There are 5 ways to get from Seattle to Boulder by plane, bus, bus (Greyhound, Flixbus), 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, bus
best- Fly from Seattle-Tacoma International Airport (SEA) to Denver (DEN)plane SEA - DEN
- Take the bus from Denver Airport Station Gate 8 to Downtown Boulder Stationbus
6h 4m$119–609Bus
- Take the bus from Seattle Bus Station to Sacramento Bus Stationbus
- Take the bus from Sacramento Bus Station to Sparks Transit Centerbus
- Take the bus from Sparks Transit Center to Denver Union Stationbus
- Take the bus from Union Station Gate B17 to Broadway & Euclid Avebus Ff1 / ...
42h 23m$178–365Bus, train
- Take the bus from Seattle to Sacramento Bus Stationbus
- Take the train from Sacramento to Denvertrain
- Take the bus from Union Station Gate B17 to Downtown Boulder Stationbus Ff1 / ...
2d 4h$214–839Drive 1,264.8 mi
- Drive from Seattle to Bouldercar 1,264.8 mi
20h 44m$231–334Train, bus
- Take the train from Seattle to Sacramentotrain
- Take the train from Sacramento to Denvertrain
- Take the bus from Union Station Gate B17 to Broadway & Regent Drbus Ff1 / ...
2d 5h$232–906
Seattle to Boulder by bus
Questions & Answers
The cheapest way to get from Seattle to Boulder is to bus which costs $170 - $370 and takes 42h 23m.
The fastest way to get from Seattle to Boulder is to fly and bus which takes 6h 4m and costs $110 - $650.
No, there is no direct bus from Seattle station to Boulder. However, there are services departing from Seattle Bus Station and arriving at Broadway & Euclid Ave via Sacramento Bus Station, Sparks Transit Center and Union Station Gate B17. The journey, including transfers, takes approximately 42h 23m.
The distance between Seattle and Boulder is 1088 miles. The road distance is 1272.2 miles.
The best way to get from Seattle to Boulder without a car is to bus which takes 42h 23m and costs $170 - $370.
It takes approximately 6h 4m to get from Seattle to Boulder, including transfers.
Seattle to Boulder bus services, operated by Greyhound USA, depart from Seattle Bus Station.
Seattle to Boulder bus services, operated by Greyhound USA, arrive at Sacramento Bus Station.
Boulder is 1h ahead of Seattle. It is currently 10:00 PM in Seattle and 11:00 PM in Boulder.
Yes, the driving distance between Seattle to Boulder is 1272 miles. It takes approximately 20h 44m to drive from Seattle to Boulder.
What companies run services between Seattle, WA, USA and Boulder, CO, USA?
You can take a bus from Seattle Bus Station to Broadway & Euclid Ave via Sacramento Bus Station, Sparks Transit Center, Denver Union Station, and Union Station Gate B17 in around 42h 23m.
- Website
- united.com
Flights from Seattle-Tacoma International Airport to Denver
- Ave. Duration
- 2h 48m
- When
- Every day
- Estimated price
- $110–600
- Website
- southwest.com
Flights from Seattle-Tacoma International Airport to Denver
- Ave. Duration
- 2h 38m
- When
- Every day
- Estimated price
- $110–600
- Website
- alaskaair.com
Flights from Seattle-Tacoma International Airport to Denver
- Ave. Duration
- 2h 42m
- When
- Every day
- Estimated price
- $110–600
- Website
- delta.com
Flights from Seattle-Tacoma International Airport to Denver
- Ave. Duration
- 2h 52m
- When
- Every day
- Estimated price
- $110–600
- Website
- flyfrontier.com
Flights from Seattle-Tacoma International Airport to Denver
- Ave. Duration
- 2h 51m
- When
- Monday, Thursday, Friday, and Sunday
- Estimated price
- $110–600
Rome2Rio's guide to Amtrak
Contact Details
- Phone
- +1 800-872-7245
- Website
- amtrak.com
Train from Sacramento to Denver
- Ave. Duration
- 31h 4m
- Frequency
- Once daily
- Estimated price
- $120–650
- Website
- https://www.amtrak.com/home.html
Train from Seattle to Sacramento
- Ave. Duration
- 20h 33m
- Frequency
- Once daily
- Estimated price
- $100–260
- Website
- https://www.amtrak.com/home.html
- Phone
- +1 303-299-6000
- Website
- rtd-denver.com
Bus from Denver Airport Station Gate 8 to Downtown Boulder Station
- Ave. Duration
- 1h 7m
- Frequency
- Hourly
- Estimated price
- $3
- Website
- https://www.rtd-denver.com/
- Adult
- $3
Bus from Union Station Gate B17 to Broadway & Euclid Ave
- Ave. Duration
- 47 min
- Frequency
- Every 20 minutes
- Estimated price
- $3
- Website
- https://www.rtd-denver.com/
- Adult
- $3
Bus from Union Station Gate B17 to Downtown Boulder Station
- Ave. Duration
- 56 min
- Frequency
- Every 20 minutes
- Estimated price
- $3
- Website
- https://www.rtd-denver.com/
- Adult
- $3
Bus from Union Station Gate B17 to Broadway & Regent Dr
- Ave. Duration
- 45 min
- Frequency
- Every 20 minutes
- Estimated price
- $3
- Website
- https://www.rtd-denver.com/
- Adult
- $3
Rome2Rio's guide to Greyhound USA
Contact Details
- Phone
- +1 214-849-8100
- ifsr@greyhound.com
- Website
- greyhound.com
Bus from Seattle Bus Station to Sacramento Bus Station
- Ave. Duration
- 15h 50m
- Frequency
- Once daily
- Estimated price
- $85–130
- Website
- https://www.greyhound.com/
Bus from Sacramento Bus Station to Sparks Transit Center
- Ave. Duration
- 2h 40m
- Frequency
- Twice daily
- Estimated price
- $21–65
- Website
- https://www.greyhound.com/
Bus from Sparks Transit Center to Denver Union Station
- Ave. Duration
- 20h 55m
- Frequency
- Once daily
- Estimated price
- $65–110
- Website
- https://www.greyhound.com/
- Phone
- +1 (855) 626-8585
- Website
- flixbus.com
Bus from Seattle Bus Station to Sacramento Bus Station
- Ave. Duration
- 16h 45m
- Frequency
- Once daily
- Estimated price
- $85–190
- Schedules at
- flixbus.com
Bus from Seattle to Sacramento Bus Station
- Ave. Duration
- 17h 25m
- Frequency
- Once daily
- Estimated price
- $85–180
- Schedules at
- flixbus.com
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
More Questions & Answers
There are 71+ hotels available in Boulder.









