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

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Sat 11/18
Sat 11/25
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Good to Know

Low Season:
September
Best time to beat the crowds
2%
expected price decrease
High Season:
March
Most popular time to fly
5%
expected price increase
Average Price:
$422
(avg. price over the last 2 weeks)
Good Deal:
$294
or less (round trip)

When to Book Flights from Salt Lake City to Washington Dulles Intl

Average price per month
Flight prices as travel date approaches
-1 day
-2 days

Top tips for Finding a Cheap Flight

When looking for a cheap flight, consider that 25% of our users selected a flight on this route for $293 or less.
The cheapest flight from Salt Lake City to Washington Dulles Intl was found 80 days before departure, on average.
Book at least 2 weeks before departure in order to get a below-average price.
High season is considered to be February, March and April. The cheapest month to fly is September.
Morning departure is around 7% more expensive than an evening flight, on average*.
*Average of the lowest prices shown in KAYAK’s search results for departures within the next 30 days

FAQs for Booking Salt Lake City to Washington Dulles Intl Flights

How long does a flight from Salt Lake City to Washington Dulles Intl take?
An average nonstop flight takes 4h 06m, covering a distance of 1823 miles.
How many flights are there between Salt Lake City and Washington Dulles Intl?
There are 12 (nonstop) flights between Salt Lake City and Washington Dulles Intl per week, averaging 1 per day.
Which airlines provide the cheapest flights from Salt Lake City to Washington Dulles Intl?
In the past 3 days, the cheapest round-trip tickets were found on Frontier ($166), Multiple Airlines ($241) and United ($280).
Do I need a passport to fly between Salt Lake City and Washington Dulles Intl?
No.
Which airlines fly most frequently between Salt Lake City and Washington Dulles Intl?
Delta (1 times daily) are the most frequent flyers on this route.
What’s the cheapest day of the week to fly Salt Lake City to Washington Dulles Intl?
For Salt Lake City to Washington Dulles Intl, Friday is the cheapest day to fly on average and Saturday is the most expensive. Flying from Washington Dulles Intl back to Salt Lake City, the best deals are generally found on Wednesday, with Saturday being the most expensive.

Book cheap flights from Salt Lake City to Washington Dulles Intl (round-trip)

Airports
Origin
Salt Lake City
$166
only
$166
Destination
Washington
$166
only
$166
Fri, Dec 1
SLC
IAD
7h 05m
Mon, Dec 4
IAD
SLC
17h 33m
Trip: 4 days
5.6OkayShow reviews
Overall 5.6 Okay
Based on 32923 reviews
Overall
5.9
Boarding
6.4
Comfort
5.4
Crew
6.8
Entertainment
4.5
Food
4.7
MIA
PHL
Okay 5.6

Flight was on time. The flight was fast and the crew was helpful and courteous

It was cramped. Couldn't recline back. Was only offered water

LGA
MIA
Mediocre 3.6

Flight Very late , when departure already at night Uncomfortable seats $45 for a bag and I have drop it off myself after pay

MIA
ISP
Excellent 8.5

The terminal was empty. Plenty of seats. Boarding doesn't take long. Arrival at ISP is nice because it is small and empty.

PBI
ISP
Mediocre 2.0

Was unable to make it

FSD
DEN
Okay 4.6

The scheduled plane had a mechanical problem so we deplaned for alternative plan. It took six long hours to get another plane in. Meantime passengers stood in line for hours to make other arrangements. It would have been appropriate for the airline to call in extra staff to help stranded passengers. We missed the scheduled connecting flight and a tour. We got in at 1:00 am, 12 hours later than planned. We had meetings next day and were very tired because we got in so late

Tue, Mar 27
SLC
IAD
7h 21m
Tue, Apr 10
IAD
SLC
8h 42m
Trip: 15 days
Overall 0.0 Poor
Based on 0 reviews
Wed, Mar 28
SLC
IAD
7h 34m
Tue, Apr 3
IAD
SLC
6h 15m
Trip: 7 days
7.0GoodShow reviews
Overall 7.0 Good
Based on 51141 reviews
Overall
7.2
Boarding
7.3
Comfort
6.9
Crew
7.7
Entertainment
6.5
Food
6.4
IAH
LAS
Good 7.3

Seat was really hard and hurt to sit on after the first hour. Even had trouble sleeping it was so bad.

DCA
IAH
Good 7.3

Crew was great and helpful!

Not enough options for people with celiac.

SFO
SAN
Excellent 8.0

Boarding was very easy , no long line , trip was on time .

FAT
DEN
Excellent 8.0

Heavy Hispanic woman got ill and I was really worried she might pass away because she kept laying forward asleep or passed out on the back of the seat in front of her. Finally they found a doctor who was bilingual and he took great care of her. So bravo for that UA!

Heavy Hispanic woman got ill and I was really worried she might pass away because she kept laying forward asleep or passed out on the back of the seat in front of her. Finally they found a doctor who was bilingual and he took great care of her. So bravo for that UA!

HNL
LAX
Okay 5.6

Flight was delayed over 8 hours due to "mechanical issues." Went from a nice 757 to a 737 which was a little more cramped.

Tue, Jan 23
SLC
IAD
29h 23m
Wed, Jan 31
IAD
SLC
18h 32m
Trip: 9 days
5.6OkayShow reviews
Overall 5.6 Okay
Based on 32923 reviews
Overall
5.9
Boarding
6.4
Comfort
5.4
Crew
6.8
Entertainment
4.5
Food
4.7
PHL
MIA
Excellent 10.0

Same as all the other airlines in my opinion. Just way more afreoadable.

LGA
MIA
Good 6.0

Close to on time

Staff we unfriendly & they actually charge you for carry on luggage. That’s why they can get new customers in with the promise of cheap fares. I ended up increasing my flat faire price my almost 50% to sit in an aisle seat, which they also charge for & one small sized backback.

MIA
PHL
Okay 5.6

Flight was on time. The flight was fast and the crew was helpful and courteous

It was cramped. Couldn't recline back. Was only offered water

PBI
ISP
Mediocre 2.0

Was unable to make it

MCO
DEN
Okay 4.6

The seats were clean; the cabin looked very nice. The plane got me from point A to B safely. smoothest Lansing ever!

Flight was delayed 2.5 hours. No communication from the cockpit, 2 out of the 4 flight attendants we really crabby. Undersea storage was unusually small. I’m 5’8” and my knees were pressed against the seat in front of me and the seats are hard. My legs were numb for part of the trip.

Mon, Apr 30
SLC
IAD
23h 01m
Wed, May 2
IAD
SLC
19h 38m
Trip: 3 days
5.6OkayShow reviews
Overall 5.6 Okay
Based on 32923 reviews
Overall
5.9
Boarding
6.4
Comfort
5.4
Crew
6.8
Entertainment
4.5
Food
4.7
DEN
ORD
Excellent 10.0

On time. Very organized.

FSD
DEN
Okay 4.6

The scheduled plane had a mechanical problem so we deplaned for alternative plan. It took six long hours to get another plane in. Meantime passengers stood in line for hours to make other arrangements. It would have been appropriate for the airline to call in extra staff to help stranded passengers. We missed the scheduled connecting flight and a tour. We got in at 1:00 am, 12 hours later than planned. We had meetings next day and were very tired because we got in so late

LGA
MIA
Good 6.0

Close to on time

Staff we unfriendly & they actually charge you for carry on luggage. That’s why they can get new customers in with the promise of cheap fares. I ended up increasing my flat faire price my almost 50% to sit in an aisle seat, which they also charge for & one small sized backback.

PVD
TPA
Excellent 9.3

Cheap, comfortable and friendly staff

Getting off the plane took forever on both legs.

LGA
MIA
Mediocre 3.6

Flight Very late , when departure already at night Uncomfortable seats $45 for a bag and I have drop it off myself after pay

Tue, May 1
SLC
IAD
12h 40m
Tue, May 15
IAD
SLC
15h 54m
Trip: 15 days
5.6OkayShow reviews
Overall 5.6 Okay
Based on 32923 reviews
Overall
5.9
Boarding
6.4
Comfort
5.4
Crew
6.8
Entertainment
4.5
Food
4.7
PVD
TPA
Excellent 9.3

Cheap, comfortable and friendly staff

Getting off the plane took forever on both legs.

MIA
PHL
Okay 5.6

Flight was on time. The flight was fast and the crew was helpful and courteous

It was cramped. Couldn't recline back. Was only offered water

FSD
DEN
Okay 4.6

The scheduled plane had a mechanical problem so we deplaned for alternative plan. It took six long hours to get another plane in. Meantime passengers stood in line for hours to make other arrangements. It would have been appropriate for the airline to call in extra staff to help stranded passengers. We missed the scheduled connecting flight and a tour. We got in at 1:00 am, 12 hours later than planned. We had meetings next day and were very tired because we got in so late

DEN
SLC
Okay 5.6

Food, entertainment NA, didn’t use. Rest of flight uneventful, happy to say. Because this was so late due to previous leg of journey delayed, our planned transportation to hotel wa not available.

PBI
ISP
Mediocre 2.0

Was unable to make it

Fri, Feb 2
SLC
IAD
8h 31m
Mon, Feb 12
IAD
SLC
18h 32m
Trip: 11 days
Overall 0.0 Poor
Based on 0 reviews
Mon, May 7
SLC
IAD
17h 08m
Sun, May 13
IAD
SLC
8h 38m
Trip: 7 days
5.6OkayShow reviews
Overall 5.6 Okay
Based on 32923 reviews
Overall
5.9
Boarding
6.4
Comfort
5.4
Crew
6.8
Entertainment
4.5
Food
4.7
LGA
MIA
Good 6.0

Close to on time

Staff we unfriendly & they actually charge you for carry on luggage. That’s why they can get new customers in with the promise of cheap fares. I ended up increasing my flat faire price my almost 50% to sit in an aisle seat, which they also charge for & one small sized backback.

FSD
DEN
Okay 4.6

The scheduled plane had a mechanical problem so we deplaned for alternative plan. It took six long hours to get another plane in. Meantime passengers stood in line for hours to make other arrangements. It would have been appropriate for the airline to call in extra staff to help stranded passengers. We missed the scheduled connecting flight and a tour. We got in at 1:00 am, 12 hours later than planned. We had meetings next day and were very tired because we got in so late

DEN
ORD
Okay 5.3

Low cost

They make you pay for everything. Even peanuts. No entertainment.

LGA
MIA
Mediocre 3.6

Flight Very late , when departure already at night Uncomfortable seats $45 for a bag and I have drop it off myself after pay

MIA
ISP
Excellent 8.5

The terminal was empty. Plenty of seats. Boarding doesn't take long. Arrival at ISP is nice because it is small and empty.

Mon, Dec 18
SLC
IAD
28h 45m
Wed, Jan 3
IAD
SLC
17h 07m
Trip: 17 days
Overall 0.0 Poor
Based on 0 reviews
Thu, Apr 19
SLC
IAD
14h 33m
Sun, Apr 22
IAD
SLC
8h 42m
Trip: 4 days
5.6OkayShow reviews
Overall 5.6 Okay
Based on 32923 reviews
Overall
5.9
Boarding
6.4
Comfort
5.4
Crew
6.8
Entertainment
4.5
Food
4.7
FSD
DEN
Okay 4.6

The scheduled plane had a mechanical problem so we deplaned for alternative plan. It took six long hours to get another plane in. Meantime passengers stood in line for hours to make other arrangements. It would have been appropriate for the airline to call in extra staff to help stranded passengers. We missed the scheduled connecting flight and a tour. We got in at 1:00 am, 12 hours later than planned. We had meetings next day and were very tired because we got in so late

MIA
ISP
Excellent 8.5

The terminal was empty. Plenty of seats. Boarding doesn't take long. Arrival at ISP is nice because it is small and empty.

PBI
ISP
Mediocre 2.0

Was unable to make it

PVD
TPA
Excellent 9.3

Cheap, comfortable and friendly staff

Getting off the plane took forever on both legs.

DEN
ORD
Okay 5.3

Low cost

They make you pay for everything. Even peanuts. No entertainment.

Sun, Nov 19
SLC
IAD
4h 08m
Sat, Nov 25
IAD
SLC
4h 58m
Trip: 7 days
6.3GoodShow reviews
Overall 6.3 Good
Based on 2 reviews
Overall
8.0
Boarding
8.1
Comfort
7.7
Crew
8.4
Entertainment
7.5
Food
7.3
LGA
CVG
Excellent 8.3

Plane was far too tight. Very uncomfortable for taller individuals.

ATL
SNA
Excellent 8.0

4 hour flight. Non-eventful except slight turbulence. Good to be home! Thank you!

NA

ATL
BNA
Excellent 10.0

Compared to previous flight - this was so much better with upgrade to first class and extra space.

MOB
ATL
Good 6.0

Felt like I was sitting in my neighbors lap!

CHA
ATL
Excellent 10.0

On time departure and arrival. The Airbus plane has enough legroom for tall persons.

Wed, Mar 28
SLC
IAD
7h 34m
Thu, Apr 5
IAD
SLC
7h 32m
Trip: 9 days
7.0GoodShow reviews
Overall 7.0 Good
Based on 51141 reviews
Overall
7.2
Boarding
7.3
Comfort
6.9
Crew
7.7
Entertainment
6.5
Food
6.4
SJC
EWR
Mediocre 3.6

Arrived on time

Narrow seat

EWR
NRT
Mediocre 3.6

There was a flight attendant who was a little rude.

DEN
IAD
Okay 4.3

Staff was friendly

United has a system glitch and we were delayed. I got in around 1 am instead of 11 pm. I decide to order a glass of wine and since they don’t give receipts. I found out i was charged for 2 glasses instead of one. To top it off the co-worker i was traveling with didn’t get charged due to the inconvenience and delay. i travel a lot with United (higher status than him) and would have liked that offer (and not get charged one i didn’t order) being a mileage plus and credit card holder. I did go on line and ask for a credit and they did make it right and give me a credit.

HNL
LAX
Okay 5.6

Flight was delayed over 8 hours due to "mechanical issues." Went from a nice 757 to a 737 which was a little more cramped.

DCA
IAH
Good 7.3

Crew was great and helpful!

Not enough options for people with celiac.

Sat, Feb 3
SLC
IAD
13h 12m
Wed, Feb 7
IAD
SLC
9h 05m
Trip: 5 days
Overall 0.0 Poor
Based on 0 reviews
Sat, Dec 23
SLC
IAD
4h 06m
Sun, Dec 31
IAD
SLC
5h 15m
Trip: 9 days
6.3GoodShow reviews
Overall 6.3 Good
Based on 2 reviews
Overall
8.0
Boarding
8.1
Comfort
7.7
Crew
8.4
Entertainment
7.5
Food
7.3
YUL
ATL
Good 6.0

Fligth were on time

My flight from Montreal to Atlanta was 2:30 min Left at 6:10 arrive at 8:30 roughly Tried twice to get to my connection earlier and get 9:30 instead of 12:09 fligth to Daytona Delta was not flexible to allow me to book saying i did not have 55 min in between fligth which i had than lear n it will cost $75.00 to change the fligth - What? Very disappointed of Delta - lost 3 hrs at the airport today

LAX
GUA
Mediocre 2.0

Nothing worst flight I've ever had.

Everything Delta was so poor quality!!! The flight attendants were not helpful.

SLC
IAD
Okay 4.0

flight attendants were great.

not enough leg room and space. The business class should be at the minimum for economy.

ATL
BNA
Excellent 10.0

Compared to previous flight - this was so much better with upgrade to first class and extra space.

JFK
LAX
Excellent 9.3

Check in was easy through their app. Also very quick lines to drop off bags. Crew was very nice and respectful

Seat are a little bit too close together. But overall very comfortable

Wed, Nov 22
SLC
IAD
7h 05m
Sun, Nov 26
IAD
SLC
22h 04m
Trip: 5 days
5.6OkayShow reviews
Overall 5.6 Okay
Based on 32923 reviews
Overall
5.9
Boarding
6.4
Comfort
5.4
Crew
6.8
Entertainment
4.5
Food
4.7
PVD
TPA
Excellent 9.3

Cheap, comfortable and friendly staff

Getting off the plane took forever on both legs.

MCO
DEN
Okay 4.6

The seats were clean; the cabin looked very nice. The plane got me from point A to B safely. smoothest Lansing ever!

Flight was delayed 2.5 hours. No communication from the cockpit, 2 out of the 4 flight attendants we really crabby. Undersea storage was unusually small. I’m 5’8” and my knees were pressed against the seat in front of me and the seats are hard. My legs were numb for part of the trip.

DEN
ORD
Excellent 10.0

On time. Very organized.

DEN
SLC
Okay 5.6

Food, entertainment NA, didn’t use. Rest of flight uneventful, happy to say. Because this was so late due to previous leg of journey delayed, our planned transportation to hotel wa not available.

MIA
PHL
Okay 5.6

Flight was on time. The flight was fast and the crew was helpful and courteous

It was cramped. Couldn't recline back. Was only offered water

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The fares displayed include all taxes and fees for economy class travel and were found by the provider in the last 72 hours. Seats are limited and may not be available on all flights and days. Fares are subject to change and may not be available on all flights or dates of travel. Some carriers charge additional fees for extra checked bags. Please check the carriers' sites.