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Cheap flights from Harrisburg to Seattle from $149

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 5/4. 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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Find the cheapest flights from Harrisburg to Seattle

Cheap round-trip flights

Enter your travel dates to find the best prices.
American Airlines Logo
5:41 am - 10:14 am
MDT
-
SEA
7h 33m
1 stop
American Airlines Logo
11:33 pm - 11:23 am
SEA
-
MDT
8h 50m
1 stop
$261American Airlines
Tue, May 12 - Tue, May 19
United Airlines Logo
5:54 pm - 10:47 pm
MDT
-
SEA
7h 53m
1 stop
United Airlines Logo
10:53 pm - 10:07 am
SEA
-
MDT
8h 14m
1 stop
$297United Airlines
Fri, May 1 - Mon, May 4
Delta Logo
5:00 pm - 10:46 pm
MDT
-
SEA
8h 46m
1 stop
Delta Logo
5:30 am - 4:54 pm
SEA
-
MDT
8h 24m
1 stop
$304Delta
Tue, Jun 2 - Sat, Jun 13
American Airlines Logo
4:36 pm - 10:38 pm
MDT
-
SEA
9h 02m
1 stop
American Airlines Logo
1:19 pm - 11:52 pm
SEA
-
MDT
7h 33m
1 stop
$306American Airlines
Wed, May 13 - Wed, May 20
United Airlines Logo
5:52 pm - 10:42 pm
MDT
-
SEA
7h 50m
1 stop
United Airlines Logo
10:41 pm - 9:44 am
SEA
-
MDT
8h 03m
1 stop
$322United Airlines
Wed, Apr 29 - Sun, May 3
American Airlines Logo
6:34 am - 11:46 am
MDT
-
SEA
8h 12m
1 stop
American Airlines Logo
6:00 am - 6:28 pm
SEA
-
MDT
9h 28m
1 stop
$324American Airlines
Wed, May 27 - Sat, Jul 4
United Airlines Logo
5:54 pm - 10:47 pm
MDT
-
SEA
7h 53m
1 stop
United Airlines Logo
5:02 am - 4:53 pm
SEA
-
MDT
8h 51m
2 stops
$329United Airlines
Mon, May 4 - Sat, May 9
American Airlines Logo
5:00 pm - 11:35 pm
MDT
-
SEA
9h 35m
1 stop
American Airlines Logo
6:00 am - 4:15 pm
SEA
-
MDT
7h 15m
1 stop
$330American Airlines
Thu, Jul 2 - Tue, Jul 7
American Airlines Logo
7:17 pm - 12:16 am
MDT
-
SEA
7h 59m
1 stop
American Airlines Logo
10:35 pm - 10:08 am
SEA
-
MDT
8h 33m
1 stop
$334American Airlines
Tue, Jun 9 - Tue, Jun 16
United Airlines Logo
2:05 pm - 6:46 pm
MDT
-
SEA
7h 41m
1 stop
United Airlines Logo
11:59 pm - 10:07 am
SEA
-
MDT
7h 08m
1 stop
$347United Airlines
Sat, Apr 25 - Wed, Apr 29

Alaska Airlines flights from Harrisburg to Seattle

Our best Alaska Airlines deals on Harrisburg to Seattle flight tickets
Alaska Airlines
Apr 30
MDT2:50 pmHarrisburg
10h 12m
1 stop
SEA10:02 pmSeattle/Tacoma Intl
May 9
SEA9:44 pmSeattle/Tacoma Intl
8h 48m
1 stop
MDT9:32 amHarrisburg
$365
Alaska Airlines
Apr 30
MDT2:50 pmHarrisburg
10h 12m
1 stop
SEA10:02 pmSeattle/Tacoma Intl
May 9
SEA9:07 amSeattle/Tacoma Intl
11h 45m
2 stops
MDT11:52 pmHarrisburg
$402
Alaska Airlines
Jun 3
MDT6:00 amHarrisburg
12h 40m
2 stops
SEA3:40 pmSeattle/Tacoma Intl
Jun 8
SEA9:22 pmSeattle/Tacoma Intl
9h 46m
1 stop
MDT10:08 amHarrisburg
$425

American Airlines flights from Harrisburg to Seattle

Our best American Airlines deals on Harrisburg to Seattle flight tickets
American Airlines
May 12
MDT5:41 amHarrisburg
7h 33m
1 stop
SEA10:14 amSeattle/Tacoma Intl
May 19
SEA11:33 pmSeattle/Tacoma Intl
8h 50m
1 stop
MDT11:23 amHarrisburg
$261
American Airlines
May 13
MDT4:36 pmHarrisburg
9h 02m
1 stop
SEA10:38 pmSeattle/Tacoma Intl
May 20
SEA1:19 pmSeattle/Tacoma Intl
7h 33m
1 stop
MDT11:52 pmHarrisburg
$306
American Airlines
May 27
MDT6:34 amHarrisburg
8h 12m
1 stop
SEA11:46 amSeattle/Tacoma Intl
Jul 4
SEA6:00 amSeattle/Tacoma Intl
9h 28m
1 stop
MDT6:28 pmHarrisburg
$324

momondo Fare Finder

 
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, momondo users made 832,500 searches. Data last updated April 13, 2026.
Use the filters below to find and compare flights from Harrisburg to Seattle that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

HarrisburgSeattle

MDT - SEA

MDTSEA

Harrisburg

Tue 5/12

5:41 am-10:14 am

1 stop7h 33m

Seattle/Tacoma Intl

Tue 5/19

11:33 pm-11:23 am

1 stop8h 50m

$261

HarrisburgSeattle

MDT - SEA

MDTSEA

Harrisburg

Fri 5/1

5:54 pm-10:47 pm

1 stop7h 53m

Seattle/Tacoma Intl

Mon 5/4

10:53 pm-10:07 am

1 stop8h 14m

$297

HarrisburgSeattle

MDT - SEA

MDTSEA

Harrisburg

Tue 6/2

5:00 pm-10:46 pm

1 stop8h 46m

Seattle/Tacoma Intl

Sat 6/13

5:30 am-4:54 pm

1 stop8h 24m

$304

HarrisburgSeattle

MDT - SEA

MDTSEA

Harrisburg

Wed 5/13

4:36 pm-10:38 pm

1 stop9h 02m

Seattle/Tacoma Intl

Wed 5/20

1:19 pm-11:52 pm

1 stop7h 33m

$306

HarrisburgSeattle

MDT - SEA

MDTSEA

Harrisburg

Wed 4/29

5:52 pm-10:42 pm

1 stop7h 50m

Seattle/Tacoma Intl

Sun 5/3

10:41 pm-9:44 am

1 stop8h 03m

$322

HarrisburgSeattle

MDT - SEA

MDTSEA

Harrisburg

Wed 5/27

6:34 am-11:46 am

1 stop8h 12m

Seattle/Tacoma Intl

Sat 7/4

6:00 am-6:28 pm

1 stop9h 28m

$324

HarrisburgSeattle

MDT - SEA

MDTSEA

Harrisburg

Mon 5/4

5:54 pm-10:47 pm

1 stop7h 53m

Seattle/Tacoma Intl

Sat 5/9

5:02 am-4:53 pm

2 stops8h 51m

$329

HarrisburgSeattle

MDT - SEA

MDTSEA

Harrisburg

Thu 7/2

5:00 pm-11:35 pm

1 stop9h 35m

Seattle/Tacoma Intl

Tue 7/7

6:00 am-4:15 pm

1 stop7h 15m

$330

HarrisburgSeattle

MDT - SEA

MDTSEA

Harrisburg

Tue 6/9

7:17 pm-12:16 am

1 stop7h 59m

Seattle/Tacoma Intl

Tue 6/16

10:35 pm-10:08 am

1 stop8h 33m

$334
Quickest round-trip

HarrisburgSeattle

MDT - SEA

MDTSEA

Harrisburg

Sat 4/25

2:05 pm-6:46 pm

1 stop7h 41m

Seattle/Tacoma Intl

Wed 4/29

11:59 pm-10:07 am

1 stop7h 08m

$347

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first
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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, January 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 $298. If you don’t want to visit Seattle in January, then you should wait until February to fly from Harrisburg, when ticket prices are also cheap, with an average price of $359.

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 $429 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 $305 on momondo.

Can stopping save me money on Harrisburg to Seattle flights?

You could potentially save up to 14% on your flight if you consider stops on a Harrisburg to Seattle flight.

How have Harrisburg to Seattle flight prices changed over time?

As of April 2026, prices for Harrisburg to Seattle flights are approximately 39% 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

Fastest flight time

7h 49m

Direct flights

None
The fastest flight from Harrisburg to Seattle takes 7h 49m
There are no direct flights from Harrisburg to Seattle. There are no popular flight routes from Harrisburg to Seattle.
Search flight deals

Frequently asked questions about flying from Harrisburg to Seattle

  • 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 49m.

  • 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 $258Free CancellationRating
7.9
8,406 reviews
Search Delta flights
United AirlinesPriceFrom $258Free CancellationRating
7.4
9,579 reviews
Search United Airlines flights
American AirlinesPriceFrom $286Free CancellationRating
7.1
11,565 reviews
Search American Airlines flights
Alaska AirlinesPriceFrom $422Free CancellationRating
7.9
12,227 reviews
Search Alaska Airlines flights

Traveling to a place near Seattle?

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

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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