Our cheapest offers for flights to Ontario

Here you can compare cheap flights to Ontario (ONT) for either one-way or return trips. The following offers for Ontario were found on our flight search in the last days. Prices may vary depending on the flight route, date and availability.

Flights from San Francisco (SFO) to Ontario (ONT)

	Outbound	Return	Airlines	Baggage	Price
Best option San Francisco Ontario	Outbound 04/12/25 direct UA0794 01h 26min	Return 04/27/25 direct UA0277 01h 28min	United Airlines	?	$174
San Francisco Ontario	Outbound 04/12/25 1 Stopover (DEN) F93440, F91261 13h 41min	Return 04/27/25 direct F92677 01h 41min	Frontier Airlines		$179
San Francisco Ontario	Outbound 04/12/25 direct UA0794 01h 26min	Return 04/27/25 direct UA0277 01h 28min	United Airlines	?	$176

Flights from Seattle-Tacoma (SEA) to Ontario (ONT)

	Outbound	Return	Airlines	Baggage	Price
Seattle-Tacoma Ontario	Outbound 04/12/25 2 Stopovers (DEN, DFW) F93406, F92632, F91405 15h 07min	Return 04/27/25 1 Stopover (DEN) F91500, F93405 23h 45min	Frontier Airlines	?	$197
Seattle-Tacoma Ontario	Outbound 04/12/25 1 Stopover (DEN) F93406, F91499 07h 37min	Return 04/27/25 direct HA6288 02h 46min	Frontier Airlines		$262
Best option Seattle-Tacoma Ontario	Outbound 04/12/25 direct AS1003 02h 36min	Return 04/27/25 direct AS1091 02h 46min	Alaska Airlines	?	$266

Flights from Baltimore (BWI) to Ontario (ONT)

	Outbound	Return	Airlines	Baggage	Price
Baltimore Ontario	Outbound 04/12/25 1 Stopover (DFW) F94397, F91405 14h 05min	Return 04/27/25 2 Stopovers (DEN, ATL) F91500, F93294, F92634 37h 47min	Frontier Airlines	?	$293
Baltimore Ontario	Outbound 04/21/25 2 Stopovers (ATL, LAS) F91079, F91115, F91283 48h 50min	Return 05/19/25 2 Stopovers (DEN, ATL) F91500, F93600, F91080 29h 11min	Frontier Airlines	?	$305
Baltimore Ontario	Outbound 04/21/25 1 Stopover (DEN) F92705, F91261 26h 03min	Return 05/19/25 1 Stopover (DEN) F91500, F92706 13h 23min	Frontier Airlines		$302

Flights from Dallas (DFW) to Ontario (ONT)

	Outbound	Return	Airlines	Price
Dallas Ontario	Outbound 04/21/25 direct F91405 03h 26min	Return 05/19/25 1 Stopover (DEN) F91500, F91324 05h 35min	Frontier Airlines	$97
Dallas Ontario	Outbound 04/21/25 direct F91405 03h 26min	Return 05/19/25 1 Stopover (DEN) F91500, F91324 05h 35min	Frontier Airlines	$101
Best option Dallas Ontario	Outbound 04/12/25 direct F91405 03h 24min	Return 04/27/25 direct F91406 03h 14min	Frontier Airlines	$115

Flights from San Jose (SJC) to Ontario (ONT)

	Outbound	Return	Airlines	Baggage	Price
Best option San Jose Ontario	Outbound 04/12/25 1 Stopover (DEN) F94918, F91261 18h 42min	Return 04/27/25 1 Stopover (LAS) F94758, F94103 17h 15min	Frontier Airlines		$94
San Jose Ontario	Outbound 04/12/25 1 Stopover (DEN) F94918, F91261 18h 42min	Return 04/27/25 1 Stopover (DEN) F91500, F94917 10h 35min	Frontier Airlines	?	$188
San Jose Ontario	Outbound 04/12/25 1 Stopover (DEN) F94918, F91261 18h 42min	Return 04/27/25 1 Stopover (LAS) F94758, F94103 17h 15min	Frontier Airlines		$98

Flights from Sacramento (SMF) to Ontario (ONT)

	Outbound	Return	Airlines	Baggage	Price
Best option Sacramento Ontario	Outbound 04/12/25 1 Stopover (SFO) UA5655, UA0794 04h 26min	Return 04/27/25 1 Stopover (SFO) UA0277, UA5220 03h 26min	United Airlines	?	$262
Sacramento Ontario	Outbound 04/12/25 1 Stopover (SFO) UA5655, UA0794 04h 26min	Return 04/27/25 1 Stopover (SFO) UA0277, UA5220 03h 26min	United Airlines		$290
Sacramento Ontario	Outbound 04/12/25 1 Stopover (SFO) UA5655, UA0794 04h 26min	Return 04/27/25 1 Stopover (SFO) UA0277, UA5220 03h 26min	United Airlines	?	$264

Most frequent connection from Ontario

Alternative routes to United States

Flight New York - Miami from $ 120
Flight Los Angeles - New York from $ 57
Flight New York - Los Angeles from $ 91
Flight Los Angeles - Honolulu from $ 452
Flight Las Vegas - San Francisco from $ 70
Flight New York - Las Vegas from $ 130
Flight New York - San Francisco from $ 249
Flight San Francisco - Honolulu from $ 408
Flight Los Angeles - Las Vegas from $ 81
Flight New York - Orlando from $ 67

Flights to Ontario

Our cheapest offers for flights to Ontario

Ontario-CA

Most frequent connection from Ontario

Alternative routes to United States