Ontario to New York in September 2026

Dated one-way fares from Ontario to New York in September 2026. Use the calendar to see which days are cheaper.

Lowest this month $129

Highest this month $264

Sample fare $129

Airports ONT–EWR

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September 2026 price calendar

From $129 · up to $264

Mon

Tue

Wed

Thu

Fri

Sat

Sun

1 $203 2 $234 3 $264 4 $231 5 $198 6 $189 7 $181 8 $181 9 $181 10 $174 11 $150 12 $150 13 $145 14 $140 15 $135 16 $135 17 $135 18 $135 19 $135 20 $135 21 $129

New York NYC

$129

Sep 21, 7:46pm · 13h 49m · 1 stop

ONT → EWR · Frontier Airlines

New York NYC

$140

Sep 14, 11:45am · 28h 59m · 2 stops

ONT → LGA · Frontier Airlines

This page is only September 2026 on the Ontario to New York route. Open the full route if you want the next months side by side.

Prices move as seats sell. Confirm the live itinerary before you book Ontario to New York in September 2026.