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$144+ Cheap flights from Harrisburg to Seattle (MDT - SEA)

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 6/3. Fares are subject to change and may not be available on all flights or dates of travel.
MDT — SEA
Feb 25 — Mar 41
Tue 2/25
Tue 3/4
1 adult, Economy
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The best prices from Harrisburg to Seattle/Tacoma Intl are usually found in February or September, booked 82 days in advance, depart on a Wednesday or Thursday and return on a Wednesday

Cheap flight deals from Harrisburg to Seattle

Discover tips and strategies to find the most affordable flight options for your journey from Harrisburg (MDT) to Seattle (SEA). 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 February 20, 2025.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$328
(American Airlines)

One-way from

$144
(United Airlines)

Popular in

July

Cheapest in

February

Average price

$383
Provider with most accurate pricing for Harrisburg-Seattle/Tacoma Intl flight deals.
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Provider most trusted by Cheapflights users for Harrisburg-Seattle/Tacoma Intl flights.
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From Harrisburg to Seattle/Tacoma Intl
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One-way flight from Harrisburg to Seattle/Tacoma Intl
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Highest demand for flights based on searches. 23% potential increase in price ($160 potential increase over avg. RT price).
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Cheapest flight prices on average. 4% potential price decrease ($23 potential savings vs. average RT price).
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Average for round-trip flights in February 2025
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Find flight deals from Harrisburg to Seattle

Cheapest flights from Harrisburg to Seattle
Explore the most affordable flight options available from Harrisburg to Seattle. Find the lowest fares from popular airlines and budget airlines, with prices last updated on February 20, 2025.

This American Airlines deal was found by Cheapflights users on 2/20. 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 4/305:07 pmMDT - SEA
1 stop9h 02mAmerican Airlines
Wed 5/711:36 amSEA - MDT
1 stop9h 04mAmerican Airlines
Deal found 2/20$328
This United Airlines deal was found by Cheapflights users on 2/20. 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 4/306:30 amMDT - SEA
2 stops12h 28mUnited Airlines
Wed 5/710:55 amSEA - MDT
1 stop7h 31mUnited Airlines
Deal found 2/20$366
This Mytrip deal was found by Cheapflights users on 2/20. 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.
Wed 4/304:14 pmMDT - SEA
3 stops46h 21mMultiple Airlines
Wed 5/71:37 pmSEA - MDT
2 stops18h 08mMultiple Airlines
Deal found 2/20$411
This Alaska Airlines deal was found by Cheapflights users on 2/18. 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.
Thu 8/286:21 pmMDT - SEA
1 stop8h 30mAlaska Airlines
Sat 9/66:00 amSEA - MDT
1 stop8h 49mAlaska Airlines
Deal found 2/18$454
This Delta deal was found by Cheapflights users on 2/18. 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 3/116:05 amMDT - SEA
1 stop9h 25mDelta
Sat 3/156:00 amSEA - MDT
1 stop8h 16mDelta
Deal found 2/18$463

Find flights from Harrisburg to Seattle within your budget

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, Cheapflights users made 2,558,603 searches. Data last updated February 20, 2025.

Fly from

Harrisburg

Fly to

Seattle

Route

Depart

Return

Price

HarrisburgSeattle

MDT - SEA

MDTSEA

Harrisburg

Wed 4/30

5:07 pm-11:09 pm

1 stop9h 02m

Seattle/Tacoma Intl

Wed 5/7

11:36 am-11:40 pm

1 stop9h 04m

$328

HarrisburgSeattle

MDT - SEA

MDTSEA

Harrisburg

Wed 4/30

6:30 am-3:58 pm

2 stops12h 28m

Seattle/Tacoma Intl

Wed 5/7

10:55 am-9:26 pm

1 stop7h 31m

$366

HarrisburgSeattle

MDT - SEA

MDTSEA

Harrisburg

Wed 4/30

4:14 pm-11:35 am

3 stops46h 21m

Seattle/Tacoma Intl

Wed 5/7

1:37 pm-10:45 am

2 stops18h 08m

$411

HarrisburgSeattle

MDT - SEA

MDTSEA

Harrisburg

Tue 3/11

6:05 am-12:30 pm

1 stop9h 25m

Seattle/Tacoma Intl

Sat 3/15

6:00 am-5:16 pm

1 stop8h 16m

$463

HarrisburgSeattle

MDT - SEA

MDTSEA

Harrisburg

Fri 8/15

6:21 pm-11:51 pm

1 stop8h 30m

Seattle/Tacoma Intl

Sat 8/23

6:00 am-9:34 pm

2 stops12h 34m

$524

HarrisburgSeattle

MDT - SEA

MDTSEA

Harrisburg

Tue 6/3

7:59 pm-12:59 am

1 stop8h 00m

$144

HarrisburgSeattle

MDT - SEA

MDTSEA

Harrisburg

Sun 4/13

2:57 pm-9:59 pm

1 stop10h 02m

$270

HarrisburgSeattle

MDT - SEA

MDTSEA

Harrisburg

Fri 3/7

10:47 am-4:40 pm

1 stop8h 53m

$424

Flights are sorted by cheapest round-trip flights first.

Deals found on 2/19

Compare providers for flights from Harrisburg to Seattle

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 Harrisburg to Seattle in February.
ProviderPrice AccuracyTrust Score*
ExpediaPrice Accuracy1 starTrust Score*3 stars
FlightHubPrice Accuracy3 starsTrust Score*3 stars
AranGrantPrice Accuracy3 starsTrust Score*1 star
CheapfaremartPrice Accuracy-Trust Score*3 stars
PricelinePrice Accuracy1 starTrust 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 Harrisburg-Seattle flights, users find the pricing of FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on Harrisburg-Seattle flight deals on Cheapflights vs. FlightHub >95% of the time. Price accuracy is based on data collected from Harrisburg-Seattle flight searches over the past month and is updated monthly.
  • Most trusted provider: When it comes to deals on Harrisburg-Seattle 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 Harrisburg-Seattle 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 Harrisburg to Seattle

Have a flexible travel schedule? Discover the best time to fly to Seattle from Harrisburg 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.

Travel insights for flights from Harrisburg to Seattle

Get recent, data-driven insights about flights from Harrisburg to Seattle including ideal travel times, pricing trends, and more.

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

Use this chart to determine the optimal time to book a round-trip flight from Harrisburg to Seattle. Price data was last updated on February 14, 2025.

Booking 82 days in advance of your planned departure date is, on average, the best time to get cheap flights from Harrisburg to Seattle. The general trend is that the closer you book to the departure date, the more expensive your flight will be.

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

Currently, January is the cheapest month in which you can book a flight from Harrisburg to Seattle (average of $238). Flying from Harrisburg to Seattle in July is currently the most expensive (average of $411). 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 MDT to SEA?

Find hourly flight availability from Harrisburg to Seattle. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated February 20, 2025.

It’s typically best to fly out from Harrisburg to Seattle at noon. Doing so could potentially save you 22% on the flight price compared to flying in the morning, which is usually more expensive.

Rainfall in Seattle by month

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

In terms of precipitation, rainfall in Seattle ranges from 0.7 - 6.6 inches per month. November is typically the wettest month, when rainfall can reach 6.6 in. July is typically the driest time to visit Seattle when rainfall is around 0.7 in.

Temperature in Seattle by month

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

If weather is an important factor for your trip to Seattle, 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 66.2 F. Travelers looking to avoid the cold should look outside of December, when temperatures are typically at their lowest (around 41.0 F).

Reviews of airlines servicing Seattle

Get insights into the airlines that provide service to Seattle. 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 Seattle. Reviews last updated February 20, 2025.
Alaska Airlines
8.0
Very good
9,697 reviews

Boarding

8.2

Entertainment

7.1

Comfort

7.9

Crew

8.5

Food

7.1

Overall

8.0

Reviews

1 / 20

10.0
Excellent

Cheri,Jan 2025

FAT - SEA

Very friendly. I really liked that they had water for us in cartons not plastic. Impressed with Alaska Airlines, First time I had flown them

Alaska Airlines
8.0
Very good
9,697 reviews
Alaska Airlines
8.0
Very good
9,697 reviews

Boarding

8.2

Entertainment

7.1

Comfort

7.9

Crew

8.5

Food

7.1

Overall

8.0

Reviews

1 / 20

10.0
Excellent

Cheri,Jan 2025

FAT - SEA

Very friendly. I really liked that they had water for us in cartons not plastic. Impressed with Alaska Airlines, First time I had flown them

Delta
8.0
Very good
8,219 reviews
Alaska Airlines
8.0
Very good
9,697 reviews

Boarding

8.2

Entertainment

7.1

Comfort

7.9

Crew

8.5

Food

7.1

Overall

8.0

Reviews

1 / 20

10.0
Excellent

Cheri,Jan 2025

FAT - SEA

Very friendly. I really liked that they had water for us in cartons not plastic. Impressed with Alaska Airlines, First time I had flown them

United Airlines
7.4
Good
8,765 reviews
Alaska Airlines
8.0
Very good
9,697 reviews

Boarding

8.2

Entertainment

7.1

Comfort

7.9

Crew

8.5

Food

7.1

Overall

8.0

Reviews

1 / 20

10.0
Excellent

Cheri,Jan 2025

FAT - SEA

Very friendly. I really liked that they had water for us in cartons not plastic. Impressed with Alaska Airlines, First time I had flown them

American Airlines
7.2
Good
10,000 reviews
Alaska Airlines
8.0
Very good
9,697 reviews

Boarding

8.2

Entertainment

7.1

Comfort

7.9

Crew

8.5

Food

7.1

Overall

8.0

Reviews

1 / 20

10.0
Excellent

Cheri,Jan 2025

FAT - SEA

Very friendly. I really liked that they had water for us in cartons not plastic. Impressed with Alaska Airlines, First time I had flown them

Related info for your journey

Find useful and relevant information for your journey from Harrisburg to Seattle. 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 Harrisburg to Seattle round-trip?

    American Airlines, at $328, was found to be the cheapest airline from Harrisburg to Seattle.Alternate airlines to your destination round-trip include United Airlines and Delta. These flights start at 37% lower than the current average price 3 months from now.

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

    To fly one-way, consider booking your trip with United Airlines, which is currently one of the cheapest options available, starting at $144. American Airlines flights start at $270 while deals on Alaska Airlines start at $424 one-way.

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

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

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

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

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

    Yes. Cheapflights offers flight deals from Harrisburg to Seattle 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 Harrisburg to Seattle?

    Currently, January is the cheapest month in which you can book a flight from Harrisburg to Seattle (average of $238). Flying from Harrisburg to Seattle in July is currently the most expensive (average of $411). 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
SeaTac
Tukwila
Renton
Tacoma
Lacey
Ocean Shores
Leavenworth
Olympia
Federal Way
Centralia
Marysville
Cle Elum
Mukilteo
Aberdeen
Lakewood
Issaquah
Shoreline
Lynnwood
Shelton
Silverdale

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Top 4 airlines flying from Harrisburg to Seattle

Discover the top 4 airlines that operate flights from Harrisburg to Seattle. 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 February 20, 2025.
AirlineCheapestAverageFlexibilityOn-time
American AirlinesCheapest$308Average$523FlexibilityNo cancel feeOn-time71%
DeltaCheapest$329Average$548FlexibilityNo cancel feeOn-timeN/A
Alaska AirlinesCheapest$352Average$803FlexibilityNo cancel feeOn-time75%
United AirlinesCheapest$362Average$629FlexibilityNo cancel feeOn-time69%
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