
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $113 (Kiwi.com) |
One-way from | $25 (Super.com) |
Popular in | March |
Cheapest in | September |
Average price | $216 |
Good round-trip deal | $244 or less |
Good one-way deal | $134 or less |
Fly from
Fly to
Route
Depart
Return
OntarioDenver
ONT - DEN
ONTDEN
Ontario
Wed 7/1
7:20 pm-12:15 am
1 stop3h 55m
Denver Intl
Wed 7/8
9:35 am-2:05 pm
1 stop5h 30m
OntarioColorado Springs
ONT - COS
ONTCOS
Ontario
Sat 9/19
5:05 pm-10:29 pm
1 stop4h 24m
Colorado Springs
Sat 10/3
5:55 pm-11:44 pm
1 stop6h 49m
OntarioColorado Springs
ONT - COS
ONTCOS
Ontario
Sat 9/5
5:05 pm-10:29 pm
1 stop4h 24m
Colorado Springs
Mon 9/14
5:55 pm-11:44 pm
1 stop6h 49m
OntarioColorado Springs
ONT - COS
ONTCOS
Ontario
Wed 5/27
2:25 pm-8:45 pm
1 stop5h 20m
Colorado Springs
Thu 5/28
5:30 am-8:20 am
1 stop3h 50m
OntarioColorado Springs
ONT - COS
ONTCOS
Ontario
Sat 9/5
5:05 pm-10:29 pm
1 stop4h 24m
Colorado Springs
Sat 9/12
5:55 pm-10:44 pm
1 stop5h 49m
OntarioDenver
ONT - DEN
ONTDEN
Ontario
Mon 6/1
4:57 pm-10:40 pm
1 stop4h 43m
Denver Intl
Wed 6/3
6:05 am-12:33 pm
1 stop7h 28m
OntarioDenver
ONT - DEN
ONTDEN
Ontario
Thu 6/4
4:57 pm-10:40 pm
1 stop4h 43m
Denver Intl
Mon 6/8
5:40 am-8:50 am
1 stop4h 10m
OntarioDenver
ONT - DEN
ONTDEN
Ontario
Thu 6/4
6:30 pm-9:51 pm
Nonstop2h 21m
Denver Intl
Mon 6/8
7:24 pm-8:46 pm
Nonstop2h 22m
OntarioColorado Springs
ONT - COS
ONTCOS
Ontario
Thu 9/3
5:45 pm-11:35 pm
1 stop4h 50m
Colorado Springs
Tue 9/8
5:40 pm-8:55 pm
1 stop4h 15m
OntarioColorado Springs
ONT - COS
ONTCOS
Ontario
Wed 6/24
4:10 pm-11:45 pm
1 stop6h 35m
Colorado Springs
Sun 6/28
5:35 am-9:20 am
1 stop4h 45m
The price you pay for your flight from Ontario to Colorado may vary depending on when you book. For the best chance of a lower fare, look to book 66 days in advance of your trip. Fares are likely to increase a fortnight or so before your departure date.
Currently, January is the cheapest month in which you can book a flight from Ontario to Colorado (average of $39). Flying from Ontario to Colorado in November is currently the most expensive (average of $85). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.
It’s typically best to fly out from Ontario to Colorado in the evening. Doing so could potentially save you 51% on the flight price compared to flying at noon, which is usually more expensive.
Travelers seeking maximum savings on their Ontario to Colorado flight should consider departing on Saturday evenings when fares are most often at their lowest. Sunday at noon flights should be avoided if possible as fares are typically the most expensive at this time.
The most flights from ONT to USCO are scheduled on a Monday (13 on average). You will have fewer flight options on Tuesday, which is when the least amount of flights are scheduled (8 on average).
Boarding
Overall
Food
Comfort
Crew
Entertainment
Reviews
Thomas,Dec 2025
SEA - DEN
Boarding
Overall
Food
Comfort
Crew
Entertainment
Reviews
Thomas,Dec 2025
SEA - DEN
Boarding
Overall
Food
Comfort
Crew
Entertainment
Reviews
Thomas,Dec 2025
SEA - DEN
Boarding
Overall
Food
Comfort
Crew
Entertainment
Reviews
Thomas,Dec 2025
SEA - DEN
Boarding
Overall
Food
Comfort
Crew
Entertainment
Reviews
Thomas,Dec 2025
SEA - DEN
Boarding
Overall
Food
Comfort
Crew
Entertainment
Reviews
Thomas,Dec 2025
SEA - DEN
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$63 | Average$162 | FlexibilityNo cancel fee | On-time62% | |
| Cheapest$157 | Average$356 | FlexibilityNo cancel fee | On-time69% | |
| Cheapest$157 | Average$328 | FlexibilityNo cancel fee | On-time63% | |
| Cheapest$172 | Average$300 | FlexibilityNo cancel fee | On-timeN/A | |
| Cheapest$211 | Average$363 | FlexibilityNo cancel fee | On-time71% |