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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 45m DEN Airport
23:49
05/12/2026
+1
ONT
Ontario International Airport
₹12,691
per person
Select →
✕ Non-refundable
Frontier Airlines
F9-3135
08:30
05/11/2026
ORD
Chicago Midway International Airport
23h 5m
1 Stop
⏱ IAH · 18h 10m IAH Airport
07:35
05/12/2026
+1
ONT
Ontario International Airport
₹12,691
per person
Select →
✕ Non-refundable
Frontier Airlines
F9-1483
21:37
05/11/2026
ORD
Chicago Midway International Airport
12h 28m
1 Stop
⏱ DEN · 8h 57m DEN Airport
10:05
05/12/2026
+1
ONT
Ontario International Airport
₹12,691
per person
Select →
✕ Non-refundable
Frontier Airlines
F9-3241
09:30
05/11/2026
ORD
Chicago Midway International Airport
9h 41m
1 Stop
⏱ DFW · 5h 15m DFW Airport
19:11
05/11/2026
ONT
Ontario International Airport
₹14,562
per person
Select →
✕ Non-refundable
13:22
05/11/2026
MDW
Chicago Midway International Airport
8h 23m
2 Stops
⏱ DTW · 2h 8m DTW Airport ⏱ SLC · 1h 9m SLC Airport
21:45
05/11/2026
BUR
Ontario International Airport
₹16,291
per person
Select →
✕ Non-refundable
Southwest Airlines
WN-2896
06:15
05/11/2026
MDW
Chicago Midway International Airport
08:40
05/11/2026
LAX
Ontario International Airport
₹16,623
per person
Select →
✕ Non-refundable 5 fare options
Southwest Airlines
WN-3290
21:45
05/11/2026
MDW
Chicago Midway International Airport
00:10
05/12/2026
+1
LAX
Ontario International Airport
₹16,623
per person
Select →
✕ Non-refundable 🔥 Last 2 seats 5 fare options
19:45
05/11/2026
ORD
Chicago Midway International Airport
4h 8m
1 Stop
⏱ SLC · 0h 35m SLC Airport
23:53
05/11/2026
LAX
Ontario International Airport
₹16,635
per person
Select →
✕ Non-refundable
06:24
05/11/2026
ORD
Chicago Midway International Airport
4h 31m
1 Stop
⏱ MSP · 0h 55m MSP Airport
10:55
05/11/2026
LAX
Ontario International Airport
₹16,635
per person
Select →
✕ Non-refundable
19:13
05/11/2026
MDW
Chicago Midway International Airport
4h 37m
1 Stop
⏱ MSP · 0h 57m MSP Airport
23:50
05/11/2026
LAX
Ontario International Airport
₹16,635
per person
Select →
✕ Non-refundable
Southwest Airlines
WN-1357
06:40
05/11/2026
MDW
Chicago Midway International Airport
10h 10m
2 Stops
⏱ SAN · 1h 35m SAN Airport ⏱ SMF · 3h 20m SMF Airport
16:50
05/11/2026
ONT
Ontario International Airport
₹17,352
per person
Select →
✕ Non-refundable 4 fare options
Southwest Airlines
WN-1357
06:40
05/11/2026
MDW
Chicago Midway International Airport
8h 20m
2 Stops
⏱ SAN · 1h 35m SAN Airport ⏱ SMF · 1h 30m SMF Airport
15:00
05/11/2026
ONT
Ontario International Airport
₹17,352
per person
Select →
✕ Non-refundable 4 fare options
Southwest Airlines
WN-3242
11:00
05/11/2026
MDW
Chicago Midway International Airport
10h 20m
2 Stops
⏱ BUR · 1h 55m BUR Airport ⏱ OAK · 3h 20m OAK Airport
21:20
05/11/2026
ONT
Ontario International Airport
₹17,352
per person
Select →
✕ Non-refundable 🔥 Last 1 seats 4 fare options
Southwest Airlines
WN-3227
16:50
05/11/2026
MDW
Chicago Midway International Airport
6h 15m
2 Stops
⏱ AUS · 0h 55m AUS Airport ⏱ PHX · 0h 55m PHX Airport
23:05
05/11/2026
ONT
Ontario International Airport
₹17,352
per person
Select →
✕ Non-refundable 🔥 Last 5 seats 4 fare options
Southwest Airlines
WN-898
18:10
05/11/2026
MDW
Chicago Midway International Airport
20:35
05/11/2026
LAX
Ontario International Airport
₹17,558
per person
Select →
✕ Non-refundable 🔥 Last 2 seats 5 fare options
Southwest Airlines
WN-1859
05:10
05/11/2026
MDW
Chicago Midway International Airport
4h 20m
1 Stop
⏱ LAS · 1h 15m LAS Airport
09:30
05/11/2026
BUR
Ontario International Airport
₹17,664
per person
Select →
✓ Refundable 🔥 Last 1 seats 4 fare options
Southwest Airlines
WN-3242
11:00
05/11/2026
MDW
Chicago Midway International Airport
10h 20m
2 Stops
⏱ BUR · 4h 10m BUR Airport ⏱ OAK · 1h 10m OAK Airport
21:20
05/11/2026
ONT
Ontario International Airport
₹17,880
per person
Select →
✕ Non-refundable 🔥 Last 1 seats 4 fare options
Southwest Airlines
WN-1763
08:35
05/11/2026
MDW
Chicago Midway International Airport
12:35
05/11/2026
LAX
Ontario International Airport
₹18,021
per person
Select →
✕ 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 40m PHX Airport
12:35
05/11/2026
LAX
Ontario International Airport
₹18,083
per person
Select →
✓ Refundable 🔥 Last 4 seats 4 fare options
20:09
05/11/2026
ORD
Chicago Midway International Airport
22:35
05/11/2026
ONT
Ontario International Airport
₹18,106
per person
Select →
✕ Non-refundable 🔥 Last 4 seats 4 fare options
Southwest Airlines
WN-3340
05:25
05/11/2026
MDW
Chicago Midway International Airport
4h 10m
1 Stop
⏱ PHX · 0h 50m PHX Airport
09:35
05/11/2026
SNA
Ontario International Airport
₹18,132
per person
Select →
✓ Refundable 🔥 Last 5 seats 4 fare options
Southwest Airlines
WN-1696
16:10
05/11/2026
MDW
Chicago Midway International Airport
4h 10m
1 Stop
⏱ PHX · 1h 10m PHX Airport
20:20
05/11/2026
SNA
Ontario International Airport
₹18,132
per person
Select →
✓ Refundable 4 fare options
Southwest Airlines
WN-1696
16:10
05/11/2026
MDW
Chicago Midway International Airport
17h 55m
1 Stop
⏱ PHX · 14h 50m PHX Airport
10:05
05/12/2026
+1
ONT
Ontario International Airport
₹18,430
per person
Select →
✕ Non-refundable 4 fare options
Southwest Airlines
WN-1696
16:10
05/11/2026
MDW
Chicago Midway International Airport
22h 55m
1 Stop
⏱ PHX · 20h 0m PHX Airport
15:05
05/12/2026
+1
ONT
Ontario International Airport
₹18,430
per person
Select →
✕ Non-refundable 🔥 Last 2 seats 4 fare options
Southwest Airlines
WN-1696
16:10
05/11/2026
MDW
Chicago Midway International Airport
19h 45m
1 Stop
⏱ PHX · 16h 45m PHX Airport
11:55
05/12/2026
+1
ONT
Ontario International Airport
₹18,430
per person
Select →
✕ Non-refundable 4 fare options
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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,USA — 2739.56 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 .
Before you book
Compare nearby dates The date strip above lets you scan nearby fares without restarting the search.
Open full search for more control Route page shows a limited live set. Full search opens the complete inventory with fresh results.
Check fare details Each result shows baggage, refundability and fare details before you proceed.
More flights from Chicago (MDW)
68 routes
More flights from Ontario (ONT)
15 routes
❓ Frequently asked questions — Chicago to Ontario flights
▼ Is it worth booking Chicago to Ontario flights in advance?
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.
▼ How far is Chicago from Ontario by air?
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.
▼ Are there non-stop flights from MDW to ONT?
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.
▼ What is the cheapest day to fly from Chicago to Ontario?
Mid-week departures often show lower prices than weekend travel on many routes. Use the date strip above to compare nearby days quickly.