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$179+ Cheap flights from Seattle to Harrisburg (SEA - MDT)

This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 12/17. Fares are subject to change and may not be available on all flights or dates of travel.
SEA — MDT
oct. 11 — oct. 181
sáb. 10/11
sáb. 10/18
1 adult, Economy
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Cheapflights Tip: The best prices from Seattle/Tacoma Intl to Harrisburg are usually found in April or February, booked 79 days in advance, depart on a Wednesday or Tuesday and return on a Wednesday

Cheap flight deals from Seattle to Harrisburg

Discover tips and strategies to find the most affordable flight options for your journey from Seattle (SEA) to Harrisburg (MDT). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated septiembre 11, 2025.

Round-trip from

$277
(American Airlines)

One-way from

$179
(American Airlines)

Popular in

March

Cheapest in

April

Average price

$615
From Seattle/Tacoma Intl to Harrisburg
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One-way flight from Seattle/Tacoma Intl to Harrisburg
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Highest demand for flights based on searches. 3% potential increase in price ($17 potential increase over avg. RT price).
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Cheapest flight prices on average. 5% potential price decrease ($30 potential savings vs. average RT price).
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Average for round-trip flights in September 2025
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Find flight deals from Seattle to Harrisburg

Cheapest flights from Seattle to Harrisburg
Explore the most affordable flight options available from Seattle to Harrisburg. Find the lowest fares from popular airlines and budget airlines, with prices last updated on septiembre 11, 2025.

This American Airlines deal was found by Cheapflights users on 9/11. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
jue. 11/201:53 pmSEA - MDT
1 stop7h 29mAmerican Airlines
lun. 11/245:40 amMDT - SEA
1 stop9h 00mAmerican Airlines
Deal found 9/11$277
This American Airlines deal was found by Cheapflights users on 9/11. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mié. 11/1212:59 amSEA - MDT
1 stop7h 13mAmerican Airlines
lun. 11/174:36 pmMDT - SEA
1 stop9h 42mAmerican Airlines
Deal found 9/11$306
This American Airlines deal was found by Cheapflights users on 9/10. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
sáb. 10/48:34 amSEA - MDT
1 stop10h 12mAmerican Airlines
sáb. 10/116:15 amMDT - SEA
1 stop7h 48mAmerican Airlines
Deal found 9/10$307
This United Airlines deal was found by Cheapflights users on 9/11. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
jue. 10/210:50 amSEA - MDT
1 stop7h 35mUnited Airlines
mar. 10/76:15 amMDT - SEA
2 stops11h 09mUnited Airlines
Deal found 9/11$312
This American Airlines deal was found by Cheapflights users on 9/10. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
vie. 11/2110:35 amSEA - MDT
1 stop9h 21mAmerican Airlines
dom. 11/233:46 pmMDT - SEA
1 stop8h 13mAmerican Airlines
Deal found 9/10$332
This American Airlines deal was found by Cheapflights users on 9/10. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
jue. 10/211:05 pmSEA - MDT
1 stop7h 17mAmerican Airlines
dom. 10/56:23 amMDT - SEA
1 stop11h 27mAmerican Airlines
Deal found 9/10$352
This American Airlines deal was found by Cheapflights users on 9/11. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mié. 10/111:05 pmSEA - MDT
1 stop7h 54mAmerican Airlines
dom. 10/56:23 amMDT - SEA
1 stop11h 27mAmerican Airlines
Deal found 9/11$363
This American Airlines deal was found by Cheapflights users on 9/11. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
jue. 10/210:11 amSEA - MDT
1 stop10h 48mAmerican Airlines
mar. 10/73:30 pmMDT - SEA
1 stop11h 57mAmerican Airlines
Deal found 9/11$380
This United Airlines deal was found by Cheapflights users on 9/10. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
jue. 11/207:13 pmSEA - MDT
2 stops11h 22mUnited Airlines
lun. 11/242:35 pmMDT - SEA
1 stop9h 19mUnited Airlines
Deal found 9/10$382
This United Airlines deal was found by Cheapflights users on 9/9. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
jue. 11/137:13 pmSEA - MDT
2 stops11h 22mUnited Airlines
dom. 11/166:30 amMDT - SEA
1 stop8h 00mUnited Airlines
Deal found 9/9$391

Cheapflights Fare Finder

 
Customize your flight search to find flights from Seattle to Harrisburg 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, Cheapflights users made 2,558,603 searches. Data last updated septiembre 11, 2025.
Use the filters below to find and compare flights from Seattle to Harrisburg that are best for you.

Fly from

Seattle

Fly to

Harrisburg

Route

Depart

Return

Price

SeattleHarrisburg

SEA - MDT

SEAMDT

Seattle/Tacoma Intl

mar. 3/10

6:00 am-5:25 pm

1 stop8h 25m

Harrisburg

mié. 3/11

6:25 pm-12:16 am

1 stop8h 51m

$307

SeattleHarrisburg

SEA - MDT

SEAMDT

Seattle/Tacoma Intl

jue. 10/2

10:50 am-9:25 pm

1 stop7h 35m

Harrisburg

mar. 10/7

6:15 am-2:24 pm

2 stops11h 09m

$312

SeattleHarrisburg

SEA - MDT

SEAMDT

Seattle/Tacoma Intl

sáb. 10/4

11:40 pm-10:14 am

1 stop7h 34m

Harrisburg

sáb. 10/11

10:50 am-5:53 pm

2 stops10h 03m

$312

SeattleHarrisburg

SEA - MDT

SEAMDT

Seattle/Tacoma Intl

vie. 11/21

10:35 am-10:56 pm

1 stop9h 21m

Harrisburg

dom. 11/23

3:46 pm-8:59 pm

1 stop8h 13m

$332

SeattleHarrisburg

SEA - MDT

SEAMDT

Seattle/Tacoma Intl

mié. 10/1

10:09 am-11:12 pm

1 stop10h 03m

Harrisburg

dom. 10/5

6:23 am-2:50 pm

1 stop11h 27m

$332

SeattleHarrisburg

SEA - MDT

SEAMDT

Seattle/Tacoma Intl

mié. 10/22

12:34 am-10:57 am

1 stop7h 23m

Harrisburg

lun. 10/27

1:52 pm-8:57 pm

1 stop10h 05m

$352

SeattleHarrisburg

SEA - MDT

SEAMDT

Seattle/Tacoma Intl

mié. 11/19

12:59 am-11:09 am

1 stop7h 10m

Harrisburg

lun. 11/24

5:40 am-11:40 am

1 stop9h 00m

$377

SeattleHarrisburg

SEA - MDT

SEAMDT

Seattle/Tacoma Intl

jue. 11/20

7:13 pm-9:35 am

2 stops11h 22m

Harrisburg

lun. 11/24

2:35 pm-8:54 pm

1 stop9h 19m

$382

SeattleHarrisburg

SEA - MDT

SEAMDT

Seattle/Tacoma Intl

jue. 11/13

7:13 pm-9:35 am

2 stops11h 22m

Harrisburg

dom. 11/16

6:30 am-11:30 am

1 stop8h 00m

$391

SeattleHarrisburg

SEA - MDT

SEAMDT

Seattle/Tacoma Intl

jue. 10/2

11:40 pm-10:14 am

1 stop7h 34m

$204

Flights are sorted by cheapest round-trip flights first.

Deals found on 9/9

Showing 1-10 of 18 results
1
2

Best time to book a flight from Seattle to Harrisburg

Have a flexible travel schedule? Discover the best time to fly to Harrisburg from Seattle with our price prediction graph.
Estimated round-trip price
Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.

Cheapflights Insights

Everything you need to know about your flight from Seattle to Harrisburg

How far ahead should I book a flight from Seattle to Harrisburg?

Use this chart to determine the optimal time to book a round-trip flight from Seattle to Harrisburg. Price data was last updated on August 29, 2025.

To ensure you get the cheapest price possible for a flight from Seattle to Harrisburg, you should look to book at least 29 days in advance of your intended travel date. The price of your flight may increase if you delay and leave booking until a week or so before departure.

What is the cheapest month to book a flight from Seattle to Harrisburg?

Currently, August is the cheapest month in which you can book a flight from Seattle to Harrisburg (average of $347). Flying from Seattle to Harrisburg in November is currently the most expensive (average of $408). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

Reviews of airlines servicing Harrisburg

Get insights into the airlines that provide service to Harrisburg. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to Harrisburg. Reviews last updated septiembre 11, 2025.
Read through reviews of airlines operating flights from Seattle to Harrisburg, such as Delta, United Airlines, and American Airlines. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.
Delta
8.0
Very good
7,960 reviews

Boarding

8.2

Entertainment

7.9

Comfort

7.9

Food

7.3

Crew

8.5

Overall

8.0

Reviews

1 / 20
10.0
Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!
Delta
8.0
Very good
7,960 reviews
Delta
8.0
Very good
7,960 reviews

Boarding

8.2

Entertainment

7.9

Comfort

7.9

Food

7.3

Crew

8.5

Overall

8.0

Reviews

1 / 20
10.0
Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!
United Airlines
7.4
Good
8,937 reviews
Delta
8.0
Very good
7,960 reviews

Boarding

8.2

Entertainment

7.9

Comfort

7.9

Food

7.3

Crew

8.5

Overall

8.0

Reviews

1 / 20
10.0
Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!
American Airlines
7.2
Good
10,000 reviews
Delta
8.0
Very good
7,960 reviews

Boarding

8.2

Entertainment

7.9

Comfort

7.9

Food

7.3

Crew

8.5

Overall

8.0

Reviews

1 / 20
10.0
Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!

Related info for your journey

Find useful and relevant information for your journey from Seattle to Harrisburg. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • How long is the flight from Seattle to Harrisburg?

    A quick flight from Seattle to Harrisburg can take about 7h 35m. Delta provides one of the quickest options available for as low as $312. There are 2289 mi between Seattle and Harrisburg. Both multi-stop and nonstop flights can be found to your destination and back.

  • What are the cheapest airlines flying from Seattle to Harrisburg round-trip?

    Currently priced at $226, Delta will fly you from Seattle to Harrisburg and back. In addition to Delta, many other airlines offer competitively priced options for your trip. Search Cheapflights for deals from American Airlines and United Airlines - these airlines can fly you to your destination from $286 and $286, respectively. Delta is priced at 57% lower than the current average price of a flight leaving 3 months from now.

  • Can I find deals for flights from Seattle to Harrisburg that include hotel bookings?

    Yes. In addition to deals on Seattle to Harrisburg flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from Seattle to Harrisburg?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Seattle to Harrisburg.

  • Can I find deals for business class flights from Seattle to Harrisburg?

    Yes. Cheapflights offers flight deals from Seattle to Harrisburg by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

  • What is the cheapest month to book a flight from Seattle to Harrisburg?

    Currently, August is the cheapest month in which you can book a flight from Seattle to Harrisburg (average of $347). Flying from Seattle to Harrisburg in November is currently the most expensive (average of $408). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

See more FAQs

Traveling to a place near Harrisburg?

Book flights to Harrisburg if you plan to visit one of these locations
Carlisle
Mechanicsburg
Hershey
Camp Hill

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Alternative routes for Seattle to Harrisburg

See prices for flight routes from nearby airports that may be better suited for you.
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Top 3 airlines flying from Seattle to Harrisburg

Discover the top 3 airlines that operate flights from Seattle to Harrisburg. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated septiembre 11, 2025.
AirlineCheapestAverageFlexibilityOn-time
DeltaCheapest$226Average$445FlexibilityNo cancel feeOn-timeN/A
United AirlinesCheapest$286Average$598FlexibilityNo cancel feeOn-time69%
American AirlinesCheapest$286Average$452FlexibilityNo cancel feeOn-time71%

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