Travel with Axel,
get the best price.

Carlsbad → San Francisco

Choose your travel dates

CLD → SFO1 adulteconomy

9 flight options · 2 airlines

Round-trip flights

Fri, Nov 20 – Mon, Nov 23

United Airlines
1:49 pmCLD
1h 31m
Nonstop
3:20 pmSFO
United Airlines
10:15 amSFO
1h 46m
Nonstop
12:01 pmCLD

Round-trip total · 1 adult · Taxes included

Fri, Nov 20 – Mon, Nov 23

American Airlines
12:29 pmCLD
7h 10m
PHX · 3h 46m
7:39 pmSFO
United Airlines
10:15 amSFO
1h 46m
Nonstop
12:01 pmCLD

Round-trip total · 1 adult · Taxes included

Fri, Nov 27 – Fri, Dec 4

United Airlines
7:30 amCLD
1h 39m
Nonstop
9:09 amSFO
United Airlines
10:25 amSFO
1h 46m
Nonstop
12:11 pmCLD

Round-trip total · 1 adult · Taxes included

Fri, Nov 20 – Mon, Nov 23

United Airlines
7:30 amCLD
1h 39m
Nonstop
9:09 amSFO
United Airlines
10:15 amSFO
1h 46m
Nonstop
12:01 pmCLD

Round-trip total · 1 adult · Taxes included

Fri, Nov 27 – Fri, Dec 4

United Airlines
1:49 pmCLD
1h 31m
Nonstop
3:20 pmSFO
United Airlines
10:25 amSFO
1h 46m
Nonstop
12:11 pmCLD

Round-trip total · 1 adult · Taxes included

Fri, Nov 27 – Fri, Dec 4

American Airlines
12:29 pmCLD
7h 10m
PHX · 3h 46m
7:39 pmSFO
United Airlines
10:25 amSFO
1h 46m
Nonstop
12:11 pmCLD

Round-trip total · 1 adult · Taxes included

One-way flights

Fri, Nov 20 · One way

United Airlines
1:49 pmCLD
1h 31m
Nonstop
3:20 pmSFO

One-way total · 1 adult · Taxes included

Fri, Nov 20 · One way

American Airlines
12:29 pmCLD
7h 10m
PHX · 3h 46m
7:39 pmSFO

One-way total · 1 adult · Taxes included

Fri, Nov 20 · One way

United Airlines
7:30 amCLD
1h 39m
Nonstop
9:09 amSFO

One-way total · 1 adult · Taxes included

Make this trip yours

CLD ⇄ SFO

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.
  • 24-hour cancellationCancel within 24 hours of booking for a full refund when your departure is at least 7 days away. Closer to departure, the airline’s fare rules apply. 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

Nov 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)
2026-11-20 · one wayUnited AirlinesUA5599$165.002026-10-29T00:56:26Z
2026-11-20 → 2026-11-23United AirlinesUA5599 / UA5510$310.002026-10-29T00:56:26Z
2026-11-20 · one wayAmerican AirlinesAA4225 + AA2234$220.002026-10-29T00:56:26Z
2026-11-20 → 2026-11-23American Airlines / United AirlinesAA4225 + AA2234 / UA5510$360.002026-10-29T00:56:26Z
2026-11-27 → 2026-12-04United AirlinesUA5519 / UA5510$348.752026-10-29T00:56:26Z
2026-11-20 · one wayUnited AirlinesUA5519$165.002026-10-29T00:56:26Z
2026-11-20 → 2026-11-23United AirlinesUA5519 / UA5510$310.002026-10-29T00:56:26Z
2026-11-27 → 2026-12-04United AirlinesUA5599 / UA5510$348.752026-10-29T00:56:26Z
2026-11-27 → 2026-12-04American Airlines / United AirlinesAA4225 + AA2234 / UA5510$411.252026-10-29T00:56:26Z

2026-11-20 · one way · $165.00

  • United Airlines UA5599: CLD 2026-11-20 13:49:00 → SFO 2026-11-20 15:20:00; nonstop; 91 minutes. Local airport times.

2026-11-20 → 2026-11-23 · $310.00

  • United Airlines UA5599: CLD 2026-11-20 13:49:00 → SFO 2026-11-20 15:20:00; nonstop; 91 minutes. Local airport times.
  • United Airlines UA5510: SFO 2026-11-23 10:15:00 → CLD 2026-11-23 12:01:00; nonstop; 106 minutes. Local airport times.

2026-11-20 · one way · $220.00

  • American Airlines AA4225 / AA2234: CLD 2026-11-20 12:29:00 → SFO 2026-11-20 19:39:00; 1 stop(s) via PHX; 430 minutes. Local airport times.
    • AA4225: CLD 2026-11-20 12:29:00 → PHX 2026-11-20 14:49:00; layover at PHX: 226 minutes.
    • AA2234: PHX 2026-11-20 18:35:00 → SFO 2026-11-20 19:39:00.

2026-11-20 → 2026-11-23 · $360.00

  • American Airlines AA4225 / AA2234: CLD 2026-11-20 12:29:00 → SFO 2026-11-20 19:39:00; 1 stop(s) via PHX; 430 minutes. Local airport times.
    • AA4225: CLD 2026-11-20 12:29:00 → PHX 2026-11-20 14:49:00; layover at PHX: 226 minutes.
    • AA2234: PHX 2026-11-20 18:35:00 → SFO 2026-11-20 19:39:00.
  • United Airlines UA5510: SFO 2026-11-23 10:15:00 → CLD 2026-11-23 12:01:00; nonstop; 106 minutes. Local airport times.

2026-11-27 → 2026-12-04 · $348.75

  • United Airlines UA5519: CLD 2026-11-27 07:30:00 → SFO 2026-11-27 09:09:00; nonstop; 99 minutes. Local airport times.
  • United Airlines UA5510: SFO 2026-12-04 10:25:00 → CLD 2026-12-04 12:11:00; nonstop; 106 minutes. Local airport times.

2026-11-20 · one way · $165.00

  • United Airlines UA5519: CLD 2026-11-20 07:30:00 → SFO 2026-11-20 09:09:00; nonstop; 99 minutes. Local airport times.

2026-11-20 → 2026-11-23 · $310.00

  • United Airlines UA5519: CLD 2026-11-20 07:30:00 → SFO 2026-11-20 09:09:00; nonstop; 99 minutes. Local airport times.
  • United Airlines UA5510: SFO 2026-11-23 10:15:00 → CLD 2026-11-23 12:01:00; nonstop; 106 minutes. Local airport times.

2026-11-27 → 2026-12-04 · $348.75

  • United Airlines UA5599: CLD 2026-11-27 13:49:00 → SFO 2026-11-27 15:20:00; nonstop; 91 minutes. Local airport times.
  • United Airlines UA5510: SFO 2026-12-04 10:25:00 → CLD 2026-12-04 12:11:00; nonstop; 106 minutes. Local airport times.

2026-11-27 → 2026-12-04 · $411.25

  • American Airlines AA4225 / AA2234: CLD 2026-11-27 12:29:00 → SFO 2026-11-27 19:39:00; 1 stop(s) via PHX; 430 minutes. Local airport times.
    • AA4225: CLD 2026-11-27 12:29:00 → PHX 2026-11-27 14:49:00; layover at PHX: 226 minutes.
    • AA2234: PHX 2026-11-27 18:35:00 → SFO 2026-11-27 19:39:00.
  • United Airlines UA5510: SFO 2026-12-04 10:25:00 → CLD 2026-12-04 12:11:00; nonstop; 106 minutes. Local airport times.

More dates for this route