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$832+ 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 23/5. Fares are subject to change and may not be available on all flights or dates of travel.
— DEN
17 May — 24 May1
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 17 April 2026.

Sun 24/514:00
AKL
-
DEN
2 stops28h 38m
Multiple Airlines
Sun 7/607:00
DEN
-
AKL
2 stops46h 15m
Multiple Airlines
Deal found 14/4$1,668
Sun 31/507:00
AKL
-
DEN
2 stops35h 38m
Multiple Airlines
Sun 7/607:00
DEN
-
AKL
2 stops46h 15m
Multiple Airlines
Deal found 16/4$1,922
Sun 24/514:00
AKL
-
DEN
2 stops28h 38m
Multiple Airlines
Mon 8/607:00
DEN
-
AKL
2 stops46h 15m
Multiple Airlines
Deal found 15/4$1,958
Fri 5/614:00
AKL
-
DEN
2 stops28h 38m
Multiple Airlines
Fri 26/607:00
DEN
-
AKL
2 stops46h 15m
Multiple Airlines
Deal found 16/4$1,970
Thu 7/514:00
AKL
-
DEN
2 stops28h 38m
Multiple Airlines
Wed 1/707:25
DEN
-
AKL
2 stops45h 50m
Multiple Airlines
Deal found 13/4$1,983
Thu 14/514:00
AKL
-
DEN
2 stops24h 03m
Fiji Airways
Wed 27/511:31
DEN
-
AKL
2 stops41h 44m
Fiji Airways
Deal found 15/4$2,150
Thu 7/513:25
AKL
-
DEN
2 stops29h 13m
Multiple Airlines
Tue 30/607:25
DEN
-
AKL
2 stops36h 40m
Multiple Airlines
Deal found 14/4$2,165
Thu 28/506:15
AKL
-
DEN
2 stops29h 05m
Multiple Airlines
Thu 4/619:50
DEN
-
AKL
2 stops24h 20m
Multiple Airlines
Deal found 12/4$2,216

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 17 April 2026.

Return from

$1,668

One-way from

$832

Popular in

April

Cheapest in

May

Average price

$2,729
24/5-7/6
  • 24/5-7/6
  • 4 total stops
  • 74h 53m total
  • Auckland to Denver
Search Deals
23/5
  • 23/5
  • 2 total stops
  • 28h 38m total
  • Auckland to Boulder
Search Deals
Highest demand for flights based on searches. 1% potential increase in price ($28 potential increase over avg. return price).
Search Deals
Cheapest flight prices on average. 2% potential price decrease ($54 potential savings vs. average return price).
Search Deals
Average for return flights in April 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 17 April 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

Sun 24/5

15:35-17:37

2 stops20h 02m

Denver Intl

Tue 9/6

18:08-12:10

2 stops24h 02m

$2,361

AucklandDenver

AKL - DEN

AKLDEN

Auckland Intl

Thu 4/6

15:15-17:37

2 stops20h 22m

Denver Intl

Tue 16/6

18:08-12:10

2 stops24h 02m

$2,382

AucklandDenver

AKL - DEN

AKLDEN

Auckland Intl

Sat 23/5

14:00-19:36

2 stops23h 36m

Denver Intl

Mon 8/6

18:08-12:45

2 stops24h 37m

$2,468

AucklandDenver

AKL - DEN

AKLDEN

Auckland Intl

Wed 27/5

14:00-20:06

2 stops24h 06m

Denver Intl

Mon 15/6

22:29-06:00

1 stop37h 31m

$2,502
Fastest return journey

AucklandDenver

AKL - DEN

AKLDEN

Auckland Intl

Wed 27/5

19:50-20:14

1 stop18h 24m

Denver Intl

Mon 15/6

17:18-05:30

1 stop18h 12m

$2,526

AucklandDenver

AKL - DEN

AKLDEN

Auckland Intl

Thu 18/6

15:15-11:01

2 stops37h 46m

Denver Intl

Sun 12/7

18:12-12:10

2 stops23h 58m

$2,545

AucklandDenver

AKL - DEN

AKLDEN

Auckland Intl

Wed 27/5

08:20-17:20

2 stops27h 00m

Denver Intl

Mon 15/6

18:10-14:05

2 stops25h 55m

$2,553

AucklandDenver

AKL - DEN

AKLDEN

Auckland Intl

Thu 7/5

08:20-16:18

2 stops25h 58m

Denver Intl

Tue 30/6

12:55-14:05

3 stops31h 10m

$2,577

AucklandDenver

AKL - DEN

AKLDEN

Auckland Intl

Sat 6/6

20:15-08:22

1 stop30h 07m

Denver Intl

Wed 24/6

09:43-06:00

1 stop26h 17m

$2,599

AucklandDenver

AKL - DEN

AKLDEN

Auckland Intl

Sun 24/5

13:25-00:47

3 stops29h 22m

Denver Intl

Sun 7/6

18:10-16:50

2 stops28h 40m

$2,604

Flights are sorted by cheapest return flights first.

Deals found on 15/4

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 29 hours 13 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 $1,788
Qantas Airways
Qantas Airways
From $1,408
Air Canada
Air Canada
From $1,339
United Airlines
United Airlines
From $1,890

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 17 April 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
627 reviews
Check prices

Crew

8.5

Comfort

7.9

Food

7.4

Overall

8.0

Boarding

8.2

Entertainment

7.4

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
627 reviews
Air New Zealand
8.0
Very Good
627 reviews
Check prices

Crew

8.5

Comfort

7.9

Food

7.4

Overall

8.0

Boarding

8.2

Entertainment

7.4

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
1,019 reviews
Air New Zealand
8.0
Very Good
627 reviews
Check prices

Crew

8.5

Comfort

7.9

Food

7.4

Overall

8.0

Boarding

8.2

Entertainment

7.4

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
9,603 reviews
Air New Zealand
8.0
Very Good
627 reviews
Check prices

Crew

8.5

Comfort

7.9

Food

7.4

Overall

8.0

Boarding

8.2

Entertainment

7.4

Reviews

1 / 20
6.0
Good

Anonymous,Mar 2026

SIN - AKL

We were stuck on tarmac for an hour after boarding
Air Canada
7.1
Good
10,933 reviews
Air New Zealand
8.0
Very Good
627 reviews
Check prices

Crew

8.5

Comfort

7.9

Food

7.4

Overall

8.0

Boarding

8.2

Entertainment

7.4

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, Air Canada 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, Queenstown Intl offers the quickest one-way flight (23 hours 54 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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