Frontier's Economy Bundle includes a carry-on bag and Standard seat choice.
Avoid Basic Fare to prevent middle seat assignments; consider Economy Bundle for seat selection.
Planning a trip from Denver to Las Vegas? 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.
When planning a trip from Denver to Las Vegas, there are several ways to potentially save money on your flight. Generally, Tuesday is the cheapest day of the week to fly, while September is the cheapest month.
Book Early: Prices tend to be lower when booking at least two weeks in advance.
Choose Frontier: Frontier Airlines typically offers the cheapest flights for this route.
Direct Flights: Direct flights are more expensive, consider flights with layovers to save money.
Fly Tuesday: Tuesday is generally the cheapest day to fly.
Travel in September: September is typically the cheapest month to fly.
This feature is powered by ChatGPT: an OpenAI-developed artificial intelligence model trained with KAYAK proprietary data and third-party data not verified by KAYAK.
Low season | February |
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High season | May |
Cheapest flight | $34 |
Find which airlines fly direct from Denver Intl Airport to Las Vegas Harry Reid Intl Airport, which days they fly and book direct flights.
Direct departures
Denver Intl to Las Vegas Harry Reid Intl
Monday
Air Canada, Copa Airlines, Frontier, +4 more
Air Canada, Copa Airlines, +5 more
3
4
Tuesday
Air Canada, Copa Airlines, Frontier, +3 more
Air Canada, Copa Airlines, +4 more
2
3
Wednesday
Air Canada, Copa Airlines, Frontier, +4 more
Air Canada, Copa Airlines, +5 more
3
4
Thursday
Air Canada, Copa Airlines, Frontier, +4 more
Air Canada, Copa Airlines, +5 more
3
4
Friday
Air Canada, Copa Airlines, Frontier, +4 more
Air Canada, Copa Airlines, +5 more
3
4
Saturday
Air Canada, Copa Airlines, Frontier, +4 more
Air Canada, Copa Airlines, +5 more
3
4
Sunday
Air Canada, Copa Airlines, Frontier, +4 more
Air Canada, Copa Airlines, +5 more
3
4
Direct returns
Las Vegas Harry Reid Intl to Denver Intl
Monday
Air Canada, Copa Airlines, Frontier, +4 more
Air Canada, Copa Airlines, +5 more
3
4
Tuesday
Air Canada, Copa Airlines, Frontier, +3 more
Air Canada, Copa Airlines, +4 more
2
3
Wednesday
Air Canada, Copa Airlines, Frontier, +4 more
Air Canada, Copa Airlines, +5 more
3
4
Thursday
Air Canada, Copa Airlines, Frontier, +4 more
Air Canada, Copa Airlines, +5 more
3
4
Friday
Air Canada, Copa Airlines, Frontier, +4 more
Air Canada, Copa Airlines, +5 more
3
4
Saturday
Air Canada, Copa Airlines, Frontier, +4 more
Air Canada, Copa Airlines, +5 more
3
4
Sunday
Air Canada, Copa Airlines, Frontier, +4 more
Air Canada, Copa Airlines, +5 more
3
4
Booked a premium seats weeks ago and got an email the night before that id instead be seated in the cabin. Only reason I booked this overnight flight was for the better seating. All they are doing to compensate is giving a $29 coupon to use on another flight. I won’t be booking this airline again.
Booked a premium seats weeks ago and got an email the night before that id instead be seated in the cabin. Only reason I booked this overnight flight was for the better seating. All they are doing to compensate is giving a $29 coupon to use on another flight. I won’t be booking this airline again.
It was all great all around. Will travel with Alaska next trip.
I got the last seat on the plane, in the back in the corner against the window, and I paid a competitive price for my ticket several weeks before the flight.
Everything was good. However, the selections of movies and TV shows were boring and unexciting. It was disappointing.
Long delay before boarding. By the time I was informed of the delay I was already at the gate.
There was no seating at the gate, no where to charge your devices, super crowded. Boarding in group F meant all luggage space was taken when it was time for me to board. The boarding crew was short with everyone and seemed irritated. The luggage space was insufficient, the seat was too small for me (6'4") and very uncomfortable trip. I was in a middle seat between a person snoring the whole trip and a person with very strong body odor. The flight crew was terse and unfriendly, seemed irritated and impatient. Yelled a lot at people with earbuds in, understandable. Finally, we arrived 10 minutes early, only to sit on the tarmac for 20 minutes and wait for a gate. Worst flight experience I've had in years.
I made a mistake. Read what I wrote in the flight from Dulles to SEA. The negative experience was from SEA to BOI. Total garbage. Wont do it again.
Flight 351 SEA to BOI was terrible. We got to cruising altitude and I needed to use the restroom but the fasten seatbelt sign never came off. There was no turbulence and I'd felt the plane level off so I stood up to use the restroom about 15 minutes after we leveled off. The stewardess went over the intercom and said I needed to be seated because the captain hadn't turned off the fasten seatbelt sign....Which... Fair.... But not five minutes later she went and used the bathroom. Felt very unprofessional to leave a paying customer with a burning urethra for the entire flight and bark at them to sit down and still use the bathroom yourself. They never did turn off the seatbelt sign.
For longer trips, snacks are puny, boring and don’t have ANY nutritional value.
One of the worst check-in experiences ever. Apparently, we were overweight and had to completely repack. They tried to charge us an extra $35 per bag on top of the standard checked baggage fee we had already paid in advance. Surprisingly, we managed to fit everything into our carry-ons and stayed under their precious 50-pound limit. (By the way, 23 kg is actually 50.7 lbs, so we couldn’t even go slightly over 50 according to the very unfriendly agent.)
I would have liked to arrive on time - not 5 hours late!
1.5 hour delay, poor service, no compassion from the crew. Terrible experience
Very good. Sad to learn Southwest is going start to charge for bags
Our flight was diverted from being a non-stop to getting within 150 miles and requiring another plane. We heard 4 or 5 different versions from SW as to why we had to stop, then wait for a replacement plane. Five hour delay, weather did not come up as a single excuse.... communication was not clear and well explained. No one really took charge!
Great flight staff. Ease of boarding. Overall, very uneventful and easy trip.
I really like open seating. I hate that I've heard this is going away. This is one of the unique things that makes Southwest my goto choice.
We had a nice flight. Boarding was easy, our seats were comfortable and the on board service was pleasant.
It seems as though the provisions are even less. Although SWA used to be an economy Airline, that isn't really the case anymore. I paid over $700. for a round trip to Denver and I could have flown just about any airline for the price. The drinks are now in a 6-ounce cup and with ice I'm sure a can would fill more than 2 cups. However, I am very proud of SWA for using paper rather than continuing to contribute to the millions of plastic cups being used each day. I've thought of this fr many years and am so glad to see it come to fruition, if not by only SWA so far.
I used to fly SWA all the time. I know the crew has their little acts that are often fun, and entertaining. On this flight one of the crew was just not nice. Very surprising.
My original flight was extremely delayed but I was able to join the standby list for an earlier flight. I was grateful for this feature but I wish I could’ve gotten my standby confirmation sooner.
Delta is my preferred airline. I've traveled with them for years. On time in most cases, good communication, easy to use app. Most planes are pretty nice. I was on a CRJ 700/900 however, which was pretty badly aged inside and needed a refresh. No infotainment, unreliable wifi, best to download before boarding or bring a book. Food choices are really just snacks on this flight, nice variety but about what you'd expect. Great staff and prompt in departure and early arrival too. Overall quite satisfied.
Crew was friendly Love the entertainment in the seat head rest.
Delta flight was on time, seats were comfortable, and crew was nice.
This had nothing to do with Delta… The flights were on time and flawless. The service was excellent. We purchased seats in (aisle/middle) comfort plus since this was a cross country flight. Unfortunately, the woman seated at the window was 300+ pounds and, as might be expected, covered up about a third of the middle seat also. there was absolutely nothing that Delta could have done about that… I just don’t know what the answer should be. If you purchase a seat, you should should be able to use the entire seat and not just the portion that someone else is not sitting/oozing in. Disappointing…there should be something that could be done….I'm just not sure what solution could be.
Delayed take-off. Very small plane so very scary with lots of bumps during the flight. Would never fly Delta on short flights in small 80 seaters plane again! Felt relieved when landed.
The worst part was I was NOT allowed in the lounge even though I was holding a first class ticket and have a premium American Express card. I have flown Business or First Class with many airlines. Delta is the ONLY one who does not extend this courtesy to anyone except people who hold the very expensive American Express card. As a result, I won’t fly Delta if I have any other choice.
A little bumpy ride . No food was being provided due the the turbulence. That was ok it was a short flight to my standards.
Simply outstanding. Their new lounge for Delta One customers is a cut above the rest.
The Dekta Rep that checked us in was great. She's very personable, pleasant, and can tell she enjoys her job.
The plane was old with small storage areas that had problems closing/latching and not enough storage for everyone, and worn, damaged seats. Service was great but feel a little unsafe on such well used planes.
Electric plugs didn't work. Entertainment system wasn't working
The design of the light switch on the arm rest is ridiculous.
The gate attendant let me walk right by her with a bag too big for the overhead compartment
My priority checked bag was not loaded on the flight. I had to sit in baggage claim in Las Vegas for 2 1/2 hours waiting for the next flight. All baggage staff were very helpful, tracking showed it as scanned for loading. Nobody told me why it wasn't on my flight.
First class felt like economy, seats were horrible, food was horrible, staff inattentive
Overall, it was a good experience. Boarding was good and there was plenty of overhead bin space for everyone’s carryons (even when we boarded toward the end). Only improvement would be to offer trash service more regularly.
David went above and beyond to make our flight the best that it could be
No food service almost missed because of first flight delays
Had a hard time finding my assigned seat. No attendants to assist.
The negative was the wait at the airport coming back. I checked my bags in, an hour before boarding and I get the notification that my flight was delayed. Rather had gotten the notification while I was at the hotel. Then it was delayed 3 x’s. Ugh!
The reps working at the airport counter were dumber than a second coat of paint.
My costume jewelry was stolen out of my bag. Got to airport and my bag weighed 45 pounds- 5 pounds over cost me $100 Long lines in tier one. No entertainment No WiFi no free drinks or snacks
I’ve never traveled on Frontier before. If you want basic, no frills, friendly service at great prices then give them a fly!
Landing in terminal 2, but my luggage is terminal 3. We (and others) were looking for it in terminal 1. We probably missed the crew broadcast, but the communication could have been clearer for non native (or elderly) passengers.
I was not permitted on my flight and had to purchase another flight ticket to Las Vegas.
Everything went as planned. Crew was great. Seats were still not that comfortable.
Better to put road truck seat in plain it so uncomfortable can not adjustable and fill metal don’t have cushions at all it’s very hard to travel for five hours
The airline used deceptive tactics to charge us more for our trip. Search Frontier Class Action Lawsuit to find out more or read the hundreds of reviews that have nearly identical stories.. don't fly this airline.. you've been warned.
they delayed my flight which ended up, causing my layover flight to leave without me, resulting in me missing a flight and having to stay overnight in Houston international. I got no compensation other than a flight to my original location only a day later. i’ve never experienced such a unprofessional situation
The seats were extremely hard and uncomfortable, even for a budget airline.
Average price | Average duration | |
---|---|---|
Flights | $474 | 1h 59m |
Buses | $172 | 15h 30m |
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