George Bush Intercontinental Airport
Houston, United StatesIAH / KIAH
International hub · 159 direct destinations · 5 runways · longest runway 12,001 ft
79 °F · ClearSource: METAR observation via the NOAA Aviation Weather Center
Route
Houston → San Francisco
IAH
HoustonGeorge Bush Intercontinental Airport
HoustonGeorge Bush Intercontinental AirportSFOSan FranciscoSan Francisco International Airport
San FranciscoSan Francisco International Airport- Distance
- 1,632 mi
- Estimated flight time
- ~3h 45m
San Francisco is currently 2 hours behind Houston.
Observed nonstop
How often does this route fly?
Frequency
Several times a day
On average around 9 flights a day, observed from October 2025 to September 2026.
- 9
- flights per day
- 10
- busiest month · Oct
- 8
- quietest month · Aug
- 3 hr 36 min
- measured flight time
- 12 / 12
- months seen
Through the year
Per day, month by month
- 9Jan2026
- 10Feb
- 9Mar
- 9Apr
- 9May
- 9Jun
- 9Jul
- 8Aug
- 9Sep
- 10Oct2025
- 9Nov
- 9Dec
Airlines
Who flies it
United Airlinesall year
SkyWest Airlineswinter
Through the day
Departure times
Local time in Houston. Most departures between 14:00 and 17:00.
- 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
- 8.9Mon
- 8.8Tue
- 8.7Wed
- 8.7Thu
- 9.3Fri
- 9.4Sat
- 8.9Sun
Fleet
Aircraft observed
- Boeing 737 MAX 9B39M48%
- Boeing 737-900B73930%
- Boeing 777-200B77211%
- Boeing 757-300B7534%
- Boeing 787-9B7891%
All the numbers in a table
| Month | Per day | Seen | Airlines |
|---|---|---|---|
| January 2026 | 9 | 281 |
|
| February 2026 | 10 | 264 |
|
| March 2026 | 9 | 282 |
|
| April 2026 | 9 | 261 |
|
| May 2026 | 9 | 253 |
|
| June 2026 | 9 | 271 |
|
| July 2026 | 9 | 284 |
|
| August 2026 | 8 | 249 |
|
| September 2026 | 9 | 264 |
|
| October 2025 | 10 | 292 |
|
| November 2025 | 9 | 272 |
|
| December 2025 | 9 | 258 |
|
Airlines observed on this route
From observed callsign routes on IAH-SFO - 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 Houston: 159.
- Direct destinations observed from San Francisco: 130.
The airports on this route
San Francisco International Airport
San Francisco, United StatesSFO / KSFO
International hub · 130 direct destinations · 4 runways · longest runway 11,870 ft
74 °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.
About the route from Houston to San Francisco
The observed direct connection between George Bush Intercontinental Airport (IAH) and San Francisco International Airport (SFO) covers approximately 1,632 mi. The estimated flight time is around 3h 45m. SkyWest Airlines and United Airlines have been observed on this connection in the available route data.
Frequently asked questions about this route
- How far is Houston from San Francisco by air?
- The great-circle distance between George Bush Intercontinental Airport and San Francisco International Airport is approximately 1,632 mi.
- How long is the flight from Houston to San Francisco?
- Based on the distance, the estimated flight time is about 3h 45m. This is an estimate, not a schedule.
- Is there a direct connection from Houston to San Francisco?
- Yes, a direct connection between IAH and SFO has been observed in our route data.
- Which airlines have been observed on this route?
- In the available route data: SkyWest Airlines and United Airlines.
- How often is there a flight from Houston to San Francisco?
- On average around 9 flights a day, measured over twelve months (October 2025 to September 2026) in the flight archive, with 3,231 observed flights. Mainly United Airlines, SkyWest Airlines. That is an observation, not a timetable.
- What is the current time difference between Houston and San Francisco?
- San Francisco is currently 2 hours behind Houston.
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.