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Cheap flights from Harrisburg to Seattle from $210

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 8/15. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
1 adult
1 adult, Economy, 0 bags

Discover deals from 900+ travel sites with momondo.

Find the cheapest flights from Harrisburg to Seattle

Cheap round-trip flights

Enter your travel dates to find the best prices.
American Airlines Logo
1:25 pm - 8:52 pm
MDT
-
SEA
10h 27m
1 stop
American Airlines Logo
11:56 pm - 12:45 pm
SEA
-
MDT
9h 49m
1 stop
$351American Airlines
Wed, Aug 12 - Wed, Aug 26
United Airlines Logo
2:17 pm - 9:31 pm
MDT
-
SEA
10h 14m
2 stops
United Airlines Logo
11:14 pm - 9:40 am
SEA
-
MDT
7h 26m
1 stop
$356United Airlines
Tue, Sep 1 - Sat, Oct 3
American Airlines Logo
6:54 pm - 12:11 am
MDT
-
SEA
8h 17m
1 stop
American Airlines Logo
11:57 pm - 11:23 am
SEA
-
MDT
8h 26m
1 stop
$360American Airlines
Thu, Sep 24 - Wed, Sep 30
United Airlines Logo
2:41 pm - 10:53 pm
MDT
-
SEA
11h 12m
2 stops
United Airlines Logo
7:00 am - 4:47 pm
SEA
-
MDT
6h 47m
1 stop
$365United Airlines
Wed, Nov 4 - Sun, Nov 8
Delta Logo
2:56 pm - 10:03 pm
MDT
-
SEA
10h 07m
1 stop
Delta Logo
11:05 pm - 11:53 am
SEA
-
MDT
9h 48m
1 stop
$369Delta
Fri, Nov 6 - Mon, Nov 9
United Airlines Logo
5:54 pm - 10:43 pm
MDT
-
SEA
7h 49m
1 stop
United Airlines Logo
7:35 pm - 9:51 am
SEA
-
MDT
11h 16m
2 stops
$374United Airlines
Fri, Aug 28 - Mon, Aug 31
United Airlines Logo
5:54 pm - 10:45 pm
MDT
-
SEA
7h 51m
1 stop
United Airlines Logo
11:00 pm - 9:51 am
SEA
-
MDT
7h 51m
1 stop
$380United Airlines
Fri, Sep 11 - Sun, Sep 20
American Airlines Logo
2:45 pm - 9:59 pm
MDT
-
SEA
10h 14m
1 stop
American Airlines Logo
9:58 pm - 10:36 am
SEA
-
MDT
9h 38m
1 stop
$381American Airlines
Thu, Sep 3 - Tue, Sep 8
United Airlines Logo
5:54 pm - 10:45 pm
MDT
-
SEA
7h 51m
1 stop
United Airlines Logo
11:00 pm - 9:51 am
SEA
-
MDT
7h 51m
1 stop
$387United Airlines
Sun, Sep 13 - Sun, Sep 20
American Airlines Logo
6:00 am - 12:50 pm
MDT
-
SEA
9h 50m
1 stop
American Airlines Logo
12:40 pm - 11:11 pm
SEA
-
MDT
7h 31m
1 stop
$390American Airlines
Thu, Sep 10 - Thu, Sep 24

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Alaska Airlines flights from Harrisburg to Seattle

Our best Alaska Airlines deals on Harrisburg to Seattle flight tickets
Alaska Airlines
Jul 21
MDT11:41 amHarrisburg
11h 54m
2 stops
SEA8:35 pmSeattle/Tacoma Intl
Jul 28
SEA10:14 amSeattle/Tacoma Intl
21h 57m
2 stops
MDT11:11 amHarrisburg
$702
Alaska Airlines
Jul 15
MDT5:00 pmHarrisburg
9h 04m
1 stop
SEA11:04 pmSeattle/Tacoma Intl
Jul 20
SEA8:25 pmSeattle/Tacoma Intl
11h 46m
2 stops
MDT11:11 amHarrisburg
$713
Alaska Airlines
Jul 17
MDT5:43 amHarrisburg
7h 54m
1 stop
SEA10:37 amSeattle/Tacoma Intl
Jul 20
SEA5:59 pmSeattle/Tacoma Intl
14h 12m
2 stops
MDT11:11 amHarrisburg
$839

American Airlines flights from Harrisburg to Seattle

Our best American Airlines deals on Harrisburg to Seattle flight tickets
American Airlines
Aug 12
MDT1:25 pmHarrisburg
10h 27m
1 stop
SEA8:52 pmSeattle/Tacoma Intl
Aug 26
SEA11:56 pmSeattle/Tacoma Intl
9h 49m
1 stop
MDT12:45 pmHarrisburg
$351
American Airlines
Sep 24
MDT6:54 pmHarrisburg
8h 17m
1 stop
SEA12:11 amSeattle/Tacoma Intl
Sep 30
SEA11:57 pmSeattle/Tacoma Intl
8h 26m
1 stop
MDT11:23 amHarrisburg
$360
American Airlines
Sep 3
MDT2:45 pmHarrisburg
10h 14m
1 stop
SEA9:59 pmSeattle/Tacoma Intl
Sep 8
SEA9:58 pmSeattle/Tacoma Intl
9h 38m
1 stop
MDT10:36 amHarrisburg
$381

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 July 11, 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

Wed 8/12

1:25 pm-8:52 pm

1 stop10h 27m

Seattle/Tacoma Intl

Wed 8/26

11:56 pm-12:45 pm

1 stop9h 49m

$351

HarrisburgSeattle

MDT - SEA

MDTSEA

Harrisburg

Tue 9/1

2:17 pm-9:31 pm

2 stops10h 14m

Seattle/Tacoma Intl

Sat 10/3

11:14 pm-9:40 am

1 stop7h 26m

$356

HarrisburgSeattle

MDT - SEA

MDTSEA

Harrisburg

Thu 9/24

6:54 pm-12:11 am

1 stop8h 17m

Seattle/Tacoma Intl

Wed 9/30

11:57 pm-11:23 am

1 stop8h 26m

$360

HarrisburgSeattle

MDT - SEA

MDTSEA

Harrisburg

Wed 11/4

2:41 pm-10:53 pm

2 stops11h 12m

Seattle/Tacoma Intl

Sun 11/8

7:00 am-4:47 pm

1 stop6h 47m

$365

HarrisburgSeattle

MDT - SEA

MDTSEA

Harrisburg

Fri 11/6

2:56 pm-10:03 pm

1 stop10h 07m

Seattle/Tacoma Intl

Mon 11/9

11:05 pm-11:53 am

1 stop9h 48m

$369

HarrisburgSeattle

MDT - SEA

MDTSEA

Harrisburg

Fri 8/28

5:54 pm-10:43 pm

1 stop7h 49m

Seattle/Tacoma Intl

Mon 8/31

7:35 pm-9:51 am

2 stops11h 16m

$374
Quickest round-trip

HarrisburgSeattle

MDT - SEA

MDTSEA

Harrisburg

Fri 9/11

5:54 pm-10:45 pm

1 stop7h 51m

Seattle/Tacoma Intl

Sun 9/20

11:00 pm-9:51 am

1 stop7h 51m

$380

HarrisburgSeattle

MDT - SEA

MDTSEA

Harrisburg

Thu 9/3

2:45 pm-9:59 pm

1 stop10h 14m

Seattle/Tacoma Intl

Tue 9/8

9:58 pm-10:36 am

1 stop9h 38m

$381

HarrisburgSeattle

MDT - SEA

MDTSEA

Harrisburg

Sun 9/13

5:54 pm-10:45 pm

1 stop7h 51m

Seattle/Tacoma Intl

Sun 9/20

11:00 pm-9:51 am

1 stop7h 51m

$387

HarrisburgSeattle

MDT - SEA

MDTSEA

Harrisburg

Thu 9/10

6:00 am-12:50 pm

1 stop9h 50m

Seattle/Tacoma Intl

Thu 9/24

12:40 pm-11:11 pm

1 stop7h 31m

$390

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 from Harrisburg 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 $444 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 52% 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 July 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 50m

Direct flights

None
The fastest flight from Harrisburg to Seattle takes 7h 50m
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 50m.

  • 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 $159Free CancellationRating
7.8
8,459 reviews
Search Delta flights
United AirlinesPriceFrom $258Free CancellationRating
7.4
9,980 reviews
Search United Airlines flights
American AirlinesPriceFrom $293Free CancellationRating
7.1
11,804 reviews
Search American Airlines flights
Alaska AirlinesPriceFrom $422Free CancellationRating
7.9
12,655 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
Lakewood
Puyallup
Tukwila
Federal Way
Cle Elum
Marysville
Fife
Centralia
Kirkland
Shoreline
Lacey

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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