Cheap flights from St. Louis to Denver from £35
Trusted by millions
Kiwi.com Guarantee for stress-free travel
One search, all the best deals
Explore flight deals to Denver
Not happy with the results? Try some of our useful filters
Search by stops
Search by price
Search by departure date
Not happy with the results? Try some of our useful filters
Search by stops
Search by price
Search by departure date
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 St. Louis to Denver in the next month. You’ll find the number of daily direct flights per airline in the chart.
| Airline | Mon 09.02 | Tue 10.02 | Wed 11.02 | Thu 12.02 | Fri 13.02 | Sat 14.02 | Sun 15.02 |
|---|---|---|---|---|---|---|---|
| 2 | 2 | 1 | 1 | 3 | 2 | 2 | |
| 1 | --- | 1 | --- | 1 | 1 | --- | |
| Weekly flights: 17 total | Daily flights: 2.43 average | Most flights: Friday 3 flights |
| Airline | Mon 16.02 | Tue 17.02 | Wed 18.02 | Thu 19.02 | Fri 20.02 | Sat 21.02 | Sun 22.02 |
|---|---|---|---|---|---|---|---|
| 2 | 2 | 3 | 3 | 3 | 2 | 3 | |
| 1 | --- | 1 | --- | 1 | 1 | --- | |
| Weekly flights: 22 total | Daily flights: 3.14 average | Most flights: Wednesday 3 flights |
| Airline | Mon 23.02 | Tue 24.02 | Wed 25.02 | Thu 26.02 | Fri 27.02 | Sat 28.02 | Sun 01.03 |
|---|---|---|---|---|---|---|---|
| 2 | 1 | 3 | 3 | 2 | 2 | 3 | |
| 1 | --- | 1 | --- | 1 | 1 | --- | |
| Weekly flights: 20 total | Daily flights: 2.86 average | Most flights: Wednesday 3 flights |
| Airline | Mon 02.03 | Tue 03.03 | Wed 04.03 | Thu 05.03 | Fri 06.03 | Sat 07.03 | Sun 08.03 |
|---|---|---|---|---|---|---|---|
| 2 | 2 | 3 | 3 | 4 | 3 | 4 | |
| 1 | --- | 1 | --- | 1 | 1 | --- | |
| Weekly flights: 25 total | Daily flights: 3.57 average | Most flights: Friday 4 flights |
Check-in for a flight from St. Louis to Denver
| Name | Carrier code | IATA Code | Passport needed during booking |
|---|---|---|---|
| Frontier Airlines | FFT | F9 | No |
| United Airlines | UAL | UA | No |
| Hawaiian Airlines | HAL | HA | No |
| Alaska Airlines | ASA | AS | No |
| Spirit Airlines | NKS | NK | 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 | 4°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
Follow the steps of the Beatles in Denver
When going to a concert at the Red Rocks Park and Amphitheatre or just passing this great building by on the street try to imagine yourself in the 60s. This is where the Beatles gathered their crazy dedicated fans.
Eat some hand-made food at Denver Central Market
Denver Central Market on 2669 Larimer Street is mainly famous for its hand-made food. Sample a bowl of handmade pasta or an artisanal sandwich. A wood-fired pizza is also a nice option. And good shopping is guaranteed, of course.
Going picnicking in Denver or just shopping at Cooks Fresh Market, try their sandwiches
Located on 1600 Glenarm Plaza in Denver, Cooks Fresh Market is a great option for gourmets. After shopping or passing by on your way to a picnic, pay a visit to this deli to grab a sandwich or two.
Frequently asked questions
Planning a trip? Thanks to our Virtual Interlining algorithm, we offer billions of route combinations between any origin and destination in the world by plane. Find the cheapest routes and best deals, as well as the best dates to travel.
Explore alternative trips
Flights from St. Louis
Flights to Denver
Popular routes
Airports near St. Louis
Airports near Denver
Download our app