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Dulles Intl

$140+ Cheap flights from Harrisburg (MDT) to Dulles Intl (IAD)

This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 9/19. Fares are subject to change and may not be available on all flights or dates of travel.
MDT — IAD
Jun 17 — Jun 241
Tue 6/17
Tue 6/24
1 adult, Economy
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Cheap flight deals from Harrisburg to Dulles Intl

Discover tips and strategies to find the most affordable flight options for your journey from Harrisburg (MDT) to Dulles Intl (IAD). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated June 12, 2025.

Round-trip from

$179
(United Airlines)

One-way from

$145
(American Airlines)

Popular in

April

Cheapest in

December

Average price

$354
From Harrisburg to Washington, D.C. Dulles Intl
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One-way flight from Harrisburg to Washington, D.C. Dulles Intl
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Highest demand for flights based on searches. 22% potential increase in price ($87 potential increase over avg. RT price).
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Cheapest flight prices on average. 4% potential price decrease ($13 potential savings vs. average RT price).
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Average for round-trip flights in June 2025
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Find flight deals from Harrisburg to Dulles Intl

Cheapest flights from Harrisburg to Dulles Intl
Explore the most affordable flight options available from Harrisburg to Dulles Intl. Find the lowest fares from popular airlines and budget airlines, with prices last updated on June 12, 2025.

This United Airlines deal was found by Cheapflights users on 6/10. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 8/2810:35 amMDT - IAD
Nonstop1h 00mUnited Airlines
Sun 9/78:35 amIAD - MDT
Nonstop0h 58mUnited Airlines
Deal found 6/10$179
This American Airlines deal was found by Cheapflights users on 6/12. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 7/196:33 amMDT - IAD
1 stop4h 04mAmerican Airlines
Mon 7/285:39 pmIAD - MDT
1 stop5h 53mAmerican Airlines
Deal found 6/12$234
This Mytrip deal was found by Cheapflights users on 6/10. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 8/2811:05 amMDT - IAD
1 stop7h 15mMultiple Airlines
Sun 9/712:55 pmIAD - MDT
3 stops29h 19mMultiple Airlines
Deal found 6/10$328

Cheapflights Fare Finder

Customize your flight search to find flights from Harrisburg to Dulles Intl 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, Cheapflights users made 2,558,603 searches. Data last updated June 12, 2025.
Use the filters below to find and compare flights from Harrisburg to Washington, D.C. Dulles Intl Airport that are best for you.

Fly from

Harrisburg

Fly to

Dulles Intl

Route

Depart

Return

Price

HarrisburgWashington, D.C.

MDT - IAD

MDTIAD

Harrisburg

Thu 8/28

10:35 am-11:35 am

Nonstop1h 00m

Washington, D.C. Dulles Intl

Sun 9/7

8:35 am-9:33 am

Nonstop0h 58m

$179

HarrisburgWashington, D.C.

MDT - IAD

MDTIAD

Harrisburg

Sat 7/19

6:33 am-10:37 am

1 stop4h 04m

Washington, D.C. Dulles Intl

Mon 7/28

5:39 pm-11:32 pm

1 stop5h 53m

$234

HarrisburgWashington, D.C.

MDT - IAD

MDTIAD

Harrisburg

Thu 8/28

11:05 am-6:20 pm

1 stop7h 15m

Washington, D.C. Dulles Intl

Sun 9/7

12:55 pm-6:14 pm

3 stops29h 19m

$328

HarrisburgWashington, D.C.

MDT - IAD

MDTIAD

Harrisburg

Fri 9/19

6:40 am-12:18 pm

1 stop5h 38m

$140

HarrisburgWashington, D.C.

MDT - IAD

MDTIAD

Harrisburg

Sat 7/12

10:51 am-11:08 am

2 stops24h 17m

$165

HarrisburgWashington, D.C.

MDT - IAD

MDTIAD

Harrisburg

Wed 7/2

10:35 am-11:31 am

Nonstop0h 56m

$204

HarrisburgWashington, D.C.

MDT - IAD

MDTIAD

Harrisburg

Sat 7/12

4:36 pm-11:24 am

3 stops42h 48m

$249

Flights are sorted by cheapest round-trip flights first.

Deals found on 6/12

Best time to book a flight from Harrisburg to Dulles Intl

Have a flexible travel schedule? Discover the best time to fly to Dulles Intl from Harrisburg with our price prediction graph.
Estimated round-trip price
Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.

Cheapflights Insights

Everything you need to know about your flight from Harrisburg to Washington, D.C. Dulles Intl Airport

What is the cheapest month to book a flight from Harrisburg to Washington, D.C. Dulles Intl Airport?

Currently, August is the cheapest month in which you can book a flight from Harrisburg to Washington, D.C. Dulles Intl Airport (average of $309). Flying from Harrisburg to Washington, D.C. Dulles Intl Airport in July is currently the most expensive (average of $349). 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.

What is the cheapest time of day to fly from MDT to IAD?

Find hourly flight availability from Harrisburg to Dulles Intl. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated June 12, 2025.

It’s typically best to fly out from Harrisburg to Washington, D.C. Dulles Intl Airport in the morning. Doing so could potentially save you 42% on the flight price compared to flying in the afternoon, which is usually more expensive.

What is the cheapest day to fly from Harrisburg to Washington, D.C. Dulles Intl Airport?

Use this chart to determine the cheapest time to fly round-trip from Harrisburg to Dulles Intl. Price data was last updated on June 8, 2025.

Travelers seeking maximum savings on their Harrisburg to Washington, D.C. Dulles Intl Airport flight should consider departing on Monday evenings when fares are most often at their lowest. Saturday at noon flights should be avoided if possible as fares are typically the most expensive at this time.

Weekly flight availability from Harrisburg to Washington, D.C. Dulles Intl Airport

Explore weekly flight availability from Harrisburg to Dulles Intl. Discover flights operating on different days of the week, giving you the flexibility to choose a travel day that best fits your plans. Compare info to find the most convenient option for your journey. Data last updated June 12, 2025.

The most flights from MDT to IAD are scheduled on a Tuesday (10 on average). You will have fewer flight options on Monday, which is when the least amount of flights are scheduled (7 on average).

Rainfall in Dulles Intl by month

Plan your trip to Dulles Intl by taking into account the average rainfall totals by month.

In terms of precipitation, rainfall in Washington, D.C. Dulles Intl Airport ranges from 2.6 - 4.0 inches per month. May is typically the wettest month, when rainfall can reach 4.0 in. February is typically the driest time to visit Washington, D.C. Dulles Intl Airport when rainfall is around 2.6 in.

Temperature in Dulles Intl by month

Plan your trip to Dulles Intl by taking into account the average temperature totals by month.

If weather is an important factor for your trip to Washington, D.C. Dulles Intl Airport, use this chart to help with planning. For those seeking warmer temperatures, July is the ideal time of year to visit, when temperatures reach an average of 80.6 F. Travelers looking to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 35.6 F).

Reviews of airlines servicing Dulles Intl

Get insights into the airlines that provide service to Dulles Intl. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to Dulles Intl. Reviews last updated June 12, 2025.
United Airlines
7.4
Good
8,790 reviews

Entertainment

7.0

Crew

8.1

Overall

7.4

Comfort

7.3

Boarding

7.7

Food

6.6

Reviews

1 / 20
2.0
Mediocre

Deb,Jan 2025

MKE - ORD

It was terrible! So much to say, but in a nutshell we used vouchers from United because our last trip with them was awful with many mishaps and errors made. Unfortunately, this trip was even worse!
United Airlines
7.4
Good
8,790 reviews
United Airlines
7.4
Good
8,790 reviews

Entertainment

7.0

Crew

8.1

Overall

7.4

Comfort

7.3

Boarding

7.7

Food

6.6

Reviews

1 / 20
2.0
Mediocre

Deb,Jan 2025

MKE - ORD

It was terrible! So much to say, but in a nutshell we used vouchers from United because our last trip with them was awful with many mishaps and errors made. Unfortunately, this trip was even worse!
Allegiant Air
7.3
Good
725 reviews
United Airlines
7.4
Good
8,790 reviews

Entertainment

7.0

Crew

8.1

Overall

7.4

Comfort

7.3

Boarding

7.7

Food

6.6

Reviews

1 / 20
2.0
Mediocre

Deb,Jan 2025

MKE - ORD

It was terrible! So much to say, but in a nutshell we used vouchers from United because our last trip with them was awful with many mishaps and errors made. Unfortunately, this trip was even worse!
American Airlines
7.2
Good
10,000 reviews
United Airlines
7.4
Good
8,790 reviews

Entertainment

7.0

Crew

8.1

Overall

7.4

Comfort

7.3

Boarding

7.7

Food

6.6

Reviews

1 / 20
2.0
Mediocre

Deb,Jan 2025

MKE - ORD

It was terrible! So much to say, but in a nutshell we used vouchers from United because our last trip with them was awful with many mishaps and errors made. Unfortunately, this trip was even worse!

Related info for your journey

Find useful and relevant information for your journey from Harrisburg to Dulles Intl. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • What airport do you fly from for flights from Harrisburg to Washington, D.C. Dulles Intl?

    For a flight from Harrisburg to Washington, D.C. Dulles Intl, you will be flying from Harrisburg. Harrisburg (MDT) is just 8.5 mi from the center of the city. Harrisburg is the only Harrisburg airport and it handles 8 outbound flights to Washington, D.C. Dulles Intl per day. 1 airline has flights to Washington, D.C. Dulles Intl from Harrisburg on a regular basis.

  • What are the cheapest airlines flying from Harrisburg to Washington, D.C. Dulles Intl Airport round-trip?

    United Airlines, at $179, was found to be the cheapest airline from Harrisburg to Washington, D.C. Dulles Intl Airport. An alternate airline flying to your destination would be American Airlines. United Airlines is 40% cheaper than the average price of flights available within the next 90 days to this destination.

  • What are the cheapest airlines to fly from Harrisburg to Washington, D.C. Dulles Intl Airport one-way?

    One-way options have recently been found by users for as low as $145 on American Airlines. Other airlines that offer cheap prices include Allegiant Air from $165 and United Airlines from $204 one-way.

  • What are the most reliable airlines from Harrisburg to Washington, D.C. Dulles Intl Airport?

    Consider GoJet (100%), Copa Airlines (93%) or United Airlines (93%) when booking your flight. These represent the most reliable airlines when flying from Harrisburg to Washington, D.C. Dulles Intl Airport.

  • What are the cheapest flights from Harrisburg to Washington, D.C. Dulles Intl Airport?

    While on average a flight from Harrisburg to Washington, D.C. Dulles Intl Airport is generally $2,305, our data shows the cheapest flight currently is $118. When looking at the most popular route, (Harrisburg - Washington, D.C. Dulles Intl), you can expect to pay $179 for that flight.

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

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

  • How can I find direct flights from Harrisburg to Dulles Intl?

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

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

    Yes. Cheapflights offers flight deals from Harrisburg to Dulles Intl 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 Washington, D.C. Dulles Intl Airport?

    Currently, August is the cheapest month in which you can book a flight from Harrisburg to Washington, D.C. Dulles Intl Airport (average of $309). Flying from Harrisburg to Washington, D.C. Dulles Intl Airport in July is currently the most expensive (average of $349). 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

Traveling to a place near Harrisburg?

Book flights to Harrisburg if you plan to visit one of these locations
Arlington
Alexandria
Woodbridge
Tysons
Silver Spring
Linthicum Heights
Fredericksburg
Gaithersburg
Fairfax
Falls Church
Easton
Herndon
Towson
Sterling
Bowie
Rockville
Reston
National Harbor
Springfield
Manassas

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Alternative routes for Harrisburg to Dulles Intl

See prices for flight routes from nearby airports that may be better suited for you.
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Top airline flying from Harrisburg to Dulles Intl

Discover the top airline that operate flights from Harrisburg to Dulles Intl. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated June 12, 2025.
AirlineCheapestAverageFlexibilityOn-time
United AirlinesCheapest$209Average$299FlexibilityNo cancel feeOn-time69%

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