FFL Helper

FFL Helper / Chicago / Ontario

CHI → ONT

Chicago to Ontario

Compare one-way fares for flights from Chicago to Ontario.

Lowest fare $95
Distance 1,712 mi
Flight time 11h 9m
Airports ORD–ONT
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By month: August 2026 from $111 · September 2026 from $95

Price calendar

August 2026

From $111 · up to $122

Mon
Tue
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Sun
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24 $111 25 $116 26 $116 27 $116 28 $122 29 $118 30 $114 31 $122

September 2026

From $95 · up to $142

Mon
Tue
Wed
Thu
Fri
Sat
Sun
1 $115 2 $95 3 $118 4 $118 5 $142 6 $126 7 $126 8 $126 9 $126 10 $110
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12
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Upcoming dates

Ontario ONT

$95

Sep 02, 2:41pm · 11h 9m · 1 stop

ORD → ONT · Frontier Airlines

Tickets

Ontario ONT

$110

Sep 10, 6:30am · 19h 17m · 1 stop

ORD → ONT · Frontier Airlines

Tickets

Ontario ONT

$111

Aug 24, 5:46pm · 27h 15m · 1 stop

ORD → ONT · Frontier Airlines

Tickets

Ontario ONT

$114

Aug 30, 8:11pm · 13h 52m · 1 stop

ORD → ONT · Frontier Airlines

Tickets

Ontario ONT

$115

Sep 01, 9:10pm · 13h 26m · 1 stop

ORD → ONT · Frontier Airlines

Tickets

Ontario ONT

$122

Aug 31, 8:11pm · 21h 38m · 1 stop

ORD → ONT · Frontier Airlines

Tickets

About this route

This calendar shows dated one-way fares from Chicago to Ontario. Use it to see which days are cheaper before you search tickets.

Flight time and airport codes on this page are for the sample itinerary we have on file. Always confirm the live routing when you book Chicago to Ontario.