Sacramento (SMF) to Denver (DEN) flights

Southwest Airlines, United Airlines, Frontier Airlines fly nonstop from Sacramento International Airport to Denver International Airport, with about 88 flights a week in July 2026. The 909-mile flight takes about 2h 17m gate to gate.

From

SMF

Sacramento

Sacramento International Airport

DEN

Denver

Denver International Airport

Distance: 909 mi · 1,463 km
Flight time: 2h 17m
Airlines: 3
Seats filled: 82%

Flights a week, July 2026

3,823 flights and 525,522 passengers in 12 months

Map data: Natural Earth. Lines follow the shortest (great-circle) path.

Airlines flying SMF to DEN

Airline	Flights a week	Aircraft	Passengers (12 months)	Flight time
Southwest Airlines	45	Boeing 737 MAX 8, Boeing 737-700 / MAX 7, Boeing 737-800	243,898	2h 14m
United Airlines	39	Boeing 737-800, Boeing 737-900ER, Airbus A320-100/200	251,642	2h 20m
Frontier Airlines	4	Airbus A320neo, Airbus A321, Airbus A320-100/200	29,982	2h 25m

Airlines are the operating carrier: regional airlines such as SkyWest or Horizon often fly under a larger airline's brand.

SMF to DEN flight schedule

19 flight numbers flew this route in August 2026, 9 of them almost daily. The first usually leaves at 5:00am and the last at 8:55pm. Times are local and can change; check with the airline before you book.

Flight	Departs	Arrives	Days flown in August 2026	On time (12 months)
UA 1889United Airlines	5:00am	8:27am	31	96%
WN 4048Southwest Airlines	5:45am	9:00am	4	n/a
WN 3691Southwest Airlines	6:55am	10:15am	24	88%
UA 2285United Airlines	8:55am	12:23pm	31	97%
WN 3693Southwest Airlines	10:40am	2:00pm	20	70%
UA 1023United Airlines	10:50am	2:17pm	31	91%
F9 3666Frontier Airlines	11:42am	3:17pm	24	81%
WN 3771Southwest Airlines	11:50am	3:10pm	8	n/a
UA 1961United Airlines	12:57pm	4:25pm	31	81%
WN 3442Southwest Airlines	1:50pm	5:10pm	8	n/a
WN 2344Southwest Airlines	1:55pm	5:15pm	12	20%
WN 4003Southwest Airlines	2:15pm	5:35pm	4	n/a
UA 566United Airlines	4:17pm	7:45pm	30	84%
WN 4776Southwest Airlines	4:55pm	8:10pm	28	85%
WN 4637Southwest Airlines	5:15pm	8:30pm	4	n/a
WN 791Southwest Airlines	5:45pm	9:00pm	8	n/a
UA 1841United Airlines	6:31pm	9:59pm	19	82%
WN 1171Southwest Airlines	7:45pm	11:05pm	12	58%
WN 1111Southwest Airlines	8:55pm	12:10am	4	n/a

Is SMF to DEN on time?

From September 2025 to August 2026, 83% of 3,844 flights arrived within 15 minutes of schedule and 0.2% were cancelled. Flights leaving around 5am were the most punctual (96%), those around 2pm the least (66%). Most delay time was caused by late-arriving aircraft (44%).

Airline	Flights	On time	Average delay	Cancelled
Southwest Airlines	1,858	78%	12 min	0.2%
United Airlines	1,792	89%	9 min	0.3%
Frontier Airlines	194	81%	16 min	0%

Airlines as sold: flights operated by regional partners count under the airline on the ticket. Average delay is across all completed flights, early arrivals counted as zero.

On-time arrivals by departure time

Scheduled departure	Flights	On time
5am to 6am	529	96%
6am to 7am	197	91%
8am to 9am	470	95%
9am to 10am	114	92%
10am to 11am	332	88%
11am to 12pm	164	83%
12pm to 1pm	309	76%
1pm to 2pm	425	74%
2pm to 3pm	218	66%
3pm to 4pm	89	68%
4pm to 5pm	445	75%
6pm to 7pm	215	81%
7pm to 8pm	177	73%

Flights by month

Month	Flights	Passengers
August 2025	344	46,061
September 2025	342	46,748
October 2025	335	47,714
November 2025	317	42,115
December 2025	300	41,573
January 2026	262	34,154
February 2026	258	33,625
March 2026	291	41,485
April 2026	291	40,012
May 2026	319	44,621
June 2026	374	54,267
July 2026	390	53,147

Source: US Department of Transportation, T-100 Segment data, August 2025 to July 2026.