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$181+ 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 9/5. Fares are subject to change and may not be available on all flights or dates of travel.
SEA — MDT
Aug 28 — Sep 41
Fri 8/28
Fri 9/4
1 adult, Economy
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Cheap 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 July 29, 2026.

This American Airlines deal was found by Cheapflights users on 7/27. 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.
Wed 8/2611:56 pm
SEA
-
MDT
1 stop9h 49m
American Airlines
Wed 9/21:25 pm
MDT
-
SEA
1 stop10h 27m
American Airlines
Deal found 7/27$361
This United Airlines deal was found by Cheapflights users on 7/27. 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.
Wed 8/2611:00 pm
SEA
-
MDT
1 stop7h 51m
United Airlines
Wed 9/26:30 am
MDT
-
SEA
2 stops10h 54m
United Airlines
Deal found 7/27$366
This American Airlines deal was found by Cheapflights users on 7/26. 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.
Mon 8/3111:56 pm
SEA
-
MDT
1 stop9h 49m
American Airlines
Wed 9/96:54 pm
MDT
-
SEA
1 stop8h 28m
American Airlines
Deal found 7/26$370
This United Airlines deal was found by Cheapflights users on 7/27. 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.
Wed 10/2810:40 am
SEA
-
MDT
2 stops10h 04m
United Airlines
Sun 11/15:48 pm
MDT
-
SEA
1 stop8h 11m
United Airlines
Deal found 7/27$375
This United Airlines deal was found by Cheapflights users on 7/24. 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.
Sat 10/37:00 am
SEA
-
MDT
1 stop6h 52m
United Airlines
Sat 10/172:55 pm
MDT
-
SEA
2 stops11h 01m
United Airlines
Deal found 7/24$378
This American Airlines deal was found by Cheapflights users on 7/28. 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.
Tue 8/1811:56 pm
SEA
-
MDT
1 stop9h 49m
American Airlines
Sat 8/222:45 pm
MDT
-
SEA
1 stop10h 14m
American Airlines
Deal found 7/28$379
This Delta deal was found by Cheapflights users on 7/24. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/35:30 am
SEA
-
MDT
1 stop7h 20m
Delta
Wed 9/96:09 pm
MDT
-
SEA
1 stop8h 49m
Delta
Deal found 7/24$380
This Delta deal was found by Cheapflights users on 7/27. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/911:10 pm
SEA
-
MDT
1 stop9h 21m
Delta
Sun 10/115:10 pm
MDT
-
SEA
1 stop7h 55m
Delta
Deal found 7/27$429
This United Airlines deal was found by Cheapflights users on 7/27. 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.
Thu 10/295:05 am
SEA
-
MDT
2 stops10h 52m
United Airlines
Sun 11/15:48 pm
MDT
-
SEA
1 stop8h 11m
United Airlines
Deal found 7/27$455
This American Airlines deal was found by Cheapflights users on 7/25. 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.
Sat 11/2110:41 am
SEA
-
MDT
1 stop8h 36m
American Airlines
Tue 12/13:15 pm
MDT
-
SEA
1 stop8h 10m
American Airlines
Deal found 7/25$459
This American Airlines deal was found by Cheapflights users on 7/28. 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.
Sat 8/295:50 am
SEA
-
MDT
1 stop10h 00m
American Airlines
Sat 9/54:15 pm
MDT
-
SEA
1 stop9h 41m
American Airlines
Deal found 7/28$472
This United Airlines deal was found by Cheapflights users on 7/24. 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.
Thu 8/275:20 pm
SEA
-
MDT
2 stops13h 17m
United Airlines
Sat 9/52:52 pm
MDT
-
SEA
1 stop8h 53m
United Airlines
Deal found 7/24$480

Find 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 July 29, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$361
(American Airlines)

One-way from

$181
(Delta)

Popular in

December

Cheapest in

April

Average price

$657
Provider with most accurate pricing for Seattle/Tacoma Intl-Harrisburg flight deals.
Search Deals
Provider most trusted by Cheapflights users for Seattle/Tacoma Intl-Harrisburg flights.
Search Deals
From Seattle/Tacoma Intl to Harrisburg
Search Deals
One-way flight from Seattle/Tacoma Intl to Harrisburg
Search Deals
Highest demand for flights based on searches. 4% potential increase in price ($24 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 2% potential price decrease ($12 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in July 2026
Search Deals

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 July 29, 2026.
Use the filters below to find and compare flights from Seattle to Harrisburg that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip
Quickest round-trip

SeattleHarrisburg

SEA - MDT

SEAMDT

Seattle/Tacoma Intl

Tue 10/27

10:40 am-11:44 pm

2 stops10h 04m

Harrisburg

Wed 11/4

6:30 am-12:19 pm

1 stop8h 49m

$366

SeattleHarrisburg

SEA - MDT

SEAMDT

Seattle/Tacoma Intl

Mon 8/31

11:56 pm-12:45 pm

1 stop9h 49m

Harrisburg

Wed 9/9

3:48 pm-10:57 pm

1 stop10h 09m

$370

SeattleHarrisburg

SEA - MDT

SEAMDT

Seattle/Tacoma Intl

Thu 8/27

5:20 pm-9:37 am

2 stops13h 17m

Harrisburg

Sat 9/5

2:52 pm-8:45 pm

1 stop8h 53m

$480

SeattleHarrisburg

SEA - MDT

SEAMDT

Seattle/Tacoma Intl

Fri 9/4

7:00 am-4:52 pm

1 stop6h 52m

Harrisburg

Wed 9/9

6:30 am-3:52 pm

2 stops12h 22m

$485

SeattleHarrisburg

SEA - MDT

SEAMDT

Seattle/Tacoma Intl

Thu 9/3

6:15 pm-9:37 am

2 stops12h 22m

Harrisburg

Wed 9/9

6:30 am-7:08 pm

2 stops15h 38m

$490

SeattleHarrisburg

SEA - MDT

SEAMDT

Seattle/Tacoma Intl

Mon 8/31

7:35 pm-1:32 pm

2 stops14h 57m

Harrisburg

Wed 9/9

6:30 am-7:08 pm

2 stops15h 38m

$490
Cheapest one-way

SeattleHarrisburg

SEA - MDT

SEAMDT

Seattle/Tacoma Intl

Sat 9/5

6:00 am-5:39 pm

1 stop8h 39m

$181

SeattleHarrisburg

SEA - MDT

SEAMDT

Seattle/Tacoma Intl

Sat 9/5

5:15 am-5:21 pm

1 stop9h 06m

$181

SeattleHarrisburg

SEA - MDT

SEAMDT

Seattle/Tacoma Intl

Sat 9/5

5:20 pm-9:51 am

2 stops13h 31m

$241
Quickest one-way

SeattleHarrisburg

SEA - MDT

SEAMDT

Seattle/Tacoma Intl

Tue 9/8

11:00 pm-9:51 am

1 stop7h 51m

$288

Flights are sorted by cheapest round-trip flights first.

Deals found on 7/27

Showing 1-10 of 14 resultsSorted by cheapest first
1
2

Compare providers for flights from Seattle to Harrisburg

Provider information is updated monthly. Please note that these providers often have deals for this flight, but the availability may vary on a day-by-day basis on Cheapflights.
Use the table below to compare price accuracy, trust ratings, and cancellation policies for each provider offering flight deals from Seattle to Harrisburg in July.
ProviderPrice AccuracyTrust Score*
ExpediaPrice Accuracy1 starTrust Score*3 stars
FlightHubPrice Accuracy3 starsTrust Score*3 stars

*The Trust Score is based on feedback from users after their booking experience. It measures overall satisfaction, helping us identify issues like hidden fees, problems during the ticketing process, and the quality of customer service. This score is our best indicator of the provider's quality and reliability.

  • Most accurate provider: When it comes to deals on Seattle-Harrisburg flights, users find the pricing of FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on Seattle-Harrisburg flight deals on Cheapflights vs. FlightHub >95% of the time. Price accuracy is based on data collected from Seattle-Harrisburg flight searches over the past month and is updated monthly.
  • Most trusted provider: When it comes to deals on Seattle-Harrisburg flights, Cheapflights users trust FlightHub the most. FlightHub has received a user feedback score of 3 out of 3 stars (3 being the best), meaning they have been trusted the most by Cheapflights users looking for Seattle-Harrisburg flight deals. Provider user feedback score is based on Cheapflights searches over the past month and is updated monthly.

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

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

Currently, April is the cheapest month in which you can book a flight from Seattle to Harrisburg (average of $418). Flying from Seattle to Harrisburg in December is currently the most expensive (average of $658). 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.

How much does it cost to fly round-trip from Seattle to Harrisburg?

Airfare is below average for this route at the moment.

Seattle to Harrisburg flights typically cost between $398 and $538 in August.
The cheapest round-trip price found within the last 5 days was $361 on American Airlines (Aug 26-Sep 2).

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 July 29, 2026.
Read through reviews of airlines operating flights from Seattle to Harrisburg, such as Alaska Airlines,Delta, andUnited Airlines. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.
Alaska Airlines
7.9
Good
12,726 reviews

Crew

8.5

Comfort

7.8

Food

7.0

Overall

7.9

Entertainment

7.0

Boarding

8.1

Reviews

1 / 20
4.0
Okay

Anonymous,Jun 2026

SEA - RNO

There was a delay and my husband needs a wheelchair and we were moved from 1 gate to another.
Alaska Airlines
7.9
Good
12,726 reviews
Alaska Airlines
7.9
Good
12,726 reviews

Crew

8.5

Comfort

7.8

Food

7.0

Overall

7.9

Entertainment

7.0

Boarding

8.1

Reviews

1 / 20
4.0
Okay

Anonymous,Jun 2026

SEA - RNO

There was a delay and my husband needs a wheelchair and we were moved from 1 gate to another.
Delta
7.8
Good
8,486 reviews
Alaska Airlines
7.9
Good
12,726 reviews

Crew

8.5

Comfort

7.8

Food

7.0

Overall

7.9

Entertainment

7.0

Boarding

8.1

Reviews

1 / 20
4.0
Okay

Anonymous,Jun 2026

SEA - RNO

There was a delay and my husband needs a wheelchair and we were moved from 1 gate to another.
United Airlines
7.4
Good
10,050 reviews
Alaska Airlines
7.9
Good
12,726 reviews

Crew

8.5

Comfort

7.8

Food

7.0

Overall

7.9

Entertainment

7.0

Boarding

8.1

Reviews

1 / 20
4.0
Okay

Anonymous,Jun 2026

SEA - RNO

There was a delay and my husband needs a wheelchair and we were moved from 1 gate to another.
American Airlines
7.1
Good
11,840 reviews
Alaska Airlines
7.9
Good
12,726 reviews

Crew

8.5

Comfort

7.8

Food

7.0

Overall

7.9

Entertainment

7.0

Boarding

8.1

Reviews

1 / 20
4.0
Okay

Anonymous,Jun 2026

SEA - RNO

There was a delay and my husband needs a wheelchair and we were moved from 1 gate to another.

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 9h 49m. United Airlines provides one of the quickest options available for as low as $370. 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 $193, 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 $277 and $278, respectively. Delta is priced at 63% lower than the current average price of a flight leaving 3 months from now.

  • What are the cheapest airlines to fly from Seattle to Harrisburg one-way?

    The cheapest airline one-way is United Airlines, with whom users have recently found tickets for as low as $139. However, be on the lookout for offers from American Airlines and Delta, as they are both options that can get you from Seattle to Harrisburg for a low price.

  • 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, April is the cheapest month in which you can book a flight from Seattle to Harrisburg (average of $418). Flying from Seattle to Harrisburg in December is currently the most expensive (average of $658). 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
Hershey
Mechanicsburg
Camp Hill
Carlisle

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Top 4 airlines flying from Seattle to Harrisburg

Discover the top 4 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 July 29, 2026.
AirlineCheapestAverageFlexibilityOn-time
DeltaCheapest$193Average$479FlexibilityNo cancel feeOn-timeN/A
American AirlinesCheapest$277Average$456FlexibilityNo cancel feeOn-time71%
United AirlinesCheapest$278Average$513FlexibilityNo cancel feeOn-time69%
Alaska AirlinesCheapest$463Average$798FlexibilityNo cancel feeOn-time75%

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