$100 Cheap Flights from Salt Lake City (SLC) to Washington (IAD)

View $100 flight on Sat, May 31, 2025Opens in a new window

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Find available prices by choosing your travel dates.

Cheap Flights from Salt Lake City to Washington (SLC-IAD)

Prices were available within the past 7 days and start at $100 for one-way flights and $188 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Frontier Airlines
Sat, May 24 - Wed, May 28
SLC
Salt Lake City
IAD
Washington
$188 Roundtrip, found 10 hours ago
$188
Roundtrip
found 10 hours ago
Select Frontier Airlines flight, departing Sat, May 24 from Salt Lake City to Washington, returning Wed, May 28, priced at $188 found 10 hours ago
Frontier Airlines
Wed, May 28 - Mon, Jun 2
SLC
Salt Lake City
IAD
Washington
$198 Roundtrip, found 2 hours ago
$198
Roundtrip
found 2 hours ago
Select Frontier Airlines flight, departing Wed, May 28 from Salt Lake City to Washington, returning Mon, Jun 2, priced at $198 found 2 hours ago
Frontier Airlines
Fri, May 30 - Mon, Jun 2
SLC
Salt Lake City
IAD
Washington
$208 Roundtrip, found 4 hours ago
$208
Roundtrip
found 4 hours ago
Select Frontier Airlines flight, departing Fri, May 30 from Salt Lake City to Washington, returning Mon, Jun 2, priced at $208 found 4 hours ago
Frontier Airlines
Thu, May 15 - Sat, May 24
SLC
Salt Lake City
IAD
Washington
$218 Roundtrip, found 11 hours ago
$218
Roundtrip
found 11 hours ago
Select Frontier Airlines flight, departing Thu, May 15 from Salt Lake City to Washington, returning Sat, May 24, priced at $218 found 11 hours ago
Frontier Airlines
Fri, May 30 - Sun, Jun 1
SLC
Salt Lake City
IAD
Washington
$228 Roundtrip, found 4 hours ago
$228
Roundtrip
found 4 hours ago
Select Frontier Airlines flight, departing Fri, May 30 from Salt Lake City to Washington, returning Sun, Jun 1, priced at $228 found 4 hours ago
Frontier Airlines
Sun, May 18 - Sat, May 24
SLC
Salt Lake City
IAD
Washington
$238 Roundtrip, found 11 hours ago
$238
Roundtrip
found 11 hours ago
Select Frontier Airlines flight, departing Sun, May 18 from Salt Lake City to Washington, returning Sat, May 24, priced at $238 found 11 hours ago
Alaska Airlines
Fri, Jun 6 - Mon, Jun 9
SLC
Salt Lake City
IAD
Washington
$254 Roundtrip, just found
$254
Roundtrip
just found
Select Alaska Airlines flight, departing Fri, Jun 6 from Salt Lake City to Washington, returning Mon, Jun 9, priced at $254 just found
Delta
Fri, Oct 17 - Wed, Oct 29
SLC
Salt Lake City
IAD
Washington
$269 Roundtrip, just found
$269
Roundtrip
just found
Select Delta flight, departing Fri, Oct 17 from Salt Lake City to Washington, returning Wed, Oct 29, priced at $269 just found
United
Thu, May 22 - Sun, May 25
SLC
Salt Lake City
IAD
Washington
$282 Roundtrip, found 6 hours ago
$282
Roundtrip
found 6 hours ago
Select United flight, departing Thu, May 22 from Salt Lake City to Washington, returning Sun, May 25, priced at $282 found 6 hours ago
American Airlines
Thu, Jul 3 - Mon, Jul 7
SLC
Salt Lake City
IAD
Washington
$289 Roundtrip, found 1 hour ago
$289
Roundtrip
found 1 hour ago
Select American Airlines flight, departing Thu, Jul 3 from Salt Lake City to Washington, returning Mon, Jul 7, priced at $289 found 1 hour ago
Flights from Salt Lake City (SLC) to Washington (IAD)
Origin airport
Salt Lake City Intl.
Destination airport
Washington Dulles Intl.
Airlines serving
Alaska Airlines, American Airlines, Delta, Frontier Airlines, Hawaiian Airlines, Southwest Airlines, Sun Country Airlines, United
Roundtrip price
$188
Distance
1823 mi

Salt Lake City to Washington Flights

The cheapest times to fly from Salt Lake City 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 Salt Lake City to Washington are during the month of May. You can find some of the cheapest flights from Salt Lake City to Washington with Expedia's search tool and vast selection of airlines.

The best time to book a flight from Salt Lake City to Washington

Sunday is one of the best days to book for cheap flights from Salt Lake City 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 Salt Lake City 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 Salt Lake City to Washington in 2025. You can also book with separate airlines for your outbound and return journeys, from $100 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 Salt Lake City 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 Salt Lake City 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.

Frequently asked questions

How much does a flight from Salt Lake City Intl. Airport (SLC) to Washington Dulles Intl. Airport (IAD) cost?
Snag cheap return fares starting from $269 from Salt Lake City Intl. Airport (SLC) to Washington Dulles Intl. Airport (IAD). This information is based on the cheapest price found on Expedia for this return journey departing within the next three months. This airfare is for a United flight leaving SLC on May 10 2025 and touching down at IAD. The price was last updated on April 22 2025 and has not changed since.
What is the cheapest month to fly from SLC to IAD?
The cheapest flights from SLC to IAD are usually during off-peak season, when demand is lower. To save money, avoid flying during public holidays, school breaks and major local events.
Which airlines fly direct from Salt Lake City Intl. Airport (SLC) to Washington Dulles Intl. Airport (IAD)?
Hop on a direct flight with Delta Air Lines and go straight from Salt Lake City Intl. Airport (SLC) to Washington Dulles Intl. Airport (IAD).
What is the cheapest airline that flies from SLC to IAD?
Jet off from SLC to IAD with United. This carrier currently has the cheapest one-way fare on this route, starting at $186. This fare is based on the lowest price found on Expedia departing within the next three months. The flight takes off from SLC on June 10 2025. Prices were last updated on April 22 2025 and have not changed since.
How many flights per day from Salt Lake City Intl. Airport (SLC) to Washington Dulles Intl. Airport (IAD)?
With an average of 2 direct flights departing from Salt Lake City Intl. Airport (SLC) to Washington Dulles Intl. Airport (IAD) daily, you’ll be taking off on vacation soon enough.
What are the most popular departure times for flights from Salt Lake City Intl. Airport (SLC) to Washington Dulles Intl. Airport (IAD)?
More travelers fly between SLC and IAD at 5 PM than at any other point in the day. Rather go when it’s quieter? Pick a flight outside the busiest times and it’s possible you’ll save on your ticket as well.
What day of the week has the most flights from SLC to IAD?
Jet off on a Friday if you’re looking for the best selection of flights from Salt Lake City Intl. Airport (SLC) to Washington Dulles Intl. Airport (IAD).
What is the earliest flight from Salt Lake City Intl. Airport (SLC) to Washington Dulles Intl. Airport (IAD)?
The earliest flight jetting off from Salt Lake City Intl. Airport (SLC) is at around 5:40PM UTC-7. Board this flight and you’ll touch down at Washington Dulles Intl. Airport (IAD) at approximately 11:34PM UTC-5. The total time in the air is 3h 54m.
How long does it take to fly from Salt Lake City Intl. Airport (SLC) to Washington Dulles Intl. Airport (IAD)?
It usually takes 3 hours and 54 minutes to fly the 1,850 mi from SLC to IAD.
What airline has the least delays from SLC to IAD?
Consider booking with Delta Air Lines if you’d like to fly straight from Salt Lake City Intl. Airport (SLC) to Washington Dulles Intl. Airport (IAD) without any interruptions. This airline has the best track record for punctuality, with an on-time performance of 87%. Want to get notified of any changes? You can check your flight status using the Expedia App.
What is the best time to fly from Salt Lake City Intl. Airport (SLC) to Washington Dulles Intl. Airport (IAD)?
To avoid potential delays on the Salt Lake City Intl. Airport (SLC) to Washington Dulles Intl. Airport (IAD) route, travel before 3 PM. Later flights have a 22% higher chance of cancellation.**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.
What airports do you fly into for Washington from Salt Lake City Intl. Airport (SLC)?
Salt Lake City Intl. Airport (SLC) has direct flights to Washington. These are some of the airports you can fly to without stopovers:

  • Ronald Reagan Washington National Airport (DCA)
  • Washington Dulles Intl. Airport (IAD)
  • Baltimore Washington Intl. Thurgood Marshall Airport (BWI)

Is it cheaper to buy a plane ticket from Salt Lake City Intl. Airport (SLC) to Washington Dulles Intl. Airport (IAD) last-minute?
Booking your plane ticket from SLC to IAD shortly before your journey is typically more expensive. But if you’re flexible with your travel dates and times, you could bag a cheap last-minute fare.
Is it cheaper to book a SLC to IAD flight and hotel package?
You’ll generally save money by booking a SLC to IAD 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 everything in one place. Once you’ve chosen your ideal flights and accommodations, consider other add-ons like car rentals, tours and activities.
Can I cancel or change the date of my flight from Salt Lake City Intl. Airport (SLC) to Washington Dulles Intl. Airport (IAD)?
In most cases, you can modify or cancel your SLC to IAD flight. However, there may be additional charges, especially if your booking was made over 24 hours ago. Double-check your itinerary for the airline’s fees and rules on flight changes, or if you want more information, visit our Customer Service portal.

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*Available to One Key members.