Boulder to San Diego flights
San Diego lies 1,337 km (831 mi) south-west of Boulder, -1 h on the clock. What the numbers say about getting there, and where to book.
A nonstop flight would take about 2 h 28 min gate to gate, based on the distance and typical cruise speed with taxi and climb allowed for; connecting itineraries add the layover on top.
| Boulder | San Diego | |
|---|---|---|
| Country | United States | United States |
| Population | 106,803 | 1.4 million |
| Elevation | 1,630 m (5,348 ft) | 20 m (66 ft) |
| Time now | UTC-6 (America/Denver) | UTC-7 (America/Los_Angeles) |
| Nearest large airport | DEN, 54 km out | SAN, 3 km out |
| Postal codes | 80301–80314 | 92101–92199 |
Clocks in San Diego are 1 h behind Boulder right now, so a 2 h 28 min journey lands only 1 h 28 min later by the destination clock.
Airports at each end
Leaving Boulder
Boulder is served by 2 airports with scheduled flights within 100 km. The closest large one is Denver International Airport (DEN), 54 km (34 mi) from the centre, whose 16,000-ft runway is long enough for long-haul wide-body aircraft. The alternatives are Rocky Mountain Metropolitan Airport (BJC, 18 km).
Arriving in San Diego
San Diego is served by 3 airports with scheduled flights within 100 km. The closest large one is San Diego International Airport (SAN), 3 km (2 mi) from the centre, with a longest runway of 9,401 ft, which limits it to short and medium-haul aircraft. The alternatives are General Abelardo L. Rodriguez International Airport (TIJ, 27 km), McClellan-Palomar Airport (CLD, 47 km).
| Airport | Code | From centre | Longest runway | Elevation |
|---|---|---|---|---|
| San Diego International Airport | SAN | 3 km (2 mi) | 9,401 ft | 17 ft |
| General Abelardo L. Rodriguez International Airport | TIJ | 27 km (17 mi) | 9,711 ft | 489 ft |
| McClellan-Palomar Airport (regional) | CLD | 47 km (29 mi) | 4,897 ft | 331 ft |
Book a flight to San Diego
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Staying in San Diego
Our booking partner lists 1,392+ places to stay in San Diego (statistics below are from the first 1,000). Of the 706 with a star rating, the largest group is 3-star (469), and 9 are five-star. Across 294 properties with at least 50 reviews, the average guest score is 8.2 out of 10. Guests have left 286,439 reviews in total.
Book a hotel in San Diego
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Common questions
How far is San Diego from Boulder?
1,337 km (831 mi) in a straight line, south-west of Boulder.
How long does it take to get from Boulder to San Diego by air?
About 2 h 28 min, estimated from distance and typical speeds for a nonstop flight. Timetables and traffic decide the real figure.
Is there a time difference between Boulder and San Diego?
San Diego is 1 h behind at the moment (America/Los_Angeles against America/Denver).
Which airports are used for Boulder to San Diego flights?
Typically Denver International Airport (DEN) to San Diego International Airport (SAN); San Diego also has TIJ, CLD.
Where can I stay in San Diego?
Our booking partner lists 1,392+ places to stay in San Diego, bookable on this site.
Where these facts come from
- GeoNames (CC BY 4.0): population, elevation, time zone, postal codes
- Wikidata (CC0): area, sister cities, visitor numbers, heritage listings, stations and ports
- OurAirports (public domain): airports, runways
- Natural Earth (public domain): map outlines
Data compiled 13 September 2026. Hotel figures are from our booking partner’s catalogue on that date. Journey times on this page are estimates from distance, not timetables; check the operator before you rely on one.