Best Flights starting from $117
from$117economy
San Jose (SJC)
Sun, May 3
One-way
Ontario (ONT)
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from$196economy
San Jose (SJC)
Fri, May 1
One-way
Ontario (ONT)
—
from$372economy
San Jose (SJC)
Sat, May 2
One-way
Ontario (ONT)
—
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Other Destinations
San Jose (SJC) to Seattle (SEA) in May from $137
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San Jose (SJC) to Detroit (DTW) in May from $179
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Flights from Other Cities
Denver (Any) to Ontario (ONT) in May from $40
From $40
Denver (Any) to Ontario (ONT) in May from $56
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Las Vegas (LAS) to Ontario (ONT) in May from $56
From $56
Omaha (OMA) to Ontario (ONT) in May from $80
From $80
Cleveland (Any) to Ontario (ONT) in May from $86
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Grand Rapids (GRR) to Ontario (ONT) in May from $86
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✈️ Flight Guide: San Jose (SJC) → Ontario (ONT)
Complete travel information for your May journey
May is a strong shoulder-season month for departures from San Jose Mineta International Airport (SJC) to Ontario International Airport (ONT). Average fares for this short domestic route tend to be lower than peak summer, but expect spikes around Memorial Day weekend and regional conferences. For best SJC to ONT deals, book 2–6 weeks ahead and fly midweek. Parking and TSA lines at San Jose can grow during early morning and late afternoon commutes; consider park-and-ride, rideshares, or the VTA light rail. If you’re traveling from nearby major cities—San Francisco, Oakland, Palo Alto, Mountain View or Santa Cruz—factor in Bay Area commute traffic, and check airline schedules for limited nonstop options. Book flights from San Jose Mineta International Airport (SJC) to Ontario International Airport (ONT) early to secure the best fares and seat options.
Departing from San Jose (SJC) FAQs
For flights from San Jose Mineta International Airport (SJC) to Ontario International Airport (ONT) in May, arrive at least 90 minutes before departure to allow time for parking, TSA security, and gate changes. May is shoulder season but includes Memorial Day weekend and local tech conferences that can increase traffic and checkpoint lines, so planning extra time is recommended. Check real-time TSA wait times and sign up for airport alerts.
Direct nonstop flights between San Jose Mineta International Airport (SJC) and Ontario International Airport (ONT) in May are limited and may not operate daily; many travelers find one-stop options via major hubs like Los Angeles (LAX) or Phoenix (PHX). Check airline schedules and book early if you need a nonstop; use flight search tools and filter for nonstop to compare real-time availability and prices for May travel.
San Jose Mineta International Airport (SJC) offers on-site hourly, daily, and long-term parking with higher occupancy during May holidays and tech conference periods. Expect daily lot rates to vary; remote or economy lots are usually the cheapest option and fill up first on peak travel days, so reserve parking in advance when possible to secure a lower rate and faster drop-off. Consider rideshares from San Jose, Palo Alto, Mountain View, or nearby cities to skip parking hassles.
Popular transport options to San Jose Mineta International Airport (SJC) include VTA light rail, airport shuttles, rideshare services, taxis, and driving from nearby cities like San Francisco, Oakland, Palo Alto, Mountain View and Santa Cruz. In May, morning and evening commute traffic can extend transit times, so give yourself extra buffer and consider airport shuttles or express buses for reliable timing. If you’re traveling from the broader Bay Area, compare door-to-door rideshare vs. Caltrain + shuttle for the best balance of cost and speed.
Baggage policies depend on the airline—low-cost carriers may charge for carry-on and checked bags while legacy carriers often include a carry-on and sometimes a checked bag with higher fare classes. In May, when many travelers carry warm-weather clothing and extra items for weekend trips to Los Angeles or Orange County, check airline baggage limits, fees, and size rules before you pack. Purchase checked bags online ahead of time to save money and avoid airport surcharges.
San Jose Mineta International Airport (SJC) features airline lounges, charging stations, workspaces, free Wi-Fi and several dining options catering to business travelers. In May, lounge access can be especially valuable during conference-heavy travel periods in Silicon Valley as it provides quiet space to work. Verify lounge access rules and hours with your carrier or membership program before your trip.
May arrivals at Ontario International Airport (ONT) are convenient for travelers heading to Los Angeles, Anaheim, Riverside, Pomona and San Bernardino. The Inland Empire typically enjoys warm, sunny weather with manageable airport operations, but Memorial Day and weekend events can increase demand for rental cars and rideshares. For arrivals from San Jose Mineta International Airport (SJC), expect short domestic flight times and plan ground transfers in advance—Metrolink and shuttle services provide cost-effective options to major destinations. Use flight tracking and ONT advisories to avoid congestion, and book rental cars early to lock in better May rates.
Arriving at Ontario (ONT) FAQs
From Ontario International Airport (ONT) you can use rideshares, taxis, Metrolink commuter rail, airport shuttles, and rental cars to reach downtown Los Angeles, Anaheim, Riverside and other nearby destinations. In May, demand rises around holiday weekends and theme-park season in Orange County, so reserve shuttles or rideshares in advance for early morning and late-night arrivals. Metrolink provides a cost-effective rail connection to LA and regional cities, but check schedules ahead of time.
May in Ontario, CA (serving Ontario International Airport (ONT)) typically brings warm daytime temperatures between the mid-60s and mid-80s°F (18–29°C) with cooler evenings. Pack lightweight layers, sunscreen, and a light jacket for morning or evening travel; inland valley temperatures are warmer than coastal Bay Area conditions. Comfortable walking shoes are recommended for exploring nearby destinations like Anaheim, Riverside, or Pomona.
May can see increased arrivals at Ontario International Airport (ONT) around Memorial Day weekend, sporting events, and conventions in nearby Anaheim or Los Angeles, which may lead to longer taxi, baggage claim, and rideshare wait times. Allow extra time for ground transfers and consider off-peak arrival times to avoid congestion. Check airline delay notifications and ONT airport advisories before travel.
Ontario International Airport (ONT) offers family-friendly amenities like kid-friendly dining options, family restrooms, stroller-friendly walkways, and easy rental-car access that are especially helpful during May school trips and theme-park vacations. Family parking and quick access to shuttles make ONT a convenient gateway to Anaheim and Disneyland area, but arriving early helps smooth security and check-in. For special needs or extra assistance, contact your airline or ONT customer service in advance.
Ontario International Airport (ONT) has an on-site rental car facility with major companies and adjacent economy and daily parking; however, May vacation demand can reduce availability around weekends and holiday periods. Reserve rental cars early for May travel, and compare off-site lots or pre-booked airport transfers to secure lower rates. If you plan to drive to nearby attractions like Riverside or Anaheim, booking ahead ensures the best selection and price.
Ontario International Airport (ONT) is roughly 35–45 miles from downtown Los Angeles (about 45–70 minutes depending on traffic), about 20 miles from Anaheim (30–45 minutes), and under 15 miles to central Riverside (20–30 minutes). May traffic varies—weekday commute hours can extend drive times—so plan extra travel time if you have appointments or connecting ground transportation. Use real-time traffic apps and consider off-peak travel windows for faster transfers.
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Events & Festivals — May Travel Tips for SJC → ONT Passengers
Events in May that can influence travel between San Jose Mineta International Airport (SJC) and Ontario International Airport (ONT) include Memorial Day weekend travel, tech conferences in Silicon Valley, college graduation ceremonies across Bay Area campuses, and theme-park surges in Anaheim and Orange County. In the Inland Empire and Los Angeles region, trade shows and conventions at the Anaheim Convention Center or regional arenas can increase hotel and flight demand. To avoid event-driven price spikes and busy airport periods, travel midweek, book early, and confirm local event dates near your travel window. If attending events, secure ground transport and rental cars in advance to avoid surge pricing.
Best Time to Fly — San Jose Mineta International Airport (SJC) to Ontario International Airport (ONT) in May
The best time to fly from San Jose Mineta International Airport (SJC) to Ontario International Airport (ONT) in May is midweek—Tuesday through Thursday—when fares and airport crowds are often lower. Early morning flights before 8 AM and late evening flights after 7 PM frequently have fewer delays and less traffic to the airport. Avoid Memorial Day weekend and large convention dates in the Los Angeles and Anaheim area if you want the best prices and shortest ground waits. Book sooner rather than later for May travel, especially if your trip coincides with regional events.
Direct vs Connecting Flights — SJC to ONT in May
Direct nonstop flights are faster and reduce the risk of missed connections, making them ideal for quick business trips or tight schedules from San Jose Mineta International Airport (SJC) to Ontario International Airport (ONT). However, nonstop availability can be limited and pricier in May, so connecting flights via Los Angeles (LAX), Phoenix (PHX) or other hubs often provide more schedule options and lower fares. If you choose a connecting itinerary, allow sufficient layover time (at least 60–90 minutes domestically) to account for potential delays and security rechecks. Balance cost, total travel time, and your tolerance for layovers when deciding.
Airline Comparison — Carriers Serving SJC to ONT Route in May
Common carriers to consider for the SJC to ONT route in May include Southwest Airlines, Alaska Airlines, American Airlines and United Airlines—each varies by fare class, baggage rules, and schedule frequency. Southwest often offers competitive fares and two free checked bags, making it a strong value choice for families heading to Anaheim; Alaska and legacy carriers may provide better connections via LAX or SEA and frequent flier perks. For business travelers prioritizing speed, look for the few nonstop options or short single-connection itineraries, and compare total door-to-door time rather than just airfare. Always read the fare rules and baggage policies before booking, and consider loyalty program benefits for repeat travel between San Jose Mineta International Airport (SJC) and Ontario International Airport (ONT).
Seasonal Travel Tips — Flying SJC to ONT in May
May travel between San Jose Mineta International Airport (SJC) and Ontario International Airport (ONT) benefits from mild weather—cooler in the Bay Area and warmer inland—so pack layers and sunscreen. Expect variable traffic patterns: Bay Area commute peaks can impact SJC access, while Memorial Day and holiday travel affect ONT ground services. For smoother travel, enroll in airline notifications, check TSA wait times and airport status the morning of departure, and carry a portable charger for the short flight. Consider booking refundable or changeable fares if your schedule may shift around May events. Book early for the best May fares and available rental cars, and always leave extra time for airport transfers.
Flight Time & Schedules — San Jose Mineta International Airport (SJC) to Ontario International Airport (ONT)
Nonstop flight time from San Jose Mineta International Airport (SJC) to Ontario International Airport (ONT), when available, averages around 1 hour 10 minutes to 1 hour 30 minutes airborne. Many itineraries include one connection—common connection points are Los Angeles (LAX), Phoenix (PHX), or San Diego (SAN)—which can extend total travel time to 2–4+ hours depending on layover length. In May, airlines typically schedule early-morning departures (6–9 AM), midday flights (11 AM–2 PM) and evening services (5–8 PM), but frequency varies by carrier. For the smoothest trip, choose flights outside commuter peak hours and verify up-to-date schedules on airline websites before booking.
Cheap Flights — San Jose Mineta International Airport (SJC) to Ontario International Airport (ONT) in May
To secure cheap flights from San Jose Mineta International Airport (SJC) to Ontario International Airport (ONT) in May, follow these tips: book 2–6 weeks ahead for domestic short-haul flights, be flexible with travel dates (Tuesdays and Wednesdays often cheaper), and compare nearby airports (e.g., flying into Los Angeles LAX or John Wayne SNA and transferring may offer savings). Use fare alerts and set flexible-date searches to spot dips in price. Consider connecting flights if nonstop options are limited or expensive—often saves money but increases travel time. Remember to factor in baggage fees, rental car costs, and ground-transfer expenses when evaluating the cheapest itinerary. Ready to save? Set a price alert for SJC → ONT May flights and book when you see a favorable drop.