$59+ 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 8/12. Fares are subject to change and may not be available on all flights or dates of travel.
LAX — DEN
Jul 5 — Jul 121
Round-trip
1 adult, Economy
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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 September or August, booked 63 days in advance, depart on a Friday or Tuesday and return on a Thursday
Cheap flight deals from Los Angeles to Boulder
Cheapest
Best
Last-minute
One-way
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 June 5, 2026.
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 June 5, 2026.
This Kiwi.com deal was found by Cheapflights users on 5/31. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 8/116:30 am
LAX
- DEN
Nonstop2h 33m
Frontier
Sat 8/157:00 am
DEN
- LAX
Nonstop2h 30m
Frontier
Deal found 5/31![Frontier logo]()
$101
This Mytrip deal was found by Cheapflights users on 6/5. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 10/56:15 am
LAX
- DEN
Nonstop2h 25m
Frontier
Sat 10/1710:29 pm
DEN
- LAX
Nonstop2h 34m
Frontier
Deal found 6/5![Frontier logo]()
$103
This Frontier deal was found by Cheapflights users on 6/4. 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 Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 6/306:30 am
LAX
- DEN
Nonstop2h 32m
Frontier
Wed 7/810:39 pm
DEN
- LAX
Nonstop2h 32m
Frontier
Deal found 6/4![Frontier logo]()
$104
This Cheapflightsfares deal was found by Cheapflights users on 6/2. 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.
Wed 7/156:30 am
LAX
- DEN
Nonstop2h 33m
Frontier
Sat 7/1810:39 pm
DEN
- LAX
Nonstop2h 32m
Frontier
Deal found 6/2![Frontier logo]()
$105
This Kiwi.com deal was found by Cheapflights users on 6/2. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 7/77:46 pm
LAX
- DEN
Nonstop2h 36m
Frontier
Wed 7/1510:39 pm
DEN
- LAX
Nonstop2h 32m
Frontier
Deal found 6/2![Frontier logo]()
$106
This Frontier deal was found by Cheapflights users on 6/4. 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 Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 8/89:05 pm
LAX
- DEN
Nonstop2h 37m
Frontier
Tue 8/1110:39 pm
DEN
- LAX
Nonstop2h 32m
Frontier
Deal found 6/4![Frontier logo]()
$107
This deal was found by Cheapflights users on 6/1. 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 is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 10/182:54 pm
LAX
- DEN
1 stop4h 32m
Frontier
Tue 10/2012:17 pm
DEN
- LAX
Nonstop2h 42m
Frontier
Deal found 6/1![Frontier logo]()
$108
This Cheapflightsfares deal was found by Cheapflights users on 6/2. 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.
Tue 7/216:30 am
LAX
- DEN
Nonstop2h 33m
Frontier
Tue 7/2110:39 pm
DEN
- LAX
Nonstop2h 32m
Frontier
Deal found 6/2![Frontier logo]()
$109
This Kiwi.com deal was found by Cheapflights users on 6/3. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 7/81:56 pm
LAX
- DEN
1 stop4h 50m
Frontier
Wed 7/810:39 pm
DEN
- LAX
Nonstop2h 32m
Frontier
Deal found 6/3![Frontier logo]()
$110
This Kiwi.com deal was found by Cheapflights users on 6/3. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 7/110:10 am
LAX
- DEN
1 stop6h 11m
Frontier
Tue 7/710:39 pm
DEN
- LAX
Nonstop2h 32m
Frontier
Deal found 6/3![Frontier logo]()
$111
This Cheapflightsfares deal was found by Cheapflights users on 6/4. 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.
Sat 7/48:56 pm
LAX
- DEN
Nonstop2h 44m
Frontier
Wed 7/810:39 pm
DEN
- LAX
Nonstop2h 32m
Frontier
Deal found 6/4![Frontier logo]()
$112
This Cheapflightsfares deal was found by Cheapflights users on 6/2. 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.
Fri 8/148:49 pm
LAX
- DEN
Nonstop2h 40m
Frontier
Sat 8/1510:39 pm
DEN
- LAX
Nonstop2h 32m
Frontier
Deal found 6/2![Frontier logo]()
$113
Best flights from Los Angeles to BoulderDiscover carefully curated flight deals from Los Angeles to Boulder that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated June 5, 2026.
Discover carefully curated flight deals from Los Angeles to Boulder that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated June 5, 2026.
This Delta deal was found by Cheapflights users on 5/31. 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.
Sat 8/156:30 pm
LAX
- DEN
Nonstop2h 19m
Delta
Wed 8/197:31 am
DEN
- LAX
Nonstop2h 29m
Delta
Deal found 5/31![Delta logo]()
$130
This United Airlines deal was found by Cheapflights users on 5/31. 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.
Tue 6/305:00 am
LAX
- DEN
Nonstop2h 22m
United Airlines
Tue 6/309:20 pm
DEN
- LAX
Nonstop2h 35m
United Airlines
Deal found 5/31![United Airlines logo]()
$153
This Southwest deal was found by Cheapflights users on 6/2. 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.
Wed 6/243:40 pm
LAX
- DEN
1 stop5h 10m
Southwest
Tue 6/305:05 pm
DEN
- LAX
1 stop5h 05m
Southwest
Deal found 6/2![Southwest logo]()
$165
This Delta deal was found by Cheapflights users on 5/31. 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.
Wed 7/18:32 pm
LAX
- DEN
Nonstop2h 27m
Delta
Wed 7/812:29 pm
DEN
- LAX
Nonstop2h 27m
Delta
Deal found 5/31![Delta logo]()
$145
This Southwest deal was found by Cheapflights users on 6/3. 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.
Wed 7/2211:55 am
LAX
- DEN
1 stop5h 15m
Southwest
Wed 8/59:00 am
DEN
- LAX
2 stops6h 00m
Southwest
Deal found 6/3![Southwest logo]()
$170
This Southwest deal was found by Cheapflights users on 6/5. 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.
Tue 9/16:45 am
LAX
- DEN
1 stop4h 05m
Southwest
Sat 9/59:10 am
DEN
- LAX
1 stop4h 00m
Southwest
Deal found 6/5![Southwest logo]()
$183
This Delta deal was found by Cheapflights users on 5/31. 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.
Sat 8/156:30 pm
LAX
- DEN
Nonstop2h 19m
Delta
Sun 8/166:44 pm
DEN
- LAX
1 stop6h 51m
Delta
Deal found 5/31![Delta logo]()
$237
This Southwest deal was found by Cheapflights users on 6/2. 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.
Fri 7/245:55 am
LAX
- DEN
Nonstop2h 25m
Southwest
Wed 7/299:05 pm
DEN
- LAX
Nonstop2h 35m
Southwest
Deal found 6/2![Southwest logo]()
$234
This Southwest deal was found by Cheapflights users on 6/5. 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.
Wed 7/295:35 am
LAX
- DEN
2 stops6h 00m
Southwest
Tue 8/49:00 am
DEN
- LAX
2 stops6h 00m
Southwest
Deal found 6/5![Southwest logo]()
$238
This Southwest deal was found by Cheapflights users on 6/4. 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.
Mon 7/135:45 pm
LAX
- DEN
1 stop4h 25m
Southwest
Wed 7/158:15 am
DEN
- LAX
1 stop4h 15m
Southwest
Deal found 6/4![Southwest logo]()
$239
This Southwest deal was found by Cheapflights users on 6/1. 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.
Fri 8/147:35 am
LAX
- DEN
1 stop4h 45m
Southwest
Mon 8/175:55 pm
DEN
- LAX
1 stop3h 55m
Southwest
Deal found 6/1![Southwest logo]()
$247
This Southwest deal was found by Cheapflights users on 6/3. 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.
Sun 7/197:05 pm
LAX
- DEN
1 stop5h 30m
Southwest
Tue 8/119:00 am
DEN
- LAX
2 stops6h 00m
Southwest
Deal found 6/3![Southwest logo]()
$253
Last-minute flights from Los Angeles to BoulderDiscover last-minute flight deals from Los Angeles to Boulder. Data last updated June 5, 2026 and is based on user searches.
Discover last-minute flight deals from Los Angeles to Boulder. Data last updated June 5, 2026 and is based on user searches.
This Kiwi.com deal was found by Cheapflights users on 6/2. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 6/2412:14 pm
LAX
- DEN
1 stop8h 28m
Frontier
Wed 7/110:39 pm
DEN
- LAX
Nonstop2h 32m
Frontier
Deal found 6/2![Frontier logo]()
$113
This Frontier deal was found by Cheapflights users on 6/4. 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 Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 6/306:30 am
LAX
- DEN
Nonstop2h 32m
Frontier
Wed 7/810:39 pm
DEN
- LAX
Nonstop2h 32m
Frontier
Deal found 6/4![Frontier logo]()
$104
This Kiwi.com deal was found by Cheapflights users on 6/4. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 6/306:30 am
LAX
- DEN
Nonstop2h 32m
Frontier
Tue 7/710:39 pm
DEN
- LAX
Nonstop2h 32m
Frontier
Deal found 6/4![Frontier logo]()
$115
This Kiwi.com deal was found by Cheapflights users on 6/3. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 7/110:10 am
LAX
- DEN
1 stop6h 11m
Frontier
Tue 7/710:39 pm
DEN
- LAX
Nonstop2h 32m
Frontier
Deal found 6/3![Frontier logo]()
$111
This Cheapflightsfares deal was found by Cheapflights users on 6/4. 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.
Sat 7/48:56 pm
LAX
- DEN
Nonstop2h 44m
Frontier
Wed 7/810:39 pm
DEN
- LAX
Nonstop2h 32m
Frontier
Deal found 6/4![Frontier logo]()
$112
This Kiwi.com deal was found by Cheapflights users on 6/2. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 7/77:46 pm
LAX
- DEN
Nonstop2h 36m
Frontier
Wed 7/1510:39 pm
DEN
- LAX
Nonstop2h 32m
Frontier
Deal found 6/2![Frontier logo]()
$106
This Cheapflightsfares deal was found by Cheapflights users on 6/5. 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.
Tue 7/77:46 pm
LAX
- DEN
Nonstop2h 36m
Frontier
Wed 7/87:25 am
DEN
- LAX
Nonstop2h 30m
Frontier
Deal found 6/5![Frontier logo]()
$117
This Kiwi.com deal was found by Cheapflights users on 6/3. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 7/81:56 pm
LAX
- DEN
1 stop4h 50m
Frontier
Wed 7/810:39 pm
DEN
- LAX
Nonstop2h 32m
Frontier
Deal found 6/3![Frontier logo]()
$110
This Cheapflightsfares deal was found by Cheapflights users on 6/2. 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.
Wed 7/156:30 am
LAX
- DEN
Nonstop2h 33m
Frontier
Sat 7/1810:39 pm
DEN
- LAX
Nonstop2h 32m
Frontier
Deal found 6/2![Frontier logo]()
$105
This Cheapflightsfares deal was found by Cheapflights users on 6/2. 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.
Tue 7/216:30 am
LAX
- DEN
Nonstop2h 33m
Frontier
Tue 7/2110:39 pm
DEN
- LAX
Nonstop2h 32m
Frontier
Deal found 6/2![Frontier logo]()
$109
This Kiwi.com deal was found by Cheapflights users on 6/3. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 7/221:56 pm
LAX
- DEN
1 stop4h 50m
Frontier
Wed 8/510:39 pm
DEN
- LAX
Nonstop2h 32m
Frontier
Deal found 6/3![Frontier logo]()
$107
This Frontier deal was found by Cheapflights users on 6/1. 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 Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 7/256:30 am
LAX
- DEN
Nonstop2h 33m
Frontier
Wed 7/2910:39 pm
DEN
- LAX
Nonstop2h 32m
Frontier
Deal found 6/1![Frontier logo]()
$114
One-way flights from Los Angeles to BoulderSearch for one-way flight options from Los Angeles to Boulder. Find affordable one-way fares based on user searches. Data last updated June 5, 2026.
Search for one-way flight options from Los Angeles to Boulder. Find affordable one-way fares based on user searches. Data last updated June 5, 2026.
This Delta deal was found by Cheapflights users on 5/31. 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.
Wed 8/128:30 pm
LAX
- DEN
Nonstop2h 28m
Delta
Deal found 5/31![Delta logo]()
$59
This Kiwi.com deal was found by Cheapflights users on 6/3. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 8/126:30 am
LAX
- DEN
1 stop14h 11m
Frontier
Deal found 6/3![Frontier logo]()
$62
This Kiwi.com deal was found by Cheapflights users on 6/3. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 7/71:56 pm
LAX
- DEN
1 stop4h 50m
Frontier
Deal found 6/3![Frontier logo]()
$65
This Kiwi.com deal was found by Cheapflights users on 6/3. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 7/286:30 am
LAX
- DEN
1 stop20h 18m
Frontier
Deal found 6/3![Frontier logo]()
$66
This Booking.com deal was found by Cheapflights users on 6/2. 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 Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 6/309:43 am
LAX
- DEN
Nonstop2h 28m
Frontier
Deal found 6/2![Frontier logo]()
$68
This Kiwi.com deal was found by Cheapflights users on 6/3. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 7/216:30 am
LAX
- DEN
1 stop20h 18m
Frontier
Deal found 6/3![Frontier logo]()
$69
This Kiwi.com deal was found by Cheapflights users on 6/3. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 8/1910:10 am
LAX
- DEN
1 stop6h 11m
Frontier
Deal found 6/3![Frontier logo]()
$70
This American Airlines deal was found by Cheapflights users on 6/2. 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.
Sat 8/228:25 pm
LAX
- DEN
Nonstop2h 32m
American Airlines
Deal found 6/2![American Airlines logo]()
$72
This Southwest deal was found by Cheapflights users on 6/2. 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.
Wed 7/297:45 pm
LAX
- DEN
Nonstop2h 20m
Southwest
Deal found 6/2![Southwest logo]()
$73
This American Airlines deal was found by Cheapflights users on 6/4. 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.
Tue 8/42:05 pm
LAX
- DEN
Nonstop2h 35m
American Airlines
Deal found 6/4![American Airlines logo]()
$74
Find 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 June 5, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $103 (Mytrip) |
One-way from | $59 (Delta) |
Popular in | March |
Cheapest in | September |
Average price | $257 |
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 June 5, 2026.
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
Cheapest round-trip
Quickest round-trip
Los AngelesDenver
LAX - DEN
LAXDEN
Los Angeles
Sat 8/15
6:30 pm-9:49 pm
Nonstop2h 19m
Denver Intl
Wed 8/19
7:31 am-9:00 am
Nonstop2h 29m
$130
Los AngelesDenver
LAX - DEN
LAXDEN
Los Angeles
Wed 7/1
8:32 pm-11:59 pm
Nonstop2h 27m
Denver Intl
Wed 7/8
12:29 pm-1:56 pm
Nonstop2h 27m
$145
Los AngelesDenver
LAX - DEN
LAXDEN
Los Angeles
Tue 6/30
5:00 am-8:22 am
Nonstop2h 22m
Denver Intl
Tue 6/30
9:20 pm-10:55 pm
Nonstop2h 35m
$153
Los AngelesDenver
LAX - DEN
LAXDEN
Los Angeles
Wed 6/24
3:40 pm-9:50 pm
1 stop5h 10m
Denver Intl
Tue 6/30
5:05 pm-9:10 pm
1 stop5h 05m
$165
Los AngelesDenver
LAX - DEN
LAXDEN
Los Angeles
Wed 7/22
11:55 am-6:10 pm
1 stop5h 15m
Denver Intl
Wed 8/5
9:00 am-2:00 pm
2 stops6h 00m
$170
Los AngelesDenver
LAX - DEN
LAXDEN
Los Angeles
Tue 9/1
6:45 am-11:50 am
1 stop4h 05m
Denver Intl
Sat 9/5
9:10 am-12:10 pm
1 stop4h 00m
$183
Los AngelesDenver
LAX - DEN
LAXDEN
Los Angeles
Fri 7/24
5:55 am-9:20 am
Nonstop2h 25m
Denver Intl
Wed 7/29
9:05 pm-10:40 pm
Nonstop2h 35m
$234
Los AngelesDenver
LAX - DEN
LAXDEN
Los Angeles
Sat 8/15
6:30 pm-9:49 pm
Nonstop2h 19m
Denver Intl
Sun 8/16
6:44 pm-12:35 am
1 stop6h 51m
$237
Los AngelesDenver
LAX - DEN
LAXDEN
Los Angeles
Wed 7/29
5:35 am-12:35 pm
2 stops6h 00m
Denver Intl
Tue 8/4
9:00 am-2:00 pm
2 stops6h 00m
$238
Los AngelesDenver
LAX - DEN
LAXDEN
Los Angeles
Mon 7/13
5:45 pm-11:10 pm
1 stop4h 25m
Denver Intl
Wed 7/15
8:15 am-11:30 am
1 stop4h 15m
$239
Showing 1-10 of 24 resultsSorted by cheapest first
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.
LAX-DEN
Estimated round-trip 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 from Los Angeles to Boulder
LAX-BD9
LAX-DEN
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 June 5, 2026.
Unlike in the morning, when flights are generally more expensive, you can save up to 13% on flights from Los Angeles to Boulder by exploring options for tickets in the evening.
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 June 5, 2026.
The most flights from LAX to BD9 are scheduled on a Friday (101 on average). You will have fewer flight options on Tuesday, which is when the least amount of flights are scheduled (57 on average).
How much does it cost to fly round-trip from Los Angeles to Boulder?
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 May 30, 2026.
Travelers seeking maximum savings on their Los Angeles to Boulder flight should consider departing on Friday evenings when fares are most often at their lowest. Sunday afternoons flights should be avoided if possible as fares are typically the most expensive at this time.
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 June 5, 2026.
Get a feel of what it's like to fly with Southwest,Delta, andUnited Airlines from Los Angeles to Boulder by reading reviews from past customers. Users have also rated airlines in terms of entertainment options, comfort, food, crew/service, and boarding process.
Boarding
8.1
Entertainment
7.5
Crew
8.6
Food
7.0
Overall
8.0
Comfort
8.0
Reviews
1 / 20
8.0
ExcellentLa Tracimeldamarcos,Jun 2026
LAX - SLC
Boarding
8.1
Entertainment
7.5
Crew
8.6
Food
7.0
Overall
8.0
Comfort
8.0
Reviews
1 / 20
8.0
ExcellentLa Tracimeldamarcos,Jun 2026
LAX - SLC
Boarding
8.1
Entertainment
7.5
Crew
8.6
Food
7.0
Overall
8.0
Comfort
8.0
Reviews
1 / 20
8.0
ExcellentLa Tracimeldamarcos,Jun 2026
LAX - SLC
Boarding
8.1
Entertainment
7.5
Crew
8.6
Food
7.0
Overall
8.0
Comfort
8.0
Reviews
1 / 20
8.0
ExcellentLa Tracimeldamarcos,Jun 2026
LAX - SLC
Boarding
8.1
Entertainment
7.5
Crew
8.6
Food
7.0
Overall
8.0
Comfort
8.0
Reviews
1 / 20
8.0
ExcellentLa Tracimeldamarcos,Jun 2026
LAX - SLC
Boarding
8.1
Entertainment
7.5
Crew
8.6
Food
7.0
Overall
8.0
Comfort
8.0
Reviews
1 / 20
8.0
ExcellentLa Tracimeldamarcos,Jun 2026
LAX - SLC
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.
Complete your trip
Complete your trip to Boulder by adding a car rental and/or hotel reservation to your travel itinerary.
Search flights from Los Angeles to Boulder by cabin class
Find flights from Los Angeles to Boulder, based on your preferred cabin class, be it economy, premium economy, business, or first class.
Los Angeles and Boulder flights
Browse other Los Angeles and Boulder flight options. Last updated on June 5, 2026.
Other flights from Los Angeles
Browse through other flights departing from Los Angeles. Flights are based on user searches made on Cheapflights and were last updated on June 5, 2026.
Popular flight searches
Check out other popular destinations found by fellow travelers in 2026
Los Angeles to Boulder flights
Consider these flights traveling from Los Angeles to Boulder.
Top 8 airlines flying from Los Angeles to Boulder
Discover the top 8 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 June 5, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$57 | Average$169 | FlexibilityNo cancel fee | On-time62% | |
| Cheapest$84 | Average$135 | FlexibilityNo cancel fee | On-time88% | |
| Cheapest$90 | Average$254 | FlexibilityNo cancel fee | On-timeN/A | |
| Cheapest$139 | Average$326 | FlexibilityNo cancel fee | On-time63% | |
| Cheapest$141 | Average$265 | FlexibilityNo cancel fee | On-time62% | |
| Cheapest$148 | Average$303 | FlexibilityNo cancel fee | On-time71% | |
| Cheapest$148 | Average$348 | FlexibilityNo cancel fee | On-time69% | |
| Cheapest$398 | Average$563 | FlexibilityNo cancel fee | On-time75% |