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$29 Find Cheap Flights to Boulder

This is the cheapest one-way flight price found by a KAYAK user in the last 72 hours by searching for a flight to Boulder departing on 11/12. 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.
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Flight from Houston Hobby Airport to Denver

FAQs - booking Boulder flights

  • How long is the flight to Boulder?

    Flights from Phoenix1h 55m
    Flights from San Francisco2h 40m
    Flights from Dallas2h 10m
    Flights from Los Angeles2h 29m
    Flights from Minneapolis2h 04m
  • What is the cheapest flight to Denver?

    If traveling to Denver, the cheapest city to fly from in the last 3 days was Houston, with flights as low as $29 one-way and $56 round-trip. Flights from Minneapolis are the most searched and start at $52 for a return trip.

  • Which airlines fly to Denver?

    United Airlines, Southwest, and Frontier usually have the most frequent connections from United States to Denver. See the amount of flights per week for popular airlines flying to Denver.

  • How to fly to Boulder?

    You cannot fly directly to Boulder. KAYAK recommends you fly to Denver Intl (DEN) (33.41 miles from Boulder). From there you can rent a car or get a taxi.

  • What airports are near Boulder?

    The closest airport is Loveland Northern Colorado (FNL) (33.09 mi). Another nearby airport is Denver Intl (DEN) (33.41 mi). KAYAK recommends you fly to Denver Intl.

  • How far is Denver Intl Airport from central Denver?

    The city center of Denver is 18 miles from Denver Intl Airport.

  • What is the name of Denver’s airport?

    Denver is served by Denver Intl Airport, also commonly referred to as Denver or Denver Intl. The airport code is DEN.

  • How does KAYAK find such low prices on flights to Boulder?

    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 to Boulder.

  • How does KAYAK's flight Price Forecast tool help me choose the right time to buy my flight ticket to Boulder?

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to Boulder is likely to change within 7 days, so travelers know whether to wait or book now.

  • What is the Hacker Fare option on flights to Boulder?

    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 Boulder with an airline and back with another airline.

  • What is KAYAK's "flexible dates" feature and why should I care when looking for a flight to Boulder?

    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 Boulder up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

See more FAQs

Top tips for finding cheap flights to Boulder

  • There is no major airport in Boulder. It is instead served by Denver Intl Airport.
  • Enter your preferred departure airport and travel dates into the search form above to unlock the latest Boulder flight deals.

Top 5 airlines flying to Boulder

Need help choosing which airline to fly with from the United States to Boulder? 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
DeltaOverall score based on 9126 reviews
7.9Comfort
8.2Boarding
8.6Crew
8.0Entertainment
7.4Food
Airline reviews

In thirty years of traveling, mostly with Delta, this was the worst day ever.

2.0 MediocreScott, Sep 2024MSP - DFW
Read more Delta reviews

In thirty years of traveling, mostly with Delta, this was the worst day ever.

The flight was so late that I had to change connecting flights, turning a five-hour trip into a fourteen-hour nightmare.

I am so shocked at the service in first class. We were not greeted or offered a beverage for 45 minutes into the flight. She did however have time to write a long note. I just wanted a snack and something to drink. We were never offered coffee and the snacks came after dinner? It was the oddest flight I have ever been on. The gentleman next to me got up and gave our dinner box’s to the flight attendant and asked for a second glass of wine for each of us. Our dinner boxes sat on our tray for 20 minutes. She was rather distracted. He then asked another flight attendant for wine… finally we had a second glass. I was trying to give her some grace, she also told the man next me we couldn’t have any more wine because we drank it all… after landing the seasoned traveler next me ask for her employee number. Then it was a mutiny! She was refusing and it got tense. The captain came and asked what was happening, the flight attendants totally gave a biased account of the fact. The captain told the police the man I was seated next to was intoxicated! That was completely inaccurate and it really escalated things. I policeman found me at the luggage carousel to verify the facts. The flight attendants made false accusations that he touched them! That never happened. It was a very poorly trained crew. I am so anngry and shock by the entire experience! It was terrible service! I would like a refund for what I paid to be in first class and the most uncomfortable flight ever. I always fly Delta, it has been wonderful. I was so flustered by the entire experience! Please give me an update on this matter! Thank you, Kelle Myers

It was reported to the passengers that Delta failed to schedule the crew properly. This error caused the pilot to show up about 30 minutes late. All in all Delta's inability to take care of this basic function resulted in about an hour delay.

Late departure due to large number of wheel chair patrons. Used to having a box of snacks to select from in comfort plus. The flight attendant just rattled off what was available and asked us to pick. Felt rushed and uncomfortable. Seat was great. Prefer having the screen on the seat in front of me instead of having to pull it up from the seat side. Lots of room for my carryon under the seat in front of me.

The airplanes were so old and out-dated it was terrifying to fly on them.

It’s was good. There’s so much room for improvement though. Since the plane was small, there was no entertainment but for years now, the most jarring aspect of travel is the lack of tasty snacks.

The important things including boarding and the flight being on time and safe were excellent. The disappointment comes from the comfort and amenities. Was misled by the "availability" of inflight internet- there is an extra cost. The tray table was broken, the bathroom door stuck and flight attendants were competent but not very friendly.

The Pilot was one of the best I've had, very informative about turbulence and got us to our destination early

The Gate Attendant @ Gate B36 was rude The flight was good but the entertainment system was not functioning as expected. The snacks were ok but could be better The flight crew was excellent.

Little snafu at boarding. Staff communicated with gate poorly. Flight attendant was rude making disembark early. This was an older mint class. Needs an overhaul for sure. Food was good. The male flight attendant was really nice.

My encounter with the entertainment services provided on board was moderate; the functionality of the Wi-Fi connection was either sluggish or nonoperational, while the display screens were antiquated and suffered from poor visibility. On the positive side, the cabin exuded a sense of expansiveness, and the crew exhibited amiable and accommodating behavior throughout the journey.

Everything was great except for some reason crew and ground crew could not figure out how to deal with an electric wheelchair and it delayed us 20-30mins. Was pretty frustrating for passengers and the captain.

Like the space, did not like the snack options, there was no power outlet in seats, no entertainment, no flyfi.

Traveling with JetBlue from NYC was convenient as accessing JFK airport was straightforward via the LIRR to the AirTrain. Maneuvering through the terminal was hassle-free, which was a pleasant start to the journey. However, the flight experience itself left much to be desired. The seating arrangement was notably uncomfortable; despite securing a window seat, space felt cramped. This was exacerbated by the middle seat passenger encroaching on my area, which made the flight less enjoyable. Additionally, while the in-flight entertainment system initially seemed like a reprieve, the sound outlet on my seat was inoperable. This issue turned what could have been a manageable three-hour flight into a rather tedious ordeal, as I was unable to use the entertainment system effectively. While JetBlue provided a smooth process in terms of airport logistics, the on-board experience highlighted areas in need of improvement, particularly in terms of comfort and entertainment system maintenance.

The flight crew that we had in our section may have been tired or something. I asked the flight attendant about my son’s screen not working and she spoke down to me like I was stupid. He still had no working screen throughout his flight. The other members had no personality and seemed like they were annoyed when you asked them for something. Definitely took a hit for simple things on my JB experience.

I volunteered to let them put my carry on suitcase in the baggage storage area. But when we landed I was told it was being unloaded IN A DIFFERENT TERMINAL! I had to walk (painful for me) a long way to retrieve my bag and my ride had to move from the waiting area they were in to a totally different one. Not happy.

Over 2 hour delay for a 50-minute flight is unacceptable, especially in normal weather. Very poor communication via app

In-flight staff was very helpful and excellent. However, the flight was delayed by 90 minutes. Also the boarding process should be expedited in case of delayed flights. This will help the passengers trying to make international connections.

They delayed our flight by 45 minutes and then re-updated the departure time back to normal schedule with no notification, email, or app update causing probably 40 people to miss the flight as they left without us.

The passenger in the row in front of me was listening to a political speech on his phone at full volume with no headphones and it was disturbing all of the passengers around him for several rows. I asked 2 of the flight attendants to speak to this passenger but they only shrugged. It was obvious that they were afraid there might be conflict and would not say anything. I had to take it upon myself to tell the passenger that he needed to turn it off or wear headphones as it was disturbing everyone around him not wearing their own headphones. I was very disappointed in the United flight attendants.

Flight was ok. Unfortunately it was a Boeing 737, which is a cramped / tight airplane. I prefer the Airbus as they are a more comfortable flight experience.

We had selected seats in the app that were a 2x2 format in the middle of the plane. Our seats when we got on the plane had been moved to the back rows in a 3x1 format. What’s the point of paying up for tickets that allow seat selection if the airline will just change them?

We were traveling as a family of 5 and they refused to seat us together. There were entire rows open, and my 13 year old daughter had to sit alone. Ridiculous!

I missed my flight and they would let me on the plane

flights were on time, boarding was easy. maybe better snack selection, like mini kind bars?.

There were issues with the first segment but what really bothered me overall is that you rebooked me and put me in a seat away from my wife and then put her in another booking or boarding group. I don't like having to monitor every little thing you guys do in order to get what I paid for in the first place.

Delays!!! Serious delays. I was told by a member of staff in LGA that I would miss my DEN to LAX flight connection, so I was put on a later flight. Due to delays I would have been able to have made my original flight, where I was sat in business class - seat 1A: I was put on my original flight but bumped from business - 1A to economy 33C. I want a refund for paying business class but only flying economy

Miserable. Active military on orders turned away from Lounge because not in uniform. This is completely contrary to United’s online lounge access policy. Sad that employees aren’t trained better. This is not the United Airlines my parents used to regularly fly with.

Too many canceled flights and kept my wife and I separated on alternate flights. We did not fly out of Denver. We paid a lot of money for the seats we wanted and now that money is gone and we did not sit together. That being said, the many agents were very friendly and did everything possible to help us.

The flight was delayed till next day ! They kept delaying every 30 minutes then after 3 hours they delayed it till next day. We kept waiting in line standing more than an hour to get the hotel and meal vouchers. There was no communication at all. Everything was bad

Flight was on time, no drinks served on the two short flights. Comfortable seats.

This flight was fine but had no time to breathe as the connection was late from Sea to ORD.. Super stressful. If we checked bags, the trip would have been very distressed.

The one gate agent was very abrupt and rude. Not a good look for American for the day

It was late, then the bathroom was inoperable plus it was very hot as well. Plane was very old

Other than Charlotte airport being crowded and a mush of people at the gate and even through the priority lane, the flight was great.

This time there was nothing to be better, really! Boarding on time, taking off on time and arriving earlier. The only complain is about way too long line at pre-check security point at DFW. But this is the airport’s problem, not American Airline.

3 hours late. Second consecutive time this month that a flight from DFW was delayed 3+ hours.

Seats were very uncomfortable. I paid extra for a seat with more leg room, the seat was no different than a seat at the back of the plane. Flight attendant was rude.

Departure more than an hour later. Conexion/waiting time at the airport was more than 7 hours :(

The plane was very clean, the flight attendants were chipper and accommodating. It was roomy

I didn’t have enough time to catch my connecting flight and had to use a different Airline. I will be requesting a refund.

Long lines, rude staff, everything that's offered you have to pay for.

Among the worst flights I’ve taken. Never again. Staff was horrible across the entire Frontier workforce. Flight attendants were legitimately yelling at and arguing with each other while on board - toxic environment (really guys? at work and in front of customers no less?). Frontier intentionally assigned my partner and I (who booked together) to opposite ends of the plane despite plenty of seats together - straight up predatory practices to take people’s money. Seats are legit the absolute worst. Not even free coffee. Absolute garbage airline with wild hidden fees and the worst staff in the business. They will for sure have a deadly accident soon. Never again, not for any where not for any price.

25 dollars to get a boarding pass abusive nasty folks at the boarding pass check-in desk flight delayed abusive nasty personnel at gate no one knew what they were doing at boarding a real cluster fbk I took a different flight back frontier socks

I was unable to check-in on your app at home before the trip. I didn't realize that you charged to get a boarding pass from the couter. I stood in a long line to check-in to be told that I needed to get in another line to get a boarding pass and that it would cost me. When I spoke with the lady at the next counter, she couldn't get me into the check-in on my app so she tried several other ways over about 15 minutes while others were waiting in line. Finally she was able to get into the check-in and then it took a while to click through multiple upsale options to get my pass. I thought it should be easy since I has a personal pack and no seat selection. I was traveling alone to attend a family funeral.

$80 fee for a backpack as a personal item is robbery.

The flight crew and flight attendants are poorly trained and demonstrate poor professionalism. They have a sloppy appearance and communicate with patrons poorly. It is embarrassing for them to be representatives of an airline and for them to be called professionals.

The flight attendence were extremely rude and I am disabled

Never offer anything to drink ☹️ Flight delayed gate moved poor communication

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Recent round-trip flight deals

10/5Sat
nonstopFrontier
2h 19mDFW-DEN
10/8Tue
nonstopFrontier
2h 06mDEN-DFW
$56
10/23Wed
nonstopFrontier
3h 26mATL-DEN
10/26Sat
nonstopFrontier
2h 57mDEN-ATL
$56
10/26Sat
1 stopAmerican Airlines
5h 33mHOU-DEN
10/27Sun
1 stopAmerican Airlines
5h 55mDEN-HOU
$95
9/23Mon
nonstopJetBlue
4h 38mJFK-DEN
9/30Mon
nonstopJetBlue
3h 41mDEN-JFK
$130
10/18Fri
nonstopUnited Airlines
2h 24mLAX-DEN
10/20Sun
nonstopUnited Airlines
2h 30mDEN-LAX
$139
11/2Sat
nonstopAmerican Airlines
2h 17mDFW-DEN
11/5Tue
nonstopAmerican Airlines
2h 01mDEN-DFW
$147
10/23Wed
nonstopDelta
3h 13mATL-DEN
10/25Fri
nonstopDelta
2h 51mDEN-ATL
$167
9/30Mon
nonstopDelta
2h 21mLAX-DEN
10/4Fri
nonstopDelta
2h 35mDEN-LAX
$170
10/26Sat
nonstopJetBlue
4h 40mBOS-DEN
11/2Sat
nonstopJetBlue
3h 49mDEN-BOS
$177
10/2Wed
1 stopUnited Airlines
6h 33mSEA-DEN
10/5Sat
1 stopUnited Airlines
7h 54mDEN-SEA
$182

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11/12Tue
nonstopFrontier
2h 37mHOU-DEN
$29
9/25Wed
nonstopFrontier
2h 14mDFW-DEN
$29
11/12Tue
nonstopUnited Airlines
2h 49mORD-DEN
$70
10/12Sat
nonstopAmerican Airlines
2h 15mDFW-DEN
$74
10/23Wed
nonstopDelta
3h 13mATL-DEN
$84
11/28Thu
nonstopUnited Airlines
2h 25mLAX-DEN
$86
10/13Sun
nonstopDelta
4h 25mLGA-DEN
$86
11/11Mon
nonstopJetBlue
4h 48mBOS-DEN
$89
11/21Thu
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8h 14mLGA-DEN
$95
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9/17Tue
nonstopFrontier
2h 28mLAX-DEN
9/25Wed
nonstopFrontier
2h 29mDEN-LAX
$91
9/17Tue
nonstopFrontier
2h 28mLAX-DEN
9/24Tue
nonstopFrontier
2h 29mDEN-LAX
$93
9/17Tue
nonstopUnited Airlines
4h 38mBOS-DEN
9/23Mon
nonstopUnited Airlines
3h 58mDEN-BOS
$269
9/17Tue
nonstopJetBlue
4h 36mBOS-DEN
9/23Mon
multi-stopJetBlue
6h 24mDEN-BOS
$278
9/14Sat
nonstopJetBlue
4h 35mBOS-DEN
9/21Sat
nonstopJetBlue
3h 56mDEN-BOS
$279
9/14Sat
nonstopDelta
4h 28mBOS-DEN
9/21Sat
nonstopDelta
4h 02mDEN-BOS
$296
9/15Sun
multi-stopDelta
6h 53mSEA-DEN
9/23Mon
nonstopDelta
3h 00mDEN-SEA
$314
9/15Sun
nonstopUnited Airlines
4h 33mBOS-DEN
9/24Tue
nonstopUnited Airlines
3h 58mDEN-BOS
$332
9/16Mon
multi-stopAmerican Airlines
6h 42mJFK-DEN
9/24Tue
multi-stopAmerican Airlines
5h 54mDEN-JFK
$341
9/17Tue
multi-stopAmerican Airlines
7h 27mEWR-DEN
9/25Wed
multi-stopAmerican Airlines
7h 18mDEN-EWR
$341

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Everything you need to know for your flight to Boulder