$84 Find Cheap Flights from New York 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 from New York to Boulder departing on 2/19. 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, 0 bags

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Everything you should know

Cheapest round-trip
$168
Overall average: $277
American Airlines
Fri 2/20Tue 2/24
JFK - DEN • 1 stop
Cheapest non-stop
$169
Typical prices: $291-$472
Southwest
Fri 3/6Tue 3/10
LGA - DEN • Non-stop
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Flight Deals
Useful Info
Flight Deals

Cheap Flights from New York to Boulder (NYC-DEN)

 
Here are some of the best deals found on KAYAK recently from the most popular airlines for round-trip flights from New York to Boulder 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 New York to Boulder

Fri, Feb 20 - Tue, Feb 24
American Airlines Logo
2:30 pm - 8:14 pm
JFK
-
DEN
7h 44m
1 stop
American Airlines Logo
8:00 am - 6:27 pm
DEN
-
JFK
8h 27m
2 stops
$168American Airlines
Mon, Feb 23 - Thu, Feb 26
Frontier Logo
10:00 pm - 8:20 am
LGA
-
DEN
12h 20m
1 stop
Frontier Logo
11:05 am - 7:49 pm
DEN
-
LGA
6h 44m
1 stop
$168Frontier
Sat, Feb 21 - Wed, Feb 25
United Airlines Logo
6:10 am - 10:33 am
LGA
-
DEN
6h 23m
1 stop
United Airlines Logo
11:41 am - 5:24 pm
DEN
-
LGA
3h 43mnonstop
$169United Airlines
Thu, Feb 19 - Mon, Feb 23
Multiple Airlines Logo
1:00 pm - 9:41 pm
JFK
-
DEN
10h 41m
1 stop
Multiple Airlines Logo
10:41 am - 4:26 pm
DEN
-
JFK
3h 45mnonstop
$169Multiple Airlines
Thu, Feb 26 - Mon, Mar 2
Frontier Logo
1:00 pm - 9:39 pm
JFK
-
DEN
10h 39m
2 stops
Frontier Logo
12:59 am - 11:58 am
DEN
-
JFK
8h 59m
1 stop
$170Frontier
Thu, Feb 26 - Sun, Mar 1
Multiple Airlines Logo
8:59 pm - 8:19 am
LGA
-
DEN
13h 20m
1 stop
Multiple Airlines Logo
6:00 am - 2:00 pm
DEN
-
LGA
30h 00m
1 stop
$170Multiple Airlines
Sat, Feb 28 - Wed, Mar 4
Delta Logo
7:59 am - 10:53 am
JFK
-
DEN
4h 54mnonstop
Delta Logo
6:00 am - 11:49 am
DEN
-
JFK
3h 49mnonstop
$173Delta
Wed, Apr 1 - Sun, Apr 12
JetBlue Logo
8:12 pm - 10:59 pm
JFK
-
DEN
4h 47mnonstop
JetBlue Logo
11:59 pm - 5:44 am
DEN
-
JFK
3h 45mnonstop
$176JetBlue
Tue, Mar 31 - Fri, Apr 3
JetBlue Logo
8:12 pm - 10:59 pm
JFK
-
DEN
4h 47mnonstop
JetBlue Logo
11:59 pm - 5:44 am
DEN
-
JFK
3h 45mnonstop
$177JetBlue
Wed, Feb 25 - Mon, Mar 2
Southwest Logo
7:15 am - 10:00 am
LGA
-
DEN
4h 45mnonstop
Southwest Logo
6:35 am - 12:20 pm
DEN
-
LGA
3h 45mnonstop
$177Southwest
Useful Info

Good to know

Low seasonNovember
Cheapest flight$84
Best time to beat the crowds with an average 13% drop in price.
Most popular time to fly and prices are also 4% lower on average.
Flight from New York LaGuardia Airport to Denver

When to book flights from New York to Boulder

Are your dates flexible? Find out the best times to travel from New York to Boulder based on our flight data from the last year. Discover the cheapest month and even day to fly.
Estimated round-trip price

Flights from New York to Boulder: the best tips from KAYAK users' own experiences

Insights shared by verified travelers who flew the route from New York to Boulder 
DavidFlew with JetBlue
JFK
-
DEN
Jan 2025
JetBlue leaves from JFK which can be a plus or minus depending on your plans in New York. Arrive early and check out the TWA hotel—with a great public lounge, bar, and food court in the restored 1960’s Eero Saarinen-designed building outside of terminal 5. The AirTran accepts OMNY tap to pay with your phone or credit card, take it to Jamaica station to transfer to the LIRR to go to Penn Station in Manhattan or check the MTA TrainTime app for schedules and tickets for other destinations.
JeffreyFlew with Delta
JFK
-
DEN
Jan 2024
Leave a lot of time to get to your gate.

FAQs for booking flights from New York to Boulder

  • Which airports will I be using when flying from New York to Boulder?

    When flying out of New York you’ll be using one of these airports: Newark, New York John F Kennedy Intl or New York LaGuardia. Boulder does not have its own airport so you’ll be flying into nearby Denver Intl airport, which is 33.4 mi away.

  • How long does a flight from New York to Boulder take?

    Direct flights cover the 1,609 miles separating New York and Boulder in about 4h 22m.

  • How many flights are there between New York and Boulder?

    64 direct flights run between New York and Boulder on a daily basis. On average, there are about 448 departures each week.

  • What’s the cheapest day of the week to fly between New York and Boulder?

    Consider leaving on a Friday and avoid Saturdays if you are looking for the best rates. For your return to New York, you’ll find the best rates on Tuesdays and the most expensive ones on Saturdays.

  • How does KAYAK find such low prices on flights from New York 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 from New York to Boulder.

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

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to Boulder from New York 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 New York 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 to New York with another airline.

  • What is KAYAK's "flexible dates" feature and why should I care when looking for a flight from New York 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 from New York up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

  • Which airlines provide the cheapest flights from New York to Boulder?

    In the last 72 hours, the cheapest one-way ticket between New York and Boulder found on KAYAK was with Frontier for $39. Frontier offered a round-trip connection from $55 and JetBlue from $109.

Top tips for finding cheap flights from New York to Boulder

  • There is no airport in Boulder. Instead, you’ll be flying into Denver Airport when flying between New York and Boulder.
  • The cheapest flight from New York to Boulder was found 63 days before departure, on average.
  • Book at least 1 week before departure in order to get a below-average price.
  • High season is considered to be November, December and January. The cheapest month to fly is January.

Reviews of the top 5 airlines serving New York to Boulder

 
Need help choosing which airline to fly with from New York 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
SouthwestOverall score based on 4267 reviews
7.0Food
8.0Comfort
8.6Crew
8.1Boarding
7.5Entertainment
Airline reviews

All good except once again bags took an hour at Midway Airport Happens all the time. Ridiculous

10.0 ExcellentAnonymous, Jan 2026
PHX - MDW
Read more Southwest reviews

All good except once again bags took an hour at Midway Airport Happens all the time. Ridiculous

Everything went smoothly and we even arrived a little bit early.

Great vacation. Can't wait till next year for another one.

Great flight but super high price. Glad it was a business trip and not personal

On time. Friendly staff. Took to long to pre bord all the specialty groups. Cramped small plane

The seats were comfortable, and the boarding process was pretty smooth.

3 hour delay. Had to change plans and was still delayed.

The staff was very friendly, professional, and courteous. The overall flight was a great experience.

The crew canceled the complementary snack and drink in anticipation of turbulence that never materialized. I was counting on the drink (water) to take the the doses of medication - prescribed for my heart condition - that were due during the flight. Since no snack or meal was served on this flight, I cannot rate the food quality. Otherwise, this flight was excellent.

Departure was delayed more than 1/2 hour while we waited for luggage (only) transfer from another flight/plane. Once approved for takeoff, the flight was excellent.

It was last minute due to weather - considering - it was amazing! Good smiles, friendly staff and they were making sure we knew what was going on when and where.

The entertainment screens were not working and there was no air condition the entire flight. Very uncomfortable.

It was Delta, but the flight attendants were stressful and disrespectful. I am a diamond member a travel weekly. I have not had a negative thing to share in quite some time. But this was noticeable.

The plant way delayed departing by 3 hours. It was an old airplane with broken seats and armrests. The bathroom made a hollering sound. A really crappy flight experience and travel day all around.

Original flight was cancelled and when i was rebooked by the airline, they couldn't seat me in the same type of seat as I had originally booked (went from window/aisle to middle/middle and one was a bulkhead seat, and other wasn't in the same class)

My flight was cancelled with no explanation after I had already cleared security. I was given 4 options to rebook, only one being non-stop like I had paid for. I grabbed it. It was 4 plus hours later and then took off even later. Biggest complaint is that I booked early and had an aisle seat. They gave me a "window" seat in front of the exit row, so the seat did not decline. I weigh all of 103 #s and it was tight for me! For what I paid, I feel I was kind of ripped off. I think they should have given me the empty comfort seat for the inconvenience. There was no apology nor any explanation as to why the flight was cancelled. My guess is it benefitted Delta in some way.

Very smooth, on-time, and pleasantly uneventful flight. The team at the gate and on board were professional and genuinely courteous. The pilot kept us well updated throughout, and both takeoff and landing were steady and enjoyable without any drama. Just a good, solid flight. Thank you! 💗

I truly love flying with Delta. They have always treated me with the upmost respect

The flight was great. The gate location was way to far away!!!

This route with Delta always has delays or is cancelled. Aircrafts seem smaller and older. I fly Delta quite a bit - haven’t had issues with the international flights. But this route has always been the troublesome one

Perfect flight. Smooth flight. Arrived 20 minutes early at destination. Excellent service.

Flight was delayed 8 times. We were sitting at the airport for 14 hours. We got 2 hours of sleep (if that) on what was not meant to be a red-eye.

Plane boarded early a quickly, was mostly full. We left close to on time. And landed early.

Flight was timely, relatively comfortable, with decent entertainment and food served. Only problem encountered was with the free messaging which I highly appreciate, but it did not work from iphone to non-iphones.

This flight was perfect. No complaints and only the highest regard for the crew and ground staff and how they executed perfectly. I fly a lot with United and would request predictability and transparency in their operations instead of last minute changes.

Survey sent before we actually left. Delay after delay. Now a crew problem.

I love flying with United. Unfortunately, I flew on an older plane with minimal upgraded technology (no Bluetooth functionality or handy charging ports). Otherwise, the flight was great and even arrived early.

They changed my seats after I checked in and I was stressed from the time I saw that information until just before boarding, when the gate attendant fixed it, but it shouldn't have happened. And if it couldn't be prevented, then the people on the phone I spoke with should have done something to help, which they did not, nor did they offer me compensation, just meaningless apologies.

Smooth flight, especially take off and landing, and great crew on board. Really loved the stroopwaffles!

Deplaning was delayed because of Jetbridge equipment issues in MKE, causing an issue on an otherwise great flight.

Terrible. They canceled our early morning flight after midnight on the day of and had no available flights to rebook my family on for the next 72 hours. Yet they still had other flights that were not cancelled from JFK so it couldn’t be based on the weather. It felt like they canceled the flight based on it not being profitable enough for them. I am not interested in traveling with the again. The absolute worse customer service and lack of accountability.

First time flying with JetBlue and never again. I went to the counter to request meet and assist because I'm 74 and my wife is 79. I walk with a cane and my wife is handicapped and has her own wheel chair. I told the agent that my wife and luggage was at the entrance door. The ticketing agent said to me that they don't offer meet and assist. I need to bring them our luggage and then go back and get my wife in order to get my boarding pass. As I went back to get my luggage a Southwest agent along with a TSA agent recognized the situation and came over and took my wife and luggage to the JetBlue ticketing counter alongside the line and told the JetBlue agent to issue to take our luggage as soon as they could.

Flight was fine, price was good but food onboard was abysmal. I was on there for breakfast and lunch and dinner 845am EST to 845pm GMT and all I got was a yoghurt parfait, fruit and a piece of cake. Later snacks included an ice-cream brownie and a pizza twist. I was hungry by the time I landed and the airport amenities were closed. Not happy.

Not a pleasant experience, service was poor. Didn't like it

Everything was great. I liked the text updates so that I never miss a gate change & I have all the latest info.

No internet on a flight over three hours in this age is criminal. Staff inattentive and dismissive

Worst flight experience ever flights canceled. JetBlue told us just did not even bother standing in line to come back in one and a half hours then without any information we had to go pick up all of our luggage and spend over $2000 in accommodation just to get home. JetBlue said that the next flight available for us to get home would be three days later. Absolutely absurd hasn’t offered to give us any compensation do not fly JetBlue horrible company. They said it was based on the weather and the weather is great in all locations that we would’ve been flying to total hoax. I think it’s a conspiracy theory.

flight was delayed for hours with no explanation. The plane was a very old aircraft.

The flight departed more than 1 hour late. Leg room is bigger than most airlines

Excellent. Although they used to greet me as a mosaic member and provide a free drink, early boarding helps me to keep coming back to JetBlue.

It was costly and difficult to check in. $85 to take a small suitcase with me, carry on or checked and $75 on the return trip, Plus $25 if I didn't check my self in check in $25, because I couldn't do it on the kiosk. Small very uncomfortable seats, waited on the runway for near an hour each way. It was my worst flight to date.

Due to weather, my flight was delayed, further delayed, then canceled. I eventually got through to a support person who helped me find a different route out of MSP, but to get to DIA, they didn't want to, but eventually did help with the connection ticket purchase. But even this replacement flight was delayed time and time again, and I would have missed my connecting flights and I didn't want to get stuck in a layover city, so after 12 hours at the airport with two young boys who were very tired, we just cancelled our plans and spent the week at home, instead of Nana's.

I knew going into this that Frontier, being a low cost carrier, would be pretty bare bones and charge for most extras but this was made up for by the fact that the airplane was a reasonably new Airbus, every employee was great and best of all, Everett Washington is an amazing airport - thanks Frontier for flying there!!!

Seats were new and comfortable. Staff was fine. Missed my connection due to weather -which wasn’t their fault- but got no help at all. Gate staff sent me to customer service, which was and stayed unstaffed. Sign with QR code directed me to call or chat. Chat was useless. Call was returned after an hour. No itinerary offered by Frontier could get me home in less than 30 hours. Rebooked with another airline and got a partial refund that came to about 10 percent of what I paid to get home.

The experience was good. No frills but I got there safe and sound and on time.

As every law enforcement agency I could imagine surrounded the plane and we didn’t disembark for 2 hours and then had to stick around for another hour to go get our personal belongings after leaving them behind and being bused away from the plane, it was scary and inconvenient. We were given no information as to why this was happening. Lack of communication with passengers was disappointing.

The worst. They don’t follow procedure for boarding per group. Flight got delayed for no understandably reasons, they changed our destination from PR to Miami, left us inside a plane for more than 8 hours, then cancelled flight in Miami leaving us stranded. Poorly managed re-accommodation for a new flight and overnight stay so I have to spend in a new ticket and my own hotel room to been able to get to my office next day. Lost 2 days of work and as a doctor, patients loosing their appointments. to other flights and besides

I was 2 hr arrive in the airport and 45 min in the line . After take to my turn . The agent tell me I’m later . I can not board . So my vacation was going to the floor . Just for their bad customer service agent in the airline

Frontier Airlines was AWFUL. I was an hour early for my flight and the lady refused to check me in. I had to purchase a whole new ticket with a different airline.

Late, terrible communication, horrible planning of passenger seating until the literal last minute. One of the worst flying experiences of my life. Y'all suck

Everything you need to know for your flight from New York to Boulder

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