San Diego, CA to Denver, CO flights from £16
Flights starting at £16. Choose between JetBlue Airways, United Airlines, or Frontier Airlines to find the best price.
Kiwi-Code uncovers prices airlines don't want you to see.
Use our flexible filters to tailor your search.
Look out for the travel hack star icon for even cheaper fares.
Tips to know when travelling to Denver
Search by stops
Search by carrier
Search by price
Search by departure date
One-way trips
Updated:

By subscribing you agree to receive offers according to the conditions described in our Privacy Policy.
Weekly direct flights
Mondays | Tuesdays | Wednesdays | Thursdays | Fridays | Saturdays | Sundays | |
---|---|---|---|---|---|---|---|
Direct flights | 7 | 7 | 7 | 7 | 7 | 6 | 7 |
Frontier Airlines on Mondays, Tuesdays, Wednesdays, Thursdays, Fridays, Saturdays, and Sundays.
United Airlines on Mondays, Tuesdays, Wednesdays, Thursdays, Fridays, Saturdays, and Sundays.
Check-in for a flight from San Diego to Denver
Name | Carrier code | IATA Code | Passport needed during booking | Online check-in available |
---|---|---|---|---|
JetBlue Airways | JBU | B6 | Yes | Opens 24 days before flight Closes 2 hours before flight |
United Airlines | UAL | UA | Yes | No |
Frontier Airlines | FFT | F9 | No | Opens 24 days before flight Closes 1 hours before flight |
Spirit Airlines | NKS | NK | No | Opens 24 days before flight Closes 1 hours before flight |
American Airlines | AAL | AA | Yes | No |
Denver travel tips
1) 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. |
---|---|
2) 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. |
3) 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. |
United States COVID-19 travel restrictions
Most travelers from San Diego, SAN can enter Denver, DEN.
Departure
Additional information |
|
---|
Information is provided as guidance only and accurate at the time of publishing. Always check government websites and airline materials before booking and traveling.
Learn more about COVID-19 restrictions in United States in our dedicated Stories article.
Frequently asked questions
Planning a trip? Thanks to our Virtual Interlining algorithm, we offer billions of route combinations between any A and any B in the world by plane, train, and bus. Find the cheapest routes and best deals for you, as well as the best dates on which to travel.
Explore alternative trips
Flights from San Diego
- Flights from San Diego to London
- Flights from San Diego to Edmonton
- Flights from San Diego to Las Vegas
- Flights from San Diego to Cincinnati
- Flights from San Diego to Manchester
- Flights from San Diego to Phoenix
- Flights from San Diego to New York
- Flights from San Diego to Houston
- Flights from San Diego to San Francisco
- Flights from San Diego to Minneapolis
- Flights from San Diego to Austin
- Flights from San Diego to Los Angeles
- Flights from San Diego to New Orleans
- Flights from San Diego to Amsterdam
- Flights from San Diego to Madrid
- Flights from San Diego to Raleigh
- Flights from San Diego to Nashville
- Flights from San Diego to Detroit
- Flights from San Diego to Atlanta
- Flights from San Diego to Chicago
Flights to Denver
- Flights from London to Denver
- Flights from Calgary to Denver
- Flights from Manchester to Denver
- Flights from Bangkok to Denver
- Flights from Dublin to Denver
- Flights from Taipei to Denver
- Flights from Buffalo to Denver
- Flights from Athens to Denver
- Flights from Detroit to Denver
- Flights from Toronto to Denver
- Flights from Manila to Denver
- Flights from Edinburgh to Denver
- Flights from New York to Denver
- Flights from Seattle to Denver
- Flights from Austin to Denver
- Flights from Chicago to Denver
- Flights from San Francisco to Denver
- Flights from Orlando to Denver
- Flights from Fort Lauderdale to Denver
- Flights from Los Angeles to Denver
Kiwi.com: the best free travel app for Android and iPhone
Find out more about the Kiwi.com app on kiwi.com/mobile . With our app you can search for the best plane, train and bus connections. The Kiwi.com mobile app offers cheap flights, access to hidden features, travel hacks and special offers.
Search cheap flights
Simplified planning and booking
Travel deals built for you
Kiwi.com travel hacks