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 10/31. 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

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, as well as popular online travel agencies
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, as well as popular online travel agencies
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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

Thu, Nov 13 - Sun, Nov 16
United Airlines Logo
5:55 pm - 8:55 pmIAD-SLC
5h 00mnonstop
United Airlines Logo
10:09 am - 4:07 pmSLC-IAD
3h 58mnonstop
$269United Airlines
Find Deal
Sat, Sep 27 - Wed, Oct 1
Frontier Logo
1:02 pm - 10:14 amIAD-SLC
23h 12m2 stops
Frontier Logo
1:42 pm - 9:17 amSLC-IAD
17h 35m2 stops
$271Frontier
Find Deal
Thu, Oct 16 - Thu, Oct 23
Multiple Airlines Logo
6:25 am - 1:07 pmIAD-SLC
8h 42m1 stop
Multiple Airlines Logo
8:58 pm - 9:09 amSLC-IAD
10h 11m1 stop
$275Multiple Airlines
Find Deal
Mon, Oct 27 - Wed, Oct 29
Multiple Airlines Logo
10:04 am - 8:04 pmIAD-SLC
12h 00m1 stop
Multiple Airlines Logo
7:13 pm - 5:13 pmSLC-IAD
20h 00m1 stop
$276Multiple Airlines
Find Deal
Tue, Nov 4 - Tue, Nov 18
Southwest Logo
5:45 pm - 10:15 pmIAD-SLC
6h 30m1 stop
Southwest Logo
5:45 am - 5:05 pmSLC-IAD
9h 20m1 stop
$277Southwest
Find Deal
Thu, Nov 13 - Tue, Nov 18
Southwest Logo
5:50 pm - 11:30 pmIAD-SLC
7h 40m1 stop
Southwest Logo
5:30 am - 3:45 pmSLC-IAD
8h 15m1 stop
$283Southwest
Find Deal
Sat, Jan 24 - Tue, Jan 27
Delta Logo
6:00 am - 12:50 pmIAD-SLC
8h 50m1 stop
Delta Logo
1:50 pm - 11:35 pmSLC-IAD
7h 45m1 stop
$289Delta
Find Deal
Tue, Oct 21 - Sat, Oct 25
American Airlines Logo
10:25 am - 8:51 pmIAD-SLC
12h 26m2 stops
American Airlines Logo
12:25 pm - 11:53 pmSLC-IAD
9h 28m2 stops
$299American Airlines
Find Deal
Thu, Oct 23 - Tue, Oct 28
Delta Logo
6:15 am - 8:51 amIAD-SLC
4h 36mnonstop
Delta Logo
5:40 pm - 11:33 pmSLC-IAD
3h 53mnonstop
$304Delta
Find Deal
Wed, Feb 11 - Sun, Feb 15
American Airlines Logo
6:30 am - 6:01 pmIAD-SLC
13h 31m2 stops
American Airlines Logo
5:25 am - 4:05 pmSLC-IAD
8h 40m1 stop
$318American Airlines
Find Deal

Everything you should know

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
United Airlines
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
4 weeks
in advance
Our data shows that travelers who book at least 4 weeks in advance save around 23% compared to booking last minute.
Insights
Insights
Insights
Insights
When to travel
July
Cheapest • 26% price drop
July
Most popular
Good to know
Good to know
+1
+1
Good to know
Good to know
+1
Cheapest round-trip
$269
Overall average: $582
United Airlines
Thu 11/13Sun 11/16
IAD - SLC • Non-stop
Cheapest non-stop
$269
Typical prices: $499-784
United Airlines
Thu 11/13Tue 11/18
IAD - SLC • Non-stop
Start a new search
KAYAK searches 100s of sites at once to find you the best travel deals.
We hope you love your trip to Salt Lake City!
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
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 $647 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.

No, with an average price for the route of $371, prices are generally cheapest when you fly direct.

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 4 weeks before departure, which saves you about 23% compared to booking last minute. For the absolute cheapest price, our data suggests you should book 5 weeks before departure.

Good to know

Low seasonNovember
Cheapest flight$145
Best time to beat the crowds but there is an average 19% increase in price.
Most popular time to fly and prices are also 27% 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, Alaska Airlines, and American 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 Boeing 737-900 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?

    SkyTeam, and Star Alliance are the airline alliances operating flights between Washington Dulles Airport and Salt Lake City, with SkyTeam 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 Delta?

    The two airlines most popular with KAYAK users for flights from Washington, D.C. to Salt Lake City are Southwest and Delta. With an average price for the route of $528 and an overall rating of 8.0, Southwest is the most popular choice. Delta is also a great choice for the route, with an average price of $509 and an overall rating of 7.9.

  • 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 $224 or less one-way and $359 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 4242 reviews
8.0Comfort
7.5Entertainment
7.0Food
8.6Crew
8.1Boarding
Airline reviews

I wish they had movie screens in the headrests. The seats are much improved, more legroom and recently renovated. Bathroom was clean. Staff was outstanding!!

10.0 ExcellentG, Sep 2025LAS - ATL
Read more Southwest reviews

I wish they had movie screens in the headrests. The seats are much improved, more legroom and recently renovated. Bathroom was clean. Staff was outstanding!!

As always, the entire Southwest experience was wonderful, from online booking to flight to baggage retrieval. Very grateful.

The weather could have been better. There was a 40 minute ATC delay in SFO because of marine fog and a micro cell storm delayed landing and take-off at Nashville. The gate was changed 5 minutes from boarding from gate B3 to gate C23 at Nashville airport.

After being assaulted by a flight attendant I was then brushed off as oh well because he long braids didn’t mean to whip me in the eye. I have filed complaints and will see. But like any other issue I’ve had with kayak involved it’s been trash. Last time I’ll be using your app

AC sub par. WiFi not working correctly. Ac sucked. Seats very narrow.

Near 4 hour flight with only 1 service. Had to use call button to request water. Internet and power not working until into flight. Internet would stop working during flight.

Southwest's seats are the least comfortable I have ever sat in.

The cabin was quiet for the redeye flight. The area was clean. The staff was great. The 787 Max was in good condition. Drawbacks were that the seat widths were tight for some passengers. The seat padding was at best average and for a long flight uncomfortable.

Southwest like most American domestic airlines, is a mediocre airline. But it is among the cheapest. Oh well.

My flight was delayed 50 minutes and we were rushed to board to then sit for 15 minutes until the pilot arrived. Unacceptable since we could have waited to board. Also the delayed flight was updated AFTER we boarded to more than the 10 minutes as originally stated.

Perfect flight both ways. On time, courteous staff, plane comfortable and cool. Best domestic flights I’ve had in awhile.

Really low quality food especially for an international flight. The crew also was surprisingly unpleasant except couple of ladies. I know we were not in first class but that’s no reason to treat customers as less.

Flight delayed for two and half hours and then canceled altogether due to mechanical issues. No mechanic onsite to fix so had to send one from LAX.

Crew was good. The reservation got mixed up and they didn't have my TSA number. I am also a Silver Medallion and wasn't able to use Sky Priority.

Delta made it easy, comfortable and timely. The crew was fantastic.

This route with Delta always has delays or is cancelled. Aircrafts seem smaller and older. I fly Delta quite a bit - haven’t had issues with the international flights. But this route has always been the troublesome one

Three seats in first class were broken and while they were able to still acommodate us it was looking very touch and go and they had others they could not acommodate

Mechanic delay in addition to a 2 hour change in takeoff time was frustrating.

Delayed due to thunderstorms and no in-flight service due to rough weather — both of which are out of Delta’s control. Flight was good overall.

The flight attendants in SLC were rude. I arrived 40 minutes early to gate. Ticket said I needed check in for seat assignments and tried check in and attendants said they weren’t doing it. And proceeded to never call me to give me a ticket so when time to board I received the very last seat. Please relay to employees to do their job better..,

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.

I didn’t get on plane. Passport being processed by consulate with visa application. Tried to cancel through underpricer after purchasing cacelling for any reason. No dice, they are thieves.

When I booked it on Kayak it aaid that I wasn't allowed hamd luggage. I called United Airlines and it took them 6 minutes to figure out if I was allowed free hand luggage. Surely something that simple they should be able to tell me instantly.

Given it’s a red-eye into Charolotte, we didn’t get any food. The survey does not include “N/A” so the rating will be skewed.

Great. Quick and quiet and east. The breakfast choices were a welcome surprise!

American airlines suck they delay the flights all the time made me sleep in an airport because my flight was delayed and I miss my connecting flight

There's nothing I liked about it. For first off I scheduled this trip two weeks in advance then they delayed my flight which messed up my whole trip. So I scheduled it for the following weekend thinking there won't be a delay and guess what as soon as I got to the airport we said in the airplane on the tarmac for an hour and a half. Not only was it delayed I missed my connecting flight meaning I had to stay the night at Dallas-Fort Worth airport sleeping on the floor. I will tell you this I will never fly American airlines ever again I have had nothing but horrible experience with them and I just throw money at them

The stewardess hit me with the food kart twice on the head and didn't say I'm sorry once. The same stewardess gave me a warm Apple Juice with No ice. The Flight was delayed for Departure 6 times, starting from 2:36pm, finally taking off 7:50pm. I was late picking up my child from the sitter by 3 hours.

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.

They are still charging me after taking 466 and 833 for round trip from AR to to Bradley airport from 19 to 21. Then poor experience. Am hurt and I will say it on social media. Please stay away from this airline. I see in my bank account they are still taking 644. Am trying to stop it. I used to fly United airlines and I suggest that if you don't want extra charges and good service you go back there. American airlines delayed my flight again and I was late for my meeting, no recompensation but charging me over and over.

They changed our Gate 5 times, and concourse twice. Changed our seats twice.

Seats were new and comfortable. Staff was fine. Missed my connection due to weather -which wasn’t their fault- but got no help at all. Gate staff sent me to customer service, which was and stayed unstaffed. Sign with QR code directed me to call or chat. Chat was useless. Call was returned after an hour. No itinerary offered by Frontier could get me home in less than 30 hours. Rebooked with another airline and got a partial refund that came to about 10 percent of what I paid to get home.

Finally a Frontier on time and efficient. I've had problems before with your airline, but this time everything went fine.

The experience was good. No frills but I got there safe and sound and on time.

Great for the price. No wifi or entertainment, but gate agents and crew were fantastic and we boarded quickly and left on time.

sluggish boarding and arrival procedures, fake nice flight attendants, and lots of delays.

Disaster. They lied every step of the way. We ended up being delayed due to crew and then allegedly abandoned the flight because of a curfew at LGA. No rebooking to LGA at any reasonable time. No hotel. No meal vouchers. Had to sleep in the airport and fly to Newark instead. Will never fly Frontier again.

What I expected, nickeled and dined and a frontier flight attendant loudly complained about her job and lack of communication as she headed to the gate on her cell phone. Not professional.

As every law enforcement agency I could imagine surrounded the plane and we didn’t disembark for 2 hours and then had to stick around for another hour to go get our personal belongings after leaving them behind and being bused away from the plane, it was scary and inconvenient. We were given no information as to why this was happening. Lack of communication with passengers was disappointing.

After boarding and un-boarding twice over 6+hours, the flight was canceled.

Severe turbulence. Captain never came on to reassure passengers after things settled down.

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

Information on your arrival and departure airports

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