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Cheap flights from Harrisburg to Seattle from $130

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Harrisburg to Seattle departing on 12/4. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
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0 bags

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Find the cheapest flights from Harrisburg to Seattle

Cheap round-trip flights

Enter your travel dates to find the best prices.
American Airlines Logo
6:01 am - 1:55 pmMDT-SEA
10h 54m1 stop
American Airlines Logo
10:58 pm - 10:42 amSEA-MDT
8h 44m1 stop
$259American Airlines
Find Deal
Sun, Dec 7 - Fri, Dec 12
United Airlines Logo
10:45 am - 4:07 pmMDT-SEA
8h 22m1 stop
United Airlines Logo
7:34 pm - 9:30 amSEA-MDT
10h 56m2 stops
$264United Airlines
Find Deal
Wed, Dec 3 - Wed, Dec 10
United Airlines Logo
3:00 pm - 10:28 pmMDT-SEA
10h 28m2 stops
United Airlines Logo
5:00 am - 4:53 pmSEA-MDT
8h 53m2 stops
$269United Airlines
Find Deal
Sat, Dec 6 - Sat, Dec 13
American Airlines Logo
5:00 am - 12:47 pmMDT-SEA
10h 47m1 stop
American Airlines Logo
12:38 am - 11:13 amSEA-MDT
7h 35m1 stop
$278American Airlines
Find Deal
Sat, Dec 6 - Fri, Dec 12
American Airlines Logo
5:00 am - 1:06 pmMDT-SEA
11h 06m2 stops
American Airlines Logo
12:38 am - 11:13 amSEA-MDT
7h 35m1 stop
$283American Airlines
Find Deal
Sat, Dec 6 - Fri, Dec 12
United Airlines Logo
6:30 am - 11:32 amMDT-SEA
8h 02m1 stop
United Airlines Logo
7:30 pm - 9:35 amSEA-MDT
11h 05m2 stops
$289United Airlines
Find Deal
Tue, Jan 6 - Sun, Jan 11
Alaska Airlines Logo
3:16 pm - 9:47 pmMDT-SEA
9h 31m1 stop
Alaska Airlines Logo
11:45 am - 11:48 pmSEA-MDT
9h 03m1 stop
$359Alaska Airlines
Find Deal
Sat, Feb 28 - Tue, Mar 3
Delta Logo
6:00 am - 10:38 amMDT-SEA
7h 38m1 stop
Delta Logo
6:05 am - 10:56 pmSEA-MDT
13h 51m1 stop
$373Delta
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Thu, Jan 8 - Sun, Jan 11
Alaska Airlines Logo
2:55 pm - 10:30 pmMDT-SEA
10h 35m1 stop
Alaska Airlines Logo
6:00 am - 4:09 pmSEA-MDT
7h 09m1 stop
$439Alaska Airlines
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Thu, Nov 20 - Mon, Nov 24
Delta Logo
6:00 am - 10:40 amMDT-SEA
7h 40m1 stop
Delta Logo
9:45 am - 11:13 pmSEA-MDT
10h 28m2 stops
$457Delta
Find Deal
Sun, Dec 7 - Fri, Dec 12

American Airlines flights from Harrisburg to Seattle

Our best American Airlines deals on Harrisburg to Seattle flight tickets
American Airlines
Dec 7
MDT6:01 amHarrisburg
10h 54m
1 stop
SEA1:55 pmSeattle/Tacoma Intl
Dec 12
SEA10:58 pmSeattle/Tacoma Intl
8h 44m
1 stop
MDT10:42 amHarrisburg
$259
Find similar
American Airlines
Dec 6
MDT5:00 amHarrisburg
10h 47m
1 stop
SEA12:47 pmSeattle/Tacoma Intl
Dec 12
SEA12:38 amSeattle/Tacoma Intl
7h 35m
1 stop
MDT11:13 amHarrisburg
$278
Find similar
American Airlines
Dec 6
MDT5:00 amHarrisburg
11h 06m
2 stops
SEA1:06 pmSeattle/Tacoma Intl
Dec 12
SEA12:38 amSeattle/Tacoma Intl
7h 35m
1 stop
MDT11:13 amHarrisburg
$283
Find similar

Alaska Airlines flights from Harrisburg to Seattle

Our best Alaska Airlines deals on Harrisburg to Seattle flight tickets
Alaska Airlines
Feb 28
MDT3:16 pmHarrisburg
9h 31m
1 stop
SEA9:47 pmSeattle/Tacoma Intl
Mar 3
SEA11:45 amSeattle/Tacoma Intl
9h 03m
1 stop
MDT11:48 pmHarrisburg
$359
Find similar
Alaska Airlines
Nov 20
MDT2:55 pmHarrisburg
10h 35m
1 stop
SEA10:30 pmSeattle/Tacoma Intl
Nov 24
SEA6:00 amSeattle/Tacoma Intl
7h 09m
1 stop
MDT4:09 pmHarrisburg
$439
Find similar
Alaska Airlines
Nov 20
MDT2:55 pmHarrisburg
10h 35m
1 stop
SEA10:30 pmSeattle/Tacoma Intl
Nov 23
SEA12:25 amSeattle/Tacoma Intl
7h 44m
1 stop
MDT11:09 amHarrisburg
$568
Find similar

momondo Fare Finder

 
Customize your flight search to find flights from Harrisburg 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 November 6, 2025.
Use the filters below to find and compare flights from Harrisburg to Seattle that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

HarrisburgSeattle

MDT - SEA

MDTSEA

Harrisburg

Sun 12/7

6:01 am-1:55 pm

1 stop10h 54m

Seattle/Tacoma Intl

Fri 12/12

10:58 pm-10:42 am

1 stop8h 44m

$259

HarrisburgSeattle

MDT - SEA

MDTSEA

Harrisburg

Wed 12/3

10:45 am-4:07 pm

1 stop8h 22m

Seattle/Tacoma Intl

Wed 12/10

7:34 pm-9:30 am

2 stops10h 56m

$264

HarrisburgSeattle

MDT - SEA

MDTSEA

Harrisburg

Sat 12/6

3:00 pm-10:28 pm

2 stops10h 28m

Seattle/Tacoma Intl

Sat 12/13

5:00 am-4:53 pm

2 stops8h 53m

$269

HarrisburgSeattle

MDT - SEA

MDTSEA

Harrisburg

Sat 12/6

5:00 am-12:47 pm

1 stop10h 47m

Seattle/Tacoma Intl

Fri 12/12

12:38 am-11:13 am

1 stop7h 35m

$278

HarrisburgSeattle

MDT - SEA

MDTSEA

Harrisburg

Sat 12/6

5:00 am-1:06 pm

2 stops11h 06m

Seattle/Tacoma Intl

Fri 12/12

12:38 am-11:13 am

1 stop7h 35m

$283

HarrisburgSeattle

MDT - SEA

MDTSEA

Harrisburg

Tue 1/6

6:30 am-11:32 am

1 stop8h 02m

Seattle/Tacoma Intl

Sun 1/11

7:30 pm-9:35 am

2 stops11h 05m

$289

HarrisburgSeattle

MDT - SEA

MDTSEA

Harrisburg

Sat 2/28

3:16 pm-9:47 pm

1 stop9h 31m

Seattle/Tacoma Intl

Tue 3/3

11:45 am-11:48 pm

1 stop9h 03m

$359

HarrisburgSeattle

MDT - SEA

MDTSEA

Harrisburg

Thu 1/8

6:00 am-10:38 am

1 stop7h 38m

Seattle/Tacoma Intl

Sun 1/11

6:05 am-10:56 pm

1 stop13h 51m

$373

HarrisburgSeattle

MDT - SEA

MDTSEA

Harrisburg

Thu 11/20

2:55 pm-10:30 pm

1 stop10h 35m

Seattle/Tacoma Intl

Mon 11/24

6:00 am-4:09 pm

1 stop7h 09m

$439

HarrisburgSeattle

MDT - SEA

MDTSEA

Harrisburg

Sun 12/7

6:00 am-10:40 am

1 stop7h 40m

Seattle/Tacoma Intl

Fri 12/12

9:45 am-11:13 pm

2 stops10h 28m

$457

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 Harrisburg 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 typical price of a round-trip flight between Harrisburg and Seattle?

What is the cheapest month to fly to Seattle?

In general, February is the cheapest month to fly from Harrisburg to Seattle. Due to it being the ‘off-season’ during this time, you can expect flight prices to be around $372. If you don’t want to visit Seattle in February, then you should wait until March to fly from Harrisburg, when ticket prices are also cheap, with an average price of $386.

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

On average, the least expensive day to fly to Seattle from Harrisburg is on a Wednesday. momondo users have found tickets for Wednesday departures for as low as $508. However, this price may fluctuate depending on the airline, the season, and holidays. On the other hand, Monday is the most expensive day to depart from Harrisburg because it is more convenient for both business and leisure travelers. As a result, prices tend to be around $643.

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

Flying to Seattle from Harrisburg at noon is the least expensive time of day to depart. momondo users have found prices as low as $454 when looking at flights departing at noon. Flights to Seattle are more costly in the morning, with an average ticket price of $578. Departure times in the morning fall within the peak daily travel times, which is why tickets can be more expensive.

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

Fly from Harrisburg to Seattle/Tacoma Intl for the best Harrisburg - 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 Harrisburg when booking weeks ahead of your departure date. In general, you can expect to find flights to Seattle for around $484 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Seattle from Harrisburg for as low as $345 on momondo.

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

There is only 1 cabin class available to choose from on Harrisburg 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 Harrisburg to Seattle flights?

You could potentially save up to 15% on your flight if you consider stops on a Harrisburg to Seattle flight.

How have Harrisburg to Seattle flight prices changed over time?

As of November 2025, prices for Harrisburg to Seattle flights are approximately 29% more expensive when compared to flights at the same time last year.

When to book flights from Harrisburg to Seattle

Are you open to changing your travel dates? Check out the ideal times to fly from Harrisburg to Seattle according to our flight data. Find out which month and days have the cheapest flights.
Estimated round-trip price

Cheap Harrisburg to Seattle (MDT to SEA) flight deals and tips

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

Direct flights

None
There are no direct flights from Harrisburg to Seattle. There are no popular flight routes from Harrisburg to Seattle.
Search flight deals

  • How far is Harrisburg to Seattle/Tacoma Intl by plane?

    The straight-line distance from Harrisburg to Seattle/Tacoma Intl is 2281.5 mi. A reasonable flight in good conditions will take 7h 38m.

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

    Prices for flights from Harrisburg Airport to Seattle/Tacoma Intl Airport are updated daily.

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

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

    The minimum age a child must be to fly alone is five but airlines that offer an unaccompanied minor (UNMR) service will have their own age restrictions, including rules around flight length, timings, and stopovers. We always recommend checking with the individual airline you are booking with to travel from Harrisburg Airport to Seattle/Tacoma Intl Airport.

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

    The travel and health documents required for your trip to Seattle/Tacoma Intl Airport can vary based on your itinerary and personal situation. As a rule, consider having multiple documents such as a national ID card or driver’s license, and a passport valid for six-months after you plan to arrive at Seattle/Tacoma Intl Airport. We always recommend checking with your airline or a trusted third party such as IATA to get advice.

  • What is the most popular airline from Harrisburg to Seattle?

Best airlines flying from Harrisburg to Seattle

Compare and see reviews for airlines that fly from Harrisburg to Seattle with momondo
Airline
Rating
Free Cancellation
Price
United AirlinesPriceFrom $286Free CancellationRating
7.4
9,007 reviews
Search United Airlines flights
DeltaPriceFrom $286Free CancellationRating
7.9
8,001 reviews
Search Delta flights
American AirlinesPriceFrom $296Free CancellationRating
7.2
11,040 reviews
Search American Airlines flights
Alaska AirlinesPriceFrom $427Free CancellationRating
8.0
11,247 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
Lakewood
Federal Way
Fife
Cle Elum
Centralia
Kirkland
Westport
Shoreline

Why use momondo?

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

momondo collates all your flight options in one place and lets you filter them to find the perfect flight from Harrisburg to Seattle. momondo saves you time and could save you money on your trip.

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

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

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

momondo provides multiple filters to help you find the best flight to Seattle from Harrisburg. Filter by price, airline, airports, cabin, aircraft, payment method, number of stops and more.

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

Of course. momondo tracks the price of Harrisburg to Seattle flights. All you need is a valid email address and we will do the rest; it is that quick and easy.

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