$129 Cheap United flights New York (LGA) to San Diego (SAN)

View $129 flight on Thu, Oct 2, 2025Opens in a new window

  • Plan, book, fly with confidence

  • trending down icon

    Be in the know

    Get alerts if flight prices drop or rise*
  • bex rewards loyalty icon

    Book smarter

    Save up to 30% on select hotels after you book a flight*
  • one key icon

    Earn twice

    Earn your airline miles on top of our OneKeyCash
    Learn about One Key

$129 Cheap United flights New York (LGA) to San Diego (SAN)

Prices were available within the past 7 days and start at $129 for one-way flights and $238 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

United
Tue, Sep 16 - Tue, Sep 23
LGA
New York
SAN
San Diego
$238 Roundtrip, found 5 days ago
$238
Roundtrip
found 5 days ago
Select United flight, departing Tue, Sep 16 from New York to San Diego, returning Tue, Sep 23, priced at $238 found 5 days ago
United
Thu, Sep 4 - Tue, Sep 23
LGA
New York
SAN
San Diego
$248 Roundtrip, found 9 hours ago
$248
Roundtrip
found 9 hours ago
Select United flight, departing Thu, Sep 4 from New York to San Diego, returning Tue, Sep 23, priced at $248 found 9 hours ago
Flights from New York (LGA) to San Diego (SAN)
Origin airport
LaGuardia
Destination airport
San Diego Intl.
Airlines serving
Alaska Airlines, American Airlines, Delta, Frontier Airlines, Southwest Airlines, Spirit Airlines, United
Popular airline
Spirit Airlines
Distance
2436 mi
Average flight time
4 hours 50 mins

Frequently asked questions

How much is a United Airlines flight from LaGuardia Airport (LGA) to San Diego Intl. Airport (SAN)?
Landing cheap one-way United Airlines flights from LGA to SAN from $129 on Expedia couldn't be simpler — just filter by "Price (lowest to highest)." Or check out our affordable return fares from $238 for your next exciting adventure.**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 LGA 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 great prices on one-way and return fares in November.
What is the cheapest time to book flights from LaGuardia Airport (LGA) to San Diego Intl. Airport (SAN) with United Airlines?
Begin your search one to three months ahead of your travel date to score cheap fares on United Airlines flights from LaGuardia Airport (LGA) to San Diego Intl. Airport (SAN). You can save 25% by booking your domestic flight 34 to 86 days in advance versus last-minute reservations made 6 to 12 days out. You could also reduce costs by buying your fare on a Sunday, as it's 6% cheaper on average than a Monday, the most expensive day to book.* Get your timing right, and you can enjoy significant savings on domestic flights.*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 LaGuardia Airport (LGA) to San Diego Intl. Airport (SAN)?
Select our "Nonstop" filter when searching for direct United Airlines flights from LGA to SAN. You can also compare other airlines offering the same nonstop trip.
What is the earliest United Airlines flight from LGA to SAN?
To find the earliest departures from LGA to SAN with United Airlines, filter your results by "Morning" and "Early Morning." Choosing an early flight generally means you'll experience fewer cancellations.**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 LaGuardia Airport (LGA) to San Diego arrive at San Diego Intl. Airport (SAN). This is the main gateway to this destination.
Why fly with United Airlines from LGA to SAN?
Offering a rewarding loyalty program, United Airlines is a favorite of many travelers journeying from LGA to SAN. Plus, if you're a United Mileage Plus and One Key™ member booking through Expedia, you could earn OneKeyCash™* on eligible flights along with your airline miles.*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 LaGuardia Airport (LGA) to San Diego Intl. Airport (SAN)?
In most cases, you can change or cancel your flight, although additional fees may apply if your booking was made more than 24 hours ago. Need to keep your options open? Use our "Changes included" and "No cancel fee" filters to find flights that won't charge you extra if you need to alter your plans. To update your booking, head to "Trips," select your flight and click on "Manage Booking" for more details.

Explore a world of travel with Expedia

*Available to One Key members.