Find flights
Airlines

$809+ 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 13/11. Fares are subject to change and may not be available on all flights or dates of travel.
— DEN
2 Aug — 9 Aug1
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 28 July 2025.

Return from

$1,771

One-way from

$809

Popular in

July

Cheapest in

March

Average price

$2,194
27/10-10/11
  • 27/10-10/11
  • 4 total stops
  • 54h 56m total
  • Auckland to Denver
Search Deals
13/11
  • 13/11
  • 2 total stops
  • 24h 11m total
  • Auckland to Boulder
Search Deals
Highest demand for flights based on searches. 9% potential increase in price ($353 potential increase over avg. return price).
Search Deals
Cheapest flight prices on average. 1% potential price decrease ($37 potential savings vs. average return price).
Search Deals
Average for return flights in July 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 28 July 2025.

Mon 27/1006:15AKL - DEN
2 stops29h 11mMultiple Airlines
Mon 10/1119:05DEN - AKL
2 stops25h 45mMultiple Airlines
Deal found 27/7$1,771
Sat 22/1106:15AKL - DEN
2 stops26h 22mAir Canada
Sun 30/1115:53DEN - AKL
1 stop23h 07mAir Canada
Deal found 26/7$1,776
Mon 27/1014:50AKL - DEN
2 stops23h 56mUnited Airlines
Mon 10/1110:12DEN - AKL
1 stop23h 53mUnited Airlines
Deal found 28/7$2,088
Tue 9/919:40AKL - DEN
1 stop21h 50mAir New Zealand
Tue 16/917:59DEN - AKL
1 stop19h 11mAir New Zealand
Deal found 26/7$2,100
Sun 26/1001:15AKL - DEN
3 stops37h 25mSingapore Airlines
Mon 10/1117:40DEN - AKL
2 stops33h 55mSingapore Airlines
Deal found 28/7$5,165
Wed 24/906:00AKL - DEN
2 stops23h 08mQantas Airways
Sun 5/1014:47DEN - AKL
2 stops28h 18mQantas Airways
Deal found 26/7$11,551

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 28 July 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

06:15-16:26

2 stops29h 11m

Denver Intl

Mon 10/11

19:05-16:50

2 stops25h 45m

$1,771

AucklandDenver

AKL - DEN

AKLDEN

Auckland Intl

Sat 22/11

06:15-12:37

2 stops26h 22m

Denver Intl

Sun 30/11

15:53-11:00

1 stop23h 07m

$1,776

AucklandDenver

AKL - DEN

AKLDEN

Auckland Intl

Mon 27/10

14:50-19:46

2 stops23h 56m

Denver Intl

Mon 10/11

10:12-06:05

1 stop23h 53m

$2,088

AucklandDenver

AKL - DEN

AKLDEN

Auckland Intl

Tue 9/9

19:40-23:30

1 stop21h 50m

Denver Intl

Tue 16/9

17:59-07:10

1 stop19h 11m

$2,100

AucklandDenver

AKL - DEN

AKLDEN

Auckland Intl

Sun 18/1

13:20-08:10

1 stop38h 50m

Denver Intl

Mon 26/1

13:00-10:05

1 stop25h 05m

$2,126

AucklandDenver

AKL - DEN

AKLDEN

Auckland Intl

Sat 17/1

01:15-16:24

2 stops35h 09m

Denver Intl

Mon 26/1

17:20-23:35

2 stops34h 15m

$4,347

AucklandDenver

AKL - DEN

AKLDEN

Auckland Intl

Wed 24/9

06:00-11:08

2 stops23h 08m

Denver Intl

Sun 5/10

14:47-14:05

2 stops28h 18m

$11,551

AucklandDenver

AKL - DEN

AKLDEN

Auckland Intl

Thu 13/11

15:10-19:21

2 stops24h 11m

$809

AucklandDenver

AKL - DEN

AKLDEN

Auckland Intl

Mon 24/11

07:00-12:37

2 stops25h 37m

$899

AucklandDenver

AKL - DEN

AKLDEN

Auckland Intl

Mon 24/11

13:20-11:31

1 stop18h 11m

$1,063

Flights are sorted by cheapest return flights first.

Deals found on 27/7

Showing 1-10 of 11 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 25 July 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 26 hours 22 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 $1,033
Qantas Airways
Qantas Airways
From $864
United Airlines
United Airlines
From $772
Air Canada
Air Canada
From $561

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 28 July 2025.
Read through reviews of airlines serving the United States, such as Singapore Airlines, Air New Zealand, andQantas Airways. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.
Singapore Airlines
8.1
Very Good
1,335 reviews
Check prices

Overall

8.1

Food

7.7

Comfort

7.9

Entertainment

8.0

Crew

8.6

Boarding

8.2

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
1,335 reviews
Singapore Airlines
8.1
Very Good
1,335 reviews
Check prices

Overall

8.1

Food

7.7

Comfort

7.9

Entertainment

8.0

Crew

8.6

Boarding

8.2

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
502 reviews
Singapore Airlines
8.1
Very Good
1,335 reviews
Check prices

Overall

8.1

Food

7.7

Comfort

7.9

Entertainment

8.0

Crew

8.6

Boarding

8.2

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
883 reviews
Singapore Airlines
8.1
Very Good
1,335 reviews
Check prices

Overall

8.1

Food

7.7

Comfort

7.9

Entertainment

8.0

Crew

8.6

Boarding

8.2

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
8,886 reviews
Singapore Airlines
8.1
Very Good
1,335 reviews
Check prices

Overall

8.1

Food

7.7

Comfort

7.9

Entertainment

8.0

Crew

8.6

Boarding

8.2

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.
American Airlines
7.2
Good
10,000 reviews
Singapore Airlines
8.1
Very Good
1,335 reviews
Check prices

Overall

8.1

Food

7.7

Comfort

7.9

Entertainment

8.0

Crew

8.6

Boarding

8.2

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, Queenstown Intl offers the quickest one-way flight (23 hours 25 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.