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

Wed, Jul 22 - Sat, Jul 25

10:42 pm - 12:31 am

SFO

SAN

1h 49mnonstop

6:20 am - 8:04 am

SAN

SFO

1h 44mnonstop

$137United Airlines

Thu, Jul 9 - Thu, Jul 9

6:00 am - 10:08 am

SFO

SAN

4h 08m

1 stop

7:41 pm - 9:28 pm

SAN

SFO

1h 47mnonstop

$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

Thu, Jul 9 - Sat, Jul 11

7:45 pm - 11:54 pm

SFO

SAN

4h 09m

1 stop

6:20 am - 8:04 am

SAN

SFO

1h 44mnonstop

$164United Airlines

Sat, Jun 20 - Tue, Jun 23

6:00 am - 10:08 am

SFO

SAN

4h 08m

1 stop

1:39 pm - 3:19 pm

SAN

SFO

1h 40mnonstop

$167United Airlines

Thu, Jul 23 - Sat, Jul 25

7:45 pm - 11:54 pm

SFO

SAN

4h 09m

1 stop

6:20 am - 8:04 am

SAN

SFO

1h 44mnonstop

$169United Airlines

Tue, Jun 16 - Sun, Jun 21

12:21 pm - 2:08 pm

SFO

SAN

1h 47mnonstop

6:15 am - 7:56 am

SAN

SFO

1h 41mnonstop

$177United Airlines

Wed, Aug 12 - Fri, Aug 14

5:20 pm - 10:47 pm

SEA

SAN

5h 27m

1 stop

6:28 pm - 11:26 pm

SAN

SEA

4h 58m

1 stop

$183United Airlines

Tue, Nov 17 - Sat, Nov 21

6:57 am - 12:13 pm

SEA

SAN

5h 16m

1 stop

7:41 pm - 12:33 am

SAN

SEA

4h 52m

1 stop

$186United Airlines

Mon, Jun 22 - Thu, Jun 25

7:45 pm - 11:54 pm

SFO

SAN

4h 09m

1 stop

6:20 am - 8:04 am

SAN

SFO

1h 44mnonstop

$187United Airlines

Useful Info

Low season	December
High season	June
Cheapest flight	$69
Average price round-trip	$383
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 6% 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

Good9,766 verified ratings

8.1Crew

7.3Comfort

6.6Food

7.7Boarding

7.1Entertainment

4.0 Mediocre

Denis, May 2026

These airplanes should be illegal. The seats are two tight, it is a safety issue. Wheelchair support was ridiculously slow. We almost missed our flight.

10.0 Wonderful

ricardo, May 2026

It was a short flight so I was expecting too much

2.0 Poor

Anonymous, May 2026

Horrifying Almost 2 million miles. Bring your own food and drink. One coffee or drink every three hours. Have to order meals on app more than 24 hours ahead Tiny and dirty bathrooms

10.0 Wonderful

Andria, May 2026

prompt, courteous, safe, orderly

8.0 Very good

Anizio, May 2026

Was good because we arrived on time

4.0 Mediocre

Anonymous, May 2026

Flight was delayed but more than 90 minutes. This caused me to miss my available windows for pick-up by a friend. I had to pay $125 for an uber back home from the airport which was an added expense that I had not budgeted for my trip. Staff was friendly.

4.0 Mediocre

ziv, May 2026

Uncomfortable plastic seats even in premium economy. No free wifi. Even paid wifi was spotty to nonexistent. Bad food. Much worse than economy on foreign carriers like Qantas.

10.0 Wonderful

Anonymous, May 2026

Service

8.0 Very good

Anonymous, May 2026

Professional and very nice people

2.0 Poor

Sandra, May 2026

How can you rate a flight when it is canceled after you leave the gate & 3 hours into sitting there or in remote area of airport after mechanical problems

Everything you need to know for your flight to San Diego

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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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