Cheap Flights from Philadelphia, PA to Seattle, WA from $76

One way Round trip

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On Cheapflightsplus.com you will find 2 direct and 629 connecting flights from Philadelphia to Seattle. You can compare airfare deals from 10 airlines and multiple travel sites from $76, 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: $76 (one-way), $130 (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 $76. The fastest direct flight takes 6h 5m and the fastest connecting – 7h 48m.

Price	Departure	Arrival	Flight Duration	Airline	Flight
from $314 Find flight	18:55 Philadelphia Philadelphia Int.	22:00 Seattle Seattle-Tacoma Intl	6h 5m	Alaska Airlines	AS443
from $76 Find flight	19:39 Philadelphia Philadelphia Int.	07:15+1 день Seattle Seattle-Tacoma Intl	14h 36m layover 7h 2m - Denver	Frontier Airlines	F93339 F91175
from $112 Find flight	13:19 Philadelphia Philadelphia Int.	21:11 Seattle Seattle-Tacoma Intl	10h 52m layover 3h 33m - Denver	Frontier Airlines	F93265 F93405
from $135 Find flight	22:59 Philadelphia Philadelphia Int.	10:30+1 день Seattle Seattle-Tacoma Intl	14h 31m layover 6h 29m - Boston	Frontier Airlines	F93012 B6497
from $142 Find flight	08:33 Philadelphia Philadelphia Int.	16:31 Seattle Seattle-Tacoma Intl	10h 58m layover 1h 51m - Los Angeles	Spirit Airlines	NK579 NK260
from $153 Find flight	07:25 Philadelphia Philadelphia Int.	16:23 Seattle Seattle-Tacoma Intl	11h 58m layover 3h 26m - Las Vegas	Spirit Airlines	NK905 NK203
from $175 Find flight	20:02 Philadelphia Philadelphia Int.	10:30+1 день Seattle Seattle-Tacoma Intl	17h 28m layover 9h 41m - Boston	JetBlue	B6760 B6497
from $175 Find flight	15:05 Philadelphia Philadelphia Int.	10:30+1 день Seattle Seattle-Tacoma Intl	22h 25m layover 14h 36m - Boston	JetBlue	B61160 B6497
from $175 Find flight	09:20 Philadelphia Philadelphia Int.	10:30+1 день Seattle Seattle-Tacoma Intl	28h 10m layover 20h 19m - Boston	JetBlue	B6360 B6497
from $149 Find flight	14:39 Philadelphia Philadelphia Int.	18:26+2 дня Seattle Seattle-Tacoma Intl	54h 47m layover 23h 24m - Orlando 20h 17m - Las Vegas	Frontier Airlines	F92505 F91727 F92407
from $180 Find flight	07:20 Philadelphia Philadelphia Int.	00:10+1 день Seattle Seattle-Tacoma Intl	19h 50m layover 5h 28m - Houston 3h 58m - Los Angeles	Spirit Airlines	NK2167 NK461 NK1490
from $184 Find flight	07:20 Philadelphia Philadelphia Int.	00:10+1 день Seattle Seattle-Tacoma Intl	19h 50m layover 1h 52m - Houston 7h 35m - Los Angeles	Spirit Airlines	NK2167 NK365 NK1490
from $191 Find flight	09:50 Philadelphia Philadelphia Int.	00:10+1 день Seattle Seattle-Tacoma Intl	17h 20m layover 3h 6m - Detroit 4h 31m - Los Angeles	Spirit Airlines	NK1012 NK304 NK1490
from $199 Find flight	08:33 Philadelphia Philadelphia Int.	00:15+1 день Seattle Seattle-Tacoma Intl	18h 42m layover 6h 9m - Los Angeles 2h 24m - Las Vegas	Spirit Airlines	NK579 NK911 NK181
from $199 Find flight	08:33 Philadelphia Philadelphia Int.	00:15+1 день Seattle Seattle-Tacoma Intl	18h 42m layover 3h 56m - Los Angeles 4h 36m - Las Vegas	Spirit Airlines	NK579 NK255 NK181
from $199 Find flight	06:45 Philadelphia Philadelphia Int.	23:10 Seattle Seattle-Tacoma Intl	19h 25m layover 6h 57m - Las Vegas 3h 3m - Los Angeles	Spirit Airlines	NK905 NK1495 NK804

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*Departure and arrival times - local. Prices indicated for one-way flights. Information updated on April 04, 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
07:15 — 10:26	07:15 — 10:26 AS370 Alaska Airlines Philadelphia — Seattle	6h 11m	Find flight from$327
18:55 — 22:00	18:55 — 22:00 AS443 Alaska Airlines Philadelphia — Seattle	6h 5m	Find flight from$314
06:00 — 10:30 +1 day	06:00 — 07:32 DL5740 Delta Air Lines Inc. Philadelphia — Boston 23h 28m stop 07:00 — 10:30 B6497 JetBlue Boston — Seattle	31h 30m including layover	Find flight from$202
07:25 — 16:23	07:25 — 10:07 NK905 Spirit Airlines Philadelphia — Las Vegas 3h 26m stop 13:33 — 16:23 NK203 Spirit Airlines Las Vegas — Seattle	11h 58m including layover	Find flight from$153
08:33 — 16:31	08:33 — 11:45 NK579 Spirit Airlines Philadelphia — Los Angeles 1h 51m stop 13:36 — 16:31 NK260 Spirit Airlines Los Angeles — Seattle	10h 58m including layover	Find flight from$142
09:20 — 10:30 +1 day	09:20 — 10:41 B6360 JetBlue Philadelphia — Boston 20h 19m stop 07:00 — 10:30 B6497 JetBlue Boston — Seattle	28h 10m including layover	Find flight from$175
10:10 — 16:16	10:10 — 11:41 UA2657 United Airlines Philadelphia — Chicago 1h 49m stop 13:30 — 16:16 UA1485 United Airlines Chicago — Seattle	9h 6m including layover	Find flight from$224
10:45 — 10:30 +1 day	10:45 — 12:10 DL5711 Delta Air Lines Inc. Philadelphia — Boston 18h 50m stop 07:00 — 10:30 B6497 JetBlue Boston — Seattle	26h 45m including layover	Find flight from$202
12:03 — 10:30 +1 day	12:03 — 13:30 AA2159 American Airlines Philadelphia — Boston 17h 30m stop 07:00 — 10:30 B6497 JetBlue Boston — Seattle	25h 27m including layover	Find flight from$211
13:19 — 21:11	13:19 — 15:35 F93265 Frontier Airlines Philadelphia — Denver 3h 33m stop 19:08 — 21:11 F93405 Frontier Airlines Denver — Seattle	10h 52m including layover	Find flight from$112
15:05 — 10:30 +1 day	15:05 — 16:24 B61160 JetBlue Philadelphia — Boston 14h 36m stop 07:00 — 10:30 B6497 JetBlue Boston — Seattle	22h 25m including layover	Find flight from$175
17:00 — 22:42	16:38 — 18:10 UA308 United Airlines Philadelphia — Chicago 1h 29m stop 19:55 — 22:44 UA2211 United Airlines Chicago — Seattle	8h 42m including layover	Find flight from$224
18:07 — 10:30 +1 day	18:07 — 19:42 DL5706 Delta Air Lines Inc. Philadelphia — Boston 11h 18m stop 07:00 — 10:30 B6497 JetBlue Boston — Seattle	19h 23m including layover	Find flight from$202
19:39 — 07:15 +1 day	20:38 — 22:56 F93339 Frontier Airlines Philadelphia — Denver 7h 2m stop 06:00 — 08:15 F91175 Frontier Airlines Denver — Seattle	14h 36m including layover	Find flight from$76
20:02 — 10:30 +1 day	20:02 — 21:19 B6760 JetBlue Philadelphia — Boston 9h 41m stop 07:00 — 10:30 B6497 JetBlue Boston — Seattle	17h 28m including layover	Find flight from$175
20:38 — 19:27 +1 day	20:38 — 22:56 F93339 Frontier Airlines Philadelphia — Denver 18h 21m stop 17:17 — 19:27 F93405 Frontier Airlines Denver — Seattle	25h 49m including layover	Find flight from$163
21:20 — 10:30 +1 day	21:20 — 22:44 AA2775 American Airlines Philadelphia — Boston 8h 16m stop 07:00 — 10:30 B6497 JetBlue Boston — Seattle	16h 10m including layover	Find flight from$211
22:59 — 10:30 +1 day	22:59 — 00:31 F93012 Frontier Airlines Philadelphia — Boston 6h 29m stop 07:00 — 10:30 B6497 JetBlue Boston — Seattle	14h 31m including layover	Find flight from$135
22:59 — 10:21 +1 day	22:59 — 00:31 F93012 Frontier Airlines Philadelphia — Boston 6h 29m stop 07:00 — 10:21 AS459 Alaska Airlines Boston — Seattle	14h 22m including layover	Find flight from$194
06:45 — 23:10	06:45 — 09:02 NK905 Spirit Airlines Philadelphia — Las Vegas 6h 57m stop 15:59 — 17:19 NK1495 Spirit Airlines Las Vegas — Los Angeles 3h 3m stop 20:22 — 23:10 NK804 Spirit Airlines Los Angeles — Seattle	19h 25m including layover	Find flight from$199
07:20 — 00:10 +1 day	07:20 — 10:11 NK2167 Spirit Airlines Philadelphia — Houston 5h 28m stop 15:39 — 17:27 NK461 Spirit Airlines Houston — Los Angeles 3h 58m stop 21:25 — 00:10 NK1490 Spirit Airlines Los Angeles — Seattle	19h 50m including layover	Find flight from$180
08:33 — 00:15 +1 day	08:33 — 11:45 NK579 Spirit Airlines Philadelphia — Los Angeles 6h 9m stop 17:54 — 19:04 NK911 Spirit Airlines Los Angeles — Las Vegas 2h 24m stop 21:28 — 00:15 NK181 Spirit Airlines Las Vegas — Seattle	18h 42m including layover	Find flight from$199
09:50 — 00:10 +1 day	09:50 — 11:37 NK1012 Spirit Airlines Philadelphia — Detroit 3h 6m stop 15:27 — 17:39 NK304 Spirit Airlines Detroit — Los Angeles 4h 31m stop 21:25 — 00:10 NK1490 Spirit Airlines Los Angeles — Seattle	17h 20m including layover	Find flight from$191
11:35 — 07:15 +1 day	11:35 — 13:32 DL2688 Delta Air Lines Inc. Philadelphia — Minneapolis 1h 29m stop 15:01 — 16:12 DL1025 Delta Air Lines Inc. Minneapolis — Denver 12h 52m stop 05:04 — 07:15 F91175 Frontier Airlines Denver — Seattle	22h 40m including layover	Find flight from$202
12:48 — 07:15 +1 day	12:48 — 14:36 DL2189 Delta Air Lines Inc. Philadelphia — Detroit 1h 45m stop 16:21 — 17:37 DL2431 Delta Air Lines Inc. Detroit — Denver 11h 27m stop 05:04 — 07:15 F91175 Frontier Airlines Denver — Seattle	21h 27m including layover	Find flight from$202
13:20 — 07:15 +1 day	13:20 — 15:30 DL2130 Delta Air Lines Inc. Philadelphia — Atlanta 1h 13m stop 16:43 — 18:02 DL519 Delta Air Lines Inc. Atlanta — Denver 11h 2m stop 05:04 — 07:15 F91175 Frontier Airlines Denver — Seattle	20h 55m including layover	Find flight from$202
14:39 — 18:26 +2 days	14:39 — 17:30 F92505 Frontier Airlines Philadelphia — Orlando 23h 24m stop 16:54 — 19:15 F91727 Frontier Airlines Orlando — Las Vegas 20h 17m stop 15:32 — 18:26 F92407 Frontier Airlines Las Vegas — Seattle	54h 47m including layover	Find flight from$149
14:45 — 11:55 +1 day	14:45 — 17:06 NK2170 Spirit Airlines Philadelphia — Atlanta 5h stop 22:06 — 23:41 NK332 Spirit Airlines Atlanta — Las Vegas 9h 23m stop 09:04 — 11:55 NK413 Spirit Airlines Las Vegas — Seattle	24h 10m including layover	Find flight from$217
15:14 — 07:15 +1 day	15:14 — 17:20 DL2415 Delta Air Lines Inc. Philadelphia — Atlanta 1h 25m stop 18:45 — 20:05 DL746 Delta Air Lines Inc. Atlanta — Denver 8h 59m stop 05:04 — 07:15 F91175 Frontier Airlines Denver — Seattle	19h 1m including layover	Find flight from$202
19:39 — 18:26 +2 days	19:39 — 22:02 F93339 Frontier Airlines Philadelphia — Denver 20h 31m stop 18:33 — 19:37 F94967 Frontier Airlines Denver — Las Vegas 19h 55m stop 15:32 — 18:26 F92407 Frontier Airlines Las Vegas — Seattle	49h 47m including layover	Find flight from$149

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 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 05:00 to 22:59 from 4 Philadelphia airports and arrive 05:00 to 22:59 to 3 Seattle airports. Average flight time is 6h 8m.

The fastest flight 6h 5m
Average flight time 6h 8m
The earliest flight 05:00
The latest flight 22:59
Distance 2372 ml

The cheapest months to travel to Seattle are november (from 76 $), february (from 112 $), january (from 142 $).

The most expensive months are december (from 180 $), january (from 142 $), february (from 112 $).

What is the lowest airfare Philadelphia to Seattle?

The cheapest plane ticket found by our users is $76. This airfare is for economy class on one-way F93339 flight by Frontier Airlines for November 12, 2024 which leaves Philadelphia Int. in Philadelphia at 19:39 am and arrives at Seattle Seattle-Tacoma Intl at 07:15.

Economy class

$76

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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 10 regular airlines and 4 low-cost airlines. Most of the flights on this route are operated by American Airlines - 150 departures per week at the price of from $ 211 . And the most expensive tickets are offered by Turkish Airlines airline - from $ 2441.

Direct flights

There are 2 nonstop flights on the route. The fastest direct flight is AS443 by Alaska Airlines takes 6h 5m and the cheapest is F93339 by Frontier Airlines for $314.

AS - Alaska Airlines

from $314

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Connecting Flights

There are 629 flights with layovers on the route. The fastest connecting flight is DL2688 by Delta Air Lines Inc. takes 7h 48m and the cheapest is F93339 by Frontier Airlines for $76.

AA - American Airlines

from $211

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F9 - Frontier Airlines

from $76

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B6 - JetBlue

from $175

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EI - Aer Lingus

from $1056

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SY - Sun Country Airlines

from $275

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TK - Turkish Airlines

from $1465

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DL - Delta Air Lines Inc.

from $202

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UA - United Airlines

from $224

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NK - Spirit Airlines

from $142

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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 $76
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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 10 airlines that use 10 aircraft brands. They range from huge modern airplanes to small-sized.

Boeing 737-100/200

from $135

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Embraer Lineage 1000

from $175

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Boeing 757-200

from $202

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Embraer 170

from $202

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Embraer 175 (short wing)

from $202

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Airbus A320

from $202

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Airbus A319

from $202

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Boeing 737-800

from $211

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Airbus A321

from $211

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Canadair Regional Jet 900

from $254

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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

Find

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.
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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