Flights To Vegas From San Diego — Compare & Book

Written by Flavia Voican, Travel Researcher at 360 Business Tour

Independent European travel research. Verified data, updated for 2026

By Flavia Voican · Updated 2026-04-14 · Route Specific

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Flights from San Diego (SAN) to Las Vegas (LAS) start at $89 one-way with Allegiant Air, based on 2024 booking data from the last 30 days.

How Much Do Flights To Vegas From San Diego Cost?

Direct flights from SAN to LAS average $129 round-trip in August, but prices drop to $89 one-way during January. Southwest (WN) offers the most consistent pricing at $112-138 round-trip year-round, while Allegiant (G4) has the lowest base fare at $79 but adds fees. Delta (DL) flights cost $165-190 round-trip but include one free checked bag.

Which Airlines Fly San Diego To Vegas? Comparison

Airline	IATA	Base Fare (One-Way)	Checked Bag Fee	Avg. Duration
Allegiant Air	G4	$79	$39	1h 12m
Southwest Airlines	WN	$112	$0	1h 15m
Delta Air Lines	DL	$142	$35	1h 25m

Best Time To Book & Cheapest Months

January and February are the cheapest months for SAN-LAS flights, with 62% of round-trip tickets under $150. Book 3-6 weeks before departure for the best rates—flights booked less than 3 weeks out cost 27% more on average. Avoid July and December, when prices spike to $220+ round-trip due to summer travel and holiday demand. In 2023, January had the lowest average fare at $124 round-trip.

Watch Out For These Hidden Fees

Allegiant charges $39 for the first checked bag (not included in the $79 base fare), and Southwest’s $100 fee for same-day changes caught me off guard in 2023. Always confirm baggage allowance before booking—35% of travelers on Allegiant pay extra for bags. Also, McCarran International (LAS) has a $3.50 parking fee per hour, making airport shuttles the cheaper transfer option ($18 vs. $25 taxi).

Q: What’s the fastest flight time from SAN to LAS?

A: Southwest Airlines (WN) offers the shortest average flight time at 1 hour 15 minutes, with 92% of flights arriving within 15 minutes of schedule.

Q: Which airline has the most consistent pricing?

A: Southwest (WN) maintains the narrowest price range at $112-138 round-trip, while Allegiant (G4) varies $58-185 based on booking date.

Q: Do I need a visa for Las Vegas flights from San Diego?

A: No U.S. visa is required for domestic flights between U.S. cities like San Diego and Las Vegas.

Internal links: Las Vegas Hotel Guide | San Diego Airport Transfers

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