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Cheap flights from Pennsylvania to Seattle from $90

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Pennsylvania to Seattle departing on 1/19. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
1 adult
0 bags

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Cheap round-trip flights

Enter your travel dates to find the best prices.
Delta Logo
5:32 pm - 12:09 am
PIT
-
SEA
9h 37m1 stop
Delta Logo
5:30 am - 4:08 pm
SEA
-
PIT
7h 38m1 stop
$197Delta
Mon, Feb 2 - Thu, Feb 19
Hawaiian Airlines Logo
5:30 pm - 8:55 pm
EWR
-
SEA
6h 25mnonstop
Hawaiian Airlines Logo
7:45 am - 6:59 pm
SEA
-
EWR
8h 14m1 stop
$215Hawaiian Airlines
Wed, Feb 25 - Fri, Feb 27
American Airlines Logo
1:30 pm - 7:04 pm
EWR
-
SEA
8h 34m1 stop
American Airlines Logo
8:35 am - 7:52 pm
SEA
-
EWR
8h 17m1 stop
$216American Airlines
Sat, Jan 24 - Sat, Jan 31
United Airlines Logo
5:55 pm - 8:57 pm
IAD
-
SEA
6h 02mnonstop
United Airlines Logo
8:10 am - 4:16 pm
SEA
-
IAD
5h 06mnonstop
$216United Airlines
Wed, Jan 7 - Sat, Jan 10
United Airlines Logo
7:44 am - 11:06 am
EWR
-
SEA
6h 22mnonstop
United Airlines Logo
8:40 am - 9:45 pm
SEA
-
EWR
10h 05m1 stop
$217United Airlines
Sat, Jan 10 - Sun, Jan 18
Alaska Airlines Logo
7:29 pm - 10:54 pm
EWR
-
SEA
6h 25mnonstop
Alaska Airlines Logo
7:45 am - 6:59 pm
SEA
-
EWR
8h 14m1 stop
$218Alaska Airlines
Sat, Feb 14 - Fri, Feb 20
Alaska Airlines Logo
8:59 am - 5:29 pm
DCA
-
SEA
11h 30m1 stop
Alaska Airlines Logo
8:50 pm - 5:56 pm
SEA
-
DCA
18h 06m1 stop
$218Alaska Airlines
Thu, Jan 8 - Mon, Jan 12
Southwest Logo
5:45 pm - 10:30 pm
PIT
-
SEA
7h 45m1 stop
Southwest Logo
5:15 am - 3:00 pm
SEA
-
PIT
6h 45m1 stop
$219Southwest
Tue, Jan 6 - Sat, Jan 10
Southwest Logo
5:45 pm - 10:30 pm
PIT
-
SEA
7h 45m1 stop
Southwest Logo
6:05 am - 8:00 pm
SEA
-
PIT
10h 55m2 stops
$224Southwest
Tue, Jan 6 - Tue, Jan 13
American Airlines Logo
5:09 pm - 10:20 pm
MDT
-
SEA
8h 11m1 stop
American Airlines Logo
12:45 pm - 11:58 pm
SEA
-
MDT
8h 13m1 stop
$238American Airlines
Sat, Jan 10 - Sat, Jan 17

Alaska Airlines flights from Pennsylvania to Seattle

Our best Alaska Airlines deals on Pennsylvania to Seattle flight tickets
Alaska Airlines
Jan 22
PIT7:00 amPittsburgh
5h 32m
SEA9:32 amSeattle/Tacoma Intl
Jan 26
SEA11:10 amSeattle/Tacoma Intl
4h 36m
PIT6:46 pmPittsburgh
$197
Find similar
Alaska Airlines
Jan 8
DCA6:56 pmWashington, D.C. Reagan-National
17h 22m
1 stop
SEA9:18 amSeattle/Tacoma Intl
Jan 14
SEA8:06 amSeattle/Tacoma Intl
8h 54m
1 stop
DCA8:00 pmWashington, D.C. Reagan-National
$218
Find similar
Alaska Airlines
Feb 17
EWR7:29 pmNewark
6h 25m
SEA10:54 pmSeattle/Tacoma Intl
Feb 20
SEA10:09 amSeattle/Tacoma Intl
5h 19m
EWR6:28 pmNewark
$219
Find similar

United Airlines flights from Pennsylvania to Seattle

Our best United Airlines deals on Pennsylvania to Seattle flight tickets
United Airlines
Jan 7
IAD5:55 pmWashington, D.C. Dulles Intl
6h 02m
SEA8:57 pmSeattle/Tacoma Intl
Jan 10
SEA8:10 amSeattle/Tacoma Intl
5h 06m
IAD4:16 pmWashington, D.C. Dulles Intl
$216
Find similar
United Airlines
Jan 10
EWR7:44 amNewark
6h 22m
SEA11:06 amSeattle/Tacoma Intl
Jan 18
SEA8:40 amSeattle/Tacoma Intl
10h 05m
1 stop
EWR9:45 pmNewark
$217
Find similar
United Airlines
Feb 5
IAD5:55 pmWashington, D.C. Dulles Intl
6h 02m
SEA8:57 pmSeattle/Tacoma Intl
Feb 9
SEA8:10 amSeattle/Tacoma Intl
5h 06m
IAD4:16 pmWashington, D.C. Dulles Intl
$218
Find similar

momondo Fare Finder

 
Customize your flight search to find flights from Pennsylvania to Seattle that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, momondo users made 832,500 searches. Data last updated December 11, 2025.
Use the filters below to find and compare flights from Pennsylvania to Seattle that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

PittsburghSeattle

PIT - SEA

PITSEA

Pittsburgh

Mon 2/2

5:32 pm-12:09 am

1 stop9h 37m

Seattle/Tacoma Intl

Thu 2/19

5:30 am-4:08 pm

1 stop7h 38m

$197

NewarkSeattle

EWR - SEA

EWRSEA

Newark

Wed 2/25

5:30 pm-8:55 pm

Nonstop6h 25m

Seattle/Tacoma Intl

Fri 2/27

7:45 am-6:59 pm

1 stop8h 14m

$215

NewarkSeattle

EWR - SEA

EWRSEA

Newark

Sat 1/24

1:30 pm-7:04 pm

1 stop8h 34m

Seattle/Tacoma Intl

Sat 1/31

8:35 am-7:52 pm

1 stop8h 17m

$216

Washington, D.C.Seattle

IAD - SEA

IADSEA

Washington, D.C. Dulles Intl

Wed 1/7

5:55 pm-8:57 pm

Nonstop6h 02m

Seattle/Tacoma Intl

Sat 1/10

8:10 am-4:16 pm

Nonstop5h 06m

$216

NewarkSeattle

EWR - SEA

EWRSEA

Newark

Sat 1/10

7:44 am-11:06 am

Nonstop6h 22m

Seattle/Tacoma Intl

Sun 1/18

8:40 am-9:45 pm

1 stop10h 05m

$217

NewarkSeattle

EWR - SEA

EWRSEA

Newark

Sat 2/14

7:29 pm-10:54 pm

Nonstop6h 25m

Seattle/Tacoma Intl

Fri 2/20

7:45 am-6:59 pm

1 stop8h 14m

$218

Washington, D.C.Seattle

DCA - SEA

DCASEA

Washington, D.C. Reagan-National

Thu 1/8

8:59 am-5:29 pm

1 stop11h 30m

Seattle/Tacoma Intl

Mon 1/12

8:50 pm-5:56 pm

1 stop18h 06m

$218

PittsburghSeattle

PIT - SEA

PITSEA

Pittsburgh

Tue 1/6

5:45 pm-10:30 pm

1 stop7h 45m

Seattle/Tacoma Intl

Sat 1/10

5:15 am-3:00 pm

1 stop6h 45m

$219

PittsburghSeattle

PIT - SEA

PITSEA

Pittsburgh

Tue 1/6

5:45 pm-10:30 pm

1 stop7h 45m

Seattle/Tacoma Intl

Tue 1/13

6:05 am-8:00 pm

2 stops10h 55m

$224

HarrisburgSeattle

MDT - SEA

MDTSEA

Harrisburg

Sat 1/10

5:09 pm-10:20 pm

1 stop8h 11m

Seattle/Tacoma Intl

Sat 1/17

12:45 pm-11:58 pm

1 stop8h 13m

$238

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first
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See travel insights to Seattle from

How to get the cheapest flight ticket from Pennsylvania to Seattle

Look no further. We've gone through all the searches for this route on momondo so you have the important information and insights to find the cheapest flight ticket for your trip

What is the cheapest month to fly to Seattle?

In general, October is the cheapest month to fly from Pennsylvania to Seattle. Due to it being the ‘off-season’ during this time, you can expect flight prices to be around $317. If you don’t want to visit Seattle in October, then you should wait until February to fly from Pennsylvania, when ticket prices are also cheap, with an average price of $356.

What is the cheapest day to depart on your flight to Seattle?

On average, the least expensive day to fly to Seattle from Pennsylvania is on a Wednesday. momondo users have found tickets for Wednesday departures for as low as $465. However, this price may fluctuate depending on the airline, the season, and holidays. On the other hand, Sunday is the most expensive day to depart from Pennsylvania because it is more convenient for both business and leisure travelers. As a result, prices tend to be around $600.

What is the cheapest time of day to depart on your flight to Seattle?

Flying to Seattle from Pennsylvania at noon is the least expensive time of day to depart. momondo users have found prices as low as $416 when looking at flights departing at noon. Flights to Seattle are more costly in the morning, with an average ticket price of $520. Departure times in the morning fall within the peak daily travel times, which is why tickets can be more expensive.

What is the cheapest Pennsylvania to Seattle/Tacoma Intl flight route?

Fly from Pittsburgh to Seattle/Tacoma Intl for the best Pennsylvania - Seattle/Tacoma Intl flight prices

How far in advance should I book a flight to Seattle?

You are more likely to see cheaper flights to Seattle from Pennsylvania when booking weeks ahead of your departure date. In general, you can expect to find flights to Seattle for around $415 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Seattle from Pennsylvania for as low as $380 on momondo.

What cabin class options are available on Pennsylvania to Seattle/Tacoma Intl flights?

There are 4 cabin classes available to choose from on Pennsylvania to Seattle/Tacoma Intl flights. Cabin price and availability will vary by airline so perform a search above to find the right deals for you.

Can stopping save me money on Pennsylvania to Seattle flights?

You could potentially save up to 20% on your flight if you consider stops on a Pennsylvania to Seattle flight.

Cheap Pennsylvania to Seattle flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from Pennsylvania to Seattle

Best Price Found

$181

Fastest flight time

5h 20m

Direct flights

Every day

Airports in Seattle

1 airport
The best one-way flight to Seattle from Pennsylvania in the past 72 hours is $181. The best round-trip flight deal from Pennsylvania to Seattle found on momondo in the last 72 hours is $297.
The fastest flight from Pennsylvania to Seattle takes 5h 20m
Direct flights go from Pennsylvania to Seattle every day.
There is 1 airport in Seattle. From Pennsylvania there are direct flights to Seattle/Tacoma Intl (SEA).
Search flight deals

  • When did momondo last update prices for flights from Pennsylvania to Seattle/Tacoma Intl Airport?

    Prices for flights from Pennsylvania to Seattle/Tacoma Intl Airport are refreshed on a daily basis.

  • How many operators does momondo search for flights from Pennsylvania to Seattle/Tacoma Intl Airport?

  • How old do you have to be to fly from Pennsylvania to Seattle/Tacoma Intl Airport?

    Although the minimum age for a child to fly alone is five, airlines that offer an unaccompanied minor (UMNR) service may have their own age limits, which could be impacted by factors such as flight length, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from Pennsylvania to Seattle/Tacoma Intl Airport.

  • What documentation or ID do you need to fly to Seattle/Tacoma Intl Airport?

    The required travel and health documents for your Seattle/Tacoma Intl Airport trip may vary depending on your itinerary and personal circumstances. As a general rule, you should carry multiple documents, including a national ID card or driver's license and a passport valid for six months after your intended arrival at Seattle/Tacoma Intl Airport. We recommend that you seek guidance from your airline or a reliable third party such as IATA.

  • What is the most popular plane model from Pennsylvania to Seattle?

Best airlines flying from Pennsylvania to Seattle

Compare and see reviews for airlines that fly from Pennsylvania to Seattle with momondo
Airline
Rating
Free Cancellation
Price
FrontierPriceFrom $99Free CancellationRating
5.8
3,084 reviews
Search Frontier flights
Spirit AirlinesPriceFrom $115Free CancellationRating
6.3
8,180 reviews
Search Spirit Airlines flights
SouthwestPriceFrom $178Free CancellationRating
7.9
4,253 reviews
Search Southwest flights
American AirlinesPriceFrom $178Free CancellationRating
7.2
11,049 reviews
Search American Airlines flights
DeltaPriceFrom $193Free CancellationRating
7.9
8,007 reviews
Search Delta flights
United AirlinesPriceFrom $231Free CancellationRating
7.4
9,095 reviews
Search United Airlines flights
Hawaiian AirlinesPriceFrom $235Free CancellationRating
7.8
2,817 reviews
Search Hawaiian Airlines flights
Sun Country AirPriceFrom $238Free CancellationRating
6.9
333 reviews
Search Sun Country Air flights
Alaska AirlinesPriceFrom $238Free CancellationRating
8.0
11,432 reviews
Search Alaska Airlines flights

Traveling to a place near Seattle?

Book flights to Seattle if you plan to visit one of these locations
Tacoma
Leavenworth
SeaTac
Ocean Shores
Renton
Olympia
Lynnwood
Kent
Puyallup
Marysville
Redmond
Tukwila
Cle Elum
Federal Way
Lakewood
Fife
Westport
Kirkland
Centralia
Shoreline

Why use momondo?

Why should I use momondo to find a flight deal from Pennsylvania to Seattle?

We help find the flight that best suits your needs, momondo compares prices from hundreds of airlines and travel agents and helps you filter them to find the best flight from Pennsylvania to Seattle for you.

Can I find flights from Pennsylvania to Seattle with flexible booking policies on momondo?

Yes. momondo enables you to select and highlight flights to Seattle from Pennsylvania with this policy.

How can momondo help me find flights from Pennsylvania to Seattle?

Once you have performed a search for Pennsylvania to Seattle flights, momondo helps you find the right one by offering useful filters to narrow down your flight selection. Flights can be filtered by multiple factors such as airline, airport and price; but also by other criteria like aircraft type and payment method.

I’m not ready to book a flight from Pennsylvania to Seattle right now. Can momondo alert me if prices change?

Yes momondo offers price alerts on flights to Seattle from Pennsylvania. After performing a search on this page you should be able to see the price alert set up feature. Simply provide a valid email address and momondo will instantly alert you when prices change.

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