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$707+ 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 14/4. Fares are subject to change and may not be available on all flights or dates of travel.
— DEN
10 Apr — 17 Apr1
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 11 March 2026.

Tue 22/1214:00
AKL
-
DEN
1 stop18h 37m
Air Canada
Fri 1/111:15
DEN
-
AKL
2 stops27h 45m
Air Canada
Deal found 7/3$1,566
Wed 5/819:50
AKL
-
DEN
1 stop22h 57m
Air New Zealand
Fri 14/816:20
DEN
-
AKL
1 stop19h 10m
Air New Zealand
Deal found 10/3$1,679
Fri 1/519:00
AKL
-
DEN
1 stop17h 16m
Multiple Airlines
Sun 10/507:00
DEN
-
AKL
1 stop29h 00m
Multiple Airlines
Deal found 9/3$1,732
Thu 29/1014:50
AKL
-
DEN
1 stop18h 42m
United Airlines
Mon 2/1117:52
DEN
-
AKL
1 stop19h 18m
United Airlines
Deal found 6/3$1,750
Mon 23/1113:20
AKL
-
DEN
2 stops23h 44m
American Airlines
Mon 30/1112:27
DEN
-
AKL
2 stops24h 58m
American Airlines
Deal found 9/3$1,752
Fri 1/520:15
AKL
-
DEN
1 stop34h 06m
Air New Zealand
Sun 10/517:25
DEN
-
AKL
1 stop18h 35m
Air New Zealand
Deal found 10/3$1,764
Fri 1/508:20
AKL
-
DEN
2 stops25h 58m
American Airlines
Sun 10/518:30
DEN
-
AKL
2 stops25h 35m
American Airlines
Deal found 10/3$1,779
Fri 1/520:15
AKL
-
DEN
2 stops21h 43m
United Airlines
Sun 10/506:00
DEN
-
AKL
1 stop30h 00m
United Airlines
Deal found 9/3$1,781

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 11 March 2026.

Return from

$1,679

One-way from

$707

Popular in

September

Cheapest in

February

Average price

$2,121
Air New Zealand
  • Air New Zealand
  • 5/8-14/8
  • 2 total stops
  • 42h 07m total
  • Auckland to Denver
Search Deals
14/4
  • 14/4
  • 2 total stops
  • 38h 47m total
  • Auckland to Boulder
Search Deals
Highest demand for flights based on searches. 0% potential increase in price.
Search Deals
Cheapest flight prices on average. 0% potential price decrease ($19 potential savings vs. average return price).
Search Deals
Average for return flights in March 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 11 March 2026.
Use the filters below to find and compare flights to Boulder that are best for you.

Fly from

Route

Departure

Return

Price

Cheapest return flight

AucklandDenver

AKL - DEN

AKLDEN

Auckland Intl

Fri 1/5

20:15-23:58

2 stops21h 43m

Denver Intl

Sun 10/5

06:00-06:00

1 stop30h 00m

$1,781

AucklandDenver

AKL - DEN

AKLDEN

Auckland Intl

Sat 25/4

08:20-16:18

2 stops25h 58m

Denver Intl

Sat 2/5

18:30-14:05

2 stops25h 35m

$1,819
Fastest return journey

AucklandDenver

AKL - DEN

AKLDEN

Auckland Intl

Fri 26/6

19:00-18:00

1 stop17h 00m

Denver Intl

Thu 2/7

16:20-05:30

1 stop19h 10m

$2,069

AucklandDenver

AKL - DEN

AKLDEN

Auckland Intl

Mon 20/4

13:50-23:59

2 stops28h 09m

Denver Intl

Mon 27/4

21:17-05:00

1 stop37h 43m

$2,132

AucklandDenver

AKL - DEN

AKLDEN

Auckland Intl

Sat 28/3

23:30-12:20

2 stops31h 50m

Denver Intl

Sat 11/4

19:24-21:20

2 stops55h 56m

$2,616

AucklandDenver

AKL - DEN

AKLDEN

Auckland Intl

Wed 1/7

20:15-22:15

1 stop20h 00m

Denver Intl

Wed 15/7

13:26-06:00

1 stop22h 34m

$2,822

AucklandDenver

AKL - DEN

AKLDEN

Auckland Intl

Sat 28/3

06:10-19:34

2 stops32h 24m

Denver Intl

Sat 11/4

18:30-14:10

2 stops25h 40m

$2,867

AucklandDenver

AKL - DEN

AKLDEN

Auckland Intl

Sat 28/3

13:35-18:00

1 stop23h 25m

Denver Intl

Sat 11/4

13:10-06:50

2 stops23h 40m

$2,894

AucklandDenver

AKL - DEN

AKLDEN

Auckland Intl

Wed 1/7

13:25-10:06

2 stops38h 41m

Denver Intl

Wed 15/7

13:30-06:00

1 stop22h 30m

$2,900
Cheapest one-way

AucklandDenver

AKL - DEN

AKLDEN

Auckland Intl

Wed 29/7

14:00-10:06

2 stops38h 06m

$876

Flights are sorted by cheapest return flights first.

Deals found on 8/3

Showing 1-10 of 17 resultsSorted by cheapest first
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

How long is the flight to Boulder?

On average, a flight from Auckland to Boulder takes 27 hours 24 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, Air Canada and Qantas Airways.

Air New Zealand
Air New Zealand
From $1,780
Air Canada
Air Canada
From $1,226
Qantas Airways
Qantas Airways
From $1,402
United Airlines
United Airlines
From $1,882

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 11 March 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
610 reviews
Check prices

Boarding

8.2

Comfort

8.0

Overall

8.0

Entertainment

7.4

Food

7.4

Crew

8.6

Reviews

1 / 20
10.0
Excellent

Marsha,Feb 2026

LAX - AKL

Air New Zealand is a great airline. Airline staff made us feel welcome and flight attendants were attentive and kind.
Air New Zealand
8.0
Very Good
610 reviews
Air New Zealand
8.0
Very Good
610 reviews
Check prices

Boarding

8.2

Comfort

8.0

Overall

8.0

Entertainment

7.4

Food

7.4

Crew

8.6

Reviews

1 / 20
10.0
Excellent

Marsha,Feb 2026

LAX - AKL

Air New Zealand is a great airline. Airline staff made us feel welcome and flight attendants were attentive and kind.
Qantas Airways
7.5
Good
1,004 reviews
Air New Zealand
8.0
Very Good
610 reviews
Check prices

Boarding

8.2

Comfort

8.0

Overall

8.0

Entertainment

7.4

Food

7.4

Crew

8.6

Reviews

1 / 20
10.0
Excellent

Marsha,Feb 2026

LAX - AKL

Air New Zealand is a great airline. Airline staff made us feel welcome and flight attendants were attentive and kind.
United Airlines
7.4
Good
9,415 reviews
Air New Zealand
8.0
Very Good
610 reviews
Check prices

Boarding

8.2

Comfort

8.0

Overall

8.0

Entertainment

7.4

Food

7.4

Crew

8.6

Reviews

1 / 20
10.0
Excellent

Marsha,Feb 2026

LAX - AKL

Air New Zealand is a great airline. Airline staff made us feel welcome and flight attendants were attentive and kind.
Air Canada
7.1
Good
10,800 reviews
Air New Zealand
8.0
Very Good
610 reviews
Check prices

Boarding

8.2

Comfort

8.0

Overall

8.0

Entertainment

7.4

Food

7.4

Crew

8.6

Reviews

1 / 20
10.0
Excellent

Marsha,Feb 2026

LAX - AKL

Air New Zealand is a great airline. Airline staff made us feel welcome and flight attendants were attentive and kind.

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 $166, however they can be found for as little as $132.

  • Where does the fastest flight to Boulder depart from?

    For those looking to save time traveling to Boulder, Gisborne offers the quickest one-way flight (23 hours 58 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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