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 | $98 (Kiwi.com) |
One-way from | $39 (Kiwi.com) |
Popular in | November |
Cheapest in | July |
Average price | $249 |
Good round-trip deal | $268 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
Tue 12/23
8:50 am-9:57 am
Nonstop2h 07m
Denver Intl
Sat 12/27
5:25 pm-8:00 pm
Nonstop1h 35m
Sioux FallsDenver
FSD - DEN
FSDDEN
Sioux Falls Joe Foss Field
Wed 12/24
8:50 am-9:57 am
Nonstop2h 07m
Denver Intl
Wed 12/31
9:05 pm-11:55 pm
Nonstop1h 50m
Sioux FallsDenver
FSD - DEN
FSDDEN
Sioux Falls Joe Foss Field
Fri 3/27
9:00 am-10:04 am
Nonstop2h 04m
Denver Intl
Mon 3/30
9:00 pm-11:43 pm
Nonstop1h 43m
Sioux FallsDenver
FSD - DEN
FSDDEN
Sioux Falls Joe Foss Field
Tue 1/6
10:50 am-2:00 pm
1 stop4h 10m
Denver Intl
Wed 1/14
11:33 am-7:30 pm
1 stop6h 57m
Sioux FallsDenver
FSD - DEN
FSDDEN
Sioux Falls Joe Foss Field
Wed 1/21
11:02 am-2:00 pm
1 stop3h 58m
Denver Intl
Sat 1/24
2:42 pm-7:53 pm
1 stop4h 11m
Sioux FallsDenver
FSD - DEN
FSDDEN
Sioux Falls Joe Foss Field
Tue 4/7
8:05 am-1:58 pm
1 stop6h 53m
Denver Intl
Sun 4/19
6:10 am-12:28 pm
1 stop5h 18m
Sioux FallsDenver
FSD - DEN
FSDDEN
Sioux Falls Joe Foss Field
Sat 12/20
8:50 am-9:57 am
Nonstop2h 07m
Denver Intl
Sun 12/28
9:05 pm-11:55 pm
Nonstop1h 50m
Sioux FallsDenver
FSD - DEN
FSDDEN
Sioux Falls Joe Foss Field
Thu 1/8
10:50 am-2:00 pm
1 stop4h 10m
Denver Intl
Mon 1/12
5:51 pm-11:04 pm
1 stop4h 13m
Sioux FallsDenver
FSD - DEN
FSDDEN
Sioux Falls Joe Foss Field
Thu 4/9
1:34 pm-7:51 pm
1 stop7h 17m
Denver Intl
Wed 4/15
6:10 am-12:28 pm
1 stop5h 18m
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
| 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 58% 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.
Overall
Entertainment
Boarding
Crew
Comfort
Food
Reviews
Jim,Nov 2025
AVL - ATL
Overall
Entertainment
Boarding
Crew
Comfort
Food
Reviews
Jim,Nov 2025
AVL - ATL
Overall
Entertainment
Boarding
Crew
Comfort
Food
Reviews
Jim,Nov 2025
AVL - ATL
Overall
Entertainment
Boarding
Crew
Comfort
Food
Reviews
Jim,Nov 2025
AVL - ATL
Overall
Entertainment
Boarding
Crew
Comfort
Food
Reviews
Jim,Nov 2025
AVL - ATL
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$58 | Average$138 | FlexibilityNo cancel fee | On-time62% | |
| Cheapest$187 | Average$280 | FlexibilityNo cancel fee | On-time69% | |
| Cheapest$198 | Average$228 | FlexibilityNo cancel fee | On-time71% | |
| Cheapest$202 | Average$208 | FlexibilityNo cancel fee | On-timeN/A |