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Get United's best fares today on flights from Las Vegas to Ontario from *

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Low fare calendar for flights from Las Vegas (LAS) to Ontario (ONT)

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from
$923*
Viewed:2 hours ago
Economy
Return:03/04/20
20
No available fares
21
from
$376*
Viewed:2 hours ago
Economy
Return:03/06/20
22
No available fares
23
from
$903*
Viewed:13 hours ago
Economy
Return:03/01/20
24
from
$542*
Viewed:2 hours ago
Economy
Return:03/09/20
25
from
$327*
Viewed:2 hours ago
Economy
Return:03/10/20
26
from
$356*
Viewed:2 hours ago
Economy
Return:03/11/20
27
No available fares
28
No available fares
29
from
$341*
Viewed:2 hours ago
Economy
Return:03/14/20
Lowest PriceToday
*Prices have been available for round trips within the last 48 hours and may not be currently available. 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.

Looking for additional flights from Las Vegas to Ontario?

FromToDatesFare TypePrice

Las Vegas (LAS)

Ontario (ONT)

Depart: 03/17/20

Return: 03/31/20

Roundtrip
from
$291*
Viewed:1hourago

Las Vegas (LAS)

Ontario (ONT)

Depart: 03/24/20

Return: 03/31/20

Roundtrip
from
$291*
Viewed:1hourago

Las Vegas (LAS)

Ontario (ONT)

Depart: 04/14/20

Return: 04/21/20

Roundtrip
from
$291*
Viewed:1hourago

Las Vegas (LAS)

Ontario (ONT)

Depart: 04/07/20

Return: 04/14/20

Roundtrip
from
$291*
Viewed:1hourago

Las Vegas (LAS)

Ontario (ONT)

Depart: 04/08/20

Return: 04/15/20

Roundtrip
from
$291*
Viewed:1hourago

Las Vegas (LAS)

Ontario (ONT)

Depart: 04/01/20

Return: 04/15/20

Roundtrip
from
$291*
Viewed:1hourago

Las Vegas (LAS)

Ontario (ONT)

Depart: 05/13/20

Return: 05/20/20

Roundtrip
from
$291*
Viewed:12hoursago

Las Vegas (LAS)

Ontario (ONT)

Depart: 04/08/20

Return: 04/22/20

Roundtrip
from
$291*
Viewed:12hoursago

Las Vegas (LAS)

Ontario (ONT)

Depart: 04/07/20

Return: 04/21/20

Roundtrip
from
$291*
Viewed:12hoursago

Las Vegas (LAS)

Ontario (ONT)

Depart: 05/16/20

Return: 05/23/20

Roundtrip
from
$291*
Viewed:12hoursago

*Prices have been available for round trips within the last 48 hours and may not be currently available. 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.

Weather in Ontario

Tuesday broken clouds
70°F 02/18/20
Wednesday sky is clear
71°F 02/19/20
Thursday sky is clear
75°F 02/20/20
Friday sky is clear
76°F 02/21/20
Saturday heavy intensity rain
56°F 02/22/20
Sunday sky is clear
65°F 02/23/20
Monday sky is clear
64°F 02/24/20
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