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HK$4,795+ 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 12-8. Fares are subject to change and may not be available on all flights or dates of travel.
— DEN
15 Jun — 22 Jun1
1 adult

Flights to Boulder in 2025

Find the latest flights to Boulder in 2025, with up-to-date prices and availability. In the last 7 days, Cheapflights users made a total of 70,647 searches and data was last updated on 10 June 2025.

Return from

HK$7,871

One-way from

HK$4,795

Popular in

August

Cheapest in

February

Average price

HK$8,860
United Airlines
  • United Airlines
  • 14-7-21-7
  • 3 total stops
  • 38h 39m total
  • Hong Kong to Denver
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12-8
  • 12-8
  • 3 total stops
  • 35h 42m total
  • Hong Kong to Boulder
Search Deals
Highest demand for flights based on searches. 23% potential increase in price (HK$22,214 potential increase over avg. return price).
Search Deals
Cheapest flight prices on average. 5% potential price decrease (HK$4,091 potential savings vs. average return price).
Search Deals
Average for return flights in June 2025
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Find flight deals to Boulder

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 10 June 2025.

Mon 14-711:15HKG - DEN
1 stop17h 45mUnited Airlines
Mon 21-708:01DEN - HKG
2 stops20h 54mUnited Airlines
Deal found 9-6HK$7,871
Thu 10-718:00HKG - DEN
1 stop36h 40mAir Canada
Thu 17-711:35DEN - HKG
1 stop38h 30mAir Canada
Deal found 10-6HK$8,687
Mon 14-714:35HKG - DEN
2 stops20h 53mMultiple Airlines
Sun 20-719:25DEN - HKG
2 stops27h 05mMultiple Airlines
Deal found 9-6HK$8,844
Sun 13-700:30HKG - DEN
2 stops29h 55mAsiana Airlines
Mon 11-808:01DEN - HKG
2 stops37h 39mAsiana Airlines
Deal found 10-6HK$9,158
Thu 10-714:35HKG - DEN
2 stops22h 16mANA
Thu 17-708:02DEN - HKG
2 stops24h 43mANA
Deal found 10-6HK$9,449
Mon 11-822:30HKG - DEN
1 stop33h 25mTurkish Airlines
Tue 16-919:50DEN - HKG
1 stop31h 25mTurkish Airlines
Deal found 10-6HK$10,555
Sun 10-823:15HKG - DEN
1 stop31h 05mSWISS
Fri 19-917:50DEN - HKG
1 stop32h 50mSWISS
Deal found 10-6HK$11,214
Sat 12-701:25HKG - DEN
2 stops59h 34mQatar Airways
Wed 13-813:35DEN - HKG
2 stops42h 10mQatar Airways
Deal found 10-6HK$11,301
Sat 19-723:55HKG - DEN
2 stops51h 50mLufthansa
Sat 16-816:15DEN - HKG
2 stops33h 30mLufthansa
Deal found 10-6HK$11,881
Sat 12-700:05HKG - DEN
1 stop25h 05mCathay Pacific
Tue 12-817:06DEN - HKG
1 stop21h 29mCathay Pacific
Deal found 10-6HK$13,357
Sat 12-700:45HKG - DEN
2 stops35h 26mDelta
Sat 19-705:30DEN - HKG
2 stops27h 00mDelta
Deal found 9-6HK$13,459
Sat 19-718:20HKG - DEN
2 stops37h 17mPhilippine Airlines
Sun 10-806:00DEN - HKG
2 stops38h 10mPhilippine Airlines
Deal found 10-6HK$14,903

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 70,647 searches and data was last updated on 10 June 2025.
Use the filters below to find and compare flights to Boulder that are best for you.

Fly from

Hong Kong

Route

Departure

Return

Price

Hong KongDenver

HKG - DEN

HKGDEN

Hong Kong Intl

Mon 14-7

11:15-19:33

1 stop22h 18m

Denver Intl

Mon 21-7

20:57-05:40

1 stop18h 43m

HK$7,871

Hong KongDenver

HKG - DEN

HKGDEN

Hong Kong Intl

Thu 10-7

18:00-16:40

1 stop36h 40m

Denver Intl

Thu 17-7

11:35-16:05

1 stop38h 30m

HK$8,687

Hong KongDenver

HKG - DEN

HKGDEN

Hong Kong Intl

Mon 14-7

14:35-21:28

2 stops20h 53m

Denver Intl

Sun 20-7

19:25-12:30

2 stops27h 05m

HK$8,844

Hong KongDenver

HKG - DEN

HKGDEN

Hong Kong Intl

Sun 13-7

00:30-16:25

2 stops29h 55m

Denver Intl

Sun 10-8

08:01-11:40

2 stops37h 39m

HK$9,158

Hong KongDenver

HKG - DEN

HKGDEN

Hong Kong Intl

Thu 10-7

14:35-22:51

2 stops22h 16m

Denver Intl

Thu 17-7

08:02-22:45

2 stops24h 43m

HK$9,449

Hong KongDenver

HKG - DEN

HKGDEN

Hong Kong Intl

Mon 11-8

22:30-17:55

1 stop33h 25m

Denver Intl

Tue 16-9

19:50-17:15

1 stop31h 25m

HK$10,555

Hong KongDenver

HKG - DEN

HKGDEN

Hong Kong Intl

Sun 10-8

23:15-16:20

1 stop31h 05m

Denver Intl

Fri 19-9

17:50-16:40

1 stop32h 50m

HK$11,214

Hong KongDenver

HKG - DEN

HKGDEN

Hong Kong Intl

Sat 12-7

01:25-22:59

2 stops59h 34m

Denver Intl

Wed 13-8

13:35-21:45

2 stops42h 10m

HK$11,301

Hong KongDenver

HKG - DEN

HKGDEN

Hong Kong Intl

Sat 19-7

23:55-13:45

2 stops51h 50m

Denver Intl

Sat 16-8

16:15-15:45

2 stops33h 30m

HK$11,881

Hong KongDenver

HKG - DEN

HKGDEN

Hong Kong Intl

Sat 12-7

00:05-11:10

1 stop25h 05m

Denver Intl

Tue 12-8

17:06-04:35

1 stop21h 29m

HK$13,357

Flights are sorted by cheapest return flights first.

Deals found on 8-6

Showing 1-10 of 30 results
1
2
3

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 Hong Kong to Boulder takes 23 hours 46 minutes. Flights to Boulder from other popular cities in Hong Kong 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 airline flying from Hong Kong to Boulder is United Airlines.

United Airlines
United Airlines
From HK$831

What are the cheapest airlines that fly to Boulder?

The cheapest airline flying from Hong Kong to Boulder is 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 10 June 2025.
星宇航空
9.1
Wonderful
Check prices

Food

8.8

Comfort

9.0

Boarding

9.0

Overall

9.1

Crew

9.3

Entertainment

8.9

Reviews

1 / 7
10.0
Excellent

ltulagan,Jun 2025

TPE - SEA

The whole trip was very pleasant from the crew, the food, the amenities during the flight.
星宇航空
9.1
Wonderful
星宇航空
9.1
Wonderful
Check prices

Food

8.8

Comfort

9.0

Boarding

9.0

Overall

9.1

Crew

9.3

Entertainment

8.9

Reviews

1 / 7
10.0
Excellent

ltulagan,Jun 2025

TPE - SEA

The whole trip was very pleasant from the crew, the food, the amenities during the flight.
Japan Airlines
8.3
Very Good
1,489 reviews
星宇航空
9.1
Wonderful
Check prices

Food

8.8

Comfort

9.0

Boarding

9.0

Overall

9.1

Crew

9.3

Entertainment

8.9

Reviews

1 / 7
10.0
Excellent

ltulagan,Jun 2025

TPE - SEA

The whole trip was very pleasant from the crew, the food, the amenities during the flight.
ANA
8.3
Very Good
878 reviews
星宇航空
9.1
Wonderful
Check prices

Food

8.8

Comfort

9.0

Boarding

9.0

Overall

9.1

Crew

9.3

Entertainment

8.9

Reviews

1 / 7
10.0
Excellent

ltulagan,Jun 2025

TPE - SEA

The whole trip was very pleasant from the crew, the food, the amenities during the flight.
Asiana Airlines
8.2
Very Good
444 reviews
星宇航空
9.1
Wonderful
Check prices

Food

8.8

Comfort

9.0

Boarding

9.0

Overall

9.1

Crew

9.3

Entertainment

8.9

Reviews

1 / 7
10.0
Excellent

ltulagan,Jun 2025

TPE - SEA

The whole trip was very pleasant from the crew, the food, the amenities during the flight.
Emirates
8.1
Very Good
3,264 reviews
星宇航空
9.1
Wonderful
Check prices

Food

8.8

Comfort

9.0

Boarding

9.0

Overall

9.1

Crew

9.3

Entertainment

8.9

Reviews

1 / 7
10.0
Excellent

ltulagan,Jun 2025

TPE - SEA

The whole trip was very pleasant from the crew, the food, the amenities during the flight.

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, United Airlines 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 HK$1,141, however they can be found for as little as HK$108.

  • 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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