Washington

$304+ Cheap flights from Harrisburg (MDT) to Washington

MDT — SEA
Dec 12 — Dec 191
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Cheap flight deals from Harrisburg to Washington

Cheapest flights from Harrisburg to Washington

Tue 12/158:19 am -
1 stop10h 59m
Tue 1/128:08 am -
1 stop7h 36m
Deal found 11/10$411
Fri 12/117:02 am -
1 stop10h 34m
Tue 12/1510:53 am -
1 stop8h 35m
Deal found 11/9$415
Wed 12/23:06 pm -
1 stop10h 32m
Sun 12/610:51 am -
1 stop8h 37m
Deal found 11/10$419
Sun 12/136:00 am -
1 stop9h 06m
Fri 1/151:15 pm -
1 stop7h 19m
Deal found 11/9$419
Wed 12/1610:40 am -
1 stop8h 38m
Thu 12/247:25 pm -
2 stops11h 25m
Deal found 11/8$424
Wed 12/27:02 am -
1 stop10h 34m
Tue 12/159:45 pm -
1 stop9h 33m
Deal found 11/10$425
Sun 12/66:08 am -
1 stop9h 11m
Sun 12/139:45 pm -
1 stop9h 33m
Deal found 11/12$429
Tue 12/152:50 pm -
2 stops10h 53m
Fri 1/157:00 am -
1 stop9h 11m
Deal found 11/9$431
Sat 12/126:00 am -
1 stop8h 10m
Wed 12/166:00 am -
1 stop7h 16m
Deal found 11/8$441
Mon 12/146:00 am -
1 stop9h 06m
Fri 1/151:15 pm -
1 stop7h 19m
Deal found 11/8$459
Wed 12/28:19 am -
1 stop10h 59m
Tue 12/158:30 am -
2 stops9h 24m
Deal found 11/10$462
Sat 12/126:00 am -
1 stop9h 06m
Fri 1/151:15 pm -
1 stop7h 19m
Deal found 11/8$509

Find flight deals from Harrisburg to Washington

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$411
(United Airlines)

One-way from

$304
(American Airlines)

Popular in

June

Cheapest in

February

Average price

$393
Provider with most accurate pricing for Harrisburg-Seattle/Tacoma Intl flight deals.
Provider most trusted by Cheapflights users for Harrisburg-Seattle/Tacoma Intl flights.
From Harrisburg to Washington
One-way flight from Harrisburg to Washington
Highest demand for flights based on searches. 16% potential increase in price ($91 potential increase over avg. RT price).
Cheapest flight prices on average. 4% potential price decrease ($20 potential savings vs. average RT price).
Average for round-trip flights in November 2026

Cheapflights Fare Finder

 
Use the filters below to find and compare flights from Harrisburg to Washington that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip
Quickest round-trip

HarrisburgSeattle

MDT Harrisburg - SEA Seattle/Tacoma Intl

MDTSEA

Harrisburg

Wed 12/2

6:00 am-11:39 am

1 stop8h 39m

Seattle/Tacoma Intl

Wed 12/31

12:00 am-3:00 am

Nonstop0h 00m

$304

HarrisburgSeattle

MDT Harrisburg - SEA Seattle/Tacoma Intl

MDTSEA

Harrisburg

Tue 12/15

8:19 am-4:18 pm

1 stop10h 59m

Seattle/Tacoma Intl

Tue 1/12

8:08 am-6:44 pm

1 stop7h 36m

$411

HarrisburgSeattle

MDT Harrisburg - SEA Seattle/Tacoma Intl

MDTSEA

Harrisburg

Mon 11/23

10:13 am-6:39 pm

1 stop11h 26m

Seattle/Tacoma Intl

Wed 12/31

12:00 am-3:00 am

Nonstop0h 00m

$414

HarrisburgSeattle

MDT Harrisburg - SEA Seattle/Tacoma Intl

MDTSEA

Harrisburg

Wed 1/6

2:05 pm-7:38 pm

1 stop8h 33m

Seattle/Tacoma Intl

Mon 1/11

10:52 am-8:49 pm

1 stop6h 57m

$415

HarrisburgSpokane

MDT Harrisburg - GEG Spokane

MDTGEG

Harrisburg

Sun 12/13

6:00 am-12:06 pm

1 stop9h 06m

Spokane

Fri 1/15

1:15 pm-11:34 pm

1 stop7h 19m

$419

HarrisburgSpokane

MDT Harrisburg - GEG Spokane

MDTGEG

Harrisburg

Sat 12/12

12:24 pm-9:10 pm

2 stops11h 46m

Spokane

Fri 1/15

1:15 pm-11:34 pm

1 stop7h 19m

$424

HarrisburgSpokane

MDT Harrisburg - GEG Spokane

MDTGEG

Harrisburg

Mon 12/14

6:00 am-4:07 pm

2 stops13h 07m

Spokane

Fri 1/15

1:15 pm-11:34 pm

1 stop7h 19m

$424

HarrisburgSeattle

MDT Harrisburg - SEA Seattle/Tacoma Intl

MDTSEA

Harrisburg

Wed 12/2

8:19 am-11:44 pm

3 stops18h 25m

Seattle/Tacoma Intl

Wed 12/31

12:00 am-3:00 am

Nonstop0h 00m

$425

HarrisburgSpokane

MDT Harrisburg - GEG Spokane

MDTGEG

Harrisburg

Sun 12/13

6:00 am-2:46 pm

2 stops11h 46m

Spokane

Thu 1/14

9:53 am-11:10 pm

2 stops10h 17m

$429

HarrisburgSeattle

MDT Harrisburg - SEA Seattle/Tacoma Intl

MDTSEA

Harrisburg

Tue 12/15

2:50 pm-10:43 pm

2 stops10h 53m

Seattle/Tacoma Intl

Fri 1/15

7:00 am-7:11 pm

1 stop9h 11m

$431

Flights are sorted by cheapest round-trip flights first.

Deals found on 11/8

Showing 1-10 of 20 resultsSorted by cheapest first
1
2

Best time to book a flight from Harrisburg to Washington

Have a flexible travel schedule? Discover the best time to fly to Washington from Harrisburg with our price prediction graph.
Estimated round-trip price

Cheapflights Insights

Everything you need to know about your flight from Harrisburg to Washington

What is the cheapest month to book a flight from Harrisburg to State of Washington?

Currently, January is the cheapest month in which you can book a flight from Harrisburg to State of Washington (average of $335). Flying from Harrisburg to State of Washington in June is currently the most expensive (average of $680). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

How much does it cost to fly round-trip from Harrisburg to State of Washington?

Airfare is typical for this route at the moment.
Harrisburg to State of Washington flights typically cost between $359 and $474 in December.
The cheapest round-trip price found within the last 5 days was $411 on United Airlines (Dec 15-Jan 12).

How far ahead should I book a flight from Harrisburg to State of Washington?

Booking 89 days in advance of your planned departure date is, on average, the best time to get cheap flights from Harrisburg to State of Washington. The general trend is that the closer you book to the departure date, the more expensive your flight will be.

Reviews of airlines servicing Washington

Read through reviews of airlines operating flights from Harrisburg to Washington, such as Alaska Airlines,Delta, andUnited Airlines. You can also see how each airline stacks up in terms of entertainment options, comfort, food, crew/service, and boarding process.

Food

7.0

Boarding

8.1

Overall

7.9

Comfort

7.8

Crew

8.5

Entertainment

7.0

Reviews

1 / 20
8.0
Excellent

Anonymous,Jun 2026

RDU - SEA

There was almost a 2 hour delay after arriving before our next flight. Also my husband needed a wheelchair and it seemed hard to get help.

Food

7.0

Boarding

8.1

Overall

7.9

Comfort

7.8

Crew

8.5

Entertainment

7.0

Reviews

1 / 20
8.0
Excellent

Anonymous,Jun 2026

RDU - SEA

There was almost a 2 hour delay after arriving before our next flight. Also my husband needed a wheelchair and it seemed hard to get help.

Food

7.0

Boarding

8.1

Overall

7.9

Comfort

7.8

Crew

8.5

Entertainment

7.0

Reviews

1 / 20
8.0
Excellent

Anonymous,Jun 2026

RDU - SEA

There was almost a 2 hour delay after arriving before our next flight. Also my husband needed a wheelchair and it seemed hard to get help.

Food

7.0

Boarding

8.1

Overall

7.9

Comfort

7.8

Crew

8.5

Entertainment

7.0

Reviews

1 / 20
8.0
Excellent

Anonymous,Jun 2026

RDU - SEA

There was almost a 2 hour delay after arriving before our next flight. Also my husband needed a wheelchair and it seemed hard to get help.

Food

7.0

Boarding

8.1

Overall

7.9

Comfort

7.8

Crew

8.5

Entertainment

7.0

Reviews

1 / 20
8.0
Excellent

Anonymous,Jun 2026

RDU - SEA

There was almost a 2 hour delay after arriving before our next flight. Also my husband needed a wheelchair and it seemed hard to get help.

Related info for your journey

  • What airport do you fly from for flights from Harrisburg to Washington?

    Harrisburg (MDT), located 8.5 mi from the city center, is the airport you fly out of when you book flights from Harrisburg to Washington.

  • How long is the flight from Harrisburg to State of Washington?

    There are many flights that can get you from Harrisburg to State of Washington in 9h 06m. Fly via United Airlines or Delta to get the fastest option. Harrisburg and State of Washington are separated by a distance of 2066 mi. This flight may include one or multiple stops.

  • What are the cheapest airlines to fly from Harrisburg to State of Washington one-way?

    The cheapest airlines for a one-way flight from Harrisburg to State of Washington are American Airlines ($129), Delta ($158), and United Airlines ($170).

  • What are the most popular routes from Harrisburg to State of Washington?

  • Can I find deals for flights from Harrisburg to Washington that include hotel bookings?

    Yes. In addition to deals on Harrisburg to Washington flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from Harrisburg to Washington?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Harrisburg to Washington.

  • Can I find deals for business class flights from Harrisburg to Washington?

    Yes. Cheapflights offers flight deals from Harrisburg to Washington by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

  • What is the cheapest month to book a flight from Harrisburg to State of Washington?

    Currently, January is the cheapest month in which you can book a flight from Harrisburg to State of Washington (average of $335). Flying from Harrisburg to State of Washington in June is currently the most expensive (average of $680). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

See more FAQs

Browse thousands of different options on Cheapflights for your next trip

Alternative routes for Harrisburg to Washington

Top 4 airlines flying from Harrisburg to Washington

AirlineCheapestAverageFlexibilityOn-time
DeltaCheapest$159Average$520FlexibilityNo cancel feeOn-timeN/A
United AirlinesCheapest$258Average$473FlexibilityNo cancel feeOn-time69%
American AirlinesCheapest$298Average$550FlexibilityNo cancel feeOn-time71%
Alaska AirlinesCheapest$533Average$744FlexibilityNo cancel feeOn-time75%

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