Travel with Axel,
get the best price.

San Francisco → San Antonio

Aug 21, 2027 · return Aug 28, 2027

SFO → SAT1 adulteconomyRound trip

8 flight options · 6 airlines

Nonstop flights

Sat, Aug 21 – Sat, Aug 28

United Airlines
6:25 pmSFO
3h 27m
Nonstop
11:52 pmSAT
United Airlines
7:20 amSAT
4h 2m
Nonstop
9:22 amSFO

Round-trip total · 1 adult · Taxes included

Sat, Aug 21 – Sat, Aug 28

United Airlines
4:15 pmSFO
3h 40m
Nonstop
9:55 pmSAT
United Airlines
7:20 amSAT
4h 2m
Nonstop
9:22 amSFO

Round-trip total · 1 adult · Taxes included

One-stop flights

Sat, Aug 21 – Sat, Aug 28

Frontier Airlines
2:22 pmSFO
5h 35m
LAS · 1h 5m
9:57 pmSAT
Frontier Airlines
2:44 pmSAT
5h 42m
LAS · 1h 1m
6:26 pmSFO

Round-trip total · 1 adult · Taxes included

Sat, Aug 21 – Sat, Aug 28

Alaska Airlines
6:00 amSFO
6h 31m
LAX · 2h 7m
2:31 pmSAT
Frontier Airlines
2:44 pmSAT
5h 42m
LAS · 1h 1m
6:26 pmSFO

Round-trip total · 1 adult · Taxes included

Sat, Aug 21 – Sat, Aug 28

Delta Air Lines
2:59 pmSFO
6h 35m
LAX · 2h 22m
11:34 pmSAT
Frontier Airlines
2:44 pmSAT
5h 42m
LAS · 1h 1m
6:26 pmSFO

Round-trip total · 1 adult · Taxes included

Sat, Aug 21 – Sat, Aug 28

Southwest Airlines
6:10 amSFO
6h
LAX · 1h 40m
2:10 pmSAT
Southwest Airlines
6:40 pmSAT
6h 15m
DEN · 1h
10:55 pmSFO

Round-trip total · 1 adult · Taxes included

Sat, Aug 21 – Sat, Aug 28

American Airlines
8:40 amSFO
6h 27m
PHX · 2h 8m
5:07 pmSAT
American Airlines
4:40 pmSAT
6h 23m
LAX · 1h 16m
9:03 pmSFO

Round-trip total · 1 adult · Taxes included

Sat, Aug 21 – Sat, Aug 28

Southwest Airlines
6:30 amSFO
5h 30m
SAN · 1h 10m
2:00 pmSAT
Southwest Airlines
6:40 pmSAT
6h 15m
DEN · 1h
10:55 pmSFO

Round-trip total · 1 adult · Taxes included

Make this trip yours

SFO ⇄ SAT

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 5, 2026 → Nov 8, 2026Nov 14, 2026 → Nov 21, 2026Nov 24, 2026 → Nov 29, 2026Dec 5, 2026 → Dec 12, 2026Dec 17, 2026 → Dec 20, 2026Dec 26, 2026 → Jan 2, 2027Jan 5, 2027 · One wayJan 16, 2027 → Jan 23, 2027Feb 5, 2027 → Feb 8, 2027Apr 3, 2027 → Apr 10, 2027Jun 26, 2027 → Jul 3, 2027Sep 17, 2027 → Sep 20, 2027
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)
2027-08-21 → 2027-08-28United AirlinesUA1554 / UA2421$440.002026-10-29T01:19:49Z
2027-08-21 → 2027-08-28Frontier AirlinesF92486 + F93418 / F93419 + F94157$245.002026-10-29T01:19:49Z
2027-08-21 → 2027-08-28Alaska Airlines / Frontier AirlinesAS2486 + AA6516 / F93419 + F94157$327.502026-10-29T01:19:49Z
2027-08-21 → 2027-08-28Delta Air Lines / Frontier AirlinesDL1715 + DL2686 / F93419 + F94157$332.502026-10-29T01:19:49Z
2027-08-21 → 2027-08-28Southwest AirlinesWN3847 + WN2410 / WN3773 + WN2844$380.002026-10-29T01:19:49Z
2027-08-21 → 2027-08-28American AirlinesAA2411 + AA2866 / AA4954 + AA3189$390.002026-10-29T01:19:49Z
2027-08-21 → 2027-08-28United AirlinesUA6036 / UA2421$440.002026-10-29T01:19:49Z
2027-08-21 → 2027-08-28Southwest AirlinesWN3853 + WN2893 / WN3773 + WN2844$380.002026-10-29T01:19:49Z

2027-08-21 → 2027-08-28 · $440.00

  • United Airlines UA1554: SFO 2027-08-21 18:25:00 → SAT 2027-08-21 23:52:00; nonstop; 207 minutes. Local airport times.
  • United Airlines UA2421: SAT 2027-08-28 07:20:00 → SFO 2027-08-28 09:22:00; nonstop; 242 minutes. Local airport times.

2027-08-21 → 2027-08-28 · $245.00

  • Frontier Airlines F92486 / F93418: SFO 2027-08-21 14:22:00 → SAT 2027-08-21 21:57:00; 1 stop(s) via LAS; 335 minutes. Local airport times.
    • F92486: SFO 2027-08-21 14:22:00 → LAS 2027-08-21 16:10:00; layover at LAS: 65 minutes.
    • F93418: LAS 2027-08-21 17:15:00 → SAT 2027-08-21 21:57:00.
  • Frontier Airlines F93419 / F94157: SAT 2027-08-28 14:44:00 → SFO 2027-08-28 18:26:00; 1 stop(s) via LAS; 342 minutes. Local airport times.
    • F93419: SAT 2027-08-28 14:44:00 → LAS 2027-08-28 15:41:00; layover at LAS: 61 minutes.
    • F94157: LAS 2027-08-28 16:42:00 → SFO 2027-08-28 18:26:00.

2027-08-21 → 2027-08-28 · $327.50

  • Alaska Airlines AS2486 / AA6516: SFO 2027-08-21 06:00:00 → SAT 2027-08-21 14:31:00; 1 stop(s) via LAX; 391 minutes. Local airport times.
    • AS2486: SFO 2027-08-21 06:00:00 → LAX 2027-08-21 07:29:00; layover at LAX: 127 minutes.
    • AA6516: LAX 2027-08-21 09:36:00 → SAT 2027-08-21 14:31:00.
  • Frontier Airlines F93419 / F94157: SAT 2027-08-28 14:44:00 → SFO 2027-08-28 18:26:00; 1 stop(s) via LAS; 342 minutes. Local airport times.
    • F93419: SAT 2027-08-28 14:44:00 → LAS 2027-08-28 15:41:00; layover at LAS: 61 minutes.
    • F94157: LAS 2027-08-28 16:42:00 → SFO 2027-08-28 18:26:00.

2027-08-21 → 2027-08-28 · $332.50

  • Delta Air Lines DL1715 / DL2686: SFO 2027-08-21 14:59:00 → SAT 2027-08-21 23:34:00; 1 stop(s) via LAX; 395 minutes. Local airport times.
    • DL1715: SFO 2027-08-21 14:59:00 → LAX 2027-08-21 16:24:00; layover at LAX: 142 minutes.
    • DL2686: LAX 2027-08-21 18:46:00 → SAT 2027-08-21 23:34:00.
  • Frontier Airlines F93419 / F94157: SAT 2027-08-28 14:44:00 → SFO 2027-08-28 18:26:00; 1 stop(s) via LAS; 342 minutes. Local airport times.
    • F93419: SAT 2027-08-28 14:44:00 → LAS 2027-08-28 15:41:00; layover at LAS: 61 minutes.
    • F94157: LAS 2027-08-28 16:42:00 → SFO 2027-08-28 18:26:00.

2027-08-21 → 2027-08-28 · $380.00

  • Southwest Airlines WN3847 / WN2410: SFO 2027-08-21 06:10:00 → SAT 2027-08-21 14:10:00; 1 stop(s) via LAX; 360 minutes. Local airport times.
    • WN3847: SFO 2027-08-21 06:10:00 → LAX 2027-08-21 07:45:00; layover at LAX: 100 minutes.
    • WN2410: LAX 2027-08-21 09:25:00 → SAT 2027-08-21 14:10:00.
  • Southwest Airlines WN3773 / WN2844: SAT 2027-08-28 18:40:00 → SFO 2027-08-28 22:55:00; 1 stop(s) via DEN; 375 minutes. Local airport times.
    • WN3773: SAT 2027-08-28 18:40:00 → DEN 2027-08-28 20:00:00; layover at DEN: 60 minutes.
    • WN2844: DEN 2027-08-28 21:00:00 → SFO 2027-08-28 22:55:00.

2027-08-21 → 2027-08-28 · $390.00

  • American Airlines AA2411 / AA2866: SFO 2027-08-21 08:40:00 → SAT 2027-08-21 17:07:00; 1 stop(s) via PHX; 387 minutes. Local airport times.
    • AA2411: SFO 2027-08-21 08:40:00 → PHX 2027-08-21 10:45:00; layover at PHX: 128 minutes.
    • AA2866: PHX 2027-08-21 12:53:00 → SAT 2027-08-21 17:07:00.
  • American Airlines AA4954 / AA3189: SAT 2027-08-28 16:40:00 → SFO 2027-08-28 21:03:00; 1 stop(s) via LAX; 383 minutes. Local airport times.
    • AA4954: SAT 2027-08-28 16:40:00 → LAX 2027-08-28 18:09:00; layover at LAX: 76 minutes.
    • AA3189: LAX 2027-08-28 19:25:00 → SFO 2027-08-28 21:03:00.

2027-08-21 → 2027-08-28 · $440.00

  • United Airlines UA6036: SFO 2027-08-21 16:15:00 → SAT 2027-08-21 21:55:00; nonstop; 220 minutes. Local airport times.
  • United Airlines UA2421: SAT 2027-08-28 07:20:00 → SFO 2027-08-28 09:22:00; nonstop; 242 minutes. Local airport times.

2027-08-21 → 2027-08-28 · $380.00

  • Southwest Airlines WN3853 / WN2893: SFO 2027-08-21 06:30:00 → SAT 2027-08-21 14:00:00; 1 stop(s) via SAN; 330 minutes. Local airport times.
    • WN3853: SFO 2027-08-21 06:30:00 → SAN 2027-08-21 08:05:00; layover at SAN: 70 minutes.
    • WN2893: SAN 2027-08-21 09:15:00 → SAT 2027-08-21 14:00:00.
  • Southwest Airlines WN3773 / WN2844: SAT 2027-08-28 18:40:00 → SFO 2027-08-28 22:55:00; 1 stop(s) via DEN; 375 minutes. Local airport times.
    • WN3773: SAT 2027-08-28 18:40:00 → DEN 2027-08-28 20:00:00; layover at DEN: 60 minutes.
    • WN2844: DEN 2027-08-28 21:00:00 → SFO 2027-08-28 22:55:00.

More dates for this route