$162 Cheap Flights from Pasco (PSC) to Washington (IAD)

View $162 flight on Thu, Feb 19, 2026Opens in a new window

Popular airlines from Tri-Cities Airport (PSC) to Washington Dulles Intl. Airport (IAD)

Cheap Flights from Pasco to Washington (PSC-IAD)

Prices were available within the past 7 days and start at $162 for one-way flights and $287 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Alaska Airlines
Thu, Jan 8 - Tue, Jan 13
PSC
Pasco
IAD
Washington
$287 Roundtrip, found 9 hours ago
$287
Roundtrip
found 9 hours ago
Select Alaska Airlines flight, departing Thu, Jan 8 from Pasco to Washington, returning Tue, Jan 13, priced at $287 found 9 hours ago
Delta
Mon, Dec 15 - Tue, Jan 6
PSC
Pasco
IAD
Washington
$287 Roundtrip, found 2 hours ago
$287
Roundtrip
found 2 hours ago
Select Delta flight, departing Mon, Dec 15 from Pasco to Washington, returning Tue, Jan 6, priced at $287 found 2 hours ago
Delta
Mon, Jan 19 - Fri, Feb 6
PSC
Pasco
IAD
Washington
$292 Roundtrip, found 2 days ago
$292
Roundtrip
found 2 days ago
Select Delta flight, departing Mon, Jan 19 from Pasco to Washington, returning Fri, Feb 6, priced at $292 found 2 days ago
Delta
Wed, Dec 10 - Sat, Dec 13
PSC
Pasco
IAD
Washington
$301 Roundtrip, found 4 days ago
$301
Roundtrip
found 4 days ago
Select Delta flight, departing Wed, Dec 10 from Pasco to Washington, returning Sat, Dec 13, priced at $301 found 4 days ago
Alaska Airlines
Wed, Feb 18 - Mon, Feb 23
PSC
Pasco
IAD
Washington
$305 Roundtrip, found 1 hour ago
$305
Roundtrip
found 1 hour ago
Select Alaska Airlines flight, departing Wed, Feb 18 from Pasco to Washington, returning Mon, Feb 23, priced at $305 found 1 hour ago
Delta
Mon, Jan 5 - Sat, Jan 24
PSC
Pasco
IAD
Washington
$306 Roundtrip, found 2 days ago
$306
Roundtrip
found 2 days ago
Select Delta flight, departing Mon, Jan 5 from Pasco to Washington, returning Sat, Jan 24, priced at $306 found 2 days ago
Alaska Airlines
Thu, Jan 8 - Tue, Jan 13
PSC
Pasco
IAD
Washington
$311 Roundtrip, found 9 hours ago
$311
Roundtrip
found 9 hours ago
Select Alaska Airlines flight, departing Thu, Jan 8 from Pasco to Washington, returning Tue, Jan 13, priced at $311 found 9 hours ago
Hawaiian Airlines
Fri, Feb 27 - Wed, Mar 18
PSC
Pasco
IAD
Washington
$324 Roundtrip, found 1 day ago
$324
Roundtrip
found 1 day ago
Select Hawaiian Airlines flight, departing Fri, Feb 27 from Pasco to Washington, returning Wed, Mar 18, priced at $324 found 1 day ago
United
Thu, Feb 19 - Tue, Feb 24
PSC
Pasco
IAD
Washington
$332 Roundtrip, found 3 days ago
$332
Roundtrip
found 3 days ago
Select United flight, departing Thu, Feb 19 from Pasco to Washington, returning Tue, Feb 24, priced at $332 found 3 days ago
American Airlines
Mon, Nov 24 - Sat, Nov 29
PSC
Pasco
IAD
Washington
$1,029 Roundtrip, found 16 hours ago
$1,029
Roundtrip
found 16 hours ago
Select American Airlines flight, departing Mon, Nov 24 from Pasco to Washington, returning Sat, Nov 29, priced at $1,029 found 16 hours ago

Find the cheapest month to fly from Pasco (PSC) to Washington (IAD)

May is typically the cheapest month to fly

From $315 - $672 per traveler.

Alternative airports near Washington

Prices were available within the past 7 days. Prices and availability are subject to change.

Select flight to Ronald Reagan Washington National DCA. Cheapest and Closest option available. Average driving time to city center is 8 minutes. Flights from $511
DCA
Ronald Reagan Washington National
CheapestClosest
Average driving time to city center8 min
Flights from $511

Frequently asked questions

How much does a flight from Tri-Cities Airport (PSC) to Washington Dulles Intl. Airport (IAD) cost?
Grab a cheap one-way flight from $162 or cheap return flight from $287 from Tri-Cities Airport (PSC) to Washington Dulles Intl. Airport (IAD) with Expedia. Enter your travel dates and sort by "Price (lowest to highest)" to see our cheapest flight offers on this route.
What is the cheapest month to fly from Tri-Cities Airport (PSC) to Washington Dulles Intl. Airport (IAD)?
The cheapest month to fly from PSC to IAD is January, when there's less demand. Off-peak season is typically when airlines offer better prices between these airports.
What is the cheapest airline that flies from Tri-Cities Airport (PSC) to Washington Dulles Intl. Airport (IAD)?
Expedia's filter tool lets you easily compare different airlines, flight durations and fares all in one place. Tailor the search to your trip, then sort by "Price (lowest to highest)" to see which carrier offers the cheapest PSC to IAD flight.
How many flights per day from Tri-Cities Airport (PSC) to Washington Dulles Intl. Airport (IAD)?
There are no daily direct flights available from Tri-Cities Airport (PSC) to Washington Dulles Intl. Airport (IAD). But you can book flights with layovers. Filter your search on Expedia to include one or more stops, and you'll be soaring above the clouds in no time at all.
What day of the week has the most flights from PSC to IAD?
Typically you'll find the greatest selection of flight options on a Friday. Tuesdays tend to be the quietest.* However, this can change depending on the time of year, carrier and other factors.*Busiest/quietest day to travel is based on Expedia flight demand through January to December 2024.
What is the best time to fly from Tri-Cities Airport (PSC) to Washington Dulles Intl. Airport (IAD)?
To land at Washington Dulles Intl. Airport (IAD) without delays, choose a flight that leaves from Tri-Cities Airport (PSC) before 3 PM. The chance of cancellations is 22% higher, on average, for departures after this time.**Most reliable time of the day and month to travel recommendation is based on January through August 2024 flight status data sourced from OAG's global flight data platform.
Is it cheaper to buy a plane ticket from Tri-Cities Airport (PSC) to Washington Dulles Intl. Airport (IAD) last-minute?
Last-minute fares from PSC to IAD are usually more expensive. To lock in the best rates, start searching for flights well in advance. That being said, if you're flexible with your travel plans, you may find a cheap ticket right before your journey.
Is it cheaper to book a PSC to IAD flight and hotel package?
Compared with arranging flights and hotels separately, booking a PSC to IAD flight and hotel package with Expedia could result in significant savings. What's more, having everything in one place will take the hassle out of planning your trip. Just pick your flights and choose from our wide range of hotels, then tailor your trip with extras like car rentals and activities.
Can I cancel or change the date of my flight from Tri-Cities Airport (PSC) to Washington Dulles Intl. Airport (IAD)?
In most cases, you can modify or cancel your PSC to IAD flight. However, additional fees may apply, especially if you booked more than 24 hours ago. Check your itinerary for the airline's guidelines and fees on flight changes, or if you want more details, visit our Customer Service portal.

Travel information

Origin airport
Tri-Cities
Destination airport
Washington Dulles Intl.
Airlines serving
Alaska Airlines, American Airlines, Delta, Hawaiian Airlines, United
Roundtrip price
$286
Distance
2151 mi

Book with confidence

Pasco to Washington Flights

The cheapest times to fly from Pasco to Washington

On average, Thursday can be the cheapest time to fly, according to data from the Airlines Reporting Corporation (ARC), one of the world's biggest databases for global airline sales. The data reveals that you could save up to 16% by flying on a Thursday—the cheapest day to travel on average—instead of a Sunday—the most expensive. Some of the most affordable flights from Pasco to Washington are during the month of January. You can find some of the cheapest flights from Pasco to Washington with Expedia's search tool and vast selection of airlines.

 

The best time to book a flight from Pasco to Washington

Sunday is one of the best days to book for cheap flights from Pasco to Washington: Tickets reserved on a Sunday cost between 6% and 13% less than those reserved on a Friday, according to ARC data. The data also suggests booking early can also lead to cheaper airfares. You could save 24% by buying your tickets for domestic flights at least a month in advance and 10% by booking international flights 2 months in advance.

 

How to find cheap round-trip tickets from Pasco to Washington

Being flexible with your dates and using Expedia's Price Drop Protection and Price Tracking features are some of the best ways of finding a cheap ticket from Pasco to Washington in 2025. You can also book with separate airlines for your outbound and return journeys, from $162 one-way. Expedia also offers Price Drop Protection, so if the cost of your airfare goes down after booking, you'll receive a credit for the difference*. This is available for a small fee, and is free to One Key Gold and Platinum tier members.

 

Expedia's Price Tracking feature means you can stay on top of airfares without manually checking every day. It sends you automated price alerts for cheap Pasco to Washington flights and uses historical data to indicate when the best time to book is. Download Expedia's free app to activate this handy tool in a few easy taps.

 

You could also save big by booking one of Expedia's vacation packages. Bundling together your Pasco to Washington airfare with your accommodations and car rental is often cheaper than booking everything separately. There’s also One Key, Expedia's generous rewards program. Join for free and you could earn One Key cash on most bookings to save on future adventures.

 

*Terms apply.

 

Disclaimer: ARC The statistics are based on average round-trip ticket prices between January and August 2023. The percentages you see are averages.

 

Pasco to Washington Flights

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*Available to One Key members.