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

With an average return price of $406, 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 $261.

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, Alaska Airlines, Frontier 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 $406 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, Jun 3 - Wed, Jun 10

8:15 am - 9:59 am

SFO

SAN

1h 44mnonstop

11:55 am - 1:41 pm

SAN

SFO

1h 46mnonstop

$137United Airlines

Wed, May 27 - Wed, May 27

6:00 am - 10:08 am

SFO

SAN

4h 08m

1 stop

4:09 pm - 5:49 pm

SAN

SFO

1h 40mnonstop

$147United Airlines

Sat, Jun 6 - 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

Sat, Aug 8 - Sat, Aug 8

8:15 am - 9:59 am

SFO

SAN

1h 44mnonstop

4:09 pm - 5:49 pm

SAN

SFO

1h 40mnonstop

$163United Airlines

Thu, May 28 - Tue, Jun 2

10:42 pm - 12:30 am

SFO

SAN

1h 48mnonstop

6:20 am - 10:45 am

SAN

SFO

4h 25m

1 stop

$167United Airlines

Sat, Jun 6 - Sat, Jun 13

10:42 pm - 12:30 am

SFO

SAN

1h 48mnonstop

11:44 am - 1:30 pm

SAN

SFO

1h 46mnonstop

$172United Airlines

Sat, Aug 8 - Sat, Aug 8

6:00 am - 10:08 am

SFO

SAN

4h 08m

1 stop

4:09 pm - 5:49 pm

SAN

SFO

1h 40mnonstop

$173United Airlines

Fri, Jun 5 - Mon, Jun 8

6:38 am - 8:22 am

SFO

SAN

1h 44mnonstop

1:39 pm - 3:19 pm

SAN

SFO

1h 40mnonstop

$177United Airlines

Wed, Jul 15 - Wed, Jul 22

7:05 pm - 12:31 am

SEA

SAN

5h 26m

1 stop

7:41 pm - 1:13 am

SAN

SEA

5h 32m

1 stop

$179United Airlines

Sat, Jun 6 - Sat, Jun 13

6:45 pm - 11:54 pm

SFO

SAN

5h 09m

1 stop

11:44 am - 1:30 pm

SAN

SFO

1h 46mnonstop

$182United Airlines

Useful Info

Low season	December
High season	May
Cheapest flight	$69
Average price round-trip	$345
Good deal one-way	$237

Best time to beat the crowds but there is an average 13% 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 $406, 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 $261.
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, Alaska Airlines, Frontier 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 $406 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 $134.
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 May and prices are highest at this time. The cheapest month to fly is December.

7.4

Good9,693 verified ratings

7.7Boarding

6.6Food

7.3Comfort

8.1Crew

7.1Entertainment

10.0 Wonderful

Thomas, May 2026

Friendliest Flight Attendant I’ve seen since I flew on Southwest Airlines. The whole trip was outstanding…and arrived Early!

6.0 Okay

Anonymous, May 2026

It was good overall except from Omaha to Denver when flight a was a repeatedly delayed apparently due to some issue at Denver. Communications could have been handled better. I had to board then deboard with luggage and board again

6.0 Okay

Kinga, May 2026

I didn’t have a seat assignment and my seat was very dirty on the flight from Frankfurt to Budapest.

4.0 Mediocre

Maya, May 2026

Left an hour and a half after the listed time. Up side was it had TV screens on the seat.

4.0 Mediocre

Maya, May 2026

No screens or meal options. Freezing cold. Dirty seats. Left late.

8.0 Very good

Maya, May 2026

Great selection of shows and meals were good.

6.0 Okay

Anonymous, May 2026

O’hsre taxi and deboarding took 40 minutes. Needed 20 minutes extra time between connecting flights to avoid running through terminal.

10.0 Wonderful

Anonymous, May 2026

Wifi serves

4.0 Mediocre

Anonymous, May 2026

good crew but no good choice for food

10.0 Wonderful

Eirene, May 2026

Cree was organized and pleasant. Plane had good seating but as it’s a shuttle toilets hadn’t been thoroughly cleaned (eg. bins too full)

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Find cheap United Airlines flights to San Diego from $69

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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 $406, 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 $261.

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, Alaska Airlines, Frontier 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 $406 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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