$828 Find Cheap Flights to Boulder

This is the cheapest one-way flight price found by a KAYAK user in the last 72 hours by searching for a flight to Boulder departing on 30/7. Fares are subject to change and may not be available on all flights or dates of travel. Click the price to replicate the search for this deal.
1 adult
1 adult, Economy

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Cheap Flights to Boulder

 
Here are some of the best deals found on KAYAK recently from the most popular airlines for return flights to Boulder that are departing in the next months. While these flights were available on KAYAK in the last 72 hours, prices and availability are subject to change and deals may expire.
Discover the best prices for you by selecting your travel dates on KAYAK.

Recent return flight deals to Boulder

Fri, 21 Nov - Wed, 3 Dec
Air Canada Logo
06:15 - 12:37AKL-DEN
26h 22m2 stops
Air Canada Logo
19:05 - 11:00DEN-AKL
19h 55m1 stop
$1,525Air Canada
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Mon, 27 Oct - Mon, 10 Nov
Air Canada Logo
07:00 - 12:37AKL-DEN
24h 37m2 stops
Air Canada Logo
19:05 - 19:00DEN-AKL
27h 55m2 stops
$1,527Air Canada
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Wed, 30 Jul - Wed, 6 Aug
 Logo
06:15 - 16:40AKL-DEN
28h 25m2 stops
 Logo
19:48 - 13:45DEN-AKL
23h 57m2 stops
$1,532
Find Deal
Sun, 17 Aug - Mon, 25 Aug
 Logo
19:45 - 00:48AKL-DEN
23h 03m1 stop
 Logo
09:45 - 12:40DEN-AKL
32h 55m2 stops
$1,632
Find Deal
Sat, 16 Aug - Sat, 23 Aug
Air New Zealand Logo
20:15 - 16:25AKL-DEN
38h 10m1 stop
Air New Zealand Logo
19:52 - 05:00DEN-AKL
39h 08m1 stop
$1,851Air New Zealand
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Sun, 17 Aug - Mon, 25 Aug
Qantas Airways Logo
06:00 - 15:51AKL-DEN
27h 51m2 stops
Qantas Airways Logo
17:06 - 14:05DEN-AKL
26h 59m2 stops
$1,910Qantas Airways
Find Deal
Sat, 16 Aug - Sat, 23 Aug
United Airlines Logo
13:50 - 15:00AKL-DEN
19h 10m1 stop
United Airlines Logo
19:52 - 05:00DEN-AKL
39h 08m1 stop
$1,911United Airlines
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Fri, 19 Sep - Thu, 25 Sep
Qantas Airways Logo
13:25 - 23:05AKL-DEN
27h 40m2 stops
Qantas Airways Logo
18:37 - 14:05DEN-AKL
25h 28m2 stops
$1,929Qantas Airways
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Wed, 30 Jul - Wed, 6 Aug
Air New Zealand Logo
19:40 - 22:29AKL-DEN
20h 49m1 stop
Air New Zealand Logo
17:59 - 06:00DEN-AKL
18h 01m1 stop
$2,025Air New Zealand
Find Deal
Fri, 15 Aug - Fri, 22 Aug
United Airlines Logo
19:40 - 12:52AKL-DEN
35h 12m1 stop
United Airlines Logo
11:40 - 06:00DEN-AKL
24h 20m1 stop
$2,115United Airlines
Find Deal
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Good to know – Book Cheap Boulder Plane Tickets

Low seasonApril
High seasonJune
Cheapest flight$828
Best time to beat the crowds but there is an average 7% increase in price.
Most popular time to fly and prices are also 0% lower on average.
Flight from Auckland to Denver

FAQs - booking Boulder flights

  • How to fly to Boulder?

    You cannot fly directly to Boulder. KAYAK recommends you fly to Denver Intl (DEN) (53.76 km from Boulder). From there you can rent a car or get a taxi.

  • What airports are near Boulder?

    The closest airport is Denver Intl (DEN) (53.76 km). KAYAK recommends you fly to Denver Intl.

  • How far is Denver Intl Airport from central Denver?

    The distance between Denver Intl Airport and the city centre of Denver is 30 km.

  • What is the name of Denver’s airport?

    There is only 1 airport in Denver, called Denver Intl Airport (DEN). It can also be referred to as Denver or Denver Intl.

  • How does KAYAK find such low prices on flights to Boulder?

    KAYAK is a travel search engine. That means we look across the web to find the best prices we can find for our users. With over 2 billion flight queries processed yearly, we are able to display a variety of prices and options on flights to Boulder.

  • How does KAYAK's flight Price Forecast tool help me choose the right time to buy my flight ticket to Boulder?

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to Boulder is likely to change within 7 days, so travellers know whether to wait or book now.

  • What is the Hacker Fare option on flights to Boulder?

    Hacker Fares allow you to combine one-way tickets in order to save you money over a traditional round-trip ticket. You could then fly to Boulder with an airline and back with another airline.

  • What is KAYAK's "flexible dates" feature and why should I care when looking for a flight to Boulder?

    Sometimes travel dates aren't set in stone. If your preferred travel dates have some wiggle room, flexible dates will show you all the options when flying to Boulder up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

Top tips for finding cheap flights to Boulder

  • There is no major airport in Boulder. It is instead served by Denver Intl Airport.
  • Enter your preferred departure airport and travel dates into the search form above to unlock the latest Boulder flight deals.

Reviews of the top 4 airlines flying to Boulder

 
Need help choosing which airline to fly with from New Zealand to Boulder? KAYAK airline reviews give an overall score for each airline based on loads of factors, including comfort, boarding, in-flight entertainment and more, to make your decision easier. See airline scores according to verified KAYAK customer reviews.
8.0
Air New ZealandOverall score based on 486 reviews
7.4Entertainment
7.3Food
8.2Boarding
8.5Crew
8.0Comfort
Airline reviews

Great! Flight was delayed by 30 mins but all was great. Thanks.

10.0 ExcellentAnonymous, Jun 2025AKL - BNE
Read more Air New Zealand reviews

Great! Flight was delayed by 30 mins but all was great. Thanks.

The 10hr flight was a comfortable as it could be in row 57. The food was just very bad….bland and soggy!

The business class upgrade meant a good sleep on the way home after a long week away. Excellent service, great food, and comfortable seat/bed for the journey.

I love the “boarding from the back” idea - it’s so much better than the “Zones” idea that many others use. Also, the inflight wifi was a first for me! Very nice to have on a 13-hour flight!

Again, Air New Zealand was great. They kept bathrooms clean, food was actually very good, New Zealand wines a big hit

The issue was with getting our boarding pases. There were issues with our arrangements that were made through Kayak. I am sorry to say that we will not use you again because of this. The flight itself was good and the flight attendants excellent.

Arriving at Coolangatta, rows 20 forward, took the airbridge across to the terminal. It was suggested to those from rows 21 back, that we take the rear stairs and to be careful crossing the tarmac. That was all well and good. However, when we got across to the terminal we then had to climb three large flights of stairs to meet up with those coming across the airbridge. No elevator! There were people carrying babies and elderly carrying hand luggage that needed assistance from others.. There was no option to turn back.

It was good for a short domestic flight. As no food ar entertainment provided, there should be a n/a rating available for those.

USB charging ports did not work on any of Air New Zealand flights

Economy was much nicer on the Air New Zealand planes.

Was bumped to a later flight because of inefficiency on part of the airline.

Delayed QF59 flight once again, Qantas doesn't fail in maintaining there delayed departures and arrivals. USB points do not work nor do the power point sockets on the plane, Qantas staff admitted that on the flight. Don't expect to your charge devices. Saving grace, was the ice cream. Bottom line, if you expect to fly to HND and make it on time avoid Qantas and if you're interested in ice cream - visit 7/11.

Their aircraft are old and amenities lack way behind other international carriers leaving from BNE. Even in economy

Overall good experience with flight and airport wheelchair staff. Also got Indian food in the flights

Friendly staff, surprisingly good premium economy seats allowing good sleep/ snooze opportunity and very good menu.

I liked the service, the menu, and the comfort of the seats! Even tho we were seated by the bathrooms, the reclining seats and movie selection was very good, my husband and I didn’t mind at all

I love flying with Qantas. There was no onscreen entertaining on this flight, and only a snack provided (not a meal) but still better than Jetstar or Virgin (in my opinion) so still happy.

Complaint is with American Airlines which delayed our flight from salt lake to Dallas reaulting in us missing our connection to Brisbane. Had to spend 24 hours in Dallas to wait for the next flight. Awful experience and ruined my wife’s birthday.

Wheelchair assistance to move through the terminals and to/from the plane door was excellent. No vegan snack on the flight, only something with salami and cheese in it.

The old Plane had not been cleaned properly in a long time.

Very rough getting into denver. my kid threw up it was so rough.

Why wasn't this flight departure scheduled eith another crew so that it could leave on time? When we arrived in Denver we had so little time between flights we had run to the connecting flight. We should received some credit for the inconvenience.

Efficient, calm when things were delayed and kept us regularly informed of what was happening.

I was supposed to be on business class at first class from Denver back to Miami due to weather changes. I missed my connection and it’s put on a flight to Fort Lauderdale. Instead of honoring my business class/1st class ticket, they put me in coach, but there were two first class seats open. I think it’s absolutely disgusting that I paid for first class $1300 ticket and they put me in economy and they had to open seats available and I have still not been refunded the difference. I ended up having to eat a snack box instead of the meal I was supposed to get and did not get home till 2 AM so I think that’s a little pathetic that I had to live off crackers for dinner And my poor dog ate some cheese and salami. Oh yes, apparently when they switched me to the new flight they forgot to mention I had a service dog

Excellent service despite turbulence during the flight. Flight attendants were remarkable!

Flight attendant moved my bag without notifying me and was rude to me when I asked him about it. There was no reason to move it.

The gate attendant let me walk right by her with a bag too big for the overhead compartment

Plane temperature was comfortable (not to hot) when boarding and waiting for takeoff.

Food choices were very limited. Taste of the dishes was average.

I liked all the informational texts. I always knew where to go and when .

Took off on-time and staff was very nice. Got stuck on tarmac at ATL due to storms, but staff was still wonderful even though they were working and not getting paid.

In a nutshell, my bag, the one I have to pay for, because now you can’t even bring a carry on, did not make it. I am still waiting for an update. The fact that not only were have to pay for it, but on top of that we are stuck without getting it, it’s ridiculous..

The plane was filthy!!!! There were empty food wrappers in the pockets and worst of all a wad of hair where someone had obviously brushed their hair, cleaned out the brush and left the wad of hair in the pocket. It was the most disgusting thing I’ve ever seen!! The seats are so crammed together with NO leg room. The AC vent controllers do not adjust. I will likely not book another AC flight from Florida to Montreal.

This was an excellent experience for a very short flight.

Registered my luggage at 5pm. Arrived at JFK at 1:00 am. Worst trip ever. Never again

Really good, super comfy flight and the stewardess was great.

Air Canada never runs on time. You’re lucky if your flight is not cancelled or diverted. Worst airline in the world for gas lighting its customers.

No space in overhead bin, one cookie, 2 oz of juice - is not customer service.

Good flight, friendly crew and overall - good service on United Airlines.

Received email saying that there won’t be a seat back entertainment screen and inflight WiFi would be available. But no WiFi both ways. Say it in the email.

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