Cheap Flights from Seattle, WA to Philadelphia, PA from $73

One way Round trip

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On Cheapflightsplus.com you will find 2 direct and 608 connecting flights from Seattle to Philadelphia. You can compare airfare deals from 7 airlines and multiple travel sites from $73, book and save on cheap plane tickets and last minute offers. Also check out SEA-PHL flight schedule to find best flight time, convenient departure and arrival airports.

Find One-Way and Round-Trip Seattle to Philadelphia Flight Deals

To find the cheapest one way airline ticket select the date with the lowest price on the calendar below and click «Find Flights». To search for round-trip flight deals click on the link «Check prices for return flights» and select the date of the return flight. Cheapest flights in November: $73 (one-way), $125 (round-trip).

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Best Flights from Seattle to Philadelphia Today

Take a look at the list of non stop flights and flights with layovers from Seattle to Philadelphia with the lowest price of $73. The fastest direct flight takes 4h 57m and the fastest connecting – 6h 52m.

Price	Departure	Arrival	Flight Duration	Airline	Flight
from $152 Find flight	09:44 Seattle Seattle-Tacoma Intl	17:50 Philadelphia Philadelphia Int.	5h 6m	Alaska Airlines	AS442
from $409 Find flight	21:44 Seattle Seattle-Tacoma Intl	05:41+1 день Philadelphia Philadelphia Int.	4h 57m	Alaska Airlines	AS371
from $73 Find flight	22:08 Seattle Seattle-Tacoma Intl	05:37+2 дня Philadelphia Philadelphia Int.	28h 29m layover 22h 5m - Denver	Frontier Airlines	F91176 F93340
from $96 Find flight	09:37 Seattle Seattle-Tacoma Intl	17:48+1 день Philadelphia Philadelphia Int.	29h 11m layover 22h 41m - Denver	Frontier Airlines	F93406 F93266
from $152 Find flight	17:28 Seattle Seattle-Tacoma Intl	05:24+1 день Philadelphia Philadelphia Int.	8h 56m layover 1h 37m - Las Vegas	Spirit Airlines	NK204 NK904
from $205 Find flight	08:12 Seattle Seattle-Tacoma Intl	04:43+1 день Philadelphia Philadelphia Int.	17h 31m layover 11h 19m - Denver	Alaska Airlines	AS682 F93340
from $120 Find flight	09:19 Seattle Seattle-Tacoma Intl	12:10+1 день Philadelphia Philadelphia Int.	23h 51m layover 10h 45m - Denver 5h 11m - Atlanta	Frontier Airlines	F93406 F93294 F93210
from $153 Find flight	17:28 Seattle Seattle-Tacoma Intl	09:48+1 день Philadelphia Philadelphia Int.	13h 20m layover 2h 10m - Las Vegas 3h 14m - Detroit	Spirit Airlines	NK204 NK2376 NK1013
from $177 Find flight	12:50 Seattle Seattle-Tacoma Intl	13:40+1 день Philadelphia Philadelphia Int.	21h 50m layover 3h 47m - Las Vegas 9h 0m - Los Angeles	Spirit Airlines	NK414 NK1495 NK844
from $179 Find flight	17:26 Seattle Seattle-Tacoma Intl	07:28+1 день Philadelphia Philadelphia Int.	11h 2m layover 1h 26m - Los Angeles 0h 42m - Detroit	Spirit Airlines	NK261 NK262 NK818
from $179 Find flight	19:45 Seattle Seattle-Tacoma Intl	14:02+1 день Philadelphia Philadelphia Int.	15h 17m layover 1h 12m - Las Vegas 5h 15m - Los Angeles	Spirit Airlines	NK414 NK465 NK844
from $196 Find flight	06:35 Seattle Seattle-Tacoma Intl	04:43+1 день Philadelphia Philadelphia Int.	19h 8m layover 2h 9m - Portland 10h 2m - Denver	Alaska Airlines	AS2111 AS336 F93340
from $199 Find flight	06:00 Seattle Seattle-Tacoma Intl	05:22+1 день Philadelphia Philadelphia Int.	20h 22m layover 3h 17m - Los Angeles 8h 11m - Las Vegas	Spirit Airlines	NK801 NK712 NK904
from $199 Find flight	06:00 Seattle Seattle-Tacoma Intl	05:22+1 день Philadelphia Philadelphia Int.	20h 22m layover 4h 54m - Los Angeles 6h 34m - Las Vegas	Spirit Airlines	NK801 NK1494 NK904
from $203 Find flight	06:00 Seattle Seattle-Tacoma Intl	05:22+1 день Philadelphia Philadelphia Int.	20h 22m layover 1h 54m - Los Angeles 9h 35m - Las Vegas	Spirit Airlines	NK801 NK1724 NK904
from $204 Find flight	18:35 Seattle Seattle-Tacoma Intl	09:15+2 дня Philadelphia Philadelphia Int.	35h 40m layover 14h 15m - Denver 14h 25m - Chicago	Alaska Airlines	AS737 F91228 F94368

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*Departure and arrival times - local. Prices indicated for one-way flights. Information updated on April 04, 2025

Flight Schedule Seattle (Washington) to Philadelphia (Pennsylvania)

Full flight schedule will help you in detecting at what time planes fly from Seattle to Philadelphia. You can also specify the concrete flights and airlines on the route and how long the flight actually is. Use the calendar for today, tomorrow or other specific date as some flights are available only on certain days of the week.

Departure	Flight Details	Flight Duration	Price
09:44 — 17:50	09:44 — 17:50 AS442 Alaska Airlines Seattle — Philadelphia	5h 6m	Find flight from$152
21:44 — 05:41 +1 day	21:44 — 05:41 AS371 Alaska Airlines Seattle — Philadelphia	4h 57m	Find flight from$409
05:30 — 19:14	05:30 — 07:55 NK176 Spirit Airlines Seattle — Las Vegas 3h 35m stop 11:30 — 19:14 NK803 Spirit Airlines Las Vegas — Philadelphia	10h 44m including layover	Find flight from$224
07:00 — 17:35	07:00 — 13:06 UA1373 United Airlines Seattle — Chicago 1h 23m stop 14:29 — 17:35 UA1617 United Airlines Chicago — Philadelphia	7h 35m including layover	Find flight from$224
08:12 — 04:43 +1 day	08:12 — 11:53 AS682 Alaska Airlines Seattle — Denver 11h 19m stop 23:12 — 04:43 F93340 Frontier Airlines Denver — Philadelphia	17h 31m including layover	Find flight from$205
09:19 — 04:43 +1 day	09:19 — 13:04 F93406 Frontier Airlines Seattle — Denver 10h 8m stop 23:12 — 04:43 F93340 Frontier Airlines Denver — Philadelphia	16h 24m including layover	Find flight from$108
09:37 — 17:48 +1 day	09:37 — 13:25 F93406 Frontier Airlines Seattle — Denver 22h 41m stop 12:06 — 17:48 F93266 Frontier Airlines Denver — Philadelphia	29h 11m including layover	Find flight from$96
11:05 — 21:40	10:55 — 16:59 UA747 United Airlines Seattle — Chicago 1h 20m stop 18:25 — 21:35 UA1776 United Airlines Chicago — Philadelphia	7h 35m including layover	Find flight from$224
12:35 — 23:24	12:35 — 16:17 UA1483 United Airlines Seattle — Denver 1h 33m stop 17:50 — 23:24 UA415 United Airlines Denver — Philadelphia	7h 49m including layover	Find flight from$224
15:20 — 04:43 +1 day	15:20 — 19:04 UA1476 United Airlines Seattle — Denver 4h 8m stop 23:12 — 04:43 F93340 Frontier Airlines Denver — Philadelphia	10h 23m including layover	Find flight from$229
16:00 — 06:10 +1 day	16:00 — 18:31 NK414 Spirit Airlines Seattle — Las Vegas 3h 53m stop 22:24 — 06:10 NK904 Spirit Airlines Las Vegas — Philadelphia	11h 10m including layover	Find flight from$206
17:28 — 05:24 +1 day	17:28 — 19:55 NK204 Spirit Airlines Seattle — Las Vegas 1h 37m stop 21:32 — 05:24 NK904 Spirit Airlines Las Vegas — Philadelphia	8h 56m including layover	Find flight from$152
22:08 — 05:37 +2 days	20:19 — 00:05 F91176 Frontier Airlines Seattle — Denver 22h 5m stop 23:59 — 05:30 F93340 Frontier Airlines Denver — Philadelphia	28h 29m including layover	Find flight from$73
22:08 — 17:48 +1 day	22:08 — 01:51 F91176 Frontier Airlines Seattle — Denver 10h 15m stop 12:06 — 17:48 F93266 Frontier Airlines Denver — Philadelphia	16h 40m including layover	Find flight from$118
23:59 — 10:50 +1 day	23:59 — 06:00 UA2019 United Airlines Seattle — Chicago 1h 45m stop 07:45 — 10:50 UA2418 United Airlines Chicago — Philadelphia	7h 51m including layover	Find flight from$224
05:30 — 07:28 +1 day	05:30 — 07:55 NK176 Spirit Airlines Seattle — Las Vegas 9h 52m stop 17:47 — 00:49 NK256 Spirit Airlines Las Vegas — Detroit 4h 56m stop 05:45 — 07:28 NK818 Spirit Airlines Detroit — Philadelphia	22h 58m including layover	Find flight from$223
06:00 — 05:22 +1 day	06:00 — 08:46 NK801 Spirit Airlines Seattle — Los Angeles 3h 17m stop 12:03 — 13:24 NK712 Spirit Airlines Los Angeles — Las Vegas 8h 11m stop 21:35 — 05:22 NK904 Spirit Airlines Las Vegas — Philadelphia	20h 22m including layover	Find flight from$199
06:35 — 04:43 +1 day	06:35 — 07:31 AS2111 Alaska Airlines Seattle — Portland 2h 9m stop 09:40 — 13:10 AS336 Alaska Airlines Portland — Denver 10h 2m stop 23:12 — 04:43 F93340 Frontier Airlines Denver — Philadelphia	19h 8m including layover	Find flight from$196
12:50 — 13:40 +1 day	12:50 — 15:24 NK414 Spirit Airlines Seattle — Las Vegas 3h 47m stop 19:11 — 20:30 NK1495 Spirit Airlines Las Vegas — Los Angeles 9h stop 05:30 — 13:40 NK844 Spirit Airlines Los Angeles — Philadelphia	21h 50m including layover	Find flight from$177
16:00 — 14:20 +1 day	16:00 — 18:31 NK414 Spirit Airlines Seattle — Las Vegas 4h 15m stop 22:46 — 05:44 NK2376 Spirit Airlines Las Vegas — Detroit 6h 58m stop 12:42 — 14:20 NK1013 Spirit Airlines Detroit — Philadelphia	19h 20m including layover	Find flight from$237
17:28 — 09:48 +1 day	17:28 — 19:55 NK204 Spirit Airlines Seattle — Las Vegas 2h 10m stop 22:05 — 05:00 NK2376 Spirit Airlines Las Vegas — Detroit 3h 14m stop 08:14 — 09:48 NK1013 Spirit Airlines Detroit — Philadelphia	13h 20m including layover	Find flight from$153
18:13 — 09:41 +1 day	18:13 — 20:32 UA737 United Airlines Seattle — San Francisco 2h 13m stop 22:45 — 06:52 UA1849 United Airlines San Francisco — Washington D.C. 1h 38m stop 08:30 — 09:41 UA4590 United Airlines Washington D.C. — Philadelphia	12h 28m including layover	Find flight from$230
18:35 — 09:15 +2 days	18:35 — 22:13 AS737 Alaska Airlines Seattle — Denver 14h 15m stop 12:28 — 15:50 F91228 Frontier Airlines Denver — Chicago 14h 25m stop 06:15 — 09:15 F94368 Frontier Airlines Chicago — Philadelphia	35h 40m including layover	Find flight from$204
19:45 — 14:02 +1 day	19:45 — 22:13 NK414 Spirit Airlines Seattle — Las Vegas 1h 12m stop 23:25 — 00:40 NK465 Spirit Airlines Las Vegas — Los Angeles 5h 15m stop 05:55 — 14:02 NK844 Spirit Airlines Los Angeles — Philadelphia	15h 17m including layover	Find flight from$179
20:19 — 09:15 +2 days	20:19 — 00:05 F91176 Frontier Airlines Seattle — Denver 12h 23m stop 12:28 — 15:50 F91228 Frontier Airlines Denver — Chicago 14h 25m stop 06:15 — 09:15 F94368 Frontier Airlines Chicago — Philadelphia	33h 56m including layover	Find flight from$120
20:19 — 11:25 +2 days	20:19 — 00:05 F91176 Frontier Airlines Seattle — Denver 23h 44m stop 23:49 — 04:52 F93294 Frontier Airlines Denver — Atlanta 4h 31m stop 09:23 — 11:25 F91004 Frontier Airlines Atlanta — Philadelphia	36h 6m including layover	Find flight from$120

Departure	Arrival	Flight Details	Flight Time	Price
		stop stop	including layover	Find flight from$

*Departure and arrival times - local. Updated on April 4, 2025

Flight Information

Below we will explain in detail what the flights cost on the destination from Seattle to Philadelphia depends on and how to choose the most interesting flight option for you.

Distance between Seattle and Philadelphia is 3817 miles. Time difference between the cities is 3h. Airplanes depart 00:25 to 23:59 from 3 Seattle airports and arrive 00:25 to 23:59 to 4 Philadelphia airports. Average flight time is 5h 2m.

The fastest flight 4h 57m
Average flight time 5h 2m
The earliest flight 00:25
The latest flight 23:59
Distance 2372 ml

The cheapest months to travel to Philadelphia are november (from 73 $), february (from 96 $), december (from 152 $).

The most expensive months are january (from 179 $), december (from 152 $), february (from 96 $).

What is the lowest airfare Seattle to Philadelphia?

The cheapest plane ticket found by our users is $73. This airfare is for economy class on one-way F91176 flight by Frontier Airlines for February 21, 2025 which leaves Seattle-Tacoma Intl in Seattle at 22:08 am and arrives at Philadelphia Philadelphia Int. at 05:37.

Economy class

$73

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Business class

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First class

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Popular Airlines on the Route

The flight Seattle — Philadelphia is served by 7 regular airlines and 3 low-cost airlines. Most of the flights on this route are operated by American Airlines - 116 departures per week at the price of from $ 305 . And the most expensive tickets are offered by American Airlines airline - from $ 1859.

Direct flights

There are 2 nonstop flights on the route. The fastest direct flight is AS371 by Alaska Airlines takes 4h 57m and the cheapest is F91176 by Frontier Airlines for $152.

AS - Alaska Airlines

from $152

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Connecting Flights

There are 608 flights with layovers on the route. The fastest connecting flight is DL810 by Delta Air Lines Inc. takes 6h 52m and the cheapest is F91176 by Frontier Airlines for $73.

AA - American Airlines

from $305

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AS - Alaska Airlines

from $196

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F9 - Frontier Airlines

from $73

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SY - Sun Country Airlines

from $253

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DL - Delta Air Lines Inc.

from $297

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UA - United Airlines

from $224

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NK - Spirit Airlines

from $152

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Airports

You can fly from Seattle to Philadelphia from 3 airports (Boeing Field International Airport, Seattle-Tacoma Intl, Kenmore Air Harbor SPB).

Seattle airports

Boeing Field International Airport-BFI

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Seattle-Tacoma Intl-SEA

from $73
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Kenmore Air Harbor SPB-LKE

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Philadelphia airports

Philadelphia Int.-PHL

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North Philadelphia-PNE

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Mustin Alf-MUV

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Philadelphia Sea Plane Base-PSQ

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Airplanes

There are flights to Philadelphia from Seattle by 7 airlines that use 10 aircraft brands. They range from huge modern airplanes to small-sized.

Boeing 737-100/200

from $120

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Airbus A318/319/320/321

from $192

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Embraer 175 (short wing)

from $196

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Boeing 737 MAX 9

from $204

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Boeing 737 MAX 8

from $229

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Boeing 737-900

from $297

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Airbus A321

from $300

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Boeing 737-800

from $327

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Airbus A320

from $360

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Canadair Regional Jet 700

from $390

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Top Domestic Destinations from Seattle

You may also consider searching for discounted plane tickets to some other popular places from Seattle within United States.

Seattle — Washington D.C.

from $78

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Seattle — Las Vegas

from $62

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Seattle — New York

from $180

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Seattle — Chicago

from $73

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Seattle — Phoenix

from $67

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Seattle — San Diego

from $74

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Seattle — Los Angeles

from $53

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Seattle — Denver

from $243

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Seattle — Dallas

from $72

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Seattle — Boston

from $63

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Top International Destinations from Seattle

Our state-of-the art metasearch will definitely provide you with the best airfare on international flights. We’re proud to partner with many reliable travel suppliers located outside the US what gives us an opportunity to offer the most competitive prices on far destinations.

Seattle — Tokyo

from $77

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Seattle — London

from $70

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Seattle — Vancouver

from $57

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Seattle — Cancun

from $63

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Seattle — Paris

from $66

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Seattle — Toronto

from $64

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Seattle — Calgary

from $76

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Seattle — Mumbai

from $80

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Seattle — Montreal

from $68

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Seattle — Amsterdam

from $64

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How to book a plane ticket yourself?

Fill in the search parameters — cities of departure and destination, departure and return dates and click «Find flights»
Select the best flight that you like. Please, check the airports of departure and arrival. Select the best fare, but pay attention to the following flight details - airports of departure and arrival, flight duration and layovers. Please use filters and sort to find the best flight.
Click «Buy» when you are ready — our system will redirect you to the site that sells the selected flight ticket.
Fill in all passenger and payment information — passport and contact information, please double check all passengers’ names and make a payment for your itinerary.
That's it — you will receive an email with your e-ticket usually within 10 minutes after your flight is confirmed. Please, print the e-ticket and have it with you at the airport. You would need to have only a passport and/or a required form of ID to travel. Please, check your Visa requirements if you travel outside of the United States or Canada.
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