What is the cheapest airline that flies from Harrisburg to Seattle/Tacoma Intl?

American Airlines, United Airlines, and Delta are the most popular carriers operating from Harrisburg to Seattle/Tacoma Intl

What airlines fly to Seattle?

Alaska Airlines, American Airlines and United Airlines are the top three most popular airlines that fly to Seattle from Harrisburg according to our data. Alaska Airlines is the first choice among our users, with 54% of people opting to fly with this airline when traveling to Seattle. Keep in mind that there are 9 different airlines that fly to Seattle on a routine basis, so you have a few additional options to choose from.

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?

The number of operators available for flights from Harrisburg Airport to Seattle/Tacoma Intl Airport is 4 as of January 2026.

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.

$130 Cheap Flights from Harrisburg to Seattle in 2026

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Find the cheapest flights from Harrisburg to Seattle

Round-trip

One-way

Last minute

Cheap round-trip flights

Enter your travel dates to find the best prices.

2:07 pm - 7:03 pm

MDT

SEA

7h 56m

1 stop

10:55 am - 8:56 pm

SEA

MDT

7h 01m

1 stop

$259United Airlines

Sat, Feb 28 - Wed, Mar 4

6:29 am - 11:49 am

MDT

SEA

8h 20m

1 stop

7:10 pm - 9:37 am

SEA

MDT

11h 27m

2 stops

$264United Airlines

Sun, Feb 15 - Wed, Feb 18

6:31 pm - 12:24 am

MDT

SEA

8h 53m

1 stop

7:15 am - 5:50 pm

SEA

MDT

7h 35m

1 stop

$294American Airlines

Mon, Feb 16 - Mon, Feb 23

5:40 pm - 10:45 pm

MDT

SEA

8h 05m

1 stop

11:59 pm - 1:51 pm

SEA

MDT

10h 52m

2 stops

$298United Airlines

Fri, Mar 13 - Mon, Mar 16

5:40 pm - 10:45 pm

MDT

SEA

8h 05m

1 stop

11:59 pm - 10:00 am

SEA

MDT

7h 01m

1 stop

$302United Airlines

Fri, Mar 13 - Mon, Mar 16

8:00 pm - 12:45 am

MDT

SEA

7h 45m

1 stop

11:20 pm - 9:24 am

SEA

MDT

7h 04m

1 stop

$303United Airlines

Mon, Jul 13 - Wed, Jul 22

6:31 pm - 11:04 pm

MDT

SEA

7h 33m

1 stop

12:07 am - 12:19 pm

SEA

MDT

9h 12m

1 stop

$309American Airlines

Fri, Feb 13 - Sat, Feb 14

12:51 pm - 9:17 pm

MDT

SEA

11h 26m

2 stops

10:57 pm - 9:26 am

SEA

MDT

7h 29m

1 stop

$313American Airlines

Wed, Mar 4 - Mon, Mar 9

5:06 pm - 12:55 am

MDT

SEA

10h 49m

2 stops

10:57 pm - 9:26 am

SEA

MDT

7h 29m

1 stop

$314American Airlines

Thu, Feb 19 - Mon, Feb 23

2:33 pm - 8:56 pm

MDT

SEA

9h 23m

1 stop

11:59 pm - 10:00 am

SEA

MDT

7h 01m

1 stop

$318United Airlines

Thu, Mar 19 - Mon, Mar 23

United Airlines flights from Harrisburg to Seattle

Our best United Airlines deals on Harrisburg to Seattle flight tickets

United Airlines

Feb 15

MDT5:40 pmHarrisburg

8h 03m

1 stop

SEA10:43 pmSeattle/Tacoma Intl

Feb 18

SEA10:55 amSeattle/Tacoma Intl

7h 01m

1 stop

MDT8:56 pmHarrisburg

$259

United Airlines

Feb 15

MDT6:29 amHarrisburg

8h 20m

1 stop

SEA11:49 amSeattle/Tacoma Intl

Feb 18

SEA7:10 pmSeattle/Tacoma Intl

11h 27m

2 stops

MDT9:37 amHarrisburg

$264

United Airlines

Mar 12

MDT6:15 amHarrisburg

8h 34m

1 stop

SEA11:49 amSeattle/Tacoma Intl

Mar 17

SEA5:00 amSeattle/Tacoma Intl

13h 05m

2 stops

MDT9:05 pmHarrisburg

$292

American Airlines flights from Harrisburg to Seattle

Our best American Airlines deals on Harrisburg to Seattle flight tickets

American Airlines

Feb 18

MDT6:31 pmHarrisburg

8h 53m

1 stop

SEA12:24 amSeattle/Tacoma Intl

Feb 25

SEA7:15 amSeattle/Tacoma Intl

7h 35m

1 stop

MDT5:50 pmHarrisburg

$260

American Airlines

Mar 4

MDT12:51 pmHarrisburg

11h 26m

2 stops

SEA9:17 pmSeattle/Tacoma Intl

Mar 9

SEA10:57 pmSeattle/Tacoma Intl

9h 35m

1 stop

MDT11:32 amHarrisburg

$283

American Airlines

Apr 3

MDT6:00 amHarrisburg

9h 47m

1 stop

SEA12:47 pmSeattle/Tacoma Intl

Apr 4

SEA12:07 amSeattle/Tacoma Intl

9h 12m

1 stop

MDT12:19 pmHarrisburg

$294

Fly from

Fly to

Route

Depart

Return

Price

HarrisburgSeattle

MDT - SEA

MDTSEA

Harrisburg

Sat 2/28

2:07 pm-7:03 pm

1 stop7h 56m

Seattle/Tacoma Intl

Wed 3/4

10:55 am-8:56 pm

1 stop7h 01m

$259

HarrisburgSeattle

MDT - SEA

MDTSEA

Harrisburg

Sun 2/15

6:29 am-11:49 am

1 stop8h 20m

Seattle/Tacoma Intl

Wed 2/18

7:10 pm-9:37 am

2 stops11h 27m

$264

HarrisburgSeattle

MDT - SEA

MDTSEA

Harrisburg

Mon 2/16

6:31 pm-12:24 am

1 stop8h 53m

Seattle/Tacoma Intl

Mon 2/23

7:15 am-5:50 pm

1 stop7h 35m

$294

HarrisburgSeattle

MDT - SEA

MDTSEA

Harrisburg

Fri 3/13

5:40 pm-10:45 pm

1 stop8h 05m

Seattle/Tacoma Intl

Mon 3/16

11:59 pm-1:51 pm

2 stops10h 52m

$298

HarrisburgSeattle

MDT - SEA

MDTSEA

Harrisburg

Fri 3/13

5:40 pm-10:45 pm

1 stop8h 05m

Seattle/Tacoma Intl

Mon 3/16

11:59 pm-10:00 am

1 stop7h 01m

$302

HarrisburgSeattle

MDT - SEA

MDTSEA

Harrisburg

Mon 7/13

8:00 pm-12:45 am

1 stop7h 45m

Seattle/Tacoma Intl

Wed 7/22

11:20 pm-9:24 am

1 stop7h 04m

$303

HarrisburgSeattle

MDT - SEA

MDTSEA

Harrisburg

Fri 2/13

6:31 pm-11:04 pm

1 stop7h 33m

Seattle/Tacoma Intl

Sat 2/14

12:07 am-12:19 pm

1 stop9h 12m

$309

HarrisburgSeattle

MDT - SEA

MDTSEA

Harrisburg

Wed 3/4

12:51 pm-9:17 pm

2 stops11h 26m

Seattle/Tacoma Intl

Mon 3/9

10:57 pm-9:26 am

1 stop7h 29m

$313

HarrisburgSeattle

MDT - SEA

MDTSEA

Harrisburg

Thu 2/19

5:06 pm-12:55 am

2 stops10h 49m

Seattle/Tacoma Intl

Mon 2/23

10:57 pm-9:26 am

1 stop7h 29m

$314

HarrisburgSeattle

MDT - SEA

MDTSEA

Harrisburg

Thu 3/19

2:33 pm-8:56 pm

1 stop9h 23m

Seattle/Tacoma Intl

Mon 3/23

11:59 pm-10:00 am

1 stop7h 01m

$318

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first

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

Prices

Airlines

What is the cheapest month to fly to Seattle?

In general, March 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 $365. If you don’t want to visit Seattle in March, then you should wait until February to fly from Harrisburg, when ticket prices are also cheap, with an average price of $381.

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 $465 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 $345 on momondo.

Can stopping save me money on Harrisburg to Seattle flights?

You could potentially save up to 20% 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 January 2026, prices for Harrisburg to Seattle flights are approximately 62% 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 45m
Direct flights	None

The fastest flight from Harrisburg to Seattle takes 7h 45m

There are no direct flights from Harrisburg to Seattle. There are no popular flight routes from Harrisburg to Seattle.

Search flight deals

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 45m.
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?
The number of operators available for flights from Harrisburg Airport to Seattle/Tacoma Intl Airport is 4 as of January 2026.
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?
Based on momondo bookings for this flight route, the most popular airline on flight routes from Harrisburg to Seattle is American Airlines (51% of total bookings). The next most popular airlines are United Airlines (35%), Delta (8%), and Alaska Airlines (7%).

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
United Airlines	PriceFrom $286	Free Cancellation	Rating 7.4 9,191 reviews	Search United Airlines flights
American Airlines	PriceFrom $286	Free Cancellation	Rating 7.2 11,174 reviews	Search American Airlines flights
Delta	PriceFrom $286	Free Cancellation	Rating 7.9 8,088 reviews	Search Delta flights
Alaska Airlines	PriceFrom $427	Free Cancellation	Rating 8.0 11,775 reviews	Search Alaska Airlines flights

Tacoma

Leavenworth

SeaTac

Ocean Shores

Renton

Olympia

Lynnwood

Kent

Marysville

Redmond

Puyallup

Cle Elum

Tukwila

Lakewood

Federal Way

Centralia

Westport

Kirkland

Fife

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.