How long is the flight from Pittsburgh to Washington, D.C. Dulles Intl Airport?

There are many flights that can get you from Pittsburgh to Washington, D.C. Dulles Intl Airport in 1h 09m. Fly via United Airlines or Delta to get the fastest option. The distance between Pittsburgh and Washington, D.C. Dulles Intl Airport is about 183 mi. When browsing for deals, the options you’ll see will be for both nonstop flights and flights with stops.

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

Cheapflights users have booked flights from Pittsburgh to Washington, D.C. Dulles Intl Airport round-trip from $123. Another airline that can offer you cheap pricing is United Airlines. Southern / Mokulele is priced at 58% lower than the current average price of a flight leaving 3 months from now.

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

The most flights from PIT to IAD are scheduled on a Monday (16 on average). You will have fewer flight options on Wednesday, which is when the least amount of flights are scheduled (15 on average).

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.

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).

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

Looking for the cheapest flight from Pittsburgh to Washington, D.C. Dulles Intl Airport? While on average our users pay $2,140, our data indicates the cheapest price to be $143. The most popular route (Pittsburgh - Washington, D.C. Dulles Intl), is priced around $117.

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

Looking for the most reliable airlines to get you to your destination on time? Our data shows these are most likely to get you from Pittsburgh to Washington, D.C. Dulles Intl Airport on time: ANA (93%), Ethiopian Air (93%), Republic Airways (86%).

Most accurate provider : When it comes to deals on Pittsburgh-Washington, D.C. Dulles Intl Airport flights, users find the pricing of FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on Pittsburgh-Washington, D.C. Dulles Intl Airport flight deals on Cheapflights vs. FlightHub >95% of the time. Price accuracy is based on data collected from Pittsburgh-Washington, D.C. Dulles Intl Airport flight searches over the past month and is updated monthly.

Most trusted provider : When it comes to deals on Pittsburgh-Washington, D.C. Dulles Intl Airport flights, Cheapflights users trust FlightHub the most. FlightHub has received a user feedback score of 3 out of 3 stars (3 being the best), meaning they have been trusted the most by Cheapflights users looking for Pittsburgh-Washington, D.C. Dulles Intl Airport flight deals. Provider user feedback score is based on Cheapflights searches over the past month and is updated monthly.

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

Pittsburgh (PIT) is the airport you will fly out of if you book a flight from Pittsburgh to Washington, D.C. Dulles Intl. You should not have trouble finding flights to Washington, D.C. Dulles Intl from Pittsburgh; the airport handles an average of 15 outbound flights to Washington, D.C. Dulles Intl per day. You should also have plenty of airline options to choose from since 2 airlines have flights from the Pittsburgh airport to Washington, D.C. Dulles Intl. It is only a 13.5 mi journey to Pittsburgh (PIT) from Pittsburgh’s city center.

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

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

How can I find direct flights from Pittsburgh to Dulles Intl?

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

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

Yes. Cheapflights offers flight deals from Pittsburgh 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.

$59+ Cheap Flights from Pittsburgh to Washington, D.C. Dulles Intl Airport

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Cheap flight deals from Pittsburgh to Dulles Intl

Cheapest

Best

Last-minute

One-way

Cheapest flights from Pittsburgh to Dulles Intl
Explore the most affordable flight options available from Pittsburgh to Dulles Intl. Find the lowest fares from popular airlines and budget airlines, with prices last updated on August 20, 2026.

Mon 9/147:59 pm -

Nonstop1h 14m

Thu 9/171:05 pm -

Nonstop1h 06m

Deal found 8/17

$117

Mon 9/77:59 pm -

Nonstop1h 14m

Thu 9/1010:20 pm -

Nonstop1h 10m

Deal found 8/17

$146

Thu 9/1011:55 am -

1 stop4h 18m

Mon 9/1412:50 pm -

1 stop4h 17m

Deal found 8/16

$149

Fri 9/411:55 am -

1 stop4h 18m

Sat 9/58:25 am -

1 stop5h 57m

Deal found 8/17

$150

Fri 8/2111:55 am -

1 stop4h 18m

Sun 8/2312:50 pm -

1 stop4h 17m

Deal found 8/17

$151

Mon 8/1711:55 am -

1 stop4h 18m

Tue 8/188:25 am -

1 stop5h 57m

Deal found 8/15

$153

Thu 9/106:10 am -

Nonstop1h 09m

Fri 9/1110:20 pm -

Nonstop1h 10m

Deal found 8/18

$154

Fri 10/211:55 am -

1 stop4h 18m

Fri 10/98:25 am -

1 stop5h 57m

Deal found 8/17

$156

Thu 9/1712:10 pm -

1 stop5h 36m

Thu 9/246:10 am -

1 stop3h 32m

Deal found 8/18

$157

Thu 10/2911:55 am -

1 stop4h 18m

Sun 11/112:50 pm -

1 stop4h 17m

Deal found 8/17

$164

Thu 9/246:26 am -

Nonstop1h 09m

Tue 9/2910:20 pm -

Nonstop1h 10m

Deal found 8/16

$166

Wed 9/210:55 am -

1 stop5h 18m

Mon 9/712:50 pm -

1 stop4h 17m

Deal found 8/18

$168

Best flights from Pittsburgh to Dulles Intl
Discover carefully curated flight deals from Pittsburgh to Dulles Intl that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated August 20, 2026.

Tue 9/156:10 am -

Nonstop1h 09m

Thu 9/171:05 pm -

Nonstop1h 06m

Deal found 8/17

$117

Tue 9/296:00 am -

1 stop4h 21m

Tue 10/610:57 am -

1 stop4h 21m

Deal found 8/15

$157

Wed 9/211:55 am -

1 stop4h 18m

Sun 9/612:50 pm -

1 stop4h 17m

Deal found 8/18

$169

Tue 9/223:20 pm -

Nonstop1h 00m

Tue 9/2210:20 pm -

Nonstop1h 10m

Deal found 8/15

$117

Wed 9/167:59 pm -

Nonstop1h 14m

Fri 9/181:05 pm -

Nonstop1h 06m

Deal found 8/18

$154

Sun 10/185:20 pm -

1 stop13h 58m

Mon 10/1912:50 pm -

1 stop4h 17m

Deal found 8/15

$177

Thu 9/176:10 am -

Nonstop1h 09m

Fri 9/181:05 pm -

Nonstop1h 06m

Deal found 8/19

$154

Sat 9/52:55 pm -

1 stop20h 43m

Sun 9/65:25 pm -

1 stop14h 20m

Deal found 8/19

$186

Sat 9/262:55 pm -

1 stop20h 43m

Sun 9/275:25 pm -

1 stop14h 20m

Deal found 8/15

$186

Thu 10/86:26 am -

Nonstop1h 09m

Mon 10/1210:20 pm -

Nonstop1h 10m

Deal found 8/16

$187

Wed 9/236:10 am -

Nonstop1h 09m

Fri 9/2510:20 pm -

Nonstop1h 10m

Deal found 8/16

$209

Sat 9/57:59 pm -

Nonstop1h 14m

Sun 9/61:05 pm -

Nonstop1h 09m

Deal found 8/15

$253

Last-minute flights from Pittsburgh to Dulles Intl
Discover last-minute flight deals from Pittsburgh to Dulles Intl. Data last updated August 20, 2026 and is based on user searches.

Wed 8/1911:55 am -

1 stop4h 18m

Fri 8/2112:50 pm -

1 stop4h 17m

Deal found 8/15

$153

Fri 8/2111:55 am -

1 stop4h 18m

Sun 8/2312:50 pm -

1 stop4h 17m

Deal found 8/17

$151

Wed 9/210:55 am -

1 stop5h 18m

Mon 9/712:50 pm -

1 stop4h 17m

Deal found 8/18

$168

Fri 9/411:55 am -

1 stop4h 18m

Mon 9/712:50 pm -

1 stop4h 17m

Deal found 8/16

$150

Sat 9/52:55 pm -

1 stop20h 43m

Mon 9/78:25 am -

1 stop5h 57m

Deal found 8/15

$172

Mon 9/77:59 pm -

Nonstop1h 14m

Thu 9/1010:20 pm -

Nonstop1h 10m

Deal found 8/17

$146

Thu 9/1011:55 am -

1 stop4h 18m

Mon 9/1412:50 pm -

1 stop4h 17m

Deal found 8/16

$149

Thu 9/106:10 am -

Nonstop1h 09m

Fri 9/1110:20 pm -

Nonstop1h 10m

Deal found 8/18

$154

Mon 9/147:59 pm -

Nonstop1h 14m

Thu 9/171:05 pm -

Nonstop1h 06m

Deal found 8/17

$117

Thu 9/176:00 am -

1 stop4h 21m

Mon 9/215:15 pm -

1 stop6h 43m

Deal found 8/17

$157

Thu 9/1711:55 am -

1 stop4h 18m

Sun 9/2012:50 pm -

1 stop4h 17m

Deal found 8/17

$169

Thu 9/246:26 am -

Nonstop1h 09m

Tue 9/2910:20 pm -

Nonstop1h 10m

Deal found 8/16

$166

One-way flights from Pittsburgh to Dulles Intl
Search for one-way flight options from Pittsburgh to Dulles Intl. Find affordable one-way fares based on user searches. Data last updated August 20, 2026.

Sat 9/123:20 pm -

Nonstop1h 00m

Deal found 8/18

$59

Tue 9/811:55 am -

1 stop4h 18m

Deal found 8/18

$74

Thu 8/2711:55 am -

1 stop4h 18m

Deal found 8/17

$76

Mon 8/3111:55 am -

1 stop4h 18m

Deal found 8/15

$77

Wed 9/211:55 am -

1 stop4h 18m

Deal found 8/17

$78

Sat 10/177:21 am -

1 stop4h 29m

Deal found 8/17

$79

Sun 11/2911:55 am -

1 stop4h 18m

Deal found 8/18

$81

Fri 10/1611:55 am -

1 stop4h 18m

Deal found 8/18

$84

Wed 8/2610:55 am -

1 stop5h 18m

Deal found 8/17

$85

Tue 9/87:59 pm -

Nonstop1h 14m

Deal found 8/18

$92

Sun 9/135:25 pm -

1 stop13h 53m

Deal found 8/16

$95

Find flight deals from Pittsburgh to Dulles Intl

Most accurate provider	FlightHub 3 stars
Most trusted provider	FlightHub 3 stars
Round-trip from	$117 (United Airlines)
One-way from	$59 (United Airlines)
Popular in	July
Cheapest in	October
Average price	$279
Good round-trip deal	$492 or less
Good one-way deal	$243 or less

Provider with most accurate pricing for Pittsburgh-Washington, D.C. Dulles Intl flight deals.

Search Deals

Provider most trusted by Cheapflights users for Pittsburgh-Washington, D.C. Dulles Intl flights.

Search Deals

From Pittsburgh to Washington, D.C. Dulles Intl

Search Deals

One-way flight from Pittsburgh to Washington, D.C. Dulles Intl

Search Deals

Highest demand for flights based on searches. 15% potential increase in price ($56 potential increase over avg. RT price).

Search Deals

Cheapest flight prices on average. 7% potential price decrease ($21 potential savings vs. average RT price).

Search Deals

Average for round-trip flights in August 2026

Search Deals

Price to beat on a round-trip flight from Pittsburgh to Washington, D.C. Dulles Intl.

Search Deals

Price to beat on a one-way flight from Pittsburgh to Washington, D.C. Dulles Intl.

Search Deals

Cheapflights Fare Finder

Use the filters below to find and compare flights from Pittsburgh to Washington, D.C. Dulles Intl Airport that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

PittsburghWashington, D.C.

PIT Pittsburgh - IAD Washington, D.C. Dulles Intl

PITIAD

Pittsburgh

Tue 9/15

6:10 am-7:19 am

Nonstop1h 09m

Washington, D.C. Dulles Intl

Thu 9/17

1:05 pm-2:11 pm

Nonstop1h 06m

$117

Quickest round-trip

PittsburghWashington, D.C.

PIT Pittsburgh - IAD Washington, D.C. Dulles Intl

PITIAD

Pittsburgh

Tue 9/22

3:20 pm-4:20 pm

Nonstop1h 00m

Washington, D.C. Dulles Intl

Tue 9/22

10:20 pm-11:30 pm

Nonstop1h 10m

$117

PittsburghWashington, D.C.

PIT Pittsburgh - IAD Washington, D.C. Dulles Intl

PITIAD

Pittsburgh

Wed 9/16

7:59 pm-9:13 pm

Nonstop1h 14m

Washington, D.C. Dulles Intl

Fri 9/18

1:05 pm-2:11 pm

Nonstop1h 06m

$154

PittsburghWashington, D.C.

PIT Pittsburgh - IAD Washington, D.C. Dulles Intl

PITIAD

Pittsburgh

Thu 9/17

6:10 am-7:19 am

Nonstop1h 09m

Washington, D.C. Dulles Intl

Fri 9/18

1:05 pm-2:11 pm

Nonstop1h 06m

$154

PittsburghWashington, D.C.

PIT Pittsburgh - IAD Washington, D.C. Dulles Intl

PITIAD

Pittsburgh

Tue 9/29

6:00 am-10:21 am

1 stop4h 21m

Washington, D.C. Dulles Intl

Tue 10/6

10:57 am-3:18 pm

1 stop4h 21m

$157

PittsburghWashington, D.C.

PIT Pittsburgh - IAD Washington, D.C. Dulles Intl

PITIAD

Pittsburgh

Wed 9/2

11:55 am-4:13 pm

1 stop4h 18m

Washington, D.C. Dulles Intl

Sun 9/6

12:50 pm-5:07 pm

1 stop4h 17m

$169

PittsburghWashington, D.C.

PIT Pittsburgh - IAD Washington, D.C. Dulles Intl

PITIAD

Pittsburgh

Sun 10/18

5:20 pm-7:18 am

1 stop13h 58m

Washington, D.C. Dulles Intl

Mon 10/19

12:50 pm-5:07 pm

1 stop4h 17m

$177

PittsburghWashington, D.C.

PIT Pittsburgh - IAD Washington, D.C. Dulles Intl

PITIAD

Pittsburgh

Sat 9/5

2:55 pm-11:38 am

1 stop20h 43m

Washington, D.C. Dulles Intl

Sun 9/6

5:25 pm-7:45 am

1 stop14h 20m

$186

PittsburghWashington, D.C.

PIT Pittsburgh - IAD Washington, D.C. Dulles Intl

PITIAD

Pittsburgh

Sat 9/26

2:55 pm-11:38 am

1 stop20h 43m

Washington, D.C. Dulles Intl

Sun 9/27

5:25 pm-7:45 am

1 stop14h 20m

$186

PittsburghWashington, D.C.

PIT Pittsburgh - IAD Washington, D.C. Dulles Intl

PITIAD

Pittsburgh

Thu 10/8

6:26 am-7:35 am

Nonstop1h 09m

Washington, D.C. Dulles Intl

Mon 10/12

10:20 pm-11:30 pm

Nonstop1h 10m

$187

Flights are sorted by cheapest round-trip flights first.

Deals found on 8/16

Showing 1-10 of 24 resultsSorted by cheapest first

Compare providers for flights from Pittsburgh to Dulles Intl

Use the table below to compare price accuracy, trust ratings, and cancellation policies for each provider offering flight deals from Pittsburgh to Dulles Intl in August.

Provider	Price Accuracy	Trust Score*
Expedia	Price Accuracy1 star	Trust Score*3 stars
FlightHub	Price Accuracy3 stars	Trust Score*3 stars
Kiwi.com	Price Accuracy3 stars	Trust Score*3 stars
Trip.com	Price Accuracy1 star	Trust Score*3 stars

*The Trust Score is based on feedback from users after their booking experience. It measures overall satisfaction, helping us identify issues like hidden fees, problems during the ticketing process, and the quality of customer service. This score is our best indicator of the provider's quality and reliability.

Most accurate provider: When it comes to deals on Pittsburgh-Washington, D.C. Dulles Intl Airport flights, users find the pricing of FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on Pittsburgh-Washington, D.C. Dulles Intl Airport flight deals on Cheapflights vs. FlightHub >95% of the time. Price accuracy is based on data collected from Pittsburgh-Washington, D.C. Dulles Intl Airport flight searches over the past month and is updated monthly.
Most trusted provider: When it comes to deals on Pittsburgh-Washington, D.C. Dulles Intl Airport flights, Cheapflights users trust FlightHub the most. FlightHub has received a user feedback score of 3 out of 3 stars (3 being the best), meaning they have been trusted the most by Cheapflights users looking for Pittsburgh-Washington, D.C. Dulles Intl Airport flight deals. Provider user feedback score is based on Cheapflights searches over the past month and is updated monthly.

Best time to book a flight from Pittsburgh to Dulles Intl

Have a flexible travel schedule? Discover the best time to fly to Dulles Intl from Pittsburgh with our price prediction graph.

PIT-IAD

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 Pittsburgh to Washington, D.C. Dulles Intl Airport

Prices

Airlines

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

Currently, October is the cheapest month in which you can book a flight from Pittsburgh to Washington, D.C. Dulles Intl Airport (average of $193). Flying from Pittsburgh to Washington, D.C. Dulles Intl Airport in July is currently the most expensive (average of $532). 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 PIT to IAD?

It’s typically best to fly out from Pittsburgh to Washington, D.C. Dulles Intl Airport in the morning. Doing so could potentially save you 46% on the flight price compared to flying in the afternoon, which is usually more expensive.

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

Travelers seeking maximum savings on their Pittsburgh to Washington, D.C. Dulles Intl Airport flight should consider departing on Friday mornings 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.

How much does it cost to fly round-trip from Pittsburgh to Washington, D.C. Dulles Intl Airport?

Airfare is below average for this route at the moment.

Pittsburgh to Washington, D.C. Dulles Intl Airport flights typically cost between $220 and $572 in September.
The cheapest round-trip price found within the last 5 days was $117 on United Airlines (Sep 14-Sep 17).

The best insider tips for Pittsburgh to Washington, D.C. Dulles Intl Airport flights

Cheapflights partnered with top experts to bring you the best recommendations for your Pittsburgh to Washington, D.C. Dulles Intl Airport trip

Our travel experts

John Walton

Expert on PIT

Independent aviation journalist John Walton took his first flight at eight weeks old and hasn’t stopped travelling since. A world-renowned expert in airlines and the passenger experience, he writes in depth on aviation, is a resident expert on travel in Japan and France, and offers a uniquely queer perspective on travelling the world.

Ramsey Qubein

Expert on IAD

An avid traveler and aviation expert who has visited 173 countries, all 50 states and seven continents, Ramsey Qubein flies nearly 400,000 miles a year. As a North Carolina-based freelance journalist for publications including Conde Nast Traveler, Forbes, USA Today and Bloomberg among others, he explores the latest trends in aviation, hospitality, cruises and business.

Peruse reviews from past customers who have flown with United Airlines and Southern / Mokulele from Pittsburgh to Washington, D.C. Dulles Intl Airport to help guide your decision. You can also see how each airline stacks up in terms of entertainment options, comfort, food, crew/service, and boarding process.

United Airlines

7.4

Good

10,104 reviews

Reviews

1 / 20

10.0

Excellent

Dane,Jan 2026

TYS - IAD

It was a short flight, so no time for amenities. Just glad everything was quick and easy from boarding to arriving at my destination with my family

United Airlines

7.4

Good

10,104 reviews

United Airlines

7.4

Good

10,104 reviews

Reviews

1 / 20

10.0

Excellent

Dane,Jan 2026

TYS - IAD

It was a short flight, so no time for amenities. Just glad everything was quick and easy from boarding to arriving at my destination with my family

Southern / Mokulele

6.5

Okay

27 reviews

United Airlines

7.4

Good

10,104 reviews

Reviews

1 / 20

10.0

Excellent

Dane,Jan 2026

TYS - IAD

It was a short flight, so no time for amenities. Just glad everything was quick and easy from boarding to arriving at my destination with my family

Related info for your journey

What airport do you fly from for flights from Pittsburgh to Washington, D.C. Dulles Intl?
Pittsburgh (PIT) is the airport you will fly out of if you book a flight from Pittsburgh to Washington, D.C. Dulles Intl. You should not have trouble finding flights to Washington, D.C. Dulles Intl from Pittsburgh; the airport handles an average of 15 outbound flights to Washington, D.C. Dulles Intl per day. You should also have plenty of airline options to choose from since 2 airlines have flights from the Pittsburgh airport to Washington, D.C. Dulles Intl. It is only a 13.5 mi journey to Pittsburgh (PIT) from Pittsburgh’s city center.
How long is the flight from Pittsburgh to Washington, D.C. Dulles Intl Airport?
There are many flights that can get you from Pittsburgh to Washington, D.C. Dulles Intl Airport in 1h 09m. Fly via United Airlines or Delta to get the fastest option. The distance between Pittsburgh and Washington, D.C. Dulles Intl Airport is about 183 mi. When browsing for deals, the options you’ll see will be for both nonstop flights and flights with stops.
What are the cheapest airlines flying from Pittsburgh to Washington, D.C. Dulles Intl Airport round-trip?
Cheapflights users have booked flights from Pittsburgh to Washington, D.C. Dulles Intl Airport round-trip from $123. Another airline that can offer you cheap pricing is United Airlines. Southern / Mokulele is priced at 58% lower than the current average price of a flight leaving 3 months from now.
What are the most reliable airlines from Pittsburgh to Washington, D.C. Dulles Intl Airport?
Looking for the most reliable airlines to get you to your destination on time? Our data shows these are most likely to get you from Pittsburgh to Washington, D.C. Dulles Intl Airport on time: ANA (93%), Ethiopian Air (93%), Republic Airways (86%).
What are the cheapest flights from Pittsburgh to Washington, D.C. Dulles Intl Airport?
Looking for the cheapest flight from Pittsburgh to Washington, D.C. Dulles Intl Airport? While on average our users pay $2,140, our data indicates the cheapest price to be $143. The most popular route (Pittsburgh - Washington, D.C. Dulles Intl), is priced around $117.
Can I find deals for flights from Pittsburgh to Dulles Intl that include hotel bookings?
Yes. In addition to deals on Pittsburgh to Dulles Intl flights, Cheapflights offers vacation packages that include both flights and hotel.
How can I find direct flights from Pittsburgh to Dulles Intl?
After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Pittsburgh to Dulles Intl.
Can I find deals for business class flights from Pittsburgh to Dulles Intl?
Yes. Cheapflights offers flight deals from Pittsburgh 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 Pittsburgh to Washington, D.C. Dulles Intl Airport?
Currently, October is the cheapest month in which you can book a flight from Pittsburgh to Washington, D.C. Dulles Intl Airport (average of $193). Flying from Pittsburgh to Washington, D.C. Dulles Intl Airport in July is currently the most expensive (average of $532). 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

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Alternative routes

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Top 2 airlines flying from Pittsburgh to Dulles Intl

Airline	Cheapest	Average	Flexibility	On-time
Southern / Mokulele	Cheapest$123	Average$162	FlexibilityNo cancel fee	On-timeN/A
United Airlines	Cheapest$179	Average$291	FlexibilityNo cancel fee	On-time69%

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$59+ Cheap flights from Pittsburgh (PIT) 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 9/15. Fares are subject to change and may not be available on all flights or dates of travel.

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Cheap flight deals from Pittsburgh to Dulles Intl

Cheapest flights from Pittsburgh to Dulles IntlExplore the most affordable flight options available from Pittsburgh to Dulles Intl. Find the lowest fares from popular airlines and budget airlines, with prices last updated on August 20, 2026.

Explore the most affordable flight options available from Pittsburgh to Dulles Intl. Find the lowest fares from popular airlines and budget airlines, with prices last updated on August 20, 2026.

Best flights from Pittsburgh to Dulles IntlDiscover carefully curated flight deals from Pittsburgh to Dulles Intl that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated August 20, 2026.

Discover carefully curated flight deals from Pittsburgh to Dulles Intl that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated August 20, 2026.

Last-minute flights from Pittsburgh to Dulles IntlDiscover last-minute flight deals from Pittsburgh to Dulles Intl. Data last updated August 20, 2026 and is based on user searches.

Discover last-minute flight deals from Pittsburgh to Dulles Intl. Data last updated August 20, 2026 and is based on user searches.

One-way flights from Pittsburgh to Dulles IntlSearch for one-way flight options from Pittsburgh to Dulles Intl. Find affordable one-way fares based on user searches. Data last updated August 20, 2026.

Search for one-way flight options from Pittsburgh to Dulles Intl. Find affordable one-way fares based on user searches. Data last updated August 20, 2026.

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Use the filters below to find and compare flights from Pittsburgh to Washington, D.C. Dulles Intl Airport that are best for you.

Compare providers for flights from Pittsburgh to Dulles Intl

Provider information is updated monthly. Please note that these providers often have deals for this flight, but the availability may vary on a day-by-day basis on Cheapflights.

Use the table below to compare price accuracy, trust ratings, and cancellation policies for each provider offering flight deals from Pittsburgh to Dulles Intl in August.

Best time to book a flight from Pittsburgh to Dulles Intl

Have a flexible travel schedule? Discover the best time to fly to Dulles Intl from Pittsburgh with our price prediction graph.

Cheapflights Insights

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

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

It’s typically best to fly out from Pittsburgh to Washington, D.C. Dulles Intl Airport in the morning. Doing so could potentially save you 46% on the flight price compared to flying in the afternoon, which is usually more expensive.

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

Travelers seeking maximum savings on their Pittsburgh to Washington, D.C. Dulles Intl Airport flight should consider departing on Friday mornings 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.

How much does it cost to fly round-trip from Pittsburgh to Washington, D.C. Dulles Intl Airport?

Airfare is below average for this route at the moment.

Pittsburgh to Washington, D.C. Dulles Intl Airport flights typically cost between $220 and $572 in September.The cheapest round-trip price found within the last 5 days was $117 on United Airlines (Sep 14-Sep 17).

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

The most flights from PIT to IAD are scheduled on a Monday (16 on average). You will have fewer flight options on Wednesday, which is when the least amount of flights are scheduled (15 on average).

The best insider tips for Pittsburgh to Washington, D.C. Dulles Intl Airport flights

AI-powered summary based on content written by travel experts. AI can make mistakes.

Cheapflights partnered with top experts to bring you the best recommendations for your Pittsburgh to Washington, D.C. Dulles Intl Airport trip

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Reviews of airlines servicing Dulles Intl

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

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

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Alternative routes for Pittsburgh to Dulles Intl

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Other flights to Dulles Intl

Explore flights to Dulles Intl departing from other origins. Flights are based on user searches made on Cheapflights and were last updated on August 20, 2026.

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Pittsburgh and Dulles Intl flights

Browse other Pittsburgh and Dulles Intl flight options. Last updated on August 20, 2026.

Other flights from Pittsburgh

Browse through other flights departing from Pittsburgh. Flights are based on user searches made on Cheapflights and were last updated on August 20, 2026.

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Cheapest flights from Pittsburgh to Dulles Intl
Explore the most affordable flight options available from Pittsburgh to Dulles Intl. Find the lowest fares from popular airlines and budget airlines, with prices last updated on August 20, 2026.

Best flights from Pittsburgh to Dulles Intl
Discover carefully curated flight deals from Pittsburgh to Dulles Intl that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated August 20, 2026.

Last-minute flights from Pittsburgh to Dulles Intl
Discover last-minute flight deals from Pittsburgh to Dulles Intl. Data last updated August 20, 2026 and is based on user searches.

One-way flights from Pittsburgh to Dulles Intl
Search for one-way flight options from Pittsburgh to Dulles Intl. Find affordable one-way fares based on user searches. Data last updated August 20, 2026.

Pittsburgh to Washington, D.C. Dulles Intl Airport flights typically cost between $220 and $572 in September.
The cheapest round-trip price found within the last 5 days was $117 on United Airlines (Sep 14-Sep 17).