$28 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, Mar 7 - Mon, Mar 9
LAX
Los Angeles Intl.
DEN
Denver Intl.
$169 Roundtrip, just found
$169
Roundtrip
just found
Select Frontier Airlines flight, departing Sat, Mar 7 from Los Angeles Intl. to Denver Intl., returning Mon, Mar 9, priced at $169 just found
Sat, Mar 7 - Tue, Mar 10
SNA
John Wayne
DEN
Denver Intl.
$192 Roundtrip, found 9 hours ago
$192
Roundtrip
found 9 hours ago
Select Frontier Airlines flight, departing Sat, Mar 7 from John Wayne to Denver Intl., returning Tue, Mar 10, priced at $192 found 9 hours ago
Fri, Mar 6 - Mon, Mar 9
ONT
Los Angeles - Ontario Intl.
DEN
Denver Intl.
$215 Roundtrip, found 5 hours ago
$215
Roundtrip
found 5 hours ago
Select Frontier Airlines flight, departing Fri, Mar 6 from Los Angeles - Ontario Intl. to Denver Intl., returning Mon, Mar 9, priced at $215 found 5 hours ago
Sun, Mar 8 - Mon, Mar 9
LGB
Long Beach Municipal
DEN
Denver Intl.
$350 Roundtrip, found 6 days ago
$350
Roundtrip
found 6 days ago
Select Southwest Airlines flight, departing Sun, Mar 8 from Long Beach Municipal to Denver Intl., returning Mon, Mar 9, priced at $350 found 6 days ago

Airfares from $28 One Way, $46 Round Trip from Los Angeles to Boulder

Prices starting at $46 for return flights and $28 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.

Tue, May 5 - Tue, May 19
LAX
Los Angeles
DEN
Denver
$46 Roundtrip, found 5 days ago
$46
Roundtrip
found 5 days ago
Select Frontier Airlines flight, departing Tue, May 5 from Los Angeles to Denver, returning Tue, May 19, priced at $46 found 5 days ago
Tue, Apr 7 - Tue, Apr 14
ONT
Ontario
DEN
Denver
$57 Roundtrip, found 2 days ago
$57
Roundtrip
found 2 days ago
Select Frontier Airlines flight, departing Tue, Apr 7 from Ontario to Denver, returning Tue, Apr 14, priced at $57 found 2 days ago
Sat, Apr 18 - Sat, Apr 25
SNA
Orange County
DEN
Denver
$57 Roundtrip, found 2 days ago
$57
Roundtrip
found 2 days ago
Select Frontier Airlines flight, departing Sat, Apr 18 from Orange County to Denver, returning Sat, Apr 25, priced at $57 found 2 days ago
Mon, May 4 - Tue, May 5
LAX
Los Angeles
DEN
Denver
$143 Roundtrip, found 3 days ago
$143
Roundtrip
found 3 days ago
Select United flight, departing Mon, May 4 from Los Angeles to Denver, returning Tue, May 5, priced at $143 found 3 days ago
Mon, May 4 - Tue, May 5
LAX
Los Angeles
DEN
Denver
$143 Roundtrip, found 3 days ago
$143
Roundtrip
found 3 days ago
Select Delta flight, departing Mon, May 4 from Los Angeles to Denver, returning Tue, May 5, priced at $143 found 3 days ago

Boulder economy flight packages

Price found within the past 48 hours. Click for updated prices.
Hampton Inn Boulder - Louisville
2.5-star property

Hampton Inn Boulder - Louisville

8/10 Very Good! (962 reviews)

Apr 4 - Apr 11

7 night stay

Los Angeles (LAX) to Denver (DEN)

Frontier Airlines • Coach

Denver (DEN) to Los Angeles (LAX)

Delta • Coach
Save 100% on your flight
Price was $510, price is now $336 per person
$336
per person
found 1 day ago
We had a goid time and the hotel was clean. The bathroom was outdated and the staff was not always present at the frint desk. I went to check out at 9.30 AM and no receptionist or signs of "be right back" were displayed, so after 10 minutes I left the key on the counter and left.

Reviewed on Sep 29, 2024

Colorado Chautauqua
3.0-star property

Colorado Chautauqua

9.6/10 Exceptional! (515 reviews)

Apr 4 - Apr 11

7 night stay

Los Angeles (LAX) to Denver (DEN)

Frontier Airlines • Coach

Denver (DEN) to Los Angeles (LAX)

Delta • Coach
Save 100% on your flight
Price was $1,330, price is now $891 per person
$891
per person
found 1 day ago
I enjoyed my stay very much. The room was very nice, but of course it is old, which I expected. Thus, you can you can hear people walking on the floor above you. Not that big a deal and I would stay there again especially given its access to beautiful hikes.

Reviewed on Oct 17, 2024

A-Lodge Boulder
3.0-star property

A-Lodge Boulder

8.8/10 Excellent! (1,002 reviews)

Apr 4 - Apr 11

7 night stay

Los Angeles (LAX) to Denver (DEN)

Frontier Airlines • Coach

Denver (DEN) to Los Angeles (LAX)

Delta • Coach
Save 100% on your flight
Price was $705, price is now $473 per person
$473
per person
found 1 day ago
It is a really nice place to stay very comfortable and clean, and the staff was really awesome and very understandable and helpful with getting everything accessible to our needs and I like the location. It was off the beaten path and very secluded, which was what I liked the only downfall was the service on the cell phone, but they do have Wi-Fi that is fast and reliable, but at first you worry about that and then you realize that everything‘s all good. but I really liked it and it’s like a little sweet with a little sitting area and only downfall that I had personally was. I didn’t have a bathtub only a walk-in shower, but it did have microwave stove, and a mini fridge, which was cool even though I wasn’t staying there that long for all of that, but it was nice that it was there and the bay was pretty comfortable and then they also have lots of activities that you can do around there so come check it out. It’s a nice place to stay.

Reviewed on Feb 5, 2026

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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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Stay in Your Budget and Still Get Great Accommodations

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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.