Compare live prices for DEN to ONT on
Wed, 15 Apr 2026. Use the search panel
to change origin, destination, passengers, cabin and trip type instantly.
DEN → ONTApprox. 1315.73 km15 Apr 2026Live inventory
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Showing 25
of 141
live flights
Southwest Airlines
WN-1983
09:10
04/15/2026
DEN
1h 25m
Non-stop
10:35
04/15/2026
LGB
₹11,009
per person
✕ Non-refundable5 fare options
Southwest Airlines
WN-1921
13:00
04/15/2026
DEN
1h 25m
Non-stop
14:25
04/15/2026
LGB
₹11,009
per person
✕ Non-refundable5 fare options
Southwest Airlines
WN-2993
15:05
04/15/2026
DEN
1h 30m
Non-stop
16:35
04/15/2026
LGB
₹11,009
per person
✕ Non-refundable5 fare options
Delta Air Lines
DL-2002
07:25
04/15/2026
DEN
1h 36m
Non-stop
09:01
04/15/2026
LAX
₹11,971
per person
✕ Non-refundable4 fare options
Delta Air Lines
DL-3990
18:51
04/15/2026
DEN
1h 42m
Non-stop
20:33
04/15/2026
LAX
₹11,971
per person
✕ Non-refundable4 fare options
Southwest Airlines
WN-106
08:55
04/15/2026
DEN
1h 20m
Non-stop
10:15
04/15/2026
ONT
₹12,874
per person
✕ Non-refundable7 fare options
Southwest Airlines
WN-1708
20:30
04/15/2026
DEN
1h 20m
Non-stop
21:50
04/15/2026
ONT
₹12,874
per person
✕ Non-refundable7 fare options
Southwest Airlines
WN-1353
13:45
04/15/2026
DEN
1h 25m
Non-stop
15:10
04/15/2026
ONT
₹12,874
per person
✕ Non-refundable7 fare options
Southwest Airlines
WN-963
19:15
04/15/2026
DEN
1h 30m
Non-stop
20:45
04/15/2026
LAX
₹12,874
per person
✕ Non-refundable5 fare options
Southwest Airlines
WN-158
20:35
04/15/2026
DEN
1h 30m
Non-stop
22:05
04/15/2026
LAX
₹12,874
per person
✕ Non-refundable5 fare options
American Airlines
AA-3151
14:13
04/15/2026
DEN
4h 17m
1 Stop
⏱ PHX · 1h 54m
18:30
04/15/2026
ONT
₹12,895
per person
✕ Non-refundable🔥 Last 1 seats8 fare options
Delta Air Lines
DL-2544
05:30
04/15/2026
DEN
6h 27m
1 Stop
⏱ SLC · 3h 52m
11:57
04/15/2026
LGB
₹13,907
per person
✕ Non-refundable4 fare options
Southwest Airlines
WN-1909
10:10
04/15/2026
DEN
3h 10m
Non-stop
13:20
04/15/2026
LAX
₹14,266
per person
✕ Non-refundable🔥 Last 1 seats5 fare options
Southwest Airlines Dallas
WN-1779
06:15
04/15/2026
DEN
6h 0m
1 Stop
⏱ AUS · 1h 45m
12:15
04/15/2026
ONT
₹14,710
per person
✕ Non-refundable2 fare options
Southwest Airlines Dallas
WN-4540
17:10
04/15/2026
DEN
5h 0m
1 Stop
⏱ OAK · 2h 0m
22:10
04/15/2026
ONT
₹14,710
per person
✕ Non-refundable2 fare options
Southwest Airlines Dallas
WN-2073
09:05
04/15/2026
DEN
4h 40m
1 Stop
⏱ SJC · 1h 55m
13:45
04/15/2026
ONT
₹14,710
per person
✕ Non-refundable2 fare options
Southwest Airlines Dallas
WN-636
13:05
04/15/2026
DEN
6h 5m
1 Stop
⏱ SMF · 3h 10m
19:10
04/15/2026
ONT
₹14,710
per person
✕ Non-refundable2 fare options
Southwest Airlines Dallas
WN-840
15:35
04/15/2026
DEN
5h 15m
1 Stop
⏱ SMF · 2h 25m
20:50
04/15/2026
ONT
₹14,710
per person
✕ Non-refundable2 fare options
Southwest Airlines Dallas
WN-840
15:35
04/15/2026
DEN
3h 35m
1 Stop
⏱ SMF · 0h 40m
19:10
04/15/2026
ONT
₹14,710
per person
✕ Non-refundable2 fare options
Southwest Airlines Dallas
WN-1316
09:20
04/15/2026
DEN
5h 45m
1 Stop
⏱ PHX · 3h 40m
15:05
04/15/2026
ONT
₹14,710
per person
✕ Non-refundable🔥 Last 3 seats2 fare options
Southwest Airlines Dallas
WN-1880
06:45
04/15/2026
DEN
5h 10m
1 Stop
⏱ PHX · 3h 0m
11:55
04/15/2026
ONT
₹14,710
per person
✕ Non-refundable2 fare options
Southwest Airlines Dallas
WN-1159
16:25
04/15/2026
DEN
5h 5m
1 Stop
⏱ PHX · 2h 55m
21:30
04/15/2026
ONT
₹14,710
per person
✕ Non-refundable2 fare options
Southwest Airlines Dallas
WN-1200
10:40
04/15/2026
DEN
4h 25m
1 Stop
⏱ PHX · 2h 15m
15:05
04/15/2026
ONT
₹14,710
per person
✕ Non-refundable2 fare options
Southwest Airlines Dallas
WN-2006
07:35
04/15/2026
DEN
4h 20m
1 Stop
⏱ PHX · 2h 5m
11:55
04/15/2026
ONT
₹14,710
per person
✕ Non-refundable2 fare options
Southwest Airlines Dallas
WN-1331
17:15
04/15/2026
DEN
4h 15m
1 Stop
⏱ PHX · 2h 10m
21:30
04/15/2026
ONT
₹14,710
per person
✕ Non-refundable2 fare options
😕 No flights match your filters.
Denver (DEN)
📍 Denver International Airport
🌍 United States
🕐 GMT -7
📐 Latitude: 39.861698150635
📐 Longitude: -104.672996521
Ontario (ONT)
📍 Ontario International Airport
🌍 United States
🕐 GMT -8
📐 Latitude: 34.055999755859375
📐 Longitude: -117.60099792480469
✈ Distance: Denver,USA to Ontario,USA — 1315.73 km
📅 Results on this page are loaded for 15 Apr 2026. Click View all flights for the complete live search.
Denver to Ontario — what to expect when booking
The DEN–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 Denver,USA and Ontario,USA is approximately
1315.73 km.
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❓ Frequently asked questions — Denver 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 Denver,USA (DEN) and Ontario,USA (ONT) is approximately 1315.73 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.