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

View $162 flight on Sat, Feb 14, 2026Opens in a new window

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

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Cheap Flights from Washington to Pasco (IAD-PSC)

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
Mon, Jan 26 - Fri, Feb 6
IAD
Washington
PSC
Pasco
$287 Roundtrip, found 2 days ago
$287
Roundtrip
found 2 days ago
Select Alaska Airlines flight, departing Mon, Jan 26 from Washington to Pasco, returning Fri, Feb 6, priced at $287 found 2 days ago
Hawaiian Airlines
Tue, Jan 20 - Fri, Feb 6
IAD
Washington
PSC
Pasco
$287 Roundtrip, found 2 days ago
$287
Roundtrip
found 2 days ago
Select Hawaiian Airlines flight, departing Tue, Jan 20 from Washington to Pasco, returning Fri, Feb 6, priced at $287 found 2 days ago
Delta
Thu, Jan 22 - Tue, Feb 3
IAD
Washington
PSC
Pasco
$287 Roundtrip, found 2 days ago
$287
Roundtrip
found 2 days ago
Select Delta flight, departing Thu, Jan 22 from Washington to Pasco, returning Tue, Feb 3, priced at $287 found 2 days ago
Alaska Airlines
Thu, Jan 22 - Wed, Jan 28
IAD
Washington
PSC
Pasco
$305 Roundtrip, found 3 hours ago
$305
Roundtrip
found 3 hours ago
Select Alaska Airlines flight, departing Thu, Jan 22 from Washington to Pasco, returning Wed, Jan 28, priced at $305 found 3 hours ago
Hawaiian Airlines
Thu, Feb 5 - Fri, Feb 20
IAD
Washington
PSC
Pasco
$306 Roundtrip, found 2 days ago
$306
Roundtrip
found 2 days ago
Select Hawaiian Airlines flight, departing Thu, Feb 5 from Washington to Pasco, returning Fri, Feb 20, priced at $306 found 2 days ago
Delta
Sat, Jan 17 - Tue, Jan 27
IAD
Washington
PSC
Pasco
$311 Roundtrip, found 2 days ago
$311
Roundtrip
found 2 days ago
Select Delta flight, departing Sat, Jan 17 from Washington to Pasco, returning Tue, Jan 27, priced at $311 found 2 days ago
Delta
Mon, Jan 12 - Thu, Jan 29
IAD
Washington
PSC
Pasco
$312 Roundtrip, found 2 days ago
$312
Roundtrip
found 2 days ago
Select Delta flight, departing Mon, Jan 12 from Washington to Pasco, returning Thu, Jan 29, priced at $312 found 2 days ago
Delta
Sat, Jan 10 - Wed, Jan 14
IAD
Washington
PSC
Pasco
$313 Roundtrip, found 2 days ago
$313
Roundtrip
found 2 days ago
Select Delta flight, departing Sat, Jan 10 from Washington to Pasco, returning Wed, Jan 14, priced at $313 found 2 days ago
United
Tue, Dec 16 - Wed, Dec 17
IAD
Washington
PSC
Pasco
$339 Roundtrip, found 6 days ago
$339
Roundtrip
found 6 days ago
Select United flight, departing Tue, Dec 16 from Washington to Pasco, returning Wed, Dec 17, priced at $339 found 6 days ago
American Airlines
Fri, Jan 16 - Sat, Jan 17
IAD
Washington
PSC
Pasco
$561 Roundtrip, found 5 days ago
$561
Roundtrip
found 5 days ago
Select American Airlines flight, departing Fri, Jan 16 from Washington to Pasco, returning Sat, Jan 17, priced at $561 found 5 days ago

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Alternative airports near Pasco

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

Select flight to Tri-Cities PSC. Cheapest and Closest option available. Average driving time to city center is 4 minutes. Flights from $530
PSC
Tri-Cities
CheapestClosest
Average driving time to city center4 min
Flights from $530
Flights from Washington (IAD) to Pasco (PSC)
Origin airport
Washington Dulles Intl.
Destination airport
Tri-Cities
Airlines serving
Alaska Airlines, American Airlines, Delta, Hawaiian Airlines, United
Roundtrip price
$286
Distance
2151 mi

Washington to Pasco Flights

The cheapest times to fly from Washington to Pasco

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 Washington to Pasco are during the month of January. You can find some of the cheapest flights from Washington to Pasco with Expedia's search tool and vast selection of airlines.

 

The best time to book a flight from Washington to Pasco

Sunday is one of the best days to book for cheap flights from Washington to Pasco: 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 Washington to Pasco

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 Washington to Pasco 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 Washington to Pasco 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 Washington to Pasco 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.

 

Frequently asked questions

How much does a flight from Washington Dulles Intl. Airport (IAD) to Tri-Cities Airport (PSC) cost?
Secure a cheap one-way flight from $162 or cheap return flight from $287 from Washington Dulles Intl. Airport (IAD) to Tri-Cities Airport (PSC) with Expedia. Enter your travel dates and sort by "Price (lowest to highest)" to see our cheapest flight deals on this route.
What is the cheapest month to fly from Washington Dulles Intl. Airport (IAD) to Tri-Cities Airport (PSC)?
Flying in January can help you save, as it's the cheapest month for flights between IAD and PSC. You'll typically find the lowest fares during the off-season.
What is the cheapest airline that flies from Washington Dulles Intl. Airport (IAD) to Tri-Cities Airport (PSC)?
To find the cheapest airline flying from IAD to PSC, use Expedia's filter tool. Tailor your search based on what's important to you, such as preferred carriers and cabin class. You can then sort your results by "Price (lowest to highest)" to see the cheapest fares upfront.
How many flights per day from Washington Dulles Intl. Airport (IAD) to Tri-Cities Airport (PSC)?
You'll need to book a flight with a layover when traveling from Washington Dulles Intl. Airport (IAD) to Tri-Cities Airport (PSC). Direct flights don't operate daily on this route. However, simply filter your search to include one or more stops to discover an option that works for you.
What day of the week has the most flights from IAD to PSC?
Usually you'll find the greatest selection of flight options on a Friday. Tuesdays tend to be the quietest.* However, this can vary based 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 Washington Dulles Intl. Airport (IAD) to Tri-Cities Airport (PSC)?
Choose a flight from Washington Dulles Intl. Airport (IAD) to Tri-Cities Airport (PSC) that leaves before 3 PM to reduce the risk of cancellations and delays. Later departures are on average 22% more likely to be canceled.**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 Washington Dulles Intl. Airport (IAD) to Tri-Cities Airport (PSC) last-minute?
Holding off until right before your break to book a ticket from IAD to PSC generally means paying more. While you might find some last-minute discounts, they aren't always guaranteed. Allow some flexibility in your schedule for a better chance of getting a bargain.
Is it cheaper to book an IAD to PSC flight and hotel package?
You'll generally save money by booking an IAD to PSC flight and hotel package compared to booking separately. In fact, you could save hundreds of dollars by bundling with Expedia. And it's simple to manage it all in one convenient place. Once you've selected your ideal accommodations and flights, consider adding extras like car rentals, tours and activities.
Can I cancel or change the date of my flight from Washington Dulles Intl. Airport (IAD) to Tri-Cities Airport (PSC)?
If you booked your IAD to PSC flight in the last 24 hours, you may be able to cancel or modify it without fees. Depending on the airline and the type of ticket you have, additional charges may apply for changes after that time. Airline policies and contact information can be found in your itinerary or confirmation email. Or, head to our Customer Service portal for further details.

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*Available to One Key members.