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 $98, however they can be found for as little as $78.

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 (20 hours 1 minute).

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).

$795+ Cheap Flights to Boulder

Flights to Boulder in 2025

Return from	$1,640
One-way from	$828
Popular in	July
Cheapest in	March
Average price	$2,067

American Airlines
26/11-1/12
3 total stops
61h 41m total
Auckland to Denver

Search Deals

1/11
1 total stop
17h 40m total
Auckland to Boulder

Search Deals

Highest demand for flights based on searches. 9% potential increase in price ($345 potential increase over avg. return price).

Search Deals

Cheapest flight prices on average. 1% potential price decrease ($36 potential savings vs. average return price).

Search Deals

Average for return flights in September 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 12 September 2025.

Wed 26/1113:20AKL - DEN

1 stop28h 44mAmerican Airlines

Mon 1/1205:28DEN - AKL

2 stops32h 57mAmerican Airlines

Deal found 9/9$1,640

Sat 11/1006:10AKL - DEN

2 stops29h 42mMultiple Airlines

Sat 18/1010:45DEN - AKL

2 stops32h 20mMultiple Airlines

Deal found 11/9$1,743

Sat 22/1113:20AKL - DEN

1 stop18h 10mAmerican Airlines

Sun 30/1105:28DEN - AKL

2 stops32h 57mAmerican Airlines

Deal found 10/9$1,796

Wed 26/1120:10AKL - DEN

1 stop17h 48mAir New Zealand

Mon 1/1206:00DEN - AKL

1 stop28h 05mAir New Zealand

Deal found 10/9$1,827

Mon 13/1020:15AKL - DEN

1 stop23h 37mMultiple Airlines

Sat 18/1010:45DEN - AKL

1 stop24h 15mMultiple Airlines

Deal found 11/9$1,833

Mon 27/1014:50AKL - DEN

1 stop20h 53mUnited Airlines

Mon 10/1106:00DEN - AKL

1 stop27h 00mUnited Airlines

Deal found 9/9$1,842

Wed 26/1114:35AKL - DEN

1 stop23h 58mDelta

Mon 1/1219:28DEN - AKL

1 stop17h 07mDelta

Deal found 9/9$1,843

Mon 27/1007:35AKL - DEN

2 stops27h 18mQantas Airways

Mon 10/1114:49DEN - AKL

2 stops27h 16mQantas Airways

Deal found 11/9$1,847

Mon 27/1013:15AKL - DEN

3 stops29h 26mMultiple Airlines

Mon 10/1116:45DEN - AKL

2 stops25h 20mMultiple Airlines

Deal found 10/9$1,848

Best flights to Boulder
Discover carefully curated flight deals to Boulder that have cost, travel time, and stopovers in mind to ensure you get the best travel experience. Data last updated 12 September 2025.

Wed 26/1113:20AKL - DEN

1 stop28h 44mAmerican Airlines

Mon 1/1205:28DEN - AKL

2 stops32h 57mAmerican Airlines

Deal found 9/9$1,640

Mon 27/1014:50AKL - DEN

2 stops27h 25mUnited Airlines

Mon 10/1119:05DEN - AKL

1 stop18h 05mUnited Airlines

Deal found 9/9$1,842

Mon 27/1007:35AKL - DEN

2 stops27h 18mQantas Airways

Mon 10/1114:49DEN - AKL

2 stops27h 16mQantas Airways

Deal found 9/9$1,842

Sat 22/1114:35AKL - DEN

1 stop17h 08mDelta

Sun 30/1119:28DEN - AKL

1 stop17h 07mDelta

Deal found 9/9$1,843

Sat 22/1113:20AKL - DEN

1 stop18h 10mAmerican Airlines

Sun 30/1105:28DEN - AKL

2 stops32h 57mAmerican Airlines

Deal found 10/9$1,796

Wed 26/1114:35AKL - DEN

1 stop23h 58mDelta

Mon 1/1219:28DEN - AKL

1 stop17h 07mDelta

Deal found 9/9$1,843

Wed 26/1119:55AKL - DEN

1 stop24h 35mUnited Airlines

Mon 1/1217:55DEN - AKL

1 stop19h 15mUnited Airlines

Deal found 9/9$1,843

Last-minute flights to Boulder
Discover last-minute flight deals to Boulder. Data last updated 12 September 2025 and is based on user searches.

Wed 8/1020:15AKL - DEN

1 stop17h 04mAir New Zealand

Sat 18/1021:28DEN - AKL

1 stop37h 32mAir New Zealand

Deal found 11/9$1,906

Wed 8/1020:15AKL - DEN

1 stop33h 03mMultiple Airlines

Tue 21/1022:55DEN - AKL

2 stops43h 45mMultiple Airlines

Deal found 11/9$1,939

Sat 11/1006:10AKL - DEN

2 stops29h 42mMultiple Airlines

Sat 18/1010:45DEN - AKL

2 stops32h 20mMultiple Airlines

Deal found 11/9$1,743

Sat 11/1020:15AKL - DEN

1 stop17h 04mAir New Zealand

Sat 18/1020:34DEN - AKL

1 stop37h 56mAir New Zealand

Deal found 11/9$1,914

Sat 11/1014:50AKL - DEN

1 stop16h 25mAir New Zealand

Sun 19/1010:14DEN - AKL

1 stop23h 46mAir New Zealand

Deal found 11/9$1,937

Mon 13/1020:15AKL - DEN

1 stop23h 37mMultiple Airlines

Sat 18/1010:45DEN - AKL

1 stop24h 15mMultiple Airlines

Deal found 11/9$1,833

Mon 13/1020:15AKL - DEN

1 stop23h 37mMultiple Airlines

Tue 21/1022:55DEN - AKL

2 stops43h 45mMultiple Airlines

Deal found 11/9$1,926

Mon 27/1014:50AKL - DEN

1 stop20h 53mUnited Airlines

Mon 10/1106:00DEN - AKL

1 stop27h 00mUnited Airlines

Deal found 9/9$1,842

Mon 27/1013:15AKL - DEN

3 stops29h 26mMultiple Airlines

Mon 10/1116:45DEN - AKL

2 stops25h 20mMultiple Airlines

Deal found 10/9$1,848

One-way flights to Boulder
Search for one-way flight options to Boulder. Find affordable one-way fares based on user searches. Data last updated 12 September 2025.

Wed 25/207:00AKL - DEN

2 stops30h 44mAir Canada

Deal found 10/9$795

Thu 26/219:55AKL - DEN

1 stop24h 04mAir Canada

Deal found 10/9$812

Sat 1/1119:35AKL - DEN

1 stop17h 40mMultiple Airlines

Deal found 9/9$828

Wed 25/215:00AKL - DEN

3 stops27h 39mMultiple Airlines

Deal found 10/9$902

Thu 26/223:30AKL - DEN

3 stops30h 22mMultiple Airlines

Deal found 10/9$912

Mon 24/1113:20AKL - DEN

1 stop24h 32mAmerican Airlines

Deal found 10/9$931

Mon 24/1114:35AKL - DEN

2 stops28h 47mDelta

Deal found 9/9$933

Mon 24/1113:15AKL - DEN

3 stops31h 15mMultiple Airlines

Deal found 9/9$1,128

Fly from

Route

Departure

Return

Price

AucklandDenver

AKL - DEN

AKLDEN

Auckland Intl

Wed 26/11

13:20-22:04

1 stop28h 44m

Denver Intl

Mon 1/12

05:28-10:25

2 stops32h 57m

$1,640

AucklandDenver

AKL - DEN

AKLDEN

Auckland Intl

Sat 22/11

13:20-11:30

1 stop18h 10m

Denver Intl

Sun 30/11

05:28-10:25

2 stops32h 57m

$1,796

AucklandDenver

AKL - DEN

AKLDEN

Auckland Intl

Mon 27/10

14:50-23:15

2 stops27h 25m

Denver Intl

Mon 10/11

19:05-09:10

1 stop18h 05m

$1,842

AucklandDenver

AKL - DEN

AKLDEN

Auckland Intl

Mon 27/10

07:35-15:53

2 stops27h 18m

Denver Intl

Mon 10/11

14:49-14:05

2 stops27h 16m

$1,842

AucklandDenver

AKL - DEN

AKLDEN

Auckland Intl

Sat 22/11

14:35-11:43

1 stop17h 08m

Denver Intl

Sun 30/11

19:28-08:35

1 stop17h 07m

$1,843

AucklandDenver

AKL - DEN

AKLDEN

Auckland Intl

Wed 26/11

14:35-18:33

1 stop23h 58m

Denver Intl

Mon 1/12

19:28-08:35

1 stop17h 07m

$1,843

AucklandDenver

AKL - DEN

AKLDEN

Auckland Intl

Wed 26/11

19:55-00:30

1 stop24h 35m

Denver Intl

Mon 1/12

17:55-09:10

1 stop19h 15m

$1,843

AucklandDenver

AKL - DEN

AKLDEN

Auckland Intl

Thu 26/2

06:15-12:37

2 stops26h 22m

$795

AucklandDenver

AKL - DEN

AKLDEN

Auckland Intl

Sat 1/11

19:35-18:15

1 stop17h 40m

$828

AucklandDenver

AKL - DEN

AKLDEN

Auckland Intl

Wed 25/2

15:00-22:39

3 stops27h 39m

$902

Flights are sorted by cheapest return flights first.

Deals found on 10/9

Showing 1-10 of 14 results

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?

To ensure you get the cheapest price possible for a flight to Boulder, you should look to book at least 56 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 20 hours 1 minute. 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?

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.

What are the cheapest airlines that fly to Boulder?

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

Rainfall in Boulder 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

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

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

505 reviews

Check prices

Reviews

1 / 20

6.0

Good

Anonymous,Jul 2025

AKL - SFO

Flight was delayed an hour. We had just flown Air NZ on a 12- hour flight from AKL so the extra delay on this connecting flight wasn’t welcomed.

Air New Zealand

8.0

Very Good

505 reviews

Air New Zealand

8.0

Very Good

505 reviews

Check prices

Reviews

1 / 20

6.0

Good

Anonymous,Jul 2025

AKL - SFO

Flight was delayed an hour. We had just flown Air NZ on a 12- hour flight from AKL so the extra delay on this connecting flight wasn’t welcomed.

Qantas Airways

7.5

Good

905 reviews

Air New Zealand

8.0

Very Good

505 reviews

Check prices

Reviews

1 / 20

6.0

Good

Anonymous,Jul 2025

AKL - SFO

Flight was delayed an hour. We had just flown Air NZ on a 12- hour flight from AKL so the extra delay on this connecting flight wasn’t welcomed.

United Airlines

7.4

Good

8,937 reviews

Air New Zealand

8.0

Very Good

505 reviews

Check prices

Reviews

1 / 20

6.0

Good

Anonymous,Jul 2025

AKL - SFO

Flight was delayed an hour. We had just flown Air NZ on a 12- hour flight from AKL so the extra delay on this connecting flight wasn’t welcomed.

Air Canada

7.1

Good

10,000 reviews

Air New Zealand

8.0

Very Good

505 reviews

Check prices

Reviews

1 / 20

6.0

Good

Anonymous,Jul 2025

AKL - SFO

Flight was delayed an hour. We had just flown Air NZ on a 12- hour flight from AKL so the extra delay on this connecting flight wasn’t welcomed.

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 $98, however they can be found for as little as $78.
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 (20 hours 1 minute).
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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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?

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$795+ 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 25/2. Fares are subject to change and may not be available on all flights or dates of travel.

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 12 September 2025.

Return from

One-way from

Popular in

Cheapest in

Average price

Find flight deals to Boulder

Cheapest flights to BoulderExplore the most affordable flight options available to Boulder. Find the lowest fares based on data from user searches, with prices last updated on 12 September 2025.

Explore the most affordable flight options available to Boulder. Find the lowest fares based on data from user searches, with prices last updated on 12 September 2025.

Cheapflights Fare Finder

Use the filters below to find and compare flights to Boulder that are best for you.

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.

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 29 August 2025.

How long is the flight to Boulder?

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.

What are the most popular airlines that fly to Boulder?

What are the cheapest airlines that fly to Boulder?

Rainfall in Boulder by month

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

Temperature in Boulder by month

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

Reviews of airlines servicing Boulder

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.

FAQs about flying to Boulder

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

What is the best airline to fly to Boulder?

How much is a return flight to Boulder?

Where does the fastest flight to Boulder depart from?

Does Denver Intl have rental cars?

Are there hotels close to Denver Intl?

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.

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?

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

Can Cheapflights find flights to Boulder with no change fees?

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

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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 12 September 2025.