$87+ Cheap flights from New York, NY (NYC) to Boulder, CO
This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 12/15. Fares are subject to change and may not be available on all flights or dates of travel.
NYC — DEN
Jan 1 — Jan 81
1 adult, Economy
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Find cheap flights from New York to Boulder with Cheapflights
1. Tell us where you want to go
Enter your travel information like dates, passengers, trip type (one-way or round trip), and preferred cabin class then click “Find deals”2. Select your favorite providers
We find the providers serving your travel needs. Choose up to four travel providers to compare side-by-side for flights, hotels, or car rentals.3. Compare prices and book
Review each provider’s pricing and select the best option for you! Book through your favorite provider’s website for a seamless experience.Cheapflights Tip: The best prices from New York to Boulder are usually found in January or October, booked 75 days in advance, depart on a Wednesday or Tuesday and return on a Thursday
Cheap flight deals from New York to Boulder
Cheapest flights from New York to BoulderExplore the most affordable flight options available from New York to Boulder. Find the lowest fares from popular airlines and budget airlines, with prices last updated on December 2, 2025.
Explore the most affordable flight options available from New York to Boulder. Find the lowest fares from popular airlines and budget airlines, with prices last updated on December 2, 2025.
This Frontier deal was found by Cheapflights users on 12/2. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 12/1510:55 pmLGA - DEN
Nonstop4h 28mFrontier
Wed 12/174:25 pmDEN - LGA
Nonstop3h 35mFrontier
Deal found 12/2![Frontier logo]()
$133
This Kiwi.com deal was found by Cheapflights users on 12/1. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 12/810:55 pmLGA - DEN
Nonstop4h 28mMultiple Airlines
Wed 1/2111:27 amDEN - LGA
2 stops10h 22mMultiple Airlines
Deal found 12/1![Multiple Airlines logo]()
$134
This Kiwi.com deal was found by Cheapflights users on 11/30. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/164:05 pmJFK - DEN
2 stops42h 37mFrontier
Wed 12/249:33 amDEN - JFK
Nonstop3h 47mFrontier
Deal found 11/30![Frontier logo]()
$135
This Kiwi.com deal was found by Cheapflights users on 11/30. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 12/1210:55 pmLGA - DEN
Nonstop4h 28mFrontier
Mon 12/159:05 pmDEN - LGA
2 stops17h 24mFrontier
Deal found 11/30![Frontier logo]()
$136
This Super.com deal was found by Cheapflights users on 12/1. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Super.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/3110:55 pmLGA - DEN
Nonstop4h 28mFrontier
Wed 1/74:25 pmDEN - LGA
Nonstop3h 35mFrontier
Deal found 12/1![Frontier logo]()
$137
This Kiwi.com deal was found by Cheapflights users on 12/2. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 12/1210:55 pmLGA - DEN
Nonstop4h 28mFrontier
Tue 12/1612:59 amDEN - LGA
1 stop8h 30mFrontier
Deal found 12/2![Frontier logo]()
$138
This Frontier deal was found by Cheapflights users on 11/30. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 12/134:29 pmJFK - DEN
Nonstop4h 40mFrontier
Mon 12/159:42 amDEN - JFK
Nonstop3h 47mFrontier
Deal found 11/30![Frontier logo]()
$138
This Kiwi.com deal was found by Cheapflights users on 12/2. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 12/1510:55 pmLGA - DEN
Nonstop4h 28mFrontier
Tue 12/166:00 amDEN - LGA
1 stop11h 11mFrontier
Deal found 12/2![Frontier logo]()
$139
This Kiwi.com deal was found by Cheapflights users on 11/29. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 12/134:29 pmJFK - DEN
Nonstop4h 40mFrontier
Tue 12/169:33 amDEN - JFK
1 stop17h 57mFrontier
Deal found 11/29![Frontier logo]()
$139
This Frontier deal was found by Cheapflights users on 11/30. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 12/810:08 pmLGA - DEN
1 stop13h 47mFrontier
Fri 12/124:25 pmDEN - LGA
Nonstop3h 35mFrontier
Deal found 11/30![Frontier logo]()
$140
This Kiwi.com deal was found by Cheapflights users on 12/2. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 12/1210:55 pmLGA - DEN
Nonstop4h 28mFrontier
Thu 12/186:00 amDEN - LGA
1 stop14h 00mFrontier
Deal found 12/2![Frontier logo]()
$141
This Kiwi.com deal was found by Cheapflights users on 12/2. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 12/1210:55 pmLGA - DEN
Nonstop4h 28mMultiple Airlines
Tue 12/168:00 amDEN - LGA
2 stops13h 05mMultiple Airlines
Deal found 12/2![Multiple Airlines logo]()
$144
Find flight deals from New York to Boulder
Keep the following information in mind while searching for New York to Boulder flight deals. Data was last updated December 2, 2025.
Most accurate provider | CheapOair 3 stars |
|---|---|
Most trusted provider | CheapOair 3 stars |
Round-trip from | $128 (Kiwi.com) |
One-way from | $87 (Kiwi.com) |
Popular in | April |
Cheapest in | January |
Average price | $357 |
Cheapflights Fare Finder
Customize your flight search to find flights from New York to Boulder that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated December 2, 2025.
Use the filters below to find and compare flights from New York to Boulder that are best for you.
Fly from
New York
Fly to
Boulder
Route
Depart
Return
Price
New YorkDenver
LGA - DEN
LGADEN
New York LaGuardia
Mon 2/2
4:45 pm-9:20 pm
1 stop6h 35m
Denver Intl
Wed 2/4
8:15 am-1:55 pm
Nonstop3h 40m
$173
New YorkDenver
LGA - DEN
LGADEN
New York LaGuardia
Thu 1/8
7:30 am-10:25 am
Nonstop4h 55m
Denver Intl
Tue 1/13
5:45 pm-11:31 pm
Nonstop3h 46m
$177
New YorkDenver
LGA - DEN
LGADEN
New York LaGuardia
Tue 1/13
2:00 pm-4:44 pm
Nonstop4h 44m
Denver Intl
Tue 1/20
12:30 am-8:48 am
1 stop6h 18m
$187
New YorkDenver
LGA - DEN
LGADEN
New York LaGuardia
Tue 1/20
7:15 am-10:00 am
Nonstop4h 45m
Denver Intl
Fri 1/23
5:05 pm-10:40 pm
Nonstop3h 35m
$190
New YorkDenver
LGA - DEN
LGADEN
New York LaGuardia
Tue 2/10
4:30 pm-7:10 pm
Nonstop4h 40m
Denver Intl
Tue 2/17
6:35 am-12:20 pm
Nonstop3h 45m
$191
New YorkDenver
LGA - DEN
LGADEN
New York LaGuardia
Mon 12/15
6:10 pm-8:37 pm
Nonstop4h 27m
Denver Intl
Thu 12/25
11:12 am-4:50 pm
Nonstop3h 38m
$192
New YorkDenver
LGA - DEN
LGADEN
New York LaGuardia
Wed 1/28
6:00 pm-8:44 pm
Nonstop4h 44m
Denver Intl
Sat 2/7
7:30 am-1:28 pm
Nonstop3h 58m
$197
New YorkDenver
LGA - DEN
LGADEN
New York LaGuardia
Thu 1/8
6:00 pm-8:44 pm
Nonstop4h 44m
Denver Intl
Sat 1/10
7:30 am-1:28 pm
Nonstop3h 58m
$202
New YorkDenver
LGA - DEN
LGADEN
New York LaGuardia
Mon 1/12
6:00 pm-8:44 pm
Nonstop4h 44m
Denver Intl
Tue 1/13
7:10 am-1:04 pm
Nonstop3h 54m
$202
New YorkDenver
LGA - DEN
LGADEN
New York LaGuardia
Thu 1/8
4:50 pm-7:28 pm
Nonstop4h 38m
Denver Intl
Sun 1/11
3:45 pm-9:28 pm
Nonstop3h 43m
$207
Showing 1-10 of 60 results
Best time to book a flight from New York to Boulder
Have a flexible travel schedule? Discover the best time to fly to Boulder from New York with our price prediction graph.
Estimated round-trip price
Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.
Cheapflights Insights
Everything you need to know about your flight from New York to Boulder
How far ahead should I book a flight from New York to Boulder?
Use this chart to determine the optimal time to book a round-trip flight from New York to Boulder. Price data was last updated on November 28, 2025.
The price you pay for your flight from New York to Boulder may vary depending on when you book. For the best chance of a lower fare, look to book 75 days in advance of your trip. Fares are likely to increase a fortnight or so before your departure date.
What is the cheapest month to book a flight from New York to Boulder?
Currently, October is the cheapest month in which you can book a flight from New York to Boulder (average of $88). Flying from New York to Boulder in May is currently the most expensive (average of $143). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.
What is the cheapest time of day to fly from NYC to BD9?
Find hourly flight availability from New York to Boulder. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated December 2, 2025.
A simple way to save on the total cost of your ticket is to fly from New York to Boulder in the evening. If you’re flexible enough to do this you can expect to save up to 28% on your trip compared to booking a flight in the afternoon.
What is the cheapest day to fly from New York to Boulder?
Use this chart to determine the cheapest time to fly round-trip from New York to Boulder. Price data was last updated on December 16, 2024.
Travelers seeking maximum savings on their New York to Boulder flight should consider departing on Saturday evenings when fares are most often at their lowest. Sunday afternoons flights should be avoided if possible as fares are typically the most expensive at this time.
Weekly flight availability from New York to Boulder
Explore weekly flight availability from New York to Boulder. Discover flights operating on different days of the week, giving you the flexibility to choose a travel day that best fits your plans. Compare info to find the most convenient option for your journey. Data last updated December 2, 2025.
The most flights from NYC to BD9 are scheduled on a Monday (51 on average). You will have fewer flight options on Tuesday, which is when the least amount of flights are scheduled (1 on average).
Reviews of airlines servicing Boulder
Get insights into the airlines that provide service to Boulder. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to Boulder. Reviews last updated December 2, 2025.
Read through reviews of airlines operating flights from New York to Boulder, such as Southwest, Delta, and United Airlines. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.
Boarding
8.1
Food
7.0
Entertainment
7.5
Overall
8.0
Comfort
8.0
Crew
8.6
Reviews
1 / 20
10.0
ExcellentWilliam Drew,Nov 2025
SJC - HNL
Boarding
8.1
Food
7.0
Entertainment
7.5
Overall
8.0
Comfort
8.0
Crew
8.6
Reviews
1 / 20
10.0
ExcellentWilliam Drew,Nov 2025
SJC - HNL
Boarding
8.1
Food
7.0
Entertainment
7.5
Overall
8.0
Comfort
8.0
Crew
8.6
Reviews
1 / 20
10.0
ExcellentWilliam Drew,Nov 2025
SJC - HNL
Boarding
8.1
Food
7.0
Entertainment
7.5
Overall
8.0
Comfort
8.0
Crew
8.6
Reviews
1 / 20
10.0
ExcellentWilliam Drew,Nov 2025
SJC - HNL
Boarding
8.1
Food
7.0
Entertainment
7.5
Overall
8.0
Comfort
8.0
Crew
8.6
Reviews
1 / 20
10.0
ExcellentWilliam Drew,Nov 2025
SJC - HNL
Boarding
8.1
Food
7.0
Entertainment
7.5
Overall
8.0
Comfort
8.0
Crew
8.6
Reviews
1 / 20
10.0
ExcellentWilliam Drew,Nov 2025
SJC - HNL
Related info for your journey
Find useful and relevant information for your journey from New York to Boulder. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.
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Alternative routes for New York to Boulder
See prices for flight routes from nearby airports that may be better suited for you.
Top 6 airlines flying from New York to Boulder
Discover the top 6 airlines that operate flights from New York to Boulder. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated December 2, 2025.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$73 | Average$211 | FlexibilityNo cancel fee | On-time62% | |
| Cheapest$129 | Average$323 | FlexibilityNo cancel fee | On-time62% | |
| Cheapest$146 | Average$407 | FlexibilityNo cancel fee | On-timeN/A | |
| Cheapest$196 | Average$391 | FlexibilityNo cancel fee | On-time71% | |
| Cheapest$210 | Average$434 | FlexibilityNo cancel fee | On-time69% | |
| Cheapest$218 | Average$404 | FlexibilityNo cancel fee | On-time63% |