Ontario to Chicago

ONTMDW

Fly from Ontario to Chicago starting at SAR 474 with Frontier Airlines.Best fare available on Aug 17, 2026.Limited seats. Better plans. Book before it's gone.

Ontario to Chicago cheapest flights this week

12 Aug
Southwest Airlines
09:40ONT
15:35MDW
1 StopSAR 747VIEW DEAL
13 Aug
Frontier Airlines
08:17ONT
18:32MDW
1 StopSAR 955VIEW DEAL
15 Aug
Frontier Airlines
08:17ONT
15:26MDW
1 StopSAR 629VIEW DEAL
17 Aug
Southwest Airlines
23:55ONT
03:45MDW
DirectSAR 544VIEW DEAL
17 Aug
Frontier Airlines
08:17ONT
15:22MDW
1 StopSAR 474VIEW DEAL
17 Aug
Southwest Airlines
17:45ONT
03:40MDW
1 StopSAR 544VIEW DEAL
18 Aug
Southwest Airlines
16:45ONT
03:40MDW
1 StopSAR 477VIEW DEAL
18 Aug
Southwest Airlines
06:40ONT
15:10MDW
1 StopSAR 544VIEW DEAL
21 Aug
Frontier Airlines
08:17ONT
18:31MDW
1 StopSAR 481VIEW DEAL
22 Aug
Southwest Airlines
10:15ONT
18:15MDW
1 StopSAR 485VIEW DEAL

Ontario to Chicago monthly flight fare trend

Aug
from SAR 329
Sep
from SAR 352
Oct
from SAR 426
Nov
from SAR 544
Dec
No flights
Jan
No flights

Airport Details

Origin

Ontario

Ontario International Airport (ONT)

Ontario, ONT
Zone

Los Angeles

Elev

944 ft

Destination

Chicago

Chicago Midway International Airport (MDW)

Chicago, MDW
Zone

Chicago

Elev

620 ft