Find flights
Airlines

$862+ Cheap flights to Boulder

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 14/7. Fares are subject to change and may not be available on all flights or dates of travel.
— DEN
18 Jun — 25 Jun1
1 adult

Flights to Boulder in 2025

Find the latest flights to Boulder in 2025, with up-to-date prices and availability. In the last 7 days, Cheapflights users made a total of 134,765 searches and data was last updated on 13 June 2025.

Return from

$1,877

One-way from

$862

Popular in

August

Cheapest in

September

Average price

$2,176
Air Canada
  • Air Canada
  • 27/10-10/11
  • 4 total stops
  • 56h 11m total
  • Auckland to Denver
Search Deals
14/7
  • 14/7
  • 2 total stops
  • 37h 56m total
  • Auckland to Boulder
Search Deals
Highest demand for flights based on searches. 3% potential increase in price ($103 potential increase over avg. return price).
Search Deals
Cheapest flight prices on average. 1% potential price decrease ($51 potential savings vs. average return price).
Search Deals
Average for return flights in June 2025
Search Deals

Find flight deals to Boulder

Cheapest flights to Boulder
Explore the most affordable flight options available to Boulder. Find the lowest fares based on data from user searches, with prices last updated on 13 June 2025.

Mon 27/1007:00AKL - DEN
2 stops28h 26mAir Canada
Mon 10/1119:15DEN - AKL
2 stops27h 45mAir Canada
Deal found 12/6$1,877
Sat 26/706:00AKL - DEN
2 stops24h 28mMultiple Airlines
Sat 2/811:35DEN - AKL
2 stops33h 20mMultiple Airlines
Deal found 11/6$1,992
Mon 27/1014:50AKL - DEN
2 stops27h 05mUnited Airlines
Mon 10/1119:05DEN - AKL
1 stop18h 05mUnited Airlines
Deal found 11/6$2,123
Sat 26/719:40AKL - DEN
1 stop30h 44mAir New Zealand
Sat 2/820:31DEN - AKL
1 stop38h 59mAir New Zealand
Deal found 11/6$2,163
Tue 5/815:55AKL - DEN
2 stops25h 14mQantas Airways
Mon 25/817:59DEN - AKL
2 stops25h 46mQantas Airways
Deal found 11/6$2,229
Fri 21/1101:20AKL - DEN
2 stops32h 09mSingapore Airlines
Sun 30/1117:40DEN - AKL
2 stops33h 55mSingapore Airlines
Deal found 12/6$4,367

Cheapflights Fare Finder

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 134,765 searches and data was last updated on 13 June 2025.
Use the filters below to find and compare flights to Boulder that are best for you.

Fly from

Auckland

Route

Departure

Return

Price

AucklandDenver

AKL - DEN

AKLDEN

Auckland Intl

Mon 27/10

07:00-16:26

2 stops28h 26m

Denver Intl

Mon 10/11

19:15-19:00

2 stops27h 45m

$1,877

AucklandDenver

AKL - DEN

AKLDEN

Auckland Intl

Sat 26/7

06:00-12:28

2 stops24h 28m

Denver Intl

Sat 2/8

11:35-14:55

2 stops33h 20m

$1,992

AucklandDenver

AKL - DEN

AKLDEN

Auckland Intl

Mon 27/10

14:50-22:55

2 stops27h 05m

Denver Intl

Mon 10/11

19:05-09:10

1 stop18h 05m

$2,123

AucklandDenver

AKL - DEN

AKLDEN

Auckland Intl

Sat 26/7

19:40-08:24

1 stop30h 44m

Denver Intl

Sat 2/8

20:31-05:30

1 stop38h 59m

$2,163

AucklandDenver

AKL - DEN

AKLDEN

Auckland Intl

Tue 5/8

15:55-23:09

2 stops25h 14m

Denver Intl

Mon 25/8

17:59-13:45

2 stops25h 46m

$2,229

AucklandDenver

AKL - DEN

AKLDEN

Auckland Intl

Fri 21/11

01:20-13:29

2 stops32h 09m

Denver Intl

Sun 30/11

17:40-23:35

2 stops33h 55m

$4,367

AucklandDenver

AKL - DEN

AKLDEN

Auckland Intl

Mon 14/7

13:55-09:51

2 stops37h 56m

$862

AucklandDenver

AKL - DEN

AKLDEN

Auckland Intl

Mon 24/11

07:00-12:37

2 stops25h 37m

$962

AucklandDenver

AKL - DEN

AKLDEN

Auckland Intl

Mon 24/11

19:45-22:07

1 stop22h 22m

$1,118

AucklandDenver

AKL - DEN

AKLDEN

Auckland Intl

Sat 26/7

13:50-20:05

1 stop24h 15m

$1,164

Flights are sorted by cheapest return flights first.

Deals found on 13/6

Showing 1-10 of 12 results
1
2

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 return 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 to Boulder

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

Use this chart to determine the optimal time to book a return flight from Auckland to Boulder. Price data was last updated on 13 June 2025.

To ensure you get the cheapest price possible for a flight to Boulder, you should look to book at least 42 days in advance of your intended travel date. The price of your flight may increase if you delay and leave booking until a week or so before departure.

How long is the flight to Boulder?

On average, a flight from Auckland to Boulder takes 16 hours 40 minutes. Flights to Boulder from other popular cities in New Zealand will vary in length. Below are a few examples of popular routes and their flight times.

When is the cheapest time to fly to Boulder?

Use this chart to determine the cheapest time to fly return from Auckland to Boulder. Price data was last updated on 16 December 2024.

Users looking for the lowest fares to Boulder should consider flying on Wednesday afternoons, when prices are typically cheapest. Budget-minded travellers will want to avoid Monday afternoons, when prices are usually at their highest.

What are the most popular airlines that fly to Boulder?

The most popular airlines flying from Auckland to Boulder are Air New Zealand, Qantas Airways and Air Canada.

Air New Zealand
Air New Zealand
From $1,023
Qantas Airways
Qantas Airways
From $886
Air Canada
Air Canada
From $561
United Airlines
United Airlines
From $785

What are the cheapest airlines that fly to Boulder?

The cheapest airlines flying from Auckland to Boulder are Air Canada, United Airlines and Qantas Airways.

Rainfall in Boulder by month

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

In terms of precipitation, rainfall in Boulder ranges from 13.0 - 58.0 mm per month. May is typically the wettest month, when rainfall can reach 58.0 mm. January is typically the driest time to visit Boulder when rainfall is around 13.0 mm.

Temperature in Boulder by month

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

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 23.0 C. Travellers hoping to avoid the cold should look outside of January, when temperatures are typically at their lowest (around -1.0 C).

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 13 June 2025.
Singapore Airlines
8.1
Very Good
1,304 reviews
Check prices

Entertainment

8.0

Overall

8.1

Boarding

8.2

Food

7.7

Comfort

7.9

Crew

8.6

Reviews

1 / 20
8.0
Excellent

Anonymous,Dec 2024

NRT - LAX

Crew and in flight experience were great! I felt safe in the plane. Only downside was sitting in economy and the seat/person in front of me who had their seat reclined most of the flight (9 hrs) which made it difficult to eat or be fully comfortable.
Singapore Airlines
8.1
Very Good
1,304 reviews
Singapore Airlines
8.1
Very Good
1,304 reviews
Check prices

Entertainment

8.0

Overall

8.1

Boarding

8.2

Food

7.7

Comfort

7.9

Crew

8.6

Reviews

1 / 20
8.0
Excellent

Anonymous,Dec 2024

NRT - LAX

Crew and in flight experience were great! I felt safe in the plane. Only downside was sitting in economy and the seat/person in front of me who had their seat reclined most of the flight (9 hrs) which made it difficult to eat or be fully comfortable.
Air New Zealand
8.0
Very Good
483 reviews
Singapore Airlines
8.1
Very Good
1,304 reviews
Check prices

Entertainment

8.0

Overall

8.1

Boarding

8.2

Food

7.7

Comfort

7.9

Crew

8.6

Reviews

1 / 20
8.0
Excellent

Anonymous,Dec 2024

NRT - LAX

Crew and in flight experience were great! I felt safe in the plane. Only downside was sitting in economy and the seat/person in front of me who had their seat reclined most of the flight (9 hrs) which made it difficult to eat or be fully comfortable.
Qantas Airways
7.5
Good
854 reviews
Singapore Airlines
8.1
Very Good
1,304 reviews
Check prices

Entertainment

8.0

Overall

8.1

Boarding

8.2

Food

7.7

Comfort

7.9

Crew

8.6

Reviews

1 / 20
8.0
Excellent

Anonymous,Dec 2024

NRT - LAX

Crew and in flight experience were great! I felt safe in the plane. Only downside was sitting in economy and the seat/person in front of me who had their seat reclined most of the flight (9 hrs) which made it difficult to eat or be fully comfortable.
United Airlines
7.4
Good
8,791 reviews
Singapore Airlines
8.1
Very Good
1,304 reviews
Check prices

Entertainment

8.0

Overall

8.1

Boarding

8.2

Food

7.7

Comfort

7.9

Crew

8.6

Reviews

1 / 20
8.0
Excellent

Anonymous,Dec 2024

NRT - LAX

Crew and in flight experience were great! I felt safe in the plane. Only downside was sitting in economy and the seat/person in front of me who had their seat reclined most of the flight (9 hrs) which made it difficult to eat or be fully comfortable.
Air Canada
7.1
Good
9,539 reviews
Singapore Airlines
8.1
Very Good
1,304 reviews
Check prices

Entertainment

8.0

Overall

8.1

Boarding

8.2

Food

7.7

Comfort

7.9

Crew

8.6

Reviews

1 / 20
8.0
Excellent

Anonymous,Dec 2024

NRT - LAX

Crew and in flight experience were great! I felt safe in the plane. Only downside was sitting in economy and the seat/person in front of me who had their seat reclined most of the flight (9 hrs) which made it difficult to eat or be fully comfortable.

FAQs about flying to Boulder

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

    Yes, flights with stopovers 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, Air Canada is rated the highest out of the airlines that fly to Boulder.

  • Where does the fastest flight to Boulder depart from?

    For those looking to save time traveling to Boulder, Auckland Intl offers the quickest one-way flight (16 hours 40 minutes).

  • Does Denver Intl have rental cars?

    Yes. Those touching down at Denver Intl can take advantage of the car hire 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 km 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.

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

Fly with Cheapflights

Find the best flight deals on Cheapflights, where travellers can enjoy low prices and a wide availability of flights to their desired destinations.

How does Cheapflights help users find flights to Boulder?

Cheapflights goes through 900+ travel sites to look for the best flight deals for flights to Boulder. Too many options? Cheapflights also provides filters for things like airlines, price ranges, and number of stops to help you make a decision easily.

Why should you use Cheapflights to find cheap flight tickets to Boulder?

Cheapflights helps you find that perfect flight to Boulder by searching from hundreds of airlines and agencies you know and love. We are also free to use, in case you were wondering!

Can Cheapflights find flights to Boulder with no change fees?

Cheapflights does show flights with no change fees to all users. To see these options for flights to Boulder, users can toggle the no change fees filter when performing a flight search.

Can Cheapflights notify me if prices for flights to Boulder become cheaper?

Yes! Start tracking prices for Boulder flights today and get alerted when prices change. To subscribe and begin receiving alerts, click the bell icon next to the flight deals above and provide your email address.

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.
Site
©2025 Cheapflights