$68+ Cheap flights from Los Angeles (LAX) to Boulder, CO
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 5/7. Fares are subject to change and may not be available on all flights or dates of travel.
Find cheap flights from Los Angeles to Boulder with Cheapflights
1. Tell us where you want to go
Enter your travel information like dates, passengers, trip type (one-way or round trip), and preferred cabin class then click “Find deals”2. Select your favorite providers
We find the providers serving your travel needs. Choose up to four travel providers to compare side-by-side for flights, hotels, or car rentals.3. Compare prices and book
Review each provider’s pricing and select the best option for you! Book through your favorite provider’s website for a seamless experience.Cheapflights Tip: The best prices from Los Angeles to Boulder are usually found in January or September, booked 31 days in advance, depart on a Saturday or Wednesday and return on a Friday
Cheap flight deals from Los Angeles to Boulder
Keep the following information in mind while searching for Los Angeles to Boulder flight deals. Data was last updated April 15, 2025.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | eDreams 3 stars |
Round-trip from | $135 (Cheapflightsfares) |
One-way from | $68 (Cheapflightsfares) |
Popular in | December |
Cheapest in | January |
Average price | $187 |
Find flight deals from Los Angeles to Boulder
Cheapest flights from Los Angeles to BoulderExplore the most affordable flight options available from Los Angeles to Boulder. Find the lowest fares from popular airlines and budget airlines, with prices last updated on April 15, 2025.
Explore the most affordable flight options available from Los Angeles to Boulder. Find the lowest fares from popular airlines and budget airlines, with prices last updated on April 15, 2025.
This Cheapflightsfares deal was found by Cheapflights users on 4/14. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
This Delta deal was found by Cheapflights users on 4/14. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
This Southwest deal was found by Cheapflights users on 4/14. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
This United Airlines deal was found by Cheapflights users on 4/13. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
This Expedia deal was found by Cheapflights users on 4/14. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
This American Airlines deal was found by Cheapflights users on 4/15. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
This Hawaiian Airlines deal was found by Cheapflights users on 4/14. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Hawaiian Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
This Alaska Airlines deal was found by Cheapflights users on 4/14. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
This Cheapflightsfares deal was found by Cheapflights users on 4/14. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
This JetBlue Airways deal was found by Cheapflights users on 4/15. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure JetBlue Airways is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Cheapflights Fare Finder
Customize your flight search to find flights from Los Angeles to Boulder that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated April 15, 2025.
Use the filters below to find and compare flights from Los Angeles to Boulder that are best for you.
Fly from
Fly to
Route
Depart
Return
Price
Los AngelesDenver
LAX - DEN
LAXDEN
Los Angeles
Wed 4/30
1:38 pm-5:13 pm
Nonstop2h 35m
Denver Intl
Wed 5/7
10:53 pm-12:30 am
Nonstop2h 37m
Los AngelesDenver
LAX - DEN
LAXDEN
Los Angeles
Fri 5/16
8:30 pm-11:54 pm
Nonstop2h 24m
Denver Intl
Mon 5/19
6:40 am-8:13 am
Nonstop2h 33m
Los AngelesDenver
LAX - DEN
LAXDEN
Los Angeles
Sat 5/10
5:20 am-8:45 am
Nonstop2h 25m
Denver Intl
Fri 5/16
9:55 pm-11:25 pm
Nonstop2h 30m
Los AngelesDenver
LAX - DEN
LAXDEN
Los Angeles
Thu 5/22
5:05 am-8:24 am
Nonstop2h 19m
Denver Intl
Tue 5/27
7:25 pm-8:58 pm
Nonstop2h 33m
Los AngelesDenver
LAX - DEN
LAXDEN
Los Angeles
Wed 4/30
6:15 am-9:46 am
Nonstop2h 31m
Denver Intl
Wed 5/7
7:00 am-2:46 pm
1 stop8h 46m
Los AngelesDenver
LAX - DEN
LAXDEN
Los Angeles
Tue 6/17
7:45 pm-11:09 pm
Nonstop2h 24m
Denver Intl
Tue 6/24
6:00 am-7:36 am
Nonstop2h 36m
Los AngelesDenver
LAX - DEN
LAXDEN
Los Angeles
Tue 5/13
1:56 pm-11:59 pm
1 stop9h 03m
Denver Intl
Wed 5/14
6:37 pm-11:59 pm
1 stop6h 22m
Los AngelesDenver
LAX - DEN
LAXDEN
Los Angeles
Wed 5/21
3:36 pm-12:05 am
1 stop7h 29m
Denver Intl
Sat 5/24
7:05 pm-11:56 pm
1 stop5h 51m
Los AngelesDenver
LAX - DEN
LAXDEN
Los Angeles
Mon 5/26
11:59 pm-11:27 am
1 stop10h 28m
Denver Intl
Thu 5/29
6:30 pm-8:24 am
1 stop14h 54m
Los AngelesDenver
LAX - DEN
LAXDEN
Los Angeles
Wed 5/7
1:59 pm-5:41 pm
Nonstop2h 42m
Best time to book a flight from Los Angeles to Boulder
Have a flexible travel schedule? Discover the best time to fly to Boulder from Los Angeles with our price prediction graph.
Cheapflights Insights
Everything you need to know about your flight from Los Angeles to Boulder
How far ahead should I book a flight from Los Angeles to Boulder?
Use this chart to determine the optimal time to book a round-trip flight from Los Angeles to Boulder. Price data was last updated on April 11, 2025.
The price you pay for your flight from Los Angeles to Boulder may vary depending on when you book. For the best chance of a lower fare, look to book 31 days in advance of your trip. Fares are likely to increase a fortnight or so before your departure date.
What is the cheapest month to book a flight from Los Angeles to Boulder?
Currently, October is the cheapest month in which you can book a flight from Los Angeles to Boulder (average of $197). Flying from Los Angeles to Boulder in March is currently the most expensive (average of $278). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.
What is the cheapest time of day to fly from LAX to BD9?
Find hourly flight availability from Los Angeles to Boulder. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated April 15, 2025.
When flying from Los Angeles to Boulder, the time of day you decide to fly out makes little to no difference towards the overall price you’ll pay on tickets.
What is the cheapest day to fly from Los Angeles to Boulder?
Use this chart to determine the cheapest time to fly round-trip from Los Angeles to Boulder. Price data was last updated on December 16, 2024.
Travelers seeking maximum savings on their Los Angeles to Boulder flight should consider departing on Saturday afternoons when fares are most often at their lowest. Sunday at noon flights should be avoided if possible as fares are typically the most expensive at this time.
Weekly flight availability from Los Angeles to Boulder
Explore weekly flight availability from Los Angeles to Boulder. Discover flights operating on different days of the week, giving you the flexibility to choose a travel day that best fits your plans. Compare info to find the most convenient option for your journey. Data last updated April 15, 2025.
The most flights from LAX to BD9 are scheduled on a Monday (92 on average). You will have fewer flight options on Sunday, which is when the least amount of flights are scheduled (67 on average).
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 0.5 - 2.3 inches per month. May is typically the wettest month, when rainfall can reach 2.3 in. January is typically the driest time to visit Boulder when rainfall is around 0.5 in.
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 73.4 F. Travelers looking to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 30.2 F).
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 April 15, 2025.
See what other customers who have flown with Alaska Airlines, Southwest and Delta from Los Angeles to Boulder have to say. Users have also rated airlines in terms of entertainment options, comfort, food, crew/service, and boarding process.
Comfort
Entertainment
Food
Overall
Boarding
Crew
Reviews
Cheri,Jan 2025
FAT - SEA
Comfort
Entertainment
Food
Overall
Boarding
Crew
Reviews
Cheri,Jan 2025
FAT - SEA
Comfort
Entertainment
Food
Overall
Boarding
Crew
Reviews
Cheri,Jan 2025
FAT - SEA
Comfort
Entertainment
Food
Overall
Boarding
Crew
Reviews
Cheri,Jan 2025
FAT - SEA
Comfort
Entertainment
Food
Overall
Boarding
Crew
Reviews
Cheri,Jan 2025
FAT - SEA
Comfort
Entertainment
Food
Overall
Boarding
Crew
Reviews
Cheri,Jan 2025
FAT - SEA
Related info for your journey
Find useful and relevant information for your journey from Los Angeles to Boulder. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.
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Alternative routes for Los Angeles to Boulder
See prices for flight routes from nearby airports that may be better suited for you.
Top 5 airlines flying from Los Angeles to Boulder
Discover the top 5 airlines that operate flights from Los Angeles to Boulder. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated April 15, 2025.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$55 | Average$152 | FlexibilityNo cancel fee | On-time62% | |
| Cheapest$109 | Average$242 | FlexibilityNo cancel fee | On-timeN/A | |
| Cheapest$142 | Average$303 | FlexibilityNo cancel fee | On-time71% | |
| Cheapest$144 | Average$304 | FlexibilityNo cancel fee | On-time63% | |
| Cheapest$155 | Average$369 | FlexibilityNo cancel fee | On-time69% |