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 $170, however they can be found for as little as $136.

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).

$770+ Cheap Flights to Boulder

Flights to Boulder in 2025

Return from	$1,946
One-way from	$770
Popular in	September
Cheapest in	March
Average price	$1,913

Alaska Airlines
11/12-28/12
4 total stops
62h 23m total
Auckland to Denver

Search Deals

11/1
2 total stops
24h 58m total
Auckland to Boulder

Search Deals

Highest demand for flights based on searches. 3% potential increase in price ($75 potential increase over avg. return price).

Search Deals

Cheapest flight prices on average. 1% potential price decrease ($21 potential savings vs. average return price).

Search Deals

Average for return flights in October 2025

Search Deals

Find flight deals to Boulder

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 28 October 2025.

Thu 11/1223:30AKL - DEN

2 stops32h 14mAlaska Airlines

Sun 28/1219:11DEN - AKL

2 stops30h 09mAlaska Airlines

Deal found 25/10$1,946

Wed 3/1214:00AKL - DEN

1 stop18h 37mAir Canada

Wed 10/1219:05DEN - AKL

1 stop19h 55mAir Canada

Deal found 26/10$1,990

Wed 3/1214:00AKL - DEN

1 stop23h 44mMultiple Airlines

Wed 10/1219:05DEN - AKL

2 stops33h 40mMultiple Airlines

Deal found 26/10$1,997

Thu 11/1209:00AKL - DEN

2 stops28h 44mAir Canada

Sun 28/1208:45DEN - AKL

1 stop30h 15mAir Canada

Deal found 25/10$2,129

Wed 26/1119:45AKL - DEN

1 stop18h 22mAir New Zealand

Mon 1/1206:00DEN - AKL

1 stop27h 00mAir New Zealand

Deal found 27/10$2,214

Wed 26/1106:00AKL - DEN

2 stops29h 46mQantas Airways

Mon 1/1212:26DEN - AKL

1 stop24h 44mQantas Airways

Deal found 27/10$2,219

Mon 27/1013:15AKL - DEN

3 stops27h 49mMultiple Airlines

Mon 10/1112:26DEN - AKL

2 stops27h 54mMultiple Airlines

Deal found 26/10$2,233

Sat 22/1114:35AKL - DEN

2 stops20h 24mDelta

Sun 30/1112:38DEN - AKL

1 stop23h 57mDelta

Deal found 27/10$2,240

Mon 27/1020:45AKL - DEN

2 stops32h 50mUnited Airlines

Mon 10/1111:15DEN - AKL

2 stops25h 55mUnited Airlines

Deal found 27/10$2,254

Thu 11/1215:50AKL - DEN

1 stop20h 04mQantas Airways

Sun 28/1216:55DEN - AKL

1 stop20h 15mQantas Airways

Deal found 25/10$2,295

Sat 22/1113:15AKL - DEN

3 stops31h 20mMultiple Airlines

Sun 30/1116:36DEN - AKL

2 stops25h 29mMultiple Airlines

Deal found 27/10$2,300

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 28 October 2025.

Wed 3/1214:00AKL - DEN

1 stop18h 37mAir Canada

Wed 10/1219:05DEN - AKL

1 stop19h 55mAir Canada

Deal found 26/10$1,990

Wed 3/1214:00AKL - DEN

1 stop23h 44mMultiple Airlines

Wed 10/1219:05DEN - AKL

2 stops33h 40mMultiple Airlines

Deal found 26/10$1,997

Fri 13/213:20AKL - DEN

1 stop30h 18mAmerican Airlines

Tue 17/219:42DEN - AKL

1 stop18h 23mAmerican Airlines

Deal found 25/10$2,129

Wed 26/1107:35AKL - DEN

2 stops28h 11mQantas Airways

Mon 1/1216:45DEN - AKL

2 stops25h 20mQantas Airways

Deal found 26/10$2,219

Sat 22/1114:35AKL - DEN

1 stop23h 58mDelta

Sun 30/1119:28DEN - AKL

1 stop17h 07mDelta

Deal found 27/10$2,240

Thu 11/1209:00AKL - DEN

2 stops28h 44mAir Canada

Sun 28/1208:45DEN - AKL

1 stop30h 15mAir Canada

Deal found 25/10$2,129

Last-minute flights to Boulder
Discover last-minute flight deals to Boulder. Data last updated 28 October 2025 and is based on user searches.

Mon 27/1016:35AKL - DEN

2 stops25h 54mQantas Airways

Mon 10/1116:45DEN - AKL

2 stops25h 55mQantas Airways

Deal found 26/10$2,233

Mon 27/1020:45AKL - DEN

2 stops32h 50mUnited Airlines

Mon 10/1111:15DEN - AKL

2 stops25h 55mUnited Airlines

Deal found 27/10$2,254

Mon 27/1013:15AKL - DEN

3 stops27h 49mMultiple Airlines

Mon 10/1114:19DEN - AKL

3 stops27h 46mMultiple Airlines

Deal found 26/10$2,424

Sat 22/1114:35AKL - DEN

1 stop23h 58mDelta

Sun 30/1119:28DEN - AKL

1 stop17h 07mDelta

Deal found 27/10$2,240

Sat 22/1113:15AKL - DEN

3 stops31h 20mMultiple Airlines

Sun 30/1116:36DEN - AKL

2 stops25h 29mMultiple Airlines

Deal found 27/10$2,300

Wed 26/1119:45AKL - DEN

1 stop18h 22mAir New Zealand

Mon 1/1206:00DEN - AKL

1 stop27h 00mAir New Zealand

Deal found 26/10$2,214

Wed 26/1106:10AKL - DEN

2 stops29h 55mQantas Airways

Mon 1/1216:45DEN - AKL

2 stops25h 20mQantas Airways

Deal found 27/10$2,219

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 28 October 2025.

Sun 11/114:50AKL - DEN

2 stops24h 58mMultiple Airlines

Deal found 27/10$770

Sun 2/1108:05AKL - DEN

2 stops24h 32mMultiple Airlines

Deal found 27/10$1,048

Mon 24/1119:35AKL - DEN

1 stop23h 17mAir New Zealand

Deal found 27/10$1,115

Mon 24/1113:15AKL - DEN

3 stops29h 05mMultiple Airlines

Deal found 26/10$1,121

Mon 24/1106:00AKL - DEN

2 stops29h 46mQantas Airways

Deal found 27/10$1,122

Sun 2/1120:10AKL - DEN

1 stop17h 48mAir New Zealand

Deal found 27/10$1,129

Sat 8/1114:35AKL - DEN

2 stops25h 01mDelta

Deal found 26/10$1,131

Sat 8/1113:15AKL - DEN

3 stops31h 20mMultiple Airlines

Deal found 27/10$1,150

Fly from

Route

Departure

Return

Price

AucklandDenver

AKL - DEN

AKLDEN

Auckland Intl

Wed 3/12

14:00-12:37

1 stop18h 37m

Denver Intl

Wed 10/12

19:05-11:00

1 stop19h 55m

$1,990

AucklandDenver

AKL - DEN

AKLDEN

Auckland Intl

Wed 3/12

14:00-17:44

1 stop23h 44m

Denver Intl

Wed 10/12

19:05-00:45

2 stops33h 40m

$1,997

AucklandDenver

AKL - DEN

AKLDEN

Auckland Intl

Fri 13/2

13:20-23:38

1 stop30h 18m

Denver Intl

Tue 17/2

19:42-10:05

1 stop18h 23m

$2,129

AucklandDenver

AKL - DEN

AKLDEN

Auckland Intl

Thu 11/12

09:00-17:44

2 stops28h 44m

Denver Intl

Sun 28/12

08:45-11:00

1 stop30h 15m

$2,129

AucklandDenver

AKL - DEN

AKLDEN

Auckland Intl

Wed 26/11

07:35-15:46

2 stops28h 11m

Denver Intl

Mon 1/12

16:45-14:05

2 stops25h 20m

$2,219

AucklandDenver

AKL - DEN

AKLDEN

Auckland Intl

Sat 22/11

14:35-18:33

1 stop23h 58m

Denver Intl

Sun 30/11

19:28-08:35

1 stop17h 07m

$2,240

AucklandDenver

AKL - DEN

AKLDEN

Auckland Intl

Sun 11/1

14:50-19:48

2 stops24h 58m

$770

AucklandDenver

AKL - DEN

AKLDEN

Auckland Intl

Sun 2/11

08:05-13:37

2 stops24h 32m

$1,048

AucklandDenver

AKL - DEN

AKLDEN

Auckland Intl

Mon 24/11

19:35-22:52

1 stop23h 17m

$1,115

AucklandDenver

AKL - DEN

AKLDEN

Auckland Intl

Mon 24/11

07:35-15:46

2 stops28h 11m

$1,121

Flights are sorted by cheapest return flights first.

Deals found on 27/10

Showing 1-10 of 11 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 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?

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

519 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

519 reviews

Air New Zealand

8.0

Very Good

519 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

924 reviews

Air New Zealand

8.0

Very Good

519 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

8,996 reviews

Air New Zealand

8.0

Very Good

519 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

10,370 reviews

Air New Zealand

8.0

Very Good

519 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 $170, however they can be found for as little as $136.
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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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.

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$770+ 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 11/1. 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 28 October 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 28 October 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 28 October 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 24 October 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 28 October 2025.