SEA

$82 Find Cheap Flights from Pennsylvania to Seattle

This is the cheapest one-way flight price found by a KAYAK user in the last 72 hours by searching for a flight to Seattle departing on 4/21. Fares are subject to change and may not be available on all flights or dates of travel. Click the price to replicate the search for this deal.
1 adult
1 adult, Economy, 0 bags

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Flight Deals

Cheap Flights from Pennsylvania to Seattle

 
Here are some of the best deals found on KAYAK recently from the most popular airlines for round-trip flights from Pennsylvania to Seattle that are departing in the next months. While these flights were available on KAYAK in the last 72 hours, prices and availability are subject to change and deals may expire.
Discover the best prices for you by selecting your travel dates on KAYAK.

Recent round-trip flight deals from Pennsylvania to Seattle

mié., abr. 15 - mar., abr. 21
Frontier Logo
6:00 pm - 9:27 am
DCA
-
SEA
18h 27m
1 stop
Frontier Logo
7:12 pm - 9:59 pm
SEA
-
DCA
23h 47m
1 stop
$197Frontier
mar., abr. 21 - mar., abr. 28
United Airlines Logo
5:55 pm - 8:53 pm
IAD
-
SEA
5h 58mnonstop
United Airlines Logo
8:00 am - 4:11 pm
SEA
-
IAD
5h 11mnonstop
$198United Airlines
mié., abr. 22 - mié., may. 6
Alaska Airlines Logo
7:20 pm - 10:05 pm
IAD
-
SEA
5h 45mnonstop
Alaska Airlines Logo
3:55 pm - 12:09 am
SEA
-
IAD
5h 14mnonstop
$199Alaska Airlines
mar., abr. 14 - lun., abr. 27
Delta Logo
5:34 pm - 9:49 pm
DCA
-
SEA
7h 15m
1 stop
Delta Logo
10:40 pm - 10:19 am
SEA
-
DCA
8h 39m
1 stop
$199Delta
dom., may. 3 - mar., may. 5
Southwest Logo
8:15 pm - 12:10 am
PIT
-
SEA
6h 55m
1 stop
Southwest Logo
9:20 am - 10:55 pm
SEA
-
PIT
10h 35m
1 stop
$200Southwest
sáb., abr. 25 - lun., may. 11
Southwest Logo
3:55 pm - 10:00 pm
IAD
-
SEA
9h 05m
1 stop
Southwest Logo
6:30 am - 12:20 am
SEA
-
IAD
14h 50m
2 stops
$204Southwest
sáb., abr. 4 - mié., abr. 15
Hawaiian Airlines Logo
7:00 am - 9:53 am
IAD
-
SEA
5h 53mnonstop
Hawaiian Airlines Logo
9:40 pm - 5:40 am
SEA
-
IAD
5h 00mnonstop
$207Hawaiian Airlines
sáb., abr. 25 - vie., may. 1
Delta Logo
6:00 am - 10:32 am
IAD
-
SEA
7h 32m
1 stop
Delta Logo
3:59 pm - 11:55 pm
SEA
-
IAD
4h 56mnonstop
$208Delta
sáb., abr. 25 - sáb., may. 2
Alaska Airlines Logo
9:00 am - 11:47 am
IAD
-
SEA
5h 47mnonstop
Alaska Airlines Logo
10:00 am - 6:20 pm
SEA
-
IAD
5h 20mnonstop
$216Alaska Airlines
sáb., abr. 4 - mié., abr. 15
Hawaiian Airlines Logo
7:20 am - 10:29 am
EWR
-
SEA
6h 09mnonstop
Hawaiian Airlines Logo
9:38 pm - 6:00 am
SEA
-
EWR
5h 22mnonstop
$256Hawaiian Airlines
Useful Info

Good to know

Low seasonJanuary
Cheapest flight$82
Best time to beat the crowds with an average 16% drop in price.
Most popular time to fly with an average 15% increase in price.
Flight from Philadelphia to Seattle

Flights from Pennsylvania to Seattle: the best tips from KAYAK users

Insights shared by verified travelers who flew the route from Pennsylvania to Seattle 
Learn how KAYAK collects reviews and tips from users.
JohnFlew with Alaska Airlines
PIT
-
SEA
Jan 2025
They HOT tag your luggage if you have a connecting flight with a short layover, so any time you need to connect from Seattle on a subsequent flight just check to make sure your luggage is handled that way. While I was on board looking out the window, I saw my suitcase being loaded last - LIFO planning so that it would be unloaded first for my connection. Smooth sailing after that…. Great service!
Verified travelerFlew with Alaska Airlines
PIT
-
SEA
Oct 2024
Early Wednesday mornings must be the prime time to board because there was no time to stash my watch, etc. into my bag before security since there was almost NO line. Another bonus for morning people.

FAQs for booking flights from Pennsylvania to Seattle

  • How does KAYAK find such low prices on flights from Pennsylvania to Seattle?

    KAYAK is a travel search engine. That means we look across the web to find the best prices we can find for our users. With over 2 billion flight queries processed yearly, we are able to display a variety of prices and options on flights from Pennsylvania to Seattle.

  • How does KAYAK's flight Price Forecast tool help me choose the right time to buy my flight ticket from Pennsylvania to Seattle?

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to Seattle from Pennsylvania is likely to change within 7 days, so travelers know whether to wait or book now.

  • What is the Hacker Fare option on flights from Pennsylvania to Seattle?

    Hacker Fares allow you to combine one-way tickets in order to save you money over a traditional round-trip ticket. You could then fly to Seattle with an airline and back to Pennsylvania with another airline.

  • What is KAYAK's "flexible dates" feature and why should I care when looking for a flight from Pennsylvania to Seattle?

    Sometimes travel dates aren't set in stone. If your preferred travel dates have some wiggle room, flexible dates will show you all the options when flying to Seattle from Pennsylvania up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

Traveling to a place near Seattle?

Book flights to Seattle if you plan to visit one of these locations
Lynnwood
Centralia
Fife
Lakewood
Westport
Mukilteo
Lacey
Edmonds
Aberdeen
Poulsbo
Woodinville
Shoreline
DuPont
Monroe
Castle Rock
Edgewood

Everything you need to know for your flight to Seattle

Information on the airport you'll fly into in Seattle

Seattle (SEA)