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 $79

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 2 - Sat, May 2

6:30 am - 8:04 am

SFO

SAN

1h 34mnonstop

1:35 pm - 3:21 pm

SAN

SFO

1h 46mnonstop

$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

Sat, May 23 - Sat, May 23

8:15 am - 9:59 am

SFO

SAN

1h 44mnonstop

4:09 pm - 5:49 pm

SAN

SFO

1h 40mnonstop

$128United Airlines

Wed, May 13 - Wed, May 20

8:45 pm - 10:37 pm

SFO

SAN

1h 52mnonstop

6:20 am - 10:48 am

SAN

SFO

4h 28m

1 stop

$137United Airlines

Sat, May 2 - Mon, May 4

8:45 pm - 10:37 pm

SFO

SAN

1h 52mnonstop

11:04 am - 12:50 pm

SAN

SFO

1h 46mnonstop

$147United Airlines

Sat, May 16 - Mon, May 18

6:30 am - 8:04 am

SFO

SAN

1h 34mnonstop

6:05 pm - 9:34 pm

SAN

SFO

3h 29m

1 stop

$157United 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

Sat, May 9 - Tue, May 12

7:08 am - 11:54 am

SEA

SAN

4h 46m

1 stop

1:35 pm - 9:06 pm

SAN

SEA

7h 31m

1 stop

$166United Airlines

Sat, May 16 - Mon, May 18

6:30 am - 8:04 am

SFO

SAN

1h 34mnonstop

6:05 pm - 9:34 pm

SAN

SFO

3h 29m

1 stop

$167United Airlines

Sat, May 16 - Mon, May 18

6:30 am - 8:04 am

SFO

SAN

1h 34mnonstop

6:05 pm - 9:34 pm

SAN

SFO

3h 29m

1 stop

$168United Airlines

Useful Info

Low season	December
High season	March
Cheapest flight	$79
Average price round-trip	$269
Good deal round-trip	$228
Good deal one-way	$203

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

Good9,589 verified ratings

6.6Food

7.3Comfort

8.1Crew

7.1Entertainment

7.7Boarding

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

10.0 Wonderful

Dan, Apr 2026

Good job!

8.0 Very good

Dan, Apr 2026

The international / itallian speakers did not seem as friendly and professional as the others. Drink selections were denied ( a beer) until questioned about lack of ANY beer on the plane and then four options were given.

10.0 Wonderful

Hartaj, Apr 2026

It was a red-eye, but the flight felt surprisingly quick. The seats were very comfortable, and that made resting much easier. I also want to thank the gentleman seated next to me, who graciously moved so my mom could sit beside me. We slept almost the entire way. The cabin crew was respectful in not disturbing us, while also being courteous and professional throughout. Thank you, United.

10.0 Wonderful

Anonymous, Apr 2026

very surprised by the quality of the food

4.0 Mediocre

Anonymous, Apr 2026

Packed in plane small uncomfortable seats elbow to elbow nobody wants to be in that situation for the money they paid

6.0 Okay

Anonymous, Apr 2026

It was a more comfortable seat don't get stuck in middle, makes for uncomfortable situation

6.0 Okay

Anonymous, Apr 2026

Comfort, don't think I will fly United again not worth the money to be packed in like a sardine.

8.0 Very good

Anonymous, Apr 2026

Vegetarian selection could be better. Bread was too hard to chew.

6.0 Okay

Anonymous, Apr 2026

Business class would have been better , poor quality blanket , services

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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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