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

With an average return price of $361, United Airlines is cheaper than Breeze Airways and Alaska Airlines when it comes to flights to San Diego. However, the cheapest airline flying to San Diego is Frontier, with an average return price of $216.

Which other airlines fly to San Diego?

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

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

On average, United Airlines flights to San Diego cost $447 for one-way and $361 return.

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

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

Sat, May 23 - Sat, May 30

10:42 pm - 12:30 am

SFO

SAN

1h 48mnonstop

4:09 pm - 5:49 pm

SAN

SFO

1h 40mnonstop

$117United Airlines

Sat, May 23 - Tue, May 26

10:42 pm - 12:30 am

SFO

SAN

1h 48mnonstop

9:26 am - 11:12 am

SAN

SFO

1h 46mnonstop

$127United Airlines

Mon, May 11 - Thu, May 14

8:46 pm - 10:16 pm

DEN

SAN

2h 30mnonstop

7:00 pm - 10:31 pm

SAN

DEN

2h 31mnonstop

$137United Airlines

Tue, May 26 - Wed, May 27

7:45 pm - 11:54 pm

SFO

SAN

4h 09m

1 stop

1:39 pm - 3:19 pm

SAN

SFO

1h 40mnonstop

$137United Airlines

Sat, May 23 - Sat, May 30

6:45 pm - 11:54 pm

SFO

SAN

5h 09m

1 stop

9:07 am - 10:53 am

SAN

SFO

1h 46mnonstop

$147United Airlines

Wed, May 20 - Mon, May 25

7:45 am - 9:15 am

DEN

SAN

2h 30mnonstop

6:55 pm - 10:27 pm

SAN

DEN

2h 32mnonstop

$153United Airlines

Wed, May 13 - Mon, May 18

3:49 pm - 5:19 pm

DEN

SAN

2h 30mnonstop

7:00 pm - 10:31 pm

SAN

DEN

2h 31mnonstop

$157United Airlines

Sat, May 16 - Mon, May 18

4:41 pm - 6:33 pm

SFO

SAN

1h 52mnonstop

6:05 pm - 9:44 pm

SAN

SFO

3h 39m

1 stop

$157United Airlines

Wed, May 20 - Wed, May 20

8:14 am - 9:58 am

SFO

SAN

1h 44mnonstop

6:05 pm - 9:34 pm

SAN

SFO

3h 29m

1 stop

$160United Airlines

Tue, May 19 - Sun, May 24

8:14 am - 9:58 am

SFO

SAN

1h 44mnonstop

9:26 am - 11:12 am

SAN

SFO

1h 46mnonstop

$162United Airlines

Useful Info

Low season	December
High season	March
Cheapest flight	$59
Average price round-trip	$391
Good deal round-trip	$332

Best time to beat the crowds but there is an average 17% increase in price.

Flight from San Francisco 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 $361, United Airlines is cheaper than Breeze Airways and Alaska Airlines when it comes to flights to San Diego. However, the cheapest airline flying to San Diego is Frontier, with an average return price of $216.
Which other airlines fly to San Diego?
Along with United Airlines, you can also fly to San Diego with Southwest, Alaska Airlines, Alaska Airlines, Breeze Airways, Breeze Airways, Delta, American Airlines and Frontier.
How much is a flight to San Diego with United Airlines?
On average, United Airlines flights to San Diego cost $447 for one-way and $361 return.
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.

The cheapest flight to San Diego with United Airlines found on KAYAK in the last 2 weeks departed from Houston George Bush Intcntl Airport and cost $90.
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

Good9,602 verified ratings

7.7Boarding

7.3Comfort

7.1Entertainment

8.1Crew

6.6Food

4.0 Mediocre

Anonymous, Apr 2026

The entertainment options on the seat back video boards were nice.

4.0 Mediocre

Sarah, Apr 2026

The flight I was supposed to be on was supposed to take off at 1:50 from State College. It was delayed over and over and over again until somehow I had to rebook on a flight that was supposed to have left State College at 8 am that morning but didn't end up taking off until almost 6 pm. Not only was this completely unacceptable, the "token from United" was a 15 dollar meal voucher that has to be used by today. I would personally like some miles added to my account for this inconvenience. I was in transit for 8 hours from the time I arrive at State College Aiport to when I got home. I was supposed to be home at 3 pm and I returned at 8 pm. Unacceptable. I have not been on an on Time united flight in nearly 5 years.

2.0 Poor

Anonymous, Apr 2026

Flight cancelled

4.0 Mediocre

Anonymous, Apr 2026

Dinner was good, but the breakfast served in the morning was horrible.

6.0 Okay

Alejandro, Apr 2026

Crew was friendly. Seats are too narrow, particularly when a big person is in the adjacent seat, but I understand this is due to smaller planes usually flight into Lincoln. I have experienced several flight delays going out and coming into Lincoln airport, I say maybe 50% or higher of the flights I've taken out of this airport have been delayed.

8.0 Very good

Alejandro, Apr 2026

newer aircraft, ability to connect my headset via blue tooth for entertainment.

10.0 Wonderful

Dr. Joseph, Apr 2026

Great flight. Boarded efficiently. Arrived early at CLT. There was no in flight entertainment on this aircraft. Great crew.

2.0 Poor

Anonymous, Apr 2026

Due to cancellation of connecting flight (Lufthansa) I didn’t fly with United

8.0 Very good

Corrine, Apr 2026

The seat was comfortable. There was a lot of turbulence. If it weren't for that,it would have been okay.

6.0 Okay

Fabian, Apr 2026

Lounges are packed and very poor, food is really bad, for business class in an airline is well below expectations

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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 $361, United Airlines is cheaper than Breeze Airways and Alaska Airlines when it comes to flights to San Diego. However, the cheapest airline flying to San Diego is Frontier, with an average return price of $216.

Which other airlines fly to San Diego?

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

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

On average, United Airlines flights to San Diego cost $447 for one-way and $361 return.

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.

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