Cheap flights from Portsmouth, MA to San Diego, CA
Choose between Allegiant Air, Frontier Airlines, or Spirit Airlines to find the best price
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Tips to know when travelling to San Diego
Most popular airline | Allegiant Air |
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Book your trip to arrive at San Diego International, or McClellan–Palomar. The most popular airlines for this route are Allegiant Air, Frontier Airlines, Spirit Airlines, JetBlue Airways, and Alaska Airlines. Portsmouth and San Diego have 144 direct flights per week.
Check-in for a flight from Portsmouth to San Diego
Name | Carrier code | IATA Code | Passport needed during booking | Online check-in available |
---|---|---|---|---|
Allegiant Air | AAY | G4 | No | Opens 24 days before flight Closes 1 hours before flight |
Frontier Airlines | FFT | F9 | No | Opens 24 days before flight Closes 1 hours before flight |
Spirit Airlines | NKS | NK | No | Opens 24 days before flight Closes 1 hours before flight |
JetBlue Airways | JBU | B6 | No | Opens 24 days before flight Closes 2 hours before flight |
Alaska Airlines | ASA | AS | No | Opens 24 days before flight Closes 1 hours before flight |
Weather in San Diego
Average Weather
Month | Average monthly max temperature | Average monthly min temperature |
January | 18°C | 10°C |
February | 17°C | 10°C |
March | 18°C | 11°C |
April | 19°C | 12°C |
May | 20°C | 14°C |
June | 22°C | 16°C |
July | 24°C | 18°C |
August | 25°C | 19°C |
September | 25°C | 19°C |
October | 23°C | 16°C |
November | 21°C | 13°C |
December | 17°C | 11°C |
14 day forecast
Frequently asked questions
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