Find Cheap Flights from Houston to Denver (IAH - DEN)

Pros: It took off on time, boarding and exiting were faster than I’ve experienced on other airlines. I can’t ask for more and was really happy about it for that reason.

Cons: It’s a budget airline so entertainment was non existent, but that’s really not important to me.

Pros: I liked that the staff was very friendly and helpful

Cons: I dod not like that a price amount was added for everything extra

Cons: Our return flight was cancelled and we received no phone call or email of any kind letting us know. We had a wasted trip to the airport and my buddies vacation time was up the next day so it put him in the hot seat at work. They were very unprofessional at the check in counter while we were trying to figure out what to do. My friend who we were going to see in Denver had flown spirit a few months before to come see me in Texas. And he had some unnecessary issues also with delays and unprofessional personnel. I won't be using them again. Use a different airline.

Pros: The crew was funny. We did airplane yoga and they made jokes.

Pros: The crew was nice.

Cons: The airline charges for carry-on bag!

Cons: 4 hour delay with very few updates or help.

Cons: When I arrived two hours early to my flight, it was the first time I heard it had been cancelled. Apparently, due to weather. They said the only time they could get me out would be three days from then or they could refund me. No, they refused to pay for another ticket. So, I had to spend $435 on a ticket for later in the day when I had spent $130. Then, I look to Denver's weather and its perfect for the day. I call my mom, she's outside without a jacket! Where is the weather pray tell Frontier. This is the third and last time I ever use Frontier. Frontier is the worst airline I have ever used.

Pros: How attentive the crew was. They took time to explain the Frontier app in great detail and answered all my questions.

Cons: That you had to pay for one piece of luggage. I can see paying for two but not one.The rates are great but it was made up for in luggage charge and price of snacks and soda.

Cons: The Gates changed,Flight Delayed half an hour.

Cons: Limited overhead space

Pros: Safety of the flight, the route

Cons: The remote for the AV was so torn. I coukdnt even use it

Pros: They were OK

Cons: Terrible business class seating. You have to climb over your neighbor to go use the rest room.

Pros: I liked how peaceful it was. No crying or screaming children, no loud adults, no loud games. The flight crew were very polite, courteous, and showed compassion for the passengers. The air pressure wasn't to much. It was just right.

Cons: No reclining seats.

Pros: Not much

Cons: Cost of baggage Web site

Pros: I like the cost for the flight and everyone was very nice.

Cons: I did not like that there was a big delay in the departure of the fight, I did not get to my destination until very late; this caused me to miss several activities planned for my granddaughter's graduation. I would have liked for my bag to fly at a lower cost as well.

Cons: Not much leg room. They don't serve food. They have outrages bag fees. I don't recommend this airline to anyone.

Pros: Flight attendants were nice. Pilot had anger issues.

Pros: Everyone was so nice, from the sweet girl who checked our bags in Houston to all the flight attendants on the plane.

Cons: The girl in Houston could've used some help

Pros: On time. Smooth flight. Friendly crew. Comfortable seat.

Pros: Frontier is so cheap. Flight got cancelled and they didn't bother to text or email with alert. Said they could reschedule 5 days later. I'll never fly then again.

Cons: Everything

Pros: ANA Chicago to Tokyo was so awesome. Crew is super courteous and polite. Food is good even economy class. Good headphones were already in front of the seats. ANA is the one that you want to fly!

Pros: The crew and the food was good.

Cons: Flight was delayed and one of our bags was left in London.

Pros: Attendants were wonderful!

Cons: Baggage claim time - but that's a Philly issue.

Pros: Crew was friendly, food was delicious and flight was nice and smooth!

Cons: Plane was changed, lost all upgrades and assigned a random seat. One of the flight attendant had poor customer skills, was just rude overall.

Pros: Comfortable seat

Cons: Umm, maybe a tv in the headrest

Cons: Plane was old and dirty, would not recommend.

Pros: The 787 is a nice aircraft

Cons: It should not take 2 hours from touchdown to the terminal. The flight arrived early but by the time the last passenger made it to the terminal, they probably missed their connection.

Pros: Everything was pretty good. Plane was clean, boarding was fine. I think if you know going in, there are no extras, then you'll be perfectly content. Also, there was more room than expected so that was nice.

Cons: I have to say the crews going there and back could use a little more professionalism and customer service training. I don't wan't to blanket criticize all of them because I didn't come into contact with everyone of them as much as others, but I was put off by the flight attendants attitudes. They don't help as much as on other airlines and don't pass out food to everyone like on other airlines, so when I do order and pay for it, I expect a pleasant reaction, not to made feel like a burden.

Pros: It took off on time, boarding and exiting were faster than I’ve experienced on other airlines. I can’t ask for more and was really happy about it for that reason.

Cons: It’s a budget airline so entertainment was non existent, but that’s really not important to me.

Pros: Great overall experience, great price

Pros: I like the cost for the flight and everyone was very nice.

Cons: I did not like that there was a big delay in the departure of the fight, I did not get to my destination until very late; this caused me to miss several activities planned for my granddaughter's graduation. I would have liked for my bag to fly at a lower cost as well.

Pros: Price, seating, ease of booking

Cons: everyone on my flight had to wait over an hour for luggage at the destination, which put me way behind schedule.

Cons: They refused to be helpful in a situation that caused me to have to re-book my flight with another airline as well as book myself in a hotel for the night. The customer service wasn't helpful on the phone or in person. They even tried to quote to me multiple times how it was my fault that they left early.

Pros: Flights were on time

Cons: Didn't know it would cost me $80 to bring luggage with me. Would have liked to have known this explicitly in advance - I'm a graduate student and $80 is a lot of $ for me to spend without budgeting for it. Also - I needed to do school work while on the plane and the try tables weren't big enough to hold a computer.

Pros: Attendants were very polite

Cons: Waiting too long for the next fly.

Cons: Lste. Hot in cabin.

Pros: The plane was not cleaned prior to departure so the bathroom was disgusting. One of flight attendants cleaned it , probably not her job but appreciated. The staff was terrific with an exhausted group of passengers.

Cons: This flight was more than two hours late. The updates were not shared at the gate and we were strung along about the departure time. If a person didn't have the app, little to no info was available.

Cons: No WiFi functioning so nothing to do for five hours when you counted on having WiFi. Now I will always bring a book

Cons: Ground crew and in Jamaica was horrible. They asked me if I have flew United before when I asked her a question.

Pros: Everything was on time and as expected. The pilots were great and maneuvering around a storm outside of Denver.

Cons: Nothing to dislike, really.

Cons: I'm not that large of a person, but I had absolutely no room. Tried to read magazine , no room. I did not like the super small tray table.

Pros: Cheap. Ramen noodles. My personal carry on fit.

Cons: EVERYTHING ELSE SUCKED!!! I actually opted to drive home 1100 miles rather than fly back.

Pros: ABSOLUTELY NOTHING!!!

Cons: Everything. Glee spirit one other time and completely regret it. Haven't flown with them in 4 years. I remember why now. Flight was originally cheaper but by the time you pay all of there fees to get on the plane you're not saving at all. And once on the plane everything costs a fortune so now you've spent even more. They are never on time in my experiences and don't feel the need to give the paying customers updates. After several hours of delays you get the pleasure of being absolutely crammed in their crappy aircraft. NEVER AGAIN!

Cons: We had a good trip

Cons: The flight was delayed twice and ended up arriving hours after schedule. I get sometimes this happens. I was frustrated bc we were boarded and seated, ready to taxi with no pilot! It took another 30 minutes to get one! I realize when flights are late there are ripple effects but this was excessive.

Cons: My entertainment screen was not operating. Could not recline my seat.

Pros: Good, cheap flight that gets the job done. No issues boarding, seats were fine. Cannot comment on most things as I fell asleep almost immediately.

Cons: Would've been nice to have had an eye mask / blankets on a red eye flight...

Pros: Everything was well run and ontime

Pros: Absolutely nothing the flight never took off and I never mad it to my destination.

Cons: Everything this is the worst flying experience I've ever had in my entire life I will never fly frontier again

Pros: Frontier is so cheap. Flight got cancelled and they didn't bother to text or email with alert. Said they could reschedule 5 days later. I'll never fly then again.

Cons: Everything

Pros: Nothing

Cons: Everything. Terrible since they got bought out. Used to be a great local airline but not anymore.

Cons: Limited overhead space

Cons: delays were long, video sound is too loud for an evening flight. too many adds play on the screens and over the PA system

Pros: Seats were very comfortable in first class. Very happy with that experience for short haul flight. Enjoyed the service. Flight attendant checked on me multiple times and offered beverages.

Cons: Snack/food choices.

Pros: It was Dec 23rd the busiest travel day of the year. Check in was easy. Courteous help was available. Boarding was a bit slow, but it was a ful flight. We took off on time and landed early. The flight was smooth with helpful attendants.

Pros: My flight TO Denver was fine. Nice new plane, crew was pleasant etc.

Cons: My flight FROM Denver TO Houston was a nightmare. The plane was disgusting and smelled like dirty diapers. Everything was sticky and gross. I had to throw out the clothes I was wearing on the plane afterwards. I cannot believe the inconsistency. Never again will I fly Spirit.

Cons: The seats are cramped and on the way back, they canceled all flights back to Houston, causing us to pay an extra $600 in order to get home to work on Monday.

Pros: I did not know what to expect flying first time on Spirit but was pleasantly surprised at the efficiency and kindness of the employees.

Cons: I was not pleased to find that the weight for a bag was 40 lbs and was charged $25 on top of the $40 bag fee for an overweight bag. This must have been in the fine print for I did not see it and packed my bag to be less than 50 lbs. The seats have no leg room and I found them to be restrictive for my 5'2" frame. They do not recline due to the space "saving" efforts of the airline. If you are looking for "cheap" remember to add on all the fees charged for bags, select seats, beverages before comparing to other airlines.

Pros: Nothing

Cons: I wasnt allowed on my plane when it wasnt leaving for 43 minutes after i had arrived there. I would have been there the RECOMMENDED hour and a half early if i hadnt run into heavy traffic. Unfortunately, I only had 43 minutes before the plane left denver and the crew told me that i was late and wouldnt even give me the opportunity to try and get to the aircraft before it left. Then they told me that i could pay almost double what i had origionally spent on the flight to wait 4 hours for the next one with a 6 hour layover for thr connecting flight. I had then asked if it was possible to be reimbursed, the guy at the counter started laughing and said no it was my fault i was late. I have never been treated with such disrespect before in my life. I just dont understand, because no where does it say that if you're not there 50 minutes prior to the flight that you forfeit your flight. 50 minutes, i was there 43 minutes prior. Now i wont be able to visit my family for another year because i used my vacation time for that aweful experience with spirit ovwr 7 minutes. Then when i called kayak to explain to them what happened, they told me there was nothing they could do over and over again. Absolutely no help from either party.