Best Flights starting from $133
Economy
San Francisco (SFO)
Thu, Apr 16
Roundtrip
Ontario (ONT)
Mon, Apr 20
Economy
San Francisco (SFO)
Sun, Apr 19
Roundtrip
Ontario (ONT)
Thu, Apr 23
Economy
San Francisco (SFO)
Wed, Apr 15
Roundtrip
Ontario (ONT)
Sun, Apr 19
Economy
San Francisco (SFO)
Tue, Apr 14
Roundtrip
Ontario (ONT)
Sat, Apr 18
Economy
San Francisco (SFO)
Mon, Apr 13
Roundtrip
Ontario (ONT)
Fri, Apr 17
Economy
San Francisco (SFO)
Fri, Apr 17
Roundtrip
Ontario (ONT)
Tue, Apr 21
Other Destinations
San Francisco (SFO) to San Diego (Any) in April from $56
From $56
San Francisco (SFO) to Newark (EWR) in April from $110
From $110
San Francisco (SFO) to Honolulu (HNL) in April from $237
From $237
San Francisco (SFO) to New York (JFK) in April from $239
From $239
San Francisco (SFO) to Denver (Any) in April from $244
From $244
San Francisco (SFO) to San Salvador (SAL) in April from $245
From $245
Flights from Other Cities
Myrtle Beach (Any) to Ontario (ONT) in April from $393
From $393
Cleveland (CLE) to Ontario (ONT) in May from $219
From $219
Boise (BOI) to Ontario (ONT) in May from $257
From $257
Tampa (TPA) to Ontario (ONT) in May from $275
From $275
Cleveland (CLE) to Ontario (ONT) in June from $219
From $219
Austin (AUS) to Ontario (ONT) in June from $466
From $466
✈️ Flight Guide: San Francisco (SFO) → Ontario (ONT)
Complete travel information for your April journey
Departing from San Francisco (SFO) FAQs
Ontario International Airport (ONT) serves major legacy and low-cost carriers offering competitive economy fares, including American Airlines, Delta, Southwest, and select international carriers on seasonal routes. To find the cheapest economy tickets, compare fares across these carriers and check low-cost carriers' flash sales and fare alerts. Use price comparison tools and flexible-date searches for the best deals.
For domestic economy departures from Ontario International Airport (ONT), arrive at least 90 minutes before your scheduled departure to allow time for check-in, security screening, and potential lines during peak travel times. During busy holiday periods or if you have checked luggage, consider arriving 2 hours early to avoid stress and secure your seat.
Yes, Ontario International Airport (ONT) offers direct economy flights to popular destinations such as Las Vegas, Phoenix, and several California hubs, though availability varies seasonally. Check airline schedules and book early in the low-demand months for cheaper economy fares and greater availability of nonstop routes.
To find the cheapest economy flights from Ontario International Airport (ONT) in July, set fare alerts, search flexible dates surrounding major holidays, and consider mid-week departures (Tuesday–Thursday) for lower prices. July sees summer demand to beach and vacation destinations, so booking 6–10 weeks in advance often secures the best discounted economy fares.
Ontario International Airport (ONT) offers ride-shares, taxis, shuttles, rental cars, and local bus connections to Riverside and San Bernardino. For budget travelers seeking cheap transfers, shared shuttles and public transit are the most economical; pre-booked shuttle services often provide discounts and meet-and-greet options at the arrivals curb.
Yes, Ontario International Airport (ONT) often adjusts schedules seasonally, adding routes or increasing frequency during December holiday travel, which typically drives economy fares higher. To save, book early, use fare comparison tools, and consider flying on off-peak days such as Christmas Eve or midweek dates around the holidays.
Arriving at Ontario (ONT) FAQs
'Cheapest Economy Fare (ECO)' is a generic label representing the lowest-priced economy-class ticket for a given route, often sold under basic economy or fare-restricted economy buckets. To book, compare fares on airline websites and OTAs, sign up for fare alerts, and select flexible dates. Be aware that the cheapest economy fares may include restrictions such as no seat selection and limited or no checked baggage.
Most Cheapest Economy Fare (ECO) or basic economy tickets exclude checked baggage and complimentary seat selection; policies vary by carrier. Always review the fare rules before purchase and consider the total cost including baggage and seat fees to determine if a slightly higher fare class offers better value.
Travelers booking the Cheapest Economy Fare (ECO) often fly into high-traffic hubs and popular cities such as New York (JFK/LGA), Los Angeles (LAX), Chicago (ORD), Miami (MIA), and Dallas (DFW). These hubs increase route competition and frequently feature low economy fares; connecting through these cities can unlock cheaper travel options to final destinations.
Cheapest Economy Fare (ECO) prices typically spike in December due to holiday travel demand, with the highest fares around Christmas and New Year's. To minimize cost, book several months in advance, be flexible on travel dates, and consider flying outside peak days or through less congested arrival airports.
For international arrivals, secure Cheapest Economy Fare (ECO) by booking early, using fare comparison tools, considering nearby alternative arrival airports, and traveling mid-week. Sign up for airline newsletters and use incognito browsing when searching to compare market prices without cached results influencing fares.
Cheapest Economy Fare (ECO) tickets are usually non-refundable and have strict change fees or limited rebooking options, though some carriers temporarily relaxed policies. Always check the fare rules at booking and consider purchasing flexible economy or travel insurance if you need changeable arrival plans.
1.0.2601.30
Events and Festivals — How They Impact Cheapest Economy Fares at ONT
Large events and festivals such as music festivals, sports playoffs, and major conventions raise demand and push up the cheapest economy fares from Ontario International Airport (ONT). Examples include major Los Angeles-area events and seasonal conferences that drive traffic across Riverside and San Bernardino. To avoid premium pricing, book well in advance or travel outside event windows. If attending an event, consider arriving a day early and departing the day after to avoid peak pricing and crowded schedules.
Best Time to Fly from Ontario International Airport (ONT) for Cheapest Economy Fares
The best time to fly from Ontario International Airport (ONT) for the cheapest economy fare is typically mid-week (Tuesday–Thursday) and during off-peak hours (late night or early morning). Off-season months like January and September generally offer lower pricing, while peak months like July and December are most expensive. Book 1–3 months ahead for domestic economy trips and 2–6 months ahead for popular long-haul routes. Use flexible-date calendars and fare alerts to identify the optimal booking window.
Direct vs Connecting Flights — Ontario International Airport (ONT) Cheapest Economy Choices
Choosing between direct and connecting flights from Ontario International Airport (ONT) affects price, convenience, and travel time. Direct flights are faster but often cost more; connecting flights can produce the cheapest economy fares by leveraging competition at hub airports. If you prioritize price over speed, search for one-stop routings through competitive hubs like Los Angeles, Phoenix, or Las Vegas. Factor in connection buffers and potential delays when opting for the cheapest connecting economy itineraries.
Airline Comparison for Cheapest Economy — Ontario International Airport (ONT) Options
At Ontario International Airport (ONT), low-cost carriers like Southwest and select ultra-low-cost airlines often offer highly competitive cheapest economy fares, while legacy carriers provide more flexible ticket options and loyalty benefits. Compare total trip costs after adding baggage and seat fees to determine real value. Review frequent flyer and credit card benefits for potential savings, and use OTA comparisons to surface limited-time airline sales and bundled packages.
Seasonal Travel Tips — Save on Cheapest Economy Fares from ONT
Seasonal travel impacts pricing: fly in shoulder seasons (January–March, September–October) to find the cheapest economy fares from Ontario International Airport (ONT). Pack carry-on only to avoid baggage fees common with the cheapest economy classes, and travel mid-week to reduce costs. Consider alternative nearby airports and flexible routing options, and sign up for fare alerts ahead of seasonal sales. Use location-based keywords like 'cheap flights from Ontario International Airport (ONT) to Las Vegas' when searching to surface targeted deals.
Flight Time and Schedules — Ontario International Airport (ONT) Routes to ECO
Flight times from Ontario International Airport (ONT) to primary hubs and ECO destinations vary by route — short-haul flights to Las Vegas or Phoenix average 1–2 hours, while cross-country flights to New York or Miami can take 4–6 hours. Schedule frequency often affects economy pricing: higher-frequency routes usually produce more competitive cheapest economy fares. For best pricing, search early morning and late-night flights, when demand is lower. Check airline timetables and seasonal schedule changes that affect seat availability and cheapest economy pricing.
Cheap Flights Guide — Ontario International Airport (ONT) to Cheapest Economy Fare (ECO)
To find cheap flights from Ontario International Airport (ONT) to destinations under the Cheapest Economy Fare (ECO) umbrella, combine flexible-date searches, fare alerts, and alternative airport comparisons. Use keywords like 'cheap flights ONT', 'budget airfare', and 'discount economy fares' when searching. Compare low-cost carriers and legacy airlines, weigh baggage fees, and bundle hotel or car rental packages for added savings. CTA: Search cheap economy flights now and sign up for fare alerts to capture limited-time deals.