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 4/21. 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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41.299.237 searches in the past 7 days on KAYAK

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Everything you should know

Cheapest round-trip
$283
Overall average: $547
Alaska Airlines
Mon 3/9Tue 3/17
IAD - SLC • 1 stop
Cheapest non-stop
$303
Typical prices: $342-$553
United Airlines
Thu 5/28Sun 5/31
IAD - SLC • Non-stop
Our travelers' advice
AI-powered summary based on content written by travel experts. AI can make mistakes.
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
Alaska Airlines
Cheapest • from $283 (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 28% compared to booking last minute.
Insights
Insights
Insights
Insights
When to travel
November
Cheapest • 18% price drop
July
Most popular
Good to know
Good to know
+1
+1
Good to know
Good to know
+1
Start a new search
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We hope you love your trip to Salt Lake City!
Flight Deals
Booking Insights
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, Mar 9 - Tue, Mar 17
Alaska Airlines Logo
7:05 am - 2:26 pm
IAD
-
SLC
9h 21m
1 stop
Alaska Airlines Logo
7:08 am - 5:27 pm
SLC
-
IAD
8h 19m
1 stop
$283Alaska Airlines
Sat, Feb 21 - Thu, Feb 26
United Airlines Logo
3:58 pm - 10:26 pm
IAD
-
SLC
8h 28m
1 stop
United Airlines Logo
7:30 am - 4:05 pm
SLC
-
IAD
6h 35m
1 stop
$284United Airlines
Thu, Feb 26 - Sat, Feb 28
Frontier Logo
6:52 pm - 3:13 pm
IAD
-
SLC
22h 21m
1 stop
Frontier Logo
4:20 pm - 10:30 am
SLC
-
IAD
16h 10m
2 stops
$287Frontier
Sat, Feb 28 - Sat, Mar 7
Southwest Logo
4:30 pm - 10:25 pm
IAD
-
SLC
7h 55m
1 stop
Southwest Logo
5:40 am - 5:25 pm
SLC
-
IAD
9h 45m
1 stop
$289Southwest
Thu, Feb 26 - Thu, Mar 5
Frontier Logo
6:52 pm - 3:13 pm
IAD
-
SLC
22h 21m
1 stop
Frontier Logo
2:13 pm - 7:24 am
SLC
-
IAD
15h 11m
2 stops
$291Frontier
Tue, Mar 17 - Tue, Mar 24
American Airlines Logo
11:30 am - 11:03 pm
IAD
-
SLC
13h 33m
2 stops
American Airlines Logo
2:08 pm - 10:53 pm
SLC
-
IAD
6h 45m
1 stop
$292American Airlines
Sat, Feb 21 - Mon, Feb 23
United Airlines Logo
5:43 pm - 8:50 pm
IAD
-
SLC
5h 07mnonstop
United Airlines Logo
7:30 am - 4:05 pm
SLC
-
IAD
6h 35m
1 stop
$293United Airlines
Tue, Feb 24 - Thu, Feb 26
Southwest Logo
9:05 am - 7:05 pm
IAD
-
SLC
12h 00m
2 stops
Southwest Logo
8:55 am - 6:20 pm
SLC
-
IAD
7h 25m
1 stop
$294Southwest
Thu, Apr 23 - Tue, Apr 28
Frontier Logo
9:51 am - 8:01 am
IAD
-
SLC
24h 10m
2 stops
Frontier Logo
9:59 pm - 7:27 am
SLC
-
IAD
31h 28m
1 stop
$295Frontier
Sat, Feb 28 - Fri, Mar 6
United Airlines Logo
2:12 pm - 7:15 pm
IAD
-
SLC
7h 03m
1 stop
United Airlines Logo
11:40 pm - 5:39 am
SLC
-
IAD
3h 59mnonstop
$297United Airlines
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 Monday 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 November, where tickets cost $344 (return) on average. On the other hand, the most expensive months are March and April, where the average cost of round-trip tickets is $547 and $499 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 $422, 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 3 weeks before departure, which saves you about 28% compared to booking last minute. For the absolute cheapest price, our data suggests you should book 4 weeks before departure.

Expert advice

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

 
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 Delta, United Airlines 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 seasonDecember
Cheapest flight$145
Best time to beat the crowds but there is an average 10% increase in price.
Most popular time to fly and prices are also 15% 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 $283 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, Alaska Airlines, JetBlue, and Hawaiian 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 $433 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 $263 or less one-way and $360 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 4267 reviews
8.6Crew
8.1Boarding
7.0Food
7.5Entertainment
8.0Comfort
Airline reviews

All good except once again bags took an hour at Midway Airport Happens all the time. Ridiculous

10.0 ExcellentAnonymous, Jan 2026
PHX - MDW
Read more Southwest reviews

All good except once again bags took an hour at Midway Airport Happens all the time. Ridiculous

Everything went smoothly and we even arrived a little bit early.

Great vacation. Can't wait till next year for another one.

Great flight but super high price. Glad it was a business trip and not personal

On time. Friendly staff. Took to long to pre bord all the specialty groups. Cramped small plane

The seats were comfortable, and the boarding process was pretty smooth.

3 hour delay. Had to change plans and was still delayed.

The staff was very friendly, professional, and courteous. The overall flight was a great experience.

The crew canceled the complementary snack and drink in anticipation of turbulence that never materialized. I was counting on the drink (water) to take the the doses of medication - prescribed for my heart condition - that were due during the flight. Since no snack or meal was served on this flight, I cannot rate the food quality. Otherwise, this flight was excellent.

Departure was delayed more than 1/2 hour while we waited for luggage (only) transfer from another flight/plane. Once approved for takeoff, the flight was excellent.

Delta One is extraordinary. I fly business when somebody hires me. I just wonder why there is such a chasm between business class and the insanely inhumane and nonsensical coach. The seats are not large enough to fit even my tiny wife. We fly 10% of what we did because we don’t want to pay 5-10 k but for $400 it’s unbearable. It seems like the accountants took over and made stupid decisions. Screw in 20 extra seats and make it so unbearable that people fly 90% less. Just put the damn price up and put some proper chairs in. But business, yay.

Timing, quality of service, promptness and courtesy of the staff

It was last minute due to weather - considering - it was amazing! Good smiles, friendly staff and they were making sure we knew what was going on when and where.

delta last minute gave me a boarding pass for a different flight with no confirmation that they were changing it

The service from the flight attendants were of supreme quality. They greeted and treated everyone with a wide smile. This is totally absent nowadays. Kudos to them!!!!

Excellent flight and got us around tough weather. Only issue was seat TV did not work and crew tried to reboot.

Very large passenger too space from my own seat. Arm board couldn’t be lowered because of his size. It wads very uncomfortable trip, as the flight was full couldn’t move anywhere having back pain because of the position in which I was the entire flight.

was sitting in the jet bridge for 10 minutes in -20 degree weather waiting for my bag

Outdated equipment in disrepair, wifi inoperable. Broken seats, taped air vents, generally poor condition, the 717 showed its age and lack of upkeep.

My flight out of Baton Rouge to Atlanta was delayed by a half hour. This got us into Atlanta airport 30 minutes late. I ran through the airport to get to my connecting flight. As I approached the boarding gate, I saw the boarding door was still open and a passenger was being checked in. But when I got to the gate, the boarding agent told me they had already given away my seat and there were no empty seats on that flight. So I had to take a later flight. That has never happened to me before. Very frustrating.

Very good. Because of the delays with my previous flight, I missed my connection, but I was able to book another flight through the United app easily.

Was happy we finally got upgraded in 1st class. The seat getting old. The cushiness need some improvement.

Ineffective communication with United resulted in lost baggage. Their Baggage Tracing counter at MUC was shut down from 11:00-14:15 on my arrival. Undertrained, underinformed staff had me Running all over MUC to find someone to help me to no avail. Staff was rude, unhelpful, and unable to effectively use the systems they did have operational. They refused to contact United in any way or provide any accommodation or other resources while I waited for my luggage. This has destroyed my downstream itinerary. If they had even the slightest visibility I may have been able to reschedule/plan, but again, their staff provided nothing, and did nothing more than their website, which doesn’t even work on a standard phone browser. Miserable failure at all levels that weren’t associated with the operation of the aircraft.

Sat next to a one year old. She crawled all over the place and made me laugh.

The Crew and the food was the worst I ever had in Business Class. First they told us there were no space for carry on. It was plenty of space over our 2 row seats, we had to ask to let us travel with it which was accepted. They were aware that we had to run for the connection due to the previous flight delay. Have us one hour waiting for more customers and not even offer a glass of water. Then started the service and they started to serve other passengers drinks in business and did not offer any drinks until they serve our pre ordered meal and I ask for something to drink. I had to wait until they finished to serve all passengers until Inget something. The crew was the worts I ever had for Business Class in my life.

Not great experience - we were super late boarding due to issues with aircraft. Then when we finally all got onboard and seated and they started taxiing out to the runway they just stopped then turned around and went back to the airport. Apparently the crew “ran out of time” to legally fly us. They mentioned that they were about 2 minutes away from taking off. I understand the rules and safety but kinda wonder why they would have bothered boarding us in the first place? Had to go all the way back and de plane and then wait in a HUGE line to get a hotel (this is somewhere around 2:30am) finally got to hotel by Uber (no shuttle after 20min so gave up) and they ended up putting us all back on the same aircraft at 10am next morning so got about 2.5 hours sleep. They did give us. $250 credit, but it was a São Paulo Brazil flight out of Dulles. The flight and everything was fine.

Starlink wifi on the Embraer E175 is an excellent experience. I was able to connect and work from IAD all the way to approach into BTV.

7 hours delayed due to operational issues on United’s end. Basically laziness.

Short flight but an "eager to help" crew made the journey more enjoyable!

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.

Update to handle the delay was very bad, crews no smiles or welcome or thanks. Don’t care attitude

It would be nice to have some low carb options in the snacks.

I was trying to take 2 one and a half hour one way trips and I experienced almost 20 delays over the course of those two trips. Only a few of them were due to weather the rest was disorganization

It was a little concerning to hear the ground crew arguing with the flight crew over baggage space. Instead of taking them and checking them, they started checking for space in the first class cabin moving items around like the flight crew didn't know what they were doing. I was embarrassed for them.

delayed due to weather. Could not communicate with family since the wifi was broken

I got sick nothing contagious but distressing and the care I received by Kayla? Keighly the flight attendant will be memorable for ever. Thank You

We were told the flight was delayed 5 times, then it was moved to the next day.

Flight delay was communicated before leaving for airport which caused it to be a non-event. Great flight and crew!

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

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.

Very well recently! Frontier is improving and less harrassing customer on luggages! Positive!

Good for a budget airline! It was easy to get on, staff was really nice. Can’t say anything about the food or entertainment because it wasn’t available, which is fine.

I am writing to express my disappointment with my recent Frontier Airlines flight. I was charged $99 at the gate because my bag was said to be too large, yet once onboard there was no available overhead bin space, and I was required to place the bag under the seat in front of me anyway. This made the charge feel unnecessary and unfair. Additionally, before the flight even took off, I was asked to move from the seat I paid for into a middle seat so another passenger and her cat could have my seat to themselves. I was not offered compensation or an explanation for being moved from a paid seat. Between the unexpected bag fee and being forced to give up my seat, this experience fell well below acceptable customer service standards. I would appreciate a review of this situation and appropriate compensation.

It was costly and difficult to check in. $85 to take a small suitcase with me, carry on or checked and $75 on the return trip, Plus $25 if I didn't check my self in check in $25, because I couldn't do it on the kiosk. Small very uncomfortable seats, waited on the runway for near an hour each way. It was my worst flight to date.

It was ok. It was expensive to check 2 bags ($75.00 per bag), and then it took a long time to wait for shuttle to take us from one terminal to the terminal where the plane was taking off at LAX. And all of this for a flight where we had to pay for any food or drink that was not water.

It didn’t happen. I booked it and then was told it wasn’t available and then forced to pay far higher prices for a worse option

A 630departure flight Delayed 6hours! They changed my gate, I moved to the new gate. Had our flight on the screen for 12noon departure. I go get above to eat, check screen again and the flight was gone, no notice no announcement, nothing!! They sent my bag on the flight I wasn’t on, got it back to me 3days later. Thank goodness they did refund my money but I will NEVER fly them again.

Due to weather, my flight was delayed, further delayed, then canceled. I eventually got through to a support person who helped me find a different route out of MSP, but to get to DIA, they didn't want to, but eventually did help with the connection ticket purchase. But even this replacement flight was delayed time and time again, and I would have missed my connecting flights and I didn't want to get stuck in a layover city, so after 12 hours at the airport with two young boys who were very tired, we just cancelled our plans and spent the week at home, instead of Nana's.

Plane and crew on board were fine. Everything else was terrible.

The third party booking with cheapflightsfares was awful. Kayak should NOT partner with them. They sold me a bundle including seat selection and carry-on, but did not book the carry-ons with Frontier, so I’m out of pocket for $414 more while I await resolution.

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

Information on your arrival and departure airports