
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $102 (Kiwi.com) |
One-way from | $72 (Frontier) |
Popular in | June |
Cheapest in | January |
Average price | $414 |
Good round-trip deal | $127 or less |
Good one-way deal | $67 or less |
Fly from
Fly to
Route
Depart
Return
OntarioDenver
ONT - DEN
ONTDEN
Ontario
Wed 7/22
6:00 am-9:24 am
Nonstop2h 24m
Denver Intl
Thu 7/23
5:35 pm-7:32 am
1 stop14h 57m
OntarioDenver
ONT - DEN
ONTDEN
Ontario
Wed 10/7
5:30 am-12:35 pm
2 stops6h 05m
Denver Intl
Sat 10/10
8:45 am-10:05 am
Nonstop2h 20m
OntarioDenver
ONT - DEN
ONTDEN
Ontario
Sat 8/1
6:00 am-11:47 am
1 stop4h 47m
Denver Intl
Wed 8/5
6:28 pm-11:34 pm
1 stop6h 06m
OntarioDenver
ONT - DEN
ONTDEN
Ontario
Sat 8/15
1:06 pm-8:01 pm
1 stop5h 55m
Denver Intl
Tue 8/18
5:35 am-8:52 am
1 stop4h 17m
OntarioDenver
ONT - DEN
ONTDEN
Ontario
Thu 7/30
6:00 am-9:24 am
Nonstop2h 24m
Denver Intl
Thu 8/6
8:45 am-10:04 am
Nonstop2h 19m
OntarioDenver
ONT - DEN
ONTDEN
Ontario
Mon 8/17
1:06 pm-8:01 pm
1 stop5h 55m
Denver Intl
Tue 8/18
6:28 pm-11:34 pm
1 stop6h 06m
OntarioDenver
ONT - DEN
ONTDEN
Ontario
Sat 8/8
1:06 pm-8:01 pm
1 stop5h 55m
Denver Intl
Mon 8/10
5:35 am-8:52 am
1 stop4h 17m
OntarioDenver
ONT - DEN
ONTDEN
Ontario
Sat 9/26
1:04 pm-7:40 pm
1 stop5h 36m
Denver Intl
Mon 9/28
5:30 am-9:02 am
1 stop4h 32m
DallasDenver
DFW - DEN
DFWDEN
Dallas/Fort Worth
Wed 7/22
1:44 pm-2:55 pm
Nonstop2h 11m
Denver Intl
Wed 7/29
8:53 pm-11:59 pm
Nonstop2h 06m
ChicagoDenver
ORD - DEN
ORDDEN
Chicago O'Hare Intl
Tue 8/11
6:45 pm-11:34 pm
1 stop5h 49m
Denver Intl
Sat 8/15
6:05 am-1:50 pm
1 stop6h 45m
Currently, October is the cheapest month in which you can book a flight from USA to Denver (average of $234). Flying from USA to Denver in June is currently the most expensive (average of $356). 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.
Unlike in the afternoon, when flights are generally more expensive, you can save up to 20% on flights from USA to Denver by exploring options for tickets in the evening.
The most flights from US0 to DEN are scheduled on a Friday (100 on average). You will have fewer flight options on Sunday, which is when the least amount of flights are scheduled (58 on average).
About 17% of weekly flights between United States and Denver have experienced delays in the past year, with the average delay time being 145 minutes.
Historically, flights departing in the morning are less likely to be delayed, whereas flights leaving in the evening tend to experience delays more often.
Saturday tends to have the lowest number of delays on this route, whereas Sunday has historically faced a higher average of delays compared to other days of the week.
Over the last year, United Airlines have had the lowest number of delays on this route, with just 13% of flights being delayed.
The price you pay for your flight from USA to Denver may vary depending on when you book. For the best chance of a lower fare, look to book 29 days in advance of your trip. Fares are likely to increase a fortnight or so before your departure date.
Travelers seeking maximum savings on their USA to Denver flight should consider departing on Monday at noon when fares are most often at their lowest. Sunday afternoons flights should be avoided if possible as fares are typically the most expensive at this time.
Overall
Food
Crew
Boarding
Comfort
Entertainment
Reviews
Thomas,Dec 2025
SEA - DEN
Overall
Food
Crew
Boarding
Comfort
Entertainment
Reviews
Thomas,Dec 2025
SEA - DEN
Overall
Food
Crew
Boarding
Comfort
Entertainment
Reviews
Thomas,Dec 2025
SEA - DEN
Overall
Food
Crew
Boarding
Comfort
Entertainment
Reviews
Thomas,Dec 2025
SEA - DEN
Overall
Food
Crew
Boarding
Comfort
Entertainment
Reviews
Thomas,Dec 2025
SEA - DEN
Overall
Food
Crew
Boarding
Comfort
Entertainment
Reviews
Thomas,Dec 2025
SEA - DEN
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$55 | Average$199 | FlexibilityNo cancel fee | On-time62% | |
| Cheapest$69 | Average$204 | FlexibilityNo cancel fee | On-time85% | |
| Cheapest$88 | Average$316 | FlexibilityNo cancel fee | On-timeN/A | |
| Cheapest$100 | Average$287 | FlexibilityNo cancel fee | On-time62% | |
| Cheapest$106 | Average$318 | FlexibilityNo cancel fee | On-time71% | |
| Cheapest$117 | Average$301 | FlexibilityNo cancel fee | On-time75% | |
| Cheapest$117 | Average$297 | FlexibilityNo cancel fee | On-time63% | |
| Cheapest$125 | Average$332 | FlexibilityNo cancel fee | On-time69% |