United Airlines Denver to San Diego Flights

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Cheapflightsplus.com will find cheap United Airlines flights from Denver to San Diego. Compare airline ticket prices and book air tickets starting from $83 from trusted online travel agencies, web sites and directly from airlines. Check flights schedule of United Airlines, arrivals and departure details below.

Find Cheap Airfare Denver (CO) — San Diego (CA) by United Airlines

To find cheap tickets choose a day of your departure with attractive price on the graph below and click «Find flights». For round trip flights please click «Check prices for return flight». The cheapest airfare is in july: one-way - $83, two-way – $142.

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Cheap Flights from Denver to San Diego by United Airlines

Look at the list of plane tickets for the most popular direct and connecting flights by United Airlines, their prices start from $83. The fastest nonstop flight takes 2h 21m. The fastest connecting flight — 4h 25m.

Price	Departure	Arrival	Flight Time	Airline	Flight
from $83 Find flight	7:45 am Denver Denver International	9:09 am San Diego San Diego	2h 24m	United Airlines	UA2309
from $83 Find flight	8:50 pm Denver Denver International	10:14 pm San Diego San Diego	2h 24m	United Airlines	UA1835
from $84 Find flight	7:14 pm Denver Denver International	8:38 pm San Diego San Diego	2h 24m	United Airlines	UA540
from $91 Find flight	4:03 pm Denver Denver International	5:24 pm San Diego San Diego	2h 21m	United Airlines	UA1281
from $93 Find flight	1:38 pm Denver Denver International	2:59 pm San Diego San Diego	2h 21m	United Airlines	UA1302
from $93 Find flight	11:33 am Denver Denver International	12:57 pm San Diego San Diego	2h 24m	United Airlines	UA1940
from $100 Find flight	11:28 am Denver Denver International	12:52 pm San Diego San Diego	2h 24m	United Airlines	UA583
from $116 Find flight	11:28 am Denver Denver International	12:52 pm San Diego San Diego	2h 24m	United Airlines	UA2412
from $94 Find flight	8:00 pm Denver Denver International	11:36 pm San Diego San Diego	4h 36m layover 1h 6m - Los Angeles	United Airlines	UA1368 UA5612
from $94 Find flight	11:40 am Denver Denver International	4:30 pm San Diego San Diego	5h 50m layover 1h 30m - San Francisco	United Airlines	UA1561 UA1142
from $94 Find flight	6:08 am Denver Denver International	12:52 pm San Diego San Diego	7h 44m layover 3h 20m - San Francisco	United Airlines	UA2367 UA682
from $94 Find flight	8:02 am Denver Denver International	12:52 pm San Diego San Diego	5h 50m layover 1h 26m - San Francisco	United Airlines	UA2391 UA682
from $94 Find flight	4:00 pm Denver Denver International	10:28 pm San Diego San Diego	7h 28m layover 3h 10m - San Francisco	United Airlines	UA2633 UA1074
from $94 Find flight	1:30 pm Denver Denver International	6:23 pm San Diego San Diego	5h 53m layover 1h 33m - San Francisco	United Airlines	UA1812 UA1434
from $123 Find flight	8:00 pm Denver Denver International	0:15 am+1 день San Diego San Diego	5h 15m layover 0h 49m - San Francisco	United Airlines	UA1412 UA2861
from $172 Find flight	8:02 am Denver Denver International	8:50 pm San Diego San Diego	13h 48m layover 9h 25m - San Francisco	United Airlines	UA2410 UA2633

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*Departure and arrival times are local. Prices are for one-way flights. Information refreshed on 06/23/2025

United Airlines Flight Schedule Denver to San Diego

Below is a detailed 2025 flight schedule for today, tomorrow and all other days. It may vary depending on season and a day of the week of your desired trip. We recommend booking your itinerary at least 2 weeks prior your travel to get the best price and availability by the airline.

Departure	Flight Details	Flight Time	Price
11:28 am — 12:52 pm	11:28 am — 12:52 pm UA583 United Airlines Denver — San Diego	2h 24m	Find flight from$100
11:28 am — 12:52 pm	11:28 am — 12:52 pm UA2412 United Airlines Denver — San Diego	2h 24m	Find flight from$116
11:33 am — 12:57 pm	11:33 am — 12:57 pm UA1940 United Airlines Denver — San Diego	2h 24m	Find flight from$93
1:38 pm — 2:59 pm	1:38 pm — 2:59 pm UA1302 United Airlines Denver — San Diego	2h 21m	Find flight from$93
4:03 pm — 5:24 pm	4:03 pm — 5:24 pm UA1281 United Airlines Denver — San Diego	2h 21m	Find flight from$91
7:14 pm — 8:38 pm	7:14 pm — 8:38 pm UA540 United Airlines Denver — San Diego	2h 24m	Find flight from$84
7:45 am — 9:09 am	7:45 am — 9:09 am UA2309 United Airlines Denver — San Diego	2h 24m	Find flight from$83
8:50 pm — 10:14 pm	8:50 pm — 10:14 pm UA1835 United Airlines Denver — San Diego	2h 24m	Find flight from$83
10:09 am — 3:08 pm	10:09 am — 11:51 am UA1572 United Airlines Denver — San Francisco 1h 39m stop 1:30 pm — 3:08 pm UA1106 United Airlines San Francisco — San Diego	5h 59m including layover	Find flight from$96
10:15 am — 1:40 pm	10:15 am — 11:45 am UA405 United Airlines Denver — Los Angeles 56m stop 12:41 pm — 1:40 pm UA5216 United Airlines Los Angeles — San Diego	4h 25m including layover	Find flight from$96
11:40 am — 4:30 pm	11:40 am — 1:22 pm UA1561 United Airlines Denver — San Francisco 1h 30m stop 2:52 pm — 4:30 pm UA1142 United Airlines San Francisco — San Diego	5h 50m including layover	Find flight from$94
1:30 pm — 6:23 pm	1:26 pm — 3:10 pm UA1812 United Airlines Denver — San Francisco 1h 33m stop 4:45 pm — 6:25 pm UA1434 United Airlines San Francisco — San Diego	5h 53m including layover	Find flight from$94
3:40 pm — 8:16 pm	4:00 pm — 5:50 pm UA2633 United Airlines Denver — San Francisco 1h 31m stop 6:55 pm — 8:36 pm UA2633 United Airlines San Francisco — San Diego	5h 36m including layover	Find flight from$129
3:42 pm — 8:48 pm	3:42 pm — 5:23 pm UA2633 United Airlines Denver — San Francisco 1h 47m stop 7:10 pm — 8:48 pm UA1812 United Airlines San Francisco — San Diego	6h 6m including layover	Find flight from$96
4:00 pm — 10:28 pm	4:00 pm — 5:43 pm UA2633 United Airlines Denver — San Francisco 3h 10m stop 9:08 pm — 10:42 pm UA1074 United Airlines San Francisco — San Diego	7h 28m including layover	Find flight from$94
5:55 pm — 11:36 pm	5:40 pm — 7:14 pm UA2240 United Airlines Denver — Los Angeles 3h 8m stop 10:55 pm — 11:58 pm UA5612 United Airlines Los Angeles — San Diego	6h 41m including layover	Find flight from$94
5:59 pm — 10:28 pm	5:59 pm — 7:45 pm UA1007 United Airlines Denver — San Francisco 1h 8m stop 9:08 pm — 10:42 pm UA1074 United Airlines San Francisco — San Diego	5h 29m including layover	Find flight from$99
6:08 am — 12:52 pm	6:08 am — 7:50 am UA2367 United Airlines Denver — San Francisco 3h 20m stop 11:10 am — 12:52 pm UA682 United Airlines San Francisco — San Diego	7h 44m including layover	Find flight from$94
6:08 am — 10:13 am	5:00 am — 6:42 am UA2367 United Airlines Denver — San Francisco 43m stop 8:44 am — 10:27 am UA1483 United Airlines San Francisco — San Diego	5h 5m including layover	Find flight from$99
8:00 pm — 11:36 pm	7:25 pm — 8:58 pm UA1368 United Airlines Denver — Los Angeles 1h 6m stop 10:40 pm — 11:41 pm UA5612 United Airlines Los Angeles — San Diego	4h 36m including layover	Find flight from$94
9:24 pm — 8:38 am +1 day	9:24 pm — 11:09 pm UA746 United Airlines Denver — San Francisco 7h 50m stop 7:00 am — 8:38 am UA1712 United Airlines San Francisco — San Diego	12h 14m including layover	Find flight from$181
9:42 am — 4:30 pm	9:42 am — 11:24 am UA2041 United Airlines Denver — San Francisco 3h 28m stop 2:52 pm — 4:30 pm UA1142 United Airlines San Francisco — San Diego	7h 48m including layover	Find flight from$104

Departure	Arrival	Flight Details	Flight Time	Price
		stop stop	including layover	Find flight from$

*Departure and arrival times are local. Last updated on 06/23/2025

Flight Information

There are 8 flights by United Airlines from Denver to San Diego every week with departures from Denver International and Arapahoe Co. All flights arrive at San Diego, AFB, Golden Triangle Reg., Lowndes County, San Diego Regional, El Cajon, Montgomery Field, Miramar NAS, North Island NAS, Brown Field Municipal, Gillespie Field.

Departures start from 10:07 am to 9:42 am. Nonstop flight is 2h 21m. The time difference between Denver and San Diego is 1h.

The fastest flight 2h 21m
Average flight time 2h 24m
The earliest flight 10:07 am
The latest flight 9:42 am
Distance 852 ml

The cheapest months for traveling to San Diego are june (from 70 $), september (from 111 $), august (from 112 $).

The most expensive and popular months are february (from 218 $), november (from 196 $), may (from 178 $).

The cheapest flight by United Airlines that our users were able to find is $83. This airfare is economy class on one-way UA2309 flight for September 27, 2025 leaving Denver International in Denver at 7:45 am, it includes all taxes and additional fees.

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United Airlines Airplanes on the Route

List of the most popular United Airlines airplanes flying from Denver to San Diego:

Boeing 737-900

from $84

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Other Popular Airlines on the Route

Besides United Airlines there are other 6 airline carriers between Denver and San Diego. Please review schedules and prices from the most popular airlines to find the best airfare deals from Denver to San Diego.

Nonstop flights

There are 18 direct flights every day from Denver. Airlines and fares are below:

F9 - Frontier Airlines

from $27

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AS - Alaska Airlines

from $63

Find
HA - Hawaiian Airlines

from $60

Find

See more direct flights

Connecting Flights

List of flights with layovers (1 and more stops):

F9 - Frontier Airlines

from $63

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AS - Alaska Airlines

from $88

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SY - Sun Country Airlines

from $122

Find
HA - Hawaiian Airlines

from $81

Find
MX - Mexicana

from $414

Find
G4 - Allegiant Air

from $138

Find

See more connecting flights

How to book an air ticket yourself?

Fill in the search parameters — cities of departure and destination, departure and return dates and click «Find flights»
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That's it — you will receive an email with your e-ticket usually within 10 minutes after your flight is confirmed. Please, print the e-ticket and have it with you at the airport. You would need to have only a passport and/or a required form of ID to travel. Please, check your Visa requirements if you travel outside of the United States or Canada.
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