Routes/Denver, CO to San Diego, CA

Denver, CO to San Diego, CA

Average one-way fare in 2026 Q1: $169 · 853 nonstop miles · 2078 passengers per day.

2026 Q1 fare$169

2025 Q1 fare$193

Change−$24

Passengers/day2078

Distance853 mi

The average fare a year earlier (2025 Q1) was $193. The change is $24 lower (12.3%).

The largest carrier on this route in 2026 Q1 was Southwest with 36% of passengers. The lowest-fare carrier was Frontier with 12% of passengers, at an average fare of $110.

All routes from Denver, CO · All routes from San Diego, CA

All quarters on this route

Quarter	Passengers/day	Avg. fare	Largest carrier	Largest share	Lowest-fare carrier
2024 Q1	1746	$188	Southwest	48%	Frontier
2024 Q2	2061	$179	Southwest	46%	Frontier
2024 Q3	2189	$180	Southwest	42%	Frontier
2024 Q4	1924	$190	Southwest	41%	Frontier
2025 Q1	1705	$193	Southwest	45%	Frontier
2025 Q2	1906	$181	Southwest	42%	Frontier
2025 Q3	2204	$179	Southwest	40%	Frontier
2025 Q4	2065	$164	Southwest	40%	Frontier
2026 Q1	2078	$169	Southwest	36%	Frontier

Source: U.S. Department of Transportation, Consumer Airfare Report Table 1, 2026 Q1. Figures are average one-way fares paid, including taxes and fees, for the quarter shown. Record: city markets 30325 and 33570; U.S. Department of Transportation, Domestic Airline Consumer Airfare Report, Table 1: top 1,000 contiguous-state city-pair markets (average one-way fare, passengers per day, largest carrier, lowest-fare carrier). Fetched 2026-09-27T00:40:04Z. Source data.