There are 5 ways to get from Boulder to St. Louis Airport (STL) by bus, plane, bus (Greyhound), 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.
Bus to Denver, fly
best- Take the bus from US 36 & Flatiron Station Gate A to Denver Airport Station Gate 6
- Fly from Denver (DEN) to Lambert–St. Louis International Airport (STL)DEN - STL
4h 23m$126–706Bus
cheapest- Take the bus from Broadway & 20th St to Union StationFf1 / ...
- Take the bus from Denver Union Station to St Louis Bus StationGreyhound US1200
18h 58m$96–226Drive 854.2 mi
- Drive from Boulder to St. Louis Airport (STL)854.2 mi
13h 28m$156–226Bus, bus to Colorado Springs Airport, fly
- Take the bus from US 36 & Flatiron Station Gate A to Denver Airport Station Gate 6
- Take the bus from Denver International Airport to Colorado Springs Airport
- Fly from Colorado Springs Airport (COS) to Lambert–St. Louis International Airport (STL)COS - STL
9h 13m$166–716Bus via Burlington
- Take the bus from Downtown Boulder Station Gate 1 to Union StationFf1 / ...
- Take the bus from Denver to Burlington
- Take the bus from Burlington to Lambert-St. Louis International Airport
22h 35m$178–393
Boulder to St. Louis Airport (STL) by bus and train
Questions & Answers
The cheapest way to get from Boulder to St. Louis Airport (STL) is to bus which costs $95 - $230 and takes 18h 58m.
The fastest way to get from Boulder to St. Louis Airport (STL) is to bus and fly which takes 4h 23m and costs $120 - $750.
No, there is no direct bus from Boulder station to St. Louis Airport (STL). However, there are services departing from Downtown Boulder Station Gate 1 and arriving at Lambert-St. Louis International Airport via Union Station Gate B13, Denver and Burlington. The journey, including transfers, takes approximately 22h 35m.
The distance between Boulder and St. Louis Airport (STL) is 817 miles. The road distance is 859.2 miles.
The best way to get from Boulder to St. Louis Airport (STL) without a car is to bus which takes 18h 58m and costs $95 - $230.
It takes approximately 4h 23m to get from Boulder to St. Louis Airport (STL), including transfers.
Boulder to St. Louis Airport (STL) bus services, operated by Regional Transportation District, depart from Downtown Boulder Station Gate 1.
Boulder to St. Louis Airport (STL) bus services, operated by Regional Transportation District, arrive at Union Station.
St. Louis Airport (STL) is 1h ahead of Boulder. It is currently 12:29 PM in Boulder and 1:29 PM in St. Louis Airport (STL).
Yes, the driving distance between Boulder to St. Louis Airport (STL) is 859 miles. It takes approximately 13h 28m to drive from Boulder to St. Louis Airport (STL).
What companies run services between Boulder, CO, USA and St. Louis Airport (STL), USA?
You can take a bus from Broadway & 20th St to LAMBERT AIRPORT TERMINAL #1 station via Denver Union Station, St Louis Bus Station, and CIVIC CENTER station in around 18h 58m.
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- Website
- southwest.com
Flights from Denver to Lambert–St. Louis International Airport
- Ave. Duration
- 2h 3m
- When
- Every day
- Estimated price
- $120–700
Flights from Denver to Lambert–St. Louis International Airport via Kansas City
- Ave. Duration
- 4h 23m
- When
- Every day
- Estimated price
- $120–700
Flights from Denver to Lambert–St. Louis International Airport via Omaha
- Ave. Duration
- 4h 57m
- When
- Thursday, Friday, and Sunday
- Estimated price
- $130–700
Flights from Colorado Springs Airport to Lambert–St. Louis International Airport via Denver
- Ave. Duration
- 4h 13m
- When
- Thursday to Sunday
- Estimated price
- $120–650
Flights from Colorado Springs Airport to Lambert–St. Louis International Airport via Chicago Midway
- Ave. Duration
- 4h 25m
- When
- Thursday, Friday, and Sunday
- Estimated price
- $150–700
Flights from Colorado Springs Airport to Lambert–St. Louis International Airport via Dallas
- Ave. Duration
- 4h 42m
- When
- Monday to Saturday
- Estimated price
- $140–700
Flights from Colorado Springs Airport to Lambert–St. Louis International Airport via Houston Hobby Apt
- Ave. Duration
- 6h 40m
- When
- Monday, Tuesday, Friday, and Sunday
- Estimated price
- $180–850
- Website
- united.com
Flights from Denver to Lambert–St. Louis International Airport
- Ave. Duration
- 2h 3m
- When
- Every day
- Estimated price
- $120–700
Flights from Colorado Springs Airport to Lambert–St. Louis International Airport via Denver
- Ave. Duration
- 4h 22m
- When
- Every day
- Estimated price
- $120–650
Flights from Colorado Springs Airport to Lambert–St. Louis International Airport via Chicago O'Hare
- Ave. Duration
- 5h 21m
- When
- Every day
- Estimated price
- $150–700
- Website
- aa.com
Flights from Colorado Springs Airport to Lambert–St. Louis International Airport via Dallas/Ft.Worth
- Ave. Duration
- 5h 35m
- When
- Every day
- Estimated price
- $140–700
Flights from Colorado Springs Airport to Lambert–St. Louis International Airport via Chicago O'Hare
- Ave. Duration
- 5h 29m
- When
- Monday, Thursday, Friday, Saturday, and Sunday
- Estimated price
- $150–700
- Website
- flyfrontier.com
Flights from Denver to Lambert–St. Louis International Airport
- Ave. Duration
- 2h 9m
- When
- Monday, Wednesday, Friday, and Saturday
- Estimated price
- $120–700
- Website
- delta.com
Flights from Colorado Springs Airport to Lambert–St. Louis International Airport via Minneapolis
- Ave. Duration
- 4h 52m
- When
- Monday, Wednesday, Friday, and Sunday
- Estimated price
- $150–750
- Phone
- +1 303-299-6000
- Website
- rtd-denver.com
Bus from US 36 & Flatiron Station Gate A to Denver Airport Station Gate 6
- Ave. Duration
- 40 min
- Frequency
- Hourly
- Estimated price
- $3
- Website
- https://www.rtd-denver.com/
- Adult
- $3
Bus from Broadway & 20th St to Union Station
- Ave. Duration
- 45 min
- Frequency
- Hourly
- Estimated price
- $3
- Website
- https://www.rtd-denver.com/
- Adult
- $3
Bus from Downtown Boulder Station Gate 1 to Union Station
- Ave. Duration
- 55 min
- Frequency
- Every 30 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 Denver Union Station to St Louis Bus Station
- Ave. Duration
- 16h 30m
- Frequency
- Once daily
- Estimated price
- $90–220
- Website
- https://www.greyhound.com/
- Phone
- +1 719-687-3456
- Website
- groometransportation.com
Bus from Denver International Airport to Colorado Springs Airport
- Ave. Duration
- 2h 25m
- Frequency
- Hourly
- Estimated price
- $40–60
- Website
- https://groometransportation.com/colorado-springs/
- Phone
- +1 (319) 753-2864
- info@burlingtontrailways.com
- Website
- burlingtontrailways.com
Bus from Denver to Burlington
- Ave. Duration
- 14h 55m
- Frequency
- Once daily
- Estimated price
- $130–270
- Website
- https://burlingtontrailways.com
- Saver Fares
- $130–200
- Flexible Fares
- $180–270
- Saver Fare
- $172
- Flex Fare
- $236
Bus from Burlington to Lambert-St. Louis International Airport
- Ave. Duration
- 4h 10m
- Frequency
- Once daily
- Estimated price
- $45–120
- Website
- https://burlingtontrailways.com
- Saver Fares
- $45–70
- Flexible Fares
- $65–95
- Saver Fare
- $87
- Flex Fare
- $120
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