HomeSearch by dateVacation packagesHotelsFlight dealsCar rentalTravel tips & news
Aurora

$83+ Cheap flights from St. Louis (STL) to Aurora, CO

This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 7/9. Fares are subject to change and may not be available on all flights or dates of travel.
STL — DEN
Jun 17 — Jun 241
Tue 6/17
Tue 6/24
1 adult, Economy
We work with more than 300 partners to bring you better travel deals

Find cheap flights from St. Louis to Aurora with Cheapflights

1. Tell us where you want to go

Enter your travel information like dates, passengers, trip type (one-way or round trip), and preferred cabin class then click “Find deals”

2. Select your favorite providers

We find the providers serving your travel needs. Choose up to four travel providers to compare side-by-side for flights, hotels, or car rentals.

3. Compare prices and book

Review each provider’s pricing and select the best option for you! Book through your favorite provider’s website for a seamless experience.

Cheapflights Tip: The best prices from Lambert-St Louis to Aurora are usually found in September or August, booked 23 days in advance, depart on a Wednesday or Friday and return on a Saturday

Cheap flight deals from St. Louis to Aurora

Keep the following information in mind while searching for St. Louis to Aurora flight deals. Data was last updated June 12, 2025.

Round-trip from

$139
(Priceline)

One-way from

$84
(Frontier)

Popular in

March

Cheapest in

September

Average price

$261
From Lambert-St Louis to Aurora
Search Deals
One-way flight from Lambert-St Louis to Aurora
Search Deals
Highest demand for flights based on searches. 16% potential increase in price ($40 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 5% potential price decrease ($12 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in June 2025
Search Deals

Find flight deals from St. Louis to Aurora

Cheapest flights from St. Louis to Aurora
Explore the most affordable flight options available from St. Louis to Aurora. Find the lowest fares from popular airlines and budget airlines, with prices last updated on June 12, 2025.

This Priceline deal was found by Cheapflights users on 6/12. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Priceline is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 7/97:29 pmSTL - DEN
Nonstop2h 29mFrontier
Wed 7/166:00 amDEN - STL
Nonstop2h 11mFrontier
Deal found 6/12$139
This Southwest deal was found by Cheapflights users on 6/10. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 8/46:45 pmSTL - DEN
Nonstop2h 20mSouthwest
Thu 8/145:30 amDEN - STL
Nonstop2h 00mSouthwest
Deal found 6/10$157
This American Airlines deal was found by Cheapflights users on 6/10. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 8/1212:20 pmSTL - DEN
1 stop6h 43mAmerican Airlines
Sat 8/1611:59 pmDEN - STL
1 stop7h 07mAmerican Airlines
Deal found 6/10$182
This United Airlines deal was found by Cheapflights users on 6/10. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 8/128:00 amSTL - DEN
1 stop5h 32mUnited Airlines
Sat 8/161:25 pmDEN - STL
Nonstop2h 06mUnited Airlines
Deal found 6/10$187
This Delta deal was found by Cheapflights users on 6/10. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 7/237:45 amSTL - DEN
1 stop8h 15mDelta
Fri 7/2512:59 amDEN - STL
1 stop7h 02mDelta
Deal found 6/10$197

Cheapflights Fare Finder

Customize your flight search to find flights from St. Louis to Aurora that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated June 12, 2025.
Use the filters below to find and compare flights from St. Louis to Aurora that are best for you.

Fly from

St. Louis

Fly to

Aurora

Route

Depart

Return

Price

St. LouisDenver

STL - DEN

STLDEN

Lambert-St Louis

Wed 7/9

7:29 pm-8:58 pm

Nonstop2h 29m

Denver Intl

Wed 7/16

6:00 am-9:11 am

Nonstop2h 11m

$139

St. LouisDenver

STL - DEN

STLDEN

Lambert-St Louis

Mon 8/4

6:45 pm-8:05 pm

Nonstop2h 20m

Denver Intl

Thu 8/14

5:30 am-8:30 am

Nonstop2h 00m

$157

St. LouisDenver

STL - DEN

STLDEN

Lambert-St Louis

Tue 8/12

12:20 pm-6:03 pm

1 stop6h 43m

Denver Intl

Sat 8/16

11:59 pm-8:06 am

1 stop7h 07m

$182

St. LouisDenver

STL - DEN

STLDEN

Lambert-St Louis

Tue 8/12

5:31 pm-11:22 pm

1 stop6h 51m

Denver Intl

Sat 8/16

5:37 pm-8:45 pm

Nonstop2h 08m

$187

St. LouisDenver

STL - DEN

STLDEN

Lambert-St Louis

Wed 7/23

7:45 am-3:00 pm

1 stop8h 15m

Denver Intl

Fri 7/25

12:59 am-9:01 am

1 stop7h 02m

$197

St. LouisDenver

STL - DEN

STLDEN

Lambert-St Louis

Sun 6/29

6:12 am-8:39 am

1 stop27h 27m

Denver Intl

Thu 7/3

6:13 pm-11:30 am

1 stop16h 17m

$325

St. LouisDenver

STL - DEN

STLDEN

Lambert-St Louis

Wed 7/9

7:29 pm-8:58 pm

Nonstop2h 29m

$83

St. LouisDenver

STL - DEN

STLDEN

Lambert-St Louis

Sat 7/26

5:15 am-6:52 am

Nonstop2h 37m

$89

St. LouisDenver

STL - DEN

STLDEN

Lambert-St Louis

Wed 7/23

7:45 am-3:00 pm

1 stop8h 15m

$99

St. LouisDenver

STL - DEN

STLDEN

Lambert-St Louis

Sat 7/12

7:40 am-8:56 pm

1 stop14h 16m

$118

Flights are sorted by cheapest round-trip flights first.

Deals found on 6/12

Showing 1-10 of 14 results
1
2

Best time to book a flight from St. Louis to Aurora

Have a flexible travel schedule? Discover the best time to fly to Aurora from St. Louis with our price prediction graph.
Estimated round-trip price
Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.

Cheapflights Insights

Everything you need to know about your flight from St. Louis to Aurora

How far ahead should I book a flight from St. Louis to Aurora?

Use this chart to determine the optimal time to book a round-trip flight from St. Louis to Aurora. Price data was last updated on June 9, 2025.

The price you pay for your flight from St. Louis to Aurora may vary depending on when you book. For the best chance of a lower fare, look to book 23 days in advance of your trip. Fares are likely to increase a fortnight or so before your departure date.

What is the cheapest month to book a flight from St. Louis to Aurora?

Currently, October is the cheapest month in which you can book a flight from St. Louis to Aurora (average of $197). Flying from St. Louis to Aurora in March is currently the most expensive (average of $278). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

What is the cheapest time of day to fly from STL to 9UR?

Find hourly flight availability from St. Louis to Aurora. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated June 12, 2025.

When flying from St. Louis to Aurora, the time of day you decide to fly out makes little to no difference towards the overall price you’ll pay on tickets.

What is the cheapest day to fly from St. Louis to Aurora?

Use this chart to determine the cheapest time to fly round-trip from St. Louis to Aurora. Price data was last updated on June 30, 2024.

Travelers seeking maximum savings on their St. Louis to Aurora flight should consider departing on Tuesday evenings when fares are most often at their lowest. Monday mornings flights should be avoided if possible as fares are typically the most expensive at this time.

Weekly flight availability from St. Louis to Aurora

Explore weekly flight availability from St. Louis to Aurora. Discover flights operating on different days of the week, giving you the flexibility to choose a travel day that best fits your plans. Compare info to find the most convenient option for your journey. Data last updated June 12, 2025.

The most flights from STL to 9UR are scheduled on a Monday (18 on average). You will have fewer flight options on Saturday, which is when the least amount of flights are scheduled (6 on average).

Rainfall in Aurora by month

Plan your trip to Aurora by taking into account the average rainfall totals by month.

In terms of precipitation, rainfall in Aurora ranges from 0.5 - 2.3 inches per month. May is typically the wettest month, when rainfall can reach 2.3 in. January is typically the driest time to visit Aurora when rainfall is around 0.5 in.

Temperature in Aurora by month

Plan your trip to Aurora by taking into account the average temperature totals by month.

If weather is an important factor for your trip to Aurora, use this chart to help with planning. For those seeking warmer temperatures, July is the ideal time of year to visit, when temperatures reach an average of 73.4 F. Travelers looking to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 30.2 F).

Reviews of airlines servicing Aurora

Get insights into the airlines that provide service to Aurora. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to Aurora. Reviews last updated June 12, 2025.
Get a feel of what it's like to fly with Alaska Airlines, Southwest and Delta from St. Louis to Aurora by reading reviews from past customers. You can also see how each airline stacks up in terms of entertainment options, comfort, food, crew/service, and boarding process.
Alaska Airlines
8.0
Very good
10,000 reviews

Food

7.1

Entertainment

7.1

Overall

8.0

Boarding

8.1

Comfort

7.8

Crew

8.5

Reviews

1 / 20
10.0
Excellent

James,Apr 2025

LAX - SFO

Good flight except the uncontrollable cold air from the ceiling.
Alaska Airlines
8.0
Very good
10,000 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Food

7.1

Entertainment

7.1

Overall

8.0

Boarding

8.1

Comfort

7.8

Crew

8.5

Reviews

1 / 20
10.0
Excellent

James,Apr 2025

LAX - SFO

Good flight except the uncontrollable cold air from the ceiling.
Southwest
8.0
Very good
4,287 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Food

7.1

Entertainment

7.1

Overall

8.0

Boarding

8.1

Comfort

7.8

Crew

8.5

Reviews

1 / 20
10.0
Excellent

James,Apr 2025

LAX - SFO

Good flight except the uncontrollable cold air from the ceiling.
Delta
8.0
Very good
7,950 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Food

7.1

Entertainment

7.1

Overall

8.0

Boarding

8.1

Comfort

7.8

Crew

8.5

Reviews

1 / 20
10.0
Excellent

James,Apr 2025

LAX - SFO

Good flight except the uncontrollable cold air from the ceiling.
United Airlines
7.4
Good
8,790 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Food

7.1

Entertainment

7.1

Overall

8.0

Boarding

8.1

Comfort

7.8

Crew

8.5

Reviews

1 / 20
10.0
Excellent

James,Apr 2025

LAX - SFO

Good flight except the uncontrollable cold air from the ceiling.
American Airlines
7.2
Good
10,000 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Food

7.1

Entertainment

7.1

Overall

8.0

Boarding

8.1

Comfort

7.8

Crew

8.5

Reviews

1 / 20
10.0
Excellent

James,Apr 2025

LAX - SFO

Good flight except the uncontrollable cold air from the ceiling.

Related info for your journey

Find useful and relevant information for your journey from St. Louis to Aurora. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • What airport do you fly from for flights from St. Louis to Aurora?

    If you book a flight to Aurora from St. Louis, you will be flying from Lambert-St Louis, which is the city’s only airport. Lambert-St Louis (STL) is located 12.7 mi from the center of St. Louis. There are 13 flights from Lambert-St Louis to Aurora per day from 5 different airlines.

  • How popular is this St. Louis to Aurora flight route?

    Flights from Lambert-St Louis to Aurora have been viewed 192 times in the past calendar month.

  • What are the cheapest airlines to fly from St. Louis to Aurora one-way?

    The cheapest airline one-way is Frontier, with whom users have recently found tickets for as low as $84. However, be on the lookout for offers from United Airlines and Delta, as they are both options that can get you from St. Louis to Aurora for a low price.

  • What are the most reliable airlines from St. Louis to Aurora?

    Consider SkyWest Airlines (95%), United Airlines (79%) or Air Canada (74%) when booking your flight. These represent the most reliable airlines when flying from St. Louis to Aurora.

  • What are the cheapest flights from St. Louis to Aurora?

    On average you can expect to pay $865 for a flight from St. Louis to Aurora. The cheapest flight overall is $76 while the most popular route, (Lambert-St Louis - Denver Intl) is currently priced at $146.

  • Can I find deals for flights from St. Louis to Aurora that include hotel bookings?

    Yes. In addition to deals on St. Louis to Aurora flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from St. Louis to Aurora?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from St. Louis to Aurora.

  • Can I find deals for business class flights from St. Louis to Aurora?

    Yes. Cheapflights offers flight deals from St. Louis to Aurora by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

  • What is the cheapest month to book a flight from St. Louis to Aurora?

    Currently, October is the cheapest month in which you can book a flight from St. Louis to Aurora (average of $197). Flying from St. Louis to Aurora in March is currently the most expensive (average of $278). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

See more FAQs

Browse thousands of different options on Cheapflights for your next trip

Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.

Alternative routes for St. Louis to Aurora

See prices for flight routes from nearby airports that may be better suited for you.
St. Louis to Denver flights
Kansas City to Denver flights
Springfield to Denver flights
St. Louis to Colorado Springs flights
Kansas City to Grand Junction flights
Kansas City to Colorado Springs flights
Springfield to Colorado Springs flights
St. Louis to Montrose flights
St. Louis to Durango flights
Columbia to Denver flights
Joplin to Denver flights
St. Louis to Grand Junction flights
Kansas City to Durango flights
Kansas City to Hayden flights
St. Louis to Vail flights
St. Louis to Aspen flights
St. Louis to Gunnison flights
Kansas City to Aspen flights
St. Louis to Hayden flights
Cape Girardeau to Denver flights
Branson to Denver flights
Kansas City to Cortez flights
Columbia to Colorado Springs flights
Springfield to Hayden flights
St. Louis to Cortez flights
Kansas City to Alamosa flights
Joplin to Colorado Springs flights
Columbia to Aspen flights

Top 5 airlines flying from St. Louis to Aurora

Discover the top 5 airlines that operate flights from St. Louis to Aurora. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated June 12, 2025.
AirlineCheapestAverageFlexibilityOn-time
FrontierCheapest$45Average$117FlexibilityNo cancel feeOn-time62%
DeltaCheapest$128Average$291FlexibilityNo cancel feeOn-timeN/A
United AirlinesCheapest$152Average$394FlexibilityNo cancel feeOn-time69%
SouthwestCheapest$187Average$334FlexibilityNo cancel feeOn-time63%
American AirlinesCheapest$192Average$305FlexibilityNo cancel feeOn-time71%

100% Free

Cheapflights is completely free to use, so you can start saving the moment you arrive.

Book with Flexibility

Our users can plan ahead with confidence and find flights with no change fees

Travel Smart

Millions of people come to us for their flight needs every year. We help make travel planning easy by providing useful insights and data-driven graphs that can inform your decisions.