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

With an average return price of $422, United Airlines is cheaper than Delta when it comes to flights to San Diego. However, the cheapest airline flying to San Diego is Frontier, with an average return price of $280.

Which other airlines fly to San Diego?

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

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

On average, United Airlines flights to San Diego cost $262 for one-way and $422 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 $69

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

Tue, Jun 16 - Tue, Jun 23

10:05 am - 11:51 am

SFO

SAN

1h 46mnonstop

11:01 am - 12:47 pm

SAN

SFO

1h 46mnonstop

$137United Airlines

Sat, Jul 18 - Mon, Jul 20

7:00 pm - 8:53 pm

SFO

SAN

1h 53mnonstop

6:20 am - 8:04 am

SAN

SFO

1h 44mnonstop

$147United Airlines

Sat, Jun 6 - Tue, Jun 9

7:20 pm - 8:46 pm

DEN

SAN

2h 26mnonstop

6:55 pm - 10:27 pm

SAN

DEN

2h 32mnonstop

$157United Airlines

Sat, Jun 6 - Tue, Jun 9

6:45 pm - 11:54 pm

SFO

SAN

5h 09m

1 stop

6:20 am - 10:45 am

SAN

SFO

4h 25m

1 stop

$157United Airlines

Thu, Jul 23 - Mon, Jul 27

10:41 pm - 12:30 am

SFO

SAN

1h 49mnonstop

6:20 am - 10:45 am

SAN

SFO

4h 25m

1 stop

$164United Airlines

Sat, Jun 6 - Mon, Jun 8

7:45 pm - 11:54 pm

SFO

SAN

4h 09m

1 stop

11:01 am - 12:47 pm

SAN

SFO

1h 46mnonstop

$167United Airlines

Fri, Jun 5 - Mon, Jun 8

9:00 pm - 10:25 pm

DEN

SAN

2h 25mnonstop

6:27 pm - 12:47 am

SAN

DEN

5h 20m

1 stop

$172United Airlines

Thu, Jul 30 - Sun, Aug 2

10:41 pm - 12:30 am

SFO

SAN

1h 49mnonstop

6:12 am - 7:56 am

SAN

SFO

1h 44mnonstop

$177United Airlines

Fri, Jul 17 - Mon, Jul 20

7:00 pm - 8:53 pm

SFO

SAN

1h 53mnonstop

6:20 am - 10:45 am

SAN

SFO

4h 25m

1 stop

$187United Airlines

Wed, Jul 29 - Wed, Aug 5

5:15 am - 9:59 am

SEA

SAN

4h 44m

1 stop

7:41 pm - 1:29 am

SAN

SEA

5h 48m

1 stop

$189United Airlines

Useful Info

Low season	December
High season	June
Cheapest flight	$69
Average price round-trip	$353
Good deal one-way	$292

Best time to beat the crowds but there is an average 16% increase in price.

Most popular time to fly with an average 8% 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 $422, United Airlines is cheaper than Delta when it comes to flights to San Diego. However, the cheapest airline flying to San Diego is Frontier, with an average return price of $280.
Which other airlines fly to San Diego?
Along with United Airlines, you can also fly to San Diego with Southwest, Alaska Airlines, Delta, Alaska Airlines, Breeze Airways, Breeze Airways, Frontier, Delta, Sun Country Air and American Airlines.
How much is a flight to San Diego with United Airlines?
On average, United Airlines flights to San Diego cost $262 for one-way and $422 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 $116.
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

Good9,733 verified ratings

8.1Crew

7.1Entertainment

6.6Food

7.7Boarding

7.3Comfort

4.0 Mediocre

Anonymous, May 2026

First class ticket gets you no seat back entertainment? I have to bring my own laptop to see a movie? And most of their movies have ADS? No thank you. Worse: Tiny snacks only on a 2 hr flight?

6.0 Okay

LorriMarie, May 2026

The flight to Houston the agents were not very helpful

4.0 Mediocre

Douglas, May 2026

Late- that’s what United does best. Missed my connection, rebooked to a flight 17 hours later and had to spend $500 on a hotel. What did I get? A $15 meal voucher. What can you get in an airport for $15. I hate United so much.

8.0 Very good

Tansia, May 2026

Not complaining

10.0 Wonderful

Saad, May 2026

Flight attendant was very nice

2.0 Poor

Babu, May 2026

OK, I don’t expect much from coach class. Everything basically is pretty lousy. But at least I expect my bloody luggage to get from A to B. Tap Airlines lost my luggage and it has been more than 24 hours in Lisbon and they still have not located my luggage. On top of that, they are incredibly unhelpful. They feel actually dismissive. This lousy customer service.

10.0 Wonderful

Babu, May 2026

Boarding felt messy and disorganized.

6.0 Okay

Anonymous, May 2026

I would have liked to have been served more food when it came to Panama to Newark

2.0 Poor

Anonymous, May 2026

Horrible, absolutely horrible. The airline overbooked the flight, did NOT assign seats and boarding was a hot mess with lots of confused passengers. There was no "large plane" gate for us, the 500+ passengers were squeezed in a small hold room area, and multiple busses had to shuttle us to the other side of the airfield, where boarding of the plane, that was parked on the ramp, took place in rain. The old plane had a broken seat, that the technicians tried to fix - with no success - resulting in a 50min delay. The flight attendant with heart shaped earnings with German flag was screaming on the passengers without a reason, was extremely rude and entitled the entire flight. The food was junk. I hope I don't have to fly United ever again.

8.0 Very good

Anonymous, May 2026

Quick boarding. We left on time even though the plane came in late.

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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 $422, United Airlines is cheaper than Delta when it comes to flights to San Diego. However, the cheapest airline flying to San Diego is Frontier, with an average return price of $280.

Which other airlines fly to San Diego?

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

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

On average, United Airlines flights to San Diego cost $262 for one-way and $422 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.

Top tips for your flights to San Diego with United Airlines

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