Cheap flights from Seattle to Denver from £89
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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 | one-way fare | every 15 min (traffic dependent) | downtown on a budget | |
50-70 min | one-way fare | every 30–60 min (traffic dependent) | Boulder and suburban areas | |
30-50 min | metered; varies by traffic and destination | on-demand 24/7 (traffic dependent) | door-to-door convenience | |
30-50 min | surge pricing may apply | on-demand 24/7 (traffic dependent) | flexible pickup locations | |
30-50 min | pre-booked; varies by provider | by reservation (traffic dependent) | groups and guaranteed pickup | |
30-50 min | 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 Seattle to Denver in the next month. You’ll find the number of daily direct flights per airline in the chart.
| Airline | Mon 11.05 | Tue 12.05 | Wed 13.05 | Thu 14.05 | Fri 15.05 | Sat 16.05 | Sun 17.05 |
|---|---|---|---|---|---|---|---|
| 5 | 4 | 5 | 1 | 2 | 4 | 4 | |
| 3 | 4 | 3 | 1 | 2 | 5 | 3 | |
| 1 | 1 | 1 | 1 | 1 | 1 | 1 | |
| Weekly flights: 53 total | Daily flights: 7.57 average | Most flights: Monday 5 flights |
| Airline | Mon 18.05 | Tue 19.05 | Wed 20.05 | Thu 21.05 | Fri 22.05 | Sat 23.05 | Sun 24.05 |
|---|---|---|---|---|---|---|---|
| 5 | 4 | 5 | 3 | 2 | 3 | 6 | |
| 3 | 5 | 4 | 2 | 2 | 5 | 5 | |
| 1 | 1 | 1 | 2 | 2 | 1 | 2 | |
| Weekly flights: 64 total | Daily flights: 9.14 average | Most flights: Sunday 6 flights |
| Airline | Mon 25.05 | Tue 26.05 | Wed 27.05 | Thu 28.05 | Fri 29.05 | Sat 30.05 | Sun 31.05 |
|---|---|---|---|---|---|---|---|
| 4 | 6 | 7 | 7 | 7 | 3 | 5 | |
| 4 | 4 | 5 | 5 | 4 | 5 | 4 | |
| 2 | 1 | 1 | 2 | 2 | 1 | 2 | |
| Weekly flights: 81 total | Daily flights: 11.57 average | Most flights: Wednesday 7 flights |
| Airline | Mon 01.06 | Tue 02.06 | Wed 03.06 | Thu 04.06 | Fri 05.06 | Sat 06.06 | Sun 07.06 |
|---|---|---|---|---|---|---|---|
| 7 | 6 | 7 | 7 | 6 | 1 | 2 | |
| 5 | 5 | 5 | 5 | 4 | 3 | 2 | |
| 2 | 1 | 1 | 2 | 2 | 1 | 2 | |
| Weekly flights: 76 total | Daily flights: 10.86 average | Most flights: Monday 7 flights |
Check-in for a flight from Seattle to Denver
| Name | Carrier code | IATA Code | Passport needed during booking |
|---|---|---|---|
| Frontier Airlines | FFT | F9 | No |
| Alaska Airlines | ASA | AS | No |
| WestJet | WJA | WS | No |
| Air Excursions | X4 | No | |
| Harbour Air (Priv) | HES | YB | 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
Buy a Citypass in Denver to save some money
For those who plan to see a lot of Denver, purchasing a City Pass is the best option. This card will give free entry into many museums and other sights, as well as special rates for public transport (35 percent less than simple retes).
Sport fans must attend a baseball match in Denver
Denver is an incredibly sporty city. All sports fans flock to various stadiums to watch a Colorado Rockies, Avalanche or Nuggets game before you leave the city. Choosing a venue remember that the large Stadium Arena at National Western Complex will give you the most unforgettable emotions.
Do not hesitate to ask if ice skating is free in winter in Denver
Locals of Denver adore ice skating in winter. Lots of local businesses set up ice skating areas for pedestrians. Anytime you see a rink, feel free to ask if the admission fee is needed, because pretty often it is not.
Frequently asked questions
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