Roundtrip New York to Ontario CA Airfares on American Airlines

These roundtrip airfares are available through May 31, 2026. Travel availability for departures from New York (LGA) and Ontario (ONT) is listed below. These basic economy fares include a personal item and carry-on bag, with no seat selection or changes.

Travel Availability

• Departs LGA: January 13, 21-22, 27, 31; February 3-4, 7-8, 10-11, 18-21, 23-26, 28; March 3-4, 10, 17, 24-25; April 7, 14, 21-22, 28-29; May 5-6
• Departs ONT: January 12-15, 24-31; February 1-4, 6-11, 14, 17-18, 23-25; March 2-4, 10-11, 17, 24, 31; April 7, 14-15, 21-22, 28; May 2, 5-6, 19