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Chicago to Ontario flight ticket price

Compare live prices for MDW to ONT. Use the search panel to change origin, destination, passengers, cabin and trip type instantly.
MDW → ONT Approx. 2739.56 km 11 May 2026 Live inventory
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Showing 25 of 115 live flights
Frontier Airlines
F9-1483
21:37
05/11/2026
ORD
Chicago Midway International Airport
26h 12m
1 Stop
⏱ DEN · 22h 45mDEN Airport
23:49
05/12/2026
+1
ONT
Ontario International Airport
₹12,691
per person
✕ Non-refundable
Frontier Airlines
F9-3135
08:30
05/11/2026
ORD
Chicago Midway International Airport
23h 5m
1 Stop
⏱ IAH · 18h 10mIAH Airport
07:35
05/12/2026
+1
ONT
Ontario International Airport
₹12,691
per person
✕ Non-refundable
Frontier Airlines
F9-1483
21:37
05/11/2026
ORD
Chicago Midway International Airport
12h 28m
1 Stop
⏱ DEN · 8h 57mDEN Airport
10:05
05/12/2026
+1
ONT
Ontario International Airport
₹12,691
per person
✕ Non-refundable
Frontier Airlines
F9-3241
09:30
05/11/2026
ORD
Chicago Midway International Airport
9h 41m
1 Stop
⏱ DFW · 5h 15mDFW Airport
19:11
05/11/2026
ONT
Ontario International Airport
₹14,562
per person
✕ Non-refundable
Delta Air Lines
DL-4688
13:22
05/11/2026
MDW
Chicago Midway International Airport
8h 23m
2 Stops
⏱ DTW · 2h 8mDTW Airport⏱ SLC · 1h 9mSLC Airport
21:45
05/11/2026
BUR
Ontario International Airport
₹16,291
per person
✕ Non-refundable
Southwest Airlines
WN-2896
06:15
05/11/2026
MDW
Chicago Midway International Airport
2h 25m
Non-stop
08:40
05/11/2026
LAX
Ontario International Airport
₹16,623
per person
✕ Non-refundable5 fare options
Southwest Airlines
WN-3290
21:45
05/11/2026
MDW
Chicago Midway International Airport
2h 25m
Non-stop
00:10
05/12/2026
+1
LAX
Ontario International Airport
₹16,623
per person
✕ Non-refundable🔥 Last 2 seats5 fare options
Delta Air Lines
DL-2377
19:45
05/11/2026
ORD
Chicago Midway International Airport
4h 8m
1 Stop
⏱ SLC · 0h 35mSLC Airport
23:53
05/11/2026
LAX
Ontario International Airport
₹16,635
per person
✕ Non-refundable
Delta Air Lines
DL-3813
06:24
05/11/2026
ORD
Chicago Midway International Airport
4h 31m
1 Stop
⏱ MSP · 0h 55mMSP Airport
10:55
05/11/2026
LAX
Ontario International Airport
₹16,635
per person
✕ Non-refundable
Delta Air Lines
DL-4716
19:13
05/11/2026
MDW
Chicago Midway International Airport
4h 37m
1 Stop
⏱ MSP · 0h 57mMSP Airport
23:50
05/11/2026
LAX
Ontario International Airport
₹16,635
per person
✕ Non-refundable
Southwest Airlines
WN-1357
06:40
05/11/2026
MDW
Chicago Midway International Airport
10h 10m
2 Stops
⏱ SAN · 1h 35mSAN Airport⏱ SMF · 3h 20mSMF Airport
16:50
05/11/2026
ONT
Ontario International Airport
₹17,352
per person
✕ Non-refundable4 fare options
Southwest Airlines
WN-1357
06:40
05/11/2026
MDW
Chicago Midway International Airport
8h 20m
2 Stops
⏱ SAN · 1h 35mSAN Airport⏱ SMF · 1h 30mSMF Airport
15:00
05/11/2026
ONT
Ontario International Airport
₹17,352
per person
✕ Non-refundable4 fare options
Southwest Airlines
WN-3242
11:00
05/11/2026
MDW
Chicago Midway International Airport
10h 20m
2 Stops
⏱ BUR · 1h 55mBUR Airport⏱ OAK · 3h 20mOAK Airport
21:20
05/11/2026
ONT
Ontario International Airport
₹17,352
per person
✕ Non-refundable🔥 Last 1 seats4 fare options
Southwest Airlines
WN-3227
16:50
05/11/2026
MDW
Chicago Midway International Airport
6h 15m
2 Stops
⏱ AUS · 0h 55mAUS Airport⏱ PHX · 0h 55mPHX Airport
23:05
05/11/2026
ONT
Ontario International Airport
₹17,352
per person
✕ Non-refundable🔥 Last 5 seats4 fare options
Southwest Airlines
WN-898
18:10
05/11/2026
MDW
Chicago Midway International Airport
2h 25m
Non-stop
20:35
05/11/2026
LAX
Ontario International Airport
₹17,558
per person
✕ Non-refundable🔥 Last 2 seats5 fare options
Southwest Airlines
WN-1859
05:10
05/11/2026
MDW
Chicago Midway International Airport
4h 20m
1 Stop
⏱ LAS · 1h 15mLAS Airport
09:30
05/11/2026
BUR
Ontario International Airport
₹17,664
per person
✓ Refundable🔥 Last 1 seats4 fare options
Southwest Airlines
WN-3242
11:00
05/11/2026
MDW
Chicago Midway International Airport
10h 20m
2 Stops
⏱ BUR · 4h 10mBUR Airport⏱ OAK · 1h 10mOAK Airport
21:20
05/11/2026
ONT
Ontario International Airport
₹17,880
per person
✕ Non-refundable🔥 Last 1 seats4 fare options
Southwest Airlines
WN-1763
08:35
05/11/2026
MDW
Chicago Midway International Airport
4h 0m
Non-stop
12:35
05/11/2026
LAX
Ontario International Airport
₹18,021
per person
✕ Non-refundable🔥 Last 4 seats
Southwest Airlines
WN-1763
08:35
05/11/2026
MDW
Chicago Midway International Airport
4h 0m
1 Stop
⏱ PHX · 0h 40mPHX Airport
12:35
05/11/2026
LAX
Ontario International Airport
₹18,083
per person
✓ Refundable🔥 Last 4 seats4 fare options
United Airlines
UA-658
20:09
05/11/2026
ORD
Chicago Midway International Airport
2h 26m
Non-stop
22:35
05/11/2026
ONT
Ontario International Airport
₹18,106
per person
✕ Non-refundable🔥 Last 4 seats4 fare options
Southwest Airlines
WN-3340
05:25
05/11/2026
MDW
Chicago Midway International Airport
4h 10m
1 Stop
⏱ PHX · 0h 50mPHX Airport
09:35
05/11/2026
SNA
Ontario International Airport
₹18,132
per person
✓ Refundable🔥 Last 5 seats4 fare options
Southwest Airlines
WN-1696
16:10
05/11/2026
MDW
Chicago Midway International Airport
4h 10m
1 Stop
⏱ PHX · 1h 10mPHX Airport
20:20
05/11/2026
SNA
Ontario International Airport
₹18,132
per person
✓ Refundable4 fare options
Southwest Airlines
WN-1696
16:10
05/11/2026
MDW
Chicago Midway International Airport
17h 55m
1 Stop
⏱ PHX · 14h 50mPHX Airport
10:05
05/12/2026
+1
ONT
Ontario International Airport
₹18,430
per person
✕ Non-refundable4 fare options
Southwest Airlines
WN-1696
16:10
05/11/2026
MDW
Chicago Midway International Airport
22h 55m
1 Stop
⏱ PHX · 20h 0mPHX Airport
15:05
05/12/2026
+1
ONT
Ontario International Airport
₹18,430
per person
✕ Non-refundable🔥 Last 2 seats4 fare options
Southwest Airlines
WN-1696
16:10
05/11/2026
MDW
Chicago Midway International Airport
19h 45m
1 Stop
⏱ PHX · 16h 45mPHX Airport
11:55
05/12/2026
+1
ONT
Ontario International Airport
₹18,430
per person
✕ Non-refundable4 fare options
😕 No flights match your filters.
Chicago (MDW)
📍 Chicago Midway International Airport
🌍 United States
🕐 GMT -6
📐 Latitude: 41.785999
📐 Longitude: -87.752403
Ontario (ONT)
📍 Ontario International Airport
🌍 United States
🕐 GMT -8
📐 Latitude: 34.055999755859375
📐 Longitude: -117.60099792480469

✈ Distance: Chicago,USA to Ontario,USA2739.56 km

📅 Results on this page are loaded for 11 May 2026. Click View all flights for the complete live search.

Chicago to Ontario — what to expect when booking

The MDW–ONT route is served by multiple carriers throughout the year. Fares on this route can move quickly — a price available now may not be there 30 minutes later.

If your dates are flexible, try shifting your departure by a day or two using the date strip above. Mid-week departures often show lower base fares compared to weekend starts on many routes.

The distance between Chicago,USA and Ontario,USA is approximately 2739.56 km.

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❓ Frequently asked questions — Chicago to Ontario flights

Generally yes — fares on most routes are most competitive around 4–6 weeks before departure. Booking earlier usually means better availability and a lower base fare when your dates are fixed.

The straight-line distance between Chicago,USA (MDW) and Ontario,USA (ONT) is approximately 2739.56 km. Actual flying distance may vary slightly depending on routing.

Non-stop availability on this route varies by airline schedule and season. Use the filters below to quickly check whether direct options are available on your selected date.

Mid-week departures often show lower prices than weekend travel on many routes. Use the date strip above to compare nearby days quickly.