Ontario (ONT) to Chicago (MDW), Dec 18–20, 2026: from $208 one way

Ontario (ONT) to Chicago (MDW), Dec 18–20, 2026: from $208 one way on Axel, checked Oct 29, 2026. Lowest published fare: $208 one way, Axel-exclusive, Southwest Airlines, 1 stop, Dec 18, 2026, 1 adult, economy, checked Oct 29, 2026. Flights for 1 adult in economy. Prices are total for all travelers in USD, including required taxes. Basic economy may apply.

See flights for these dates: each price link opens AI flight search for that row's exact dates and travelers. Select the complete itinerary there.

Route overview: Los Angeles to Chicago (MDW) flight deals

2026-12-18 · one way · Axel-exclusive $234.00

• Southwest Airlines WN3310: ONT 2026-12-18 23:55:00 → MDW 2026-12-19 05:40:00; nonstop; 225 minutes. Local airport times.

2026-12-20 · one way · Axel-exclusive $253.50

• Delta Air Lines DL409 / DL1728: ONT 2026-12-20 07:05:00 → MDW 2026-12-20 16:18:00; 1 stop(s) via ATL; 433 minutes. Local airport times.
  • DL409: ONT 2026-12-20 07:05:00 → ATL 2026-12-20 14:10:00; layover at ATL: 75 minutes.
  • DL1728: ATL 2026-12-20 15:25:00 → MDW 2026-12-20 16:18:00.

2026-12-19 · one way · Axel-exclusive $234.00

• Southwest Airlines WN3310: ONT 2026-12-19 23:55:00 → MDW 2026-12-20 05:40:00; nonstop; 225 minutes. Local airport times.

2026-12-20 · one way · Axel-exclusive $234.00

• Southwest Airlines WN3310: ONT 2026-12-20 23:55:00 → MDW 2026-12-21 05:40:00; nonstop; 225 minutes. Local airport times.

2026-12-19 · one way · Axel-exclusive $208.00

• Southwest Airlines WN3301 / WN1699: ONT 2026-12-19 08:45:00 → MDW 2026-12-19 17:55:00; 1 stop(s) via DEN; 430 minutes. Local airport times.
  • WN3301: ONT 2026-12-19 08:45:00 → DEN 2026-12-19 11:55:00; layover at DEN: 165 minutes.
  • WN1699: DEN 2026-12-19 14:40:00 → MDW 2026-12-19 17:55:00.

2026-12-18 · one way · Axel-exclusive $208.00

• Southwest Airlines WN1729 / WN651: ONT 2026-12-18 11:25:00 → MDW 2026-12-18 21:05:00; 1 stop(s) via BNA; 460 minutes. Local airport times.
  • WN1729: ONT 2026-12-18 11:25:00 → BNA 2026-12-18 17:05:00; layover at BNA: 145 minutes.
  • WN651: BNA 2026-12-18 19:30:00 → MDW 2026-12-18 21:05:00.

2026-12-18 · one way · Axel-exclusive $208.00

• Southwest Airlines WN1903 / WN887: ONT 2026-12-18 08:40:00 → MDW 2026-12-18 17:25:00; 1 stop(s) via LAS; 405 minutes. Local airport times.
  • WN1903: ONT 2026-12-18 08:40:00 → LAS 2026-12-18 09:40:00; layover at LAS: 130 minutes.
  • WN887: LAS 2026-12-18 11:50:00 → MDW 2026-12-18 17:25:00.

2026-12-20 · one way · Axel-exclusive $208.00

• Southwest Airlines WN1903 / WN887: ONT 2026-12-20 08:40:00 → MDW 2026-12-20 17:25:00; 1 stop(s) via LAS; 405 minutes. Local airport times.
  • WN1903: ONT 2026-12-20 08:40:00 → LAS 2026-12-20 09:40:00; layover at LAS: 130 minutes.
  • WN887: LAS 2026-12-20 11:50:00 → MDW 2026-12-20 17:25:00.

2026-12-18 · one way · Axel-exclusive $208.00

• Southwest Airlines WN3224 / WN2674: ONT 2026-12-18 15:50:00 → MDW 2026-12-19 01:35:00; 1 stop(s) via PHX; 465 minutes. Local airport times.
  • WN3224: ONT 2026-12-18 15:50:00 → PHX 2026-12-18 18:10:00; layover at PHX: 195 minutes.
  • WN2674: PHX 2026-12-18 21:25:00 → MDW 2026-12-19 01:35:00.

2026-12-19 · one way · Axel-exclusive $208.00

• Southwest Airlines WN1903 / WN887: ONT 2026-12-19 08:40:00 → MDW 2026-12-19 17:25:00; 1 stop(s) via LAS; 405 minutes. Local airport times.
  • WN1903: ONT 2026-12-19 08:40:00 → LAS 2026-12-19 09:40:00; layover at LAS: 130 minutes.
  • WN887: LAS 2026-12-19 11:50:00 → MDW 2026-12-19 17:25:00.

2026-12-19 · one way · Axel-exclusive $208.00

• Southwest Airlines WN3224 / WN2674: ONT 2026-12-19 15:50:00 → MDW 2026-12-20 01:35:00; 1 stop(s) via PHX; 465 minutes. Local airport times.
  • WN3224: ONT 2026-12-19 15:50:00 → PHX 2026-12-19 18:10:00; layover at PHX: 195 minutes.
  • WN2674: PHX 2026-12-19 21:25:00 → MDW 2026-12-20 01:35:00.

2026-12-18 · one way · Axel-exclusive $208.00

• Southwest Airlines WN3298 / WN295: ONT 2026-12-18 07:50:00 → MDW 2026-12-18 17:20:00; 1 stop(s) via AUS; 450 minutes. Local airport times.
  • WN3298: ONT 2026-12-18 07:50:00 → AUS 2026-12-18 12:35:00; layover at AUS: 135 minutes.
  • WN295: AUS 2026-12-18 14:50:00 → MDW 2026-12-18 17:20:00.

2026-12-20 · one way · Axel-exclusive $208.00

• Southwest Airlines WN3301 / WN1699: ONT 2026-12-20 08:45:00 → MDW 2026-12-20 17:55:00; 1 stop(s) via DEN; 430 minutes. Local airport times.
  • WN3301: ONT 2026-12-20 08:45:00 → DEN 2026-12-20 11:55:00; layover at DEN: 165 minutes.
  • WN1699: DEN 2026-12-20 14:40:00 → MDW 2026-12-20 17:55:00.

2026-12-20 · one way · Axel-exclusive $208.00

• Southwest Airlines WN3298 / WN295: ONT 2026-12-20 07:50:00 → MDW 2026-12-20 17:20:00; 1 stop(s) via AUS; 450 minutes. Local airport times.
  • WN3298: ONT 2026-12-20 07:50:00 → AUS 2026-12-20 12:35:00; layover at AUS: 135 minutes.
  • WN295: AUS 2026-12-20 14:50:00 → MDW 2026-12-20 17:20:00.

2026-12-19 · one way · Axel-exclusive $208.00

• Southwest Airlines WN1729 / WN651: ONT 2026-12-19 11:25:00 → MDW 2026-12-19 21:05:00; 1 stop(s) via BNA; 460 minutes. Local airport times.
  • WN1729: ONT 2026-12-19 11:25:00 → BNA 2026-12-19 17:05:00; layover at BNA: 145 minutes.
  • WN651: BNA 2026-12-19 19:30:00 → MDW 2026-12-19 21:05:00.

2026-12-19 · one way · Axel-exclusive $208.00

• Southwest Airlines WN3298 / WN295: ONT 2026-12-19 07:50:00 → MDW 2026-12-19 17:20:00; 1 stop(s) via AUS; 450 minutes. Local airport times.
  • WN3298: ONT 2026-12-19 07:50:00 → AUS 2026-12-19 12:35:00; layover at AUS: 135 minutes.
  • WN295: AUS 2026-12-19 14:50:00 → MDW 2026-12-19 17:20:00.

2026-12-20 · one way · Axel-exclusive $208.00

• Southwest Airlines WN3224 / WN2674: ONT 2026-12-20 15:50:00 → MDW 2026-12-21 01:35:00; 1 stop(s) via PHX; 465 minutes. Local airport times.
  • WN3224: ONT 2026-12-20 15:50:00 → PHX 2026-12-20 18:10:00; layover at PHX: 195 minutes.
  • WN2674: PHX 2026-12-20 21:25:00 → MDW 2026-12-21 01:35:00.

2026-12-20 · one way · Axel-exclusive $208.00

• Southwest Airlines WN1729 / WN651: ONT 2026-12-20 11:25:00 → MDW 2026-12-20 21:05:00; 1 stop(s) via BNA; 460 minutes. Local airport times.
  • WN1729: ONT 2026-12-20 11:25:00 → BNA 2026-12-20 17:05:00; layover at BNA: 145 minutes.
  • WN651: BNA 2026-12-20 19:30:00 → MDW 2026-12-20 21:05:00.

2026-12-18 · one way · Axel-exclusive $208.00

• Southwest Airlines WN3301 / WN1699: ONT 2026-12-18 08:45:00 → MDW 2026-12-18 17:55:00; 1 stop(s) via DEN; 430 minutes. Local airport times.
  • WN3301: ONT 2026-12-18 08:45:00 → DEN 2026-12-18 11:55:00; layover at DEN: 165 minutes.
  • WN1699: DEN 2026-12-18 14:40:00 → MDW 2026-12-18 17:55:00.

2026-12-19 · one way · Axel-exclusive $253.50

• Delta Air Lines DL409 / DL1728: ONT 2026-12-19 07:05:00 → MDW 2026-12-19 16:18:00; 1 stop(s) via ATL; 433 minutes. Local airport times.
  • DL409: ONT 2026-12-19 07:05:00 → ATL 2026-12-19 14:10:00; layover at ATL: 75 minutes.
  • DL1728: ATL 2026-12-19 15:25:00 → MDW 2026-12-19 16:18:00.

2026-12-18 · one way · Axel-exclusive $253.50

• Delta Air Lines DL409 / DL1728: ONT 2026-12-18 07:05:00 → MDW 2026-12-18 16:18:00; 1 stop(s) via ATL; 433 minutes. Local airport times.
  • DL409: ONT 2026-12-18 07:05:00 → ATL 2026-12-18 14:10:00; layover at ATL: 75 minutes.
  • DL1728: ATL 2026-12-18 15:25:00 → MDW 2026-12-18 16:18:00.

Travelers: prices on this page are totals for 1 adult. For a different party, open this trip for 2 adults · 3 adults · 4 adults · 2 adults + 1 child · 2 adults + 2 children; each link opens AI flight search for these dates and those travelers, and the customer link to share comes from those results.

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