SAN

Find cheap United Airlines flights to San Diego from $40

1 adult
1 adult, Economy, 0 bags

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Flight 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.

Recent round-trip United Airlines flight deals to San Diego

Thu, Apr 9 - Mon, Apr 13
United Airlines Logo
9:00 pm - 10:30 pm
DEN
-
SAN
2h 30mnonstop
United Airlines Logo
7:14 pm - 10:45 pm
SAN
-
DEN
2h 31mnonstop
$95United Airlines
Tue, Mar 24 - Tue, Mar 31
United Airlines Logo
3:51 pm - 5:26 pm
DEN
-
SAN
2h 35mnonstop
United Airlines Logo
7:14 pm - 10:45 pm
SAN
-
DEN
2h 31mnonstop
$97United Airlines
Wed, Apr 15 - Sun, Apr 19
United Airlines Logo
9:00 pm - 10:30 pm
DEN
-
SAN
2h 30mnonstop
United Airlines Logo
6:32 am - 10:09 am
SAN
-
DEN
2h 37mnonstop
$106United Airlines
Thu, Apr 23 - Sat, Apr 25
United Airlines Logo
7:45 am - 9:16 am
DEN
-
SAN
2h 31mnonstop
United Airlines Logo
8:45 am - 12:18 pm
SAN
-
DEN
2h 33mnonstop
$107United Airlines
Thu, Apr 16 - Sun, Apr 19
United Airlines Logo
8:10 am - 9:54 am
SFO
-
SAN
1h 44mnonstop
United Airlines Logo
7:20 am - 9:06 am
SAN
-
SFO
1h 46mnonstop
$116United Airlines
Wed, Apr 1 - Sun, Apr 5
United Airlines Logo
7:00 am - 8:44 am
SFO
-
SAN
1h 44mnonstop
United Airlines Logo
6:36 am - 8:24 am
SAN
-
SFO
1h 48mnonstop
$117United Airlines
Wed, Mar 18 - Tue, Mar 24
United Airlines Logo
9:00 am - 10:40 am
SFO
-
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1h 40mnonstop
United Airlines Logo
11:03 am - 2:50 pm
SAN
-
SFO
3h 47m
1 stop
$118United Airlines
Fri, Apr 17 - Sun, Apr 19
United Airlines Logo
10:40 pm - 12:29 am
SFO
-
SAN
1h 49mnonstop
United Airlines Logo
6:36 am - 8:24 am
SAN
-
SFO
1h 48mnonstop
$121United Airlines
Thu, May 7 - Thu, May 14
United Airlines Logo
6:30 am - 8:04 am
SFO
-
SAN
1h 34mnonstop
United Airlines Logo
6:20 am - 10:48 am
SAN
-
SFO
4h 28m
1 stop
$126United Airlines
Wed, Mar 25 - Tue, Mar 31
United Airlines Logo
6:00 am - 10:22 am
SFO
-
SAN
4h 22m
1 stop
United Airlines Logo
6:36 am - 8:24 am
SAN
-
SFO
1h 48mnonstop
$127United Airlines
Useful Info

Good to know

Low seasonDecember
Cheapest flight$40
Average price round-trip$1,566
Good deal round-trip$1,331
Good deal one-way$660
Best time to beat the crowds but there is an average 13% increase in price.
Most popular time to fly with an average 6% increase in price.
Flight from Denver to San Diego
(avg. price over the last 2 weeks)
or less
or less

When to book flights with United Airlines to San Diego

Average price per month
Flight prices as travel date approaches

FAQs for flying to San Diego with United Airlines

  • Which other airlines fly to San Diego?

    Along with United Airlines, you can also fly to San Diego with Southwest, Alaska Airlines, Alaska Airlines, Breeze Airways and American Airlines.

  • 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.

Top tips for your flights to San Diego with United Airlines

  • 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.

United Airlines customer reviews

7.4
Good9,348 verified ratings
7.3Comfort
8.1Crew
7.7Boarding
6.6Food
7.1Entertainment
Traveler rating:
Sort by:
C
4.0 Mediocre
Crew was tired as we all were. Pretty abrupt. Flight was delayed. Not as enjoyable as the other 3 legs we flew.
A
6.0 Okay
Ok, didn’t care, short flight
A
6.0 Okay
Flight attendants were friendly & good service, food sucks, seats uncomfortable, not many Asian movies or shows flying from Hong Kong
A
8.0 Very good
The crew were amazing.
C
2.0 Poor
We got delayed three hours and nobody thought to have the bathroom fixed while we were sitting waiting to board? took a full hour to have maintenance come and check it off. Had to shut the bathroom down twice so that the pilots could go to the bathroom. Everyone missed their connections.
M
8.0 Very good
Good
A
8.0 Very good
Given I (and I’m assuming most people) have both carry in and a personal item included in their fare, I find it very unfair that on neither of my flights I was able to use the overhead for my small backpack because they were completely rammed with luggage, people personal items, jackets, hats and other items. So the only item I brought in had to be stuffed under my seat while they had their leg room and sat comfortable with all of their items in the overhead. This has to stop because I was uncomfortable on both flights when I only had one smaller item that could not be checked due to its contents (medication etc). Plenty of people could have checked theirs but chose not to and then took up the space allotment for 2 people.
A
8.0 Very good
Great
A
10.0 Wonderful
Flight left on time and we arrived 25 minutes early! There was a gate available when we arrived so early on a busy Sunday afternoon! Flight attendants came around twice with the drinks cart.
D
10.0 Wonderful
Wonderful. Quick boarding. Early departure and we arrived 30 minutes early at our destination. Unfortunately, when you arrive early, there is still a departing aircraft at our gate. We had to park for 30 minutes until the gate was clear. So our early arrival was not really early at the gate. Otherwise it was a quick and smooth flight. Appreciated the efficiency.
Read more about United Airlines

Everything you need to know for your flight to San Diego

Other airlines flying to San Diego

Flight deals from the most popular airlines with KAYAK users flying the route
Frontier flights to San Diego
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Southwest flights to San Diego
Delta flights to San Diego