HomeSearch by dateVacation packagesHotelsFlight dealsCar rentalTravel tips & news
Dulles Intl

$166+ Cheap flights from Pasco (PSC) 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 5/16. Fares are subject to change and may not be available on all flights or dates of travel.
PSC — IAD
May 10 — May 171
Sun 5/10
Sun 5/17
1 adult, Economy
We work with more than 300 partners to bring you better travel deals

Find cheap flights from Pasco to Dulles Intl with Cheapflights

1. Tell us where you want to go

Enter your travel information like dates, passengers, trip type (one-way or round trip), and preferred cabin class then click “Find deals”

2. Select your favorite providers

We find the providers serving your travel needs. Choose up to four travel providers to compare side-by-side for flights, hotels, or car rentals.

3. Compare prices and book

Review each provider’s pricing and select the best option for you! Book through your favorite provider’s website for a seamless experience.

Cheap flight deals from Pasco to Dulles Intl

Cheapest flights from Pasco to Dulles Intl
Explore the most affordable flight options available from Pasco to Dulles Intl. Find the lowest fares from popular airlines and budget airlines, with prices last updated on April 10, 2026.

This Delta deal was found by Cheapflights users on 4/7. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 5/212:28 pm
PSC
-
IAD
1 stop8h 27m
Delta
Wed 5/67:00 am
IAD
-
PSC
1 stop7h 46m
Delta
Deal found 4/7$351
This Delta deal was found by Cheapflights users on 4/7. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 5/26:15 am
PSC
-
IAD
2 stops13h 48m
Delta
Sat 5/97:00 am
IAD
-
PSC
1 stop7h 46m
Delta
Deal found 4/7$356
This Alaska Airlines deal was found by Cheapflights users on 4/7. 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 Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 5/47:30 pm
PSC
-
IAD
1 stop7h 20m
Alaska Airlines
Tue 5/59:00 am
IAD
-
PSC
1 stop9h 42m
Alaska Airlines
Deal found 4/7$394
This Delta deal was found by Cheapflights users on 4/10. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 6/212:29 pm
PSC
-
IAD
1 stop8h 44m
Delta
Sat 6/67:00 am
IAD
-
PSC
1 stop10h 43m
Delta
Deal found 4/10$397
This Alaska Airlines deal was found by Cheapflights users on 4/7. 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 Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 5/17:30 pm
PSC
-
IAD
1 stop7h 20m
Alaska Airlines
Tue 5/59:00 am
IAD
-
PSC
1 stop9h 42m
Alaska Airlines
Deal found 4/7$400
This Delta deal was found by Cheapflights users on 4/7. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 5/612:26 pm
PSC
-
IAD
1 stop8h 29m
Delta
Sat 5/97:00 am
IAD
-
PSC
1 stop10h 45m
Delta
Deal found 4/7$405
This Delta deal was found by Cheapflights users on 4/7. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 5/26:15 am
PSC
-
IAD
2 stops13h 48m
Delta
Tue 5/510:11 am
IAD
-
PSC
2 stops12h 40m
Delta
Deal found 4/7$415
This Alaska Airlines deal was found by Cheapflights users on 4/7. 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 Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 5/21:21 pm
PSC
-
IAD
1 stop7h 48m
Alaska Airlines
Thu 5/77:10 am
IAD
-
PSC
1 stop8h 34m
Alaska Airlines
Deal found 4/7$420
This American Airlines deal was found by Cheapflights users on 4/7. 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.
Tue 6/25:15 am
PSC
-
IAD
2 stops14h 32m
American Airlines
Sat 6/66:14 am
IAD
-
PSC
2 stops11h 44m
American Airlines
Deal found 4/7$422

Find flight deals from Pasco to Dulles Intl

Discover tips and strategies to find the most affordable flight options for your journey from Pasco (PSC) 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 April 10, 2026.

Most accurate provider

Expedia
1 star

Most trusted provider

Expedia
3 stars

Round-trip from

$351
(Delta)

One-way from

$166
(United Airlines)

Popular in

September

Cheapest in

March

Average price

$642
Provider with most accurate pricing for Pasco Tri Cities-Washington, D.C. Dulles Intl flight deals.
Search Deals
Provider most trusted by Cheapflights users for Pasco Tri Cities-Washington, D.C. Dulles Intl flights.
Search Deals
From Pasco Tri Cities to Washington, D.C. Dulles Intl
Search Deals
One-way flight from Pasco Tri Cities to Washington, D.C. Dulles Intl
Search Deals
Highest demand for flights based on searches. 24% potential increase in price ($179 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 13% potential price decrease ($68 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in April 2026
Search Deals

Cheapflights Fare Finder

 
Customize your flight search to find flights from Pasco 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 April 10, 2026.
Use the filters below to find and compare flights from Pasco to Washington, D.C. Dulles Intl Airport that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip
Quickest round-trip

PascoWashington, D.C.

PSC - IAD

PSCIAD

Pasco Tri Cities

Sat 5/2

1:21 pm-12:09 am

1 stop7h 48m

Washington, D.C. Dulles Intl

Tue 5/5

7:10 am-12:44 pm

1 stop8h 34m

$351

PascoWashington, D.C.

PSC - IAD

PSCIAD

Pasco Tri Cities

Tue 6/2

12:29 pm-12:13 am

1 stop8h 44m

Washington, D.C. Dulles Intl

Sat 6/6

10:43 am-7:33 pm

2 stops11h 50m

$416

PascoWashington, D.C.

PSC - IAD

PSCIAD

Pasco Tri Cities

Sat 5/16

1:39 pm-1:24 am

1 stop8h 45m

Washington, D.C. Dulles Intl

Sat 5/23

5:55 pm-12:50 am

1 stop9h 55m

$420

PascoWashington, D.C.

PSC - IAD

PSCIAD

Pasco Tri Cities

Wed 5/27

7:17 pm-7:34 am

1 stop9h 17m

Washington, D.C. Dulles Intl

Mon 6/8

6:00 am-11:04 am

1 stop8h 04m

$433

PascoWashington, D.C.

PSC - IAD

PSCIAD

Pasco Tri Cities

Tue 6/2

5:15 am-10:47 pm

2 stops14h 32m

Washington, D.C. Dulles Intl

Sat 6/6

6:20 am-2:58 pm

2 stops11h 38m

$459

PascoWashington, D.C.

PSC - IAD

PSCIAD

Pasco Tri Cities

Wed 5/6

12:26 pm-11:55 pm

1 stop8h 29m

Washington, D.C. Dulles Intl

Sun 5/10

7:30 am-2:06 pm

1 stop9h 36m

$482

PascoWashington, D.C.

PSC - IAD

PSCIAD

Pasco Tri Cities

Sat 4/25

1:21 pm-12:09 am

1 stop7h 48m

Washington, D.C. Dulles Intl

Wed 4/29

7:10 am-12:44 pm

1 stop8h 34m

$501

PascoWashington, D.C.

PSC - IAD

PSCIAD

Pasco Tri Cities

Fri 5/15

1:51 pm-11:59 pm

1 stop7h 08m

Washington, D.C. Dulles Intl

Sat 5/23

5:38 pm-12:14 am

1 stop9h 36m

$509
Cheapest one-way

PascoWashington, D.C.

PSC - IAD

PSCIAD

Pasco Tri Cities

Sat 5/16

1:39 pm-1:24 am

1 stop8h 45m

$166
Quickest one-way

PascoWashington, D.C.

PSC - IAD

PSCIAD

Pasco Tri Cities

Wed 5/6

7:30 pm-5:50 am

1 stop7h 20m

$186

Flights are sorted by cheapest round-trip flights first.

Deals found on 4/5

Showing 1-10 of 15 resultsSorted by cheapest first
1
2

Compare providers for flights from Pasco 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 Pasco to Dulles Intl in April.
ProviderPrice AccuracyTrust Score*
ExpediaPrice Accuracy1 starTrust Score*3 stars
CheapfaremartPrice Accuracy-Trust Score*1 star

*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 Pasco-Washington, D.C. Dulles Intl Airport flights, users find the pricing of Expedia to be most consistent on Cheapflights vs. Expedia Users can find the same prices on Pasco-Washington, D.C. Dulles Intl Airport flight deals on Cheapflights vs. Expedia <90% of the time. Price accuracy is based on data collected from Pasco-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 Pasco-Washington, D.C. Dulles Intl Airport flights, Cheapflights users trust Expedia the most. Expedia 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 Pasco-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 Pasco to Dulles Intl

Have a flexible travel schedule? Discover the best time to fly to Dulles Intl from Pasco 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 Pasco to Washington, D.C. Dulles Intl Airport

What’s the top layover airport for flights from Pasco to Washington, D.C. Dulles Intl Airport?

Share of 1-stop round-trip flights from Pasco to Washington, D.C. Dulles Intl Airport chosen by Cheapflights users in the past 12 months, using the same layover each way.

Seattle (SEA) – chosen by Cheapflights users on 86% of 1-stop itineraries from Pasco to Washington, D.C. Dulles Intl Airport on Cheapflights.

What’s the cheapest layover airport for flights from Pasco to Washington, D.C. Dulles Intl Airport?

Average round-trip fare for 1-stop flights from Pasco to Washington, D.C. Dulles Intl Airport, chosen by Cheapflights users in the past 12 months, with the same layover each way.

Seattle (SEA) is the most affordable 1-stop option, with an average round-trip price of $620.

What’s the fastest layover option from Pasco to Washington, D.C. Dulles Intl Airport?

Shortest average travel time for 1-stop one-way flights from Pasco to Washington, D.C. Dulles Intl Airport, based on itineraries clicked by Cheapflights users over the past 12 months, grouped by layover airport.

Flights via Denver (DEN) have the shortest average one-way travel time for 1-stop routes: 7h 36m.

Which airport typically offers the quickest layover for flights from Pasco to Washington, D.C. Dulles Intl Airport?

Average layover duration for 1-stop one-way flights from Pasco to Washington, D.C. Dulles Intl Airport, chosen by Cheapflights users in the last 12 months, grouped by stopover airport.

Flights via Denver (DEN) offer the fastest connection on this route, with an average layover time of 1h 35m.

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 April 10, 2026.
Read through reviews of airlines operating flights from Pasco to Washington, D.C. Dulles Intl Airport, such as Alaska Airlines,Delta, andUnited Airlines. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.
Alaska Airlines
7.9
Good
12,207 reviews

Food

7.0

Comfort

7.8

Overall

7.9

Entertainment

7.0

Boarding

8.1

Crew

8.5

Reviews

1 / 20
4.0
Okay

Anonymous,Dec 2025

SEA - MSY

I really got a lesson in upgrades. I let my seat get chosen . Both times a middle seat...on purpose ...even when we were not full. That's petty I sat behind the first class . They got more than 1 drink ...and a snack . .and the staff actually talked to them...behind a see thru shawl/sheet in the aisle....... You could see over the seats just fine and you could hear the voices just fine. But the sheet let You KNOW. Your not welcome here. For a moment I regretted not spending 300 dollars per seat so I could see a smile and eat a sandwhich and enjoy my seat . The married couple drank champain and laughed and flirted with each other. It looked so happy and care free MONEY really does buy happiness ..the hateful glares and sighs from my seat mates brought me back to reality I wasn't rich and I still had 2 hours left in this middle seat.
Alaska Airlines
7.9
Good
12,207 reviews
Alaska Airlines
7.9
Good
12,207 reviews

Food

7.0

Comfort

7.8

Overall

7.9

Entertainment

7.0

Boarding

8.1

Crew

8.5

Reviews

1 / 20
4.0
Okay

Anonymous,Dec 2025

SEA - MSY

I really got a lesson in upgrades. I let my seat get chosen . Both times a middle seat...on purpose ...even when we were not full. That's petty I sat behind the first class . They got more than 1 drink ...and a snack . .and the staff actually talked to them...behind a see thru shawl/sheet in the aisle....... You could see over the seats just fine and you could hear the voices just fine. But the sheet let You KNOW. Your not welcome here. For a moment I regretted not spending 300 dollars per seat so I could see a smile and eat a sandwhich and enjoy my seat . The married couple drank champain and laughed and flirted with each other. It looked so happy and care free MONEY really does buy happiness ..the hateful glares and sighs from my seat mates brought me back to reality I wasn't rich and I still had 2 hours left in this middle seat.
Delta
7.9
Good
8,402 reviews
Alaska Airlines
7.9
Good
12,207 reviews

Food

7.0

Comfort

7.8

Overall

7.9

Entertainment

7.0

Boarding

8.1

Crew

8.5

Reviews

1 / 20
4.0
Okay

Anonymous,Dec 2025

SEA - MSY

I really got a lesson in upgrades. I let my seat get chosen . Both times a middle seat...on purpose ...even when we were not full. That's petty I sat behind the first class . They got more than 1 drink ...and a snack . .and the staff actually talked to them...behind a see thru shawl/sheet in the aisle....... You could see over the seats just fine and you could hear the voices just fine. But the sheet let You KNOW. Your not welcome here. For a moment I regretted not spending 300 dollars per seat so I could see a smile and eat a sandwhich and enjoy my seat . The married couple drank champain and laughed and flirted with each other. It looked so happy and care free MONEY really does buy happiness ..the hateful glares and sighs from my seat mates brought me back to reality I wasn't rich and I still had 2 hours left in this middle seat.
United Airlines
7.4
Good
9,561 reviews
Alaska Airlines
7.9
Good
12,207 reviews

Food

7.0

Comfort

7.8

Overall

7.9

Entertainment

7.0

Boarding

8.1

Crew

8.5

Reviews

1 / 20
4.0
Okay

Anonymous,Dec 2025

SEA - MSY

I really got a lesson in upgrades. I let my seat get chosen . Both times a middle seat...on purpose ...even when we were not full. That's petty I sat behind the first class . They got more than 1 drink ...and a snack . .and the staff actually talked to them...behind a see thru shawl/sheet in the aisle....... You could see over the seats just fine and you could hear the voices just fine. But the sheet let You KNOW. Your not welcome here. For a moment I regretted not spending 300 dollars per seat so I could see a smile and eat a sandwhich and enjoy my seat . The married couple drank champain and laughed and flirted with each other. It looked so happy and care free MONEY really does buy happiness ..the hateful glares and sighs from my seat mates brought me back to reality I wasn't rich and I still had 2 hours left in this middle seat.

Related info for your journey

Find useful and relevant information for your journey from Pasco 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 Pasco to Washington, D.C. Dulles Intl?

    Most people fly from Pasco Tri Cities (PSC) if they book a flight from Pasco to Washington, D.C. Dulles Intl. On average, Tri Cities has 0 outbound flights to Washington, D.C. Dulles Intl per day from 3 airlines. Pasco Tri Cities is conveniently located just 1.9 mi from Pasco’s city center.

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

    For as low as $351, Alaska Airlines can have you in Washington, D.C. Dulles Intl Airport from Pasco in 7h 48m. Airlines will cover a distance of 2151 mi. This flight may include one or multiple stops.

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

    Cheapflights users have booked flights from Pasco to Washington, D.C. Dulles Intl Airport round-trip from $149. Other airlines that can offer you cheap pricing are United Airlines, from $249, and Alaska Airlines, from $338. Delta is priced at 73% lower than the current average price of a flight leaving 3 months from now.

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

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

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

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

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

    Yes. Cheapflights offers flight deals from Pasco 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.

See more FAQs

Traveling to a place near Washington, D.C. Dulles Intl Airport?

Book flights to Washington, D.C. Dulles Intl Airport if you plan to visit one of these locations
Alexandria
Woodbridge
Tysons
Owings Mills
Springfield
Arlington
Silver Spring
Herndon
Hyattsville
Hanover
Laurel
Rockville
Upper Marlboro
Largo
Bowie
Clinton
Towson
Cordova
Manassas
Falls Church

Browse thousands of different options on Cheapflights for your next trip

Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.

Top 3 airlines flying from Pasco to Dulles Intl

Discover the top 3 airlines that operate flights from Pasco 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 April 10, 2026.
AirlineCheapestAverageFlexibilityOn-time
DeltaCheapest$149Average$359FlexibilityNo cancel feeOn-timeN/A
United AirlinesCheapest$249Average$513FlexibilityNo cancel feeOn-time69%
Alaska AirlinesCheapest$338Average$605FlexibilityNo cancel feeOn-time75%

100% Free

Cheapflights is completely free to use, so you can start saving the moment you arrive.

Book with Flexibility

Our users can plan ahead with confidence and find flights with no change fees

Travel Smart

Millions of people come to us for their flight needs every year. We help make travel planning easy by providing useful insights and data-driven graphs that can inform your decisions.