$137 Cheap United flights Las Vegas (LAS) to Ontario (ONT)

View $137 flight on Tue, Sep 9, 2025Opens in a new window

$137 Cheap United flights Las Vegas (LAS) to Ontario (ONT)

Prices were available within the past 7 days and start at $137 for one-way flights and $361 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

United
Sat, Aug 23 - Mon, Aug 25
LAS
Las Vegas
ONT
Ontario
$361 Roundtrip, found 19 hours ago
$361
Roundtrip
found 19 hours ago
Select United flight, departing Sat, Aug 23 from Las Vegas to Ontario, returning Mon, Aug 25, priced at $361 found 19 hours ago
United
Sat, Aug 23 - Mon, Aug 25
LAS
Las Vegas
ONT
Ontario
$493 Roundtrip, found 19 hours ago
$493
Roundtrip
found 19 hours ago
Select United flight, departing Sat, Aug 23 from Las Vegas to Ontario, returning Mon, Aug 25, priced at $493 found 19 hours ago
Flights from Las Vegas (LAS) to Ontario (ONT)
Origin airport
Harry Reid Intl.
Destination airport
Los Angeles - Ontario Intl.
Airlines serving
Alaska Airlines, American Airlines, Delta, Frontier Airlines, United
Popular airline
Frontier Airlines
Distance
314 km
Average flight time
1 hour 5 mins