Find Cheap Flights from Denver International to Washington Dulles Intl (DEN - IAD)

Search hundreds of travel sites at once for deals on flights to Washington Dulles Intl

Thu 2/22
Thu 3/1
Any month
Compare vs. KAYAK |

Good to Know

Low Season:
October
Best time to beat the crowds
3%
expected price decrease
High Season:
January
Most popular time to fly
18%
expected price increase
Average Price:
$330
(avg. price over the last 2 weeks)
Good Deal:
$242
or less (round trip)

When to Book Flights from Denver International 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

Looking for a cheap flight? 25% of our users found flights on this route for $242 or less.
The cheapest flight from Denver International to Washington Dulles Intl was found 80 days before departure, on average.
Book at least 3 weeks before departure in order to get a below-average price.
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 Denver International to Washington Dulles Intl Flights

How long does a flight from Denver International to Washington Dulles Intl take?
An average nonstop flight takes 3h 13m, covering a distance of 1449 miles.
How many flights are there between Denver International and Washington Dulles Intl?
There are 420 (nonstop) flights between Denver International and Washington Dulles Intl per week, averaging 64 per day.
Which airlines provide the cheapest flights from Denver International to Washington Dulles Intl?
In the past 3 days, the cheapest round-trip tickets were found on United ($139), Multiple Airlines ($139) and Frontier ($139).
Do I need a passport to fly between Denver International and Washington Dulles Intl?
No.
Which airlines fly most frequently between Denver International and Washington Dulles Intl?
United (20 times daily), Brussels Airlines (9 times daily), Southwest (6 times daily) are the most frequent flyers on this route.
What’s the cheapest day of the week to fly Denver International to Washington Dulles Intl?
For Denver International to Washington Dulles Intl, Tuesday is the cheapest day to fly on average and Wednesday is the most expensive. Flying from Washington Dulles Intl back to Denver International, the best deals are generally found on Sunday, with Wednesday being the most expensive.

Book cheap flights from Denver International to Washington Dulles Intl (round-trip)

Airports
Origin
Denver
$139
only
$139
Destination
Washington
$139
only
$139
Tue, Mar 13
DEN
IAD
3h 13m
Tue, Mar 20
IAD
DEN
3h 56m
Trip: 8 days
7.4GoodShow reviews
Overall 7.4 Good
Based on 103 reviews
Overall
7.2
Boarding
7.4
Comfort
7.0
Crew
7.7
Entertainment
6.5
Food
6.4
DEN
IAD
Okay 5.6

The plane was over two hours late! They decided to use a plane from Tokyo, so we got to wait for customs. I had just lost my mother and all I wanted to was get home. They kept saying soon. It doesn't seem efficient to use an international plane for domestic flights!

DEN
IAD
Good 7.0

I like that I was added to the upgrade list. I used to loathe flying with United because the staff and crew were simply terrible. They were rude, unhelpful and could care less about what you needed. However, since that unfortunate incident of dragging that poor man off the plane a while back, you all have been trying very hard to get your butts in gear and do better and I see it. Keep improving the training is employees and I’ll be proud to fly with you all again.

However the list is so long and not realistic that anyone will ever actually get upgraded. Im usually number 40 or higher and there are often maybe 4-6 actual upgrade seats. Guess it’s just a way to let everyone one where they stand so I gets it snktball awful.

DEN
IAD
Good 6.0

Boarding delayed for cleaning. Then sat on tarmac for another 20 min

DEN
IAD
Mediocre 2.0

Delayed flight due to "low air in tire" made me miss my connection to Iceland and ruined my very expensive vacation.

DEN
IAD
Mediocre 2.0

Missed my connection due to late flight arrival and had to fly out the next day.

Wed, Apr 4
DEN
IAD
3h 13m
Wed, Apr 18
IAD
DEN
3h 58m
Trip: 15 days
Overall 0.0 Poor
Based on 0 reviews
Mon, Apr 30
DEN
IAD
3h 17m
Wed, Jun 6
IAD
DEN
3h 57m
Trip: 38 days
4.5OkayShow reviews
Overall 4.5 Okay
Based on 164 reviews
Overall
5.9
Boarding
6.4
Comfort
5.4
Crew
6.8
Entertainment
4.5
Food
4.7
DEN
IAD
Mediocre 3.6

I liked the fact that I can fly red eye.

I typically fly Southwest because of the free leg room, free 2 bags checked, and 2 free carry-ons. Frontier "fee's" flyers to death. I have to pay extea for leg room????!!! REALLY! I could see if i was 6'6" but I'm not. If Southwest ever offers red eye flights I'll never patronize Frontier or another airline again.

DEN
IAD
Good 6.0

Clean

You have pay for everything except water.

DEN
IAD
Good 6.3

The staff was wonderful.

Couldn't sit in our seats and was moved for a young lady who got the whole row to herself. I had a guest who had never flown, so a window seat was exciting. Unfortunately he was not able to experience that.

DEN
IAD
Mediocre 2.0

Nothing.

The ticket cost buys you the option to pay for a seat. To get a seat next to my wife, we paid $17 per seat that didn't recline (that is extra) and the seat themselves are hard plastic with a 2 mm thick pleather cover. Each bag was $45 and they charged for each carry on. Every drink including water was a fee...worst flight I have ever experienced. We paid for another airline on the return leg.

DEN
IAD
Mediocre 3.3

Very little

Left my wallet on the plane and they would not help get it back to me Tiniest tray table I've ever seen before Everything costs money. Picking your seat, carryon, soda, snacks, etc.

Mon, Mar 5
DEN
IAD
7h 26m
Tue, Mar 13
IAD
DEN
6h 23m
Trip: 8 days
7.2GoodShow reviews
Overall 7.2 Good
Based on 28375 reviews
Overall
7.4
Boarding
7.5
Comfort
7.1
Crew
7.8
Entertainment
6.7
Food
6.6
BUF
PHL
Mediocre 2.0

None of the experience was pleasant

First flight was delayed causing us to miss the 2nd flight and we ended sleeping on a chair at the airport waiting for a morning flight. AMERICAN AIRLINES didn't even have the decency to put us in a hotel for the night due to their delay. Then they added a 2nd lay over which was delayed for hours also. Traveling was to visit my mother who had cancer and I was sick so this made the trip even more distasteful.

ILM
CLT
Okay 4.6

The crew was nice

I flew American four times in 7 days, every flight was delayed. delay times varied from 90 minutes to over three hours. Fog in Chicago was beyond anybody's control, but the other times were not weather related, I recently flew frontier Air and their flights were also late. I jinxed myself by stating I never have this issue with AA. Great job at proving me wrong. I flew a good bit last year and these issues didn't start until after the new year., Thank you for your time.

BOS
LAX
Okay 4.0

What you expect from an internal US flight: no food, crowded flight, cramped seats. I have come to expect two things - arrive on time and arrive safely. The good, we arrived safely.

Pulled away from gate and sat on tarmac for over an hour while technical difficulties fixed. We should not have boarded until plane was ready. We arrived over one hour late and just made connecting flight. Our luggage was not so fortunate.

HND
LAX
Okay 4.0

Assigned middle seat, no choice.

SAT
MIA
Excellent 10.0

All

Nothing

Tue, Mar 20
DEN
IAD
3h 13m
Wed, Apr 4
IAD
DEN
4h 03m
Trip: 16 days
7.4GoodShow reviews
Overall 7.4 Good
Based on 103 reviews
Overall
7.2
Boarding
7.4
Comfort
7.0
Crew
7.7
Entertainment
6.5
Food
6.4
DEN
IAD
Okay 4.0

The flight actually had hot food for sale! The cheeseburger was pretty good.

I had a really hard time getting the cabin crews' attention during boarding for a piece of safety equipment. I hit the call light, tried to catch them as the crew was distributing headphones, and the light got turned off by an off-duty flight attendant without checking that we needed something. I got it in the end with an apology from crew but I still don't feel terribly safe Also, the paid entertainment system that my neighbors purchased seemed to be down with static for a portion of the flight.

DEN
IAD
Excellent 8.6

Phone charger at every seat

Earphones for movie did not work

DEN
IAD
Excellent 10.0

When I was flying red eye they made it really easy to sleep. Lots of room excellent.

I was too drunk and my ears felt like they were bleeding but the staff was really nice

DEN
IAD
Mediocre 2.0

Missed my connection due to late flight arrival and had to fly out the next day.

DEN
IAD
Good 6.0

since I am short, the neck portion of the seat is uncomfortable.

Tue, May 1
DEN
IAD
3h 17m
Wed, Jun 6
IAD
DEN
3h 57m
Trip: 37 days
4.5OkayShow reviews
Overall 4.5 Okay
Based on 164 reviews
Overall
5.9
Boarding
6.4
Comfort
5.4
Crew
6.8
Entertainment
4.5
Food
4.7
DEN
IAD
Mediocre 3.3

Very little

Left my wallet on the plane and they would not help get it back to me Tiniest tray table I've ever seen before Everything costs money. Picking your seat, carryon, soda, snacks, etc.

DEN
IAD
Good 6.5

Boarding and crew were as good as could be.

We were told to put carry on baggage underneath our crowded feet if we didn't pay for it. Those who paid were supposed to get the space above the seats. Boo hiss, Frontier.

DEN
IAD
Good 6.3

The staff was wonderful.

Couldn't sit in our seats and was moved for a young lady who got the whole row to herself. I had a guest who had never flown, so a window seat was exciting. Unfortunately he was not able to experience that.

DEN
IAD
Okay 4.6

.

jammed into seats. mini tray tables to hold $2.99 sodas. booze smelling drunk fool behind me still getting served multiple drinks. thank god for Netflix n headphones

DEN
IAD
Mediocre 2.3

The boarding process was the best part of the experience which isn't saying much.

Extra fees for everything. I got a sore neck carrying my "personal bag" so as not to be charged. Not even a snack or beverage!! The worst part are the plastic bucket seats with very little padding and no head rests. I WAS MISERABLE AND UNCOMFORTABLE. The attendants were always explaining to MANY customers that they would have to pay for. Drinks-oh and you can only use a credit card. Cash isn't good enough

Wed, Apr 11
DEN
IAD
3h 20m
Mon, Apr 30
IAD
DEN
3h 46m
Trip: 20 days
Overall 0.0 Poor
Based on 0 reviews
Wed, Apr 4
DEN
IAD
3h 13m
Tue, Apr 10
IAD
DEN
3h 46m
Trip: 7 days
7.4GoodShow reviews
Overall 7.4 Good
Based on 103 reviews
Overall
7.2
Boarding
7.4
Comfort
7.0
Crew
7.7
Entertainment
6.5
Food
6.4
DEN
IAD
Mediocre 2.0

Delayed flight due to "low air in tire" made me miss my connection to Iceland and ruined my very expensive vacation.

DEN
IAD
Excellent 8.6

Phone charger at every seat

Earphones for movie did not work

DEN
IAD
Mediocre 2.6

I paid extra to sit beside my girlfriend and bring a full size carry-on then the flight required that some people check their carry-ons because of space limitations. I would like to be reimbursed for the additional fee I paid to not check my bags.

DEN
IAD
Mediocre 2.0

Missed my connection due to late flight arrival and had to fly out the next day.

DEN
IAD
Good 6.0

Boarding delayed for cleaning. Then sat on tarmac for another 20 min

Mon, May 7
DEN
IAD
3h 17m
Mon, May 21
IAD
DEN
3h 52m
Trip: 15 days
4.5OkayShow reviews
Overall 4.5 Okay
Based on 164 reviews
Overall
5.9
Boarding
6.4
Comfort
5.4
Crew
6.8
Entertainment
4.5
Food
4.7
DEN
IAD
Good 6.0

Seats do not recline unless you've purchased a first class ticket and leg room is quite limited, making an overnight flight very uncomfortable. Tray table is about 1/3 the size of most airplane tables. I asked at the ticketing counter if I was able to board with both my purse and small bag (both would easily fit under the seat together), and was told I'd be charged for a carry on, so I had to stuff my purse inside the personal bag to avoid a charge. Flight crew was polite but not overly friendly. Snacks and beverages are not complimentary (I didn't ask about water but it seems like there are mixed messages about whether that is complimentary or not based on other reviews). I have flown Frontier in the past so I was aware that seats and baggage cost extra, but prices seem higher than they had been in the past ($12 for the cheapest pre-selected seats, $36 for carry on). Only perk was that the flight was direct from DEN-IAD.

DEN
IAD
Okay 4.0

Process was quick and easy.

Very uncomfortable seats, I understand cutting back on service, but nothing for free anymore? No, magazine or map. No audio or video? And next to nothing padding on seats this is pretty poor when you can 't even recline.

DEN
IAD
Good 6.5

Boarding and crew were as good as could be.

We were told to put carry on baggage underneath our crowded feet if we didn't pay for it. Those who paid were supposed to get the space above the seats. Boo hiss, Frontier.

DEN
IAD
Mediocre 2.0

Nothing.

The flight was delayed due to a "captain switch" but upon arrival of the new captain, he stated he didn't know what the problem was and that he was called from reserve. While we waited during the delay, the Frontier staff openly mocked previous passengers, repeatedly cursed, sat in wheelchairs gossiping, ignored guest requests, and loudly discussed bowel movements. My fiancé wrote two complaints to the airline during our wait - none of which received a response. This airline is unprofessional and I will not fly it again.

DEN
IAD
Mediocre 3.3

Very little

Left my wallet on the plane and they would not help get it back to me Tiniest tray table I've ever seen before Everything costs money. Picking your seat, carryon, soda, snacks, etc.

Wed, Mar 7
DEN
IAD
5h 33m
Tue, Mar 13
IAD
DEN
8h 22m
Trip: 6 days
7.2GoodShow reviews
Overall 7.2 Good
Based on 28375 reviews
Overall
7.4
Boarding
7.5
Comfort
7.1
Crew
7.8
Entertainment
6.7
Food
6.6
PHL
PVD
Okay 5.3

Flight was not completely full so I got an empty seat next to me.

We were delayed due to some balance issues.

BUF
PHL
Mediocre 2.0

None of the experience was pleasant

First flight was delayed causing us to miss the 2nd flight and we ended sleeping on a chair at the airport waiting for a morning flight. AMERICAN AIRLINES didn't even have the decency to put us in a hotel for the night due to their delay. Then they added a 2nd lay over which was delayed for hours also. Traveling was to visit my mother who had cancer and I was sick so this made the trip even more distasteful.

DTW
MIA
Excellent 8.0

Easy check in.

Service staff was friendly enough; maybe I’m used to southwest. As someone who is anxious to fly smiling faces are always appreciate.

SCL
DFW
Excellent 10.0

The professionalism from the entire crew. Very smooth flight. The in-flight meal was very good .

Even dow we were late departing Santiago Chile, we made it to Dallas in good time.

BOS
LAX
Okay 4.0

What you expect from an internal US flight: no food, crowded flight, cramped seats. I have come to expect two things - arrive on time and arrive safely. The good, we arrived safely.

Pulled away from gate and sat on tarmac for over an hour while technical difficulties fixed. We should not have boarded until plane was ready. We arrived over one hour late and just made connecting flight. Our luggage was not so fortunate.

Sat, May 5
DEN
IAD
5h 38m
Wed, Jun 6
IAD
DEN
3h 57m
Trip: 33 days
Overall 0.0 Poor
Based on 0 reviews
Wed, Apr 4
DEN
IAD
3h 13m
Tue, Apr 10
IAD
DEN
3h 46m
Trip: 7 days
7.4GoodShow reviews
Overall 7.4 Good
Based on 103 reviews
Overall
7.2
Boarding
7.4
Comfort
7.0
Crew
7.7
Entertainment
6.5
Food
6.4
DEN
IAD
Excellent 10.0

When I was flying red eye they made it really easy to sleep. Lots of room excellent.

I was too drunk and my ears felt like they were bleeding but the staff was really nice

DEN
IAD
Mediocre 2.6

I paid extra to sit beside my girlfriend and bring a full size carry-on then the flight required that some people check their carry-ons because of space limitations. I would like to be reimbursed for the additional fee I paid to not check my bags.

DEN
IAD
Mediocre 2.0

Missed my connection due to late flight arrival and had to fly out the next day.

DEN
IAD
Okay 5.6

The plane was over two hours late! They decided to use a plane from Tokyo, so we got to wait for customs. I had just lost my mother and all I wanted to was get home. They kept saying soon. It doesn't seem efficient to use an international plane for domestic flights!

DEN
IAD
Good 6.0

Boarding delayed for cleaning. Then sat on tarmac for another 20 min

Tue, May 8
DEN
IAD
3h 17m
Wed, May 16
IAD
DEN
3h 52m
Trip: 9 days
4.5OkayShow reviews
Overall 4.5 Okay
Based on 164 reviews
Overall
5.9
Boarding
6.4
Comfort
5.4
Crew
6.8
Entertainment
4.5
Food
4.7
DEN
IAD
Mediocre 2.3

The boarding process was the best part of the experience which isn't saying much.

Extra fees for everything. I got a sore neck carrying my "personal bag" so as not to be charged. Not even a snack or beverage!! The worst part are the plastic bucket seats with very little padding and no head rests. I WAS MISERABLE AND UNCOMFORTABLE. The attendants were always explaining to MANY customers that they would have to pay for. Drinks-oh and you can only use a credit card. Cash isn't good enough

DEN
IAD
Good 6.5

Boarding and crew were as good as could be.

We were told to put carry on baggage underneath our crowded feet if we didn't pay for it. Those who paid were supposed to get the space above the seats. Boo hiss, Frontier.

DEN
IAD
Mediocre 2.0

Nothing.

The ticket cost buys you the option to pay for a seat. To get a seat next to my wife, we paid $17 per seat that didn't recline (that is extra) and the seat themselves are hard plastic with a 2 mm thick pleather cover. Each bag was $45 and they charged for each carry on. Every drink including water was a fee...worst flight I have ever experienced. We paid for another airline on the return leg.

DEN
IAD
Mediocre 3.3

Very little

Left my wallet on the plane and they would not help get it back to me Tiniest tray table I've ever seen before Everything costs money. Picking your seat, carryon, soda, snacks, etc.

DEN
IAD
Okay 4.6

.

jammed into seats. mini tray tables to hold $2.99 sodas. booze smelling drunk fool behind me still getting served multiple drinks. thank god for Netflix n headphones

Tue, Apr 24
DEN
IAD
7h 59m
Tue, May 1
IAD
DEN
8h 43m
Trip: 8 days
7.2GoodShow reviews
Overall 7.2 Good
Based on 28375 reviews
Overall
7.4
Boarding
7.5
Comfort
7.1
Crew
7.8
Entertainment
6.7
Food
6.6
ORD
CLE
Excellent 10.0

It was a very good fight

I didn't like the fact that the gate kept on changed 3-4 times and that it was delayed for an hour

BOS
LAX
Okay 4.0

What you expect from an internal US flight: no food, crowded flight, cramped seats. I have come to expect two things - arrive on time and arrive safely. The good, we arrived safely.

Pulled away from gate and sat on tarmac for over an hour while technical difficulties fixed. We should not have boarded until plane was ready. We arrived over one hour late and just made connecting flight. Our luggage was not so fortunate.

ILM
CLT
Okay 4.6

The crew was nice

I flew American four times in 7 days, every flight was delayed. delay times varied from 90 minutes to over three hours. Fog in Chicago was beyond anybody's control, but the other times were not weather related, I recently flew frontier Air and their flights were also late. I jinxed myself by stating I never have this issue with AA. Great job at proving me wrong. I flew a good bit last year and these issues didn't start until after the new year., Thank you for your time.

SAT
MIA
Excellent 10.0

All

Nothing

PHL
SFO
Good 7.6

Tight connection! The airlines need to Realize that a 2 hour layover is NOT enough when you have to go through immigration, customs, and security before making your next flight!

Mon, May 7
DEN
IAD
3h 17m
Tue, May 15
IAD
DEN
6h 18m
Trip: 9 days
Overall 0.0 Poor
Based on 0 reviews
Tue, May 8
DEN
IAD
3h 17m
Wed, May 16
IAD
DEN
3h 52m
Trip: 9 days
4.5OkayShow reviews
Overall 4.5 Okay
Based on 164 reviews
Overall
5.9
Boarding
6.4
Comfort
5.4
Crew
6.8
Entertainment
4.5
Food
4.7
DEN
IAD
Good 6.3

The staff was wonderful.

Couldn't sit in our seats and was moved for a young lady who got the whole row to herself. I had a guest who had never flown, so a window seat was exciting. Unfortunately he was not able to experience that.

DEN
IAD
Mediocre 2.0

Nothing.

The flight was delayed due to a "captain switch" but upon arrival of the new captain, he stated he didn't know what the problem was and that he was called from reserve. While we waited during the delay, the Frontier staff openly mocked previous passengers, repeatedly cursed, sat in wheelchairs gossiping, ignored guest requests, and loudly discussed bowel movements. My fiancé wrote two complaints to the airline during our wait - none of which received a response. This airline is unprofessional and I will not fly it again.

DEN
IAD
Mediocre 2.3

The boarding process was the best part of the experience which isn't saying much.

Extra fees for everything. I got a sore neck carrying my "personal bag" so as not to be charged. Not even a snack or beverage!! The worst part are the plastic bucket seats with very little padding and no head rests. I WAS MISERABLE AND UNCOMFORTABLE. The attendants were always explaining to MANY customers that they would have to pay for. Drinks-oh and you can only use a credit card. Cash isn't good enough

DEN
IAD
Good 6.0

Seats do not recline unless you've purchased a first class ticket and leg room is quite limited, making an overnight flight very uncomfortable. Tray table is about 1/3 the size of most airplane tables. I asked at the ticketing counter if I was able to board with both my purse and small bag (both would easily fit under the seat together), and was told I'd be charged for a carry on, so I had to stuff my purse inside the personal bag to avoid a charge. Flight crew was polite but not overly friendly. Snacks and beverages are not complimentary (I didn't ask about water but it seems like there are mixed messages about whether that is complimentary or not based on other reviews). I have flown Frontier in the past so I was aware that seats and baggage cost extra, but prices seem higher than they had been in the past ($12 for the cheapest pre-selected seats, $36 for carry on). Only perk was that the flight was direct from DEN-IAD.

DEN
IAD
Okay 4.3

Miserable chairs. Hard, Can't recline, armrests are small and don't go up, mini trays vertually useless.

Sat, May 5
DEN
IAD
5h 38m
Tue, May 8
IAD
DEN
6h 08m
Trip: 4 days
7.2GoodShow reviews
Overall 7.2 Good
Based on 28375 reviews
Overall
7.4
Boarding
7.5
Comfort
7.1
Crew
7.8
Entertainment
6.7
Food
6.6
PHL
PVD
Okay 5.3

Flight was not completely full so I got an empty seat next to me.

We were delayed due to some balance issues.

ORD
CLE
Excellent 10.0

It was a very good fight

I didn't like the fact that the gate kept on changed 3-4 times and that it was delayed for an hour

HND
LAX
Okay 4.0

Assigned middle seat, no choice.

BOS
LAX
Okay 4.0

What you expect from an internal US flight: no food, crowded flight, cramped seats. I have come to expect two things - arrive on time and arrive safely. The good, we arrived safely.

Pulled away from gate and sat on tarmac for over an hour while technical difficulties fixed. We should not have boarded until plane was ready. We arrived over one hour late and just made connecting flight. Our luggage was not so fortunate.

PHL
PHX
Good 6.0

Flight attendants very friendly. The gate attendant found us two seats together even though they couldn't do it initially in NYC.

Sitting in the last row.

Mon, May 14
DEN
IAD
3h 17m
Wed, May 23
IAD
DEN
3h 52m
Trip: 10 days
4.5OkayShow reviews
Overall 4.5 Okay
Based on 164 reviews
Overall
5.9
Boarding
6.4
Comfort
5.4
Crew
6.8
Entertainment
4.5
Food
4.7
DEN
IAD
Okay 4.6

.

jammed into seats. mini tray tables to hold $2.99 sodas. booze smelling drunk fool behind me still getting served multiple drinks. thank god for Netflix n headphones

DEN
IAD
Good 6.5

Boarding and crew were as good as could be.

We were told to put carry on baggage underneath our crowded feet if we didn't pay for it. Those who paid were supposed to get the space above the seats. Boo hiss, Frontier.

DEN
IAD
Mediocre 2.3

The boarding process was the best part of the experience which isn't saying much.

Extra fees for everything. I got a sore neck carrying my "personal bag" so as not to be charged. Not even a snack or beverage!! The worst part are the plastic bucket seats with very little padding and no head rests. I WAS MISERABLE AND UNCOMFORTABLE. The attendants were always explaining to MANY customers that they would have to pay for. Drinks-oh and you can only use a credit card. Cash isn't good enough

DEN
IAD
Good 6.3

The staff was wonderful.

Couldn't sit in our seats and was moved for a young lady who got the whole row to herself. I had a guest who had never flown, so a window seat was exciting. Unfortunately he was not able to experience that.

DEN
IAD
Mediocre 3.3

Very little

Left my wallet on the plane and they would not help get it back to me Tiniest tray table I've ever seen before Everything costs money. Picking your seat, carryon, soda, snacks, etc.

Sat, May 5
DEN
IAD
7h 31m
Sat, May 12
IAD
DEN
6h 57m
Trip: 8 days
7.2GoodShow reviews
Overall 7.2 Good
Based on 28375 reviews
Overall
7.4
Boarding
7.5
Comfort
7.1
Crew
7.8
Entertainment
6.7
Food
6.6
BUF
PHL
Mediocre 2.0

None of the experience was pleasant

First flight was delayed causing us to miss the 2nd flight and we ended sleeping on a chair at the airport waiting for a morning flight. AMERICAN AIRLINES didn't even have the decency to put us in a hotel for the night due to their delay. Then they added a 2nd lay over which was delayed for hours also. Traveling was to visit my mother who had cancer and I was sick so this made the trip even more distasteful.

BOS
LAX
Okay 4.0

What you expect from an internal US flight: no food, crowded flight, cramped seats. I have come to expect two things - arrive on time and arrive safely. The good, we arrived safely.

Pulled away from gate and sat on tarmac for over an hour while technical difficulties fixed. We should not have boarded until plane was ready. We arrived over one hour late and just made connecting flight. Our luggage was not so fortunate.

PHL
PVD
Okay 5.3

Flight was not completely full so I got an empty seat next to me.

We were delayed due to some balance issues.

ILM
CLT
Okay 4.6

The crew was nice

I flew American four times in 7 days, every flight was delayed. delay times varied from 90 minutes to over three hours. Fog in Chicago was beyond anybody's control, but the other times were not weather related, I recently flew frontier Air and their flights were also late. I jinxed myself by stating I never have this issue with AA. Great job at proving me wrong. I flew a good bit last year and these issues didn't start until after the new year., Thank you for your time.

DTW
MIA
Excellent 8.0

Easy check in.

Service staff was friendly enough; maybe I’m used to southwest. As someone who is anxious to fly smiling faces are always appreciate.

Wed, Feb 28
DEN
IAD
3h 15m
Tue, Apr 3
IAD
DEN
3h 57m
Trip: 34 days
7.4GoodShow reviews
Overall 7.4 Good
Based on 103 reviews
Overall
7.2
Boarding
7.4
Comfort
7.0
Crew
7.7
Entertainment
6.5
Food
6.4
DEN
IAD
Excellent 8.6

Phone charger at every seat

Earphones for movie did not work

DEN
IAD
Okay 5.6

The plane was over two hours late! They decided to use a plane from Tokyo, so we got to wait for customs. I had just lost my mother and all I wanted to was get home. They kept saying soon. It doesn't seem efficient to use an international plane for domestic flights!

DEN
IAD
Mediocre 2.0

Missed my connection due to late flight arrival and had to fly out the next day.

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.

DEN
IAD
Mediocre 2.6

I paid extra to sit beside my girlfriend and bring a full size carry-on then the flight required that some people check their carry-ons because of space limitations. I would like to be reimbursed for the additional fee I paid to not check my bags.

Show more results

Denver International to Washington Dulles Intl Flight Information

Avg. Flight Duration 3h 34m
Flights Arrive in Washington Dulles Intl
Flights Depart from Denver International
Flight Price $139
Distance 1449 miles
Airlines United, Frontier, American Airlines
*
Prices are per person and are for e–tickets and include all taxes & fees in USD.

We attempt to get accurate prices, however, prices are not guaranteed.

Here's why:

We’re not the seller.
At KAYAK we don’t set the prices, so it’s not possible for us to guarantee what other companies are selling.

We compile tonnes of data for you
Our service lets you quickly and easily compare results from hundreds of travel sites at once. In this sense, KAYAK is a search engine and we can't guarantee prices we find.

Why aren’t prices accurate 100% of the time?
Prices on airline seats, hotel rooms and car rentals can change frequently. Several people may also be trying to buy the same travel option simultaneously. As a result, you may find, on occasion, that certain prices are no longer available.

If you have more questions or if you have a bad price to report to us,
please send us an and someone from our team will get back to you promptly.

^
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.