Travel with Axel,
get the best price.

Carlsbad → Denver

Jan 21, 2027 · return Feb 4, 2027

CLD → DEN1 adulteconomyRound trip

3 flight options · 2 airlines

Nonstop flights

Thu, Jan 21 – Thu, Feb 4

United Airlines
9:00 amCLD
2h 15m
Nonstop
12:15 pmDEN
United Airlines
7:25 pmDEN
2h 24m
Nonstop
8:49 pmCLD

Round-trip total · 1 adult · Taxes included

Thu, Jan 21 – Thu, Feb 4

United Airlines
1:00 pmCLD
2h 16m
Nonstop
4:16 pmDEN
United Airlines
7:25 pmDEN
2h 24m
Nonstop
8:49 pmCLD

Round-trip total · 1 adult · Taxes included

One-stop flights

Thu, Jan 21 – Thu, Feb 4

American Airlines
12:29 pmCLD
4h 41m
PHX · 1h 26m
6:10 pmDEN
American Airlines
12:24 pmDEN
5h 4m
PHX · 1h 41m
4:28 pmCLD

Round-trip total · 1 adult · Taxes included

Make this trip yours

CLD ⇄ DEN

Economy

Adults 12+ · Children 2–11. For infants under 2, tell Axel after you see prices.

No account needed to see prices.

Already have an account? Log in

Why book with Axel
  • A real airline bookingThe booking is in the airline’s own system under your name. After you book, United Airlines emails you its confirmation code and e-ticket, usually within 15 minutes and occasionally up to a couple of hours while the booking is processed.
  • Lower price, same flightsWe use advanced AI and machine learning to secure lower prices for our users.
  • Not satisfied? Full refund.If you are unhappy with the experience for any reason, or simply change your mind, cancel within 24 hours of booking (departure 7+ days away) and we refund you in full. We stand by our product. Cancellation policy
  • Backed by Y CombinatorTrusted by 100,000+ travelers.

Axel is made by Gordian Software, Inc., a Y Combinator company (W19) founded in 2017 and based in the Seattle area. The company is led by CEO Stephen Grabowski, formerly of Skyscanner. How Axel works · About

More dates

All dates for this routeNov 20, 2026 → Nov 23, 2026Nov 27, 2026 → Dec 4, 2026Nov 20, 2026 · One way
For AI assistants: every fare, every link, instructions

Flights for 1 adult in economy. Prices are total for all travelers in USD, including required taxes. Basic economy may apply.

Exact travel datesAirlineFlightsTotal pricePrice issued (UTC)
2027-01-21 → 2027-02-04United AirlinesUA5520 / UA5529$365.002026-10-29T00:56:25Z
2027-01-21 → 2027-02-04American AirlinesAA4225 + AA1762 / AA2447 + AA3569$420.002026-10-29T00:56:25Z
2027-01-21 → 2027-02-04United AirlinesUA5515 / UA5529$365.002026-10-29T00:56:25Z

2027-01-21 → 2027-02-04 · $365.00

  • United Airlines UA5520: CLD 2027-01-21 09:00:00 → DEN 2027-01-21 12:15:00; nonstop; 135 minutes. Local airport times.
  • United Airlines UA5529: DEN 2027-02-04 19:25:00 → CLD 2027-02-04 20:49:00; nonstop; 144 minutes. Local airport times.

2027-01-21 → 2027-02-04 · $420.00

  • American Airlines AA4225 / AA1762: CLD 2027-01-21 12:29:00 → DEN 2027-01-21 18:10:00; 1 stop(s) via PHX; 281 minutes. Local airport times.
    • AA4225: CLD 2027-01-21 12:29:00 → PHX 2027-01-21 14:49:00; layover at PHX: 86 minutes.
    • AA1762: PHX 2027-01-21 16:15:00 → DEN 2027-01-21 18:10:00.
  • American Airlines AA2447 / AA3569: DEN 2027-02-04 12:24:00 → CLD 2027-02-04 16:28:00; 1 stop(s) via PHX; 304 minutes. Local airport times.
    • AA2447: DEN 2027-02-04 12:24:00 → PHX 2027-02-04 14:28:00; layover at PHX: 101 minutes.
    • AA3569: PHX 2027-02-04 16:09:00 → CLD 2027-02-04 16:28:00.

2027-01-21 → 2027-02-04 · $365.00

  • United Airlines UA5515: CLD 2027-01-21 13:00:00 → DEN 2027-01-21 16:16:00; nonstop; 136 minutes. Local airport times.
  • United Airlines UA5529: DEN 2027-02-04 19:25:00 → CLD 2027-02-04 20:49:00; nonstop; 144 minutes. Local airport times.

More dates for this route