Find Cheap Flights from Indianapolis to Denver

Pros: 30 mins early? Woohoo!!

Pros: Older planes in the fleet that get the job done and keep the ticket costs done low. I've got no problems with that. Sure the seats don't recline, but you're not really gaining anything with that 1° recline anyways...it just means that the flight attendants don't have to warn you about putting your seat back in the upright position (as if it weren't still upright fully reclined) before landing.

Cons: Again, I get that Frontier is a "budget" airline and they keep the ticket costs down by removing all the additional, complimentary perks, but the flight attendants were borderline rude and they acted as if someone had chastised them for being too friendly with the customers or something of that nature.

Pros: The crew was fine and the flight was smooth.

Cons: I was unaware that it would be $40 to carry on a bag and if you want to select a seat they try to charge you for upgrades there too. It's totally ridiculous. I should have just flown with a real airline.

Cons: We were stuck on the runway for 2 hours unable to get off the plane. A horrible experience.

Pros: Free personal device entertainment!

Cons: Three hour delay

Cons: The 6 hour delay

Cons: The flight was supposed to leave at 9:15pm and didn’t leave until 12:00 am.

Pros: Crew was super helpful and patient as the flight was delayed by more than 3 hours. Captain kept everyone up to date with whatever was going on.

Cons: Flight delay impacted a lot of other travel plans. No compensation for long delays

Pros: Crew was accommodating

Cons: They has us deplane twice. Flight was delayed 2 hours. Need to upgrade plane equipment

Pros: United was great.

Cons: DCA is a total disaster. Avoid the airport at all costs. The metro is shut down and everyone is competing for very expensive cabs and ride share. Terrible. Worth it to go to Dulles.

Pros: New plane with United. There was actually space to put my personal under the seat. Good free in-flight entertainment options.

Cons: Getting the crew to fly on original date of 12/31 instead of having to scramble to find hotel on other side of BI in Hilo on New Years eve. 24 hour delay and then giving the last row of seats with a screaming baby that another group kept walking back to our section to "grace" us with such melodies!

Cons: Delayed

Cons: Stewardess very rude

Pros: Was not long enough

Pros: The cheap tickets

Cons: Expensive baggage, no free snack/drink

Pros: The crew was fine and the flight was smooth.

Cons: I was unaware that it would be $40 to carry on a bag and if you want to select a seat they try to charge you for upgrades there too. It's totally ridiculous. I should have just flown with a real airline.

Cons: I was sitting next to this giant guy who took up half my seat. Not cool. It would have been nice if the flight attendants noticed and moved me.

Pros: Nothing

Cons: We were delayed wit no apparent reason. Additional fees are ridiculous.

Cons: All Excellent

Pros: I like the fact that I finally got home.

Cons: Not be delayed 5 hours.

Pros: Crew was very nice, and helpful.

Cons: I remember you used to get to choose from some seats even if you didn't pay extra. Since the smaller airlines started charging to choose, now the big ones are doing it as well. I checked in for two tickets at the same time, but my wife and i were still separated. Frustrating

Pros: The crew were nice and accommodating.

Cons: The seat was not comfortable, my back was hurting from a very short 2hr flight.

Cons: On time instead of 5 hours late

Pros: I forgot my charger at the gate and the purser was so kind to help bring it back #unitedairlinecares

Cons: Nothing was a perfect flight

Cons: Cabin felt quite warm

Pros: The crew was good, the landing was fantastic, enjoyed the entertainment options.

Cons: The space of the seats are tough, we were cramped and in tight quarters.

Pros: Flights were on time.

Cons: Frontier added cost for EVERYTHING. Pay to choose seat, pay for carry-on, poor information concerning what constitutes a carry-on, pay for a drink of bag of nuts. I'm surprised they didn't charge me extra to use the reading light.

Pros: The price!!!

Cons: Delayed both ways by 1 to 1 1/2 hrs!!! Not weather related!!!

Pros: Older planes in the fleet that get the job done and keep the ticket costs done low. I've got no problems with that. Sure the seats don't recline, but you're not really gaining anything with that 1° recline anyways...it just means that the flight attendants don't have to warn you about putting your seat back in the upright position (as if it weren't still upright fully reclined) before landing.

Cons: Again, I get that Frontier is a "budget" airline and they keep the ticket costs down by removing all the additional, complimentary perks, but the flight attendants were borderline rude and they acted as if someone had chastised them for being too friendly with the customers or something of that nature.

Cons: Carry-on bag fees.

Pros: Flight was smooth

Cons: More leg room

Cons: The Delta flight leaving Cleveland was a hour and a half late so we could not make our connection to get home and had to overnight in Minneapolis. This is the fourth time in six flights For Delta. I think the Kayak booking algorithm needs to allow more time between connecting flights.

Pros: Free movies

Cons: Bad food, cramped seating, slow food service

Cons: Connection at Schiphol often tricky;

Cons: Free WiFi kn the plane was hardly working even over US mainland, before it list connection with outside internet over ocean. But it is something I do not care much about.

Pros: United was great.

Cons: DCA is a total disaster. Avoid the airport at all costs. The metro is shut down and everyone is competing for very expensive cabs and ride share. Terrible. Worth it to go to Dulles.

Cons: Delay killed my travel plans and resulted in a nine hour layover in Munich Germany!

Pros: Crew was amazing. I was traveling with my 11 month old and they were super helpful and very friendly.

Cons: I was bummed that this plane didn’t have TVs at each seat. You were able to stream all kinds of free movies and shows on the United app but I was holding a baby on my lap and couldn’t use my phone as well.

Pros: Cheap

Cons: after typing in my contact information correct, it made it to frontier incorrect. I was UNABLE to resolve online, as when trying to fix my name that the Kayak API messed up (appended first+middle name) it wanted me to pay $1,000+ dollars because it acted like I was transferring my tickets. It took FOREVER to get to a person to fix this over the phone. This is the day and age everyone wants to send you through every possible automated prompt before getting a real person. The flight itself was fine, getting to be able to get on it was a giant pain.

Cons: Frontier cancelled my Friday flight and rescheduled til Saturday morning. Had to cancel my whole trip because at that point flights were too expensive. Had to reschedule trip. Not happy at all!!!

Cons: I've been on four Frontier fligts in the past week and a half. Every single one has been delayed over an hour because they weren't properly staffed. Just pay more to fly a different airline.

Cons: Seat

Cons: The flight was canceled; why allow booking for a flight you plan to cancel. Ruined my plans and reason for flying.

Cons: Flight delays twice coming out of Augusta. Barely made connection otherwise flight was ok

Cons: The crew could have been more polite.

Cons: If we had access to the WiFi to watch shows earlier like United does, that would be nice.

Cons: It was late

Cons: The Delta flight leaving Cleveland was a hour and a half late so we could not make our connection to get home and had to overnight in Minneapolis. This is the fourth time in six flights For Delta. I think the Kayak booking algorithm needs to allow more time between connecting flights.

Pros: Free movies

Cons: Bad food, cramped seating, slow food service

Pros: Choice of Entertainment was excellent

Cons: Bigger snacks - 2 small cookies or small pack of almonds was indigenous 2 hr flight

Cons: On time instead of 5 hours late

Cons: Again, left stranded in SC.

Pros: New plane with United. There was actually space to put my personal under the seat. Good free in-flight entertainment options.

Pros: Crew was accommodating

Cons: They has us deplane twice. Flight was delayed 2 hours. Need to upgrade plane equipment

Cons: In checking in the staff was no helpful

Pros: Flight was fine. No problems. Crew pleasant and professional.

Cons: Flight delayed due to problems with aircraft availability.

Cons: Crew could be nicer.

Pros: It was so nice to fly direct again!