Cheap Flights from Philadelphia, PA to Seattle, WA from $87

One way Round trip

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On Cheapflightsplus.com you will find 5 direct and 228 connecting flights from Philadelphia to Seattle. You can compare airfare deals from 6 airlines and multiple travel sites from $87, book and save on cheap plane tickets and last minute offers. Also check out PHL-SEA flight schedule to find best flight time, convenient departure and arrival airports.

Find One-Way and Round-Trip Philadelphia to Seattle 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: $87 (one-way), $149 (round-trip).

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Best Flights from Philadelphia to Seattle Today

Take a look at the list of non stop flights and flights with layovers from Philadelphia to Seattle with the lowest price of $87. The fastest direct flight takes 5h 52m and the fastest connecting – 7h 35m.

Price	Departure	Arrival	Flight Duration	Airline	Flight
from $116 Find flight	07:20 Philadelphia Philadelphia Int.	10:12 Seattle Seattle-Tacoma Intl	5h 52m	Hawaiian Airlines	HA6353
from $116 Find flight	18:58 Philadelphia Philadelphia Int.	22:00 Seattle Seattle-Tacoma Intl	6h 2m	Hawaiian Airlines	HA6429
from $119 Find flight	07:20 Philadelphia Philadelphia Int.	10:12 Seattle Seattle-Tacoma Intl	5h 52m	Alaska Airlines	AS446
from $119 Find flight	18:58 Philadelphia Philadelphia Int.	22:00 Seattle Seattle-Tacoma Intl	6h 2m	Alaska Airlines	AS443
from $183 Find flight	06:45 Philadelphia Philadelphia Int.	09:42 Seattle Seattle-Tacoma Intl	5h 57m	Hawaiian Airlines	HA6428
from $87 Find flight	13:02 Philadelphia Philadelphia Int.	18:46 Seattle Seattle-Tacoma Intl	8h 44m layover 1h 23m - Denver	Frontier Airlines	F93265 F91175
from $87 Find flight	07:19 Philadelphia Philadelphia Int.	14:06 Seattle Seattle-Tacoma Intl	9h 47m layover 1h 36m - Las Vegas	Frontier Airlines	F91601 F92407
from $116 Find flight	06:15 Philadelphia Philadelphia Int.	18:46 Seattle Seattle-Tacoma Intl	15h 31m layover 8h 16m - Denver	Frontier Airlines	F93339 F91175
from $126 Find flight	12:13 Philadelphia Philadelphia Int.	22:43 Seattle Seattle-Tacoma Intl	13h 30m layover 6h 54m - Minneapolis	Sun Country Airlines	SY1776 SY289
from $132 Find flight	06:30 Philadelphia Philadelphia Int.	15:53 Seattle Seattle-Tacoma Intl	12h 23m layover 4h 23m - Las Vegas	Spirit Airlines	NK905 NK781
from $148 Find flight	18:56 Philadelphia Philadelphia Int.	16:25+1 день Seattle Seattle-Tacoma Intl	24h 29m layover 16h 9m - Las Vegas	Spirit Airlines	NK1889 NK1681
from $151 Find flight	10:42 Philadelphia Philadelphia Int.	15:03+1 день Seattle Seattle-Tacoma Intl	31h 21m layover 23h 1m - Las Vegas	Spirit Airlines	NK2272 NK2327
from $155 Find flight	19:59 Philadelphia Philadelphia Int.	00:56+1 день Seattle Seattle-Tacoma Intl	7h 57m layover 0h 58m - Washington D.C.	United Airlines	UA4615 UA716
from $155 Find flight	17:15 Philadelphia Philadelphia Int.	22:20 Seattle Seattle-Tacoma Intl	8h 5m layover 0h 58m - Chicago	United Airlines	UA308 UA2211
from $154 Find flight	08:15 Philadelphia Philadelphia Int.	15:03+1 день Seattle Seattle-Tacoma Intl	33h 48m layover 7h 39m - Los Angeles 16h 8m - Las Vegas	Spirit Airlines	NK2596 NK2076 NK2327
from $154 Find flight	08:15 Philadelphia Philadelphia Int.	15:03+1 день Seattle Seattle-Tacoma Intl	33h 48m layover 11h 5m - Los Angeles 12h 41m - Las Vegas	Spirit Airlines	NK2596 NK2509 NK2327

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*Departure and arrival times - local. Prices indicated for one-way flights. Information updated on May 22, 2025

Flight Schedule Philadelphia (Pennsylvania) to Seattle (Washington)

Full flight schedule will help you in detecting at what time planes fly from Philadelphia to Seattle. 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
06:45 — 09:42	06:45 — 09:42 HA6428 Hawaiian Airlines Philadelphia — Seattle	5h 57m	Find flight from$183
07:20 — 10:12	07:20 — 10:12 HA6353 Hawaiian Airlines Philadelphia — Seattle	5h 52m	Find flight from$116
07:20 — 10:12	07:20 — 10:12 AS446 Alaska Airlines Philadelphia — Seattle	5h 52m	Find flight from$119
18:58 — 22:00	18:58 — 22:00 HA6429 Hawaiian Airlines Philadelphia — Seattle	6h 2m	Find flight from$116
18:58 — 22:00	18:58 — 22:00 AS443 Alaska Airlines Philadelphia — Seattle	6h 2m	Find flight from$119
06:15 — 00:34 +1 day	20:38 — 22:56 F93339 Frontier Airlines Philadelphia — Denver 14h 1m stop 17:17 — 19:27 F93405 Frontier Airlines Denver — Seattle	21h 19m including layover	Find flight from$91
06:15 — 18:46	06:15 — 08:28 F93339 Frontier Airlines Philadelphia — Denver 8h 16m stop 16:44 — 18:46 F91175 Frontier Airlines Denver — Seattle	15h 31m including layover	Find flight from$116
07:19 — 14:06	07:30 — 10:31 F91601 Frontier Airlines Philadelphia — Las Vegas 1h 36m stop 15:02 — 17:52 F92407 Frontier Airlines Las Vegas — Seattle	9h 47m including layover	Find flight from$87
09:55 — 17:57	09:55 — 12:02 UA1061 United Airlines Philadelphia — Denver 3h 59m stop 16:01 — 17:57 UA745 United Airlines Denver — Seattle	11h 2m including layover	Find flight from$165
09:55 — 15:52	09:55 — 12:02 UA1061 United Airlines Philadelphia — Denver 1h 54m stop 13:56 — 15:52 UA594 United Airlines Denver — Seattle	8h 57m including layover	Find flight from$178
10:10 — 17:49	10:10 — 12:17 UA2359 United Airlines Philadelphia — Denver 3h 33m stop 16:01 — 18:00 UA1254 United Airlines Denver — Seattle	10h 39m including layover	Find flight from$155
10:42 — 15:03 +1 day	10:42 — 13:15 NK2272 Spirit Airlines Philadelphia — Las Vegas 23h 1m stop 12:16 — 15:03 NK2327 Spirit Airlines Las Vegas — Seattle	31h 21m including layover	Find flight from$151
12:13 — 22:43	12:06 — 14:00 SY1776 Sun Country Airlines Philadelphia — Minneapolis 6h 54m stop 21:00 — 22:47 SY289 Sun Country Airlines Minneapolis — Seattle	13h 30m including layover	Find flight from$126
12:13 — 07:58 +1 day	12:06 — 14:00 SY1776 Sun Country Airlines Philadelphia — Minneapolis 16h 6m stop 06:12 — 07:59 SY281 Sun Country Airlines Minneapolis — Seattle	22h 45m including layover	Find flight from$173
13:02 — 18:46	07:00 — 09:38 F93265 Frontier Airlines Philadelphia — Denver 1h 23m stop 11:00 — 13:10 F91175 Frontier Airlines Denver — Seattle	8h 44m including layover	Find flight from$87
13:02 — 00:34 +1 day	13:02 — 15:21 F93265 Frontier Airlines Philadelphia — Denver 7h 8m stop 22:29 — 00:34 F93405 Frontier Airlines Denver — Seattle	14h 32m including layover	Find flight from$116
15:39 — 22:59	15:39 — 17:58 UA720 United Airlines Philadelphia — Denver 3h 2m stop 21:00 — 22:59 UA2651 United Airlines Denver — Seattle	10h 20m including layover	Find flight from$155
15:40 — 22:59	15:40 — 17:53 UA2175 United Airlines Philadelphia — Denver 3h 7m stop 21:00 — 22:59 UA2651 United Airlines Denver — Seattle	10h 19m including layover	Find flight from$156
17:15 — 22:20	16:38 — 18:10 UA308 United Airlines Philadelphia — Chicago 58m stop 19:55 — 22:44 UA2211 United Airlines Chicago — Seattle	8h 5m including layover	Find flight from$155
17:16 — 23:59	17:16 — 18:40 UA308 United Airlines Philadelphia — Chicago 2h 36m stop 21:16 — 23:59 UA2200 United Airlines Chicago — Seattle	9h 43m including layover	Find flight from$155
19:59 — 00:56 +1 day	19:59 — 21:08 UA4615 United Airlines Philadelphia — Washington D.C. 58m stop 22:06 — 00:56 UA716 United Airlines Washington D.C. — Seattle	7h 57m including layover	Find flight from$155
05:45 — 15:53	05:45 — 07:53 NK1062 Spirit Airlines Philadelphia — Atlanta 1h 20m stop 09:13 — 10:26 NK1202 Spirit Airlines Atlanta — Las Vegas 2h 44m stop 13:10 — 15:53 NK781 Spirit Airlines Las Vegas — Seattle	13h 8m including layover	Find flight from$174
08:15 — 15:03 +1 day	08:15 — 11:13 NK2596 Spirit Airlines Philadelphia — Los Angeles 7h 39m stop 18:52 — 20:08 NK2076 Spirit Airlines Los Angeles — Las Vegas 16h 8m stop 12:16 — 15:03 NK2327 Spirit Airlines Las Vegas — Seattle	33h 48m including layover	Find flight from$154
08:15 — 15:03 +1 day	08:15 — 11:13 NK2596 Spirit Airlines Philadelphia — Los Angeles 11h 5m stop 22:18 — 23:35 NK2509 Spirit Airlines Los Angeles — Las Vegas 12h 41m stop 12:16 — 15:03 NK2327 Spirit Airlines Las Vegas — Seattle	33h 48m including layover	Find flight from$154
14:38 — 15:03 +1 day	14:38 — 15:53 NK2246 Spirit Airlines Philadelphia — Nashville 3h 25m stop 19:18 — 21:25 NK2249 Spirit Airlines Nashville — Las Vegas 14h 51m stop 12:16 — 15:03 NK2327 Spirit Airlines Las Vegas — Seattle	27h 25m including layover	Find flight from$183
21:31 — 16:25 +1 day	21:31 — 00:15 NK1615 Spirit Airlines Philadelphia — Houston 6h 45m stop 07:00 — 08:14 NK1139 Spirit Airlines Houston — Las Vegas 5h 26m stop 13:40 — 16:25 NK1681 Spirit Airlines Las Vegas — Seattle	21h 54m including layover	Find flight from$175

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

*Departure and arrival times - local. Updated on May 22, 2025

Flight Information

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

Distance between Philadelphia and Seattle is 3817 miles. Time difference between the cities is 3h. Airplanes depart 05:45 to 21:31 from 4 Philadelphia airports and arrive 05:45 to 21:31 to 3 Seattle airports. Average flight time is 5h 57m.

The fastest flight 5h 52m
Average flight time 5h 57m
The earliest flight 05:45
The latest flight 21:31
Distance 2372 ml

The cheapest months to travel to Seattle are july (from 117 $), august (from 155 $), november (from 178 $).

The most expensive months are may (from 328 $), february (from 289 $), january (from 245 $).

What is the lowest airfare Philadelphia to Seattle?

The cheapest plane ticket found by our users is $87. This airfare is for economy class on one-way F91601 flight by Frontier Airlines for July 14, 2025 which leaves Philadelphia Int. in Philadelphia at 07:19 am and arrives at Seattle Seattle-Tacoma Intl at 14:06.

Economy class

$87

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Business class

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First class

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Popular Airlines on the Route

The flight Philadelphia — Seattle is served by 6 regular airlines and 3 low-cost airlines. Most of the flights on this route are operated by Alaska Airlines - 13 departures per week at the price of from $ 119 . And the most expensive tickets are offered by Alaska Airlines airline - from $ 4055.

Direct flights

There are 5 nonstop flights on the route. The fastest direct flight is HA6353 by Hawaiian Airlines takes 5h 52m and the cheapest is F91601 by Frontier Airlines for $116.

AS - Alaska Airlines

from $119

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HA - Hawaiian Airlines

from $116

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Connecting Flights

There are 228 flights with layovers on the route. The fastest connecting flight is SY1776 by Sun Country Airlines takes 7h 35m and the cheapest is F91601 by Frontier Airlines for $87.

AS - Alaska Airlines

from $3824

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F9 - Frontier Airlines

from $87

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SY - Sun Country Airlines

from $126

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UA - United Airlines

from $155

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NK - Spirit Airlines

from $132

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Airports

You can fly from Philadelphia to Seattle from 4 airports (Philadelphia Int., North Philadelphia, Mustin Alf, Philadelphia Sea Plane Base).

Philadelphia airports

Philadelphia Int.-PHL

from $87
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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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Seattle airports

Boeing Field International Airport-BFI

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Seattle-Tacoma Intl-SEA

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Kenmore Air Harbor SPB-LKE

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Airplanes

There are flights to Seattle from Philadelphia by 6 airlines that use 0 aircraft brands. They range from huge modern airplanes to small-sized.

Top Domestic Destinations from Philadelphia

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

Philadelphia — Orlando

from $62

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Philadelphia — Boston

from $54

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Philadelphia — Miami

from $78

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Philadelphia — Chicago

from $79

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Philadelphia — Atlanta

from $60

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Philadelphia — Denver

from $78

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Philadelphia — Las Vegas

from $64

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Philadelphia — Nashville

from $70

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Philadelphia — Houston

from $62

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Philadelphia — Charleston

from $64

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Top International Destinations from Philadelphia

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.

Philadelphia — Punta Cana

from $79

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Philadelphia — Rome

from $63

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Philadelphia — Paris

from $70

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Philadelphia — Dublin

from $67

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Philadelphia — San Juan

from $54

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Philadelphia — Aruba

from $63

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Philadelphia — Montreal

from $70

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Philadelphia — Amsterdam

from $79

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Philadelphia — Vancouver

from $69

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Philadelphia — Madrid

from $74

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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.
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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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