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$1,017+ 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 15/4. Fares are subject to change and may not be available on all flights or dates of travel.
— DEN
12 Jan — 19 Jan1
1 adult
1 adult, Economy, 0 bags

Flights to Boulder in 2025

Enter your travel dates to find the best prices.

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 December 2025.

Mon 22/1213:20AKL - DEN
1 stop18h 22mQantas Airways
Wed 7/117:29DEN - AKL
1 stop19h 41mQantas Airways
Deal found 11/12$2,403
Mon 22/1211:20AKL - DEN
2 stops42h 47mMultiple Airlines
Wed 7/111:35DEN - AKL
3 stops40h 00mMultiple Airlines
Deal found 11/12$7,719

Find flight deals to Boulder

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 December 2025.

Return from

$1,560

One-way from

$1,017

Popular in

April

Cheapest in

October

Average price

$2,116
Air Canada
  • Air Canada
  • 17/2-13/3
  • 3 total stops
  • 46h 08m total
  • Auckland to Denver
Search Deals
15/4
  • 15/4
  • 3 total stops
  • 27h 33m total
  • Auckland to Boulder
Search Deals
Highest demand for flights based on searches. 1% potential increase in price ($40 potential increase over avg. return price).
Search Deals
Cheapest flight prices on average. 1% potential price decrease ($38 potential savings vs. average return price).
Search Deals
Average for return flights in December 2025
Search Deals

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 December 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

Tue 17/2

06:15-12:28

2 stops26h 13m

Denver Intl

Fri 13/3

19:05-10:00

1 stop19h 55m

$1,560

AucklandDenver

AKL - DEN

AKLDEN

Auckland Intl

Sun 25/1

06:15-17:44

2 stops31h 29m

Denver Intl

Sun 1/2

19:05-17:20

2 stops26h 15m

$1,615

AucklandDenver

AKL - DEN

AKLDEN

Auckland Intl

Tue 10/3

13:00-08:54

2 stops38h 54m

Denver Intl

Fri 13/3

19:25-10:00

2 stops43h 35m

$2,018

AucklandDenver

AKL - DEN

AKLDEN

Auckland Intl

Sat 24/1

13:20-22:34

1 stop29h 14m

Denver Intl

Tue 27/1

19:23-09:55

1 stop18h 32m

$2,133

AucklandDenver

AKL - DEN

AKLDEN

Auckland Intl

Mon 26/1

19:35-22:15

1 stop22h 40m

Denver Intl

Mon 2/2

13:52-05:00

1 stop19h 08m

$2,234

AucklandDenver

AKL - DEN

AKLDEN

Auckland Intl

Sun 8/3

13:00-11:37

1 stop42h 37m

$1,100

AucklandDenver

AKL - DEN

AKLDEN

Auckland Intl

Mon 16/3

13:00-12:37

1 stop42h 37m

$1,100

AucklandDenver

AKL - DEN

AKLDEN

Auckland Intl

Tue 3/3

14:00-12:37

1 stop42h 37m

$1,100

AucklandDenver

AKL - DEN

AKLDEN

Auckland Intl

Sat 21/3

13:35-11:58

1 stop41h 23m

$1,129

AucklandDenver

AKL - DEN

AKLDEN

Auckland Intl

Sat 28/3

13:35-18:00

1 stop23h 25m

$1,129

Flights are sorted by cheapest return flights first.

Deals found on 11/12

Showing 1-10 of 14 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 5 December 2025.

To ensure you get the cheapest price possible for a flight to Boulder, you should look to book at least 5 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 18 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 $1,708
Qantas Airways
Qantas Airways
From $1,488
Air Canada
Air Canada
From $966
United Airlines
United Airlines
From $1,919

What are the cheapest airlines that fly to Boulder?

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

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 December 2025.
Read through reviews of airlines serving the United States, such as Air New Zealand, Qantas Airways, andUnited Airlines. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.
Air New Zealand
8.0
Very Good
552 reviews
Check prices

Overall

8.0

Crew

8.5

Food

7.4

Boarding

8.2

Comfort

8.0

Entertainment

7.5

Reviews

1 / 20
8.0
Excellent

Anonymous,Dec 2025

LAX - ORD

Overall good experience with united . I fly united most part so nothing out of obvious i guess
Air New Zealand
8.0
Very Good
552 reviews
Air New Zealand
8.0
Very Good
552 reviews
Check prices

Overall

8.0

Crew

8.5

Food

7.4

Boarding

8.2

Comfort

8.0

Entertainment

7.5

Reviews

1 / 20
8.0
Excellent

Anonymous,Dec 2025

LAX - ORD

Overall good experience with united . I fly united most part so nothing out of obvious i guess
Qantas Airways
7.5
Good
947 reviews
Air New Zealand
8.0
Very Good
552 reviews
Check prices

Overall

8.0

Crew

8.5

Food

7.4

Boarding

8.2

Comfort

8.0

Entertainment

7.5

Reviews

1 / 20
8.0
Excellent

Anonymous,Dec 2025

LAX - ORD

Overall good experience with united . I fly united most part so nothing out of obvious i guess
United Airlines
7.4
Good
9,094 reviews
Air New Zealand
8.0
Very Good
552 reviews
Check prices

Overall

8.0

Crew

8.5

Food

7.4

Boarding

8.2

Comfort

8.0

Entertainment

7.5

Reviews

1 / 20
8.0
Excellent

Anonymous,Dec 2025

LAX - ORD

Overall good experience with united . I fly united most part so nothing out of obvious i guess
Air Canada
7.1
Good
10,519 reviews
Air New Zealand
8.0
Very Good
552 reviews
Check prices

Overall

8.0

Crew

8.5

Food

7.4

Boarding

8.2

Comfort

8.0

Entertainment

7.5

Reviews

1 / 20
8.0
Excellent

Anonymous,Dec 2025

LAX - ORD

Overall good experience with united . I fly united most part so nothing out of obvious i guess

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.

  • How much is a return flight to Boulder?

    A return flight to Boulder will typically cost around $169, however they can be found for as little as $135.

  • 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 (18 hours 22 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

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