Ontario, CA 3x per day Aug. 20 Reno 3x per day Aug. 20 Sacramento 4x per day Aug. 20 Dallas-Fort Worth 2x per day Oct. 1 Denver 2x per day Oct. 1 Fresno, CA 2x per day Oct. 1 Medford, OR 2x per day Oct. 1 Phoenix
Get Frontier Airlines cheap flights from Ontario to Portland. Book one-way or return flight from ONT → PDX with Frontier Airlines (F9) deals & save!