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$1,037+ 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 13/9. Fares are subject to change and may not be available on all flights or dates of travel.
— DEN
26 Aug — 2 Sep1
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 27 July 2026.

Sun 25/1007:30
AKL
-
DEN
2 stops27h 02m
American Airlines
Sat 7/1118:46
DEN
-
AKL
2 stops42h 39m
American Airlines
Deal found 23/7$1,795
Mon 14/913:50
AKL
-
DEN
1 stop24h 17m
Air New Zealand
Tue 22/907:45
DEN
-
AKL
1 stop28h 15m
Air New Zealand
Deal found 23/7$1,893
Mon 14/920:15
AKL
-
DEN
1 stop31h 25m
Multiple Airlines
Tue 22/907:30
DEN
-
AKL
2 stops36h 35m
Multiple Airlines
Deal found 23/7$1,919
Wed 26/807:00
AKL
-
DEN
2 stops34h 57m
Multiple Airlines
Wed 2/907:00
DEN
-
AKL
2 stops46h 15m
Multiple Airlines
Deal found 26/7$1,934
Mon 23/1120:20
AKL
-
DEN
1 stop21h 02m
United Airlines
Mon 30/1106:00
DEN
-
AKL
1 stop27h 00m
United Airlines
Deal found 23/7$1,971
Fri 18/920:15
AKL
-
DEN
1 stop18h 58m
United Airlines
Sun 27/905:00
DEN
-
AKL
1 stop30h 00m
United Airlines
Deal found 24/7$1,998
Sun 25/1019:55
AKL
-
DEN
1 stop24h 04m
United Airlines
Sat 7/1121:18
DEN
-
AKL
1 stop36h 27m
United Airlines
Deal found 23/7$2,000
Mon 23/1114:35
AKL
-
DEN
2 stops20h 34m
Delta
Mon 30/1112:45
DEN
-
AKL
2 stops23h 30m
Delta
Deal found 23/7$2,057
Sun 4/1016:35
AKL
-
DEN
2 stops35h 57m
Multiple Airlines
Wed 21/1012:17
DEN
-
AKL
2 stops30h 48m
Multiple Airlines
Deal found 27/7$2,081

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 27 July 2026.

Return from

$1,795

One-way from

$1,037

Popular in

July

Cheapest in

February

Average price

$2,847
American Airlines
  • American Airlines
  • 25/10-7/11
  • 4 total stops
  • 69h 41m total
  • Auckland to Denver
Search Deals
United Airlines
  • United Airlines
  • 13/9
  • 1 total stop
  • 20h 03m total
  • Auckland to Boulder
Search Deals
Highest demand for flights based on searches. 8% potential increase in price ($207 potential increase over avg. return price).
Search Deals
Cheapest flight prices on average. 1% potential price decrease ($45 potential savings vs. average return price).
Search Deals
Average for return flights in July 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 27 July 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

Mon 14/9

20:15-09:40

1 stop31h 25m

Denver Intl

Tue 22/9

07:30-14:05

2 stops36h 35m

$1,919

AucklandDenver

AKL - DEN

AKLDEN

Auckland Intl

Mon 23/11

15:50-20:00

1 stop24h 10m

Denver Intl

Mon 30/11

15:41-09:10

1 stop21h 29m

$1,977

AucklandDenver

AKL - DEN

AKLDEN

Auckland Intl

Mon 23/11

06:40-11:45

2 stops25h 05m

Denver Intl

Mon 30/11

16:23-14:50

2 stops26h 27m

$1,977

AucklandDenver

AKL - DEN

AKLDEN

Auckland Intl

Sun 25/10

19:55-23:34

1 stop22h 39m

Denver Intl

Sat 7/11

21:10-05:45

1 stop36h 35m

$2,009

AucklandDenver

AKL - DEN

AKLDEN

Auckland Intl

Wed 9/9

13:25-22:41

2 stops27h 16m

Denver Intl

Wed 16/9

15:13-12:15

2 stops27h 02m

$2,576

AucklandDenver

AKL - DEN

AKLDEN

Auckland Intl

Wed 9/9

08:20-17:42

2 stops27h 22m

Denver Intl

Wed 16/9

14:27-14:10

3 stops29h 43m

$2,576

AucklandDenver

AKL - DEN

AKLDEN

Auckland Intl

Mon 23/11

07:30-16:36

3 stops29h 06m

Denver Intl

Mon 30/11

16:23-17:55

2 stops29h 32m

$2,578

AucklandDenver

AKL - DEN

AKLDEN

Auckland Intl

Tue 8/9

13:25-21:42

3 stops26h 17m

Denver Intl

Tue 15/9

15:50-14:05

3 stops28h 15m

$2,583
Fastest return journey

AucklandDenver

AKL - DEN

AKLDEN

Auckland Intl

Tue 8/9

20:15-22:18

1 stop20h 03m

Denver Intl

Tue 15/9

17:49-07:10

1 stop19h 21m

$2,597

AucklandDenver

AKL - DEN

AKLDEN

Auckland Intl

Thu 26/11

14:35-19:36

2 stops25h 01m

Denver Intl

Sat 23/1

19:15-08:15

1 stop17h 00m

$2,602

Flights are sorted by cheapest return flights first.

Deals found on 22/7

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 17 hours 38 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 $2,209
Qantas Airways
Qantas Airways
From $1,264
United Airlines
United Airlines
From $1,938

What are the cheapest airlines that fly to Boulder?

The cheapest airlines flying from Auckland to Boulder are Qantas Airways, United Airlines 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 27 July 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
655 reviews
Check prices

Food

7.5

Comfort

8.0

Crew

8.5

Entertainment

7.4

Boarding

8.2

Overall

8.0

Reviews

1 / 20
2.0
Mediocre

Viren,Jun 2026

MEL - LAX

Flight got delayed and made us take a transit visa which was not a told before hand.
Air New Zealand
8.0
Very Good
655 reviews
Air New Zealand
8.0
Very Good
655 reviews
Check prices

Food

7.5

Comfort

8.0

Crew

8.5

Entertainment

7.4

Boarding

8.2

Overall

8.0

Reviews

1 / 20
2.0
Mediocre

Viren,Jun 2026

MEL - LAX

Flight got delayed and made us take a transit visa which was not a told before hand.
Qantas Airways
7.5
Good
1,067 reviews
Air New Zealand
8.0
Very Good
655 reviews
Check prices

Food

7.5

Comfort

8.0

Crew

8.5

Entertainment

7.4

Boarding

8.2

Overall

8.0

Reviews

1 / 20
2.0
Mediocre

Viren,Jun 2026

MEL - LAX

Flight got delayed and made us take a transit visa which was not a told before hand.
United Airlines
7.4
Good
10,043 reviews
Air New Zealand
8.0
Very Good
655 reviews
Check prices

Food

7.5

Comfort

8.0

Crew

8.5

Entertainment

7.4

Boarding

8.2

Overall

8.0

Reviews

1 / 20
2.0
Mediocre

Viren,Jun 2026

MEL - LAX

Flight got delayed and made us take a transit visa which was not a told before hand.

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.

  • How much is a return flight to Boulder?

    A return flight to Boulder will typically cost around $311, however they can be found for as little as $311.

  • 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 (17 hours 38 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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