There are most likely no direct flights on the Denver — San Diego route
Flaut.Travel was designed and developed by a team dedicated to making the process of searching, comparing and booking airline tickets as easy and convenient as possible. Our service helps travelers to find and buy the cheapest flights from Denver to San Diego. We have connected more than 40 airlines and airline ticketing agencies to help you find the most suitable and affordable flight option.
A non-stop flight is the most convenient and comfortable way to fly from Denver to San Diego, despite the fact that sometimes flights with transfers can cost significantly less.
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Answers to questions about the route that travelers are most interested in.
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There are most likely no direct flights on the Denver — San Diego route
The cost of a one-way flight from Denver to San Diego ranges from $79 (July 2026) to $148 (June 2026). On average, the ticket price is about $113–$148.
We couldn't find any special offers for flights from Denver to San Diego
Denver — San Diego
06/30/2026
Departure
Direct flight
WN1703
starting at $312
Denver — San Diego
06/30/2026
Departure
Direct flight
F92421
starting at $260
Denver — San Diego
07/03/2026
Departure
Direct flight
UA5529
starting at $254
Denver — San Diego
07/09/2026
Departure
Direct flight
AS3020
starting at $234
Denver — San Diego
07/09/2026
Departure
Direct flight
UA2309
starting at $236
Denver — San Diego
07/11/2026
Departure
Direct flight
F94989
starting at $140
starting at $312
starting at $126
starting at $116
starting at $153
More than 4 airlines operate flights from Denver to San Diego, including Southwest Airlines, Frontier Airlines, United Airlines, and Alaska Airlines. This is a popular route, so passengers can choose tickets based on budget and preferences. Ticket prices start from $116, and our service lets you instantly compare all options. The variety of offers simplifies planning: you can choose budget fares or more comfortable options with baggage included or extra services. We help you find the best deals so your trip is cost-efficient.
The cheapest flight ticket from Denver to San Diego according to data for the last 48 hours costs $116
Often the best time to buy tickets from Denver to San Diego is 2 months before departure.
Based on statistics over the past years, the lowest prices for flights from Denver to San Diego can be found flying in these months: July, June.
The fastest flights from Denver to San Diego start from 2 hours 22 minutes in the air.
The following airlines operate direct flights on the route Denver — San Diego: Southwest Airlines, Frontier Airlines, United Airlines
The cheapest one-way flight from Denver to San Diego departs on 06/27/2026, is operated by United Airlines and costs $116
The cheapest roundtrip flight from Denver to San Diego departs on 07/12/2026, is operated by Frontier Airlines and costs $155
Fastest flight from Denver to San Diego takes 2h 22m
There are direct flights on this route 4 days a week: Tu, Th, Fr, and Sa
The distance between Denver and San Diego is 1340km (831 miles). There are 36 direct flights from Denver to San Diego. The time difference between Denver and San Diego is 1h. Flights from Denver begin at 5:45 AM. The latest flight from Denver departs at 10:29 PM