There are 7 ways to get from Boulder to San Diego by bus, plane, bus (Greyhound, Flixbus), train, car, or bus (Greyhound)
Select an option below to see step-by-step directions and to compare ticket prices and travel times in Rome2Rio's travel planner.
Bus to Denver, fly
best- Take the bus from US 36 & Flatiron Station Gate A to Denver Airport Station Gate 6bus
- Fly from Denver (DEN) to San Diego International Airport (SAN)plane DEN - SAN
4h 52mDrive 1,084.6 mi
cheapest- Drive from Boulder to San Diegocar 1,084.6 mi
17h 12m$198–286Bus via Santa Ana
- Take the bus from Downtown Boulder Station Gate 1 to Union Stationbus Ff1 / ...
- Take the bus from Denver Union Station to Las Vegas Bus Terminalbus
- Take the bus from Las Vegas Bus Terminal to Santa Ana Bus Stopbus
- Take the bus from Santa Ana Bus Stop to San Diegobus
26h 40mBus, train
- Take the bus from Broadway & 20th St to Union Stationbus Ff1 / ...
- Take the bus from Denver to Las Vegas Transportation Centerbus
- Take the train from Las Vegas Amtrak Station to Fullerton Amtrak Stationtrain
- Take the train from Fullerton Amtrak Station to San Diegotrain
31h 54mBus, bus to Colorado Springs Airport, fly
- Take the bus from US 36 & Flatiron Station Gate A to Denver Airport Station Gate 6bus
- Take the bus from Denver International Airport to Colorado Springs Airportbus
- Fly from Colorado Springs Airport (COS) to San Diego International Airport (SAN)plane COS - SAN
7h 44mBus
- Take the bus from Downtown Boulder Station Gate 1 to Union Stationbus Ff1 / ...
- Take the bus from Denver Union Station to Las Vegas Bus Terminalbus
- Take the bus from Las Vegas Bus Terminal to San Diego Greyhound Bus Stopbus
26h 53mBus #2
- Take the bus from Downtown Boulder Station Gate 1 to Union Stationbus Ff1 / ...
- Take the bus from Denver Union Station to Las Vegas Bus Terminalbus
- Take the bus from Las Vegas Strip to San Diegobus
29h 18m
Denver (DEN) to San Diego International Airport (SAN) flights
Comparing Your Travel Options
The cheapest way to get from Boulder to San Diego is to drive which costs $190 - $290 and takes 17h 12m.
The fastest way to get from Boulder to San Diego is to drive which takes 17h 12m and costs $190 - $290.
No, there is no direct bus from Boulder station to San Diego. However, there are services departing from Downtown Boulder Station Gate 1 and arriving at San Diego via Denver Union Station, Las Vegas Bus Terminal and Santa Ana Bus Stop. The journey, including transfers, takes approximately 26h 40m.
The distance between Boulder and San Diego is 901 miles. The road distance is 1091 miles.
The best way to get from Boulder to San Diego without a car is to bus via Santa Ana which takes 26h 40m and costs .
It takes approximately 4h 52m to get from Boulder to San Diego, including transfers.
Boulder to San Diego bus services, operated by Regional Transport, depart from Downtown Boulder Station Gate 1.
Boulder to San Diego bus services, operated by Regional Transport, arrive at Union Station.
San Diego is 1h behind Boulder. It is currently 6:12 PM in Boulder and 5:12 PM in San Diego.
Yes, the driving distance between Boulder to San Diego is 1091 miles. It takes approximately 17h 12m to drive from Boulder to San Diego.
What companies run services between Boulder, CO, USA and San Diego, CA, USA?
You can take a bus from Downtown Boulder Station Gate 1 to San Diego via Union Station, Denver Union Station, Las Vegas Bus Terminal, and Santa Ana Bus Stop in around 26h 40m.
- Website
- southwest.com
Flights from Denver to San Diego International Airport
- Ave. Duration
- 2h 30m
- When
- Every day
- Estimated price
- $70–360
Flights from Colorado Springs Airport to San Diego International Airport
- Ave. Duration
- 2h 25m
- When
- Monday, Thursday, Friday, and Sunday
- Estimated price
- $70–380
Flights from Colorado Springs Airport to San Diego International Airport via Las Vegas
- Ave. Duration
- 4h 18m
- When
- Saturday, Monday, Thursday, Friday, and Sunday
- Estimated price
- $70–390
Flights from Colorado Springs Airport to San Diego International Airport via Phoenix
- Ave. Duration
- 4h 29m
- When
- Every day
- Estimated price
- $70–390
Flights from Colorado Springs Airport to San Diego International Airport via Denver
- Ave. Duration
- 4h 35m
- When
- Saturday
- Estimated price
- $75–400
- Website
- united.com
Flights from Denver to San Diego International Airport
- Ave. Duration
- 2h 25m
- When
- Every day
- Estimated price
- $70–360
Flights from Colorado Springs Airport to San Diego International Airport via Denver
- Ave. Duration
- 4h 34m
- When
- Every day
- Estimated price
- $75–400
- Website
- alaskaair.com
Flights from Denver to San Diego International Airport
- Ave. Duration
- 2h 35m
- When
- Every day
- Estimated price
- $160–800
- Website
- flyfrontier.com
Flights from Denver to San Diego International Airport
- Ave. Duration
- 2h 28m
- When
- Every day
- Estimated price
- $120–210
Rome2Rio's guide to Amtrak
Contact DetailsContact Details
- Phone
- +1 800-872-7245
- Website
- Amtrak
Train from Las Vegas Amtrak Station to Fullerton Amtrak Station
- Ave. Duration
- 20h 32m
- Frequency
- Once daily
- Estimated price
- $270–700
- Website
- Amtrak
Train from Fullerton Amtrak Station to San Diego
- Ave. Duration
- 2h 26m
- Frequency
- Hourly
- Estimated price
- $28–75
- Website
- Amtrak
- Phone
- +44 1743 612002
- [email protected]
- Website
- Regional Transport
Bus from US 36 & Flatiron Station Gate A to Denver Airport Station Gate 6
- Ave. Duration
- 40 min
- Frequency
- Hourly
- Website
- Regional Transport
Bus from Downtown Boulder Station Gate 1 to Union Station
- Ave. Duration
- 55 min
- Frequency
- Every 30 minutes
- Website
- Regional Transport
Bus from Broadway & 20th St to Union Station
- Ave. Duration
- 45 min
- Frequency
- Hourly
- Website
- Regional Transport
Bus from US 36 & Flatiron Station Gate A to Denver Airport Station Gate 6
- Ave. Duration
- 40 min
- Frequency
- Hourly
- Website
- Regional Transport
Bus from Downtown Boulder Station Gate 1 to Union Station
- Ave. Duration
- 55 min
- Frequency
- Every 30 minutes
- Website
- Regional Transport
Bus from Downtown Boulder Station Gate 1 to Union Station
- Ave. Duration
- 55 min
- Frequency
- Every 30 minutes
- Website
- Regional Transport
Rome2Rio's guide to Greyhound USA
Contact DetailsContact Details
- Phone
- +1 214-849-8100
- [email protected]
- Website
- Greyhound
Bus from Denver Union Station to Las Vegas Bus Terminal
- Ave. Duration
- 15h 30m
- Frequency
- Once daily
- Estimated price
- $120–190
- Website
- Greyhound
Bus from Las Vegas Bus Terminal to Santa Ana Bus Stop
- Ave. Duration
- 5h 30m
- Frequency
- Twice daily
- Estimated price
- $40–70
- Website
- Greyhound
Bus from Denver Union Station to Las Vegas Bus Terminal
- Ave. Duration
- 15h 30m
- Frequency
- Once daily
- Estimated price
- $120–190
- Website
- Greyhound
Bus from Las Vegas Bus Terminal to San Diego Greyhound Bus Stop
- Ave. Duration
- 8h 5m
- Frequency
- Once daily
- Estimated price
- $60–100
- Website
- Greyhound
Bus from Denver Union Station to Las Vegas Bus Terminal
- Ave. Duration
- 15h 30m
- Frequency
- Once daily
- Estimated price
- $120–190
- Website
- Greyhound
- Phone
- +1 (855) 626-8585
- Website
- Flixbus USA
Bus from Santa Ana Bus Stop to San Diego
- Ave. Duration
- 1h 45m
- Frequency
- Once daily
- Estimated price
- $13–21
- Schedules at
- Flixbus USA
Bus from Las Vegas Strip to San Diego
- Ave. Duration
- 9h 20m
- Frequency
- 6 times a week
- Estimated price
- $60–95
- Schedules at
- Flixbus USA
- Phone
- +1 800-923-1799
- [email protected]
- Website
- Omnibus Express
Bus from Denver to Las Vegas Transportation Center
- Ave. Duration
- 4h 45m
- Frequency
- 3 times a day
- Estimated price
- $70–95
- Schedules at
- Omnibus Express
Bus from Denver International Airport to Colorado Springs Airport
- Ave. Duration
- 2h 25m
- Frequency
- Hourly
- Estimated price
- $40–60
- Website
- Groome Transportation Colorado Springs
Want to know more about travelling around United States
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