Find flights
Airlines

RM 2,300+ 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 17/5. Fares are subject to change and may not be available on all flights or dates of travel.
— DEN
18 May — 25 May1
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 18 April 2026.

Sat 19/914:15
KUL
-
DEN
2 stops43h 51m
United Airlines
Sat 26/919:45
DEN
-
KUL
2 stops44h 15m
United Airlines
Deal found 15/4RM 4,912
Tue 12/519:40
KUL
-
DEN
2 stops41h 19m
Qatar Airways
Wed 20/506:00
DEN
-
KUL
2 stops43h 45m
Qatar Airways
Deal found 13/4RM 5,054
Sun 3/502:00
KUL
-
DEN
2 stops35h 04m
Qatar Airways
Wed 13/509:00
DEN
-
KUL
2 stops33h 35m
Qatar Airways
Deal found 12/4RM 5,058
Fri 15/519:40
KUL
-
DEN
2 stops42h 19m
Qatar Airways
Wed 20/506:00
DEN
-
KUL
2 stops36h 35m
Qatar Airways
Deal found 13/4RM 5,149
Fri 8/519:40
KUL
-
DEN
2 stops40h 09m
Qatar Airways
Mon 11/508:00
DEN
-
KUL
2 stops34h 35m
Qatar Airways
Deal found 12/4RM 5,153
Sun 3/519:40
KUL
-
DEN
2 stops41h 24m
Qatar Airways
Wed 13/506:00
DEN
-
KUL
2 stops36h 35m
Qatar Airways
Deal found 12/4RM 5,157
Tue 27/1017:50
KUL
-
DEN
2 stops32h 47m
Air Canada
Sat 31/1008:05
DEN
-
KUL
2 stops38h 30m
Air Canada
Deal found 13/4RM 5,181
Fri 15/502:00
KUL
-
DEN
2 stops35h 59m
Qatar Airways
Wed 20/506:00
DEN
-
KUL
2 stops43h 45m
Qatar Airways
Deal found 13/4RM 5,248
Fri 8/502:00
KUL
-
DEN
2 stops33h 49m
Qatar Airways
Wed 13/506:00
DEN
-
KUL
2 stops36h 35m
Qatar Airways
Deal found 12/4RM 5,252
Tue 5/502:00
KUL
-
DEN
2 stops34h 59m
Multiple Airlines
Tue 12/523:59
DEN
-
KUL
2 stops42h 36m
Multiple Airlines
Deal found 12/4RM 5,327

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 407,431 searches and data was last updated on 18 April 2026.

Return from

RM 4,912

One-way from

RM 2,300

Popular in

July

Cheapest in

September

Average price

RM 4,880
United Airlines
  • United Airlines
  • 19/9-26/9
  • 4 total stops
  • 88h 06m total
  • Kuala Lumpur to Denver
Search Deals
17/5
  • 17/5
  • 2 total stops
  • 32h 44m total
  • Kuala Lumpur to Boulder
Search Deals
Highest demand for flights based on searches. 7% potential increase in price (RM 391 potential increase over avg. return price).
Search Deals
Cheapest flight prices on average. 3% potential price decrease (RM 152 potential savings vs. average return price).
Search Deals
Average for return flights in April 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 407,431 searches and data was last updated on 18 April 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

Kuala LumpurDenver

KUL - DEN

KULDEN

Kuala Lumpur Intl

Thu 7/5

02:00-22:59

2 stops34h 59m

Denver Intl

Wed 13/5

12:20-08:35

2 stops30h 15m

RM 5,058

Kuala LumpurDenver

KUL - DEN

KULDEN

Kuala Lumpur Intl

Mon 4/5

02:00-23:04

2 stops35h 04m

Denver Intl

Wed 13/5

06:00-15:45

2 stops43h 45m

RM 5,058

Kuala LumpurDenver

KUL - DEN

KULDEN

Kuala Lumpur Intl

Mon 3/8

07:15-00:47

2 stops31h 32m

Denver Intl

Sun 13/9

06:00-00:05

2 stops28h 05m

RM 5,864

Kuala LumpurDenver

KUL - DEN

KULDEN

Kuala Lumpur Intl

Thu 6/8

07:15-22:15

2 stops29h 00m

Denver Intl

Sun 13/9

06:00-00:05

2 stops28h 05m

RM 6,050

Kuala LumpurDenver

KUL - DEN

KULDEN

Kuala Lumpur Intl

Sat 9/5

09:50-18:25

1 stop46h 35m

Denver Intl

Thu 14/5

20:25-07:20

1 stop44h 55m

RM 7,445
Fastest return journey

Kuala LumpurDenver

KUL - DEN

KULDEN

Kuala Lumpur Intl

Sat 30/5

07:15-12:10

1 stop18h 55m

Denver Intl

Sat 6/6

11:24-06:00

2 stops28h 36m

RM 8,302

Kuala LumpurDenver

KUL - DEN

KULDEN

Kuala Lumpur Intl

Fri 31/7

09:50-18:25

1 stop46h 35m

Denver Intl

Sat 12/9

06:00-05:20

2 stops33h 20m

RM 8,350

Kuala LumpurDenver

KUL - DEN

KULDEN

Kuala Lumpur Intl

Fri 31/7

09:50-18:25

1 stop46h 35m

Denver Intl

Sun 13/9

06:00-17:15

2 stops45h 15m

RM 8,812

Kuala LumpurDenver

KUL - DEN

KULDEN

Kuala Lumpur Intl

Wed 5/8

09:50-18:25

1 stop46h 35m

Denver Intl

Sun 13/9

20:25-08:10

1 stop45h 45m

RM 8,895

Kuala LumpurDenver

KUL - DEN

KULDEN

Kuala Lumpur Intl

Sat 30/5

05:30-18:25

1 stop26h 55m

Denver Intl

Sat 6/6

20:25-17:15

1 stop30h 50m

RM 9,124

Flights are sorted by cheapest return flights first.

Deals found on 14/4

Showing 1-10 of 22 resultsSorted by cheapest first
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 Kuala Lumpur to Boulder takes 30 hours 23 minutes. Flights to Boulder from other popular cities in Malaysia 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 Kuala Lumpur to Boulder are United Airlines, ANA and Air Canada.

United Airlines
United Airlines
From RM 3,522
ANA
ANA
From RM 4,232
Air Canada
Air Canada
From RM 4,278

What are the cheapest airlines that fly to Boulder?

The cheapest airlines flying from Kuala Lumpur to Boulder are United Airlines, ANA 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 18 April 2026.
Get a feel of what it's like to fly with ANA,United Airlines, andAir Canada to the United States by reading reviews from past customers. Users have also rated airlines in terms of entertainment options, comfort, food, crew/service, and boarding process.
ANA
8.4
Very Good
1,179 reviews
Check prices

Food

7.8

Boarding

8.6

Comfort

8.2

Entertainment

8.0

Crew

8.7

Overall

8.4

Reviews

1 / 20
8.0
Excellent

Alejandro,Apr 2026

SFO - HND

Food was good, not exceptional. On my second flight, Tokyo to Hiroshima, a single cup of coffee was offered, not a bag of pretzels or cookies. Granted, the flight was only an hour and a half, but this seems stingy.
ANA
8.4
Very Good
1,179 reviews
ANA
8.4
Very Good
1,179 reviews
Check prices

Food

7.8

Boarding

8.6

Comfort

8.2

Entertainment

8.0

Crew

8.7

Overall

8.4

Reviews

1 / 20
8.0
Excellent

Alejandro,Apr 2026

SFO - HND

Food was good, not exceptional. On my second flight, Tokyo to Hiroshima, a single cup of coffee was offered, not a bag of pretzels or cookies. Granted, the flight was only an hour and a half, but this seems stingy.
United Airlines
7.4
Good
9,603 reviews
ANA
8.4
Very Good
1,179 reviews
Check prices

Food

7.8

Boarding

8.6

Comfort

8.2

Entertainment

8.0

Crew

8.7

Overall

8.4

Reviews

1 / 20
8.0
Excellent

Alejandro,Apr 2026

SFO - HND

Food was good, not exceptional. On my second flight, Tokyo to Hiroshima, a single cup of coffee was offered, not a bag of pretzels or cookies. Granted, the flight was only an hour and a half, but this seems stingy.
Air Canada
7.1
Good
10,935 reviews
ANA
8.4
Very Good
1,179 reviews
Check prices

Food

7.8

Boarding

8.6

Comfort

8.2

Entertainment

8.0

Crew

8.7

Overall

8.4

Reviews

1 / 20
8.0
Excellent

Alejandro,Apr 2026

SFO - HND

Food was good, not exceptional. On my second flight, Tokyo to Hiroshima, a single cup of coffee was offered, not a bag of pretzels or cookies. Granted, the flight was only an hour and a half, but this seems stingy.

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 RM 5,401, however they can be found for as little as RM 5,388.

  • 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

Browse thousands of different options on Cheapflights for your next trip

Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.

Search flights to Boulder by cabin class

Find flights to Boulder, based on your preferred cabin class, be it economy, premium economy, business, or first class.
First class flights to Boulder
Business class flights to Boulder
Prem Economy class flights to Boulder
Economy class flights to Boulder

Fly with Cheapflights

Find the best flight deals on Cheapflights, where travellers can enjoy low prices and a wide availability of flights to their desired destinations.

How does Cheapflights help users find flights to Boulder?

When you search for this flight to Boulder, Cheapflights searches on 900+ travel sites to save you time finding great flight deals online. Additionally, we offer filter features so you can choose a preferred cabin class or airline, see different price ranges, and much more so you can book the best flight for you.

Why should you use Cheapflights to find cheap flight tickets to Boulder?

Cheapflights taps into our reliable network of hundreds of airlines and travel agencies to find the best deals for flights to Boulder for you. Better yet — we are completely free to use.

Can Cheapflights find flights to Boulder with no change fees?

Yes! Cheapflights helps users easily find flights to Boulder with no change fees.

Can Cheapflights notify me if prices for flights to Boulder become cheaper?

Yes, Cheapflights has a feature called Price Alerts, which notifies users when flight prices change. Track prices for your flight to Boulder today and book when you’re ready!

100% Free

Cheapflights is completely free to use, so you can start saving the moment you arrive.

Book With Flexibility

Our users can plan ahead with confidence and find flights with no change fees.

Travel Smart

Millions of people come to us for their flight needs every year. We help make travel planning easy by providing useful insights and data-driven graphs that can inform your decisions.