Philadelphia: it is warmest in July (up to 30 °C on average) and coolest in January (around 6 °C). The driest month is November.

Tickets are usually cheapest in September and most expensive in March. Compare prices and weather by month in the charts below to pick the best time to fly.

Temperature · Philadelphia

Dry and wet days · Philadelphia

Wind speed and direction · Philadelphia

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How to get the best deal on a Seattle — Philadelphia ticket

  • Book ahead: fares for Seattle — Philadelphia are usually lower 3–8 weeks before departure than at the last minute.
  • Play with your dates — Tuesday, Wednesday and Saturday departures are often cheaper than Friday and Sunday.
  • Seattle is served by more than one airport — compare fares and travel time to each before you book.
  • The cheapest month to fly to Philadelphia is usually September — plan your trip around it if your dates are flexible.
  • Compare direct and connecting flights: nonstop is faster, while a connection is sometimes noticeably cheaper.
  • Watch the low-price calendar and the monthly price trend on this page — they make it easier to catch a good date.
  • Travelling light? Pick a cabin-baggage-only fare — tickets without checked luggage are noticeably cheaper.
  • Get to the airport in good time — about 2–3 hours before an international departure and roughly an hour before a domestic one.

Airlines

Flights on the Seattle — Philadelphia route are operated by 4 airlines; Alaska Airlines runs the most flights (around 29% of all flights). Compare carriers, flight shares and schedules below.

  • Alaska AirlinesAS
    9x/week
    WebsiteFleet: 31545M pax/year
    • Direct flight SEA → PHL9x/week
      Duration
      5h 15m
      Days
      MTWTFSS
    29.2%Open →
  • American AirlinesAA
    9x/week
    WebsiteFleet: 965211M pax/year
    • Direct flight SEA → PHL9x/week
      Duration
      5h 23m
      Days
      MTWTFSS
    28.1%Open →
  • Hawaiian AirlinesHA
    9x/week
    WebsiteFleet: 7511M pax/year
    • Direct flight SEA → PHL9x/week
    28.1%
  • DeltaDL
    5x/week
    WebsiteFleet: 986190M pax/year
    • Direct flight SEA → PHL5x/week
    14.6%Open →

Cities and airports on the Seattle — Philadelphia route

Flights Seattle — Philadelphia depart from Seattle-Tacoma International Airport and Paine Field and arrive at Philadelphia International Airport and Trenton-Mercer Airport. Below are pages for the cities, countries, and airports on the route: airlines, schedules, and travel guides.

Departure

Seattle

SEA
United States
About the cityHow to get thereWeatherAll about the country United States
Arrival

Philadelphia

PHL
United States
About the cityHow to get thereWeatherAll about the country United States
Departure airports
Arrival airports

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Frequently asked questions about the Seattle — Philadelphia flight

How long is the flight from Seattle to Philadelphia?

A nonstop Seattle — Philadelphia flight takes about 5 h 9 min — the distance between the cities is around 3,829 km.

How far is it from Seattle to Philadelphia?

The distance from Seattle to Philadelphia is about 3,829 km, which a nonstop flight covers in around 5 h 9 min.

Are there direct flights from Seattle to Philadelphia?

Yes, there are nonstop flights Seattle — Philadelphia — around 96 flights per week.

Which airlines fly from Seattle to Philadelphia?

Airlines operating Seattle — Philadelphia include Alaska Airlines, American Airlines, Hawaiian Airlines, Delta. See the full list with schedules in the "Airlines" section on this page.

Which airports do Seattle — Philadelphia flights use?

Flights from Seattle depart from Seattle-Tacoma International Airport, Paine Field, and arrive at Philadelphia International Airport, Trenton-Mercer Airport. If a city has more than one airport, check which one your ticket uses before you travel.

How much is a ticket from Seattle to Philadelphia?

The price of a Seattle — Philadelphia ticket depends on your travel date, season and demand: it is usually cheapest to fly in September, and most expensive in March. Tickets typically cost between $86 and $190. Check the current lowest fare and low-price calendar on this page.

When is the best time to book flights Seattle — Philadelphia?

Flights Seattle — Philadelphia are usually cheaper when booked in advance — a few weeks before departure and away from peak dates; the most budget-friendly month to fly is September. Compare prices by month in the price trend chart on this page.

How can I find the cheapest flights from Seattle to Philadelphia?

To catch a low fare Seattle — Philadelphia, book a few weeks in advance, keep your dates flexible, and compare airlines and connecting options. The low-price calendar and monthly price chart on this page show the cheapest days and months at a glance: the most budget-friendly month to fly is usually September.

How early should I arrive at the airport?

For international flights, plan to be at the airport about 2–3 hours before departure, and around an hour before a domestic flight. Allow extra time during busy travel seasons and at large hubs, where check-in and security lines can be longer.

Where else you can fly from Seattle

See all
Los AngelesAnchorageVancouverSan FranciscoPhoenixSan DiegoSan JoseSpokanePortlandSanta AnaNew York CityBoiseDenverChicagoDallasSalt Lake CitySacramentoLas VegasRedmondBostonAtlantaHonoluluWashington, D.C.MinneapolisPascoBurbankAustinFairbanksEugeneJuneauNashvilleHoustonCalgaryBozemanDetroitPalm SpringsMissoulaMedfordRenoOrlando

Where else you can fly from Philadelphia

See all
AtlantaChicagoBostonOrlandoFort LauderdaleMiamiTorontoDetroitCharlotteWashington, D.C.RaleighDallasLos AngelesPhoenixDenverMinneapolisSan JuanPittsburghNashvilleMontrealColumbusClevelandTampaSan FranciscoIndianapolisNorfolkCincinnatiHoustonLas VegasHarrisburgJacksonvilleRichmondHartfordSouth PortlandAlbanyRochesterKansas CityCancunPunta CanaNorth Charleston

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