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

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Low fare calendar for flights from Ontario (ONT) to Chicago (ORD)

Sunday
Monday
Tuesday
Wednesday
Thursday
Friday
Saturday
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15
from
$274*
Viewed:3 hours ago
Economy
Return:12/17/19
16
from
$254*
Viewed:10 hours ago
Economy
Return:12/23/19
17
from
$254*
Viewed:10 hours ago
Economy
Return:12/31/19
18
from
$254*
Viewed:10 hours ago
Economy
Return:12/25/19
19
from
$254*
Viewed:10 hours ago
Economy
Return:01/02/20
20
from
$274*
Viewed:10 hours ago
Economy
Return:12/27/19
21
from
$254*
Viewed:10 hours ago
Economy
Return:01/04/20
22
No available fares
23
from
$254*
Viewed:10 hours ago
Economy
Return:12/30/19
24
from
$254*
Viewed:10 hours ago
Economy
Return:12/31/19
25
from
$254*
Viewed:10 hours ago
Economy
Return:01/01/20
26
from
$254*
Viewed:10 hours ago
Economy
Return:01/09/20
27
from
$254*
Viewed:10 hours ago
Economy
Return:01/03/20
28
from
$254*
Viewed:10 hours ago
Economy
Return:01/11/20
29
from
$274*
Viewed:10 hours ago
Economy
Return:01/05/20
30
from
$254*
Viewed:10 hours ago
Economy
Return:01/13/20
31
from
$254*
Viewed:10 hours ago
Economy
Return:01/07/20
from
$254*
Viewed:10 hours ago
Economy
Return:01/15/20
from
$274*
Viewed:10 hours ago
Economy
Return:01/09/20
from
$254*
Viewed:10 hours ago
Economy
Return:01/10/20
from
$274*
Viewed:10 hours ago
Economy
Return:01/11/20
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 Ontario to Chicago?

FromToDatesFare TypePrice

Ontario (ONT)

Chicago (ORD)

Depart: 12/16/19

Return: 12/23/19

Roundtrip
from
USD254*
Viewed:10hoursago

Ontario (ONT)

Chicago (ORD)

Depart: 12/23/19

Return: 12/30/19

Roundtrip
from
USD254*
Viewed:10hoursago

Ontario (ONT)

Chicago (ORD)

Depart: 12/18/19

Return: 12/25/19

Roundtrip
from
USD254*
Viewed:10hoursago

Ontario (ONT)

Chicago (ORD)

Depart: 12/25/19

Return: 01/01/20

Roundtrip
from
USD254*
Viewed:10hoursago

Ontario (ONT)

Chicago (ORD)

Depart: 12/27/19

Return: 01/03/20

Roundtrip
from
USD254*
Viewed:10hoursago

Ontario (ONT)

Chicago (ORD)

Depart: 12/24/19

Return: 12/31/19

Roundtrip
from
USD254*
Viewed:10hoursago

Ontario (ONT)

Chicago (ORD)

Depart: 01/03/20

Return: 01/10/20

Roundtrip
from
USD254*
Viewed:10hoursago

Ontario (ONT)

Chicago (ORD)

Depart: 12/31/19

Return: 01/07/20

Roundtrip
from
USD254*
Viewed:10hoursago

Ontario (ONT)

Chicago (ORD)

Depart: 01/08/20

Return: 01/15/20

Roundtrip
from
USD254*
Viewed:10hoursago

Ontario (ONT)

Chicago (ORD)

Depart: 01/03/20

Return: 01/17/20

Roundtrip
from
USD254*
Viewed:1dayago

*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 Chicago

Saturday overcast clouds
31°F 12/14/19
Sunday few clouds
25°F 12/15/19
Monday overcast clouds
33°F 12/16/19
Tuesday sky is clear
28°F 12/17/19
Wednesday few clouds
18°F 12/18/19
Thursday scattered clouds
35°F 12/19/19
Friday light snow
37°F 12/20/19
Powered by: OpenWeatherMap.org