HomeSearch by dateVacation packagesHotelsFlight dealsCar rentalTravel tips & news
Harrisburg

$144+ 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 5/9. Fares are subject to change and may not be available on all flights or dates of travel.
SEA — MDT
Apr 20 — Apr 271
Sun 4/20
Sun 4/27
1 adult, Economy
We work with more than 300 partners to bring you better travel deals

Find cheap flights from Seattle to Harrisburg with Cheapflights

1. Tell us where you want to go

Enter your travel information like dates, passengers, trip type (one-way or round trip), and preferred cabin class then click “Find deals”

2. Select your favorite providers

We find the providers serving your travel needs. Choose up to four travel providers to compare side-by-side for flights, hotels, or car rentals.

3. Compare prices and book

Review each provider’s pricing and select the best option for you! Book through your favorite provider’s website for a seamless experience.

Cheapflights Tip: The best prices from Seattle/Tacoma Intl to Harrisburg are usually found in April or February, booked 75 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 April 15, 2025.

Most accurate provider

FlightHub
3 stars

Most trusted provider

eDreams
3 stars

Round-trip from

$287
(Delta)

One-way from

$144
(United Airlines)

Popular in

June

Cheapest in

April

Average price

$386
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. 12% potential increase in price ($79 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 5% potential price decrease ($29 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in April 2025
Search Deals

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 April 15, 2025.

This Delta deal was found by Cheapflights users on 4/14. 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.
Tue 6/109:40 pmSEA - MDT
1 stop10h 29mDelta
Fri 6/135:01 pmMDT - SEA
1 stop8h 21mDelta
Deal found 4/14$287
This American Airlines deal was found by Cheapflights users on 4/14. 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.
Thu 10/212:09 pmSEA - MDT
1 stop6h 48mAmerican Airlines
Sun 10/512:24 pmMDT - SEA
1 stop9h 32mAmerican Airlines
Deal found 4/14$313
This United deal was found by Cheapflights users on 4/15. 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 is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 7/3112:55 pmSEA - MDT
1 stop7h 35mUnited Airlines
Mon 8/47:59 pmMDT - SEA
1 stop7h 57mUnited Airlines
Deal found 4/15$387
This Mytrip deal was found by Cheapflights users on 4/13. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 6/66:00 amSEA - MDT
3 stops32h 48mMultiple Airlines
Mon 6/98:49 pmMDT - SEA
2 stops20h 36mMultiple Airlines
Deal found 4/13$470
This Alaska Airlines deal was found by Cheapflights users on 4/15. 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 Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 6/2511:40 pmSEA - MDT
1 stop8h 17mAlaska Airlines
Mon 6/306:31 pmMDT - SEA
1 stop7h 53mAlaska Airlines
Deal found 4/15$637

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 April 15, 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

Tue 6/10

9:40 pm-11:09 am

1 stop10h 29m

Harrisburg

Fri 6/13

5:01 pm-10:22 pm

1 stop8h 21m

$287

SeattleHarrisburg

SEA - MDT

SEAMDT

Seattle/Tacoma Intl

Thu 10/2

12:09 pm-9:57 pm

1 stop6h 48m

Harrisburg

Sun 10/5

12:24 pm-6:56 pm

1 stop9h 32m

$313

SeattleHarrisburg

SEA - MDT

SEAMDT

Seattle/Tacoma Intl

Thu 7/31

12:55 pm-11:30 pm

1 stop7h 35m

Harrisburg

Mon 8/4

7:59 pm-12:56 am

1 stop7h 57m

$387

SeattleHarrisburg

SEA - MDT

SEAMDT

Seattle/Tacoma Intl

Fri 6/6

6:00 am-5:48 pm

3 stops32h 48m

Harrisburg

Mon 6/9

8:49 pm-2:25 pm

2 stops20h 36m

$470

SeattleHarrisburg

SEA - MDT

SEAMDT

Seattle/Tacoma Intl

Wed 6/25

11:40 pm-10:57 am

1 stop8h 17m

Harrisburg

Mon 6/30

6:31 pm-11:24 pm

1 stop7h 53m

$637

SeattleHarrisburg

SEA - MDT

SEAMDT

Seattle/Tacoma Intl

Fri 5/9

11:59 pm-10:17 am

1 stop7h 18m

$144

SeattleHarrisburg

SEA - MDT

SEAMDT

Seattle/Tacoma Intl

Thu 5/15

10:13 am-11:39 pm

1 stop10h 26m

$210

SeattleHarrisburg

SEA - MDT

SEAMDT

Seattle/Tacoma Intl

Fri 5/9

3:20 pm-6:53 pm

2 stops24h 33m

$217

SeattleHarrisburg

SEA - MDT

SEAMDT

Seattle/Tacoma Intl

Sat 7/5

11:37 am-11:54 am

2 stops21h 17m

$334

Flights are sorted by cheapest round-trip flights first.

Deals found on 4/15

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 April.
ProviderPrice AccuracyTrust Score*
ExpediaPrice Accuracy1 starTrust Score*3 stars
FlightHubPrice Accuracy3 starsTrust Score*2 stars
eDreamsPrice 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 eDreams the most. eDreams 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

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 April 11, 2025.

To ensure you get the cheapest price possible for a flight from Seattle to Harrisburg, you should look to book at least 75 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, January is the cheapest month in which you can book a flight from Seattle to Harrisburg (average of $355). Flying from Seattle to Harrisburg in June is currently the most expensive (average of $453). 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.

What is the cheapest time of day to fly from SEA to MDT?

Find hourly flight availability from Seattle to Harrisburg. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated April 15, 2025.

When flying from Seattle to Harrisburg, the time of day you fly usually plays a role in the price. Save by searching for a flight at noon, which can drop the price by up to 30% versus a flight in the morning.

Rainfall in Harrisburg by month

Plan your trip to Harrisburg by taking into account the average rainfall totals by month.

In terms of precipitation, rainfall in Harrisburg ranges from 2.7 - 4.1 inches per month. May is typically the wettest month, when rainfall can reach 4.1 in. February is typically the driest time to visit Harrisburg when rainfall is around 2.7 in.

Temperature in Harrisburg by month

Plan your trip to Harrisburg by taking into account the average temperature totals by month.

If weather is an important factor for your trip to Harrisburg, use this chart to help with planning. For those seeking warmer temperatures, July is the ideal time of year to visit, when temperatures reach an average of 75.2 F. Travelers looking to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 30.2 F).

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 April 15, 2025.
Alaska Airlines
8.0
Very good
9,876 reviews

Overall

8.0

Boarding

8.2

Entertainment

7.1

Crew

8.5

Comfort

7.9

Food

7.1

Reviews

1 / 20
8.0
Excellent

Anonymous,Aug 2024

SEA - LAS

Seats were not that comfy especially for someone with big hips 😥
Alaska Airlines
8.0
Very good
9,876 reviews
Alaska Airlines
8.0
Very good
9,876 reviews

Overall

8.0

Boarding

8.2

Entertainment

7.1

Crew

8.5

Comfort

7.9

Food

7.1

Reviews

1 / 20
8.0
Excellent

Anonymous,Aug 2024

SEA - LAS

Seats were not that comfy especially for someone with big hips 😥
Delta
8.0
Very good
7,917 reviews
Alaska Airlines
8.0
Very good
9,876 reviews

Overall

8.0

Boarding

8.2

Entertainment

7.1

Crew

8.5

Comfort

7.9

Food

7.1

Reviews

1 / 20
8.0
Excellent

Anonymous,Aug 2024

SEA - LAS

Seats were not that comfy especially for someone with big hips 😥
United Airlines
7.4
Good
8,658 reviews
Alaska Airlines
8.0
Very good
9,876 reviews

Overall

8.0

Boarding

8.2

Entertainment

7.1

Crew

8.5

Comfort

7.9

Food

7.1

Reviews

1 / 20
8.0
Excellent

Anonymous,Aug 2024

SEA - LAS

Seats were not that comfy especially for someone with big hips 😥
American Airlines
7.2
Good
10,000 reviews
Alaska Airlines
8.0
Very good
9,876 reviews

Overall

8.0

Boarding

8.2

Entertainment

7.1

Crew

8.5

Comfort

7.9

Food

7.1

Reviews

1 / 20
8.0
Excellent

Anonymous,Aug 2024

SEA - LAS

Seats were not that comfy especially for someone with big hips 😥

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.

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

    Currently priced at $287, 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 United Airlines and American Airlines - these airlines can fly you to your destination from $413 and $438, respectively. Delta is priced at 48% 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 $144. 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, January is the cheapest month in which you can book a flight from Seattle to Harrisburg (average of $355). Flying from Seattle to Harrisburg in June is currently the most expensive (average of $453). 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 Seattle?

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

Browse thousands of different options on Cheapflights for your next trip

Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.

Alternative routes for Seattle to Harrisburg

See prices for flight routes from nearby airports that may be better suited for you.
Seattle to Newark flights
Seattle to John F Kennedy Intl flights
Seattle to LaGuardia flights
Seattle to Philadelphia flights
Seattle to Dulles Intl flights
Portland to John F Kennedy Intl flights
Seattle to Reagan-National flights
Portland to Newark flights
Portland to Dulles Intl flights
Portland to LaGuardia flights
Portland to Reagan-National flights
Seattle to Pittsburgh flights
Portland to Philadelphia flights
Portland to Pittsburgh flights
Spokane to John F Kennedy Intl flights
Portland to Harrisburg flights
Spokane to Newark flights
Seattle to Allentown flights
Spokane to LaGuardia flights
Spokane to Dulles Intl flights
Pasco to John F Kennedy Intl flights
Spokane to Philadelphia flights
Spokane to Reagan-National flights
Seattle to State College flights
Pasco to LaGuardia flights
Pasco to Newark flights
Seattle to Scranton flights
Pasco to Dulles Intl flights
Portland to State College flights
Pasco to Reagan-National flights
Spokane to Pittsburgh flights
Seattle to Elmira flights
Portland to Scranton flights
Pullman to John F Kennedy Intl flights
Bellingham to John F Kennedy Intl flights
Pasco to Philadelphia flights
Spokane to Allentown flights
Spokane to State College flights
Bellingham to Newark flights
Pasco to Pittsburgh flights
Bellingham to LaGuardia flights
Bellingham to Reagan-National flights
Portland to Allentown flights
Spokane to Harrisburg flights
Yakima to Newark flights
Yakima to John F Kennedy Intl flights
Bellingham to Dulles Intl flights
Pullman to Newark flights
Walla Walla to Newark flights

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 April 15, 2025.
AirlineCheapestAverageFlexibilityOn-time
DeltaCheapest$226Average$527FlexibilityNo cancel feeOn-timeN/A
American AirlinesCheapest$286Average$448FlexibilityNo cancel feeOn-time71%
United AirlinesCheapest$319Average$606FlexibilityNo cancel feeOn-time69%
Alaska AirlinesCheapest$410Average$872FlexibilityNo cancel feeOn-time75%

100% Free

Cheapflights is completely free to use, so you can start saving the moment you arrive.

Book with Flexibility

Our users can plan ahead with confidence and find flights with no change fees

Travel Smart

Millions of people come to us for their flight needs every year. We help make travel planning easy by providing useful insights and data-driven graphs that can inform your decisions.