Ontario flight deals: 3 unusually low fares

In the last two days, Aviasales flagged 3 fares from Ontario as unusually low.

San Francisco · one-way · 5 Dec

$19

5 Dec · ONT → SFO · Frontier Airlines

nonstop

found 2 days ago · flagged since 13 Oct

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Las Vegas · one-way · 8 Dec

$21

8 Dec · ONT → LAS · Frontier Airlines

nonstop

found 2 days ago · flagged since 10 Nov

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New York · one-way · 9 Mar 2027

$250

9 Mar 2027 · ONT → JFK · Alaska Airlines

stops unknown

found 2 days ago · flagged since 11 Nov

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Fares that just dropped from Ontario

All flights from Ontario

Prices are what travelers' searches on Aviasales found in the last 7 days, in US dollars: the price the seller showed on Aviasales; bags may cost extra. Fares change, so check today's price before you book. How our prices work