Cheap Flights from Harrisburg International to Seattle / Tacoma International

Compare Harrisburg International to Seattle / Tacoma International flight deals

Find the cheapest month or even day of the year to fly to Seattle / Tacoma International

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Flight deals from Harrisburg International to Seattle / Tacoma International

Looking for a cheap last-minute deal or the best return flight from Harrisburg International Airport to Seattle / Tacoma International Airport? If you want to travel next month, return fares start from R 7,387. Find the lowest prices on one-way and return tickets right here.

Find the cheapest month to fly from Harrisburg International to Seattle / Tacoma International

We’re always keeping an eye on fares, so you can find the best one in seconds. It looks like Harrisburg International to Seattle / Tacoma International flights are currently cheapest in August.

Harrisburg International to Seattle / Tacoma International: Alternative routes

Compare routes from Harrisburg International to Seattle below. You may find an airport to fly into that's cheaper, faster, or easier than Seattle / Tacoma International.

Harrisburg to Seattle: Flight information

The things to know before you go.
Cheapest flight foundR 3,328
Cheapest month to flyAugust

Finding cheap flights from Harrisburg International to Seattle / Tacoma International: Frequently asked questions

The best price we found for a return flight from Harrisburg International to Seattle / Tacoma International is R 4,517. This is an estimate based on information collected from different airlines and travel providers over the last 4 days and is subject to change and availability.
Currently, there are no airlines that fly direct from Harrisburg International to Seattle / Tacoma International. But we found flights with one or more stops from R 4,517.
As of May 2026, there are no flights flying from Harrisburg International to Seattle / Tacoma International.
The cheapest month to fly from Harrisburg International to Seattle / Tacoma International is usually October.
After crunching the numbers on our flight calendar, we found that it's currently cheapest to fly from Harrisburg International Airport to Seattle / Tacoma International Airport on Wednesday, 14 October 2026.
No airlines currently offer direct flights between Harrisburg International Airport and Seattle / Tacoma International Airport. Most routes have one or more stops.
We show every price from over 1,200 airlines and travel agents, comparing them all so you don’t have to. If you know you want to fly to Seattle / Tacoma International but you’re not ready to book, set up a Price Alert. We’ll track prices for you, and let you know when they rise or fall.
We crunched all the numbers in our flight calendar and it looks like the cheapest time to book a flight to Seattle is around 40 days in advance, so don’t leave your flight to the last minute.
Currently, Delta offers the cheapest flight tickets to Seattle / Tacoma International.

Flying from Harrisburg International Airport (MDT) to Seattle-Tacoma International Airport (SEA): what you need to know

  • Seattle's timezone is UTC-7, making Seattle three hours behind Harrisburg.

  • Arrive at the airport on time so you don't miss your MDT to SEA flight. Be there at least two hours ahead for international flights and an hour early for domestic departures to avoid any last-minute rush.

  • You can expect longer lines during popular months such as July. Arriving up to four hours in advance for international flights and two hours for a domestic departure is a smart move.

  • Consider adding a stopover when booking your ticket from Harrisburg International Airport to Seattle-Tacoma International Airport. Simply uncheck 'Direct flights only' to break up your journey, or perhaps see a new city along the way. Here's where you can stop between MDT and SEA:

    • O'Hare International Airport

    • Philadelphia International Airport

    • Washington Dulles International Airport

How to find the cheapest flights from Harrisburg International Airport (MDT) to Seattle-Tacoma International Airport (SEA)

  • R 3,328 is the best price for a one-way Harrisburg International Airport to Seattle-Tacoma International Airport flight. A return flight starts at R 4,494. These prices can change depending on availability and demand.

  • It's usually smart to book as early as possible if you want to get cheap tickets from MDT to SEA. That's because flight prices are based on demand, which tends to increase closer to departure.

  • If you're flexible with your trip dates, try using the 'Whole month' tool. It'll give you the lowest price across each month when looking for a flight from Harrisburg International Airport to Seattle-Tacoma International Airport.

  • Getting your hands on cheap flights from MDT to SEA is easy with Price Alerts. Simply create one of these automatic alerts and we'll notify you when fares go down.

  • Select your preferred arrival and departure times, airlines and number of stops with the filters. Alternatively, sort your results by 'Cheapest' to get the best deals on flights from Harrisburg International Airport to Seattle-Tacoma International Airport.

Handy information about Harrisburg International Airport (MDT)

  • MDT's address is One Terminal Drive.

  • 77.41% of flights departing from Harrisburg International Airport arrive at their destination on schedule.

  • To get to Harrisburg International Airport from central Harrisburg, it takes around 20 minutes if you're planning to drive. This depends on traffic, however. It's approximately 19 kilometres from the airport to the city centre.

  • The journey when using public transport takes roughly 40 minutes.

  • Have an early flight from Harrisburg International Airport to Seattle-Tacoma International Airport? Avoid the last-minute rush to the terminal (and catch some extra z's) by picking one of these stays close to MDT:

Arriving at Seattle-Tacoma International Airport (SEA)

Getting from Seattle-Tacoma International Airport (SEA) to central Seattle

  • From Seattle-Tacoma International Airport, Seattle is approximately 23 kilometres away. It takes around 20 minutes to get to the centre driving.

  • It typically takes 55 minutes if you're using public transport.

When to fly to Seattle-Tacoma International Airport (SEA)

  • It's time to work out your trip dates for your flight from Harrisburg International Airport to Seattle-Tacoma International Airport. July is the busiest month to visit Seattle. If you prefer a more low-key vibe, go in May.

  • When booking your flight from Harrisburg International Airport to Seattle-Tacoma International Airport, think about the kind of weather you like. August is the warmest month in Seattle, with temperatures ranging from 12ºC (54ºF) to 28ºC (82ºF).

  • Search for cheap tickets from MDT to SEA in February if you like cooler conditions. Temperatures are at their lowest then, ranging between -1ºC (30ºF) and 11ºC (52ºF) on average.

Explore more of United States

  • You've visited Seattle, now it's time to discover other parts of United States. Travel around 241 kilometres south to Portland to tick off its popular sights. From Pioneer Courthouse Square to Portland Japanese Garden and Pittock Mansion, you've got a jam-packed schedule ahead.

  • Spokane is another favourite destination in United States and is around 370 kilometres east of Seattle. No journey is complete without dropping by Manito Park, Northwest Museum of Arts & Culture and Spokane Falls.

Prices shown on this page are estimated lowest prices only. Found in the last 45 days.