Atlanta (ATL) to Denver (DEN) flights

Delta Air Lines, Frontier Airlines, Southwest Airlines, United Airlines fly nonstop from Hartsfield Jackson Atlanta International Airport to Denver International Airport, with about 118 flights a week in July 2026. The 1,199-mile flight takes about 3h 17m gate to gate.

From
ATL
Atlanta
Hartsfield Jackson Atlanta International Airport
To
DEN
Denver
Denver International Airport
Distance
1,199 mi ยท 1,930 km
Flight time
3h 17m
Airlines
4
Seats filled
84%
Flights a week, July 2026
5,526 flights and 845,604 passengers in 12 months
DENDENATL
Map data: Natural Earth. Lines follow the shortest (great-circle) path.

Airlines flying ATL to DEN

AirlineFlights a weekAircraftPassengers (12 months)Flight time
Delta Air Lines58Airbus A321, Boeing 737-900ER, Boeing 757-200445,0913h 15m
Frontier Airlines20Airbus A321, Airbus A320neo, Airbus A320-100/200139,6653h 23m
Southwest Airlines20Boeing 737 MAX 8, Boeing 737-800, Boeing 737-700 / MAX 7141,8993h 13m
United Airlines19Airbus A319, Airbus A320-100/200, Boeing 737-800118,9493h 22m

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

ATL to DEN flight schedule

19 flight numbers flew this route in August 2026, 15 of them almost daily. The first usually leaves at 7:05am and the last at 11:10pm. Times are local and can change; check with the airline before you book.

FlightDepartsArrivesDays flown in August 2026On time (12 months)
WN 204Southwest Airlines7:05am8:10am2891%
DL 2235Delta Air Lines7:25am8:34am3194%
F9 1449Frontier Airlines7:40am9:03am3166%
UA 340United Airlines8:50am10:13am2991%
DL 995Delta Air Lines10:10am11:25am3187%
WN 665Southwest Airlines10:40am11:45am1283%
UA 1327United Airlines11:23am12:45pm2891%
DL 706Delta Air Lines12:15pm1:17pm2785%
F9 3293Frontier Airlines12:34pm2:01pm2581%
DL 530Delta Air Lines1:45pm2:52pm3181%
WN 107Southwest Airlines2:15pm3:25pm4n/a
UA 235United Airlines4:30pm5:55pm3179%
DL 519Delta Air Lines4:44pm5:57pm3167%
DL 746Delta Air Lines6:35pm7:52pm3168%
WN 206Southwest Airlines6:35pm7:45pm1619%
WN 408Southwest Airlines6:40pm7:50pm2050%
F9 3599Frontier Airlines8:30pm10:05pm3061%
DL 493Delta Air Lines8:47pm10:05pm1777%
DL 956Delta Air Lines11:10pm12:36am3175%

Is ATL to DEN on time?

From September 2025 to August 2026, 78% of 5,594 flights arrived within 15 minutes of schedule and 1.1% were cancelled. Flights leaving around 11am were the most punctual (90%), those around 6pm the least (62%). Most delay time was caused by the airline (crew, maintenance, cleaning, fuelling) (35%).

AirlineFlightsOn timeAverage delayCancelled
Delta Air Lines2,80779%12 min1.2%
Southwest Airlines1,07174%16 min1.2%
United Airlines92386%12 min0.4%
Frontier Airlines79371%24 min1.4%

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 departureFlightsOn time, relativeOn time
6am to 7am196
92%
7am to 8am505
86%
8am to 9am438
88%
9am to 10am297
90%
10am to 11am371
83%
11am to 12pm358
90%
12pm to 1pm506
84%
1pm to 2pm337
77%
2pm to 3pm204
77%
4pm to 5pm629
72%
6pm to 7pm476
62%
7pm to 8pm239
64%
8pm to 9pm430
66%
9pm to 10pm188
80%
10pm to 11pm189
75%

Flights by month

MonthFlightsFlights, relativePassengers
August 2025488
73,882
September 2025449
70,128
October 2025474
73,608
November 2025445
61,684
December 2025450
71,748
January 2026420
60,744
February 2026409
61,141
March 2026446
66,898
April 2026440
63,586
May 2026478
76,070
June 2026510
82,699
July 2026522
83,664

Related

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