Currently, the most affordable month to book a Delta flight from Seattle to San Diego in October, with an average price of $288. Conversely, traveling with Delta from Seattle to San Diego in July will be the most expensive, with an average cost of $358. Various factors influence flight prices, so comparing airlines, departure airports, and times can help reduce costs.
January
$291
February
$297
March
$339
April
$298
May
$301
June
$356
July
$358
August
$308
September
$298
October
$288
November
$336
December
$306
SAN Temperature | 57.2 - 71.6 °F |
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If weather is an important factor for your trip to San Diego, use this chart to help with planning. For those seeking warmer temperatures, August is the ideal time of year to visit, when temperatures reach an average of 71.6 F. Travelers looking to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 57.2 F).
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