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$809+ 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 3/11. Fares are subject to change and may not be available on all flights or dates of travel.
— DEN
12 Jul — 19 Jul1
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 12 June 2026.

Thu 5/1120:20
AKL
-
DEN
1 stop24h 05m
Multiple Airlines
Thu 12/1109:40
DEN
-
AKL
1 stop24h 10m
Multiple Airlines
Deal found 11/6$1,903
Mon 23/1120:20
AKL
-
DEN
1 stop21h 41m
Air New Zealand
Mon 30/1121:25
DEN
-
AKL
1 stop36h 25m
Air New Zealand
Deal found 11/6$1,945
Mon 23/1113:20
AKL
-
DEN
2 stops25h 02m
American Airlines
Mon 30/1114:22
DEN
-
AKL
2 stops23h 03m
American Airlines
Deal found 11/6$1,962
Thu 5/1115:50
AKL
-
DEN
1 stop22h 28m
Air New Zealand
Thu 12/1115:58
DEN
-
AKL
2 stops29h 47m
Air New Zealand
Deal found 11/6$1,974
Thu 5/1108:20
AKL
-
DEN
2 stops23h 53m
American Airlines
Thu 12/1116:45
DEN
-
AKL
2 stops25h 55m
American Airlines
Deal found 11/6$2,010
Wed 5/820:15
AKL
-
DEN
1 stop31h 48m
Multiple Airlines
Thu 24/909:15
DEN
-
AKL
2 stops34h 05m
Multiple Airlines
Deal found 9/6$2,272
Mon 23/1119:50
AKL
-
DEN
1 stop23h 37m
United Airlines
Mon 30/1111:15
DEN
-
AKL
2 stops25h 55m
United Airlines
Deal found 10/6$2,379
Fri 7/819:50
AKL
-
DEN
1 stop18h 24m
Air New Zealand
Fri 4/917:45
DEN
-
AKL
1 stop18h 15m
Air New Zealand
Deal found 9/6$2,483
Fri 24/720:15
AKL
-
DEN
1 stop20h 00m
Air New Zealand
Fri 31/717:18
DEN
-
AKL
1 stop18h 12m
Air New Zealand
Deal found 9/6$2,484
Fri 7/820:15
AKL
-
DEN
1 stop31h 48m
Multiple Airlines
Fri 4/909:47
DEN
-
AKL
2 stops32h 58m
Multiple Airlines
Deal found 9/6$2,495
Wed 5/819:50
AKL
-
DEN
1 stop18h 24m
Air New Zealand
Thu 24/917:40
DEN
-
AKL
1 stop18h 20m
Air New Zealand
Deal found 9/6$2,498

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 12 June 2026.

Return from

$1,903

One-way from

$809

Popular in

June

Cheapest in

February

Average price

$2,655
5/11-12/11
  • 5/11-12/11
  • 2 total stops
  • 48h 15m total
  • Auckland to Denver
Search Deals
3/11
  • 3/11
  • 2 total stops
  • 23h 22m total
  • Auckland to Boulder
Search Deals
Highest demand for flights based on searches. 5% potential increase in price ($119 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 June 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 12 June 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

Thu 5/11

20:20-00:25

1 stop24h 05m

Denver Intl

Thu 12/11

09:40-05:50

1 stop24h 10m

$1,903

AucklandDenver

AKL - DEN

AKLDEN

Auckland Intl

Mon 23/11

20:20-22:01

1 stop21h 41m

Denver Intl

Mon 30/11

21:25-05:50

1 stop36h 25m

$1,945

AucklandDenver

AKL - DEN

AKLDEN

Auckland Intl

Wed 5/8

20:15-10:03

1 stop31h 48m

Denver Intl

Thu 24/9

09:15-13:20

2 stops34h 05m

$2,272

AucklandDenver

AKL - DEN

AKLDEN

Auckland Intl

Mon 23/11

19:50-23:27

1 stop23h 37m

Denver Intl

Mon 30/11

11:15-09:10

2 stops25h 55m

$2,379
Fastest return journey

AucklandDenver

AKL - DEN

AKLDEN

Auckland Intl

Mon 23/11

13:20-15:46

1 stop22h 26m

Denver Intl

Mon 30/11

16:36-09:25

1 stop20h 49m

$2,579

AucklandDenver

AKL - DEN

AKLDEN

Auckland Intl

Mon 23/11

08:20-15:15

3 stops26h 55m

Denver Intl

Mon 30/11

16:36-14:40

2 stops26h 04m

$2,581

AucklandDenver

AKL - DEN

AKLDEN

Auckland Intl

Fri 24/7

19:00-22:15

1 stop21h 15m

Denver Intl

Fri 31/7

11:45-06:00

1 stop24h 15m

$2,667

AucklandDenver

AKL - DEN

AKLDEN

Auckland Intl

Thu 25/6

13:50-00:47

1 stop28h 57m

Denver Intl

Thu 23/7

19:43-05:00

1 stop39h 17m

$2,669
Cheapest one-way
Fastest single journey

AucklandDenver

AKL - DEN

AKLDEN

Auckland Intl

Tue 3/11

14:50-18:12

2 stops23h 22m

$809

AucklandDenver

AKL - DEN

AKLDEN

Auckland Intl

Tue 8/9

20:15-09:40

1 stop31h 25m

$900

Flights are sorted by cheapest return flights first.

Deals found on 11/6

Showing 1-10 of 16 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 20 hours 0 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 United Airlines.

Air New Zealand
Air New Zealand
From $1,882
Qantas Airways
Qantas Airways
From $1,432
United Airlines
United Airlines
From $1,936

What are the cheapest airlines that fly to Boulder?

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

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 12 June 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
645 reviews
Check prices

Overall

8.0

Crew

8.5

Entertainment

7.4

Boarding

8.2

Food

7.4

Comfort

7.9

Reviews

1 / 20
6.0
Good

Anonymous,Mar 2026

SIN - AKL

We were stuck on tarmac for an hour after boarding
Air New Zealand
8.0
Very Good
645 reviews
Air New Zealand
8.0
Very Good
645 reviews
Check prices

Overall

8.0

Crew

8.5

Entertainment

7.4

Boarding

8.2

Food

7.4

Comfort

7.9

Reviews

1 / 20
6.0
Good

Anonymous,Mar 2026

SIN - AKL

We were stuck on tarmac for an hour after boarding
Qantas Airways
7.5
Good
1,046 reviews
Air New Zealand
8.0
Very Good
645 reviews
Check prices

Overall

8.0

Crew

8.5

Entertainment

7.4

Boarding

8.2

Food

7.4

Comfort

7.9

Reviews

1 / 20
6.0
Good

Anonymous,Mar 2026

SIN - AKL

We were stuck on tarmac for an hour after boarding
United Airlines
7.4
Good
9,813 reviews
Air New Zealand
8.0
Very Good
645 reviews
Check prices

Overall

8.0

Crew

8.5

Entertainment

7.4

Boarding

8.2

Food

7.4

Comfort

7.9

Reviews

1 / 20
6.0
Good

Anonymous,Mar 2026

SIN - AKL

We were stuck on tarmac for an hour after boarding

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, Qantas Airways is rated the highest out of the airlines that fly to Boulder.

  • 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 0 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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