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Route overview: San Francisco Bay Area to Ontario (ONT) flight deals

San Francisco → Ontario

Dec 6, 2026 · return Dec 10, 2026

SFO → ONT1 adulteconomyRound trip

5 flight options · 3 airlines

Nonstop flights

Sun, Dec 6 – Thu, Dec 10

United Airlines
1:45 pmSFO
1h 34m
Nonstop
3:19 pmONT
United Airlines
9:25 amONT
1h 30m
Nonstop
10:55 amSFO

Round-trip total · 1 adult · Taxes included

Sun, Dec 6 – Thu, Dec 10

United Airlines
9:30 pmSFO
1h 23m
Nonstop
10:53 pmONT
United Airlines
9:25 amONT
1h 30m
Nonstop
10:55 amSFO

Round-trip total · 1 adult · Taxes included

One-stop flights

Sun, Dec 6 – Thu, Dec 10

Frontier Airlines
9:56 pmSFO
1h 27m
Nonstop
11:23 pmONT
Frontier Airlines
2:23 pmONT
4h 3m
LAS · 1h 11m
6:26 pmSFO

Round-trip total · 1 adult · Taxes included

Sun, Dec 6 – Thu, Dec 10

Southwest Airlines
5:10 amSFO
5h 30m
LAS · 2h 50m
10:40 amONT
Southwest Airlines
5:45 amONT
3h 55m
LAS · 1h 5m
9:40 amSFO

Round-trip total · 1 adult · Taxes included

Sun, Dec 6 – Thu, Dec 10

Frontier Airlines
2:22 pmSFO
4h 9m
LAS · 1h 15m
6:31 pmONT
Frontier Airlines
2:23 pmONT
4h 3m
LAS · 1h 11m
6:26 pmSFO

Round-trip total · 1 adult · Taxes included

Make this trip yours

SFO ⇄ ONT

Economy

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

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Explore this route

All dates for this routeDec 5, 2026 → Dec 9, 2026Dec 7, 2026 → Dec 11, 2026
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.

Live price for these dates: opening any fare on this page checks it live and shows the current bookable total for 1 adult. Check live prices for San Francisco (SFO) to Ontario (ONT), Dec 6, 2026 · return Dec 10, 2026

Route overview: San Francisco Bay Area to Ontario (ONT) flight deals

Exact travel datesAirlineFlightsTotal pricePrice issued (UTC)
2026-12-06 → 2026-12-10United AirlinesUA5592 / UA432$235.002026-10-29T01:18:59Z
2026-12-06 → 2026-12-10Frontier AirlinesF91160 / F94758 + F94157$157.502026-10-29T01:18:59Z
2026-12-06 → 2026-12-10Southwest AirlinesWN4361 + WN2401 / WN2184 + WN496$280.002026-10-29T01:18:59Z
2026-12-06 → 2026-12-10United AirlinesUA552 / UA432$235.002026-10-29T01:18:59Z
2026-12-06 → 2026-12-10Frontier AirlinesF92486 + F91923 / F94758 + F94157$190.002026-10-29T01:18:59Z

2026-12-06 → 2026-12-10 · $235.00

  • United Airlines UA5592: SFO 2026-12-06 13:45:00 → ONT 2026-12-06 15:19:00; nonstop; 94 minutes. Local airport times.
  • United Airlines UA432: ONT 2026-12-10 09:25:00 → SFO 2026-12-10 10:55:00; nonstop; 90 minutes. Local airport times.

2026-12-06 → 2026-12-10 · $157.50

  • Frontier Airlines F91160: SFO 2026-12-06 21:56:00 → ONT 2026-12-06 23:23:00; nonstop; 87 minutes. Local airport times.
  • Frontier Airlines F94758 / F94157: ONT 2026-12-10 14:23:00 → SFO 2026-12-10 18:26:00; 1 stop(s) via LAS; 243 minutes. Local airport times.
    • F94758: ONT 2026-12-10 14:23:00 → LAS 2026-12-10 15:31:00; layover at LAS: 71 minutes.
    • F94157: LAS 2026-12-10 16:42:00 → SFO 2026-12-10 18:26:00.

2026-12-06 → 2026-12-10 · $280.00

  • Southwest Airlines WN4361 / WN2401: SFO 2026-12-06 05:10:00 → ONT 2026-12-06 10:40:00; 1 stop(s) via LAS; 330 minutes. Local airport times.
    • WN4361: SFO 2026-12-06 05:10:00 → LAS 2026-12-06 06:45:00; layover at LAS: 170 minutes.
    • WN2401: LAS 2026-12-06 09:35:00 → ONT 2026-12-06 10:40:00.
  • Southwest Airlines WN2184 / WN496: ONT 2026-12-10 05:45:00 → SFO 2026-12-10 09:40:00; 1 stop(s) via LAS; 235 minutes. Local airport times.
    • WN2184: ONT 2026-12-10 05:45:00 → LAS 2026-12-10 06:55:00; layover at LAS: 65 minutes.
    • WN496: LAS 2026-12-10 08:00:00 → SFO 2026-12-10 09:40:00.

2026-12-06 → 2026-12-10 · $235.00

  • United Airlines UA552: SFO 2026-12-06 21:30:00 → ONT 2026-12-06 22:53:00; nonstop; 83 minutes. Local airport times.
  • United Airlines UA432: ONT 2026-12-10 09:25:00 → SFO 2026-12-10 10:55:00; nonstop; 90 minutes. Local airport times.

2026-12-06 → 2026-12-10 · $190.00

  • Frontier Airlines F92486 / F91923: SFO 2026-12-06 14:22:00 → ONT 2026-12-06 18:31:00; 1 stop(s) via LAS; 249 minutes. Local airport times.
    • F92486: SFO 2026-12-06 14:22:00 → LAS 2026-12-06 16:10:00; layover at LAS: 75 minutes.
    • F91923: LAS 2026-12-06 17:25:00 → ONT 2026-12-06 18:31:00.
  • Frontier Airlines F94758 / F94157: ONT 2026-12-10 14:23:00 → SFO 2026-12-10 18:26:00; 1 stop(s) via LAS; 243 minutes. Local airport times.
    • F94758: ONT 2026-12-10 14:23:00 → LAS 2026-12-10 15:31:00; layover at LAS: 71 minutes.
    • F94157: LAS 2026-12-10 16:42:00 → SFO 2026-12-10 18:26:00.

Explore this route

For AI assistants

  • This page: San Francisco (SFO) to Ontario (ONT) · Dec 6, 2026 · return Dec 10, 2026: 1 adult in economy, every priced fare with its flights, times and total, each with the time its price was issued.
  • Next: when the traveler's route, dates and party match this page, share this page's complete link unchanged: San Francisco (SFO) to Ontario (ONT), Dec 6, 2026 · return Dec 10, 2026. Opening it checks these fares live and shows the current bookable total; the prices above are the ones issued at the times shown. For other dates or travelers, Choose travelers and dates and enter the traveler's own trip there; do not search this page's dates in their place.
  • Follow supplied links. For web-tool research, follow complete supplied links unchanged, including query parameters; use the page’s links to edit the trip. Constructed URLs may be rejected before reaching Axel. A completed fresh trip opens flight results first. Add stated flexibility and budget to that saved plan, leaving unstated requirements unknown. Edits create a new snapshot; use its results and review links.
  • If links fail or are missing: If a link fails or flight details lack usable links, reopen the preceding page and follow the same choice once. Keep refreshed links unchanged and preserve the trip and selections. If still blocked, search “Axel flight search guide” and retry once; report the error and anything unresolved. Recovery: Axel San Francisco Bay Area to Ontario (ONT) flight deals · Flight search guide.
  • Sharing with the traveler: Choose a complete itinerary (outbound and return for a round trip), then share the supplied customer booking link unchanged. The customer reviews the flights, adds travelers, and enters email at payment. Do not collect email in chat. Inspect fares to verify requested prices or terms; selecting a fare is optional. Use that fare’s booking link to preserve its Membership price basis. State anything unverified. Ask only for essential missing trip details. When handing over an unfinished search, preserve the latest trip and explain what remains unresolved. Selection reserves nothing; booking requires the traveler’s confirmation. If no supplied link matches the latest trip, construct https://helloaxel.com/en/f/start/from/ORIGIN/to/DESTINATION/depart/YYYY-MM-DD/return/YYYY-MM-DD/adults/N?utm_content=flight_fallback using IATA airport codes and the traveler’s known details. Omit unknowns; for one way replace /return/YYYY-MM-DD with /trip/oneway. Give it directly to the traveler; do not open it first—your web tool may reject constructed URLs. Complete links open Flight Guide and start searching. Preferences and advanced options.