SLC - IAD

$165 Find Cheap Flights from Salt Lake City to Washington Dulles Airport - Compare and Save

This is the cheapest one-way flight price found by a KAYAK user in the last 72 hours by searching for a flight from Salt Lake City to Dulles Intl departing on 9/11. 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.
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1 adult, Economy, 0 bags

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Everything you should know

Cheapest round-trip
$297
Typical prices: $331-$493
Frontier
Fri 8/28Sat 9/5
SLC - IAD • 1 stop
Cheapest non-stop
$329
Typical prices: $298-$439
Delta
Fri 9/4Tue 9/15
SLC - IAD • Non-stop
Advice from real travelers
AI-powered summary based on content written by travel experts. AI can make mistakes.
Delta offers free Wi-Fi for SkyMiles members on domestic flights.
United Economy Plus adds up to six inches more legroom than standard economy.
Expert advice
Expert advice
Expert advice
Expert advice
Top airlines
Cheapest • from $297 (round-trip)
Best reviews • 8.0 score
Airline reviews
Airline reviews
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Airline reviews
Airline reviews
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Nonstop flights
You can fly direct with Delta and United Airlines. Average duration is 4h 10m
Direct flights
Direct flights
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Direct flights
Direct flights
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Top layover airports
Cheapest • Avg $281 (round-trip)
Shortest trip • 6h 26m (one-way)
Insights
Insights
Insights
Insights
When to book
in advance
Our data shows that travelers who book at least 3 weeks in advance save around 38% compared to booking last minute.
Insights
Insights
Insights
Insights
When to travel
Cheapest • 19% price drop
Most popular
Good to know
Good to know
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We hope you love your trip to Dulles Intl!
Flight Deals
Booking Insights
Expert advice
Flight Deals

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

 
Here are some of the best deals found on KAYAK recently from the most popular airlines for round-trip flights from Salt Lake City to Dulles Intl 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 Salt Lake City to Dulles Intl

Fri, Aug 28 - Sat, Sep 5
Frontier Logo
1:51 pm - 8:04 am
SLC
-
IAD
16h 13m
1 stop
Frontier Logo
8:59 am - 9:26 am
IAD
-
SLC
26h 27m
1 stop
$297Frontier
Tue, Sep 29 - Thu, Oct 8
Frontier Logo
1:38 pm - 6:20 am
SLC
-
IAD
14h 42m
1 stop
Frontier Logo
7:00 am - 12:24 am
IAD
-
SLC
19h 24m
2 stops
$304Frontier
Wed, Sep 16 - Sun, Sep 20
Frontier Logo
1:38 pm - 6:20 am
SLC
-
IAD
14h 42m
1 stop
Frontier Logo
9:04 pm - 3:21 pm
IAD
-
SLC
20h 17m
2 stops
$310Frontier
Fri, Sep 4 - Mon, Sep 7
Frontier Logo
1:51 pm - 8:04 am
SLC
-
IAD
16h 13m
1 stop
Frontier Logo
8:39 pm - 11:59 pm
IAD
-
SLC
29h 20m
2 stops
$317Frontier
Fri, Sep 4 - Tue, Sep 15
Delta Logo
5:40 pm - 11:39 pm
SLC
-
IAD
3h 59mnonstop
Delta Logo
7:00 am - 9:34 am
IAD
-
SLC
4h 34mnonstop
$329Delta
Fri, Sep 18 - Fri, Sep 25
United Airlines Logo
10:00 am - 4:19 pm
SLC
-
IAD
4h 19mnonstop
United Airlines Logo
6:00 pm - 8:58 pm
IAD
-
SLC
4h 58mnonstop
$339United Airlines
Fri, Sep 4 - Mon, Sep 7
United Airlines Logo
9:21 am - 3:40 pm
SLC
-
IAD
4h 19mnonstop
United Airlines Logo
6:00 pm - 8:58 pm
IAD
-
SLC
4h 58mnonstop
$339United Airlines
Fri, Sep 4 - Sun, Sep 6
Delta Logo
5:40 pm - 11:39 pm
SLC
-
IAD
3h 59mnonstop
Delta Logo
7:00 am - 9:39 am
IAD
-
SLC
4h 39mnonstop
$339Delta
Tue, Oct 6 - Sat, Oct 10
United Airlines Logo
9:45 am - 4:04 pm
SLC
-
IAD
4h 19mnonstop
United Airlines Logo
6:00 pm - 8:58 pm
IAD
-
SLC
4h 58mnonstop
$339United Airlines
Sat, Sep 5 - Wed, Sep 9
Delta Logo
2:00 pm - 7:59 pm
SLC
-
IAD
3h 59mnonstop
Delta Logo
7:00 am - 9:34 am
IAD
-
SLC
4h 34mnonstop
$339Delta
Booking Insights

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

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

How much is a round-trip flight from Salt Lake City to Washington, D.C. Dulles Intl Airport?

This analysis is based on the cheapest round-trip price found on KAYAK in the last 12 months by searching for a flight from Salt Lake City to Washington, D.C. Dulles Intl Airport departing in August.

Flight prices are below average for this route right now.

Flights to Washington, D.C. Dulles Intl Airport from Salt Lake City usually cost between $361 and $546 in August.
The lowest price found in the past 5 days was $297 on Frontier (Aug 28-Sep 5).

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

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

If you are looking for a flight deal from Salt Lake City to Washington Dulles Airport, look for departures on Fridays and avoid leaving on a Sunday, as it's usually the priciest day. When flying back from Washington Dulles Airport, Tuesday is the cheapest day to fly and Sunday is the most expensive.

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

To calculate monthly average prices, KAYAK takes all prices for each month over the last year for round-trip flights from Salt Lake City to Washington, D.C. Dulles Intl Airport, 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 Salt Lake City to Washington, D.C. Dulles Intl Airport is March, where tickets cost $314 (return) on average. On the other hand, the most expensive months are June and July, where the average cost of round-trip tickets is $498 and $443 respectively.

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

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 2 stops layover the cheapest option at $404 on average.

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

To calculate weekly average prices, KAYAK takes all prices for each week before departure over the last year for round-trip flights from Salt Lake City to Washington, D.C. Dulles Intl Airport, 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 Salt Lake City to Washington, D.C. Dulles Intl Airport, you should book around 3 weeks before departure, which saves you about 38% compared to booking last minute. For the absolute cheapest price, our data suggests you should book 15 weeks before departure.

Expert advice

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

 
AI-powered summary based on content written by travel experts. AI can make mistakes.
KAYAK teamed up with top travel experts to share the best tips for your journey.
Our travel experts
Stefanie Waldek

Stefanie Waldek

Expert on United Airlines, Delta and IAD

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.

Harriet Baskas

Harriet Baskas

Expert on SLC

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.

Good to know

Low season

February

Cheapest flight

$165
Best time to beat the crowds with an average 14% drop in price.
Most popular time to fly with an average 10% increase in price.
Flight from Salt Lake City to Washington Dulles Airport

When to book flights from Salt Lake City to Dulles Intl

Are your dates flexible? Find out the best times to travel from Salt Lake City to Dulles Intl 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 Salt Lake City to Washington Dulles Airport flights

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

    In the last 5 days, the lowest price for a flight from Salt Lake City to Washington, D.C. Dulles Intl Airport was $165 for a one-way ticket and $297 for a round-trip.

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

    No

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

    All the following airlines offer inflight Wi-Fi service on the Salt Lake City to Washington Dulles Airport flight route: Delta, JetBlue, American Airlines, Air France, Virgin Atlantic, and KLM.

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

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

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

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

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

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

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

    The two airlines most popular with KAYAK users for flights from Salt Lake City to Washington, D.C. are Southwest and Delta. With an average price for the route of $382 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 $427 and an overall rating of 7.8.

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

    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 Salt Lake City to Washington Dulles Airport.

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

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to Washington Dulles Airport from Salt Lake City 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 Salt Lake City to Washington Dulles Airport?

    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 Washington Dulles Airport with an airline and back to Salt Lake City with another airline. Booking your flights between Salt Lake City and IAD 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 Salt Lake City to Washington Dulles Airport?

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

  • Looking for a cheap flight? 25% of our users found flights on this route for $303 or less one-way and $372 or less round-trip.

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

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

Direct departures

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

Direct returns

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

Reviews of the top 3 airlines serving from Salt Lake City to Dulles Intl

 
See real verified KAYAK customer reviews for airlines flying from Salt Lake City to Washington, D.C.. 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 Salt Lake City to Dulles Intl? 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 4228 reviews
8.1Boarding
7.5Entertainment
8.0Comfort
7.0Food
8.6Crew
Airline reviews

No wifi, seems to be very common with Southwest currently. Everything else was normal.

8.0 ExcellentSean, Jul 2026
HOU - LGB
Read more Southwest reviews

No wifi, seems to be very common with Southwest currently. Everything else was normal.

For the first time in a long time we had a flawless experience with Southwest. Both flights were early and no mechanical errors at all. We were shocked and pleasantly surprised 😮.

The flight was delayed about 20 minutes, but this was an evening flight, so it comes as no surprise. This flight came a good 1.5 days ahead of hurricane Helene which was still far out in the gulf. However, the flight never removed the seated buckle light. The staff announced from the beginning that due to the bad weather (I suppose the hurricane a day and a half away) they would have to do an abbreviated service with water and a snack. I am fine with their water and snack offering, but this was one of the smoothest flights I've had in years. If Southwest believes a flight like this requires everyone to remain seated, then all of their flights should remain buckled for the entire flight. I cannot help but wonder if things like this are a sneaky way to cut back on expenses since the airline is currently under a lot of pressure to reduce costs.

Although the flight was delayed, but the crew was amazing. They did the best they could to make the time enjoyable.

My experience was find with Southwest. The only issue I have is...at the exact time for me to check in...I don't understand how I always end up in C.

I stopped flying southwest a long time ago. I don’t care for their boarding process, especially when I have a family to try and seat together. The early bird check in made it so much easier. As long as you do that, it’s great.

Everything was very good. I will fly Southwest again soon!

Nice and easy. You can't go wrong with the value and quality or Southwest.

Flight was cancelled due to “inclement weather” even though all other carriers continued to operate as planned.

sw cancelled our flight 2 hours before we were to leave. Our bags were already checked. Only communication we had was a text that had a link to reschedule that did not work. When we finally got to front of line ticket agent said they could not get us on a flight until Wednesday. This was Sunday. 3 days. The. They stated since it was “weather” related they would not give us vouchers for food, hotel stay anything. So we had to book on a different airline costing us an extra $1000. Unacceptable.

We never made it on this flight because we missed our connection due to o delayed flight from Jackson.

Average seat comfort, a drink and chips were provided, early boarding because we checked a carryon at the gate was nice. Ticket pricing shenanigans, including fees to pick a seat, check a bag, and get food onboard - evidence the industry is reinvigorating last century’s strategies- destroys the experience before one ever arrives at the airport. It’s difficult to recognize any value or sustain loyalty in the end-to-end process making air travel more drudgery than pleasure.

Everything was great until I lost my water bottle and they can’t seem to locate it. I know I left it on the plane though.

Smaller plane for a longer flight than my first one. Doesn’t make sense.

Delta needs to step its game up get a more reliable internet service. Internet service was non-existent for this flight.

NEVER MADE THE FLIGHT BECAUSE DELTA SAID THEY CAN NOT

Another late night flight and MORE men belligerently drinking and yelling. I had to move from first to economy because they were so obnoxious and disruptive. Crazy to go from a cozy chair to cardboard when you were supposed to be in first. Delta allows was too much drinking which leads to belligerent behavior.

Flight was warm for first few hours and quite rough

Because I was moved to an exit row, the snacks in economy comfort, the selection of snacks was better.

1st flight had mechanical issues after we boarded and almost took off. They tried to fix on runway but couldn’t do we went back to the gate. They couldn’t fix it there either. So we had to deplane and board another plane 2 hrs later. All in all our flight was delayed 4 hrs so we had to cancel some business meeting we had in London for the morning since we were supposed to arrive at 7am and did not arrive until 11:45am. Also, the 2nd plane had mechanical issues as well but fortunately they were able to fix on runway.

Our flight was great with an unexpected upgrade. However, four days into our travel we are still without a piece of luggage. The bag tracker has not been accurate, the airline is not communicating with me or the luggage delivery service and no one is willing to take responsibility or guarantee any kind of support or reimbursement. Unfortunately, we do not have the option to easily shop to replace items as we are currently on a cruise. I have been very disappointed by United Airlines response.

It was terribly delayed with zero support from united airlines. I reached at 1 am in the night. They did not provide any option to change the flights.

Flight was delayed 14 hours due to DC air show and weather. Missed connection to MUC.

Horrible I am at almost 2,000,000 miles on United. This was probably the worst flight ever. An hour and a half before takeoff I get a message that they’re changing the plane and I no longer have a seat in Polaris business Supposedly, there was a problem with the plane, but then there was no other plane Finally, they decided to bring a plane from Newark to Washington Dulles Of course the original flight was at 10:45 PM so by the time the plane got there it was 12:30 AM. It had not been cleaned. It had not been catered. They don’t really have people available to do those things when it’s not pre-programmed at 1 o’clock in the morning. The crew had to be changed And the new plane held 28 fewer people than the scheduled plane There is no way you can hate United Airlines enough The people at the gate were actually just fine, but it was management who was completely useless And did they send extra help to the people at the gate? Did they send supervisors? Of course not. Just don’t take United find somebody else or buy a boat

MY FAMILY'S LUGGAGE WAS LOST FROM ROME TO BARI. I WAS THE ONLY ONE THAT RECEIVED MY LUGGAGE FROM ROME TO BARI. AFTER DEPLANING IN BARI, WE WASTED A LOT OF TIME AT BAG CLAIMS LOST AND FOUND REPORTING THE CLAIM AND PLEADING FOR THE BAGS TO BE DELIVERED THE NEXT DAY. WE WERE TOLD THAT IT TAKES 3 DAYS MINIMUM TO DELIVER. MY DAUGHTER AND MY GIRLFRIEND NEEDED THEIR PERSONAL THINGS AND WE WERE STAYING 3 HOURS AWAY FROM THE BARI AIRPORT. WE HAD TO DRIVE 3 HOURS TO THE AIRPORT TO COLLECT OUR LOST LUGGAGE THE NEXT DAY. WE ARE NOT HAPPY WITH THE EXPERIENCE

Our flight to Rome, Italy was cancelled the day of and we were never informed. We only found out because I was trying to get into my husbands account and called to get his account number. Had to pay more for worse seating on another airline.

We were a little disappointed to not be able to complete check in online without uploading pics of passports. Also we have KTN's and they weren't on our boarding passes when we got to security. Had to trek back to counter to have them fix.

Excellent service in Polaris class IAD to ZRH. Arrived rested and well fed after the overnight flight.

It's a short hop. My carryon was checked at the gate, I didn't have to drag it all over the airport. Excellent wheelchair assist.

Was great in general, try to respect time and excuses when slight changes have been made, appreciated!

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

Information on your arrival and departure airports