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Ontario → Chicago

Dec 21, 2026 · one way

ONT → ORD1 adulteconomyOne way

8 flight options · 4 airlines

Nonstop flights

Mon, Dec 21 · One way

United Airlines
7:00 amONT
4h
Nonstop
1:00 pmORD

One-way total · 1 adult · Taxes included

Mon, Dec 21 · One way

United Airlines
11:52 pmONT
3h 54m
Nonstop
5:46 am+1ORD

One-way total · 1 adult · Taxes included

One-stop flights

Mon, Dec 21 · One way

Frontier Airlines
8:35 pmONT
6h 38m
LAS · 1h 45m
5:13 am+1ORD

One-way total · 1 adult · Taxes included

Mon, Dec 21 · One way

American Airlines
12:51 pmONT
7h 14m
DFW · 1h 52m
10:05 pmORD

One-way total · 1 adult · Taxes included

Mon, Dec 21 · One way

Delta Air Lines
1:11 pmONT
7h 16m
SLC · 2h 11m
10:27 pmORD

One-way total · 1 adult · Taxes included

Mon, Dec 21 · One way

United Airlines
1:40 pmONT
8h 19m
DEN · 3h 30m
11:59 pmORD

One-way total · 1 adult · Taxes included

Mon, Dec 21 · One way

United Airlines
5:45 amONT
7h 6m
IAH · 1h 4m
2:51 pmORD

One-way total · 1 adult · Taxes included

Mon, Dec 21 · One way

Delta Air Lines
7:05 amONT
8h 1m
ATL · 1h 40m
5:06 pmORD

One-way total · 1 adult · Taxes included

Make this trip yours

ONT ⇄ ORD

Economy

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

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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)
2026-12-21 · one wayUnited AirlinesUA2226$294.002026-10-29T01:52:33Z
2026-12-21 · one wayFrontier AirlinesF94206 + F92146$154.002026-10-29T01:52:33Z
2026-12-21 · one wayAmerican AirlinesAA2198 + AA572$273.002026-10-29T01:52:33Z
2026-12-21 · one wayDelta Air LinesDL1787 + DL2413$287.002026-10-29T01:52:33Z
2026-12-21 · one wayUnited AirlinesUA1813$294.002026-10-29T01:52:33Z
2026-12-21 · one wayUnited AirlinesUA1263 + UA1787$266.002026-10-29T01:52:33Z
2026-12-21 · one wayUnited AirlinesUA2267 + UA2417$266.002026-10-29T01:52:33Z
2026-12-21 · one wayDelta Air LinesDL409 + DL2738$287.002026-10-29T01:52:33Z

2026-12-21 · one way · $294.00

  • United Airlines UA2226: ONT 2026-12-21 07:00:00 → ORD 2026-12-21 13:00:00; nonstop; 240 minutes. Local airport times.

2026-12-21 · one way · $154.00

  • Frontier Airlines F94206 / F92146: ONT 2026-12-21 20:35:00 → ORD 2026-12-22 05:13:00; 1 stop(s) via LAS; 398 minutes. Local airport times.
    • F94206: ONT 2026-12-21 20:35:00 → LAS 2026-12-21 21:44:00; layover at LAS: 105 minutes.
    • F92146: LAS 2026-12-21 23:29:00 → ORD 2026-12-22 05:13:00.

2026-12-21 · one way · $273.00

  • American Airlines AA2198 / AA572: ONT 2026-12-21 12:51:00 → ORD 2026-12-21 22:05:00; 1 stop(s) via DFW; 434 minutes. Local airport times.
    • AA2198: ONT 2026-12-21 12:51:00 → DFW 2026-12-21 17:44:00; layover at DFW: 112 minutes.
    • AA572: DFW 2026-12-21 19:36:00 → ORD 2026-12-21 22:05:00.

2026-12-21 · one way · $287.00

  • Delta Air Lines DL1787 / DL2413: ONT 2026-12-21 13:11:00 → ORD 2026-12-21 22:27:00; 1 stop(s) via SLC; 436 minutes. Local airport times.
    • DL1787: ONT 2026-12-21 13:11:00 → SLC 2026-12-21 16:04:00; layover at SLC: 131 minutes.
    • DL2413: SLC 2026-12-21 18:15:00 → ORD 2026-12-21 22:27:00.

2026-12-21 · one way · $294.00

  • United Airlines UA1813: ONT 2026-12-21 23:52:00 → ORD 2026-12-22 05:46:00; nonstop; 234 minutes. Local airport times.

2026-12-21 · one way · $266.00

  • United Airlines UA1263 / UA1787: ONT 2026-12-21 13:40:00 → ORD 2026-12-21 23:59:00; 1 stop(s) via DEN; 499 minutes. Local airport times.
    • UA1263: ONT 2026-12-21 13:40:00 → DEN 2026-12-21 16:55:00; layover at DEN: 210 minutes.
    • UA1787: DEN 2026-12-21 20:25:00 → ORD 2026-12-21 23:59:00.

2026-12-21 · one way · $266.00

  • United Airlines UA2267 / UA2417: ONT 2026-12-21 05:45:00 → ORD 2026-12-21 14:51:00; 1 stop(s) via IAH; 426 minutes. Local airport times.
    • UA2267: ONT 2026-12-21 05:45:00 → IAH 2026-12-21 10:56:00; layover at IAH: 64 minutes.
    • UA2417: IAH 2026-12-21 12:00:00 → ORD 2026-12-21 14:51:00.

2026-12-21 · one way · $287.00

  • Delta Air Lines DL409 / DL2738: ONT 2026-12-21 07:05:00 → ORD 2026-12-21 17:06:00; 1 stop(s) via ATL; 481 minutes. Local airport times.
    • DL409: ONT 2026-12-21 07:05:00 → ATL 2026-12-21 14:10:00; layover at ATL: 100 minutes.
    • DL2738: ATL 2026-12-21 15:50:00 → ORD 2026-12-21 17:06:00.

More dates for this route