$79 Cheap United flights Las Vegas (LAS) to San Diego (SAN)

View $79 flight on Sat, Oct 11, 2025Opens in a new window

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$79 Cheap United flights Las Vegas (LAS) to San Diego (SAN)

Prices were available within the past 7 days and start at $79 for one-way flights and $152 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

United
Mon, Oct 27 - Tue, Oct 28
LAS
Las Vegas
SAN
San Diego
$152 Roundtrip, found 1 hour ago
$152
Roundtrip
found 1 hour ago
Select United flight, departing Mon, Oct 27 from Las Vegas to San Diego, returning Tue, Oct 28, priced at $152 found 1 hour ago
Flights from Las Vegas (LAS) to San Diego (SAN)
Origin airport
Harry Reid Intl.
Destination airport
San Diego Intl.
Airlines serving
Alaska Airlines, American Airlines, Delta, Frontier Airlines, Southwest Airlines, Spirit Airlines, United
Popular airline
Alaska Airlines
Distance
259 mi
Average flight time
1 hour 12 mins

Frequently asked questions

How much is a United Airlines flight from Harry Reid Intl. Airport (LAS) to San Diego Intl. Airport (SAN)?
Apply the "Price (lowest to highest)" filter on Expedia to look for cheap United Airlines round-trip flights from $152 from LAS to SAN. Affordable one-way options from $79 are available too.**These prices were available on Expedia within the past 7 days, for flights departing within the next year. Prices and availability are subject to change. Additional terms apply.
What is the cheapest month to fly from LAS to SAN with United Airlines?
January is one of the least expensive months to travel to San Diego with United Airlines. You could also find fantastic deals on return and one-way tickets in November.
What is the cheapest time to book flights from Harry Reid Intl. Airport (LAS) to San Diego Intl. Airport (SAN) with United Airlines?
For cheap United Airlines fares from Harry Reid Intl. Airport (LAS) to San Diego Intl. Airport (SAN), start searching one to three months before your intended departure. Reserving domestic flights 34 to 86 days in advance could save you 25% compared to booking just 6 to 12 days ahead. The day you book can also affect the price you pay. Sunday is typically the cheapest, while Monday is often the most expensive for domestic flights. You can save 6% on average by booking your journey on a Sunday.**Ideal booking window recommendation is based on average round-trip ticket prices for January through November for 2024. Best day of the week to book recommendation is based on average round-trip ticket prices for January through October 2024. All data sourced from ARC's global airline sales database.
Does United Airlines fly nonstop from Harry Reid Intl. Airport (LAS) to San Diego Intl. Airport (SAN)?
Enter your dates, hit search and select the "Nonstop" filter on Expedia to browse any direct flights from LAS to SAN with United Airlines or other airlines.
What is the earliest United Airlines flight from LAS to SAN?
To find the earliest departures from LAS to SAN with United Airlines, sort your results by "Morning" and "Early Morning." Booking an early flight generally means cancellations are less likely.**Most reliable time of the day recommendation is based on January through August 2024 flight status data sourced from OAG's global flight data platform.
What airports does United Airlines fly into in San Diego?
United Airlines flights from Harry Reid Intl. Airport (LAS) to San Diego touch down at San Diego Intl. Airport (SAN). This is the main gateway here.
Why fly with United Airlines from LAS to SAN?
A rewarding loyalty program and the ability to rack up points through United Mileage Plus are the start of the reasons to fly from LAS to SAN with United Airlines. Plus, when you join Expedia's free One Key™ program, you can receive OneKeyCash™* alongside United Airlines's loyalty program earnings. It's yours to use wherever your next trip takes you.*OneKeyCash™ disclaimer - OneKeyCash™ is not redeemable for cash and can only be used on Expedia, Hotels.com and Vrbo.
Can I change or cancel my United Airlines flight from Harry Reid Intl. Airport (LAS) to San Diego Intl. Airport (SAN)?
Depending on your fare type, a fee will generally apply if you change or cancel your booking more than 24 hours after confirmation. To find tickets with more flexibility, select our "No cancel fee" or "Changes included" filter while searching for flights. For more information on canceling or changing your reservation, head to "Trips," select your flight and click on "Manage Booking."
*Available to One Key members.