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

With an average return price of $373, United Airlines is cheaper than Alaska Airlines and Breeze Airways when it comes to flights to San Diego. However, the cheapest airline flying to San Diego is Frontier, with an average return price of $239.

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, American Airlines and Frontier.

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

On average, United Airlines flights to San Diego cost $369 for one-way and $373 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, May 20 - Sat, May 23

8:45 pm - 10:37 pm

SFO

SAN

1h 52mnonstop

11:01 am - 12:47 pm

SAN

SFO

1h 46mnonstop

$117United Airlines

Sat, May 16 - Tue, May 19

7:05 pm - 11:59 pm

SFO

SAN

4h 54m

1 stop

4:26 pm - 6:09 pm

SAN

SFO

1h 43mnonstop

$137United Airlines

Sat, May 16 - Tue, May 19

4:41 pm - 6:33 pm

SFO

SAN

1h 52mnonstop

6:20 am - 10:48 am

SAN

SFO

4h 28m

1 stop

$147United Airlines

Mon, May 11 - Thu, May 14

10:40 pm - 12:28 am

SFO

SAN

1h 48mnonstop

6:05 pm - 10:59 pm

SAN

SFO

4h 54m

1 stop

$148United Airlines

Sat, May 16 - Wed, May 20

1:26 pm - 2:56 pm

DEN

SAN

2h 30mnonstop

6:32 am - 10:09 am

SAN

DEN

2h 37mnonstop

$155United 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

$155United Airlines

Fri, May 29 - Mon, Jun 1

9:00 pm - 10:25 pm

DEN

SAN

2h 25mnonstop

6:55 pm - 10:27 pm

SAN

DEN

2h 32mnonstop

$156United Airlines

Tue, May 12 - Wed, May 27

1:26 pm - 2:56 pm

DEN

SAN

2h 30mnonstop

6:55 pm - 10:27 pm

SAN

DEN

2h 32mnonstop

$157United Airlines

Wed, May 13 - Thu, May 14

10:40 pm - 12:28 am

SFO

SAN

1h 48mnonstop

6:20 am - 11:48 am

SAN

SFO

5h 28m

1 stop

$157United Airlines

Tue, Sep 1 - Thu, Sep 10

7:25 pm - 12:29 am

DEN

SAN

6h 04m

1 stop

6:55 pm - 10:24 pm

SAN

DEN

2h 29mnonstop

$161United Airlines

Useful Info

Low season	December
High season	April
Cheapest flight	$59
Average price round-trip	$395
Good deal round-trip	$336
Good deal one-way	$816

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

Most popular time to fly and prices are also 5% lower on average.

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 $373, United Airlines is cheaper than Alaska Airlines and Breeze Airways when it comes to flights to San Diego. However, the cheapest airline flying to San Diego is Frontier, with an average return price of $239.
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, American Airlines and Frontier.
How much is a flight to San Diego with United Airlines?
On average, United Airlines flights to San Diego cost $369 for one-way and $373 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

Good9,635 verified ratings

6.6Food

7.1Entertainment

7.7Boarding

7.3Comfort

8.1Crew

2.0 Poor

Omar, Apr 2026

They told us yesterday APR21st that they were cleaning the plane and we got delayed. After that they said they didn't had any crew for the flight so they cancelled the flight till next day.

6.0 Okay

Anonymous, Apr 2026

very average service no complimentary alcoholics drinks unlike other airlines such as Porter airlines No decent seats available during check-in time the day before

8.0 Very good

Sally, Apr 2026

The crew was great. Very friendly and responsive. The plane was old, small and tight. We ran out of overhead space and I had to check. Middle seat was particularly tight.

8.0 Very good

Sandra, Apr 2026

Flight itself excellent, but delayed so missed connection & got to destination 2 hrs later

10.0 Wonderful

Anonymous, Apr 2026

The flight crew on this leg of my trip was very friendly and pleasant. Every one of them was humorous, as well as helpful and accommodating. This group was BY FAR the best crew I’ve flown with. They deserve kudos.

10.0 Wonderful

Janey, Apr 2026

It was a really seamless flight and the entertainment selection was excellent.

10.0 Wonderful

Anonymous, Apr 2026

Pleasant

10.0 Wonderful

Anonymous, Apr 2026

Pleasant

8.0 Very good

Anonymous, Apr 2026

Pleasant

2.0 Poor

Kelly, Apr 2026

boarded early to only find out that flight would sit at gate for 45 min to an hour. Landed in chicago and sat on runway for over an hour before got to gate. Total delay was extensive for a 45 min flight door to door.

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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 $373, United Airlines is cheaper than Alaska Airlines and Breeze Airways when it comes to flights to San Diego. However, the cheapest airline flying to San Diego is Frontier, with an average return price of $239.

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, American Airlines and Frontier.

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

On average, United Airlines flights to San Diego cost $369 for one-way and $373 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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