Search & Compare - Ontario Flights & Tickets

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Cheap Flights to Ontario (ONT)

Looking for a cheap last-minute deal or the best round-trip flight to Ontario? Find the biggest savings on one-way and round-trip tickets right here.

Flight deals to Ontario

Frontier Airlines  F9
Frontier Airlines
Seattle
2025-03-22
Ontario
2025-03-30
USD -286

Round Trip F9 Economy fare found on 2025-03-12
Frontier Airlines  F9
Frontier Airlines
Seattle
2025-03-22
Ontario
2025-03-30
USD -286

Round Trip F9 Economy fare found on 2025-03-12
Frontier Airlines  F9
Frontier Airlines
Seattle
2025-03-22
Ontario
2025-03-30
USD -286

Round Trip F9 Economy fare found on 2025-03-12
Southwest Airlines  WN
Southwest Airlines
Phoenix
2025-03-07
Ontario
USD -12

One-way WN Nonstop Economy fare found on 2025-03-05
Southwest Airlines  WN
Southwest Airlines
Phoenix
2025-03-07
Ontario
USD -12

One-way WN Nonstop Economy fare found on 2025-03-05
Southwest Airlines  WN
Southwest Airlines
Phoenix
2025-03-07
Ontario
USD -12

One-way WN Nonstop Economy fare found on 2025-03-05
Southwest Airlines  WN
Southwest Airlines
Phoenix
2025-03-07
Ontario
USD -5

One-way WN Economy fare found on 2025-03-05
Southwest Airlines  WN
Southwest Airlines
Phoenix
2025-03-07
Ontario
USD -5

One-way WN Economy fare found on 2025-03-05
Southwest Airlines  WN
Southwest Airlines
Phoenix
2025-03-07
Ontario
USD -5

One-way WN Economy fare found on 2025-03-05
Frontier Airlines  F9
Frontier Airlines
Las Vegas
2025-05-10
Ontario
USD 29

One-way F9 Nonstop Economy fare found on 2025-04-22


*Prices are per person and are for e-tickets and include all taxes & fees in USD.
*Fareleaders always attempts to get accurate pricing, however, prices are not guaranteed.
*Fareleaders is not seller, we aggregate tones of data for you from other online travel agencies and external sources.

Facts to know while booking flights to Ontario (ONT)

Which airlines fly to Ontario?
Southwest Airlines, Frontier Airlines, United Airlines Airlines flying the most to Ontario (ONT)
What is the cheapest flight to ONT Airport?
In the past couple of days, the cheapest tickets to ONT were found on Frontier Airlines : USD -286
What are the most popular origin to Ontario (ONT)?
Travelers frequently travel from Denver, Las Vegas, Phoenix, Seattle, San Francisco to Ontario (ONT)

Essential Information for Booking Flights to Ontario (ONT)- AI Insights

What's the cheapest airline to ont?
To find the cheapest flights to Ontario International Airport (ont), check Virgin Atlantic (VS), Air France (AF), Alaska Airlines (AS), WestJet Airlines (WS), Aerolineas Argentinas (AR), and more.
What's the popular airline to fly to ont?
American Airlines (AA) offers popular routes to Ontario International, providing a great selection of affordable flights to this destination.
What's the cheapest day of the week to fly to ont?
Tuesday is the cheapest day to fly to Ontario International Airport.
What's the cheapest month to fly to ont?
April is the cheapest month to fly to Ontario International.
What is the lowest price for a flight from Ontario International to the United States?
Virgin Atlantic (VS) typically offers the lowest fares for flights from Ontario International to the United States, while Air France (AF) and Alaska Airlines (AS) frequently provide competitive options. WestJet Airlines (WS) and Aerolineas Argentinas (AR) can also be found at lower prices, depending on the route and time of booking.
When is it generally cheaper to fly from Ontario International to a destination?
April is generally considered the cheapest month to fly from Ontario International to destinations, followed by early April and late April. Tuesday is often cited as the day with the lowest fares, though this can vary based on demand and specific routes.
Are there any airlines that consistently offer budget-friendly flights from Ontario International to the United States?
Virgin Atlantic (VS), Air France (AF), Alaska Airlines (AS), WestJet Airlines (WS), and Aerolineas Argentinas (AR) consistently rank as airlines known for offering affordable fares to destinations within the United States.
Does the cost of a flight from Ontario International to the United States vary significantly by time of year?
Yes, the cost of flights from Ontario International to the United States is generally higher during peak travel seasons (summer, holidays), such as June, July, and August. Early booking can sometimes yield better deals.

Destination Airport Information

IATA CodeONT
NameOntario International
CityOntario
CountryUS
Latitude34.0559997558594
Longitude-117.600997924805

Airlines Flying from

Popular Routes

Cheap Flights from Orlando to Ontario: MCO to ONT Flights
Cheap Flights from Dallas to Ontario: DAL to ONT Flights
Cheap Flights from Las Vegas to Ontario: LAS to ONT Flights
Cheap Flights from Ontario to San Francisco: ONT to SFO Flights
Cheap Flights from Denver to Ontario: DEN to ONT Flights
Cheap flights from Atlanta to Ontario: ATL to ONT Flights
Cheap flights from West Palm Beach to Toronto: PBI to YYZ Flights
Cheap flights from West Palm Beach to Montreal: PBI to YUL Flights
Cheap flights from Washington to Toronto: IAD to YYZ Flights
Cheap flights from Washington to Montreal: IAD to YUL Flights
Cheap flights from Tampa to Toronto: TPA to YYZ Flights
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Cheap flights from Seattle to Toronto: SEA to YYZ Flights
Cheap flights from Seattle to Montreal: SEA to YUL Flights
Cheap flights from San Francisco to Toronto: SFO to YYZ Flights
Cheap flights from San Francisco to Montreal: SFO to YUL Flights
Cheap flights from Portland to Toronto: PDX to YYZ Flights
Cheap flights from Portland to Montreal: PDX to YUL Flights
Cheap flights from Phoenix to Toronto: PHX to YYZ Flights
Cheap flights from Phoenix to Montreal: PHX to YUL Flights
Cheap flights from Philadelphia to Toronto: PHL to YYZ Flights
Cheap flights from Philadelphia to Montreal: PHL to YUL Flights
Cheap flights from Orlando to Toronto: MCO to YYZ Flights
Cheap flights from Orlando to Montreal: MCO to YUL Flights
Cheap Flights from New York (JFK) to Toronto (YYZ)
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Cheap flights from Los Angeles to Toronto: LAX to YYZ Flights
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Cheap flights from Las Vegas to Toronto: LAS to YYZ Flights
Cheap flights from Las Vegas to Montreal: LAS to YUL Flights
Cheap flights from Houston to Toronto: IAH to YYZ Flights
Cheap flights from Houston to Montreal: IAH to YUL Flights
Cheap flights from Denver to Toronto: DEN to YYZ Flights
Cheap flights from Denver to Montreal: DEN to YUL Flights
Cheap flights from Dallas to Toronto: DFW to YYZ Flights
Cheap flights from Dallas to Montreal: DFW to YUL Flights
Cheap flights from Chicago to Toronto: ORD to YYZ Flights
Cheap flights from Chicago to Montreal: ORD to YUL Flights
Cheap flights from Boston to Toronto: BOS to YYZ Flights
Cheap flights from Boston to Montreal: BOS to YUL Flights
Cheap flights from Atlanta to Toronto: ATL to YYZ Flights
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