$134 Cheap Flights from Salt Lake City (SLC) to Washington (IAD)

View $134 flight on Sun, Aug 31, 2025Opens in a new window

Popular airlines from Salt Lake City International Airport (SLC) to Washington Dulles Intl. Airport (IAD)

  • Plan, book, fly with confidence

  • trending down icon

    Be in the know

    Get alerts if flight prices drop or rise*
  • bex rewards loyalty icon

    Book smarter

    Save up to 30% on select hotels after you book a flight*
  • one key icon

    Earn twice

    Earn your airline miles on top of our OneKeyCash
    Learn about One Key

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

Prices were available within the past 7 days and start at $134 for one-way flights and $243 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Southwest Airlines
Wed, Nov 12 - Tue, Nov 18
SLC
Salt Lake City
IAD
Washington
$243 Roundtrip, found 4 days ago
$243
Roundtrip
found 4 days ago
Select Southwest Airlines flight, departing Wed, Nov 12 from Salt Lake City to Washington, returning Tue, Nov 18, priced at $243 found 4 days ago
Frontier Airlines
Thu, Aug 7 - Sat, Aug 9
SLC
Salt Lake City
IAD
Washington
$258 Roundtrip, found 7 hours ago
$258
Roundtrip
found 7 hours ago
Select Frontier Airlines flight, departing Thu, Aug 7 from Salt Lake City to Washington, returning Sat, Aug 9, priced at $258 found 7 hours ago
Frontier Airlines
Thu, Aug 28 - Wed, Sep 10
SLC
Salt Lake City
IAD
Washington
$263 Roundtrip, found 4 days ago
$263
Roundtrip
found 4 days ago
Select Frontier Airlines flight, departing Thu, Aug 28 from Salt Lake City to Washington, returning Wed, Sep 10, priced at $263 found 4 days ago
Southwest Airlines
Wed, Nov 5 - Sun, Nov 9
SLC
Salt Lake City
IAD
Washington
$267 Roundtrip, found 6 days ago
$267
Roundtrip
found 6 days ago
Select Southwest Airlines flight, departing Wed, Nov 5 from Salt Lake City to Washington, returning Sun, Nov 9, priced at $267 found 6 days ago
Frontier Airlines
Mon, Aug 18 - Wed, Sep 10
SLC
Salt Lake City
IAD
Washington
$268 Roundtrip, found 6 days ago
$268
Roundtrip
found 6 days ago
Select Frontier Airlines flight, departing Mon, Aug 18 from Salt Lake City to Washington, returning Wed, Sep 10, priced at $268 found 6 days ago
United
Wed, Apr 22 - Sun, Apr 26
SLC
Salt Lake City
IAD
Washington
$271 Roundtrip, just found
$271
Roundtrip
just found
Select United flight, departing Wed, Apr 22 from Salt Lake City to Washington, returning Sun, Apr 26, priced at $271 just found
Delta
Wed, Apr 22 - Sun, Apr 26
SLC
Salt Lake City
IAD
Washington
$271 Roundtrip, just found
$271
Roundtrip
just found
Select Delta flight, departing Wed, Apr 22 from Salt Lake City to Washington, returning Sun, Apr 26, priced at $271 just found
Southwest Airlines
Wed, Nov 12 - Tue, Nov 18
SLC
Salt Lake City
IAD
Washington
$272 Roundtrip, found 4 days ago
$272
Roundtrip
found 4 days ago
Select Southwest Airlines flight, departing Wed, Nov 12 from Salt Lake City to Washington, returning Tue, Nov 18, priced at $272 found 4 days ago
United
Fri, Oct 31 - Mon, Nov 3
SLC
Salt Lake City
IAD
Washington
$277 Roundtrip, found 1 day ago
$277
Roundtrip
found 1 day ago
Select United flight, departing Fri, Oct 31 from Salt Lake City to Washington, returning Mon, Nov 3, priced at $277 found 1 day ago
Bargain Flight
Mon, Sep 8 - Tue, Sep 9
SLC
Salt Lake City
IAD
Washington
$279 Roundtrip, found 6 days ago
$279
Roundtrip
found 6 days ago
Select Bargain Flight flight, departing Mon, Sep 8 from Salt Lake City to Washington, returning Tue, Sep 9, priced at $279 found 6 days ago

Find the cheapest month to fly from Salt Lake City (SLC) to Washington (IAD)

May is typically the cheapest month to fly

From $198 - $493 per traveler.

Graph displaying average flight prices per month

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 $258
DCA
Ronald Reagan Washington National
CheapestClosest
Average driving time to city center8 min
Flights from $258
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, United
Roundtrip price
$243
Distance
1823 mi
Average flight time
6 hours 2 mins

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 November. 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 $134 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 $271 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 Delta flight leaving SLC on August 12 2025 and touching down at IAD. The price was last updated on July 23 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 $274. This fare is based on the lowest price found on Expedia departing within the next three months. The flight takes off from SLC on October 18 2025. Prices were last updated on July 23 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.

Explore a world of travel with Expedia

Salt Lake City nearby Airports

Provo

Provo to Washington
$182.48
*Available to One Key members.