What Terminal does Frontier Airlines at Ontario International Airport (ONT)

Terminal 2 at Ontario International Airport handles Frontier Airlines flights. The Ontario Airport Frontier Terminal connects Denver (DEN), Las Vegas (LAS), Phoenix (PHX), Dallas (DFW), and San Francisco (SFO), and other popular destinations across the US. This terminal is 265,000 square feet wide and has 12 boarding gates. It offers airline services, dining options, and modern passenger amenities. All the facilities of Frontier Airlines, including the check-in, security checkpoints, boarding gates, customs area, and baggage claim area, are clearly marked within the terminal buildings.

Ontario International Airport Frontier Flights Terminal Info

Frontier flights handle both departure and arrival functions from different floors at ONT Terminal 2. This Frontier Terminal Ontario features two levels to manage all flight operations.

Level F1: Frontier ticketing and check-in counters, baggage drop stations, baggage claim areas, and ONT ground transportation access are available on this level.

Level F2: Security checkpoints with TSA PreCheck, CLEAR lanes, and boarding gates are located here.

Frontier Flight Departures from ONT Terminal 2

Frontier flights depart from level F2. The Frontier check-in closes 60 minutes before departure, boarding begins 45 minutes before departure, and boarding ends 20 minutes before departure. Checking in 24 hours earlier through the mobile app allow to skip the counter lines.

• Use the check-in counter at the Frontier Ontario terminal for baggage drop-off.
• Proceed to the security checkpoints and show the boarding pass and ID at security. TSA security checkpoints operate from 4:00 am to 7:00 am and from 7:00 pm to 11:00 pm.
• Clear security screening and walk to the assigned boarding gate.

Note: Check the airport monitors or the Frontier app for real-time updates.

Frontier Flight Arrivals at ONT Terminal 2

After arriving at Ontario Airport, domestic flyers can directly go to collect their luggage; however, international passengers need to clear immigration.

• After deplaning, follow the signs to the US Customs and Immigration area.
• At Ontario Frontier Terminal, the staff will verify the documents. Use Mobile Passport Control to submit the documents before arriving at the airport to reduce customs wait time.
• Check the carousel number for the specific flight number on the digital screen.
• Exit the public area to access the rideshares, taxis, and the shuttle to the Rental Car Center.

How Does the ONT Frontier Terminal Map Help?

The interactive Frontier Airlines ONT Airport Terminal map provides real-time information about check-in counter and security checkpoint locations, walking directions to the specific gate, locates the nearest restrooms, and highlights dining options near the Frontier gates.

Frontier Terminal Ontario Airport Lounge

Terminal 2 offers access to the Aspire Lounge to eligible Frontier passengers. 

Location: Close to gate 210, post-security

Operating Hours: 5:00 am to 12:00 am

Access: Entry fee of approximately $48.85 is applicable for all Frontier flyers. Priority Pass, Dragonpass, and certain American Express cardholders can also access the lounge.

Other dining options at Terminal 2 may include:

• Brewery X
• Dunkin
• Evolve by Hudson
• Pizza Vino

The exclusive Frontier Airlines Ontario Airport Terminal is Terminal 2. The clear signage, easy check-in, and well-marked boarding gates make it easy to walk through the terminal.

Frequently Asked Questions