HomeSearch by dateVacation packagesHotelsFlight dealsCar rentalTravel tips & news

Cheap flights to Boulder, CO from $39

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 8/17. 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.
CMH — DEN
Jun 16 — Jun 231
From?
To?
Sun 6/16
Sun 6/23
1 adult, Economy
We work with more than 300 partners to bring you better travel deals

Flights to Boulder in 2024

Find the latest flights to Boulder in 2024, with up-to-date prices and availability. In the last 7 days, Cheapflights users made a total of 3,020,828 searches and data was last updated on June 11, 2024.

Popular in

December

Cheapest in

September

Average price

$353

Round-trip from

$78

One-way from

$39
High demand for flights, 5% potential price rise
Best time to find cheap flights, 2% potential price drop
Average for round-trip flights in June 2024
From New York to Denver Intl
One-way flight from New York to Boulder

Cheap flights to Boulder in June & July 2024

Discover affordable flights and deals to Boulder in June and July 2024. In the last 7 days, Cheapflights users made a total of 3,020,828 searches and data was last updated on June 11, 2024.
These are some of the cheapest-priced fares users can find on flights departing to Boulder in June and July 2024. If these deals fall outside of your budget, be sure to come back soon as prices update often.
Wed 7/1010:59 pmLGA - DEN
Nonstop4h 16mFrontier
Wed 7/174:15 pmDEN - LGA
Nonstop3h 45mFrontier
Deal found 6/10$120
Wed 7/1010:59 pmLGA - DEN
Nonstop4h 16mFrontier
Tue 7/164:15 pmDEN - LGA
Nonstop3h 45mFrontier
Deal found 6/10$121
Wed 7/1710:59 pmLGA - DEN
Nonstop4h 16mFrontier
Wed 7/244:15 pmDEN - LGA
Nonstop3h 45mFrontier
Deal found 6/9$122
Mon 7/2210:52 pmLGA - DEN
Nonstop4h 16mFrontier
Tue 8/64:15 pmDEN - LGA
Nonstop3h 45mFrontier
Deal found 6/10$131
Tue 7/3010:52 pmLGA - DEN
Nonstop4h 16mFrontier
Tue 8/64:15 pmDEN - LGA
Nonstop3h 45mFrontier
Deal found 6/10$133
Wed 7/3110:59 pmLGA - DEN
Nonstop4h 16mFrontier
Tue 8/64:15 pmDEN - LGA
Nonstop3h 45mFrontier
Deal found 6/10$135
Tue 7/2310:52 pmLGA - DEN
Nonstop4h 16mFrontier
Tue 8/64:15 pmDEN - LGA
Nonstop3h 45mFrontier
Deal found 6/10$136
Fri 7/1210:52 pmLGA - DEN
Nonstop4h 16mFrontier
Wed 7/174:15 pmDEN - LGA
Nonstop3h 45mFrontier
Deal found 6/10$138
Thu 7/410:50 pmLGA - DEN
Nonstop4h 23mFrontier
Wed 7/104:15 pmDEN - LGA
Nonstop3h 45mFrontier
Deal found 6/10$140

Boulder 2024 flight deals

Explore flight deals for Boulder in 2024, offering the best prices and options to suit your preferences. In the last 7 days, Cheapflights users made a total of 3,020,828 searches and data were last updated on June 11, 2024.
These are some of the best deals we've found on flights to Boulder in 2024 at this time. Check back soon for alternative fares.
Sat 9/710:50 pmLGA - DEN
Nonstop4h 27mFrontier
Sat 9/144:15 pmDEN - LGA
Nonstop3h 45mFrontier
Deal found 6/10$78
Thu 9/1910:50 pmLGA - DEN
Nonstop4h 27mFrontier
Mon 9/234:15 pmDEN - LGA
Nonstop3h 45mFrontier
Deal found 6/10$98
Thu 8/2910:50 pmLGA - DEN
Nonstop4h 27mFrontier
Fri 9/64:15 pmDEN - LGA
Nonstop3h 45mFrontier
Deal found 6/9$100
Fri 9/1310:50 pmLGA - DEN
Nonstop4h 27mFrontier
Mon 9/164:15 pmDEN - LGA
Nonstop3h 45mFrontier
Deal found 6/10$101
Wed 7/1010:59 pmLGA - DEN
Nonstop4h 16mFrontier
Wed 7/174:15 pmDEN - LGA
Nonstop3h 45mFrontier
Deal found 6/10$120
Wed 7/1010:59 pmLGA - DEN
Nonstop4h 16mFrontier
Tue 7/164:15 pmDEN - LGA
Nonstop3h 45mFrontier
Deal found 6/10$121
Wed 7/1710:59 pmLGA - DEN
Nonstop4h 16mFrontier
Wed 7/244:15 pmDEN - LGA
Nonstop3h 45mFrontier
Deal found 6/9$122
Fri 9/2710:50 pmLGA - DEN
Nonstop4h 27mFrontier
Mon 9/304:15 pmDEN - LGA
Nonstop3h 45mFrontier
Deal found 6/10$125
Fri 9/1310:50 pmLGA - DEN
Nonstop4h 27mFrontier
Fri 10/44:15 pmDEN - LGA
Nonstop3h 45mFrontier
Deal found 6/10$128

Flights to Boulder departing soon

Discover available last-minute flight options to Boulder, providing immediate availability and potentially lower prices. In the last 7 days, Cheapflights users made a total of 3,020,828 searches and data was last updated on June 11, 2024.
Browse some of the best deals on flights leaving last minute to Boulder. Double check the price, date, and time of your last-minute flight.
Wed 6/1910:59 pmLGA - DEN
Nonstop4h 23mFrontier
Tue 7/94:15 pmDEN - LGA
Nonstop3h 45mFrontier
Deal found 6/10$163
Tue 6/1810:52 amLGA - DEN
1 stop15h 07mFrontier
Wed 6/194:18 pmDEN - LGA
Nonstop3h 42mFrontier
Deal found 6/10$165
Wed 6/1910:59 pmLGA - DEN
Nonstop4h 23mFrontier
Tue 7/24:18 pmDEN - LGA
Nonstop3h 42mFrontier
Deal found 6/10$168
Tue 6/1810:50 pmLGA - DEN
Nonstop4h 23mFrontier
Tue 7/24:18 pmDEN - LGA
Nonstop3h 42mFrontier
Deal found 6/10$170
Wed 6/1910:59 pmLGA - DEN
Nonstop4h 23mFrontier
Tue 6/256:00 amDEN - LGA
1 stop7h 29mFrontier
Deal found 6/10$175
Wed 6/1910:59 pmLGA - DEN
Nonstop4h 23mFrontier
Tue 6/256:00 amDEN - LGA
1 stop7h 29mFrontier
Deal found 6/10$177
Thu 6/2010:59 pmLGA - DEN
Nonstop4h 23mFrontier
Tue 7/24:18 pmDEN - LGA
Nonstop3h 42mFrontier
Deal found 6/10$178
Thu 6/2010:59 pmLGA - DEN
Nonstop4h 23mFrontier
Tue 6/256:00 amDEN - LGA
1 stop7h 29mFrontier
Deal found 6/10$181
Wed 6/1910:59 pmLGA - DEN
Nonstop4h 23mFrontier
Mon 7/14:18 pmDEN - LGA
Nonstop3h 42mFrontier
Deal found 6/10$183

One-way flights to Boulder

Explore one-way flight options to Boulder for greater flexibility in your travel plans. Find up-to-date pricing and availability for one-way flights. In the last 7 days, Cheapflights users made a total of 3,020,828 searches and data was last updated on June 11, 2024.
Consider booking one of these one-way flights heading to Boulder. Book a round-trip flight to Boulder instead by using the search form above.
Sat 8/1710:50 pmLGA - DEN
Nonstop4h 27mFrontier
Deal found 6/10$39
Sat 9/710:50 pmLGA - DEN
Nonstop4h 27mFrontier
Deal found 6/10$41
Sat 9/710:50 pmLGA - DEN
Nonstop4h 27mFrontier
Deal found 6/10$47
Mon 9/910:50 pmLGA - DEN
Nonstop4h 27mFrontier
Deal found 6/10$49
Mon 8/2610:50 pmLGA - DEN
Nonstop4h 27mFrontier
Deal found 6/9$51
Thu 9/1210:50 pmLGA - DEN
Nonstop4h 27mFrontier
Deal found 6/10$54
Thu 8/2210:50 pmLGA - DEN
Nonstop4h 27mFrontier
Deal found 6/10$57
Sat 10/1210:50 pmLGA - DEN
Nonstop4h 27mFrontier
Deal found 6/10$59
Wed 7/1010:59 pmLGA - DEN
Nonstop4h 16mFrontier
Deal found 6/10$67

Find flights to Boulder within your budget

Locate flights to Boulder that fit your budget, with regularly updated fares and availability. In the last 7 days, Cheapflights users made a total of 3,020,828 searches and data was last updated on June 11, 2024.

Fly from

Any airport

Budget

$78 - $240

Route

Depart

Return

Price

New York LaGuardiaDenver Intl

LGA - DEN

LGADEN

New York LaGuardia

Sat 9/7

Nonstop4h 27m

Denver Intl

Sat 9/14

Nonstop3h 45m

$78

New York LaGuardiaDenver Intl

LGA - DEN

LGADEN

New York LaGuardia

Thu 9/12

Nonstop4h 27m

Denver Intl

Mon 9/16

Nonstop3h 45m

$98

New York LaGuardiaDenver Intl

LGA - DEN

LGADEN

New York LaGuardia

Thu 8/29

Nonstop4h 27m

Denver Intl

Fri 9/6

Nonstop3h 45m

$100

New York LaGuardiaDenver Intl

LGA - DEN

LGADEN

New York LaGuardia

Fri 9/13

Nonstop4h 27m

Denver Intl

Mon 9/16

Nonstop3h 45m

$101

New York LaGuardiaDenver Intl

LGA - DEN

LGADEN

New York LaGuardia

Fri 9/6

Nonstop4h 32m

Denver Intl

Sat 9/7

Nonstop3h 52m

$145

New York John F Kennedy IntlDenver Intl

JFK - DEN

JFKDEN

New York John F Kennedy Intl

Sat 8/17

1 stop7h 31m

Denver Intl

Sat 8/24

1 stop5h 40m

$198

New York LaGuardiaDenver Intl

LGA - DEN

LGADEN

New York LaGuardia

Fri 8/16

Nonstop4h 34m

Denver Intl

Wed 8/21

Nonstop3h 47m

$215

New York John F Kennedy IntlDenver Intl

JFK - DEN

JFKDEN

New York John F Kennedy Intl

Thu 9/12

Nonstop4h 37m

Denver Intl

Tue 9/17

1 stop9h 33m

$235

New York John F Kennedy IntlDenver Intl

JFK - DEN

JFKDEN

New York John F Kennedy Intl

Wed 7/24

1 stop7h 06m

Denver Intl

Tue 7/30

1 stop15h 56m

$240

Flights are sorted by cheapest first

Deals found on 6/10

Best time to book a flight to Boulder

Have a flexible travel schedule? Discover the best time to fly to Boulder 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.

Temperature and rainfall in Boulder by month

Plan your trip to Boulder by taking into account the average temperature and rainfall totals by month.

DEN

Temperature

30.2 - 73.4 °F

If weather is an important factor for your trip to Boulder, use this chart to help with planning. For those seeking warmer temperatures, July is the ideal time of year to visit, when temperatures reach an average of 73.4 F. Travelers looking to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 30.2 F).

When is the best time to book a flight to Boulder?

Use this chart to determine the optimal time to book a round-trip flight to Boulder. Price data was last updated on May 31, 2024.
Booking 61 days in advance of your planned departure date is, on average, the best time to get cheap flights to Boulder. The general trend is that the closer you book to the departure date, the more expensive your flight will be.
Search Deals

When is the cheapest time to fly to Boulder?

Use this chart to determine the cheapest time to fly round-trip to Boulder. Price data was last updated on June 9, 2024.
Morning
Noon
Afternoon
Evening
All times are departure.
Users looking for the lowest fares to Boulder should consider flying on Monday evenings, when prices are typically cheapest. Budget-minded travelers will want to avoid Sunday at noon, when prices are usually at their highest.
Search Deals

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 June 11, 2024.
Read through reviews of airlines servicing Boulder, such as American Airlines, Alaska Airlines and Frontier. Users can see the overall rating for each airline as well as how each is rated in terms of entertainment options, comfort, food, crew/service, and boarding process.
Southwest
8.2
Very good
5,889 reviews

Boarding

8.3

Comfort

8.1

Entertainment

7.8

Food

7.3

Overall

8.2

Crew

8.7

Reviews

1 / 10

Wish the there were an electrical outlet to plug the phone. it died within 10 minutes of being in the air.

Southwest
8.2
Very good
5,889 reviews
Southwest
8.2
Very good
5,889 reviews

Boarding

8.3

Comfort

8.1

Entertainment

7.8

Food

7.3

Overall

8.2

Crew

8.7

Reviews

1 / 10

Wish the there were an electrical outlet to plug the phone. it died within 10 minutes of being in the air.

Alaska Airlines
8.1
Very good
9,267 reviews
Southwest
8.2
Very good
5,889 reviews

Boarding

8.3

Comfort

8.1

Entertainment

7.8

Food

7.3

Overall

8.2

Crew

8.7

Reviews

1 / 10

Wish the there were an electrical outlet to plug the phone. it died within 10 minutes of being in the air.

Delta
8.0
Very good
10,277 reviews
Southwest
8.2
Very good
5,889 reviews

Boarding

8.3

Comfort

8.1

Entertainment

7.8

Food

7.3

Overall

8.2

Crew

8.7

Reviews

1 / 10

Wish the there were an electrical outlet to plug the phone. it died within 10 minutes of being in the air.

JetBlue
7.6
Good
4,271 reviews
Southwest
8.2
Very good
5,889 reviews

Boarding

8.3

Comfort

8.1

Entertainment

7.8

Food

7.3

Overall

8.2

Crew

8.7

Reviews

1 / 10

Wish the there were an electrical outlet to plug the phone. it died within 10 minutes of being in the air.

United Airlines
7.4
Good
10,647 reviews
Southwest
8.2
Very good
5,889 reviews

Boarding

8.3

Comfort

8.1

Entertainment

7.8

Food

7.3

Overall

8.2

Crew

8.7

Reviews

1 / 10

Wish the there were an electrical outlet to plug the phone. it died within 10 minutes of being in the air.

  • Can I find cheaper flights to Boulder if I am willing to have layovers?

    Yes, flights with layovers are often cheaper than direct flights. Keep an eye out for flight deals to Boulder on Cheapflights that require 1 or 2 stops for potential cost savings.

  • What is the best airline to fly to Boulder?

    Based on reviews from Cheapflights users, Spirit Airlines is rated the highest out of the airlines that fly to Boulder.

  • How much is a round-trip flight to Boulder?

    A round-trip flight to Boulder will typically cost around $1,093, however they can be found for as little as $38.

  • Where does the fastest flight to Boulder depart from?

    For those looking to save time traveling to Boulder, Colorado Springs offers the quickest one-way flight (0 hours 51 minutes).

  • Does Denver Intl have rental cars?

    Yes. Those touching down at Denver Intl can take advantage of the rental car services offered upon their arrival.

  • Are there hotels close to Denver Intl?

    Yes. Denver Intl has hotels nearby for those requiring accommodations. The Westin Denver International Airport is the closest property to Denver Intl (0.0 mi away from Denver Intl).

See more FAQs

Browse thousands of different options on Cheapflights for your next trip

Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.
USA to Canada flights
Los Angeles to Dallas flights
San Francisco to Boston flights
New York to Houston flights
New York to Madrid flights
Los Angeles to Las Vegas flights
USA to India flights
Dallas to Austin flights
Houston to Phoenix flights
New York to Bangkok flights
Chicago to Mexico City flights
New York to Hamilton, Pembroke flights

Search flights to Boulder by cabin class

Find flights to Boulder, based on your preferred cabin class, be it economy, premium economy, business, or first class.
First Class
Business Class
Prem Econ Class
Economy Class

Book a flight to one of these trending destinations

User searches for flights to these destinations increased 20% or more in the past 90 days compared to other destinations
Flights to Gaziantep
Flights to Miyakojima Hirara
Flights to Figari-Sud Corse
Flights to Mason City
Flights to Komatsu
Flights to Sendai
Flights to Rhinelander Oneida County
Flights to Constanţa Mihail Kogalniceanu
Flights to Brainerd Crow Wing County
Flights to Reus
Flights to Virac
Flights to Neiva La Marguita
Flights to Pellston Emmet County
Flights to Urumqi
Flights to Bastia Poretta
Flights to Samos
Flights to Hyannis Barnstable
Flights to Provincetown
Flights to Alghero-Fertilia
Flights to Laayoune Hassan I
Flights to Devils Lake
Flights to Vava'u Lupepau'U
Flights to Hakodate
Flights to Edremit/Korfez
100% Free
Cheapflights is completely free to use, so you can start saving the moment you arrive.
Book with Flexibility
Our users can plan ahead with confidence and find flights with no change fees
Travel Smart
Millions of people come to us for their flight needs every year. We help make travel planning easy by providing useful insights and data-driven graphs that can inform your decisions.
View all available airlines