Frontier's UpFront Plus seats offer a guaranteed empty middle seat for extra comfort.
Early morning flights have a better chance of being on time, reducing delays.

Most accurate provider | eDreams 3 stars |
|---|---|
Most trusted provider | eDreams 3 stars |
Round-trip from | $93 (Kiwi.com) |
One-way from | $46 (Kiwi.com) |
Popular in | December |
Cheapest in | July |
Average price | $185 |
Good round-trip deal | $252 or less |
Good one-way deal | $157 or less |
Fly from
Fly to
Route
Depart
Return
Price
Sioux FallsDenver
FSD - DEN
FSDDEN
Sioux Falls Joe Foss Field
Sun 1/11
8:17 pm-9:01 pm
Nonstop1h 44m
Denver Intl
Thu 1/15
4:45 pm-7:23 pm
Nonstop1h 38m
Sioux FallsDenver
FSD - DEN
FSDDEN
Sioux Falls Joe Foss Field
Thu 12/4
9:00 am-9:59 am
Nonstop1h 59m
Denver Intl
Sat 12/6
10:05 am-12:51 pm
Nonstop1h 46m
Sioux FallsDenver
FSD - DEN
FSDDEN
Sioux Falls Joe Foss Field
Fri 4/10
9:14 am-9:59 am
Nonstop1h 45m
Denver Intl
Tue 4/14
8:30 pm-10:56 pm
Nonstop1h 26m
Sioux FallsDenver
FSD - DEN
FSDDEN
Sioux Falls Joe Foss Field
Fri 1/16
9:00 am-10:06 am
Nonstop2h 06m
Denver Intl
Mon 1/19
8:50 pm-11:44 pm
Nonstop1h 54m
Sioux FallsDenver
FSD - DEN
FSDDEN
Sioux Falls Joe Foss Field
Sun 11/23
1:47 pm-2:45 pm
Nonstop1h 58m
Denver Intl
Sun 11/30
9:01 pm-11:42 pm
Nonstop1h 41m
Sioux FallsDenver
FSD - DEN
FSDDEN
Sioux Falls Joe Foss Field
Fri 12/12
9:00 am-9:59 am
Nonstop1h 59m
Denver Intl
Mon 12/15
9:00 pm-11:43 pm
Nonstop1h 43m
Sioux FallsDenver
FSD - DEN
FSDDEN
Sioux Falls Joe Foss Field
Thu 1/8
1:40 pm-2:48 pm
Nonstop2h 08m
Denver Intl
Mon 1/12
5:57 pm-8:39 pm
Nonstop1h 42m
Sioux FallsDenver
FSD - DEN
FSDDEN
Sioux Falls Joe Foss Field
Tue 12/23
8:50 am-9:57 am
Nonstop2h 07m
Denver Intl
Fri 12/26
5:25 pm-8:00 pm
Nonstop1h 35m
Sioux FallsDenver
FSD - DEN
FSDDEN
Sioux Falls Joe Foss Field
Mon 12/22
8:50 am-9:57 am
Nonstop2h 07m
Denver Intl
Thu 1/1
5:25 pm-8:00 pm
Nonstop1h 35m
Sioux FallsDenver
FSD - DEN
FSDDEN
Sioux Falls Joe Foss Field
Sat 12/13
3:00 pm-8:02 pm
1 stop6h 02m
Denver Intl
Sun 12/14
5:45 am-12:48 pm
1 stop6h 03m
| Provider | Price Accuracy | Trust Score* |
|---|---|---|
| Price Accuracy2 stars | Trust Score*3 stars | |
| Price Accuracy3 stars | Trust Score*1 star | |
| Price Accuracy3 stars | Trust Score*3 stars | |
| Price Accuracy3 stars | Trust Score*2 stars | |
| Price Accuracy1 star | Trust Score*3 stars | |
| Price Accuracy3 stars | Trust Score*3 stars | |
| Price Accuracy- | Trust Score*1 star |
The best time to book flights from Sioux Falls to Denver is 60 days before your desired departure date. The cost of your flight will likely increase significantly if you book two weeks in advance of your flight.
Currently, March is the cheapest month in which you can book a flight from Sioux Falls to Denver (average of $46). Flying from Sioux Falls to Denver in August is currently the most expensive (average of $112). 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 optimal to fly from Sioux Falls to Denver in the evening. By choosing this option you can save up to 59% on the cost of your flight, compared to a flight in the morning.
Travelers seeking maximum savings on their Sioux Falls to Denver flight should consider departing on Thursday evenings when fares are most often at their lowest. Sunday evenings flights should be avoided if possible as fares are typically the most expensive at this time.
Crew
Overall
Entertainment
Boarding
Comfort
Food
Reviews
Jim,Nov 2025
AVL - ATL
Crew
Overall
Entertainment
Boarding
Comfort
Food
Reviews
Jim,Nov 2025
AVL - ATL
Crew
Overall
Entertainment
Boarding
Comfort
Food
Reviews
Jim,Nov 2025
AVL - ATL
Crew
Overall
Entertainment
Boarding
Comfort
Food
Reviews
Jim,Nov 2025
AVL - ATL
Crew
Overall
Entertainment
Boarding
Comfort
Food
Reviews
Jim,Nov 2025
AVL - ATL
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$57 | Average$138 | FlexibilityNo cancel fee | On-time62% | |
| Cheapest$188 | Average$279 | FlexibilityNo cancel fee | On-time69% | |
| Cheapest$198 | Average$228 | FlexibilityNo cancel fee | On-time71% | |
| Cheapest$202 | Average$208 | FlexibilityNo cancel fee | On-timeN/A |