MDT - SEA

$323 Find Cheap Flights from Harrisburg to Seattle - Compare and Save

1 adult
1 adult, Economy, 0 bags

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Everything you should know

Cheapest round-trip
$380
Typical prices: $360-$572
American Airlines
Wed 10/17Wed 10/24
MDT - SEA • 1 stop
Cheapest one-way
$303
Typical prices: $199-$389
United Airlines
Fri 1/5
MDT - SEA • 1 stop
Nonstop flights
Not available
There are currently no direct flights between Harrisburg and Seattle. You'll need to take a connecting flight to reach the destination.
Insights
Insights
When to book
20 weeks
in advance
Our data shows that travelers who book at least 20 weeks in advance save around 39% compared to booking last minute.
Insights
Insights
When to travel
February
Cheapest • 21% price drop
June
Most popular
Good to know
+1
Good to know
+1
Top layover airports
Dallas/Fort Worth (DFW)
Cheapest • Avg $418 (round-trip)
Detroit Metropolitan Wayne County (DTW)
Shortest trip • 7h 13m (one-way)
Insights
Insights
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Flight Deals
Booking Insights
Flight Deals

Cheap Flights from Harrisburg to Seattle (MDT-SEA)

 
Discover the best prices for you by selecting your travel dates on KAYAK.

Recent round-trip flight deals from Harrisburg to Seattle

Sat, Oct 17 - Sat, Oct 24
American Airlines Logo
3:28 pm - 11:10 pmMDT  Harrisburg-SEA Seattle/Tacoma Intl
10h 42m1 stop Charlotte Douglas
American Airlines Logo
11:59 pm - 11:17 amSEA  Seattle/Tacoma Intl-MDT Harrisburg
8h 18m1 stop Chicago O'Hare Intl
$380American Airlines
Sat, Oct 17 - Sat, Oct 24
American Airlines Logo
12:10 pm - 8:14 pmMDT  Harrisburg-SEA Seattle/Tacoma Intl
11h 04m1 stop Chicago O'Hare Intl
American Airlines Logo
9:42 pm - 9:11 amSEA  Seattle/Tacoma Intl-MDT Harrisburg
8h 29m1 stop Charlotte Douglas
$381American Airlines
Tue, Oct 27 - Wed, Nov 4
Delta Logo
5:10 pm - 10:05 pmMDT  Harrisburg-SEA Seattle/Tacoma Intl
7h 55m1 stop Detroit Metropolitan Wayne County
Delta Logo
11:10 pm - 11:33 amSEA  Seattle/Tacoma Intl-MDT Harrisburg
9h 23m1 stop Detroit Metropolitan Wayne County
$381Delta
Sat, Oct 31 - Tue, Nov 3
Delta Logo
6:13 am - 11:00 amMDT  Harrisburg-SEA Seattle/Tacoma Intl
7h 47m1 stop Detroit Metropolitan Wayne County
Delta Logo
11:10 pm - 11:33 amSEA  Seattle/Tacoma Intl-MDT Harrisburg
9h 23m1 stop Detroit Metropolitan Wayne County
$381Delta
Sat, Dec 5 - Wed, Dec 9
American Airlines Logo
2:56 pm - 9:59 pmMDT  Harrisburg-SEA Seattle/Tacoma Intl
10h 03m1 stop Philadelphia
American Airlines Logo
12:38 pm - 11:21 pmSEA  Seattle/Tacoma Intl-MDT Harrisburg
7h 43m1 stop Charlotte Douglas
$381American Airlines
Tue, Oct 27 - Sat, Oct 31
Delta Logo
2:56 pm - 10:03 pmMDT  Harrisburg-SEA Seattle/Tacoma Intl
10h 07m1 stop Atlanta Hartsfield-Jackson
Delta Logo
6:00 am - 4:06 pmSEA  Seattle/Tacoma Intl-MDT Harrisburg
7h 06m1 stop Detroit Metropolitan Wayne County
$381Delta
Sat, Dec 5 - Wed, Dec 9
United Airlines Logo
6:17 am - 1:49 pmMDT  Harrisburg-SEA Seattle/Tacoma Intl
10h 32m2 stops Chicago O'Hare Intl Denver Intl
United Airlines Logo
10:48 am - 8:54 pmSEA  Seattle/Tacoma Intl-MDT Harrisburg
7h 06m1 stop Chicago O'Hare Intl
$386United Airlines
Sat, Nov 7 - Wed, Nov 11
United Airlines Logo
8:15 am - 5:59 pmMDT  Harrisburg-SEA Seattle/Tacoma Intl
12h 44m2 stops Chicago O'Hare Intl Denver Intl
United Airlines Logo
8:09 am - 6:36 pmSEA  Seattle/Tacoma Intl-MDT Harrisburg
7h 27m1 stop Washington, D.C. Dulles Intl
$386United Airlines
Thu, Nov 5 - Wed, Nov 11
Alaska Airlines Logo
6:34 am - 4:57 pmMDT  Harrisburg-SEA Seattle/Tacoma Intl
13h 23m2 stops Chicago O'Hare Intl Boise Air Term. Gowen Fld
Alaska Airlines Logo
8:44 am - 7:22 pmSEA  Seattle/Tacoma Intl-MDT Harrisburg
7h 38m1 stop Chicago O'Hare Intl
$685Alaska Airlines
Thu, Nov 5 - Wed, Nov 11
Alaska Airlines Logo
6:34 am - 4:57 pmMDT  Harrisburg-SEA Seattle/Tacoma Intl
13h 23m2 stops Chicago O'Hare Intl Boise Air Term. Gowen Fld
Alaska Airlines Logo
9:56 am - 10:15 pmSEA  Seattle/Tacoma Intl-MDT Harrisburg
9h 19m2 stops Boise Air Term. Gowen Fld Chicago O'Hare Intl
$690Alaska Airlines
Booking Insights

Price, demand and travel trends for Harrisburg to Seattle flights

Use KAYAK data on prices, travel dates, airlines and seasonal trends to compare options and book flights from Harrisburg to Seattle with more confidence.

How much is a round-trip flight from Harrisburg to Seattle?

Round-trip flights from Harrisburg to Seattle start at $380. Prices are typical for this route right now, with typical round-trip fares ranging from $360 to $572. The lowest price found in the past 5 days was $380 on American Airlines.

What's the cheapest day of the week to fly from Harrisburg to Seattle?

Tuesday is the cheapest day of the week to fly from Harrisburg to Seattle, it is 13% cheaper than the average day. Monday is the most expensive day with flight prices 31% higher than average. Based on deals found by KAYAK users in the last 12 months.

What is the cheapest month to fly from Harrisburg to Seattle?

•February is the cheapest month to fly from Harrisburg to Seattle at $359 round-trip.
•June ($629) and July ($498) are the most expensive months.
•The price difference between flying in the cheapest and most expensive months is 75% on average.
This is based on KAYAK aggregated and averaged internal data over the past 12 months.

When are prices from Harrisburg to Seattle the cheapest?

Flights from Harrisburg to Seattle are cheapest 20 weeks before departure. Booking in this window typically costs about 39% less than the average last-minute fare (within 2 weeks of the flight), based on KAYAK data.

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Key details for Harrisburg to Seattle flights

Low season

January

Cheapest flight

$303
Best time to beat the crowds with an average 6% drop in price.
Most popular time to fly with an average 38% increase in price.
Flight from Harrisburg to Seattle

When to book flights from Harrisburg to Seattle

Are your dates flexible? Find out the best times to travel from Harrisburg to Seattle based on our flight data from the last year. Discover the cheapest month and even day to fly.
Estimated round-trip price

Your Harrisburg to Seattle flight questions, answered

Find helpful route details based on KAYAK data, including flight times, airports, airlines and booking questions.

  • Which airports can I use when flying from Harrisburg to Seattle?

    Flights from Harrisburg to Seattle usually depart from Harrisburg (MDT) and arrive at Seattle/Tacoma Intl (SEA).

  • What cabin classes can I book on flights from Harrisburg to Seattle?

    Two cabin classes are available on flights from Harrisburg to Seattle:

    • Economy Class
    • First Class

  • Which airports do connecting flights from Harrisburg to Seattle pass through?

    One-stop flights from Harrisburg to Seattle most commonly connect through:

    • Chicago O'Hare Intl (ORD) - 80% of one-stop connections
    • Charlotte Douglas (CLT) - 7% of one-stop connections
    • Philadelphia (PHL) - 5% of one-stop connections
    • Washington, D.C. Dulles Intl (IAD) - 4% of one-stop connections

    Chicago O'Hare Intl (ORD) handles the largest share of one-stop connections on this route.

  • Can I save money by using flexible dates for flights from Harrisburg to Seattle?

    Yes. Being flexible with your travel dates can save you up to 34% on the Harrisburg to Seattle route. Tuesday is the cheapest departure day at $398 round-trip on average, while Monday is the most expensive at $601, a difference of $203. KAYAK's flexible dates feature shows options up to 3 days before and after your selected dates, making it easier to compare nearby fares.

  • What popular places can I visit in Seattle?

    Some of the most popular sights in Seattle are Pike Place Market, Lumen Field and Space Needle. These are among the most viewed places in Seattle on KAYAK.

  • How expensive are last-minute Harrisburg to Seattle flights?

    Last-minute fares on this route - booked within 2 weeks of departure - run 22% above the route average of $456. Book 20 weeks before departure for the lowest fares.

  • How long is a flight from Harrisburg to Seattle?

    A nonstop flight from Harrisburg to Seattle takes 0h 00m, covering 2,289 miles.

  • Do I need a passport to fly from Harrisburg to Seattle?

    No, a passport is not required for this domestic route, but you will need a real ID-compliant driver's license, a state ID, or another TSA-accepted form of identification.

  • Have flight prices from Harrisburg to Seattle changed much recently?

    Yes. Based on fares seen in the past 5 days, round-trip prices on this route showed a wide range, from about $380 to $1,326. That means the highest observed fare was about 3x higher than the lowest one.

  • How are flight prices from Harrisburg to Seattle looking right now?

    One-way fares from Harrisburg to Seattle are currently higher than usual. Average one-way flight prices are about $358, which is 29% above the typical average for this route.

  • How much time can I save by choosing a different layover airport from Harrisburg to Seattle?

    Flying via Detroit Metropolitan Wayne County (DTW) gives the shortest average 1-stop total travel time at 7h 13m, compared with 7h 55m via Washington, D.C. Dulles Intl (IAD) and 8h 12m via Chicago O'Hare Intl (ORD).

  • What is the time difference between Harrisburg and Seattle?

    Seattle is 3 hours behind Harrisburg (Pacific Time vs Eastern Time). Plan for the time shift when scheduling connections or first-day activities.

  • What car rental options are available at Seattle/Tacoma Intl Airport (SEA)?

    Seattle/Tacoma Intl Airport (SEA) hosts 5 major car rental companies, with daily rates starting from around $4 for economy cars. Top options include:
    • Fox
    • Europcar
    • Thrifty
    • Budget
    • Dollar

  • How much should I expect to pay for a Harrisburg to Seattle flight?

    Round-trip flights from Harrisburg to Seattle range from $360 to $572, with an average of $456 over the past 12 months. Anything below $360 counts as a good deal.

Your guide to booking Harrisburg to Seattle flights

Get tips on when to book, when to fly and what to know before your trip.
  • If your dates can be flexible, aim for a Tuesday departure instead of Monday. On this route, Tuesday flights average $398 - about $203 less than Monday (34% savings) based on the last 12 months.
  • For the best chance at a low fare, aim to book around 20 weeks before you fly. On this route, that window historically saves about 39% versus last-minute pricing (KAYAK booking data, last 12 months).
  • If you can choose when to travel, plan your Harrisburg to Seattle trip for February. Fares historically average $359 round-trip in that month - typically $270 less than the most expensive month, which is June (based on the last 12 months).
  • If you're arriving late at night and need somewhere to stay, check out these hotels close to Seattle/Tacoma Intl Airport.
    - Seattle Airport Marriott
    - Coast Gateway Hotel
    - Fairfield by Marriott Inn & Suites Seattle Sea-Tac Airport

More options for your flight from Harrisburg to Seattle

Complete your trip to Seattle with a hotel stay or car rental

Car rentals in Seattle
Hotels in Seattle
Vacations in Seattle