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Ontario
CHEAP FLIGHTS TO

Ontario

from €18up to −83%

Looking for cheap flights to Ontario, United States? Flare tracks fares to Ontario non-stop and flags them the moment they drop below their usual price. Below are the cheapest Ontario deals live right now : from 6 departure cities across Europe, starting at €18.

Live Ontario flight deals

Updated Fri, 31 Jul 2026 15:17 UTC · sorted by biggest price drop.

Ontario−83%
San Francisco→Ontario

Cheap flights from San Francisco to Ontario (United States) · from 27 Aug · direct · one-way

€18€105−83%
Ontario−59%
Seattle→Ontario

Cheap flights from Seattle to Ontario (United States) · from 18 Aug · direct · one-way

€40€99−59%
Ontario−50%
Dallas→Ontario

Cheap flights from Dallas to Ontario (United States) · from 8 Sep · direct · one-way

€69€138−50%
Ontario−50%
New York→Ontario

Cheap flights from New York to Ontario (United States) · from 11 Sep · 1 stop · return

€257€514−50%
Ontario−49%
New York→Ontario

Cheap flights from New York to Ontario (United States) · from 13 Nov · direct · one-way

€110€217−49%
Ontario−46%
Chicago→Ontario

Cheap flights from Chicago to Ontario (United States) · from 15 Oct · direct · one-way

€108€198−46%
Ontario−45%
Rome→Ontario

Cheap flights from Rome to Ontario (United States) · from 4 Aug · 1 stop · return

€557€1017−45%
Ontario−33%
Dallas→Ontario

Cheap flights from Dallas to Ontario (United States) · from 2 Oct · direct · return

€137€205−33%

Other destinations on sale

Venice €16Podgorica €18Tirana €12Vilnius €13Suceava €17Warsaw €12Larnaca €12Stockholm €10Milan €13Skopje €8Iasi €18Trapani €18Thira €16Bucharest €13Chisinau €17Yerevan €20Heraklion €16Copenhagen €10

Don’t miss the next price crash

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