Ontario
Last updated on Friday 07-24-2026 at 05:00 AM, the fares mentioned above are for flight tickets and inclusive of fuel surcharges, service fee and taxes. Based on historical data, these fares are subject to change without prior notice and cannot be guaranteed at the time of booking. Kindly go through our terms and conditions before booking.
Don't see your travel dates?
Flight prices fluctuate based on real-time availability. Use our search tool above to find the latest fares for your specific departure and return dates.
Search More Deals ↑Cheap Flight Tickets to Ontario (ONT) – Your Seamless Entry to Southern California
Ontario International Airport (ONT) is the preferred alternative for travelers looking to avoid the heavy congestion of LAX. Located in the heart of the Inland Empire, ONT offers a modern and efficient environment just 35 miles east of downtown Los Angeles. Whether you are visiting for the world-class shopping at Ontario Mills, attending a convention, or heading to the nearby mountain resorts, finding cheap flights to Ontario is simple with the right planning. This guide provides essential tips and route information to help you secure the best ONT flight deals.
1. Book Your Ontario Flight Strategically
As one of the fastest-growing airports in the region, Ontario sees high competition among airlines, which often leads to lower fares for travelers. To land the best rates, aim to book your tickets at least 3 to 5 weeks in advance. For those traveling from Western hubs like Seattle, Denver, or Phoenix, carriers frequently offer promotional fares for midweek departures.
Pro Tip: Late spring and early fall are often the "sweet spot" months for Ontario travel. During these times, airfare averages are lower than the summer peak, and the weather is ideal for exploring regional parks and outdoor attractions.
2. Explore Ontario’s Top Attractions
Ontario is a central hub with a variety of local experiences that highlight the heritage and entertainment of the Inland Empire:
- Ontario Mills: California's largest outlet and value retail shopping destination, featuring over 200 stores and various dining options.
- Graber Olive House: A historic site dating back to 1894 where visitors can tour the cannery and sample gourmet olives and local products.
- Cucamonga-Guasti Regional Park: A 150-acre park offering lakes for fishing, swimming complexes, and sprawling picnic areas.
- Toyota Arena: The premier venue for major concerts, sporting events, and family shows in Southern California.
3. Major Airlines and Popular Routes
Ontario is served by every major domestic carrier, including Southwest, American, Delta, United, and Frontier. The airport offers frequent nonstop service to dozens of major hubs:
- Domestic Hubs: High-frequency connections to Dallas (DFW), Denver (DEN), Phoenix (PHX), Las Vegas (LAS), and Seattle (SEA).
- Intrastate Travel: Convenient "shuttle" routes from Sacramento (SMF), San Jose (SJC), and Oakland (OAK).
- International Options: Direct flights to Mexico via Volaris and transpacific service to Taipei via China Airlines and Starlux.
4. Leverage Regional Airport Alternatives
If you are exploring different parts of Southern California, comparing ONT with nearby regional airports can help you find the most convenient and cost-effective route:
- Cheap Flights to Santa Ana (SNA) – The best choice for visitors heading to Disneyland or Newport Beach.
- Flights to Long Beach (LGB) – A relaxed coastal gateway with numerous low-cost carrier options.
- Regional Travel: Flights to San Luis Obispo (SBP) – Perfect for travelers heading toward the Central Coast wine country.
Book Your Ontario Trip with ScannerFlight
At ScannerFlight, we monitor real-time data to bring you the latest ONT flight deals. From flexible fare searches to last-minute discounts, our platform is designed to make your Southern California travel simple and affordable. Book your Ontario flight today and enjoy the convenience of the Inland Empire's premier gateway!
Ontario Travel & Booking FAQ
Q. Does ScannerFlight offer a price match guarantee?
Our engine scans thousands of data points to find fares starting at $197. We strive to provide the most competitive rates available online.
Q. Why book with ScannerFlight?
We provide 24/7 support and exclusive pricing data for Ontario that you will not find on standard, non-specialized search engines.
Q. Why do flight prices change so often?
Airline pricing is dynamic. If you see a low rate like $197, we recommend locking it in immediately as availability changes in real-time.
Q. Do I need travel insurance for my trip?
We suggest adding travel protection to your booking. It ensures you are covered for a variety of travel-related risks and delays.
Q. How can I save money on last-minute flights?
To save on late bookings to Ontario, try flying during off-peak hours. We often see the $197 rate become available for late-night or early-morning departures.
Q. Can I book a flight and hotel together?
By focusing 100% on flight deals, we ensure you get the absolute lowest fare (currently $197) without the hidden markups often found in hotel bundles.
Q. How do I find the best flight deals to Ontario?
By comparing multiple airlines on ScannerFlight, you can quickly scan the 8 available routes to find the most competitive rates.
Q. Are baggage fees included in the shown price?
Standard fares often include a carry-on, but checked bag fees vary by airline. Check the 'Fare Rules' section for specific baggage details.