Cheap flights from San Diego to Denver from £33
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How much do flights to Denver cost?
Getting from Denver's airport to the city center
Fastest options: RTD A Line train and taxi/ride-hailing. Best value: RTD A Line and regional bus services.
Transport Option | Typical Time | Typical Cost | Frequency | Best For |
|---|---|---|---|---|
37 min | $10.50; one-way fare | every 15 min (traffic dependent) | downtown on a budget | |
50-70 min | $10.50; one-way fare | every 30–60 min (traffic dependent) | Boulder and suburban areas | |
30-50 min | $55 – $70; metered; varies by traffic and destination | on-demand 24/7 (traffic dependent) | door-to-door convenience | |
30-50 min | $40 – $70; surge pricing may apply | on-demand 24/7 (traffic dependent) | flexible pickup locations | |
30-50 min | $70 – $120; pre-booked; varies by provider | by reservation (traffic dependent) | groups and guaranteed pickup | |
30-50 min | $40 – $100; per day; varies by vehicle and provider | on-demand (traffic dependent) | exploring Colorado independently |
Notes:
- Prices in USD; table created in 2025 and subject to change.
- The RTD A Line operates from approximately 4:00 AM to 1:00 AM daily, with reduced frequency during late night hours.
- Ride-hailing pickup is located on Level 5, Island 5 of the Jeppesen Terminal.
- Taxi and ride-hailing costs can increase significantly during peak hours and adverse weather conditions.
- We recommend checking official transport websites for your travel planning.
Updated: December 2025
Key info about flying to Denver
Weekly direct flights
Discover the top airlines offering direct flights from San Diego to Denver in the next month. You’ll find the number of daily direct flights per airline in the chart.
| Airline | Mon 17.08 | Tue 18.08 | Wed 19.08 | Thu 20.08 | Fri 21.08 | Sat 22.08 | Sun 23.08 |
|---|---|---|---|---|---|---|---|
| 5 | 5 | 6 | 6 | 5 | 4 | 4 | |
| 3 | 3 | 3 | 3 | 2 | 3 | 2 | |
| 2 | 2 | 2 | 2 | 2 | 2 | 1 | |
| --- | --- | --- | --- | --- | --- | --- | |
| Weekly flights: 67 total | Daily flights: 9.57 average | Most flights: Wednesday 6 flights |
| Airline | Mon 24.08 | Tue 25.08 | Wed 26.08 | Thu 27.08 | Fri 28.08 | Sat 29.08 | Sun 30.08 |
|---|---|---|---|---|---|---|---|
| 5 | 6 | 7 | 6 | 6 | 6 | 3 | |
| 3 | 3 | 3 | 3 | 3 | 3 | 3 | |
| 2 | 2 | 2 | 2 | 2 | 2 | 2 | |
| --- | --- | --- | --- | --- | --- | --- | |
| Weekly flights: 74 total | Daily flights: 10.57 average | Most flights: Wednesday 7 flights |
| Airline | Mon 31.08 | Tue 01.09 | Wed 02.09 | Thu 03.09 | Fri 04.09 | Sat 05.09 | Sun 06.09 |
|---|---|---|---|---|---|---|---|
| 5 | 5 | 6 | 5 | 5 | 5 | 4 | |
| 3 | 3 | 3 | 1 | 1 | 3 | 3 | |
| 2 | 2 | 2 | 2 | 2 | 2 | 2 | |
| --- | --- | --- | --- | --- | --- | --- | |
| Weekly flights: 66 total | Daily flights: 9.43 average | Most flights: Wednesday 6 flights |
| Airline | Mon 07.09 | Tue 08.09 | Wed 09.09 | Thu 10.09 | Fri 11.09 | Sat 12.09 | Sun 13.09 |
|---|---|---|---|---|---|---|---|
| 1 | 5 | 6 | --- | --- | --- | --- | |
| 1 | 3 | 3 | --- | --- | --- | --- | |
| 1 | 2 | 2 | --- | --- | --- | --- | |
| --- | --- | --- | --- | --- | --- | --- | |
| Weekly flights: 24 total | Daily flights: 8 average | Most flights: Wednesday 6 flights |
Check-in for a flight from San Diego to Denver
| Name | Carrier code | IATA Code | Passport needed during booking |
|---|---|---|---|
| United Airlines | UAL | UA | No |
| Frontier Airlines | FFT | F9 | No |
| Alaska Airlines | ASA | AS | No |
| Sun Country Airlines | SCX | SY | Yes |
| Volaris | VOI | Y4 | No |
Online check-in is not available for these airlines.
Weather in Denver
Average Weather
| Month | Average monthly max temperature | Average monthly min temperature |
| January | 4°C | -6°C |
| February | 5°C | -6°C |
| March | 10°C | -1°C |
| April | 14°C | 1°C |
| May | 18°C | 6°C |
| June | 26°C | 13°C |
| July | 29°C | 16°C |
| August | 28°C | 15°C |
| September | 25°C | 12°C |
| October | 17°C | 4°C |
| November | 10°C | -1°C |
| December | 5°C | -5°C |
14 day forecast
Denver travel tips
Avoid the Highlands and the Cap Hill when riding a bike in Denver
Despite the location near mountains, Denver is pretty flat to ride a bike. The only two areas that may give bikers problems are the Highlands and the Cap Hill, with their steep slopes and hills. But generally, you can ride a bike around the city without worrying about a 30-degree incline.
Rent a bike in Denver and ride around Sloan Lake
Rent a bike with a bike-share program, B Cycle, in Denver. A perfect place to start your ride is Sloan Lake with its big surrounding area.
When walking in Denver keep your ice to the 7-meters-high dairy jug
When you see the 7-meters-high dairy jug in Denver, just know it is Little Man Ice Cream cafe. They sell cones of handcrafted ice cream, including vegan options. A classic Chunky Chocolate cone is a must.
Frequently asked questions
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