IAD - SLC

$145 Find Cheap Flights from Washington Dulles Airport to Salt Lake City

This is the cheapest one-way flight price found by a KAYAK user in the last 72 hours by searching for a flight from Dulles Intl to Salt Lake City departing on 12/10. Fares are subject to change and may not be available on all flights or dates of travel. Click the price to replicate the search for this deal.
1 adult
1 adult, Economy, 0 bags

KAYAK searches hundreds of travel sites at once for deals on flights to Salt Lake City

 
These are the airlines KAYAK users have selected most often from within our search results in flight searches from Washington, D.C. to Salt Lake City.
These are the airlines KAYAK users have selected most often from within our search results in flight searches from Washington, D.C. to Salt Lake City.
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Everything you should know

Cheapest round-trip
$269
Overall average: $499
Delta
Mon 1/26Wed 1/28
IAD - SLC • Non-stop
Cheapest one-way
$145
Typical prices: $331-$503
Delta
Wed 12/10
IAD - SLC • 1 stop
Our travelers' advice
AI-generated summary based on content written by travel experts
United's Economy Plus offers more legroom on this route.
Use TRAX light rail for easy access from SLC to downtown.
Expert advice
Expert advice
Expert advice
Expert advice
Top airlines
Delta
Cheapest • from $269 (round-trip)
Southwest
Best reviews • 8.0 score
Airline reviews
Airline reviews
+1
+1
Airline reviews
Airline reviews
+1
When to book
3 weeks
in advance
Our data shows that travelers who book at least 3 weeks in advance save around 13% compared to booking last minute.
Insights
Insights
Insights
Insights
When to travel
July
Cheapest • 24% price drop
July
Most popular
Good to know
Good to know
+1
+1
Good to know
Good to know
+1
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We hope you love your trip to Salt Lake City!
Flight Deals
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Expert advice
Flight Deals

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

 
Here are some of the best deals found on KAYAK recently from the most popular airlines for round-trip flights from Dulles Intl to Salt Lake City that are departing in the next months. While these flights were available on KAYAK in the last 72 hours, prices and availability are subject to change and deals may expire.
Discover the best prices for you by selecting your travel dates on KAYAK.

Recent round-trip flight deals from Dulles Intl to Salt Lake City

Mon, Jan 26 - Wed, Jan 28
Delta Logo
7:05 am - 10:02 amIAD-SLC
4h 57mnonstop
Delta Logo
5:55 pm - 11:48 pmSLC-IAD
3h 53mnonstop
$269Delta
Find Deal
Tue, Jan 27 - Thu, Jan 29
United Airlines Logo
5:44 pm - 8:46 pmIAD-SLC
5h 02mnonstop
United Airlines Logo
7:35 am - 6:29 pmSLC-IAD
8h 54m1 stop
$275United Airlines
Find Deal
Tue, Feb 10 - Wed, Feb 18
United Airlines Logo
5:44 pm - 8:46 pmIAD-SLC
5h 02mnonstop
United Airlines Logo
7:00 am - 4:30 pmSLC-IAD
7h 30m1 stop
$279United Airlines
Find Deal
Fri, Dec 12 - Tue, Dec 16
Southwest Logo
5:50 pm - 11:30 pmIAD-SLC
7h 40m1 stop
Southwest Logo
5:45 am - 5:05 pmSLC-IAD
9h 20m1 stop
$289Southwest
Find Deal
Fri, Dec 5 - Mon, Dec 8
Delta Logo
7:05 am - 9:56 amIAD-SLC
4h 51mnonstop
Delta Logo
5:33 pm - 11:29 pmSLC-IAD
3h 56mnonstop
$293Delta
Find Deal
Sat, Jan 24 - Sat, Jan 31
American Airlines Logo
7:01 am - 7:53 pmIAD-SLC
14h 52m2 stops
American Airlines Logo
6:56 am - 9:17 pmSLC-IAD
12h 21m2 stops
$299American Airlines
Find Deal
Thu, Feb 19 - Tue, Feb 24
Southwest Logo
4:40 pm - 10:55 pmIAD-SLC
8h 15m1 stop
Southwest Logo
6:25 am - 9:55 pmSLC-IAD
13h 30m2 stops
$300Southwest
Find Deal
Tue, Dec 9 - Fri, Dec 12
American Airlines Logo
6:00 am - 12:34 pmIAD-SLC
8h 34m1 stop
American Airlines Logo
11:49 pm - 8:44 amSLC-IAD
6h 55m1 stop
$313American Airlines
Find Deal
Tue, Jan 27 - Fri, Jan 30
Alaska Airlines Logo
5:26 pm - 8:44 pmIAD-SLC
29h 18m1 stop
Alaska Airlines Logo
7:14 am - 5:04 pmSLC-IAD
7h 50m1 stop
$335Alaska Airlines
Find Deal
Tue, Nov 11 - Mon, Nov 17
Alaska Airlines Logo
5:40 pm - 11:32 amIAD-SLC
19h 52m1 stop
Alaska Airlines Logo
2:01 pm - 6:23 amSLC-IAD
14h 22m1 stop
$338Alaska Airlines
Find Deal
Booking Insights

KAYAK's insights & trends for Dulles Intl to Salt Lake City flights

Get data-powered insights and trends into flights from Dulles Intl to Salt Lake City to help you find the cheapest flights, the best time to fly and much more.

What’s the cheapest day of the week to fly from Washington Dulles Airport to Salt Lake City?

The average price of all round-trip flights from Washington, D.C. Dulles Intl Airport to Salt Lake City clicked on KAYAK for each day over the last 12 months.

For Washington Dulles Airport to Salt Lake City, Tuesday is the cheapest day to fly on average and Sunday is the most expensive. Flying from Salt Lake City back to Washington Dulles Airport, the best deals are generally found on Tuesday, with Sunday being the most expensive.

What is the cheapest month to fly from Washington, D.C. Dulles Intl Airport to Salt Lake City?

To calculate monthly average prices, KAYAK takes all prices for each month over the last year for round-trip flights from Washington, D.C. Dulles Intl Airport to Salt Lake City, removes the top 0.1% to account for outliers, and then takes the median of all values for each month.

The cheapest month for flights from Washington, D.C. Dulles Intl Airport to Salt Lake City is July, where tickets cost $359 (return) on average. On the other hand, the most expensive months are December and March, where the average cost of round-trip tickets is $644 and $599 respectively.

Can I save money by flying with a layover from Washington, D.C. Dulles Intl Airport to Salt Lake City?

The average round-trip price for all non-stop flights, flights with one layover, and flights with two layovers for the route found by users searching on KAYAK in the last 2 weeks.

Yes, flying with a layover may cost you more time, but you can also save money on the route, with a 1 stop layover the cheapest option at $425 on average.

How far in advance should I book a flight from Washington, D.C. Dulles Intl Airport to Salt Lake City?

To calculate weekly average prices, KAYAK takes all prices for each week before departure over the last year for round-trip flights from Washington, D.C. Dulles Intl Airport to Salt Lake City, removes the top 0.1% to account for outliers, and then takes the average of all the values for each week.

To get a below average price on the flight from Washington, D.C. Dulles Intl Airport to Salt Lake City, you should book around 3 weeks before departure, which saves you about 13% compared to booking last minute. For the absolute cheapest price, our data suggests you should book 5 weeks before departure.

Expert advice

Expert advice for your flight from Dulles Intl to Salt Lake City

 
Snippets provided in this section are AI-generated based on a summarization of KAYAK-commissioned articles. The articles are presented as-is, for general informational purposes only, and may not be up-to-date. The opinions contained in the articles are original to the author and reflect their authentic experience, which may vary significantly from the experience of others.
KAYAK teamed up with top travel experts to share the best tips for your journey.
Airlines
Delta

Delta offers free Wi-Fi for SkyMiles members on domestic flights, enhancing onboard connectivity.


Delta's Sky Priority check-in benefits elite status and premium cabin passengers for faster service.

Read more about Deltaby Stefanie Waldek
United Airlines

United's Economy Plus offers up to six inches more legroom than standard economy seats.


United's Priority Boarding can be purchased to ensure overhead bin space, placing you in Zone 2.

Airports
IAD

For a smooth departure from IAD, plan your route using the airport map to navigate between terminals efficiently.

Read more about IADby Stefanie Waldek
SLC

Use TRAX light rail for a cost-effective 20-minute ride from SLC to downtown Salt Lake City.

Read more about SLCby Harriet Baskas
Our travel experts
Stefanie Waldek

Stefanie Waldek

Expert on Delta, United Airlines and IAD

Stefanie Waldek

Stefanie Waldek

Stefanie Waldek is a freelance space, travel, and design writer based in Saratoga Springs, NY. Her words have appeared in Space.com, Travel + Leisure, Condé Nast Traveler, Architectural Digest, and House Beautiful, among other publications. An expert in aviation and expedition cruising, Stefanie is frequently up in the air or on the sea, likely en route to Antarctica or the Arctic.

Read more
Harriet Baskas

Harriet Baskas

Expert on SLC

Harriet Baskas

Harriet Baskas

Harriet is an award-winning journalist who is happiest in an airport or an unusual museum. Her stories about airports, air travel, and the business of travel have appeared on NBC News, CNBC, USA TODAY, The Points Guy and other outlets. She is the creator of the StuckatTheAirport.com blog and the author of nine books. When not out on the road or exploring the latest airport amenities, she’s home in Seattle getting ready for the next adventure.

Read more

Good to know

Low seasonJanuary
Cheapest flight$145
Best time to beat the crowds but there is an average 5% increase in price.
Most popular time to fly and prices are also 24% lower on average.
Flight from Washington Dulles Airport to Salt Lake City

When to book flights from Dulles Intl to Salt Lake City

Are your dates flexible? Find out the best times to travel from Dulles Intl to Salt Lake City based on our flight data from the last year. Discover the cheapest month and even day to fly.
Estimated round-trip price
KAYAK looks at all historical flight data for each date to provide a predicted price for one-way trips or round-trips with a duration up to 40 days. While we try to provide actual minimum prices for each date, some prices are predictions and actual prices may differ.

FAQs for booking Washington Dulles Airport to Salt Lake City flights

  • What is the cheapest flight from Washington, D.C. Dulles Intl Airport to Salt Lake City?

    In the last 3 days, the lowest price for a flight from Washington, D.C. Dulles Intl Airport to Salt Lake City was $145 for a one-way ticket and $269 for a round-trip.

  • Do I need a passport to fly between Washington Dulles Airport and Salt Lake City?

    A passport is not required to fly from Washington Dulles Airport to Salt Lake City.

  • Which airports will I be using when flying from Washington Dulles Airport to Salt Lake City?

    Washington Dulles Airport and Salt Lake City are both served by 1 main airport. You will leave Washington Dulles Airport from Washington, D.C. Dulles Intl and will be arriving at Salt Lake City.

  • Which airlines offer Wi-Fi service onboard planes from Washington Dulles Airport to Salt Lake City?

    Delta, Hawaiian Airlines, American Airlines, and Alaska Airlines offer inflight Wi-Fi service on the Washington Dulles Airport to Salt Lake City flight route.

  • Which aircraft models fly most regularly from Washington Dulles Airport to Salt Lake City?

    The Airbus A321neo is the aircraft model that flies most regularly on the Washington Dulles Airport to Salt Lake City flight route.

  • Which airline alliances offer flights from Washington Dulles Airport to Salt Lake City?

    oneworld, Star Alliance, and SkyTeam are the airline alliances operating flights between Washington Dulles Airport and Salt Lake City, with oneworld being the most commonly used for this route.

  • On which days can I fly direct from Washington Dulles Airport to Salt Lake City?

    There are nonstop flights from Washington Dulles Airport to Salt Lake City on a daily basis.

  • Which is the best airline for flights from Washington, D.C. to Salt Lake City, Southwest or Alaska Airlines?

    The two airlines most popular with KAYAK users for flights from Washington, D.C. to Salt Lake City are Southwest and Alaska Airlines. With an average price for the route of $517 and an overall rating of 8.0, Southwest is the most popular choice. Alaska Airlines is also a great choice for the route, with an average price of $485 and an overall rating of 8.0.

  • How does KAYAK find such low prices on flights from Washington Dulles Airport to Salt Lake City?

    KAYAK is a travel search engine. That means we look across the web to find the best prices we can find for our users. With over 2 billion flight queries processed yearly, we are able to display a variety of prices and options on flights from Washington Dulles Airport to Salt Lake City.

  • How does KAYAK's flight Price Forecast tool help me choose the right time to buy my flight ticket from Washington Dulles Airport to Salt Lake City?

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to Salt Lake City from Washington Dulles Airport is likely to change within 7 days, so travelers know whether to wait or book now.

  • What is the Hacker Fare option on flights from Washington Dulles Airport to Salt Lake City?

    Hacker Fares allow you to combine one-way tickets in order to save you money over a traditional round-trip ticket. You could then fly to Salt Lake City with an airline and back to Washington Dulles Airport with another airline. Booking your flights between Washington Dulles Airport and SLC can sometimes prove cheaper using this method.

  • What is KAYAK's "flexible dates" feature and why should I care when looking for a flight from Washington Dulles Airport to Salt Lake City?

    Sometimes travel dates aren't set in stone. If your preferred travel dates have some wiggle room, flexible dates will show you all the options when flying to Salt Lake City from Washington Dulles Airport up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

KAYAK’s top tips for finding a cheap flight from Washington, D.C. Dulles Intl Airport to Salt Lake City

  • Looking for a cheap flight? 25% of our users found flights on this route for $175 or less one-way and $334 or less round-trip.

Prefer to fly direct from Washington Dulles Airport to Salt Lake City?

 
Direct data is based off flight results for the next 60 days. Find direct flights from all airlines flying direct from Washington, D.C. Dulles Intl to Salt Lake City.
Find which airlines fly direct from Washington, D.C. Dulles Intl Airport to Salt Lake City Airport, which days they fly and book direct flights.

Direct departures

Washington, D.C. Dulles Intl to Salt Lake City

Monday

Delta, United Airlines

Delta, United Airlines

Tuesday

Delta, United Airlines

Delta, United Airlines

Wednesday

Delta, United Airlines

Delta, United Airlines

Thursday

Delta, United Airlines

Delta, United Airlines

Friday

Delta, United Airlines

Delta, United Airlines

Saturday

Delta, United Airlines

Delta, United Airlines

Sunday

Delta, United Airlines

Delta, United Airlines

See more direct flights

Direct returns

Salt Lake City to Washington, D.C. Dulles Intl

Monday

Delta, United Airlines

Delta, United Airlines

Tuesday

Delta, United Airlines

Delta, United Airlines

Wednesday

Delta, United Airlines

Delta, United Airlines

Thursday

Delta, United Airlines

Delta, United Airlines

Friday

Delta, United Airlines

Delta, United Airlines

Saturday

Delta, United Airlines

Delta, United Airlines

Sunday

Delta, United Airlines

Delta, United Airlines

See more direct flights

Reviews of the top 5 airlines serving from Dulles Intl to Salt Lake City

 
See real verified KAYAK customer reviews for airlines flying from Washington, D.C. to Salt Lake City. Airline scores are aggregated from all reviews left by passengers on KAYAK after flying with an airline. KAYAK doesn’t show reviews that are older than 5 years. Learn how KAYAK collects reviews.
Need help choosing which airline to fly with from Dulles Intl to Salt Lake City? KAYAK airline reviews give an overall score for each airline based on loads of factors, including comfort, boarding, in-flight entertainment and more, to make your decision easier. See airline scores according to verified KAYAK customer reviews.
8.0
SouthwestOverall score based on 4241 reviews
7.0Food
8.0Comfort
7.5Entertainment
8.6Crew
8.1Boarding
Airline reviews

Ever since Southwest starting charging for bags, passengers don't want to pay to check their bags, so the gate agents have to beg people to check their roller bags now because there's "not enough space". This was a terrible business move by Southwest.

8.0 ExcellentGreg, Oct 2025OAK - BUR
Read more Southwest reviews

Ever since Southwest starting charging for bags, passengers don't want to pay to check their bags, so the gate agents have to beg people to check their roller bags now because there's "not enough space". This was a terrible business move by Southwest.

Full cans of soda would be nice. A choice between two snacks would be appreciated.

Tried watching free movie and it kept freezing so I couldn’t finish.

All was good. I just had a hard time getting connected to the WiFi/internet during the flight

Sacrament staff are always polite and helpful. Airport is easy to maneuver and boarding is straightforward.

Great flight. Outstanding Service. Southwest was able to put us on a direct flight to Denver when the connection could have been affected by a later arrival to Baltimore. The direct flight was less expensive that the flight with the connection in Baltimore.

Delays delays delays. Late taking off, late landing, wait for a gate, etc.

Boarded on time but once we were ready for take off, the crew determined that, although every seat was taken, somehow someone was on the wrong flight. Delay, delay delay, announcements and ended up with one person checking EVERY ID against their passenger Manifest only to figure out it was a "clerical error." We departed 54 minutes late causing me to run in the St. Louis Airport to make my connection and lose the priority boarding spot I had paid for. Unnecessary delay.

I was re-booked onto another flight because my original flight was delayed and I would have missed my connector. I ended up in the “C” group after paying extra to be in the “A “ group on the original flight. At least if you’re going to re-book people, re-book them into the same group.

Flight was delayed due to plane not passing inspection And one of the crew had to time out and we had to wait for another one A 3 hour delay

Staff were friendly and happy. Delta could make sure passengers that don't have the app know of changes. Without Kayak I would not have known about the change of gate or the delay. Kayak was faster to notify me.

They ended up paying for the bag twice, but the counter wouldn't take my baggage receipt. Left it to me to resolve. Not sure how to resolve the issue.

The customer service before board was very rude and when I expressed my concerns about making the connecting flight she laughed and told me I bought the wrong ticket. I explained once it showed the flight was delayed it no longer let me change seats or anything. I was trying to upgrade to make sure I would get to the next gate on time.

Non stop on long haul is the way to go. Great experience

The flight used a B767 with a very old interior from before 2014. The entertainment system did not work at all during the flight despite attempts to reset the system. It was like they flew this route just to be competitive.

They changed planes and the new plane couldn’t carry enough fuel to fly across the country so we had to stop in Kansas City to refuel. Flight was delayed .

Flight was too crowded and seats are too small, especially since passengrs are getting larger. Having a middle seat is ALWAYS tough! Woman on my left was large & kept creeping in to my space. Flight personnel were great! Have more savory rather than sweet snacks please.

Flight was crowded and the woman sitting on my left was large & kept crouching in to my space. You need bigger seats or smaller passengers to fit into the seats you DO have! Snack were OK. Would appreciate if airlines had more savory rather than sweet snacks, thank you!

Delayed flight (1hour) plus a long layover after an overnight flight with no backup plane available.

We were delayed, which I think had to do with air traffic control. Otherwise, everything was great.

During booking, I kept trying submitting my payment from the Mexican website and it didn't work. After I had the idea to change it to the Canadian website, it worked but I had to be charged the equivalent of 50 CAD more. I received the clear instruction that I would only be able to check-in at the airport and that it was impossible to select a seat 24 hours before departure, that I had to pay 144 CAD to do so, although not only was I able to check-in 24 hours before departure, but I could have selected my seats for free then. All in all, I almost threw $200 out the window due to misleading information. Besides, the app kept crashing, the information to get to the gate on the app was inaccurate, my gate was switched and I was only informed once in the air (luckily I had noticed the departure pannel), I was not addressed in my language beforehand and even if I tried I was immediately answered in English (which meant the crew understood but didn't want to answer accordingly), there was only one snack & beverage service on my medium haul flight and no beverage service on my short haul flight. To be fair, the planes were comfortable, the crew apart from the language issue was helpful, dynamic and engaging, the plane was clean and the directions were clear and direct. United has a lot of potential to be one of my favourite airlines, but the devil is in the details and a lot of them missed the target.

Better WiFi. I cannot understand that in 2025, United is so behind on a technology that is now a necessity and still painfully unreliable, slow and keeps disconnecting.

Great service on board. Boarding a bit slow due to process. Food was pretty average.

Very small cramped plane for an international flight. Everything else was good, but it was maybe the smallest comfort-wise I've ever been on for longer than 3-4 hours and the trip was 7.5

Flight was delayed 3 hours. No food and drink vouchers was provided. They offered a mini pretzel bag and water .

Staff was rude. Didn’t give water for 2 hours. Worst service

Was on time until within 1 hour of flight-how does that happen? Staff very friendly.

I liked the choice of lemon ginger tea. I think stewardesses can be more considerate of older people needs.

We were given vouchers we couldn’t use with a 5.5 hour delay

I fly UAL 7-8 times per year. This flight was not up to snuff because it boarded very late "due to unexpected delays in restocking the plane" and yet Flight Aware showed the plane had landed some 10 hours earlier--so I think they could have planned accordingly. The FA's were nice but harried. The video system had to be rebooted 3-4 times. The food service was rather abrupt; they forgot my row and when I asked for my meal, they brought it with some impatience. Overall, the flight was fine, but the little details made it feel somewhat mundane and hurried.

Wish some foods provided rather than just biscuit/cookie for flight more than 2 hours

Wish a flight with more than 2 hours with some snack rather than just cookie/biscuit.

The flight attendant, a black woman with curly hair who sat near Row 21, was wonderful and kind.

It was good..clean, comfy seat. Friendly warm welcoming crew. Was able to check my cabin luggage at the gate which I was able to pickup in a decent time from baggage claim. The app gave all updates from delays to baggage claim info. Overall smooth flight.

Flight was delayed leaving Dallas. Arrived about 2 hours later than scheduled.

Flight delayed and missed connection. Rescheduled flight cancelled after 6 hrs wait. Rerouted thru ORD, flight cancelled, overnight stay in ORD. Still in the air on new flight!

The flight was fine. This survey is not. There is no option for N/A so items which don’t apply to my experience still must be rated. In those instances I give a “3” rating which ultimately skews the results.

It took way too long to diagnose and solve the problem of a broken crew member cabin seat. Though compensation for the volunteer who left the flight was very kind.

We fly American Airlines quite a bit. And we always fly business class when traveling internationally. We were a bit disappointed with the comfort of this particular plane as well as the entertainment options.

The AA staff person who checked our bags was curt and almost rude. The FA also seemed unhappy doing her job. Overall it was like riding the school bus back in grade school.

Terrible. The canceled my entire flight when I requested a refund for a trip frontier canceled trip one way.

Boarding was on time and plane departed as scheduled. There are obviously no amenities (food, drink, entertainment) on Frontier, but there also didn't seem to be any issues with luggage space either.

Inbound plane was on time and flight departed on time with no issues while boarding.

I knew going into this that Frontier, being a low cost carrier, would be pretty bare bones and charge for most extras but this was made up for by the fact that the airplane was a reasonably new Airbus, every employee was great and best of all, Everett Washington is an amazing airport - thanks Frontier for flying there!!!

i was unable to check in the flight. refund requested

It was well done. It was my first time flying with them and I was nervous b/c I have heard of many cancelled and/or delray flights. Everything went smoothly.

Just know that everything, and I mean everything is “ala cart”. 60$ just to put something in the overhead bin. I will never fly Frontier again nor do I recommend them to anyone else.

The single worst check in experience I could imagine. I’ll never do any business with Frontier or any affiliated company

Too many extra fees, uncomfortable, little leg room. Will not recommend this airline.

Everyone seemed to be in zone 1 for boarding. Maybe break it up a little. Otherwise, smooth flight.

Everything you need to know for your flight from Dulles Intl to Salt Lake City

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