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

With an average return price of $447, 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 $264.

Which other airlines fly to San Diego?

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

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

On average, United Airlines flights to San Diego cost $277 for one-way and $447 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

Wed, Jul 29 - Wed, Aug 5

8:15 am - 9:59 am

SFO

SAN

1h 44mnonstop

11:55 am - 1:41 pm

SAN

SFO

1h 46mnonstop

$117United Airlines

Sat, Jun 6 - Tue, Jun 9

10:42 pm - 12:30 am

SFO

SAN

1h 48mnonstop

1:39 pm - 3:19 pm

SAN

SFO

1h 40mnonstop

$127United Airlines

Thu, Jul 30 - Sat, Aug 1

6:38 am - 8:22 am

SFO

SAN

1h 44mnonstop

6:20 am - 8:04 am

SAN

SFO

1h 44mnonstop

$137United Airlines

Thu, Jul 30 - Sat, Aug 1

6:00 am - 10:08 am

SFO

SAN

4h 08m

1 stop

6:20 am - 8:04 am

SAN

SFO

1h 44mnonstop

$147United Airlines

Fri, Jun 5 - Mon, Jun 8

9:00 pm - 10:25 pm

DEN

SAN

2h 25mnonstop

6:55 pm - 10:27 pm

SAN

DEN

2h 32mnonstop

$157United Airlines

Wed, Jun 3 - Tue, Jun 9

7:45 pm - 11:54 pm

SFO

SAN

4h 09m

1 stop

6:20 am - 10:45 am

SAN

SFO

4h 25m

1 stop

$157United Airlines

Mon, Jun 1 - Mon, Jun 8

7:20 pm - 8:46 pm

DEN

SAN

2h 26mnonstop

6:35 am - 10:08 am

SAN

DEN

2h 33mnonstop

$162United Airlines

Wed, Jun 3 - Sun, Jun 7

6:00 am - 10:08 am

SFO

SAN

4h 08m

1 stop

7:15 am - 9:01 am

SAN

SFO

1h 46mnonstop

$167United Airlines

Mon, Jun 1 - Tue, Jun 2

5:20 am - 9:59 am

DEN

SAN

5h 39m

1 stop

4:07 pm - 7:39 pm

SAN

DEN

2h 32mnonstop

$172United Airlines

Sun, May 31 - Thu, Jun 4

6:00 am - 9:59 am

DEN

SAN

4h 59m

1 stop

6:35 am - 10:08 am

SAN

DEN

2h 33mnonstop

$177United Airlines

Useful Info

Low season	December
High season	March
Cheapest flight	$59
Average price round-trip	$339
Good deal one-way	$237

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

Most popular time to fly with an average 1% 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 $447, 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 $264.
Which other airlines fly to San Diego?
Along with United Airlines, you can also fly to San Diego with Southwest, Delta, Delta, Alaska Airlines, Breeze Airways, Breeze Airways, Frontier, Alaska Airlines and American Airlines.
How much is a flight to San Diego with United Airlines?
On average, United Airlines flights to San Diego cost $277 for one-way and $447 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

Good9,712 verified ratings

7.7Boarding

7.3Comfort

8.1Crew

6.6Food

7.1Entertainment

6.0 Okay

Steve, May 2026

Delayed, no ramp at gate, waited another 20 minutes

2.0 Poor

Anonymous, May 2026

The clerk at check in for my bags was very rude. My credit card was hacked during my vacation and she told me it was not possible to pay in cash for my bag. “You bought the cheapest ticket, you should have bought a ticket that included a bag. If you cannot pay with a credit card, we will not let you on this flight”. She spoke to her supervisor and then told me , I could ask other passengers, if they would use their credit card to check my bag. I had to beg 5 different people, till one agreed to use their credit card. I payed them cash of course. This was a very stressful and humiliating experience for me. I strongly suggest you build in some kind of provision for travelers who got robbed.

10.0 Wonderful

Anonymous, May 2026

Excellent! I got to Munich and was transferred to my Lufthansa flight quickly, in 15 to 20 minutes, so I did not miss my flight. However, I had checked my overhead bag at the boarding gate in Tampa. That got to Tunis the next day. That is to be expected.

4.0 Mediocre

ziv, May 2026

Mediocre service and conditions. Plastic uncomfortable seats

10.0 Wonderful

Anonymous, May 2026

It's a short hop. My carryon was checked at the gate, I didn't have to drag it all over the airport. Excellent wheelchair assist.

2.0 Poor

Annie, May 2026

It was 2 hrs delayed

8.0 Very good

Charlotte, May 2026

Flight Crew was superior.

8.0 Very good

Charlotte, May 2026

Narrow seats.

10.0 Wonderful

Miriam, May 2026

Awesome

10.0 Wonderful

Manoj, May 2026

Pretty quick and comfortable trip

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Cheap United Airlines Flight Deals to San Diego

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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 $447, 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 $264.

Which other airlines fly to San Diego?

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

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

On average, United Airlines flights to San Diego cost $277 for one-way and $447 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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Everything you need to know for your flight to San Diego

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