The cheapest flights to Denver Intl. found within the past 7 days were $113 round trip and $64 one way. Prices and availability subject to change. Additional terms may apply.
Be sure to check out our Covid-19 Travel Advisor to find out if there are any current travel advice reports and quarantine requirements in place in Denver, CO (DEN-Denver Intl.) when flying in from San Diego, CA (SAN-San Diego Intl.).
What terminal is United Airlines at SAN?If you're booked with United Airlines from San Diego, CA (SAN-San Diego Intl.) to Denver Airport, you should be able to find out the terminal information when you get your boarding pass. If not, check with your airline.
Are there United Airlines non-stop flights from SAN to DEN?As you can't fly nonstop from San Diego, CA (SAN-San Diego Intl.) to Denver, CO (DEN-Denver Intl.) with United Airlines, make the most of your layover. Order one of your favorite drinks at a comfortable airport bar, or wander about the terminal and enjoy some retail therapy.
If I am not able to travel due to COVID-19, can I change my booking to a later date?For more info about changing your flight to Denver Intl. Airport (DEN), please visit our Customer Service Portal.
Which airlines offer COVID-19 measures and exercise social distancing rules?United Airlines, Southwest Airlines and Frontier Airlines are just some of the many carriers that employ COVID-19 measures and use social distancing rules on their flights. Some of their strategies are cleaning with disinfectant and providing passenger masks.
What is the best day to buy a plane ticket?This just in! Airfares offered on Thursdays tend to be the cheapest, according to flight demand on Travelocity in 2020. Wednesday and Friday prices are also good, but you may want to prepare your budget if booking on a Sunday, as data shows the end of the week is when prices are generally at their highest.
What are the cheapest days to fly?Frequent travelers may already know this, but earlier in the week can be the cheapest time to fly. In 2020, flights departing on a Monday were generally the cheapest of the week, whereas you may pay a premium for weekend flights when demand is usually high. On average, tickets were most expensive for Saturday departures, so if you need to fly out on a weekend, you might look for deals ahead of time.
How far in advance can you book a flight?Trying to figure out how early you should book your flight? It's possible to start comparing international airfares on Travelocity up to 12 months in advance. However, it does depend on the carrier as not all airlines release their prices that far out. According to our 2020 flight demand trends, last minute planners can still bag a bargain with some of the cheapest fares appearing 2 weeks to 2 months prior to their travel dates.
How can I save money on airline tickets?We'll let you in on a secret...You can save big on flights if you mix and match your airlines and fare types. In fact, travelers who booked flights on Travelocity in 2020 saved nearly 40% when their return flights consisted of two different airlines or fare types.
*According to flight demand on Travelocity.com from January to December 2020. Savings are subject to change based on departure location, date and destination.
| Carrier | Flight | Depart SAN | Arrive DEN | Wed 12/1 | Thu 12/2 | Fri 12/3 | Sat 12/4 | Sun 12/5 | Mon 12/6 | Tue 12/7 | Stops | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| UA1985 | 06:45 am | 10:07 am | Check Fare | Check Fare | Check Fare | Check Fare | Check Fare | Check Fare | Check Fare | 0 Stops | |
| UA2364 | 09:00 am | 00:22 pm | Check Fare | Check Fare | Check Fare | Check Fare | Check Fare | Check Fare | Check Fare | 0 Stops | |
| UA264 | 11:20 am | 02:42 pm | Check Fare | Check Fare | Check Fare | Check Fare | Check Fare | Check Fare | Check Fare | 0 Stops | |
| UA2396 | 00:45 pm | 04:08 pm | Check Fare | Check Fare | Check Fare | - | - | - | - | 0 Stops | |
| UA2299 | 04:00 pm | 07:20 pm | Check Fare | Check Fare | Check Fare | Check Fare | Check Fare | Check Fare | Check Fare | 0 Stops | |
| UA1665 | 00:45 pm | 04:08 pm | - | - | - | Check Fare | Check Fare | Check Fare | Check Fare | 0 Stops | |
To find the best deals on flights to San Diego from Denver with United, just enter your travel dates, filter by United, and hit search. You’ll find 5 flights to choose from and can sort by price, flight duration, and arrival or departure time.
If you’re planning a round trip, booking return flights with United is usually the most cost-effective option. With airfares ranging from $113 to $159, it’s easy to find a flight that suits your budget. Prices and availability subject to change. Additional terms may apply.
A one-way ticket gives you much greater flexibility—allowing you to choose your return date, destination, and time whenever you’re ready. By booking in advance you can find great deals on one-way tickets too. Right now, a one-way United flight from San Diego to Denver costs from $64. Prices and availability subject to change. Additional terms may apply.
To find a cheap United flight from San Diego SAN to Denver DEN, sort your search results by price or filter by budget. Thanks to Travelocity’s Price Match Promise, if you find a better airfare deal anywhere else within 24 hours, we’ll credit or refund the difference.
If you’re looking for cheap flights, it helps to be flexible when it comes to your travel dates. You’ll usually find lower cost tickets when you travel during quieter months such as February, or if you book a flight with a stopover.
If you’re keen to be on Denver soil fast, don’t waste time with a stopover—filter your search results to show direct United flights only. The journey takes around 2 hour(s) 20 min(s) – so you’ll be there before you know it.
Make sure you’re not out of pocket if plans change by choosing a flexible ticket with penalty-free amendment and cancellation options. Use our ‘no change fee’ filter to see which flights have this option.
At Travelocity our vast and up-to-the-minute inventory puts all of our best flight deals in one place. So, whether you’re traveling on business or jetting off with friends and family, you can trust Travelocity to get you there.
Airport Code | Country | Airport Name | Number of Flights |
|---|---|---|---|
| ORD | USA | O'Hare Intl. | 227 |
| DEN | USA | Denver Intl. | 226 |
| IAH | USA | George Bush Intercontinental | 136 |
| IAD | USA | Washington Dulles Intl. | 100 |
| SFO | USA | San Francisco Intl. | 64 |
| LAX | USA | Los Angeles Intl. | 23 |
| EWR | USA | Liberty Intl. | 20 |
| FRA | DEU | Frankfurt Intl. | 19 |
| NRT | JPN | Narita Intl. | 19 |
| PEK | CHN | Capital Intl. | 16 |
Reviewed on Nov 8, 2021
Reviewed on Sep 27, 2021
Reviewed on Nov 26, 2021