HK$3,058+ 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 18-3. Fares are subject to change and may not be available on all flights or dates of travel.
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 21 January 2025.
Find flight deals to Boulder
Cheapest flights to BoulderExplore the most affordable flight options available to Boulder. Find the lowest fares based on data from user searches, with prices last updated on 21 January 2025.
Explore the most affordable flight options available to Boulder. Find the lowest fares based on data from user searches, with prices last updated on 21 January 2025.
Find flights to Boulder within your budget
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 21 January 2025.
Fly from
Route
Departure
Return
Price
Hong KongDenver
HKG - DEN
HKGDEN
Hong Kong Intl
Thu 20-2
00:50-20:35
2 stops34h 45m
Denver Intl
Sun 9-3
22:37-22:40
2 stops58h 03m
Hong KongDenver
HKG - DEN
HKGDEN
Hong Kong Intl
Wed 19-2
10:30-14:54
1 stop19h 24m
Denver Intl
Sun 23-2
07:46-06:45
2 stops31h 59m
Hong KongDenver
HKG - DEN
HKGDEN
Hong Kong Intl
Fri 21-2
20:25-21:35
1 stop16h 10m
Denver Intl
Sun 9-3
07:40-17:40
1 stop20h 00m
Hong KongDenver
HKG - DEN
HKGDEN
Hong Kong Intl
Thu 20-3
12:35-23:14
2 stops24h 39m
Denver Intl
Sat 29-3
11:29-22:30
2 stops45h 01m
Hong KongDenver
HKG - DEN
HKGDEN
Hong Kong Intl
Sat 22-2
00:55-17:58
2 stops32h 03m
Denver Intl
Mon 3-3
06:50-23:10
2 stops25h 20m
Hong KongDenver
HKG - DEN
HKGDEN
Hong Kong Intl
Thu 20-3
23:20-18:40
1 stop33h 20m
Denver Intl
Sat 29-3
20:05-17:15
1 stop31h 10m
Hong KongDenver
HKG - DEN
HKGDEN
Hong Kong Intl
Thu 20-3
00:15-14:30
1 stop28h 15m
Denver Intl
Wed 26-3
18:45-16:40
1 stop31h 55m
Hong KongDenver
HKG - DEN
HKGDEN
Hong Kong Intl
Sat 22-2
00:25-19:12
1 stop33h 47m
Denver Intl
Sun 2-3
19:42-19:10
1 stop32h 28m
Hong KongDenver
HKG - DEN
HKGDEN
Hong Kong Intl
Sat 1-2
23:55-12:13
3 stops51h 18m
Denver Intl
Sat 15-2
13:40-18:05
4 stops37h 25m
Hong KongDenver
HKG - DEN
HKGDEN
Hong Kong Intl
Sat 22-2
00:35-19:40
2 stops34h 05m
Denver Intl
Mon 3-3
13:25-17:40
3 stops37h 15m
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.
Travel insights for flights to Boulder
Get recent, data-driven insights about flights to Boulder including ideal travel times, pricing trends, and more.
How long is the flight to Boulder?
On average, a flight from Hong Kong to Boulder takes 19 hours 24 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 airlines flying from Hong Kong to Boulder are United Airlines and Air Canada.
What are the cheapest airlines that fly to Boulder?
The cheapest airlines flying from Hong Kong to Boulder are United Airlines and Air Canada.
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 21 January 2025.
Food
Crew
Entertainment
Boarding
Comfort
Overall
Reviews
Issuing boarding pass takes too long. Either not enough people to help or the process is just way too slow or long. I tried many times to contact a representative on the phone, no one is available to take your call. Our last flight was cancelled and we were given another flight the next day and Starlux would not guarantee a free hotel accommodation to help my family.
Food
Crew
Entertainment
Boarding
Comfort
Overall
Reviews
Issuing boarding pass takes too long. Either not enough people to help or the process is just way too slow or long. I tried many times to contact a representative on the phone, no one is available to take your call. Our last flight was cancelled and we were given another flight the next day and Starlux would not guarantee a free hotel accommodation to help my family.
Food
Crew
Entertainment
Boarding
Comfort
Overall
Reviews
Issuing boarding pass takes too long. Either not enough people to help or the process is just way too slow or long. I tried many times to contact a representative on the phone, no one is available to take your call. Our last flight was cancelled and we were given another flight the next day and Starlux would not guarantee a free hotel accommodation to help my family.
Food
Crew
Entertainment
Boarding
Comfort
Overall
Reviews
Issuing boarding pass takes too long. Either not enough people to help or the process is just way too slow or long. I tried many times to contact a representative on the phone, no one is available to take your call. Our last flight was cancelled and we were given another flight the next day and Starlux would not guarantee a free hotel accommodation to help my family.
Food
Crew
Entertainment
Boarding
Comfort
Overall
Reviews
Issuing boarding pass takes too long. Either not enough people to help or the process is just way too slow or long. I tried many times to contact a representative on the phone, no one is available to take your call. Our last flight was cancelled and we were given another flight the next day and Starlux would not guarantee a free hotel accommodation to help my family.
Food
Crew
Entertainment
Boarding
Comfort
Overall
Reviews
Issuing boarding pass takes too long. Either not enough people to help or the process is just way too slow or long. I tried many times to contact a representative on the phone, no one is available to take your call. Our last flight was cancelled and we were given another flight the next day and Starlux would not guarantee a free hotel accommodation to help my family.
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