$23 Cheap flight deals from Los Angeles (QLA) to Boulder (DEN)

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This Weekend's Flight Deals from Los Angeles to Boulder

This weekend's flight prices found within the past 7 days, for the period specified. Prices and availability are subject to change. Additional terms apply.

Sat, Jan 31 - Wed, Feb 4
LAX
Los Angeles Intl.
DEN
Denver Intl.
$262 Roundtrip, found 3 hours ago
$262
Roundtrip
found 3 hours ago
Select Frontier Airlines flight, departing Sat, Jan 31 from Los Angeles Intl. to Denver Intl., returning Wed, Feb 4, priced at $262 found 3 hours ago
Sun, Feb 1 - Thu, Feb 5
ONT
Los Angeles - Ontario Intl.
DEN
Denver Intl.
$308 Roundtrip, found 14 hours ago
$308
Roundtrip
found 14 hours ago
Select Frontier Airlines flight, departing Sun, Feb 1 from Los Angeles - Ontario Intl. to Denver Intl., returning Thu, Feb 5, priced at $308 found 14 hours ago
Sun, Feb 1 - Wed, Feb 4
BUR
Hollywood Burbank
DEN
Denver Intl.
$494 Roundtrip, found 21 hours ago
$494
Roundtrip
found 21 hours ago
Select Frontier Airlines flight, departing Sun, Feb 1 from Hollywood Burbank to Denver Intl., returning Wed, Feb 4, priced at $494 found 21 hours ago
Sat, Jan 31 - Thu, Mar 5
SNA
John Wayne
DEN
Denver Intl.
$571 Roundtrip, found 1 hour ago
$571
Roundtrip
found 1 hour ago
Select Alaska Airlines flight, departing Sat, Jan 31 from John Wayne to Denver Intl., returning Thu, Mar 5, priced at $571 found 1 hour ago

Airfares from $23 One Way, $47 Round Trip from Los Angeles to Boulder

Prices starting at $47 for return flights and $23 for one-way flights to Boulder were the cheapest prices found within the past 7 days, for the period specified. Prices and availability are subject to change. Additional terms apply.

Sat, Feb 28 - Sat, Mar 7
SNA
Orange County
DEN
Denver
$47 Roundtrip, found 15 hours ago
$47
Roundtrip
found 15 hours ago
Select Frontier Airlines flight, departing Sat, Feb 28 from Orange County to Denver, returning Sat, Mar 7, priced at $47 found 15 hours ago
Tue, Mar 3 - Tue, Mar 10
LAX
Los Angeles
DEN
Denver
$47 Roundtrip, found 16 hours ago
$47
Roundtrip
found 16 hours ago
Select Frontier Airlines flight, departing Tue, Mar 3 from Los Angeles to Denver, returning Tue, Mar 10, priced at $47 found 16 hours ago
Tue, Feb 24 - Tue, Mar 3
ONT
Ontario
DEN
Denver
$47 Roundtrip, found 15 hours ago
$47
Roundtrip
found 15 hours ago
Select Frontier Airlines flight, departing Tue, Feb 24 from Ontario to Denver, returning Tue, Mar 3, priced at $47 found 15 hours ago
Thu, Feb 19 - Mon, Feb 23
BUR
Burbank
DEN
Denver
$149 Roundtrip, found 2 days ago
$149
Roundtrip
found 2 days ago
Select Frontier Airlines flight, departing Thu, Feb 19 from Burbank to Denver, returning Mon, Feb 23, priced at $149 found 2 days ago
Sat, Feb 14 - Sat, Feb 21
LGB
Long Beach
DEN
Denver
$161 Roundtrip, found 6 days ago
$161
Roundtrip
found 6 days ago
Select Southwest Airlines flight, departing Sat, Feb 14 from Long Beach to Denver, returning Sat, Feb 21, priced at $161 found 6 days ago

Boulder economy flight packages

Price found within the past 48 hours. Click for updated prices.
Gold Point Resort Breckenridge by Vacatia
3.0-star property

Gold Point Resort Breckenridge by Vacatia

9.2/10 Wonderful! (111 reviews)

Mar 16 - Mar 20

4 night stay

Ontario (ONT) to Denver (DEN)

Frontier Airlines • Roundtrip • Coach
Save 100% on your flight
Price was $896, price is now $592 per person
$592
per person
found 1 day ago
The place was OK, but I had higher expectations. The view was wonderful, but the condo was just basic and lacking character and dated.

Reviewed on Sep 5, 2023

Hyatt Vacation Club at The Ranahan
4.0-star property

Hyatt Vacation Club at The Ranahan

9.6/10 Exceptional! (1,598 reviews)

Mar 14 - Mar 17

3 night stay

Ontario (ONT) to Denver (DEN)

Frontier Airlines • Roundtrip • Coach
Save 100% on your flight
Price was $1,157, price is now $688 per person
$688
per person
found 1 day ago
Staff were excellent. Rooms look like there brand new

Reviewed on Jan 15, 2026

Manor Vail Lodge
4.5-star property

Manor Vail Lodge

9.6/10 Exceptional! (714 reviews)

Mar 5 - Mar 10

5 night stay

Ontario (ONT) to Denver (DEN)

Frontier Airlines • Roundtrip • Coach
Save 100% on your flight
Price was $3,192, price is now $2,005 per person
$2,005
per person
found 1 day ago
5 stars for a great location, extremely clean facility, friendly staff, spacious 1 bedroom unit, bar & grill on site and complimentary hot/cold breakfast & hot chocolate and cookies after skiing. Located on the east end of Vail, it's perfectly situated if you want to be walking distance to the Village and the Ski School. Free bus shuttle into the village & lionshead if you don't want to walk and very simple to navigate. Lionshead is approx 1.5 miles. Complimentary ski valet at the base of Golden Peak. A great location for easily accessing the back bowls at the Vail ski resort. We stayed in LionsHead last trip and it took some effort to get in the back area of the mountain. The complimentary breakfast buffet from 7-9am was fantastic-included an omelet station along with 4-5 buffet trays that had take out options if you didn't want to dine in. 4 stars for my 1 bedroom condo (081) which was in the basement facing the back creek in a building where the only elevator getting downstairs was broken. (not a platinum or diamond level if you care). Location within complex made up for it as it was steps from the Riva Bahn lift and close to pool/hot tub. Comfy bed, great shower but bathroom tight considering the size of the unit. Even though its a condo, there are hotel like qualities - daily garbage removal-fresh towels-bed making. Service was great and the cleaning crew was nice! Manor Lodge pays attention to the small details, we would stay again for sure!

Reviewed on Feb 17, 2025

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More About Flying To Boulder from Los Angeles

Route Information for Flights from Los Angeles to Boulder

Origin Airport IATA Code
QLA
Destination Airport IATA Code
DEN
Distance
Direct Flight Airlines
Earliest Flight Arrival
Latest Flight Arrival

Los Angeles to Boulder

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Frequently asked questions

Are there non-stop flights from Los Angeles to Boulder?
There are 6 airlines that jet directly from LAX to DIA airport. Find exactly what you need with one of these top carriers:

  • United Airlines
  • Southwest Airlines
  • Delta
  • American Airlines
  • Spirit Airlines

What is the shortest flight from Los Angeles to Boulder?
It can take as little as 2 hours and 15 minutes to fly from Los Angeles Intl. Airport (LAX) to Denver, CO (DEN-Denver Intl.). Relax and enjoy the service, because you'll be walking through arrivals in next to no time.
What airlines fly from Los Angeles to Boulder most frequently?
These airlines fly most frequently from Los Angeles to Boulder. No matter your travel schedule, you're sure to find one to your liking among these well-known carriers: United Airlines - (UA) with 234 flights every month Southwest Airlines - (WN) with 156 flights every month Delta - (DL) with 121 flights every month American Airlines - (AA) with 91 flights every month Spirit Airlines - (NK) with 30 flights every month Frontier Airlines - (F9) with 4 flights every month
What is the cheapest day of the week to fly?
Consider flying out early in the week to save on your airfare. Orbitz data from 2021 shows that Monday is the cheapest day to depart, followed by Tuesday. Saturday showed the highest average ticket prices likely because many travelers prefer to start their vacation on a weekend.
What is the cheapest month to fly?
We won't keep you guessing, according to Orbitz data from 2021, the cheapest month to fly is February. Perfect for those who need a weekend getaway, or just a break from it all in the shortest month of the year. Be aware that the most expensive time to fly is during the height of summer in July, and in the holiday month of December.*According to flight demand on Orbitz.com from January to December 2021. Savings are subject to change based on departure location, date and destination.

More Destinations

Fare, taxes & fees: Fares include all taxes and fees, except baggage fees. Rates shown reflect fares found by other Orbitz users over the past 7 days. Due to rapidly changing airline prices & seat availability, these fares may no longer be available.

Refunds/changes/cancellations: Itinerary changes, if permitted for the fare, will have a $30 service fee charged by Orbitz. Additional airline charges may apply.

Other conditions: Schedules, fares and rules are subject to change without notice. Seats are limited and may not be available on all flights/dates or in all markets. Lower fares may be available. Fares will not be honored retroactively or in exchange for any wholly/partially unused ticket. Tickets are non-transferable and non-refundable. Fare rules are provided for the selected itinerary before booking.