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Book cheap flights from Colorado to Washington (round-trip)

Airports
Origin
Denver
$139
only
$139
Destination
Washington
$139
only
$139
$146
only
$146
Tue, Mar 6
DEN
IAD
3h 15m
Sun, Mar 11
IAD
DEN
3h 57m
Trip: 6 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

My passport was held up because of the Government shutdown and I was treated poorly about trying to change my ticket. I now can’t go because I can’t afford to change ticket and the waiver documents I need to do so sounds like it’s just another excuse from the airline for not honoring my ticket. I can’t go now because of passport, but I can’t go because I am unable to buy another ticket

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
Excellent 8.6

Phone charger at every seat

Earphones for movie did not work

DEN
IAD
Good 6.0

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

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.

Wed, Apr 25
DEN
IAD
3h 17m
Thu, May 3
IAD
DEN
3h 52m
Trip: 9 days
Overall 0.0 Poor
Based on 0 reviews
Mon, Apr 30
DEN
IAD
3h 17m
Wed, May 9
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 6.0

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
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
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
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.

Wed, Feb 28
DEN
IAD
5h 31m
Tue, Mar 6
IAD
DEN
6h 23m
Trip: 7 days
7.2GoodShow reviews
Overall 7.2 Good
Based on 28211 reviews
Overall
7.4
Boarding
7.5
Comfort
7.1
Crew
7.8
Entertainment
6.7
Food
6.7
ORD
CLT
Mediocre 3.0

Three hours delay. I paid for a upgrade to first class. But because of the flight change i didn't get to keep my upgrade and I had to beg for a refund. I have had two trips in the past 5 days and all flights have been anywhere from 1 to 3 hours late. Worst experience with AA I have had in a long time.

CLT
ILM
Mediocre 3.0

Three hours delay. I paid for a upgrade to first class. But because of the flight change i didn't get to keep my upgrade and I had to beg for a refund. I have had two trips in the past 5 days and all flights have been anywhere from 1 to 3 hours late. Worst experience with AA I have had in a long time.

PHX
GEG
Good 7.3

The crew was friendly and informative. They were very helpful. The

The seats were uncomfortable. They were hard and so narrow I had to sit crooked in the seat to keep from getting banged into by the service carts and every person going by to the bathrooms. I'm not tiny, but I'm not huge either, it was just overcrowded. It was also very hot in the airplane the entire way from Phoenix to Spokane. My husband, who is always cold, was even hot.

JFK
EZE
Excellent 9.0

Beautiful design n great storage

Hard to get out of seat unless in fully upright biz class position

SJU
MIA
Excellent 9.3

New onboard entertainment

Tue, Mar 13
DEN
IAD
3h 13m
Tue, Mar 20
IAD
DEN
3h 57m
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
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
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
Mediocre 2.0

My passport was held up because of the Government shutdown and I was treated poorly about trying to change my ticket. I now can’t go because I can’t afford to change ticket and the waiver documents I need to do so sounds like it’s just another excuse from the airline for not honoring my ticket. I can’t go now because of passport, but I can’t go because I am unable to buy another ticket

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.

Wed, May 2
DEN
IAD
3h 17m
Wed, May 9
IAD
DEN
3h 52m
Trip: 8 days
Overall 0.0 Poor
Based on 0 reviews
Mon, May 7
DEN
IAD
3h 17m
Sat, May 12
IAD
DEN
3h 52m
Trip: 6 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 4.3

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

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 6.0

Clean

You have pay for everything except water.

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.

Wed, Mar 14
DEN
IAD
3h 15m
Tue, Mar 20
IAD
DEN
3h 57m
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
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
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
Good 6.0

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

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.

Tue, May 8
DEN
IAD
3h 17m
Sat, May 12
IAD
DEN
3h 52m
Trip: 5 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 6.0

Clean

You have pay for everything except water.

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
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
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.

Tue, Mar 6
DEN
IAD
7h 26m
Tue, Mar 13
IAD
DEN
6h 23m
Trip: 7 days
7.2GoodShow reviews
Overall 7.2 Good
Based on 28211 reviews
Overall
7.4
Boarding
7.5
Comfort
7.1
Crew
7.8
Entertainment
6.7
Food
6.7
CLT
ILM
Mediocre 3.0

Three hours delay. I paid for a upgrade to first class. But because of the flight change i didn't get to keep my upgrade and I had to beg for a refund. I have had two trips in the past 5 days and all flights have been anywhere from 1 to 3 hours late. Worst experience with AA I have had in a long time.

SJU
MIA
Excellent 9.3

New onboard entertainment

CLT
LGA
Excellent 10.0

Ability to upgrade to first class

Security taking forever

ORD
CLT
Mediocre 3.0

Three hours delay. I paid for a upgrade to first class. But because of the flight change i didn't get to keep my upgrade and I had to beg for a refund. I have had two trips in the past 5 days and all flights have been anywhere from 1 to 3 hours late. Worst experience with AA I have had in a long time.

DFW
FLL
Excellent 8.0

No issues at all

N/A

Wed, Mar 7
DEN
DCA
7h 01m
Mon, Mar 19
DCA
DEN
4h 11m
Trip: 12 days
Overall 0.0 Poor
Based on 0 reviews
Wed, May 9
DEN
IAD
3h 17m
Sat, May 12
IAD
DEN
3h 52m
Trip: 4 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
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
Okay 4.3

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

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

Tue, Apr 10
DEN
DCA
5h 31m
Sun, Apr 15
DCA
DEN
5h 35m
Trip: 6 days
7.2GoodShow reviews
Overall 7.2 Good
Based on 28211 reviews
Overall
7.4
Boarding
7.5
Comfort
7.1
Crew
7.8
Entertainment
6.7
Food
6.7
SJU
MIA
Excellent 9.3

New onboard entertainment

JAX
DFW
Excellent 8.6

Polite. Clean. Nice business class.

Would like more Western food.

LHR
ORD
Mediocre 2.0

Nothing really. I will never book from Kayak ever

Everything

DCA
CLT
Excellent 8.6

My wife is hypoglycemic and requires food. The flight was so early that none of the terminal restaraunts were open, nor did the plain have food for any passengers accept first class. I've purchased a box on other flights, but this one did not provide an option for a box lunch or breakfast.

DFW
FLL
Excellent 8.0

No issues at all

N/A

Tue, Apr 10
DEN
IAD
6h 59m
Tue, Apr 17
IAD
DEN
3h 59m
Trip: 8 days
Overall 0.0 Poor
Based on 0 reviews
Mon, May 14
DEN
IAD
3h 17m
Tue, May 22
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 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 6.3

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
Good 6.0

Clean

You have pay for everything except water.

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
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

Tue, Apr 10
DEN
DCA
5h 31m
Sun, Apr 15
DCA
DEN
5h 35m
Trip: 6 days
7.2GoodShow reviews
Overall 7.2 Good
Based on 28211 reviews
Overall
7.4
Boarding
7.5
Comfort
7.1
Crew
7.8
Entertainment
6.7
Food
6.7
PHX
GEG
Good 7.3

The crew was friendly and informative. They were very helpful. The

The seats were uncomfortable. They were hard and so narrow I had to sit crooked in the seat to keep from getting banged into by the service carts and every person going by to the bathrooms. I'm not tiny, but I'm not huge either, it was just overcrowded. It was also very hot in the airplane the entire way from Phoenix to Spokane. My husband, who is always cold, was even hot.

LHR
JFK
Excellent 9.3

Great flat beds, entertainment, noise cancelling headphones. Awesome 3 course meal.

Could have made the bar area more exciting ... as Virgin Atlantic bars do.

DCA
CLT
Excellent 8.6

My wife is hypoglycemic and requires food. The flight was so early that none of the terminal restaraunts were open, nor did the plain have food for any passengers accept first class. I've purchased a box on other flights, but this one did not provide an option for a box lunch or breakfast.

JAX
DFW
Excellent 8.6

Polite. Clean. Nice business class.

Would like more Western food.

ORD
CLT
Mediocre 3.0

Three hours delay. I paid for a upgrade to first class. But because of the flight change i didn't get to keep my upgrade and I had to beg for a refund. I have had two trips in the past 5 days and all flights have been anywhere from 1 to 3 hours late. Worst experience with AA I have had in a long time.

Tue, Apr 17
DEN
IAD
6h 59m
Mon, Apr 23
IAD
DEN
3h 46m
Trip: 7 days
Overall 0.0 Poor
Based on 0 reviews
Mon, May 21
DEN
IAD
3h 17m
Wed, May 30
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
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
Good 6.0

Clean

You have pay for everything except water.

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
Okay 4.3

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

Wed, Apr 11
DEN
DCA
5h 31m
Sun, Apr 15
DCA
DEN
5h 35m
Trip: 5 days
7.2GoodShow reviews
Overall 7.2 Good
Based on 28211 reviews
Overall
7.4
Boarding
7.5
Comfort
7.1
Crew
7.8
Entertainment
6.7
Food
6.7
LHR
JFK
Excellent 9.3

Great flat beds, entertainment, noise cancelling headphones. Awesome 3 course meal.

Could have made the bar area more exciting ... as Virgin Atlantic bars do.

SJU
MIA
Excellent 9.3

New onboard entertainment

JAX
DFW
Excellent 8.6

Polite. Clean. Nice business class.

Would like more Western food.

ORD
CLT
Mediocre 3.0

Three hours delay. I paid for a upgrade to first class. But because of the flight change i didn't get to keep my upgrade and I had to beg for a refund. I have had two trips in the past 5 days and all flights have been anywhere from 1 to 3 hours late. Worst experience with AA I have had in a long time.

DCA
CLT
Excellent 8.6

My wife is hypoglycemic and requires food. The flight was so early that none of the terminal restaraunts were open, nor did the plain have food for any passengers accept first class. I've purchased a box on other flights, but this one did not provide an option for a box lunch or breakfast.

Wed, Mar 14
DEN
DCA
7h 00m
Mon, Mar 19
DCA
DEN
4h 11m
Trip: 6 days
Overall 0.0 Poor
Based on 0 reviews

Colorado to Washington Flight Information

Flights Arrive in Washington
Flights Depart from Colorado
Flight Price $139
Airlines United, Frontier, American Airlines
*
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