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HK$3,506+ 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 3-5. Fares are subject to change and may not be available on all flights or dates of travel.
— DEN
12 abr. — 19 abr.1
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 13 marzo 2026.

jue. 23-411:45
HKG
-
DEN
1 stop27h 00m
United Airlines
jue. 30-407:40
DEN
-
HKG
2 stops31h 20m
United Airlines
Deal found 9-3HK$4,750
mié. 22-411:45
HKG
-
DEN
1 stop20h 40m
United Airlines
dom. 26-416:00
DEN
-
HKG
1 stop36h 30m
United Airlines
Deal found 8-3HK$4,860
jue. 30-411:45
HKG
-
DEN
1 stop27h 14m
United Airlines
jue. 7-506:00
DEN
-
HKG
1 stop22h 30m
United Airlines
Deal found 9-3HK$5,236
vie. 1-511:45
HKG
-
DEN
1 stop18h 44m
United Airlines
vie. 8-515:44
DEN
-
HKG
1 stop23h 56m
United Airlines
Deal found 10-3HK$5,603
mié. 22-409:45
HKG
-
DEN
2 stops38h 33m
Air Canada
dom. 26-419:16
DEN
-
HKG
2 stops43h 59m
Air Canada
Deal found 8-3HK$6,057
mar. 7-422:30
HKG
-
DEN
1 stop24h 10m
United Airlines
dom. 12-421:17
DEN
-
HKG
1 stop31h 13m
United Airlines
Deal found 10-3HK$6,206

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 70,647 searches and data was last updated on 13 marzo 2026.

Return from

HK$4,750

One-way from

HK$3,506

Popular in

January

Cheapest in

November

Average price

HK$7,803
United Airlines
  • United Airlines
  • 23-4-30-4
  • 3 total stops
  • 58h 20m total
  • Hong Kong to Denver
Search Deals
3-5
  • 3-5
  • 2 total stops
  • 41h 19m total
  • Hong Kong to Boulder
Search Deals
Highest demand for flights based on searches. 9% potential increase in price (HK$762 potential increase over avg. return price).
Search Deals
Cheapest flight prices on average. 3% potential price decrease (HK$238 potential savings vs. average return price).
Search Deals
Average for return flights in March 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 70,647 searches and data was last updated on 13 marzo 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

Hong KongDenver

HKG - DEN

HKGDEN

Hong Kong Intl

sáb. 2-5

11:45-18:20

1 stop20h 35m

Denver Intl

jue. 7-5

07:40-05:00

2 stops31h 20m

HK$4,750

Hong KongDenver

HKG - DEN

HKGDEN

Hong Kong Intl

mié. 22-4

11:45-18:25

1 stop20h 40m

Denver Intl

dom. 26-4

16:00-18:30

1 stop36h 30m

HK$4,860
Fastest return journey

Hong KongDenver

HKG - DEN

HKGDEN

Hong Kong Intl

vie. 1-5

11:45-15:43

1 stop17h 58m

Denver Intl

vie. 8-5

15:44-05:00

2 stops23h 16m

HK$5,643

Hong KongDenver

HKG - DEN

HKGDEN

Hong Kong Intl

mar. 7-4

22:30-08:40

1 stop24h 10m

Denver Intl

dom. 12-4

21:17-18:30

1 stop31h 13m

HK$6,206

Hong KongDenver

HKG - DEN

HKGDEN

Hong Kong Intl

sáb. 2-5

09:45-20:28

2 stops24h 43m

Denver Intl

jue. 7-5

09:40-05:15

2 stops29h 35m

HK$6,472

Hong KongDenver

HKG - DEN

HKGDEN

Hong Kong Intl

mié. 22-4

09:45-10:18

2 stops38h 33m

Denver Intl

dom. 26-4

11:10-05:15

2 stops28h 05m

HK$7,419

Hong KongDenver

HKG - DEN

HKGDEN

Hong Kong Intl

jue. 28-5

13:30-22:50

2 stops23h 20m

Denver Intl

lun. 8-6

21:10-08:50

2 stops21h 40m

HK$8,405

Hong KongDenver

HKG - DEN

HKGDEN

Hong Kong Intl

mar. 21-4

00:45-17:55

2 stops31h 10m

Denver Intl

dom. 26-4

07:25-22:45

2 stops25h 20m

HK$8,609

Hong KongDenver

HKG - DEN

HKGDEN

Hong Kong Intl

mar. 7-4

09:45-08:36

2 stops36h 51m

Denver Intl

dom. 12-4

11:10-05:15

2 stops52h 05m

HK$9,751
Cheapest one-way

Hong KongDenver

HKG - DEN

HKGDEN

Hong Kong Intl

dom. 21-6

20:10-11:59

2 stops29h 49m

HK$3,592

Flights are sorted by cheapest return flights first.

Deals found on 10-3

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 Hong Kong to Boulder takes 18 hours 44 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$4,874

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 13 marzo 2026.
Check out reviews from past customers who have flown United Airlines to the United States to help guide your decision. You can also see how each airline stacks up in terms of entertainment options, comfort, food, crew/service, and boarding process.
United Airlines
7.4
Good
9,418 reviews
Check prices

Comfort

7.3

Boarding

7.7

Entertainment

7.1

Crew

8.1

Food

6.6

Overall

7.4

Reviews

1 / 20
6.0
Good

Gerry,Jan 2026

YVR - DEN

Seats were uncomfortable. Second leg of my flight on United had much more comfortable seats
United Airlines
7.4
Good
9,418 reviews
United Airlines
7.4
Good
9,418 reviews
Check prices

Comfort

7.3

Boarding

7.7

Entertainment

7.1

Crew

8.1

Food

6.6

Overall

7.4

Reviews

1 / 20
6.0
Good

Gerry,Jan 2026

YVR - DEN

Seats were uncomfortable. Second leg of my flight on United had much more comfortable seats

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$1,542, however they can be found for as little as HK$412.

  • 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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