Is United Airlines cheaper than other airlines flying to San Diego?

With an average return price of $372, United Airlines is cheaper than Breeze Airways when it comes to flights to San Diego. However, the cheapest airline flying to San Diego is Frontier, with an average return price of $212.

Which other airlines fly to San Diego?

Along with United Airlines, you can also fly to San Diego with Southwest, Breeze Airways, Alaska Airlines, Frontier, Alaska Airlines, Delta, Breeze Airways and American Airlines.

How much is a flight to San Diego with United Airlines?

On average, United Airlines flights to San Diego cost $372 for a round-trip.

Which airport do United Airlines flights to San Diego fly into?

You’ll fly into San Diego Airport when flying to San Diego with United Airlines.

Are there any other airlines in Star Alliance that fly to San Diego?

Unfortunately, there are no other airlines in Star Alliance that fly to San Diego.

United Airlines flights to San Diego (SAN) from $59

Flight Deals

Cheap United Airlines Flight Deals to San Diego

Here are some of the best deals found on KAYAK recently from United Airlines to San Diego that are departing in the next months. While these flights were available on KAYAK in the last 72 hours, prices and availability are subject to change and deals may expire.

Discover the best prices for you by selecting your travel dates on KAYAK.

Round-trip

One-way

Last minute

Direct

Recent round-trip United Airlines flight deals to San Diego

Thu, Feb 12 - Tue, Feb 17

7:00 am - 8:40 am

SFO

SAN

1h 40mnonstop

7:45 am - 9:35 am

SAN

SFO

1h 50mnonstop

$114United Airlines

Thu, Feb 19 - Sun, Feb 22

8:57 pm - 10:35 pm

DEN

SAN

2h 38mnonstop

6:30 am - 9:58 am

SAN

DEN

2h 28mnonstop

$117United Airlines

Fri, Mar 6 - Sun, Mar 8

7:00 am - 8:40 am

SFO

SAN

1h 40mnonstop

6:15 am - 8:05 am

SAN

SFO

1h 50mnonstop

$117United Airlines

Fri, Feb 27 - Tue, Mar 3

7:00 am - 8:40 am

SFO

SAN

1h 40mnonstop

5:55 pm - 7:42 pm

SAN

SFO

1h 47mnonstop

$124United Airlines

Sat, May 16 - Thu, May 21

8:16 am - 10:00 am

SFO

SAN

1h 44mnonstop

12:20 pm - 1:55 pm

SAN

SFO

1h 35mnonstop

$126United Airlines

Wed, Apr 15 - Sun, Apr 19

7:45 am - 9:16 am

DEN

SAN

2h 31mnonstop

6:32 am - 10:09 am

SAN

DEN

2h 37mnonstop

$133United Airlines

Fri, Feb 27 - Sun, Mar 1

7:00 am - 8:40 am

SFO

SAN

1h 40mnonstop

6:15 am - 8:05 am

SAN

SFO

1h 50mnonstop

$133United Airlines

Fri, Mar 6 - Mon, Mar 9

10:35 pm - 12:14 am

SFO

SAN

1h 39mnonstop

6:15 am - 8:05 am

SAN

SFO

1h 50mnonstop

$134United Airlines

Thu, Feb 12 - Sun, Feb 15

7:00 am - 8:40 am

SFO

SAN

1h 40mnonstop

6:15 am - 12:00 pm

SAN

SFO

5h 45m

1 stop

$136United Airlines

Mon, Feb 9 - Wed, Feb 11

10:40 pm - 12:15 am

SFO

SAN

1h 35mnonstop

6:00 pm - 7:46 pm

SAN

SFO

1h 46mnonstop

$142United Airlines

Useful Info

Low season	December
High season	March
Cheapest flight	$59
Average price round-trip	$387
Good deal round-trip	$329
Good deal one-way	$203

Best time to beat the crowds but there is an average 14% increase in price.

Most popular time to fly with an average 1% increase in price.

Flight from Denver to San Diego

(avg. price over the last 2 weeks)

or less

When to book flights with United Airlines to San Diego

Average price per month

Flight prices as travel date approaches

Is United Airlines cheaper than other airlines flying to San Diego?
With an average return price of $372, United Airlines is cheaper than Breeze Airways when it comes to flights to San Diego. However, the cheapest airline flying to San Diego is Frontier, with an average return price of $212.
Which other airlines fly to San Diego?
Along with United Airlines, you can also fly to San Diego with Southwest, Breeze Airways, Alaska Airlines, Frontier, Alaska Airlines, Delta, Breeze Airways and American Airlines.
How much is a flight to San Diego with United Airlines?
On average, United Airlines flights to San Diego cost $372 for a round-trip.
Which airport do United Airlines flights to San Diego fly into?
You’ll fly into San Diego Airport when flying to San Diego with United Airlines.
Are there any other airlines in Star Alliance that fly to San Diego?
Unfortunately, there are no other airlines in Star Alliance that fly to San Diego.

If you’re intending to fly with United Airlines, book your flight to San Diego at least 2 weeks before departure to ensure a below-average price.
High season for flights to San Diego with United Airlines is March and prices are highest at this time. The cheapest month to fly is December.

7.4

Good9,175 verified ratings

6.6Food

7.1Entertainment

7.3Comfort

7.7Boarding

8.1Crew

8.0 Very good

Anonymous, Jan 2026

I wish there were outlets to charge my iPhone. The crew was great; we had a female pilot who was great with explaining what was happening and delays,

10.0 Wonderful

Anonymous, Jan 2026

The seats were comfortable and we had leg room. Great entertainment.

10.0 Wonderful

Vanessa, Jan 2026

The flight crew where really good. Better then the crew from BNE to SFO

4.0 Mediocre

Khalid, Jan 2026

Food should be changed in menu Many muslims travels in this airlime they need to add one Halal meal

4.0 Mediocre

Khalid, Jan 2026

There has been long delay between connecting flights

4.0 Mediocre

Gina, Jan 2026

Significant delays caused scheduling conflicts

2.0 Poor

Lisa, Jan 2026

Delayed, toilets did not flush, pilot parked to far away from Gate

10.0 Wonderful

David, Jan 2026

Was happy we finally got upgraded in 1st class. The seat getting old. The cushiness need some improvement.

8.0 Very good

David, Jan 2026

Safe made to destination. Late to start at GVA for icy reasons but we fought our next fly.

8.0 Very good

Anonymous, Jan 2026

I just think it’s unfortunate that Airlines have completely abandoned the idea of serving any kind of decent or even real food on flights, not even on a four hour flight!? Those days are gone, I guess.

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Find cheap United Airlines flights to San Diego from $59

Search hundreds of travel sites at once for deals on United Airlines flights to San Diego

Cheap United Airlines Flight Deals to San Diego

Recent round-trip United Airlines flight deals to San Diego

Recent one-way United Airlines flight deals to San Diego

Recent last minute United Airlines flight deals to San Diego

Recent direct United Airlines flight deals to San Diego

Good to know

When to book flights with United Airlines to San Diego

FAQs for flying to San Diego with United Airlines

Is United Airlines cheaper than other airlines flying to San Diego?

With an average return price of $372, United Airlines is cheaper than Breeze Airways when it comes to flights to San Diego. However, the cheapest airline flying to San Diego is Frontier, with an average return price of $212.

Which other airlines fly to San Diego?

Along with United Airlines, you can also fly to San Diego with Southwest, Breeze Airways, Alaska Airlines, Frontier, Alaska Airlines, Delta, Breeze Airways and American Airlines.

How much is a flight to San Diego with United Airlines?

On average, United Airlines flights to San Diego cost $372 for a round-trip.

Which airport do United Airlines flights to San Diego fly into?

You’ll fly into San Diego Airport when flying to San Diego with United Airlines.

Are there any other airlines in Star Alliance that fly to San Diego?

Unfortunately, there are no other airlines in Star Alliance that fly to San Diego.

Top tips for your flights to San Diego with United Airlines

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