Cheap flights from St. Louis to Denver
Flights overview
Prices shown are for one adult in Economy class flights from Zürich to New York. This includes the cheapest Business class options where available.
Prices reflect the lowest available in the next three months, though they are subject to change and availability.
Last-minute deals apply to the cheapest weekend trips available in the next seven days, with weekend trips being flights departing between Thursday and Saturday and returning on Sunday or Monday.
Flight duration shown is based on nonstop flights or those with the fewest stops available.
Prices reflect the lowest available in the next three months, though they are subject to change and availability.
Last-minute deals apply to the cheapest weekend trips available in the next seven days, with weekend trips being flights departing between Thursday and Saturday and returning on Sunday or Monday.
Flight duration shown is based on nonstop flights or those with the fewest stops available.
Useful information for finding cheap flights from St. Louis to Denver and booking your next trip
| Cheapest round-trip flights | HK$537 | FrontierNonstop3 hrSat, Jan 31 — Mon, Feb 2 | The cheapest round-trip flight from St. Louis to Denver is currently HK$537 | |
|---|---|---|---|---|
| Cheapest one-way flight | HK$226 | FrontierNonstop3 hrWed, Feb 25 | The cheapest one-way flight from St. Louis to Denver is currently HK$226 | |
| Last-minute weekend getaway | HK$2,280 | Frontier1 stop7 hrSat, Dec 20 — Mon, Dec 22 | The cheapest last-minute weekend getaway from St. Louis to Denver is currently HK$2,280 | |
| Cheapest business class flights | HK$3,478 | UnitedNonstop3 hrSat, Jan 24 — Mon, Jan 26 | The cheapest business class round-trip flight from St. Louis to Denver is currently HK$3,478 |
| Fastest flight | 2 hr 20 min | The fastest nonstop flight from St. Louis to Denver takes 2 hr 20 min |
|---|---|---|
| Nonstop flights | Every day | There are direct flights on this route every day. |
When is the cheapest time to fly?
Typical prices for the least expensive flights for weekend trips from St. Louis to Denver per month. Insights are based on fares observed in the last 12 months. Current prices may differ.
The cheapest month to fly from St. Louis to Denver is typically February. The most expensive month to fly is typically June.
| February Cheapest | Typical prices: HK$680–2,050 |
|---|---|
| June Most expensive | Typical prices: HK$1,300–2,400 |
Popular airlines from St. Louis to Denver
Popularity is based on the number of weekly nonstop and connecting flights the airline operates. Connecting flights do not include interline routes.
Flight suggestions are based on an airline's cheapest round-trip fares from St. Louis to Denver in the next 3 months. Prices include required taxes + fees for one adult. Optional charges and bag fees may apply.
Typical prices are based on fares observed in the past year for one-week round trips with the same origin, destination, and airline.
- SouthwestNonstopfrom HK$1,377Typical price: HK$1,600–3,05042 weekly nonstop flightsSTL - DENEvery day1242 weekly connecting flightsSTL - DENEvery day
- UnitedNonstopfrom HK$1,377Typical price: HK$1,650–3,55014 weekly nonstop flightsSTL - DENEvery day334 weekly connecting flightsSTL - DENEvery day
- FrontierNonstopfrom HK$537Typical price: HK$850–2,4004 weekly nonstop flightsSTL - DENEvery Mon, Wed, Fri, Sat55 weekly connecting flightsSTL - DENEvery day
- Americanfrom HK$1,567Typical price: HK$1,750–3,850237 weekly connecting flightsSTL - DENEvery day
- Deltafrom HK$1,528Typical price: HK$1,800–4,300216 weekly connecting flightsSTL - DENEvery day
- Alaskafrom HK$2,428Typical price: HK$3,400–7,00021 weekly connecting flightsSTL - DENEvery day
Popular airports near St. Louis
Distance and driving time are relative to the city center. Airports are listed based on distance from St. Louis center and popularity with travelers.
- St. Louis Lambert International Airport (STL)St. LouisUnited States22 min20 km
- General Wayne A. Downing Peoria International Airport (PIA)PeoriaUnited States2 hr 35 min230 km
- MidAmerica St. Louis Airport (BLV)BellevilleUnited States35 min32 km
- Indianapolis International Airport (IND)IndianapolisUnited States3 hr 29 min357 km
Popular airports near Denver
Distance and driving time are relative to the city center. Airports are listed based on distance from Denver center and popularity with travelers.
- Denver International Airport (DEN)DenverUnited States39 min30 km
- Colorado Springs Airport (COS)Colorado SpringsUnited States1 hr 27 min106 km
- Centennial Airport (APA)DenverUnited States28 min22 km
- Eagle County Regional Airport (EGE)VailUnited States2 hr 19 min165 km
Frequently asked questions about flying from St. Louis to Denver
The cheapest flights from St. Louis to Denver are usually in February. Typical ticket prices in February range from HK$680 to HK$2,050.
The cheapest round-trip flight from St. Louis to Denver recently found on Google Flights was with Frontier from HK$537. The cheapest one-way flight was with Frontier from HK$226.
Some of the cheapest round-trip deals we found with different airlines:
Some of the cheapest round-trip deals we found with different airlines:
- The cheapest Southwest flight from St. Louis to Denver is HK$1,377, flying from Jan 24 to Jan 26.
- The cheapest United flight from St. Louis to Denver is HK$1,377, flying from Jan 24 to Jan 26.
- The cheapest Frontier flight from St. Louis to Denver is HK$537, flying from Jan 31 to Feb 2.
- The cheapest American flight from St. Louis to Denver is HK$1,567, flying from Jan 24 to Jan 26.
- The cheapest Delta flight from St. Louis to Denver is HK$1,528, flying from Jan 24 to Jan 26.
- The cheapest Alaska flight from St. Louis to Denver is HK$2,428, flying from Jan 30 to Feb 2.
The cheapest round-trip flight from St. Louis to Denver starts at HK$537 from Sat, Jan 31 to Mon, Feb 2. The cheapest one-way flight starts at HK$226 and departs on Wed, Feb 25.
2 hr 20 min is the shortest flight time from St. Louis to Denver.
Denver’s mild summer months (Jun–Aug) are a popular time for visitors exploring the city and nearby national parks. The ski season runs through winter (Nov–Mar). Major events include the National Western Stock Show & Rodeo (Jan) and A Taste of Colorado (Sep) food and arts festival.
It's easy to use Google Flights to find the cheapest days to fly from St. Louis to Denver.
Just click the Departure label near the top of the page to open the calendar. Choose a start date and a return date to see how the round-trip fare changes on those specific days.
Adjust the trip type to see one-way fares. The cheapest available flights are highlighted and easy to spot. Once you settle on dates, click the Search button to see flight options and book the deal.
You can also turn on price tracking to get alerts if the price changes for a route or flight.
Just click the Departure label near the top of the page to open the calendar. Choose a start date and a return date to see how the round-trip fare changes on those specific days.
Adjust the trip type to see one-way fares. The cheapest available flights are highlighted and easy to spot. Once you settle on dates, click the Search button to see flight options and book the deal.
You can also turn on price tracking to get alerts if the price changes for a route or flight.
What counts as the best airline for your flights from St. Louis to Denver really depends on your individual needs. You may have a favorite carrier or a loyalty program you like, but price, convenience, and airports served also come into play. Flexibility and booking terms – Can you change flights if you want to stay longer or get a refund if you have to postpone your trip? – are also factors that help determine which airline is best to fly from St. Louis to Denver.
In terms of nonstop flights, Southwest is the most popular. Southwest offers 42 nonstop flights and 1,242 connecting flights per week. Southwest flies from St. Louis Lambert International Airport (STL) to Denver International Airport (DEN).
Other popular airlines flying from St. Louis to Denver are:
In terms of nonstop flights, Southwest is the most popular. Southwest offers 42 nonstop flights and 1,242 connecting flights per week. Southwest flies from St. Louis Lambert International Airport (STL) to Denver International Airport (DEN).
Other popular airlines flying from St. Louis to Denver are:
- United offers 14 nonstop flights and 334 connecting flights per week. United flies from St. Louis Lambert International Airport (STL) to Denver International Airport (DEN).
- Frontier offers 4 nonstop flights and 55 connecting flights per week. Frontier flies from St. Louis Lambert International Airport (STL) to Denver International Airport (DEN).
- American offers 237 connecting flights per week. American flies from St. Louis Lambert International Airport (STL) to Denver International Airport (DEN).
- Delta offers 216 connecting flights per week. Delta flies from St. Louis Lambert International Airport (STL) to Denver International Airport (DEN).
- Alaska offers 21 connecting flights per week. Alaska flies from St. Louis Lambert International Airport (STL) to Denver International Airport (DEN).
The cheapest round-trip flight from St. Louis to Denver recently found on Google Flights was with Frontier from HK$537. The cheapest one-way flight was with Frontier from HK$226.
Some of the cheapest round-trip deals we found with different airlines:
Some of the cheapest round-trip deals we found with different airlines:
- The cheapest Southwest flight from St. Louis to Denver is HK$1,377, flying from Jan 24 to Jan 26.
- The cheapest United flight from St. Louis to Denver is HK$1,377, flying from Jan 24 to Jan 26.
- The cheapest Frontier flight from St. Louis to Denver is HK$537, flying from Jan 31 to Feb 2.
- The cheapest American flight from St. Louis to Denver is HK$1,567, flying from Jan 24 to Jan 26.
- The cheapest Delta flight from St. Louis to Denver is HK$1,528, flying from Jan 24 to Jan 26.
- The cheapest Alaska flight from St. Louis to Denver is HK$2,428, flying from Jan 30 to Feb 2.
Southwest, United and Frontier fly direct from St. Louis to Denver.
- There are 42 Southwest direct flights from St. Louis to Denver per week. Flights are available every day.
- There are 14 United direct flights from St. Louis to Denver per week. Flights are available every day.
- There are 4 Frontier direct flights from St. Louis to Denver per week. Flights are available on Monday, Wednesday, Friday and Saturday.
The cheapest last-minute deal between St. Louis and Denver at price HK$2,280 is offered by Frontier from Sat, Dec 20 to Mon, Dec 22.
Southwest, United and Frontier fly direct from St. Louis to Denver.
- There are 42 Southwest direct flights from St. Louis to Denver per week. Flights are available every day.
- There are 14 United direct flights from St. Louis to Denver per week. Flights are available every day.
- There are 4 Frontier direct flights from St. Louis to Denver per week. Flights are available on Monday, Wednesday, Friday and Saturday.
There are direct flights from St. Louis to Denver on a daily basis.
The cheapest direct (nonstop) round-trip flights between St. Louis and Denver start at HK$537 from Sat, Jan 31 to Mon, Feb 2 with Frontier.
It's easy to find nonstop flights with Google Flights! Once you've searched for flights from St. Louis to Denver, just select the nonstop flights only option in the 'Stops’ filter in the search form and view all available direct flights and their prices.
The cheapest business class round-trip flights between St. Louis and Denver start at HK$3,478 from Sat, Jan 24 to Mon, Jan 26 with United.
The cheapest economy class round-trip flights between St. Louis and Denver start at HK$537 from Sat, Jan 31 to Mon, Feb 2.
To book business class trips from St. Louis to Denver, look for the default Economy selection at the top, and change it to your desired cabin class such as Premium Economy, Business Class, or First Class. You can then select your departure and arrival dates, consider available options, and book your business travel.
You can also adjust the trip type to view one-way fares.
You can also adjust the trip type to view one-way fares.
The best last-minute getaway deal for the next weekend between St. Louis and Denver starts at HK$2,280 from Sat, Dec 20 to Mon, Dec 22 with Frontier.
The cheapest last-minute deal between St. Louis and Denver at price HK$2,280 is offered by Frontier from Sat, Dec 20 to Mon, Dec 22.
To find last-minute flight deals from St. Louis to Denver, start by entering the city names, select the desired departure and return dates, and hit the Search button to view flight options.
You can check for last-minute flights for the same day or adjust the trip type to see one-way fares.
You can check for last-minute flights for the same day or adjust the trip type to see one-way fares.
Search more flights
Popular trips from St. Louis
These suggestions are based on the cheapest fares to popular destinations in the next six months.
Prices include required taxes + fees for 1 adult. Optional charges and bag fees may apply.
- SeattleHK$1,815Jan 8 — Jan 121 stop7 hr 50 minAmerican
- LondonHK$4,861Jan 30 — Feb 12 stops11 hr 6 minBrussels Airlines, United
- OrlandoHK$537Jan 10 — Jan 12Nonstop2 hr 16 minFrontier
- Las VegasHK$763Jan 29 — Feb 2Nonstop3 hr 48 minFrontier
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