San Francisco International Airport
San Francisco, United StatesSFO / KSFO
International hub · 130 direct destinations · 4 runways · longest runway 11,870 ft
60 °F · ClearSource: METAR observation via the NOAA Aviation Weather Center
Route
San Francisco → Denver
SFO
San FranciscoSan Francisco International Airport
San FranciscoSan Francisco International AirportDENDenverDenver International Airport
DenverDenver International Airport- Distance
- 965 mi
- Estimated flight time
- ~2h 25m
Denver is currently 1 hour ahead of San Francisco.
Observed nonstop
How often does this route fly?
Frequency
Throughout the day
On average around 14 flights a day, observed from October 2025 to September 2026.
- 14
- flights per day
- 16
- busiest month · Jun
- 14
- quietest month · Oct
- 2 hr 2 min
- measured flight time
- 12 / 12
- months seen
Through the year
Per day, month by month
- 14Jan2026
- 14Feb
- 14Mar
- 14Apr
- 15May
- 16Jun
- 16Jul
- 15Aug
- 15Sep
- 14Oct2025
- 14Nov
- 14Dec
Airlines
Who flies it
United Airlinesall year
Southwest Airlinesall year
Frontier Airlinesall year
SkyWest Airlinesall year
Delta Air Linesspring
Through the day
Departure times
Local time in San Francisco. Most departures between 05:00 and 08:00.
- 00:00
- 01:00
- 02:00
- 03:00
- 04:00
- 05:00
- 06:00
- 07:00
- 08:00
- 09:00
- 10:00
- 11:00
- 12:00
- 13:00
- 14:00
- 15:00
- 16:00
- 17:00
- 18:00
- 19:00
- 20:00
- 21:00
- 22:00
- 23:00
Through the week
By weekday
- 15Mon
- 14.2Tue
- 13.7Wed
- 14.6Thu
- 15Fri
- 14.9Sat
- 14.5Sun
Fleet
Aircraft observed
- Airbus A321neoA21N22%
- Boeing 737 MAX 8B38M15%
- Boeing 757-300B75312%
- Boeing 737-800B7387%
- Airbus A320neoA20N6%
All the numbers in a table
| Month | Per day | Seen | Airlines |
|---|---|---|---|
| January 2026 | 14 | 428 |
|
| February 2026 | 14 | 400 |
|
| March 2026 | 14 | 428 |
|
| April 2026 | 14 | 416 |
|
| May 2026 | 15 | 432 |
|
| June 2026 | 16 | 487 |
|
| July 2026 | 16 | 502 |
|
| August 2026 | 15 | 433 |
|
| September 2026 | 15 | 454 |
|
| October 2025 | 14 | 429 |
|
| November 2025 | 14 | 426 |
|
| December 2025 | 14 | 411 |
|
Airlines observed on this route
From observed callsign routes on SFO-DEN - not a booking guarantee.
About this route
- Domestic route: both airports are in the same country.
- The opposite direction has also been observed as a direct connection.
- Direct destinations observed from San Francisco: 130.
- Direct destinations observed from Denver: 203.
The airports on this route
Denver International Airport
Denver, United StatesDEN / KDEN
International hub · 203 direct destinations · 6 runways · longest runway 16,001 ft
32 °F · ClearSource: METAR observation via the NOAA Aviation Weather Center
Alternative airports for this journey
Same journey, a different airport nearby - with an observed direct connection.
OAK DENOakland San Francisco Bay AirportOakland is about 11 mi from San Francisco.View route →SFO BJCRocky Mountain Metropolitan AirportDenver is about 24 mi from Denver.View route →SJC DENMineta San Jose International AirportSan Jose is about 30 mi from San Francisco.View route →STS DENCharles M. Schulz Sonoma County AirportSanta Rosa is about 66 mi from San Francisco.View route →
About the route from San Francisco to Denver
The observed direct connection between San Francisco International Airport (SFO) and Denver International Airport (DEN) covers approximately 965 mi. The estimated flight time is around 2h 25m. Delta Air Lines, Frontier Airlines, SkyWest Airlines, Southwest Airlines and United Airlines have been observed on this connection in the available route data.
Frequently asked questions about this route
- How far is San Francisco from Denver by air?
- The great-circle distance between San Francisco International Airport and Denver International Airport is approximately 965 mi.
- How long is the flight from San Francisco to Denver?
- Based on the distance, the estimated flight time is about 2h 25m. This is an estimate, not a schedule.
- Is there a direct connection from San Francisco to Denver?
- Yes, a direct connection between SFO and DEN has been observed in our route data.
- Which airlines have been observed on this route?
- In the available route data: Delta Air Lines, Frontier Airlines, SkyWest Airlines, Southwest Airlines and United Airlines.
- How often is there a flight from San Francisco to Denver?
- On average around 14 flights a day, measured over twelve months (October 2025 to September 2026) in the flight archive, with 5,246 observed flights. Mainly United Airlines, Southwest Airlines, Frontier Airlines. That is an observation, not a timetable.
- What is the current time difference between San Francisco and Denver?
- Denver is currently 1 hour ahead of San Francisco.
Where this data comes from
The route data comes from the flight archive (ADS-B, adsb.lol): which connections actually flew over the last twelve full months and who flew them, combined with our own airport, runway, and airline datasets. It is reference data about observed routes - not a current timetable and no claim about bookability.
The frequency and aircraft on this page come from the flight archive (ADS-B, 12 months, October 2025 to September 2026), summarized per route per month. We do not see every flight, so it is a floor, not a count.
Route data updated on October 11, 2026.