IAD - DEN

$89 Find Cheap Flights from Washington Dulles Airport to Denver

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 Denver departing on 9/6. 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

KAYAK searches hundreds of travel sites at once for deals on flights to Denver

 
These are the airlines KAYAK users have selected most often from within our search results in flight searches from Washington, D.C. to Denver, as well as popular online travel agencies
These are the airlines KAYAK users have selected most often from within our search results in flight searches from Washington, D.C. to Denver, as well as popular online travel agencies
Travelers love KAYAK
41,299,237 searches in the past 7 days on KAYAK

Save 20% or moreCompare multiple travel sites with one search.

Track pricesNot ready to book? Create a price alert for when prices drop.

Bundle and saveSave money when you bundle your flight + hotel.

Filter your dealsChoose cabin class, free Wi-Fi and more.

Flights Deals
Expert advice
Useful Info
Flights Deals

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

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

Sat, Aug 16 - Wed, Aug 20
Southwest Logo
5:05 pm - 6:55 pmIAD-DEN
3h 50mnonstop
Southwest Logo
8:20 am - 1:40 pmDEN-IAD
3h 20mnonstop
$177Southwest
Find Deal
Sat, Aug 9 - Sat, Aug 16
United Airlines Logo
8:06 pm - 9:57 pmIAD-DEN
3h 51mnonstop
United Airlines Logo
6:01 am - 11:27 amDEN-IAD
3h 26mnonstop
$187United Airlines
Find Deal
Sat, Sep 13 - Sat, Sep 13
American Airlines Logo
5:40 pm - 10:09 pmIAD-DEN
6h 29m1 stop
American Airlines Logo
11:59 pm - 8:46 amDEN-IAD
6h 47m1 stop
$191American Airlines
Find Deal
Wed, Sep 24 - Sat, Sep 27
American Airlines Logo
5:40 pm - 10:09 pmIAD-DEN
6h 29m1 stop
American Airlines Logo
2:45 pm - 10:49 pmDEN-IAD
6h 04m1 stop
$195American Airlines
Find Deal
Tue, Sep 9 - Sun, Sep 14
Southwest Logo
2:25 pm - 4:05 pmIAD-DEN
3h 40mnonstop
Southwest Logo
7:30 pm - 12:55 amDEN-IAD
3h 25mnonstop
$197Southwest
Find Deal
Thu, Sep 4 - Sun, Sep 7
Frontier Logo
3:00 pm - 8:33 amIAD-DEN
19h 33m1 stop
Frontier Logo
12:34 am - 2:15 pmDEN-IAD
11h 41m1 stop
$215Frontier
Find Deal
Wed, Nov 19 - Sun, Nov 23
United Airlines Logo
5:18 pm - 7:20 pmIAD-DEN
4h 02mnonstop
United Airlines Logo
5:56 pm - 11:15 pmDEN-IAD
3h 19mnonstop
$223United Airlines
Find Deal
Mon, Jul 14 - Wed, Jul 16
Frontier Logo
9:58 pm - 8:21 amIAD-DEN
12h 23m1 stop
Frontier Logo
12:34 am - 6:28 pmDEN-IAD
15h 54m1 stop
$225Frontier
Find Deal
Tue, Jul 15 - Tue, Jul 22
Delta Logo
5:23 pm - 11:06 pmIAD-DEN
7h 43m1 stop
Delta Logo
12:55 am - 8:59 amDEN-IAD
6h 04m1 stop
$237Delta
Find Deal
Fri, Jul 11 - Mon, Jul 14
Delta Logo
7:45 am - 3:00 pmIAD-DEN
9h 15m1 stop
Delta Logo
12:55 am - 8:59 amDEN-IAD
6h 04m1 stop
$247Delta
Find Deal
Expert advice

Expert advice for your flight from Dulles Intl to Denver

 
Snippets provided in this section are AI-generated based on a summarization of KAYAK-commissioned articles. The articles are presented as-is, for general informational purposes only, and may not be up-to-date. The opinions contained in the articles are original to the author and reflect their authentic experience, which may vary significantly from the experience of others.
KAYAK teamed up with top travel experts to share the best tips for your journey.
Airlines
United Airlines

United's Economy Plus offers up to six inches more legroom than standard economy seats.


United's Priority Boarding puts you in Zone 2, avoiding gate-checking your carry-on bag.

Southwest

Southwest offers two free checked bags up to 50 pounds each, including bulky items.


Set an alarm to check in 24 hours before for a better boarding position.

Read more about Southwestby Blane Bachelor
Airports
IAD

For a smooth departure from IAD, use the AeroTrain for quick access between terminals and check an airport map to plan your route.

Read more about IADby Stefanie Waldek
DEN

Upon arrival at DEN, take the RTD A line train for a cost-effective 40-minute trip to downtown Denver.

Read more about DENby Harriet Baskas
Our travel experts
Stefanie Waldek

Stefanie Waldek

Expert on United Airlines and IAD

Stefanie Waldek

Stefanie Waldek

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.

Read more
Blane Bachelor

Blane Bachelor

Expert on Southwest

Blane Bachelor

Blane Bachelor

Blane Bachelor is a journalist and editor specializing in travel and aviation who writes regularly for top global outlets. Born and raised in Florida, Blane has worked and lived in four countries, including the Netherlands, where she’s currently based with her family. Her favorite way to get to know a new destination is by running or riding a bike around town – or hearing a spooky ghost story about local history. She will always choose the window seat.

Read more
Harriet Baskas

Harriet Baskas

Expert on DEN

Harriet Baskas

Harriet Baskas

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.

Read more
Useful Info

KAYAK's insights & trends for Dulles Intl to Denver flights

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

Find cheap flights to Denver
Find cheap flights to Denver

Planning a trip from Dulles Intl to Denver? KAYAK’s data-powered insights will help you find cheap flights. Learn the best time to fly, how early to book your ticket, and other tips to secure great prices.

What’s the cheapest day of the week to fly from Washington Dulles Airport to Denver?

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

For Washington Dulles Airport to Denver, Wednesday is the cheapest day to fly on average and Sunday is the most expensive. Flying from Denver back to Washington Dulles Airport, the best deals are generally found on Friday, with Saturday being the most expensive.

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

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 Denver, 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 Denver is January, where tickets cost $301 (return) on average. On the other hand, the most expensive months are December and June, where the average cost of round-trip tickets is $434 and $380 respectively.

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

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 Denver, 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 Denver, you should book around 3 weeks before departure. For the absolute cheapest price, our data suggests you should book 10 weeks before departure.

Good to know

Low seasonJanuary
High seasonJuly
Cheapest flight$89
Best time to beat the crowds with an average 13% drop in price.
Most popular time to fly and prices are also 0% lower on average.
Flight from Washington Dulles Airport to Denver

When to book flights from Dulles Intl to Denver

Are your dates flexible? Find out the best times to travel from Dulles Intl to Denver 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 Denver flights

  • Where can passengers in IAD freshen up?

    Passengers who want to freshen up can take showers. Air France-KLM and British Airways lounges offer showers services. Air France-KLM is located opposite gate A22 concourse A in the midfield terminal, while British Airways lounge is located at concourse B in the midfield terminal. Passengers can also have massages at gate A20, concourse A on the airside. You can also have manicures, pedicures and massages in gate A32 on concourse B.

  • Where can passengers get help from IAD airport?

    If you want help, you can visit the information desks on the landside at baggage claims 6, 11 and 14 and on the airside, near gates A15, B62, C17 and D16. There is also an organization known as Traveler's Aid that helps lost passengers by answering their questions. They are located at the baggage claim areas adjacent to carousels 6, 12 and 14. In concourses A, B, C, C7 and D, mobile guides are walking around.

  • Are there pet relief areas located at the departure and arrival airports?

    If you are traveling with your pet and wondering where you can find pet relief areas in DEN, they are located on each concourse and another outside the terminal. IAD also has pet relief areas near carousel 1, baggage claim areas, arrivals level, door 1 near AeroMexico counter and door 16 United Airlines Counter on the landside. On the airside, they are situated at gates D1 and A32.

  • Where in IAD airport can you relax before your flight?

    If you are at IAD, take advantage of the lounges inside the airport. Payment can be made at the door and you can purchase a lounge pass or a lounge membership program. Lounges in IAD include KLM lounge opposite gate A22, concourse A on the midfield terminal, British Airways Galleries lounge in concourse B, and airside on the midfield. If you are a military officer, USO lounge offers free services to military officers and their families. It is located across from baggage claim 11 and 12, arrivals level on the main terminal.

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

    In the last 3 days, the lowest price for a flight from Washington, D.C. Dulles Intl Airport to Denver was $89 for a one-way ticket and $177 for a round-trip.

  • Do I need a passport to fly between Washington Dulles Airport and Denver?

    No

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

    Hawaiian Airlines, Alaska Airlines, Delta, and American Airlines offer inflight Wi-Fi service on the Washington Dulles Airport to Denver flight route.

  • Which aircraft models fly most regularly from Washington Dulles Airport to Denver?

    The Boeing 737 MAX 8 is the aircraft model that flies most regularly on the Washington Dulles Airport to Denver flight route.

  • Which airline alliances offer flights from Washington Dulles Airport to Denver?

    Star Alliance is the only airline alliance operating flights between Washington Dulles Airport and Denver.

  • On which days can I fly direct from Washington Dulles Airport to Denver?

    There are nonstop flights from Washington Dulles Airport to Denver on a daily basis.

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

    The two airlines most popular with KAYAK users for flights from Washington, D.C. to Denver are Southwest and Delta. With an average price for the route of $312 and an overall rating of 8.0, Southwest is the most popular choice. Delta is also a great choice for the route, with an average price of $268 and an overall rating of 8.0.

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

    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 Denver.

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

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to Denver 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 Denver?

    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 Denver with an airline and back to Washington Dulles Airport with another airline. Booking your flights between Washington Dulles Airport and DEN 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 Denver?

    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 Denver 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 Denver

  • Looking for a cheap flight? 25% of our users found flights on this route for $167 or less one-way and $293 or less round-trip.
  • Dulles International Airport (IAD) has airport cars and limo services that are licensed fully and have well-trained drivers who know the geography of the area well. They provide reliable and affordable transport to and from the airport. They offer services 24/7, ready to meet all the transport needs of the travelers.
  • IAD airport has nursing rooms for breastfeeding mothers. The nursing rooms are located at the main terminal landside, across from Baggage Claims 2, 6,11 and 14 and on the airside, gates A20, B70, C11 and D1. The room has comfortable sitting areas, a conducive environment for breastfeeding.
  • If you are traveling with kids, there are play areas in IAD Concourse B, near gate B70. It provides children with all kinds of games, and this keeps them busy as you wait for the flight.
  • If you want a place at IAD airport where you can buy food, there are over 30 food and beverage concessions at the airport. Some restaurants are open 24h, including Capitol Grounds, Cafe Americana and Starbucks on the landside. On the airside, there is Bistro Atelier Grab and Go in gate D 14, concourse D, Capital City Ink in gate C14, concourse C and Dulles Gourmet Market in gate D5, concourse D.
  • If you want a quiet and peaceful place to collect your thoughts after arriving at Denver International Airport (DEN), there is an Islamic masjid and an interfaith chapel. The chapel is located at level 6, east of Jeppesen terminal.

Prefer to fly direct from Washington Dulles Airport to Denver?

Find which airlines fly direct from Washington, D.C. Dulles Intl Airport to Denver Intl Airport, which days they fly and book direct flights.

Direct departures

Washington, D.C. Dulles Intl to Denver Intl

Monday

Avianca, Brussels Airlines, Copa Airlines, +4 more

Avianca, Brussels Airlines, +5 more

Tuesday

Avianca, Brussels Airlines, Copa Airlines, +4 more

Avianca, Brussels Airlines, +5 more

Wednesday

Avianca, Brussels Airlines, Copa Airlines, +4 more

Avianca, Brussels Airlines, +5 more

Thursday

Avianca, Brussels Airlines, Copa Airlines, +4 more

Avianca, Brussels Airlines, +5 more

Friday

Avianca, Brussels Airlines, Copa Airlines, +4 more

Avianca, Brussels Airlines, +5 more

Saturday

Avianca, Brussels Airlines, Copa Airlines, +4 more

Avianca, Brussels Airlines, +5 more

Sunday

Avianca, Brussels Airlines, Copa Airlines, +4 more

Avianca, Brussels Airlines, +5 more

See more direct flights

Direct returns

Denver Intl to Washington, D.C. Dulles Intl

Monday

Avianca, Brussels Airlines, Copa Airlines, +4 more

Avianca, Brussels Airlines, +5 more

Tuesday

Avianca, Brussels Airlines, Copa Airlines, +3 more

Avianca, Brussels Airlines, +4 more

Wednesday

Avianca, Brussels Airlines, Copa Airlines, +4 more

Avianca, Brussels Airlines, +5 more

Thursday

Avianca, Brussels Airlines, Copa Airlines, +4 more

Avianca, Brussels Airlines, +5 more

Friday

Avianca, Brussels Airlines, Copa Airlines, +3 more

Avianca, Brussels Airlines, +4 more

Saturday

Avianca, Brussels Airlines, Copa Airlines, +4 more

Avianca, Brussels Airlines, +5 more

Sunday

Avianca, Brussels Airlines, Copa Airlines, +3 more

Avianca, Brussels Airlines, +4 more

See more direct flights
See more direct flights

Top 5 airlines serving from Dulles Intl to Denver

 
See real verified KAYAK customer reviews for airlines flying from Washington, D.C. to Denver. 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 Denver? 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 4287 reviews
7.1Food
8.2Boarding
8.0Comfort
7.6Entertainment
8.6Crew
Airline reviews

Southwest is typically delayed, and it gets wearisome. It is no longer a discount airline and you get way less than you pay for when it comes to comfort and Ce.

6.0 GoodDavid, Jun 2025BWI - COS
Read more Southwest reviews

Southwest is typically delayed, and it gets wearisome. It is no longer a discount airline and you get way less than you pay for when it comes to comfort and Ce.

We sat on the plane on the tarmac for 4 hours.

I'm not a fan of Southwest's model. I don't like the herding style of boarding.

Flight crew and cabin crew were great. I had to rearrange flights because my original flight was 3hrs delayed for weather, the rub is the flight I moved to boarded on time then we sat at the gate for 2 hours because scheduling stole our first officer for another flight, TWICE. Then our actual FO was an hour delayed. To make it worse my original flight went from a 3 hour delay to departing 15min EARLY. Just poor scheduling operations all around.

Bring back peanuts Take our drink orders when were all seated, especially after you switch to assigned seating.

Staff was far less than helpful at all times. Departure and arrival times mean nothing to Southwest. Extremely disappointed, will never fly with them again, and I’ll be sure to share my experience with all.

It is southwest seat was ok. Not the most comfortable seat

I’ve always loved Southwest. No issues at all. I was flying standby and the gate agent was extremely friendly and helpful. Boarding was smooth and I was able to get a window seat in the emergency exit row. Crew was fantastic! They were very professional and accommodating. We had to divert from our destination due to weather but the flight crew kept everyone at ease and informed us of all pertinent information. Excellent flight

The price of the tickets isn't matching the flight experience. No matter how long the flight is, you're only getting pretzels. The flight attendants looked unkept and over it.

Plz don't take away free bags and free seating

Great service. Flight was delayed while we sat on the runway for a couple of hours. Weather related. Staff made is very bearable. The steward servicing the first class cabin was exceptional. Thank you! 💗

5 hours of delay that could've been much shorter if Delta had taken the 1 hour delay they imposed on the flight before boarding to run any of the plane checks required for flight to find the hydraulic issue that required nearly 3 hours to fix. $24 of meal credit buys a sandwich and a soft drink. Poor communication within the terminal about what gate we'd be re-boarding from and when we'd be re-boarding.

Amazing flight! I have never noticed the uniforms of the attendants before in twenty years of flying except today when one female had the most amazing dress on. It was beautifully designed and showed she was in charge. I never dreamed I would google who designed Delta uniforms . The ultimate compliment is when another woman admires your outfit. . I hope your designer puts it on the market

It would be nice if was given wires ear buds. Overall was a good experience was able to sleep on the plane

My flight was 6 pm 6/6. Every hour they delayed it again - air condition issues then no pilot then the crew had worked too many hours and cancelled the flight at 11 pm. Sent customers to NJ a 45 minutes uber ride to a hotel. Had to be back by 5 am for a 7 am flight and again no pilot etc with another three hours of delays.

The entertainment and wifi mostly didn't work on this flight.

Terrible entertainment system - kept freezing and audio kept cutting out. Snacks were mediocre at best for a 5 hour flight.

The check in and bag drop off for Sky Priority members is slow. The Clear security was also slow - a TSA issue.

I am still upset that my bag was lost on a recent trip to Rome ; we were inconvenienced and out €150 Euros ; delta has refused to reimburse us

I am very bothered by the events today. I can't believe the flight attendants allowed someone to take my seat and made me move. It was embarrassing. I was in the right. The lady just didn't want move. I can't believe delta would allow this to stand and disrespect my rights as a passenger. The lady complained about her leg and that she couldn't move. Firstly somehow she was able to make it to row 24. Not sure how much her leg could have hurt. Secondly, I'm in plenty of pain myself. I just finished chemotherapy a several weeks ago. My body is constantly sore. Yet deltas flight attendants didn't appropriately protect my rights. In the end they found me a seat on the plane but I want to understand how delta can operate this way. They in essence allowed a bully to get their way.

I was supposed to be on business class at first class from Denver back to Miami due to weather changes. I missed my connection and it’s put on a flight to Fort Lauderdale. Instead of honoring my business class/1st class ticket, they put me in coach, but there were two first class seats open. I think it’s absolutely disgusting that I paid for first class $1300 ticket and they put me in economy and they had to open seats available and I have still not been refunded the difference. I ended up having to eat a snack box instead of the meal I was supposed to get and did not get home till 2 AM so I think that’s a little pathetic that I had to live off crackers for dinner And my poor dog ate some cheese and salami. Oh yes, apparently when they switched me to the new flight they forgot to mention I had a service dog

Excellent service despite turbulence during the flight. Flight attendants were remarkable!

Flight attendant moved my bag without notifying me and was rude to me when I asked him about it. There was no reason to move it.

Food choices were very limited. Taste of the dishes was average.

I liked all the informational texts. I always knew where to go and when .

Received an email the night before showing that there would be seatback entertainment on our flight. We get on and there was no seatback entertainment. And then it was a scramble to try to set up the iPads for the kids before takeoff so they could watch something for the four hour flight.

The reason I don’t fly United. No in seat entertainment for a long flight and inconsistent WiFi and entertainment available from my device.

It was a good flight. Nothing comes to mind about how it could have been better. It was a newer plane, seemed like a great upgrade from your older ones. Staff was very good as well.

The food for long haul was poor compared to Singapore airlines economy. Pasta plain with tomato sauce . Singapore airlines give me Hagen dash small ice cream cup it was great. The choices of dinner course Singapore air also much better The crew mostly friendly. The economy seat are as expected.

The plane was clean. The staff was excellent. The flight attendants were very good. Enjoyable flight. Overall. The seats in the back are too small but, will always be.

Pitch was very small. Knees were on the seat back in front of me.

Terrible. The flight was delayed two hours due to weather. Then when we got on the plane, the first pilot ended up timing out and we had to wait for a second pilot. Second pile came on board and we tax it out. Had to return back to the gate because of an unruly passenger. Then the copilot timed out. Had to wait for new copilot. Also had to wait for maintenance to check for fuel. Then found out the second pilot timed out and we had to wait for a third pilot. Was ready to go and then needed maintenance again for another issue. In the end, it was 2 o’clock in the morning when they announced that the flight couldn’t go because the third pilot and the second copilot had timed out.

Wonderful as usual except for other guests that were unruly and not kept in check by the Crew.

The flight was initially delayed, then cancelled. American Airlines says the cancellation was weather related, though the actual weather was not bad in both Washington and Providence and between. There were very few cancellations that day. In fact, AA2120 from Washington, DC to Boston flew with a minor delay at about the same time. So, the weather somehow affected only this particular flight AA5230. The next available flight was the following morning. The American Airlines refused to reimburse accommodation (hotel at DCA)

Fine. On time, cabin service was fine, bag arrived. All good. Flying into DCA so did not collide with any helicopters, which is also good. Horrid incident that could have and should have been prevented.

Good experience but the snacks are not gluten free, so I cannot eat them.

Standard. No different than a discount carrier on a short trip.

Everything was great. Boarding, early departure, early arrival, and deplaning were smooth. Smooth flight.

One of the best flights I’ve had. So smooth.

I blame kayak for my last trip to dca. Kayak cancelled my direct flight and put on a one stop flight and made lost whole day from my vacation and had not even refunded my ticket.

I liked the turn-style feature at gate 209B at LAX. Very efficient process. The gate staff also made several, clearly directed announcements so I felt very informed.

Seats are uncomfortable but price is good. Guess I can put up with misery for four hours.

The plane failed preflight inspection, so we sat there for 90 mins while they tried to fix it. Ultimately, everything was remedied and we made our connecting flight; instead of a 2 hour layover at the airport, we spent it waiting on the plane.

I loked walking out on the tarmac to board and no first class. I didn't like that they have no snacks or onboard wifi to bide your time.

The seats were extremely hard and uncomfortable. It was disappointing even for a budget airline.

Delayed each time on a round trip with no significant weather interference. Updates to flight times came after the fact. 30 min behind in boarding and board and phone still show an on time departure. Some mysterious extra 300 miles that came so surprising they had to fuel while we were already on board?

Our flight was canceled for no known reason. We weren’t told until we were checking in at 5:00 am. This was after our last flight with Frontier where we sat on the plane for three hours (not an exaggeration) before we took off because of a mechanical issue. We won’t be flying Frontier again.

Allowed me to chose my seat without extra charge (I purchased full-price ticket) and boarding was in group1. Didn't even serve water.

Stuck in Phoenix for two days, not even a hotel voucher offered.

Every day about it was very different all the boarding pass where all wrong l miss flight no refund all crazy

Everything you need to know for your flight from Dulles Intl to Denver

Information on your arrival and departure airports

Not what you’re looking for? Find thousands of other hotels, flights, car rentals and package deals with KAYAK.