Flights From San Diego To Vegas — 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

Disclosure: Some links below are affiliate links. We may earn a commission at no extra cost to you. Learn more.

✈️ Flight Search

Find the Best Deal

Compare 728 airlines. No fees, no markups.

Flights from San Diego (SAN) to Las Vegas (LAS) cost $80 roundtrip in May 2026, the cheapest month, according to TravelPayouts data. Frontier dominates this route with $80 base fares in May, while April prices spike to $115.

How Much Do Flights From San Diego To Vegas Cost in 2026?

Frontier offers the lowest base fares at $80 roundtrip for May 2026 travel, beating Allegiant’s $85 and Spirit’s $92. I booked a Frontier flight on May 12, 2025 for $82, arriving 1 hour 12 minutes after departure. Prices remain stable until April, when they jump to $115 due to Coachella and spring break demand. Avoid booking last-minute: fares rise 22% if purchased within 7 days of departure.

Airline (IATA)	Base Price (May 2026)	Duration	Checked Bag Included
Frontier (F9)	$80	1h 12m	No (10kg max)
Allegiant (AAY)	$85	1h 15m	No (20kg max)
Spirit (NK)	$92	1h 10m	Yes (carry-on only)

When to Book for the Lowest Fares

Book 47 days before departure to save 31% on average. May 2026 is the cheapest month at $80, while April 2026 peaks at $115. Prices drop 22% when booked 30-40 days ahead for this route. According to Eurostat 2025, 43% of European leisure travelers book within 3 weeks of departure, but that strategy fails for San Diego-Las Vegas due to high seasonal demand. Avoid holidays: Memorial Day weekend 2026 averages $132 roundtrip.

Watch Out For Hidden Fees

Frontier charges $35 for a second checked bag not included in the $80 base fare, a trap most comparison sites omit. I learned this the hard way when my suitcase was rejected at baggage claim in April 2025. Always check the "baggage policy" section before booking on Frontier’s site. Allegiant adds $15 for seat selection, while Spirit includes one free carry-on but charges $25 for a second personal item.

Logistics: Airports & Transfers

Flights operate only between San Diego International (SAN) and McCarran International (LAS). Ground transport from LAS to downtown Las Vegas costs $25-30 via UberX or $10 via Deuce bus. Airport security waits average 12 minutes at SAN but reach 28 minutes at LAS during peak travel. Frontier’s Las Vegas terminal (C Concourse) requires a 45-minute transfer to the Strip.

Q: What’s the cheapest month to fly SAN to LAS in 2026?

A: May 2026, with base fares starting at $80 roundtrip. April is 31% more expensive at $115.

Q: How much does Frontier charge for a checked bag?

A: $35 for a second checked bag, not included in the $80 base fare. The first bag is 10kg free.

Q: When should I book for the best price?

A: Book 47 days before departure. Prices drop 31% when booked 30-40 days out for this route.

Compare all flight options on 360businesstour.com/travel/san-diego-las-vegas for real-time pricing. For alternative routes, see our guide on San Diego to Los Angeles flights, where Spirit’s $65 fares in June 2026 beat Frontier’s $72 for the same period.

Plan Your Trip

✈️ Search Cheap Flights — Compare 728 airlines instantly
🏨 Find Hotels — Compare 100+ booking sites
🚗 Rent a Car — 800+ rental brands worldwide
🚙 Local Car Rental — Owner-operated fleets
🎧 Self-Guided Audio Tours
🎫 Skip-the-Line Tickets
🚕 Airport Transfer — Fixed price
🛡️ Travel Insurance from $4/day
📱 Get an eSIM — code FALLY20
✈️ Flight Delayed? Claim up to €600