Cheap flights from Harrisburg to Seattle from $126

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Harrisburg to Seattle departing on 8/5. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
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0 bags

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Cheap round-trip flights

United Airlines Logo
2:24 pm - 8:42 pmMDT-SEA
9h 18m1 stop
United Airlines Logo
11:54 pm - 10:14 amSEA-MDT
7h 20m1 stop
$240United Airlines
Find Deal
Sat, Aug 30 - Sat, Sep 6
American Airlines Logo
4:56 pm - 11:41 pmMDT-SEA
9h 45m2 stops
American Airlines Logo
7:45 am - 6:01 pmSEA-MDT
7h 16m1 stop
$245American Airlines
Find Deal
Sat, Aug 30 - Sat, Sep 6
American Airlines Logo
2:49 pm - 10:00 pmMDT-SEA
10h 11m1 stop
American Airlines Logo
10:50 pm - 10:07 amSEA-MDT
8h 17m1 stop
$253American Airlines
Find Deal
Tue, Aug 19 - Mon, Aug 25
United Airlines Logo
5:48 pm - 10:30 pmMDT-SEA
7h 42m1 stop
United Airlines Logo
11:40 pm - 10:14 amSEA-MDT
7h 34m1 stop
$270United Airlines
Find Deal
Sat, Oct 18 - Fri, Oct 24
United Airlines Logo
5:48 pm - 10:30 pmMDT-SEA
7h 42m1 stop
United Airlines Logo
11:40 pm - 1:54 pmSEA-MDT
11h 14m2 stops
$275United Airlines
Find Deal
Sat, Oct 18 - Fri, Oct 24
United Airlines Logo
2:24 pm - 10:20 pmMDT-SEA
10h 56m2 stops
United Airlines Logo
5:02 am - 4:54 pmSEA-MDT
8h 52m2 stops
$281United Airlines
Find Deal
Sat, Aug 30 - Sat, Sep 6
American Airlines Logo
6:15 am - 11:03 amMDT-SEA
7h 48m1 stop
American Airlines Logo
11:56 pm - 1:07 pmSEA-MDT
10h 11m1 stop
$287American Airlines
Find Deal
Sat, Oct 18 - Sat, Oct 25
Alaska Airlines Logo
5:00 am - 10:34 amMDT-SEA
8h 34m1 stop
Alaska Airlines Logo
12:59 am - 12:49 pmSEA-MDT
8h 50m1 stop
$387Alaska Airlines
Find Deal
Sat, Aug 30 - Fri, Sep 5
Alaska Airlines Logo
6:00 am - 12:34 pmMDT-SEA
9h 34m1 stop
Alaska Airlines Logo
12:59 am - 11:01 amSEA-MDT
7h 02m1 stop
$428Alaska Airlines
Find Deal
Wed, Sep 17 - Mon, Sep 22
Frontier Logo
10:43 am - 12:34 amMDT-SEA
16h 51m2 stops
Frontier Logo
4:40 pm - 9:58 amSEA-MDT
14h 18m2 stops
$457Frontier
Find Deal
Fri, Aug 22 - Sun, Aug 24

Alaska Airlines flights from Harrisburg to Seattle

Our best Alaska Airlines deals on Harrisburg to Seattle flight tickets
Alaska Airlines
Aug 30
MDT5:00 amHarrisburg
8h 34m
1 stop
SEA10:34 amSeattle/Tacoma Intl
Sep 5
SEA12:59 amSeattle/Tacoma Intl
8h 50m
1 stop
MDT12:49 pmHarrisburg
Alaska Airlines
Sep 17
MDT6:00 amHarrisburg
9h 34m
1 stop
SEA12:34 pmSeattle/Tacoma Intl
Sep 22
SEA12:59 amSeattle/Tacoma Intl
7h 02m
1 stop
MDT11:01 amHarrisburg
Alaska Airlines
Sep 18
MDT4:55 pmHarrisburg
8h 05m
1 stop
SEA10:00 pmSeattle/Tacoma Intl
Sep 28
SEA12:59 amSeattle/Tacoma Intl
7h 02m
1 stop
MDT11:01 amHarrisburg

American Airlines flights from Harrisburg to Seattle

Our best American Airlines deals on Harrisburg to Seattle flight tickets
American Airlines
Aug 30
MDT4:56 pmHarrisburg
9h 45m
2 stops
SEA11:41 pmSeattle/Tacoma Intl
Sep 6
SEA7:45 amSeattle/Tacoma Intl
7h 16m
1 stop
MDT6:01 pmHarrisburg
American Airlines
Aug 19
MDT2:49 pmHarrisburg
10h 11m
1 stop
SEA10:00 pmSeattle/Tacoma Intl
Aug 25
SEA10:50 pmSeattle/Tacoma Intl
8h 17m
1 stop
MDT10:07 amHarrisburg
American Airlines
Oct 18
MDT6:15 amHarrisburg
7h 48m
1 stop
SEA11:03 amSeattle/Tacoma Intl
Oct 25
SEA11:56 pmSeattle/Tacoma Intl
10h 11m
1 stop
MDT1:07 pmHarrisburg

See travel insights to Seattle from

How to get the cheapest flight ticket from Harrisburg to Seattle

Look no further. We've gone through all the searches for this route on momondo so you have the important information and insights to find the cheapest flight ticket for your trip

What is the typical price of a round-trip flight between Harrisburg and Seattle?

What is the cheapest month to fly to Seattle?

In general, February is the cheapest month to fly from Harrisburg to Seattle. Due to it being the ‘off-season’ during this time, you can expect flight prices to be around $371. If you don’t want to visit Seattle in February, then you should wait until March to fly from Harrisburg, when ticket prices are also cheap, with an average price of $386.

What is the cheapest day to depart on your flight to Seattle?

On average, the least expensive day to fly to Seattle from Harrisburg is on a Wednesday. momondo users have found tickets for Wednesday departures for as low as $508. However, this price may fluctuate depending on the airline, the season, and holidays. On the other hand, Monday is the most expensive day to depart from Harrisburg because it is more convenient for both business and leisure travelers. As a result, prices tend to be around $643.

What is the cheapest time of day to depart on your flight to Seattle?

Flying to Seattle from Harrisburg at noon is the least expensive time of day to depart. momondo users have found prices as low as $454 when looking at flights departing at noon. Flights to Seattle are more costly in the morning, with an average ticket price of $578. Departure times in the morning fall within the peak daily travel times, which is why tickets can be more expensive.

What is the cheapest Harrisburg to Seattle/Tacoma Intl flight route?

Fly from Harrisburg to Seattle/Tacoma Intl for the best Harrisburg - Seattle/Tacoma Intl flight prices

How far in advance should I book a flight to Seattle?

You are more likely to see cheaper flights to Seattle from Harrisburg when booking weeks ahead of your departure date. In general, you can expect to find flights to Seattle for around $497 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Seattle from Harrisburg for as low as $391 on momondo.

What cabin class options are available on Harrisburg to Seattle/Tacoma Intl flights?

There are 2 cabin classes available to choose from on Harrisburg to Seattle/Tacoma Intl flights. Cabin price and availability will vary by airline so perform a search above to find the right deals for you.

How have Harrisburg to Seattle flight prices changed over time?

As of July 2025, prices for Harrisburg to Seattle flights are approximately 9% cheaper when compared to flights at the same time last year.

When to book flights from Harrisburg to Seattle

Are you open to changing your travel dates? Check out the ideal times to fly from Harrisburg to Seattle according to our flight data. Find out which month and days have the cheapest flights.
Estimated round-trip price

Cheap Harrisburg to Seattle (MDT to SEA) flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from Harrisburg to Seattle

Best Price Found

$126

Fastest flight time

7h 26m

Direct flights

None

Airports in Seattle

1 airport
The best one-way flight to Seattle from Harrisburg in the past 72 hours is $126. The best round-trip flight deal from Harrisburg to Seattle found on momondo in the last 72 hours is $240.
The fastest flight from Harrisburg to Seattle takes 7h 26m
There are no direct flights from Harrisburg to Seattle. Popular non-direct route for this connection is Harrisburg Airport - Seattle/Tacoma Intl Airport.
There is 1 airport near Seattle: Seattle/Tacoma Intl (SEA)

  • How far is Harrisburg to Seattle/Tacoma Intl by plane?

    The straight-line distance from Harrisburg to Seattle/Tacoma Intl is 2281.5 mi. A reasonable flight in good conditions will take 7h 26m.

  • When did momondo last update prices for flights from Harrisburg Airport to Seattle/Tacoma Intl Airport?

    Prices for flights from Harrisburg Airport to Seattle/Tacoma Intl Airport are updated daily.

  • How many operators does momondo search for flights from Harrisburg Airport to Seattle/Tacoma Intl Airport?

  • How old do you have to be to fly from Harrisburg Airport to Seattle/Tacoma Intl Airport?

    The minimum age a child must be to fly alone is five but airlines that offer an unaccompanied minor (UNMR) service will have their own age restrictions, including rules around flight length, timings, and stopovers. We always recommend checking with the individual airline you are booking with to travel from Harrisburg Airport to Seattle/Tacoma Intl Airport.

  • What documentation or ID do you need to fly to Seattle/Tacoma Intl Airport?

    The travel and health documents required for your trip to Seattle/Tacoma Intl Airport can vary based on your itinerary and personal situation. As a rule, consider having multiple documents such as a national ID card or driver’s license, and a passport valid for six-months after you plan to arrive at Seattle/Tacoma Intl Airport. We always recommend checking with your airline or a trusted third party such as IATA to get advice.

  • What is the most popular airline from Harrisburg to Seattle?


Best airlines flying from Harrisburg to Seattle

Compare and see reviews for airlines that fly from Harrisburg to Seattle with momondo
Airline
Rating
Free Cancellation
Price
DeltaPriceFrom $286Free CancellationRating
8.0
7,951 reviews
Search Delta flights
American AirlinesPriceFrom $307Free CancellationRating
7.2
10,000 reviews
Search American Airlines flights
United AirlinesPriceFrom $327Free CancellationRating
7.4
8,846 reviews
Search United Airlines flights
Alaska AirlinesPriceFrom $352Free CancellationRating
8.0
10,000 reviews
Search Alaska Airlines flights

Traveling to a place near Seattle?

Book flights to Seattle if you plan to visit one of these locations
Leavenworth
Tacoma
SeaTac
Ocean Shores
Olympia
Renton
Federal Way
Kent
Lynnwood
Puyallup
Marysville
Tukwila
Kirkland
Lakewood
Fife
Shoreline
Centralia
Cle Elum
Westport
Redmond

Why use momondo?

Why should I use momondo to find a flight deal from Harrisburg to Seattle?

momondo collates all your flight options in one place and lets you filter them to find the perfect flight from Harrisburg to Seattle. momondo saves you time and could save you money on your trip.

Can I find flights from Harrisburg to Seattle with flexible booking policies on momondo?

Yes. momondo enables you to select and highlight flights to Seattle from Harrisburg with this policy.

How can momondo help me find flights from Harrisburg to Seattle?

momondo provides multiple filters to help you find the best flight to Seattle from Harrisburg. Filter by price, airline, airports, cabin, aircraft, payment method, number of stops and more.

I’m not ready to book a flight from Harrisburg to Seattle right now. Can momondo alert me if prices change?

Of course. momondo tracks the price of Harrisburg to Seattle flights. All you need is a valid email address and we will do the rest; it is that quick and easy.


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1 adult
Tue 7/15
Tue 7/22

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