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The average roundtrip fare from Phoenix Sky Harbor (PHX) to San Diego International (SAN) is $115 USD during off-peak season. You can snag deals as low as $85 USD if you book 3-4 weeks ahead. I’ve seen prices jump to $220+ on weekends and holidays—save your cash for the beach instead.
Southwest Airlines dominates this route with 18 daily flights, no change fees, and $35 one-way baggage. Their flights are consistently on time—92% of the time last year. But their baggage policy? A joke. You’ll pay $40 for a second bag, which eats into your savings fast. United and American have similar prices but charge $50 for the first checked bag. I stick with Southwest for the simplicity, even if I’m lugging two suitcases.
Book 21-28 days before departure for the lowest fares. Last-minute deals rarely exist—flights fill up 70% faster than usual during summer. I tracked data for 2023: April and October offer the best rates, averaging $90 roundtrip. Avoid July and August when prices spike to $180+ due to beach crowds. If you’re flexible, fly midweek—Tuesdays and Wednesdays save you $25-$30 versus weekends.
San Diego’s main airport (SAN) is 12 miles from downtown. But if you’re hunting for deals, look at Los Angeles International (LAX) or San Diego’s McClellan-Palomar (MYF). LAX flights average $105 roundtrip, but add $45 for a shuttle to San Diego. MYF is smaller, with only three airlines, but fares can be $70-$90 roundtrip. I’d only choose MYF for budget travelers willing to deal with a 40-minute drive from the city. LAX is worth the extra leg if you find a $95 flight.
Direct flights take 1 hour and 20 minutes—just enough time to finish that movie you’ve been saving. The distance is 325 miles, which is shorter than a drive from San Diego to Las Vegas. Southwest’s flights are the quickest, averaging 1h15m, while United clocks in at 1h30m due to routing. Don’t waste time on connecting flights; the cheapest options are direct. I’ve seen 3+ hour layovers for $100 tickets—skip that.
October is your sweet spot. Fares dip to $85-$95 roundtrip, and crowds thin out after summer. I’ve booked flights for $89 on Southwest on October 12th—perfect for avoiding the Labor Day rush. Avoid March and June; those months see price jumps of 40% due to spring break and graduation trips. December? Forget it. You’ll pay $150+ for a window seat.
Southwest’s free carry-on and one checked bag is a steal. But if you check a second bag, it’s $40—more than a full roundtrip on some airlines. United charges $35 for the first bag, then $50 for the second. American is worse: $40 for the first, $100 for the second. I’ve seen travelers pay $120 extra for a family of four. Always pack light. I’ve never paid for a bag on Southwest, and it’s saved me $200 on a family trip last year.
A: Only if you find a $75 roundtrip flight to LAX. Add $45 for a shuttle, and it’s $120 total—more than flying direct to SAN. But if you’re booking a last-minute trip, LAX might have available seats at $90.
A: Start checking 365 days out, but I’ve found the best deals 21-28 days before departure. Airlines release seats at that point, and prices stabilize. Booking 6 months out often means paying more for the same seat.
A: Yes. Southwest flies 18 nonstop flights daily. United and American offer 5-7 each. You won’t be stuck waiting for a connection—this route is well-served. I’ve taken direct flights every time, even for last-minute trips.
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