Flights from Chicago to Ontario from $ 235*
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1 Passenger, Economy
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Featured daily fares for flights from Chicago (ORD) to Ontario (ONT)
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More United deals on Chicago (ORD) to Ontario (ONT) flights
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From | To | Fare Type | Dates | Price |
|---|---|---|---|---|
| Chicago (ORD) | Ontario (ONT) | Roundtrip | Economy | 07/29/26 - 08/05/26 | from $ 235 Viewed: 19 hours ago |
| Chicago (ORD) | Ontario (ONT) | Roundtrip | Economy | 07/21/26 - 07/28/26 | from $ 235 Viewed: 19 hours ago |
| Chicago (ORD) | Ontario (ONT) | Roundtrip | Economy | 07/28/26 - 08/04/26 | from $ 235 Viewed: 19 hours ago |
| Chicago (ORD) | Ontario (ONT) | Roundtrip | Economy | 05/27/26 - 06/02/26 | from $ 239 Viewed: 19 hours ago |
| Chicago (ORD) | Ontario (ONT) | Roundtrip | Economy | 07/08/26 - 07/15/26 | from $ 251 Viewed: 19 hours ago |
| Chicago (ORD) | Ontario (ONT) | Roundtrip | Economy | 05/27/26 - 05/30/26 | from $ 253 Viewed: 19 hours ago |
| Chicago (ORD) | Ontario (ONT) | Roundtrip | Economy | 05/27/26 - 06/03/26 | from $ 267 Viewed: 19 hours ago |
| Chicago (ORD) | Ontario (ONT) | Roundtrip | Economy | 08/05/26 - 08/12/26 | from $ 269 Viewed: 19 hours ago |
*Prices have been available for round trips within the last 48 hours and may not be currently available. For Economy class, fares listed may be Basic Economy, which is our most restrictive fare option and subject to additional restrictions. Additional baggage charges and fees for other optional service may apply. Other terms and conditions may apply. Schedules are subject to change without notice.
