Flights from Ontario to Mexico from $ 337*
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1 Passenger, Economy
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Find United's best fares from Ontario to Mexico
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$
Ontario (ONT)to
Cancun (CUN)01/11/26 - 01/15/26from$Â 337Viewed: 21 hours agoRoundtripEconomy
Ontario (ONT)to
Mexico City (MEX)01/26/26 - 02/02/26from$Â 536Viewed: 21 hours agoRoundtripEconomy
Ontario (ONT)to
Cabo San Lucas (SJD)02/08/26 - 02/12/26from$Â 350Viewed: 20 hours agoRoundtripEconomy
*Prices have been available for round trips within the last 48 hours and may not be currently available. For Economy class, fares listed may be Basic Economy, which is our most restrictive fare option and subject to additional restrictions. Additional baggage charges and fees for other optional service may apply. Other terms and conditions may apply. Schedules are subject to change without notice.
Business class flights from Ontario to Mexico
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flight_land
$
Ontario (ONT)to
Cancun (CUN)
03/09/26 - 03/16/26
Roundtrip
Business
from
$Â 751
Viewed: 19 hours ago
Ontario (ONT)to
Mexico City (MEX)
07/20/26 - 07/27/26
Roundtrip
Business
from
$Â 1,338
Viewed: 16 hours ago
Ontario (ONT)to
Cabo San Lucas (SJD)
12/18/25 - 12/21/25
Roundtrip
Business
from
$Â 1,160
Viewed: 17 hours ago
*Prices have been available for round trips within the last 48 hours and may not be currently available. For Economy class, fares listed may be Basic Economy, which is our most restrictive fare option and subject to additional restrictions. Additional baggage charges and fees for other optional service may apply. Other terms and conditions may apply. Schedules are subject to change without notice.