Where Is Hot in September from San Antonio? 2026
29 warm destinations have direct flights from San Antonio in September. San Diego has the best overall weather. Philadelphia has the lowest fares from €134.
|
San Diego
United States
|
24°C | 2h 40m | €218 | €82/night | 106 |
|
Los Angeles
United States
|
26°C | 2h 40m | €200 | €84/night | 107 |
|
Washington
United States
|
21°C | 3h | €496 | €93/night | 246 |
|
Salt Lake City
United States
|
24°C | 2h 40m | €470 | €66/night | 123 |
|
Philadelphia
United States
|
23°C | 3h 20m | €134 | €71/night | 118 |
|
New York
United States
|
23°C | 3h 40m | €400 | €221/night | 116 |
|
Baltimore
United States
|
24°C | 3h 20m | €240 | €73/night | 111 |
|
Newark
United States
|
23°C | 3h 20m | €402 | €87/night | 123 |
|
Detroit
United States
|
22°C | 2h 40m | €498 | €89/night | 123 |
|
Boston
United States
|
21°C | 3h 40m | €346 | €95/night | 124 |
|
Denver
United States
|
23°C | 1h 40m | €162 | €59/night | 106 |
|
Seattle
United States
|
20°C | 3h 40m | €388 | €72/night | 131 |
|
Chicago
United States
|
22°C | 2h 20m | €202 | €86/night | 215 |
|
Guadalajara
Mexico
|
22°C | 1h 40m | €353 | €30/night | 115 |
|
Toronto
Canada
|
20°C | 3h 20m | €256 | €100/night | 24 |
|
San Francisco
United States
|
19°C | 3h 20m | €498 | €90/night | 123 |
|
Nashville
United States
|
27°C | 2h | €228 | €60/night | 107 |
|
Charlotte
United States
|
26°C | 2h 40m | €156 | €67/night | 104 |
|
Kansas City
United States
|
25°C | 1h 40m | €202 | €68/night | 76 |
|
Atlanta
United States
|
28°C | 2h | €206 | €54/night | 121 |
|
Minneapolis
United States
|
19°C | 2h 40m | €489 | €70/night | 123 |
|
Mexico City
Mexico
|
20°C | 1h 40m | €220 | €47/night | 122 |
|
Las Vegas
United States
|
31°C | 2h 40m | €154 | €86/night | 113 |
|
Orlando
United States
|
30°C | 2h 20m | €177 | €61/night | 110 |
|
Tampa
United States
|
30°C | 2h 20m | €226 | €85/night | 83 |
|
Dallas
United States
|
32°C | €160 | €52/night | 103 | |
|
Miami
United States
|
30°C | 2h 40m | €200 | €87/night | 119 |
|
Houston
United States
|
31°C | €172 | €51/night | 108 | |
|
Phoenix
United States
|
33°C | 2h | €178 | €71/night | 102 |
Temperatures are historical averages for September. Prices updated 11 Sep 2026.
Warmest destinations from San Antonio in September
The warmest places to fly to directly from San Antonio in September, ranked by average daytime temperature. All destinations average 18°C or above and are reachable on a direct flight.
San Diego
24°C avg daytime
From €218 return
2h 40m direct
106 trips available
Los Angeles
26°C avg daytime
From €200 return
2h 40m direct
107 trips available
Washington
21°C avg daytime
From €496 return
3h direct
246 trips available
Salt Lake City
24°C avg daytime
From €470 return
2h 40m direct
123 trips available
Philadelphia
23°C avg daytime
From €134 return
3h 20m direct
118 trips available
Frequently Asked Questions
Where is hot in September from San Antonio?
There are 29 warm destinations reachable by direct flight from San Antonio in September. San Diego is among the top picks, with average daytime temperatures around 24°C.
Which is the warmest place to fly to from San Antonio in September?
Phoenix is typically the warmest destination reachable by direct flight from San Antonio in September, averaging around 33°C during the day.
What is the cheapest warm holiday from San Antonio in September?
Philadelphia is among the cheapest warm destinations from San Antonio in September, with return fares from around €134.
How does FairFareFinder calculate the best destinations for September?
FairFareFinder uses live flight and hotel price data combined with historical weather averages to rank destinations. Temperatures shown for dates beyond 14 days ahead are historical averages for September, not live forecasts. Prices are updated approximately every 6 hours.
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