There are 5 ways to get from San Diego to Boulder by plane, bus, bus (Greyhound), train, or car
Select an option below to see step-by-step directions and to compare ticket prices and travel times in Rome2Rio's travel planner.
Fly to Denver, bus
best- Fly from San Diego International Airport (SAN) to Denver (DEN)plane SAN - DEN
- Take the bus from Denver Airport Station Gate 8 to Downtown Boulder Stationbus
3h 52mDrive 1,083.3 mi
cheapest- Drive from San Diego to Bouldercar 1,083.3 mi
17h 15m$198–286Bus
- Take the bus from San Diego Greyhound Bus Stop to Las Vegas Bus Terminalbus
- Take the bus from Las Vegas Bus Terminal to Denver Union Stationbus
- Take the bus from Union Station Gate B17 to Broadway & Euclid Avebus Ff1
27h 37mTrain, bus
- Take the train from San Diego to Fullerton Amtrak Stationtrain
- Take the train from Fullerton Amtrak Station to Las Vegas Amtrak Stationtrain
- Take the bus from Las Vegas Transportation Center to Denverbus
- Take the bus from Union Station Gate B17 to Broadway & Regent Drbus Ff1
30h 15mFly to Colorado Springs Airport, bus
- Fly from San Diego International Airport (SAN) to Colorado Springs Airport (COS)plane SAN - COS
- Take the bus from Colorado Springs Airport to Denver International Airportbus
- Take the bus from Denver Airport Station Gate 8 to Downtown Boulder Stationbus
6h 42m
San Diego International Airport (SAN) to Denver (DEN) flights
Comparing Your Travel Options
The cheapest way to get from San Diego to Boulder is to drive which costs $190 - $290 and takes 17h 15m.
The fastest way to get from San Diego to Boulder is to drive which takes 17h 15m and costs $190 - $290.
No, there is no direct bus from San Diego to Boulder. However, there are services departing from San Diego Greyhound Bus Stop and arriving at Broadway & Euclid Ave via Las Vegas Bus Terminal and Union Station Gate B17. The journey, including transfers, takes approximately 27h 37m.
The distance between San Diego and Boulder is 901 miles. The road distance is 1089.6 miles.
The best way to get from San Diego to Boulder without a car is to bus which takes 27h 37m and costs .
It takes approximately 3h 52m to get from San Diego to Boulder, including transfers.
San Diego to Boulder bus services, operated by Greyhound USA, depart from San Diego Greyhound Bus Stop station.
San Diego to Boulder bus services, operated by Greyhound USA, arrive at Las Vegas Bus Terminal station.
Boulder is 1h ahead of San Diego. It is currently 4:59 AM in San Diego and 5:59 AM in Boulder.
Yes, the driving distance between San Diego to Boulder is 1090 miles. It takes approximately 17h 15m to drive from San Diego to Boulder.
What companies run services between San Diego, CA, USA and Boulder, CO, USA?
You can take a vehicle from County Center/Little Italy Station to Broadway & Euclid Ave via Old Town Station, San Diego Greyhound Bus Stop, Las Vegas Bus Terminal, Denver Union Station, and Union Station Gate B17 in around 27h 37m.
- Website
- southwest.com
Flights from San Diego International Airport to Denver
- Ave. Duration
- 2h 20m
- When
- Every day
- Estimated price
- $60–340
Flights from San Diego International Airport to Colorado Springs Airport
- Ave. Duration
- 2h 12m
- When
- Monday, Thursday, Friday, and Sunday
- Estimated price
- $55–310
Flights from San Diego International Airport to Colorado Springs Airport via Denver
- Ave. Duration
- 3h 55m
- When
- Monday, Thursday, and Friday
- Estimated price
- $60–320
Flights from San Diego International Airport to Colorado Springs Airport via Phoenix
- Ave. Duration
- 4h 40m
- When
- Every day
- Estimated price
- $55–310
Flights from San Diego International Airport to Colorado Springs Airport via Las Vegas
- Ave. Duration
- 4h 18m
- When
- Sunday and Saturday
- Estimated price
- $60–310
- Website
- united.com
Flights from San Diego International Airport to Denver
- Ave. Duration
- 2h 31m
- When
- Every day
- Estimated price
- $60–340
Flights from San Diego International Airport to Colorado Springs Airport via Denver
- Ave. Duration
- 4h 20m
- When
- Every day
- Estimated price
- $60–320
- Website
- alaskaair.com
Flights from San Diego International Airport to Denver
- Ave. Duration
- 2h 33m
- When
- Every day
- Estimated price
- $150–750
- Website
- flyfrontier.com
Flights from San Diego International Airport to Denver
- Ave. Duration
- 2h 32m
- When
- Every day
- Estimated price
- $120–210
Rome2Rio's guide to Amtrak
Contact DetailsContact Details
- Phone
- +1 800-872-7245
- Website
- Amtrak
Train from San Diego to Fullerton Amtrak Station
- Ave. Duration
- 2h 19m
- Frequency
- Hourly
- Estimated price
- $55–90
- Website
- Amtrak
Train from Fullerton Amtrak Station to Las Vegas Amtrak Station
- Ave. Duration
- 19h 40m
- Frequency
- Once daily
- Estimated price
- $550–850
- Website
- Amtrak
- Phone
- +44 1743 612002
- [email protected]
- Website
- Regional Transport
Bus from Denver Airport Station Gate 8 to Downtown Boulder Station
- Ave. Duration
- 1h 6m
- Frequency
- Hourly
- Website
- Regional Transport
Bus from Union Station Gate B17 to Broadway & Euclid Ave
- Ave. Duration
- 47 min
- Frequency
- Every 30 minutes
- Website
- Regional Transport
Bus from Union Station Gate B17 to Broadway & Regent Dr
- Ave. Duration
- 45 min
- Frequency
- Every 30 minutes
- Website
- Regional Transport
Bus from Denver Airport Station Gate 8 to Downtown Boulder Station
- Ave. Duration
- 1h 6m
- Frequency
- Hourly
- Website
- Regional Transport
Rome2Rio's guide to Greyhound USA
Contact DetailsContact Details
- Phone
- +1 214-849-8100
- [email protected]
- Website
- Greyhound
Bus from San Diego Greyhound Bus Stop to Las Vegas Bus Terminal
- Ave. Duration
- 8h 10m
- Frequency
- Once daily
- Estimated price
- $60–100
- Website
- Greyhound
Bus from Las Vegas Bus Terminal to Denver Union Station
- Ave. Duration
- 16h 20m
- Frequency
- Once daily
- Estimated price
- $120–200
- Website
- Greyhound
- Phone
- +1 800-923-1799
- [email protected]
- Website
- Omnibus Express
Bus from Las Vegas Transportation Center to Denver
- Ave. Duration
- 4h 46m
- Frequency
- 4 times a day
- Estimated price
- $70–95
- Schedules at
- Omnibus Express
Bus from Colorado Springs Airport to Denver International 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
Rome2Rio's Travel Guide series provide vital information for the global traveller. Filled with useful and timely travel information, the guides answer all the hard questions - such as 'How do I buy a ticket?', 'Should I book online before I travel? ', 'How much should I expect to pay?', 'Do the trains and buses have Wifi?' - to help you get the most out of your next trip.
Related travel guides
Travelling to the US: What do I need to know?
Read the travel guide
Need to know: Greyhound
Read the travel guide
Why you should take the train in the US
Read the travel guide
Booking & Getting There
There are 176+ hotels available in Boulder.












