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Cheap flights from Harrisburg to Seattle from $181

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 9/11. 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.
United Airlines Logo
5:46 pm - 10:45 pmMDT  Harrisburg-SEA Seattle/Tacoma Intl
7h 59m1 stop Chicago O'Hare Intl
United Airlines Logo
11:00 pm - 9:51 amSEA  Seattle/Tacoma Intl-MDT Harrisburg
7h 51m1 stop Chicago O'Hare Intl
$361United Airlines
Sat, Sep 19 - Wed, Sep 23
United Airlines Logo
2:00 pm - 7:03 pmMDT  Harrisburg-SEA Seattle/Tacoma Intl
8h 03m1 stop Chicago O'Hare Intl
United Airlines Logo
8:09 am - 6:36 pmSEA  Seattle/Tacoma Intl-MDT Harrisburg
7h 27m1 stop Washington, D.C. Dulles Intl
$361United Airlines
Wed, Nov 4 - Wed, Nov 11
American Airlines Logo
2:35 pm - 9:05 pmMDT  Harrisburg-SEA Seattle/Tacoma Intl
9h 30m1 stop Philadelphia
American Airlines Logo
10:45 pm - 10:30 amSEA  Seattle/Tacoma Intl-MDT Harrisburg
8h 45m1 stop Philadelphia
$361American Airlines
Fri, Sep 11 - Wed, Sep 16
American Airlines Logo
4:15 pm - 10:56 pmMDT  Harrisburg-SEA Seattle/Tacoma Intl
9h 41m1 stop Philadelphia
American Airlines Logo
9:58 pm - 10:36 amSEA  Seattle/Tacoma Intl-MDT Harrisburg
9h 38m1 stop Philadelphia
$361American Airlines
Sat, Sep 5 - Tue, Sep 8
American Airlines Logo
6:54 pm - 12:11 amMDT  Harrisburg-SEA Seattle/Tacoma Intl
8h 17m1 stop Chicago O'Hare Intl
American Airlines Logo
6:18 am - 6:13 pmSEA  Seattle/Tacoma Intl-MDT Harrisburg
8h 55m1 stop Chicago O'Hare Intl
$361American Airlines
Wed, Sep 16 - Tue, Sep 22
United Airlines Logo
5:54 pm - 10:43 pmMDT  Harrisburg-SEA Seattle/Tacoma Intl
7h 49m1 stop Chicago O'Hare Intl
United Airlines Logo
11:00 pm - 1:39 pmSEA  Seattle/Tacoma Intl-MDT Harrisburg
11h 39m2 stops Chicago O'Hare Intl Washington, D.C. Dulles Intl
$366United Airlines
Sat, Sep 5 - Wed, Sep 9
Delta Logo
6:07 am - 10:40 amMDT  Harrisburg-SEA Seattle/Tacoma Intl
7h 33m1 stop Detroit Metropolitan Wayne County
Delta Logo
11:15 pm - 11:28 amSEA  Seattle/Tacoma Intl-MDT Harrisburg
9h 13m1 stop Detroit Metropolitan Wayne County
$370Delta
Tue, Nov 3 - Mon, Nov 9
Delta Logo
6:21 pm - 11:52 pmMDT  Harrisburg-SEA Seattle/Tacoma Intl
8h 31m1 stop Atlanta Hartsfield-Jackson
Delta Logo
11:10 pm - 11:31 amSEA  Seattle/Tacoma Intl-MDT Harrisburg
9h 21m1 stop Detroit Metropolitan Wayne County
$370Delta
Fri, Oct 9 - Tue, Oct 13
Alaska Airlines Logo
2:35 pm - 9:51 pmMDT  Harrisburg-SEA Seattle/Tacoma Intl
10h 16m1 stop Philadelphia
Alaska Airlines Logo
8:46 am - 10:08 pmSEA  Seattle/Tacoma Intl-MDT Harrisburg
10h 22m1 stop Chicago O'Hare Intl
$718Alaska Airlines
Fri, Sep 18 - Sat, Sep 26
Alaska Airlines Logo
1:25 pm - 6:16 pmMDT  Harrisburg-SEA Seattle/Tacoma Intl
7h 51m1 stop Chicago O'Hare Intl
Alaska Airlines Logo
2:18 pm - 6:13 pmSEA  Seattle/Tacoma Intl-MDT Harrisburg
24h 55m2 stops San Diego Chicago O'Hare Intl
$723Alaska Airlines
Thu, Sep 3 - Tue, Sep 8

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United Airlines flights from Harrisburg to Seattle

Our best United Airlines deals on Harrisburg to Seattle flight tickets
United Airlines
Sep 5
MDT5:54 pmHarrisburg
7h 49m
1 stop
SEA10:43 pmSeattle/Tacoma Intl
Sep 9
SEA11:00 pmSeattle/Tacoma Intl
11h 39m
2 stops
MDT1:39 pmHarrisburg
$366
United Airlines
Aug 27
MDT5:54 pmHarrisburg
7h 49m
1 stop
SEA10:43 pmSeattle/Tacoma Intl
Sep 5
SEA9:05 amSeattle/Tacoma Intl
11h 25m
2 stops
MDT11:30 pmHarrisburg
$375
United Airlines
Nov 5
MDT5:48 pmHarrisburg
8h 11m
1 stop
SEA10:59 pmSeattle/Tacoma Intl
Nov 8
SEA7:00 amSeattle/Tacoma Intl
8h 57m
1 stop
MDT6:57 pmHarrisburg
$379

American Airlines flights from Harrisburg to Seattle

Our best American Airlines deals on Harrisburg to Seattle flight tickets
American Airlines
Sep 5
MDT4:15 pmHarrisburg
9h 41m
1 stop
SEA10:56 pmSeattle/Tacoma Intl
Sep 12
SEA6:18 amSeattle/Tacoma Intl
8h 55m
1 stop
MDT6:13 pmHarrisburg
$361
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
$370
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
$380

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 August 5, 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 Harrisburg - SEA Seattle/Tacoma Intl

MDTSEA

Harrisburg

Sat 9/19

5:46 pm-10:45 pm

1 stop7h 59m

Seattle/Tacoma Intl

Wed 9/23

11:00 pm-9:51 am

1 stop7h 51m

$361
Quickest round-trip

HarrisburgSeattle

MDT Harrisburg - SEA Seattle/Tacoma Intl

MDTSEA

Harrisburg

Wed 11/4

2:00 pm-7:03 pm

1 stop8h 03m

Seattle/Tacoma Intl

Wed 11/11

8:09 am-6:36 pm

1 stop7h 27m

$361

HarrisburgSeattle

MDT Harrisburg - SEA Seattle/Tacoma Intl

MDTSEA

Harrisburg

Fri 9/11

2:35 pm-9:05 pm

1 stop9h 30m

Seattle/Tacoma Intl

Wed 9/16

10:45 pm-10:30 am

1 stop8h 45m

$361

HarrisburgSeattle

MDT Harrisburg - SEA Seattle/Tacoma Intl

MDTSEA

Harrisburg

Sat 9/5

4:15 pm-10:56 pm

1 stop9h 41m

Seattle/Tacoma Intl

Tue 9/8

9:58 pm-10:36 am

1 stop9h 38m

$361

HarrisburgSeattle

MDT Harrisburg - SEA Seattle/Tacoma Intl

MDTSEA

Harrisburg

Wed 9/16

6:54 pm-12:11 am

1 stop8h 17m

Seattle/Tacoma Intl

Tue 9/22

6:18 am-6:13 pm

1 stop8h 55m

$361

HarrisburgSeattle

MDT Harrisburg - SEA Seattle/Tacoma Intl

MDTSEA

Harrisburg

Sat 9/5

5:54 pm-10:43 pm

1 stop7h 49m

Seattle/Tacoma Intl

Wed 9/9

11:00 pm-1:39 pm

2 stops11h 39m

$366

HarrisburgSeattle

MDT Harrisburg - SEA Seattle/Tacoma Intl

MDTSEA

Harrisburg

Tue 11/3

6:07 am-10:40 am

1 stop7h 33m

Seattle/Tacoma Intl

Mon 11/9

11:15 pm-11:28 am

1 stop9h 13m

$370

HarrisburgSeattle

MDT Harrisburg - SEA Seattle/Tacoma Intl

MDTSEA

Harrisburg

Fri 10/9

6:21 pm-11:52 pm

1 stop8h 31m

Seattle/Tacoma Intl

Tue 10/13

11:10 pm-11:31 am

1 stop9h 21m

$370

HarrisburgSeattle

MDT Harrisburg - SEA Seattle/Tacoma Intl

MDTSEA

Harrisburg

Fri 9/18

2:35 pm-9:51 pm

1 stop10h 16m

Seattle/Tacoma Intl

Sat 9/26

8:46 am-10:08 pm

1 stop10h 22m

$718

HarrisburgSeattle

MDT Harrisburg - SEA Seattle/Tacoma Intl

MDTSEA

Harrisburg

Thu 9/3

1:25 pm-6:16 pm

1 stop7h 51m

Seattle/Tacoma Intl

Tue 9/8

2:18 pm-6:13 pm

2 stops24h 55m

$723

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?

Prices are currently low for flights on this route.

Typical prices usually range from $412 to $679.
The lowest price recently found on this route was $361.

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 $447 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 57% 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 August 2026, prices for Harrisburg to Seattle flights are approximately 41% more expensive 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 $159Free CancellationRating
7.8
8,487 reviews
Search Delta flights
United AirlinesPriceFrom $258Free CancellationRating
7.4
10,060 reviews
Search United Airlines flights
American AirlinesPriceFrom $293Free CancellationRating
7.1
11,849 reviews
Search American Airlines flights
Alaska AirlinesPriceFrom $422Free CancellationRating
7.9
12,764 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
Kent
Lynnwood
Redmond
Lakewood
Puyallup
Fife
Federal Way
Tukwila
Cle Elum
Marysville
Kirkland
Centralia
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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