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
Denver
2025-04-23
Ontario
USD 30

One-way F9 Nonstop Economy fare found on 2025-04-02


*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, Dallas, Houston, Phoenix, Seattle, San Francisco, San Jose to Ontario (ONT)

Destination Airport Information

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

Airlines Flying from

Southwest Airlines-WN
Frontier Airline, F9
United Airlines, UA

Popular Routes

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