United's Economy Plus offers extra legroom seats towards the front of the economy cabin.
United's MileagePlus program allows pooling miles for family or friends' tickets.

Most accurate provider | eDreams 3 stars |
|---|---|
Most trusted provider | eDreams 3 stars |
Round-trip from | $97 (Kiwi.com) |
One-way from | $44 (Priceline) |
Popular in | December |
Cheapest in | July |
Average price | $244 |
Good round-trip deal | $270 or less |
Good one-way deal | $136 or less |
Fly from
Fly to
Route
Depart
Return
Price
Sioux FallsDenver
FSD - DEN
FSDDEN
Sioux Falls Joe Foss Field
Fri 5/8
9:14 am-9:59 am
Nonstop1h 45m
Denver Intl
Sun 5/10
8:00 am-10:37 am
Nonstop1h 37m
Sioux FallsDenver
FSD - DEN
FSDDEN
Sioux Falls Joe Foss Field
Fri 1/30
1:40 pm-2:48 pm
Nonstop2h 08m
Denver Intl
Fri 2/6
8:50 pm-11:44 pm
Nonstop1h 54m
Sioux FallsDenver
FSD - DEN
FSDDEN
Sioux Falls Joe Foss Field
Sun 2/1
1:07 pm-4:41 pm
1 stop4h 34m
Denver Intl
Sat 2/7
5:49 pm-11:04 pm
1 stop4h 15m
Sioux FallsDenver
FSD - DEN
FSDDEN
Sioux Falls Joe Foss Field
Sat 1/31
4:17 pm-8:05 pm
1 stop4h 48m
Denver Intl
Fri 2/6
3:00 pm-11:04 pm
1 stop7h 04m
Sioux FallsDenver
FSD - DEN
FSDDEN
Sioux Falls Joe Foss Field
Wed 1/28
4:17 pm-8:05 pm
1 stop4h 48m
Denver Intl
Fri 2/6
5:49 pm-11:04 pm
1 stop4h 15m
Sioux FallsDenver
FSD - DEN
FSDDEN
Sioux Falls Joe Foss Field
Sat 1/31
4:17 pm-8:05 pm
1 stop4h 48m
Denver Intl
Sat 2/7
5:49 pm-11:04 pm
1 stop4h 15m
Sioux FallsDenver
FSD - DEN
FSDDEN
Sioux Falls Joe Foss Field
Thu 1/29
1:02 pm-4:41 pm
1 stop4h 39m
Denver Intl
Thu 2/5
7:15 am-12:22 pm
1 stop4h 07m
Sioux FallsDenver
FSD - DEN
FSDDEN
Sioux Falls Joe Foss Field
Fri 6/5
9:14 am-9:59 am
Nonstop1h 45m
Denver Intl
Sun 6/7
8:00 am-10:37 am
Nonstop1h 37m
Sioux FallsDenver
FSD - DEN
FSDDEN
Sioux Falls Joe Foss Field
Sat 1/24
5:18 pm-6:24 pm
Nonstop2h 06m
Denver Intl
Mon 1/26
8:50 pm-11:44 pm
Nonstop1h 54m
Sioux FallsDenver
FSD - DEN
FSDDEN
Sioux Falls Joe Foss Field
Fri 5/1
1:45 pm-2:41 pm
Nonstop1h 56m
Denver Intl
Mon 5/4
8:30 pm-10:56 pm
Nonstop1h 26m
| 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 Accuracy3 stars | Trust Score*3 stars | |
| Price Accuracy1 star | 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 $44). Flying from Sioux Falls to Denver in May is currently the most expensive (average of $113). 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 57% 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
Comfort
Boarding
Food
Overall
Entertainment
Reviews
Jim,Nov 2025
AVL - ATL
Crew
Comfort
Boarding
Food
Overall
Entertainment
Reviews
Jim,Nov 2025
AVL - ATL
Crew
Comfort
Boarding
Food
Overall
Entertainment
Reviews
Jim,Nov 2025
AVL - ATL
Crew
Comfort
Boarding
Food
Overall
Entertainment
Reviews
Jim,Nov 2025
AVL - ATL
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$65 | Average$139 | FlexibilityNo cancel fee | On-time62% | |
| Cheapest$187 | Average$277 | FlexibilityNo cancel fee | On-time69% | |
| Cheapest$202 | Average$208 | FlexibilityNo cancel fee | On-timeN/A |