✈️ How to Get to Ontario Airport From San Diego [2025–2026 Guide]

Ontario Airport (ONT) is ~115 miles from San Diego. Driving via I-15 takes 2–2.5 hours ($25–$40 fuel). Amtrak and Metrolink combinations take 3–4 hours ($20–$40). Shuttle and rideshare options are also available.

Ontario International Airport (ONT), located in California’s Inland Empire, is a convenient hub for domestic and some international flights, especially for travelers heading east or to Mexico. While San Diego International (SAN) is closer, many travelers choose ONT for cheaper fares, less congestion, or specific airline routes. This 2025–2026 guide explains how to get from San Diego to Ontario Airport by car, train, bus, or shuttle.

🚗 Driving From San Diego to Ontario Airport

Driving is the most direct and flexible option.

• Distance: ~115 miles.

• Duration: 2–2.5 hours, longer during rush hours.

• Route: Take I-15 North from San Diego directly to Ontario. Alternate routes include I-5 North + CA-91 East.

• Cost: Fuel typically $25–$40 round trip, depending on your vehicle.

• Parking at ONT:

  • Economy lots: $13–$16/day.

  • Daily lots: $20–$24/day.

  • Valet: $27–$30/day.

✅ Best for families, early flights, or when carrying luggage.

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🚆 Train Options From San Diego to Ontario Airport

You can combine Amtrak and Metrolink for a rail-based trip.

• Amtrak Pacific Surfliner:

  • San Diego (Santa Fe Depot) → Fullerton.

  • Duration: ~2.5 hours.

  • Cost: $25–$35 one way.

• Metrolink (San Bernardino Line):

  • From Fullerton, transfer to Metrolink heading toward San Bernardino.

  • Get off at Rancho Cucamonga Station or Ontario-East Station.

  • Duration: ~40–60 minutes.

  • Cost: $5–$10.

• Final Transfer to ONT:

  • From the Metrolink station, take a rideshare or Omnitrans bus (~15–20 minutes).

  • Cost: $10–$20 rideshare or $2–$5 bus.

• Total: 3–4 hours, ~$30–$45.

✅ Scenic and affordable, but requires transfers.

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🚌 Bus From San Diego to Ontario Airport

Buses are inexpensive but slower.

• FlixBus / Greyhound:

  • San Diego → San Bernardino or Riverside.

  • Duration: 3–4.5 hours.

  • Cost: $20–$30.

• Final Leg: From San Bernardino/Riverside, take a rideshare or local bus to ONT (~30–40 minutes, $10–$25).

✅ Good for budget travelers without cars, but not ideal if you have a tight flight schedule.

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🚖 Rideshare & Shuttle Options

• Uber/Lyft:

  • San Diego → Ontario Airport.

  • Duration: 2–2.5 hours.

  • Cost: $180–$250 one way, depending on demand.

• Private Airport Shuttles:

  • Vans and SUVs available for groups.

  • Cost: $250–$350 one way.

✅ Convenient for groups or travelers who prefer door-to-door service without transfers.

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🌞 Best Time to Travel to ONT

• Early Morning Flights: Leave San Diego 4–5 hours before your flight to allow for traffic.

• Weekday Rush Hours: Avoid I-15 and CA-91 between 6:30–9:00 AM and 3:30–7:00 PM.

• Weekends: Travel is generally smoother, though traffic may still build near Riverside or Corona.

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📝 Travel Summary Table

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❓ Frequently Asked Questions (FAQ)

Q1: How far is Ontario Airport from San Diego?
About 115 miles, or 2–2.5 hours by car.

Q2: What’s the fastest way to get there?
Driving via I-15 is fastest, though rideshare offers a no-parking alternative.

Q3: Is there a direct train from San Diego to Ontario Airport?
No. You must transfer from Amtrak (San Diego → Fullerton) to Metrolink, then take a short rideshare or bus to ONT.

Q4: How much is an Uber from San Diego to ONT?
Typically $180–$250 one way.

Q5: Should I fly from San Diego (SAN) instead of Ontario (ONT)?
SAN is more convenient, but ONT often offers cheaper flights, less congestion, and direct connections not available from San Diego.

✅ This 2025–2026 San Diego to Ontario Airport guide covers all options — whether you want speed, budget travel, or door-to-door convenience — so you can plan your trip to ONT with confidence.