Southwest AirlinesDepart06:40
Tue, Dec 22TUS → SAN
1h 20m · Direct
$102one way, per person
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- Cheapest fare
- $102
- Cheapest month
- December
- Direct flights
- Yes
- Flight time
- 1h 20m
Southwest Airlines · Tue, Dec 22
from $102
Southwest Airlines
580 km
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Cheapest month to fly from Tucson to San Diego
Lowest one-way fare per person in each month. Choose a month to see every date.
Cheapest dates in December 2026
The lowest fares we've seen for each day, cheapest first.
Southwest Airlines
American AirlinesDepart17:55
Mon, Dec 28TUS → SAN
2h 20m · 1 stop
$181one way, per person
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About flights from Tucson to San Diego
Tucson (TUS) and San Diego (SAN) are about 580 km apart. Direct flights take around 1h 20m, and recent direct fares were with Southwest Airlines. Over the next few months, one-way fares start from $102, and December 2026 is currently the cheapest month to fly.
These prices come from searches travellers made in the last 48 hours, so they move quickly. If you see a good fare, it's worth booking soon. FlightsExp is free to use: you book directly with our travel partner.
Frequently asked questions
How much is a flight from Tucson to San Diego?
The cheapest one-way fare we've seen recently is $102 with Southwest Airlines, departing Tuesday, December 22, 2026. Over the coming months, the lowest fare in each month ranges from $102 to $102.
What is the cheapest month to fly from Tucson to San Diego?
December 2026 currently has the lowest fares, from $102 one way.
Are there direct flights from Tucson to San Diego?
Yes. Recent direct fares were with Southwest Airlines.
How long is the flight from Tucson to San Diego?
A direct flight takes about 1h 20m. Tucson and San Diego are around 580 km apart.
Which airlines fly from Tucson to San Diego?
Recent fares on this route were with Southwest Airlines and American Airlines.
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