$261 Cheap United flights from Harrisburg to Washington (MDT to IAD)

Find The Best Day To Fly from Harrisburg to Washington

Amazing United MDT to IAD Flight Deals

The cheapest flights to Washington Dulles Intl. found within the past 7 days were $316 round trip and $261 one way. Prices and availability subject to change. Additional terms may apply.

Mon, May 19 - Tue, Jun 24
MDT
Harrisburg
IAD
Washington
$316 Roundtrip, found 3 days ago
$316
Roundtrip
found 3 days ago
Select United flight, departing Mon, May 19 from Harrisburg to Washington, returning Tue, Jun 24, priced at $316 found 3 days ago
Mon, May 19 - Tue, Jun 24
MDT
Harrisburg
IAD
Washington
$319 Roundtrip, found 3 days ago
$319
Roundtrip
found 3 days ago
Select United flight, departing Mon, May 19 from Harrisburg to Washington, returning Tue, Jun 24, priced at $319 found 3 days ago
Tue, May 6 - Tue, May 13
MDT
Harrisburg
IAD
Washington
$321 Roundtrip, found 3 days ago
$321
Roundtrip
found 3 days ago
Select United flight, departing Tue, May 6 from Harrisburg to Washington, returning Tue, May 13, priced at $321 found 3 days ago
Tue, May 6 - Sat, May 10
MDT
Harrisburg
IAD
Washington
$326 Roundtrip, found 3 days ago
$326
Roundtrip
found 3 days ago
Select United flight, departing Tue, May 6 from Harrisburg to Washington, returning Sat, May 10, priced at $326 found 3 days ago
Mon, May 19 - Tue, Jun 24
MDT
Harrisburg
IAD
Washington
$377 Roundtrip, found 3 days ago
$377
Roundtrip
found 3 days ago
Select United flight, departing Mon, May 19 from Harrisburg to Washington, returning Tue, Jun 24, priced at $377 found 3 days ago
Mon, May 19 - Tue, Jun 24
MDT
Harrisburg
IAD
Washington
$381 Roundtrip, found 3 days ago
$381
Roundtrip
found 3 days ago
Select United flight, departing Mon, May 19 from Harrisburg to Washington, returning Tue, Jun 24, priced at $381 found 3 days ago

Frequently asked questions

Can I catch a flight from Harrisburg Intl. Airport (MDT) to Dulles Intl. Airport right now?
For any current Dulles Intl. Airport travel advice and quarantine requirements, go to the Covid-19 Travel Advisor. Look before you book your flight, so you don’t get caught out.
What terminal is United Airlines at Harrisburg Intl. Airport (MDT)?
If you’re traveling with United Airlines from Harrisburg Intl. Airport to IAD, you might be able to find out the terminal information when you receive your ticket. If not, consult your airline.
Are there United Airlines non-stop flights from MDT to IAD?
Prepare to make a stopover when jetting from MDT to Washington Dulles Intl. Airport (IAD), as United Airlines doesn’t operate nonstop flights between these two locations. While in transit, you might like to purchase the local newspaper or your favorite magazine from the airport bookstore to make the time go faster.
How long is a United Airlines flight from MDT to IAD?
Take in a movie or two, listen to a podcast or just put your seat back and forget all your worries. Whatever interests you, find a way to entertain yourself during the 4 hours and 12 minutes that it takes to go from Harrisburg Intl. Airport to Washington Dulles Intl. Airport (IAD) with United Airlines.
How many direct and indirect flights does United Airlines fly from MDT to IAD?
If you want to book a trip from MDT to IAD, you can select from at least 3 United Airlines flights each day.
If I am not able to travel due to COVID-19, can I change my booking to a later date?
For more info about changing your flight to IAD, please visit our Customer Service Portal.
What is the best day to buy a plane ticket?
This just in! Airfares offered on Thursdays tend to be the cheapest, according to flight demand on Travelocity in 2021. Tuesday and Wednesday prices are also good, but you may want to prepare your budget if booking during the weekend, as data shows that is when prices are generally at their highest.
What are the cheapest days to fly?
Frequent travelers may already know this, but earlier in the week can be the cheapest time to fly. In 2021, flights departing on a Monday were generally the cheapest of the week, whereas you may pay a premium for weekend flights when demand is usually high. On average, tickets were most expensive for Saturday departures, so if you need to fly out on a weekend, you might look for deals ahead of time.
How far in advance can you book a flight?
Trying to figure out how early you should book your flight? It’s possible to start comparing international airfares on Travelocity up to 12 months in advance. However, it does depend on the carrier as not all airlines release their prices that far out. According to our 2021 flight demand trends, last minute planners can still bag a bargain with some of the cheapest fares appearing 0-2 weeks prior to their travel dates.*According to flight demand on Travelocity.com from January to December 2021. Savings are subject to change based on departure location, date and destination.

Discover our best United flight from Harrisburg MDT to Washington IAD 

To find the best deals on flights to Harrisburg from Washington with United, just enter your travel dates, filter by United, and hit search. You’ll find flights to choose from and can sort by price, flight duration, and arrival or departure time.  

 

Return flights from Harrisburg MDT to Washington IAD with United 

If you’re planning a round trip, booking return flights with United is usually the most cost-effective option. With airfares ranging from $316 to $381, it’s easy to find a flight that suits your budget. Prices and availability subject to change. Additional terms may apply. 

 

Book one-way United flights from Harrisburg MDT to Washington IAD 

A one-way ticket gives you much greater flexibility—allowing you to choose your return date, destination, and time whenever you’re ready. By booking in advance you can find great deals on one-way tickets too. Right now, a one-way United flight from Harrisburg to Washington costs from $261. Prices and availability subject to change. Additional terms may apply. 

 

The easy way to find cheap flights to Washington IAD from  Harrisburg MDT with United 

To find a cheap United flight from Harrisburg MDT to Washington IAD, sort your search results by price or filter by budget. Thanks to Travelocity’s Price Match Promise, if you find a better airfare deal anywhere else within 24 hours, we’ll credit or refund the difference. 

 

How to find our best airfare deals on United flights from Harrisburg MDT to Washington IAD 

If you’re looking for cheap flights, it helps to be flexible when it comes to your travel dates. You’ll usually find lower cost tickets when you travel during quieter months such as May, or if you book a flight with a stopover. 

 

Find nonstop flights from Harrisburg MDT to Washington IAD with United 

If you’re keen to be on Washington soil fast, don’t waste time with a stopover—filter your search results to show direct United flights only. The journey takes around hour(s) min(s) – so you’ll be there before you know it. 

 

Flexible airline tickets for United flights from Harrisburg MDT to Washington IAD 

Make sure you’re not out of pocket if plans change by choosing a flexible ticket with penalty-free amendment and cancellation options. Use our ‘no change fee’ filter to see which flights have this option.  

 

There are a lot of reasons to book your flights to Washington IAD from  Harrisburg MDT with United on Travelocity 

At Travelocity our vast and up-to-the-minute inventory puts all of our best flight deals in one place. So, whether you’re traveling on business or jetting off with friends and family, you can trust Travelocity to get you there.

United Airports
Hop on a(n) United flight today by flying to many destinations out of these domestic and international airports:
Airport code
Country
Airport name
Number of flights
ORDUSAO'Hare Intl.227
DENUSADenver Intl.226
IAHUSAGeorge Bush Intercontinental136
IADUSAWashington Dulles Intl.100
SFOUSASan Francisco Intl.64
LAXUSALos Angeles Intl.23
EWRUSALiberty Intl.20
FRADEUFrankfurt Intl.19
NRTJPNNarita Intl.19
PEKCHNCapital Intl.16

Travelers ❤️ these 🏨 after their flight to Washington

Hyatt Place Herndon Dulles Airport East
Hyatt Place Herndon Dulles Airport East
3 out of 5
13711 Sayward Blvd, Herndon, VA
This hotel features a restaurant, an indoor pool, and a bar/lounge. Traveling on business? Take advantage of the free WiFi in public areas, express check-out, ...
8.4/10 Very Good! (2,102 reviews)
"Super close to the airport, yet surprisingly quiet. The desk staff were wonderful."

Reviewed on May 3, 2025

Hyatt Place Herndon Dulles Airport East
Hyatt Regency Dulles
Hyatt Regency Dulles
4 out of 5
2300 Dulles Corner Blvd, Herndon, VA
This hotel features an indoor pool, A 24-hour gym, and a restaurant. Traveling on business? Take advantage of the 24-hour business center, free WiFi in public ...
8.8/10 Excellent! (1,255 reviews)
Hand for overnight
"Handy hotel for airport with shuttle nothing around hotel , disappointed could not get a bagel in the morning did not want the full sit down breakfast"

Reviewed on Apr 30, 2025

Hyatt Regency Dulles
Washington Dulles Airport Marriott
Washington Dulles Airport Marriott
4 out of 5
45020 Aviation Dr, Sterling, VA
This smoke-free hotel includes 2 restaurants, an indoor pool, and a 24-hour gym. Traveling on business? Take advantage of the business center, free WiFi in public ...
8.2/10 Very Good! (1,001 reviews)
"👍"

Reviewed on Apr 28, 2025

Washington Dulles Airport Marriott
Lowest nightly price found within the past 24 hours based on a 1 night stay for 2 adults. Prices and availability subject to change. Additional terms may apply.
*Price based on the lowest price found within past 24 hours and based upon one night stay for two adults over the next thirty days. Prices and availability subject to change. Additional terms may apply.