United Flights from Ontario (ONT) starting at $ 72*
Fly from Ontario (ONT) and get United's best fares
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Ontario (ONT)to
San Francisco (SFO)01/26/25 - 01/26/25from$ 72*Viewed: 14 hours agoRoundtrip|Economy
Ontario (ONT)to
Orlando (MCO)02/16/25 - 02/21/25from$ 417*Viewed: 3 hours agoRoundtrip|Economy
Ontario (ONT)to
Boston (BOS)06/13/25 - 06/19/25from$ 336*Viewed: 2 hours agoRoundtrip|Economy
Ontario (ONT)to
Las Vegas (LAS)06/26/25 - 06/29/25from$ 717*Viewed: 16 hours agoRoundtrip|Economy
Ontario (ONT)to
Taipei (TPE)01/21/25 - 01/28/25from$ 854*Viewed: 9 hours agoRoundtrip|Economy
Ontario (ONT)to
Miami (MIA)03/12/25 - 03/14/25from$ 435*Viewed: 3 hours agoRoundtrip|Economy
Ontario (ONT)to
Seattle (SEA)02/05/25 - 02/07/25from$ 177*Viewed: 4 hours agoRoundtrip|Economy
Ontario (ONT)to
Agana, Guam (GUM)03/25/25 - 04/08/25from$ 1,867*Viewed: 26 minutes agoRoundtrip|Economy
Ontario (ONT)to
New York/Newark (EWR)02/04/25 - 02/10/25from$ 258*Viewed: 3 hours agoRoundtrip|Economy
Ontario (ONT)to
Madison (MSN)02/07/25 - 02/09/25from$ 289*Viewed: 1 hour agoRoundtrip|Economy
Ontario (ONT)to
Salt Lake City (SLC)02/26/25 - 02/28/25from$ 269*Viewed: 1 hour agoRoundtrip|Economy
Ontario (ONT)to
Vancouver (YVR)04/04/25 - 04/08/25from$ 397*Viewed: 9 hours agoRoundtrip|Economy
Ontario (ONT)to
Washington, D.C. (DCA)02/13/25 - 02/16/25from$ 327*Viewed: 2 hours agoRoundtrip|Economy
Ontario (ONT)to
Dallas (DFW)02/05/25 - 02/06/25from$ 254*Viewed: 55 minutes agoRoundtrip|Economy
Ontario (ONT)to
Chicago (ORD)04/25/25 - 04/30/25from$ 247*Viewed: 5 hours agoRoundtrip|Economy
Ontario (ONT)to
San Salvador (SAL)05/08/25 - 05/16/25from$ 395*Viewed: 7 hours agoRoundtrip|Economy
Ontario (ONT)to
Fort Lauderdale (FLL)04/06/25 - 04/12/25from$ 537*Viewed: 1 hour agoRoundtrip|Economy
Ontario (ONT)to
Atlanta (ATL)02/18/25 - 02/24/25from$ 417*Viewed: 17 hours agoRoundtrip|Economy
Ontario (ONT)to
Paris (CDG)03/18/25 - 04/01/25from$ 650*Viewed: 9 hours agoRoundtrip|Economy
Ontario (ONT)to
Cancun (CUN)02/27/25 - 03/01/25from$ 442*Viewed: 12 minutes agoRoundtrip|Economy
*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.
Airport information for your flight from Ontario (ONT)
Ontario is served by Ontario International Airport (ONT), located just two miles east of downtown. Access the airport’s free Wi-Fi before boarding your flight from Ontario.
Reaching the Ontario Airport
Local public buses connect from downtown Ontario. If your accommodations are located outside the city center, numerous Southern California operators offer bus service to the airport. For direct service, hire a taxi or pre-book an airport shuttle. The airport offers onsite car rentals and parking.
United popular flights from Ontario (ONT)
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From | To | Fare Type | Dates | Price |
|---|---|---|---|---|
| FromOntario (ONT) | ToSan Francisco (SFO) | Roundtrip | Economy | 03/01/25 - 03/02/25 | from $ 86* Viewed: 15 hours ago |
| FromOntario (ONT) | ToOrlando (MCO) | Roundtrip | Economy | 02/16/25 - 02/21/25 | from $ 417* Viewed: 3 hours ago |
| FromOntario (ONT) | ToLas Vegas (LAS) | Roundtrip | Economy | 03/06/25 - 03/09/25 | from $ 751* Viewed: 16 hours ago |
| FromOntario (ONT) | ToTaipei (TPE) | Roundtrip | Economy | 03/18/25 - 03/25/25 | from $ 854* Viewed: 9 hours ago |
| FromOntario (ONT) | ToMiami (MIA) | Roundtrip | Economy | 03/12/25 - 03/14/25 | from $ 435* Viewed: 3 hours ago |
| FromOntario (ONT) | ToSeattle (SEA) | Roundtrip | Economy | 03/05/25 - 03/10/25 | from $ 177* Viewed: 3 hours ago |
| FromOntario (ONT) | ToAgana, Guam (GUM) | Roundtrip | Economy | 03/25/25 - 04/08/25 | from $ 1,867* Viewed: 26 minutes ago |
| FromOntario (ONT) | ToNew York/Newark (EWR) | Roundtrip | Economy | 03/11/25 - 03/18/25 | from $ 287* Viewed: 17 minutes ago |
| FromOntario (ONT) | ToBoston (BOS) | Roundtrip | Economy | 03/24/25 - 03/31/25 | from $ 471* Viewed: 16 hours ago |
| FromOntario (ONT) | ToMadison (MSN) | Roundtrip | Economy | 04/02/25 - 04/04/25 | from $ 467* Viewed: 2 hours ago |
| FromOntario (ONT) | ToSalt Lake City (SLC) | Roundtrip | Economy | 02/26/25 - 02/28/25 | from $ 269* Viewed: 1 hour ago |
| FromOntario (ONT) | ToVancouver (YVR) | Roundtrip | Economy | 02/15/25 - 02/19/25 | from $ 397* Viewed: 9 hours ago |
| FromOntario (ONT) | ToAtlanta (ATL) | Roundtrip | Economy | 02/26/25 - 02/28/25 | from $ 417* Viewed: 5 hours ago |
| FromOntario (ONT) | ToSan Salvador (SAL) | Roundtrip | Economy | 02/21/25 - 02/26/25 | from $ 407* Viewed: 5 hours ago |
| FromOntario (ONT) | ToFort Lauderdale (FLL) | Roundtrip | Economy | 04/06/25 - 04/12/25 | from $ 537* Viewed: 1 hour ago |
| FromOntario (ONT) | ToParis (CDG) | Roundtrip | Economy | 03/12/25 - 03/26/25 | from $ 650* Viewed: 9 hours ago |
| FromOntario (ONT) | ToChicago (ORD) | Roundtrip | Economy | 03/26/25 - 03/30/25 | from $ 360* Viewed: 16 hours ago |
| FromOntario (ONT) | ToCancun (CUN) | Roundtrip | Economy | 02/27/25 - 03/01/25 | from $ 442* Viewed: 12 minutes ago |
| FromOntario (ONT) | ToSpokane (GEG) | Roundtrip | Economy | 03/11/25 - 03/18/25 | from $ 241* Viewed: 14 hours ago |
| FromOntario (ONT) | ToManagua (MGA) | Roundtrip | Economy | 03/10/25 - 03/17/25 | from $ 560* Viewed: 10 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.