Flight information for St. Louis to Denver
(STL to DEN)
Find info about flight duration, direct flights, and airports for your flight from St. Louis to Denver
| Best Price Found | $78 | The best flight deal from St. Louis to Denver found on momondo in the last 72 hours is $78 |
| Fastest flight time | 2h 20m | The fastest flight from St. Louis to Denver takes 2h 20m |
| Direct flights | None | There are no direct flights from St. Louis to Denver. Popular non-direct route for this connection is Lambert-St Louis Airport - Denver Intl Airport. |
| Airports in Denver | 2 airports | There are 2 airports near Denver: Denver Arapahoe Co (APA), Denver Intl (DEN) |
How to get the cheapest flight ticket from St. Louis to Denver
Look no further. We've gone through all the searches for this route on momondo so you have the important information and insights to find the cheapest flight ticket for your trip
What is the cheapest month to fly from St. Louis to Denver?
September
The cheapest time of year to fly to Denver from St. Louis is September. Most expensive is December
What is the cheapest day to depart St. Louis for Denver?
Wednesday
The cheapest day of the week is typically Wednesday. The most expensive is typically Sunday
When is the cheapest time to fly from St. Louis to Denver?
in the evening
St. Louis to Denver flights are approximately 41% more expensive in the afternoon than in the evening
What is the cheapest airline that flies to Denver from St. Louis?
Frontier
American Airlines, Delta, and Frontier are the most popular carriers operating from St. Louis to Denver
What is the cheapest St. Louis to Denver flight route?
Lambert-St Louis - Denver Intl
Fly from Lambert-St Louis to Denver Intl for the best St. Louis - Denver flight prices
How far in advance should you book St. Louis to Denver flights?
60 days before
The cheapest time to buy a flight from St. Louis to Denver is approximately 60 days to departure
Easily compare round-trip flights from St. Louis to Denver
Below you can see the best fares for your round-trip flight route over the next three months. All fares were found on momondo this week. Browse the quickest and cheapest flights from St. Louis to Denver by changing tabs
Find the cheapest one-way flights from St. Louis to Denver
If you're looking for one-way flights from St. Louis to Denver, view some of our deals below provided by Frontier, Spirit Airlines and United Airlines
Search last-minute flights to Denver from St. Louis
Find and compare flight prices for your last-minute flight from St. Louis to Denver
Best airlines flying from St. Louis to Denver
Compare and see reviews for airlines that fly from St. Louis to Denver with momondo
Reviews
Will not fly Frontier again. Bait and switch with initial ticket price and baggage fees at check in.
Reviews
Flight attendant for first class is definitely not a morning person. Oh and the WiFi DID NOT WORK!
Reviews
12 hours later still haven’t left the airport
Reviews
Great
Reviews
Not because the flight is going to Africa we can’t get better service on board
Are airlines flying from Lambert-St Louis to Denver Intl offering flexible cancellation due to COVID-19?
Due to the global impact of COVID-19, some of our airline partners operating flights from Lambert-St Louis to Denver Intl, such as Frontier, United Airlines, and American Airlines may have put in place flexible cancellation policies. Use our site to search for all of the airlines offering this flexibility to you.
How far is Lambert-St Louis to Denver Intl by plane?
The straight-line distance from Lambert-St Louis to Denver Intl is 794.2 mi. Typically, this will take 2h 24m by plane in normal conditions.
Can I fly to Denver Intl from Lambert-St Louis right now?
Most visitors from Lambert-St Louis need to provide a negative COVID-19 test result and/or quarantine to enter Denver Intl.
COVID-19 testing requirements
Visitors from Lambert-St Louis must present a negative RT-PCR (NAAT) or Antigen (quick-test) test taken 72 hours before departing to Denver Intl.
Quarantine requirements
Visitors from Lambert-St Louis are not required to quarantine after entering Denver Intl.
Can I fly back to Lambert-St Louis from Denver Intl?
COVID-19 testing requirements
Visitors from Denver Intl must present a negative RT-PCR (NAAT) or Antigen (quick-test) test taken 72 hours before departing to Lambert-St Louis.
Quarantine requirements
Visitors from Denver Intl are not required to quarantine after entering Lambert-St Louis.