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

With an average return price of $432, 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 $302.

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 and American Airlines.

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

On average, United Airlines flights to San Diego cost $237 for one-way and $432 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

7:00 pm - 8:53 pm

SFO

SAN

1h 53mnonstop

11:55 am - 1:41 pm

SAN

SFO

1h 46mnonstop

$137United Airlines

Tue, Jun 16 - Tue, Jun 23

6:45 pm - 11:54 pm

SFO

SAN

5h 09m

1 stop

11:55 am - 1:41 pm

SAN

SFO

1h 46mnonstop

$147United Airlines

Tue, Jun 16 - Wed, Jun 17

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

Wed, Jul 29 - Mon, Aug 3

7:40 pm - 11:54 pm

SFO

SAN

4h 14m

1 stop

6:20 am - 8:04 am

SAN

SFO

1h 44mnonstop

$160United Airlines

Wed, Jul 29 - Mon, Aug 3

4:47 pm - 6:39 pm

SFO

SAN

1h 52mnonstop

6:20 am - 10:45 am

SAN

SFO

4h 25m

1 stop

$162United Airlines

Sat, Jul 11 - Mon, Jul 13

10:42 pm - 12:31 am

SFO

SAN

1h 49mnonstop

10:49 am - 2:53 pm

SAN

SFO

4h 04m

1 stop

$164United Airlines

Thu, Jun 25 - Tue, Jun 30

10:41 pm - 12:30 am

SFO

SAN

1h 49mnonstop

6:20 am - 10:45 am

SAN

SFO

4h 25m

1 stop

$167United Airlines

Sat, Jul 25 - Sat, Aug 1

7:45 pm - 11:54 pm

SFO

SAN

4h 09m

1 stop

7:15 am - 9:01 am

SAN

SFO

1h 46mnonstop

$173United Airlines

Mon, Jun 15 - Wed, Jun 17

6:00 am - 10:08 am

SFO

SAN

4h 08m

1 stop

6:20 am - 10:45 am

SAN

SFO

4h 25m

1 stop

$177United Airlines

Thu, Jun 18 - Tue, Jun 23

6:00 am - 10:08 am

SFO

SAN

4h 08m

1 stop

11:01 am - 12:47 pm

SAN

SFO

1h 46mnonstop

$182United Airlines

Useful Info

Low season	December
High season	June
Cheapest flight	$69
Average price round-trip	$381
Good deal one-way	$207

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

Most popular time to fly with an average 9% 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 $432, 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 $302.
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 and American Airlines.
How much is a flight to San Diego with United Airlines?
On average, United Airlines flights to San Diego cost $237 for one-way and $432 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 June and prices are highest at this time. The cheapest month to fly is December.

7.4

Good9,749 verified ratings

7.7Boarding

7.1Entertainment

8.1Crew

7.3Comfort

6.6Food

10.0 Wonderful

Steve, May 2026

Easy of boarding, helpfully staff at check in, surprisingly comfortable seating

8.0 Very good

Anonymous, May 2026

Check in was chaotic with only one counter for business class and first class. The luggage conveyor belt at JFK airport was broken so the flight departure was delayed which made the flight stressful as I had a tight connection. Although the captain said they could make up the delay, they didn’t do so.

10.0 Wonderful

Anonymous, May 2026

Had a one hour delay due to mechanical issue. I didn’t think I’d be able to make my connecting flight, but they waited for me and greeted me when I arrived to help things run smooth.

6.0 Okay

Anonymous, May 2026

Lost of requested seat assignments. Lost my husband's meal choice

4.0 Mediocre

Anurag, May 2026

Broken tray table. Erratic service. Premium economy is more economy than premium- other airlines treat PE much better. No lounge access.

8.0 Very good

LorriMarie, May 2026

On time

2.0 Poor

Anonymous, May 2026

6 1/2 hours from Tampa to SFO on a Boeing 737. Cramped. No Service. No real food. One pass for coffee at the beginning and a second pass THREE hours later. And check-in in Tampa was nasty even by United standards. And I am at almost TWO million miles on United. It's a non-stop. But terrible service.

2.0 Poor

Chris, May 2026

MY FAMILY'S LUGGAGE WAS LOST FROM ROME TO BARI. I WAS THE ONLY ONE THAT RECEIVED MY LUGGAGE FROM ROME TO BARI. AFTER DEPLANING IN BARI, WE WASTED A LOT OF TIME AT BAG CLAIMS LOST AND FOUND REPORTING THE CLAIM AND PLEADING FOR THE BAGS TO BE DELIVERED THE NEXT DAY. WE WERE TOLD THAT IT TAKES 3 DAYS MINIMUM TO DELIVER. MY DAUGHTER AND MY GIRLFRIEND NEEDED THEIR PERSONAL THINGS AND WE WERE STAYING 3 HOURS AWAY FROM THE BARI AIRPORT. WE HAD TO DRIVE 3 HOURS TO THE AIRPORT TO COLLECT OUR LOST LUGGAGE THE NEXT DAY. WE ARE NOT HAPPY WITH THE EXPERIENCE

8.0 Very good

Sandy, May 2026

We had a delay, but thankfully I made it to my connection. Overall it went smooth

8.0 Very good

Sandy, May 2026

The flight had a delay but I made it to my connection. Flight was smooth overall

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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 $432, 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 $302.

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 and American Airlines.

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

On average, United Airlines flights to San Diego cost $237 for one-way and $432 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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