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$619+ 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
22 Feb — 1 Mar1
1 adult
1 adult, Economy, 0 bags

Flights to Boulder in 2026

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 23 January 2026.

Sat 7/308:00
AKL
-
DEN
2 stops36h 30m
Multiple Airlines
Sat 14/309:00
DEN
-
AKL
2 stops33h 35m
Multiple Airlines
Deal found 21/1$1,459
Thu 29/107:00
AKL
-
DEN
2 stops30h 44m
Air Canada
Fri 30/121:05
DEN
-
AKL
2 stops41h 55m
Air Canada
Deal found 22/1$1,551
Mon 20/406:10
AKL
-
DEN
2 stops24h 23m
Air Canada
Thu 30/419:05
DEN
-
AKL
2 stops27h 50m
Air Canada
Deal found 21/1$1,961
Thu 29/122:00
AKL
-
DEN
1 stop28h 28m
United Airlines
Fri 30/113:52
DEN
-
AKL
1 stop19h 08m
United Airlines
Deal found 22/1$2,008
Sat 7/320:10
AKL
-
DEN
1 stop22h 20m
Air New Zealand
Sat 14/321:12
DEN
-
AKL
1 stop36h 48m
Air New Zealand
Deal found 21/1$2,075
Thu 19/213:20
AKL
-
DEN
1 stop29h 20m
American Airlines
Mon 23/220:04
DEN
-
AKL
1 stop17h 51m
American Airlines
Deal found 20/1$2,086
Mon 20/419:50
AKL
-
DEN
1 stop20h 25m
Air New Zealand
Thu 30/417:25
DEN
-
AKL
1 stop18h 35m
Air New Zealand
Deal found 21/1$2,188

Find flight deals to Boulder

Find the latest flights to Boulder in 2026, 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 23 January 2026.

Return from

$1,459

One-way from

$619

Popular in

April

Cheapest in

October

Average price

$1,772
7/3-14/3
  • 7/3-14/3
  • 4 total stops
  • 70h 05m total
  • Auckland to Denver
Search Deals
15/4
  • 15/4
  • 2 total stops
  • 30h 49m total
  • Auckland to Boulder
Search Deals
Highest demand for flights based on searches. 2% potential increase in price ($43 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 January 2026
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 23 January 2026.
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

Sat 7/3

08:00-00:30

2 stops36h 30m

Denver Intl

Sat 14/3

09:00-13:35

2 stops33h 35m

$1,459

AucklandDenver

AKL - DEN

AKLDEN

Auckland Intl

Sat 7/3

20:10-22:30

1 stop22h 20m

Denver Intl

Sat 14/3

21:12-05:00

1 stop36h 48m

$2,075

AucklandDenver

AKL - DEN

AKLDEN

Auckland Intl

Thu 19/2

13:20-22:40

1 stop29h 20m

Denver Intl

Mon 23/2

20:04-09:55

1 stop17h 51m

$2,086

AucklandDenver

AKL - DEN

AKLDEN

Auckland Intl

Mon 20/4

19:50-22:15

1 stop20h 25m

Denver Intl

Thu 30/4

17:25-06:00

1 stop18h 35m

$2,188

AucklandDenver

AKL - DEN

AKLDEN

Auckland Intl

Wed 15/4

07:00-19:49

2 stops30h 49m

$619

AucklandDenver

AKL - DEN

AKLDEN

Auckland Intl

Thu 9/4

14:00-00:31

2 stops28h 31m

$752

AucklandDenver

AKL - DEN

AKLDEN

Auckland Intl

Sun 8/2

14:00-17:44

1 stop23h 44m

$784

AucklandDenver

AKL - DEN

AKLDEN

Auckland Intl

Thu 29/1

08:05-12:26

2 stops24h 21m

$784

AucklandDenver

AKL - DEN

AKLDEN

Auckland Intl

Thu 29/1

15:50-08:39

1 stop36h 49m

$1,059

AucklandDenver

AKL - DEN

AKLDEN

Auckland Intl

Wed 15/4

20:15-19:40

1 stop17h 25m

$1,104

Flights are sorted by cheapest return flights first.

Deals found on 22/1

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 16 January 2026.

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 27 hours 19 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.

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 $1,748
Qantas Airways
Qantas Airways
From $1,412
Air Canada
Air Canada
From $954
United Airlines
United Airlines
From $1,896

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 23 January 2026.
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
573 reviews
Check prices

Overall

8.0

Crew

8.5

Food

7.4

Boarding

8.2

Entertainment

7.4

Comfort

8.0

Reviews

1 / 20
8.0
Excellent

David,Jan 2026

AKL - IAH

Couple of spare seats on this flight so people could spread a little. Much better than a full plane
Air New Zealand
8.0
Very Good
573 reviews
Air New Zealand
8.0
Very Good
573 reviews
Check prices

Overall

8.0

Crew

8.5

Food

7.4

Boarding

8.2

Entertainment

7.4

Comfort

8.0

Reviews

1 / 20
8.0
Excellent

David,Jan 2026

AKL - IAH

Couple of spare seats on this flight so people could spread a little. Much better than a full plane
Qantas Airways
7.5
Good
974 reviews
Air New Zealand
8.0
Very Good
573 reviews
Check prices

Overall

8.0

Crew

8.5

Food

7.4

Boarding

8.2

Entertainment

7.4

Comfort

8.0

Reviews

1 / 20
8.0
Excellent

David,Jan 2026

AKL - IAH

Couple of spare seats on this flight so people could spread a little. Much better than a full plane
United Airlines
7.4
Good
9,195 reviews
Air New Zealand
8.0
Very Good
573 reviews
Check prices

Overall

8.0

Crew

8.5

Food

7.4

Boarding

8.2

Entertainment

7.4

Comfort

8.0

Reviews

1 / 20
8.0
Excellent

David,Jan 2026

AKL - IAH

Couple of spare seats on this flight so people could spread a little. Much better than a full plane
Air Canada
7.1
Good
10,648 reviews
Air New Zealand
8.0
Very Good
573 reviews
Check prices

Overall

8.0

Crew

8.5

Food

7.4

Boarding

8.2

Entertainment

7.4

Comfort

8.0

Reviews

1 / 20
8.0
Excellent

David,Jan 2026

AKL - IAH

Couple of spare seats on this flight so people could spread a little. Much better than a full plane

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 $167, however they can be found for as little as $133.

  • 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 (19 hours 55 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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