United Airlines San Diego to Denver Flights

Return flight: Denver – San Diego

Cheapflightsplus.com will find cheap United Airlines flights from San Diego to Denver. Compare airline ticket prices and book air tickets starting from $82 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 San Diego (CA) — Denver (CO) 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 june: one-way - $82, two-way – $141.
Direct flights
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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 Arrival Flight Details Flight Time Price
11:17 am — 2:45 pm
11:17 am — 2:45 pm UA1337 United Airlines
San Diego — Denver
2h 28m
Find flight
from$90
12:45 pm — 4:13 pm
12:45 pm — 4:13 pm UA1220 United Airlines
San Diego — Denver
2h 28m
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from$103
12:52 pm — 4:20 pm
12:52 pm — 4:20 pm UA1483 United Airlines
San Diego — Denver
2h 28m
Find flight
from$90
4:14 pm — 7:40 pm
4:14 pm — 7:40 pm UA682 United Airlines
San Diego — Denver
2h 26m
Find flight
from$120
6:32 pm — 10:00 pm
6:32 pm — 10:00 pm UA519 United Airlines
San Diego — Denver
2h 28m
Find flight
from$82
6:45 am — 10:13 am
6:45 am — 10:13 am UA2270 United Airlines
San Diego — Denver
2h 28m
Find flight
from$82
8:40 am — 12:04 pm
8:40 am — 12:04 pm UA1829 United Airlines
San Diego — Denver
2h 24m
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from$120
8:45 am — 12:13 pm
8:45 am — 12:13 pm UA347 United Airlines
San Diego — Denver
2h 28m
Find flight
from$106
9:02 am — 12:30 pm
9:02 am — 12:30 pm UA2476 United Airlines
San Diego — Denver
2h 28m
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from$82
10:38 am — 6:14 pm
10:38 am — 12:20 pm UA2855 United Airlines
San Diego — San Francisco
2h 14m stop
2:34 pm — 6:14 pm UA1596 United Airlines
San Francisco — Denver
6h 36m
including layover
Find flight
from$93
10:54 am — 4:09 pm
10:54 am — 12:05 pm UA5249 United Airlines
San Diego — Los Angeles
38m stop
12:57 pm — 4:25 pm UA311 United Airlines
Los Angeles — Denver
4h 15m
including layover
Find flight
from$120
11:08 am — 6:06 pm
11:08 am — 12:20 pm UA5249 United Airlines
San Diego — Los Angeles
2h 19m stop
2:39 pm — 6:06 pm UA2859 United Airlines
Los Angeles — Denver
5h 58m
including layover
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from$93
1:58 pm — 8:08 pm
1:58 pm — 3:35 pm UA1763 United Airlines
San Diego — San Francisco
53m stop
4:28 pm — 8:08 pm UA2464 United Airlines
San Francisco — Denver
5h 10m
including layover
Find flight
from$93
1:58 pm — 10:17 pm
1:58 pm — 3:35 pm UA1763 United Airlines
San Diego — San Francisco
3h 5m stop
6:42 pm — 10:18 pm UA1745 United Airlines
San Francisco — Denver
7h 19m
including layover
Find flight
from$101
2:21 pm — 8:47 pm
2:21 pm — 3:35 pm UA5647 United Airlines
San Diego — Los Angeles
1h 45m stop
5:20 pm — 8:47 pm UA2267 United Airlines
Los Angeles — Denver
5h 26m
including layover
Find flight
from$120
2:21 pm — 7:40 pm
2:21 pm — 3:35 pm UA5647 United Airlines
San Diego — Los Angeles
38m stop
4:13 pm — 7:40 pm UA2146 United Airlines
Los Angeles — Denver
4h 19m
including layover
Find flight
from$120
3:25 pm — 11:38 pm
3:25 pm — 8:45 pm UA1179 United Airlines
San Diego — Houston
1h 12m stop
10:05 pm — 11:46 pm UA1338 United Airlines
Houston — Denver
7h 13m
including layover
Find flight
from$207
4:11 pm — 10:17 pm
4:11 pm — 5:48 pm UA2117 United Airlines
San Diego — San Francisco
52m stop
6:42 pm — 10:18 pm UA1745 United Airlines
San Francisco — Denver
5h 6m
including layover
Find flight
from$93
4:11 pm — 0:28 am
+1 day
4:11 pm — 5:48 pm UA2117 United Airlines
San Diego — San Francisco
3h 4m stop
8:52 pm — 0:28 am UA1871 United Airlines
San Francisco — Denver
7h 17m
including layover
Find flight
from$102
5:50 pm — 0:48 am
+1 day
5:50 pm — 7:28 pm UA1871 United Airlines
San Diego — San Francisco
1h 47m stop
9:15 pm — 0:48 am UA1317 United Airlines
San Francisco — Denver
5h 58m
including layover
Find flight
from$122
5:56 pm — 0:28 am
+1 day
5:56 pm — 7:35 pm UA1871 United Airlines
San Diego — San Francisco
1h 17m stop
8:52 pm — 0:28 am UA1871 United Airlines
San Francisco — Denver
5h 32m
including layover
Find flight
from$116
7:27 pm — 8:36 am
+1 day
7:27 pm — 9:05 pm UA505 United Airlines
San Diego — San Francisco
7h 55m stop
5:00 am — 8:36 am UA2420 United Airlines
San Francisco — Denver
12h 9m
including layover
Find flight
from$180
7:35 pm — 8:41 am
+1 day
7:27 pm — 9:05 pm UA2683 United Airlines
San Diego — San Francisco
7h 52m stop
5:05 am — 8:41 am UA2420 United Airlines
San Francisco — Denver
12h 6m
including layover
Find flight
from$244
8:00 am — 2:56 pm
8:00 am — 9:42 am UA2863 United Airlines
San Diego — San Francisco
1h 34m stop
11:16 am — 2:56 pm UA2076 United Airlines
San Francisco — Denver
5h 56m
including layover
Find flight
from$93
9:45 am — 6:13 pm
9:45 am — 11:23 am UA305 United Airlines
San Diego — San Francisco
3h 7m stop
2:30 pm — 6:13 pm UA2142 United Airlines
San Francisco — Denver
7h 28m
including layover
Find flight
from$121
*Departure and arrival times are local. Last updated on 06/03/2025

Flight Information

There are 9 flights by United Airlines from San Diego to Denver every week with departures from 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. All flights arrive at Denver International and Arapahoe Co.

Departures start from 10:00 pm to 9:45 am. Nonstop flight is 2h 24m. The time difference between San Diego and Denver is 1h.

  • The fastest flight 2h 24m
  • Average flight time 2h 28m
  • The earliest flight 10:00 pm
  • The latest flight 9:45 am
  • Distance 852 ml

The cheapest months for traveling to Denver are september (from 110 $), october (from 113 $), august (from 115 $).

The most expensive and popular months are may (from 171 $), february (from 170 $), june (from 154 $).

The cheapest flight by United Airlines that our users were able to find is $82. This airfare is economy class on one-way UA2270 flight for September 27, 2025 leaving San Diego in San Diego at 6:45 am, it includes all taxes and additional fees.

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Other Popular Airlines on the Route

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

Nonstop flights

There are 16 direct flights every day from San Diego. Airlines and fares are below:

  • from $38
    Find
  • 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):

  • from $51
    Find
  • AS - Alaska Airlines
    from $102
    Find
  • SY - Sun Country Airlines
    from $120
    Find
  • HA - Hawaiian Airlines
    from $96
    Find
  • MX - Mexicana
    from $212
    Find
  • NK - Spirit Airlines
    from $70
    Find
See more connecting flights

How to book an air ticket yourself?

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»
  • Select the best flight that you like. Please, check the airports of departure and arrival. Select the best fare, but pay attention to the following flight details - airports of departure and arrival, flight duration and layovers. Please use filters and sort to find the best flight.
  • Click «Buy» when you are ready — our system will redirect you to the site that sells the selected airfare.
  • Fill in all passenger and payment information — passport and contact information, please double check all passengers’ names and make a payment for your itinerary.
  • 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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