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

With an average return price of $480, United Airlines is the most expensive airline flying into San Diego. The cheapest airline flying to San Diego is Allegiant Air.

Which other airlines fly to San Diego?

Along with United Airlines, you can also fly to San Diego with Southwest, Hawaiian Airlines, Allegiant Air, Breeze Airways, Breeze Airways, Frontier, Allegiant Air, Spirit Airlines, Alaska Airlines, Sun Country Air and American Airlines.

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

On average, United Airlines flights to San Diego cost $294 for one-way and $480 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 $57

Flights Deals

Cheap United Airlines Flight Deals to San Diego

Here are some of the best deals found on KAYAK recently from United Airlines to San Diego that are departing in the next months. While these flights were available on KAYAK in the last 72 hours, prices and availability are subject to change and deals may expire.

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, Aug 6 - Wed, Aug 13

9:08 pm - 10:42 pmSFO-SAN

1h 34mnonstop

7:27 pm - 9:05 pmSAN-SFO

1h 38mnonstop

$79United Airlines

Find Deal

Mon, Aug 4 - Tue, Aug 5

10:35 pm - 12:15 amSFO-SAN

1h 40mnonstop

6:20 am - 7:58 amSAN-SFO

1h 38mnonstop

$82United Airlines

Find Deal

Fri, Aug 1 - Tue, Aug 5

10:35 pm - 12:15 amSFO-SAN

1h 40mnonstop

4:00 pm - 5:38 pmSAN-SFO

1h 38mnonstop

$83United Airlines

Find Deal

Fri, Jul 25 - Wed, Jul 30

10:35 pm - 12:15 amSFO-SAN

1h 40mnonstop

6:20 am - 7:58 amSAN-SFO

1h 38mnonstop

$86United Airlines

Find Deal

Fri, Aug 8 - Tue, Aug 12

7:00 am - 8:38 amSFO-SAN

1h 38mnonstop

6:20 am - 7:58 amSAN-SFO

1h 38mnonstop

$90United Airlines

Find Deal

Wed, Aug 6 - Fri, Aug 8

10:35 pm - 12:15 amSFO-SAN

1h 40mnonstop

6:20 am - 7:58 amSAN-SFO

1h 38mnonstop

$91United Airlines

Find Deal

Fri, Aug 1 - Wed, Aug 6

10:35 pm - 12:15 amSFO-SAN

1h 40mnonstop

6:20 am - 7:58 amSAN-SFO

1h 38mnonstop

$92United Airlines

Find Deal

Tue, Aug 5 - Fri, Aug 8

10:35 pm - 12:15 amSFO-SAN

1h 40mnonstop

6:20 am - 7:58 amSAN-SFO

1h 38mnonstop

$96United Airlines

Find Deal

Thu, Aug 28 - Wed, Sep 3

10:37 pm - 12:15 amSFO-SAN

1h 38mnonstop

6:15 am - 7:56 amSAN-SFO

1h 41mnonstop

$97United Airlines

Find Deal

Wed, Aug 6 - Sat, Aug 9

9:08 pm - 10:42 pmSFO-SAN

1h 34mnonstop

6:20 am - 7:58 amSAN-SFO

1h 38mnonstop

$99United Airlines

Find Deal

Useful Info

Low season	January
High season	July
Cheapest flight	$57
Average price round-trip	$428
Good deal round-trip	$307
Good deal one-way	$189

Best time to beat the crowds with an average 9% drop in price.

Most popular time to fly and prices are also 0% 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 $480, United Airlines is the most expensive airline flying into San Diego. The cheapest airline flying to San Diego is Allegiant Air.
Which other airlines fly to San Diego?
Along with United Airlines, you can also fly to San Diego with Southwest, Hawaiian Airlines, Allegiant Air, Breeze Airways, Breeze Airways, Frontier, Allegiant Air, Spirit Airlines, Alaska Airlines, Sun Country Air and American Airlines.
How much is a flight to San Diego with United Airlines?
On average, United Airlines flights to San Diego cost $294 for one-way and $480 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.

Looking to fly from the United States to San Diego with United Airlines? 25% of our users found flights for the following prices or less: From Houston George Bush Intcntl Airport $254 one-way, $397 round-trip.
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 $121.

7.4

GoodBased on 8,846 verified guest reviews

6.6Food

8.1Crew

7.0Entertainment

7.7Boarding

7.3Comfort

Pros +

Cons -

Show reviews that mention

4.0 Mediocre

Jeanette, Jul 2025

I liked the choice of lemon ginger tea. I think stewardesses can be more considerate of older people needs.

4.0 Mediocre

Jeanette, Jul 2025

I would have liked an opportunity to move to a different seat ( even would have checked in my hand luggage)as I had health issues where I didn't have to clamber over the passenger next to me to for toilet use/ movement [ She was a highly unpleasant neighbor to sit next to]. In addition, I found that my European phone plan had run out of data and so I was not receiving emails from yourselves on airport wifi to be able to check in online and verifications difficult as did not accept the ticket number I had. I asked for an extra blanket but was told there was none. Then I saw other passengers receiving them. I couldn't eat the food and asked for snacks : Stewardess said " on the way" but they did not bring. The best bit was the check in process in Lisbon. Very efficient. However, I did not understand why we had to collect our bags at Washington then go through customs again. It was not explained. I also with my leg and health issue had approximately mile walk to the gate ( which then changed) . There appeared to be no moving walkways or help provided.

2.0 Poor

Johnnie, Jul 2025

More racist flight attandants maybe because i sm an attracticted darkskin latino man but once again bad flight attamdants they ignored me the whole flight even the woman sitting next to me notice how rude they were towards me i really never want to fly united or american airlines they alawsys have the rudesslt and racist flight attandants

8.0 Very good

yesmy, Jul 2025

The food should improve! And The flight should leave on time and not make the traveler wait.

8.0 Very good

Anonymous, Jul 2025

It was great, I’m very grateful for the pilots and crew flight attendants for everything.

10.0 Wonderful

Lawrence, Jul 2025

Everything was great. Only thing that could’ve made it better was buy on board options for hot food, but the snacks were decent. The flight attendants were great. I had no complaints. I was able to make it to my destination safely

10.0 Wonderful

Gal, Jul 2025

We loved the United lounge near our gate and a rep named Aimee who was GREAT

10.0 Wonderful

Marcel, Jul 2025

A little bit more leg room in premium economy. I am 6’4”.

10.0 Wonderful

Chris, Jul 2025

Awesome

8.0 Very good

Johanna, Jul 2025

Overall it was good. I missed my connection but I was put on another flight.

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Find cheap United Airlines flights to San Diego from $57

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Cheap United Airlines Flight Deals to San Diego

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Recent direct United Airlines flight deals 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?

Which other airlines fly to San Diego?

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

Which airport do United Airlines flights to San Diego fly into?

Are there any other airlines in Star Alliance that fly to San Diego?

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