HomeSearch by dateVacation packagesHotelsFlight dealsCar rentalTravel tips & news
Aurora

$33+ 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 4/26. Fares are subject to change and may not be available on all flights or dates of travel.
STL — DEN
Feb 25 — Mar 41
Tue 2/25
Tue 3/4
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.

The best prices from Lambert-St Louis to Aurora are usually found in April or May, booked 23 days in advance, depart on a Friday or Wednesday and return on a Tuesday

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 February 20, 2025.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$64
(Kiwi.com)

One-way from

$33
(Kiwi.com)

Popular in

March

Cheapest in

April

Average price

$197
Provider with most accurate pricing for Lambert-St Louis-Denver Intl flight deals.
Search Deals
Provider most trusted by Cheapflights users for Lambert-St Louis-Denver Intl flights.
Search Deals
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. 8% potential increase in price ($16 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 4% potential price decrease ($8 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in February 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 February 20, 2025.

This Kiwi.com deal was found by Cheapflights users on 2/20. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 4/26:51 pmSTL - DEN
Nonstop2h 31mFrontier
Sat 4/56:00 amDEN - STL
Nonstop2h 06mFrontier
Deal found 2/20$64
This CheapOair deal was found by Cheapflights users on 2/20. 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 CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 3/37:04 pmSTL - DEN
Nonstop2h 28mMultiple Airlines
Fri 3/76:50 pmDEN - STL
1 stop15h 44mMultiple Airlines
Deal found 2/20$208
This Delta deal was found by Cheapflights users on 2/19. 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.
Tue 4/15:35 pmSTL - DEN
1 stop6h 29mDelta
Tue 4/86:25 amDEN - STL
1 stop7h 09mDelta
Deal found 2/19$217
This American Airlines deal was found by Cheapflights users on 2/20. 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.
Fri 4/251:48 pmSTL - DEN
1 stop8h 28mAmerican Airlines
Fri 4/2511:59 pmDEN - STL
1 stop7h 31mAmerican Airlines
Deal found 2/20$231
This Southwest deal was found by Cheapflights users on 2/19. 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.
Thu 4/32:05 pmSTL - DEN
Nonstop2h 25mSouthwest
Mon 4/78:00 amDEN - STL
Nonstop2h 05mSouthwest
Deal found 2/19$251
This United Airlines deal was found by Cheapflights users on 2/19. 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 4/18:48 amSTL - DEN
Nonstop2h 30mUnited Airlines
Tue 4/86:44 pmDEN - STL
Nonstop2h 06mUnited Airlines
Deal found 2/19$258

Find flights from St. Louis to Aurora within your budget

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 February 20, 2025.

Fly from

St. Louis

Fly to

Aurora

Route

Depart

Return

Price

St. LouisDenver

STL - DEN

STLDEN

Lambert-St Louis

Wed 4/2

6:51 pm-8:22 pm

Nonstop2h 31m

Denver Intl

Sat 4/5

6:00 am-9:06 am

Nonstop2h 06m

$64

St. LouisDenver

STL - DEN

STLDEN

Lambert-St Louis

Mon 3/3

7:04 pm-8:32 pm

Nonstop2h 28m

Denver Intl

Fri 3/7

6:50 pm-11:34 am

1 stop15h 44m

$208

St. LouisDenver

STL - DEN

STLDEN

Lambert-St Louis

Tue 4/1

5:00 pm-10:31 pm

1 stop6h 31m

Denver Intl

Wed 4/9

12:15 pm-9:04 pm

1 stop7h 49m

$217

St. LouisDenver

STL - DEN

STLDEN

Lambert-St Louis

Fri 4/25

1:48 pm-9:16 pm

1 stop8h 28m

Denver Intl

Fri 4/25

11:59 pm-8:30 am

1 stop7h 31m

$231

St. LouisDenver

STL - DEN

STLDEN

Lambert-St Louis

Thu 4/3

2:05 pm-3:30 pm

Nonstop2h 25m

Denver Intl

Mon 4/7

8:00 am-11:05 am

Nonstop2h 05m

$251

St. LouisDenver

STL - DEN

STLDEN

Lambert-St Louis

Tue 4/1

8:48 am-10:18 am

Nonstop2h 30m

Denver Intl

Tue 4/8

6:44 pm-9:50 pm

Nonstop2h 06m

$258

St. LouisDenver

STL - DEN

STLDEN

Lambert-St Louis

Sat 4/26

6:58 pm-8:29 pm

Nonstop2h 31m

$33

St. LouisDenver

STL - DEN

STLDEN

Lambert-St Louis

Tue 4/29

4:45 pm-6:10 pm

Nonstop2h 25m

$99

St. LouisDenver

STL - DEN

STLDEN

Lambert-St Louis

Tue 4/29

5:34 pm-11:09 pm

1 stop6h 35m

$109

St. LouisDenver

STL - DEN

STLDEN

Lambert-St Louis

Mon 3/10

6:30 am-6:33 pm

1 stop13h 03m

$116

Flights are sorted by cheapest round-trip flights first.

Deals found on 2/20

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.

Travel insights for flights from St. Louis to Aurora

Get recent, data-driven insights about flights from St. Louis to Aurora including ideal travel times, pricing trends, and more.

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 February 14, 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 February 20, 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 May 12, 2024.

Travelers seeking maximum savings on their St. Louis to Aurora flight should consider departing on Wednesday 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 February 20, 2025.

The most flights from STL to 9UR are scheduled on a Monday (14 on average). You will have fewer flight options on Saturday, which is when the least amount of flights are scheduled (5 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 February 20, 2025.
Get a feel of what it's like to fly with Southwest, Alaska Airlines 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.
Southwest
8.1
Very good
4,411 reviews

Entertainment

7.6

Boarding

8.2

Food

7.1

Comfort

8.1

Overall

8.1

Crew

8.7

Reviews

1 / 20

2.0
Mediocre

Steven,Feb 2025

BZN - DEN

Bozeman Airport knows how to deal with snow. I saw many airlines leave with only small delays due to the foot of snow. Our plane was 4 hours delayed. I missed my connection in Denver with a 3.5 hour layover. Because of that, the best you Southwest could do was make me wait more hours, them send me to Chicago Midway, where I had to wait overnight, for 7 more hours until a flight to RSW was available. Nobody at Southwest told me that Midway shuts down after 8pm. Everything was closed. I had no idea. You just dumped me there. I am a 65 year old man and you dumped me in Midway without even a couch to lie on. I was awake 21 hours because of this. No, it was not an act of God. Other airlines were moving passengers out. It was incompetence Shame on you.

Southwest
8.1
Very good
4,411 reviews
Southwest
8.1
Very good
4,411 reviews

Entertainment

7.6

Boarding

8.2

Food

7.1

Comfort

8.1

Overall

8.1

Crew

8.7

Reviews

1 / 20

2.0
Mediocre

Steven,Feb 2025

BZN - DEN

Bozeman Airport knows how to deal with snow. I saw many airlines leave with only small delays due to the foot of snow. Our plane was 4 hours delayed. I missed my connection in Denver with a 3.5 hour layover. Because of that, the best you Southwest could do was make me wait more hours, them send me to Chicago Midway, where I had to wait overnight, for 7 more hours until a flight to RSW was available. Nobody at Southwest told me that Midway shuts down after 8pm. Everything was closed. I had no idea. You just dumped me there. I am a 65 year old man and you dumped me in Midway without even a couch to lie on. I was awake 21 hours because of this. No, it was not an act of God. Other airlines were moving passengers out. It was incompetence Shame on you.

Alaska Airlines
8.0
Very good
9,692 reviews
Southwest
8.1
Very good
4,411 reviews

Entertainment

7.6

Boarding

8.2

Food

7.1

Comfort

8.1

Overall

8.1

Crew

8.7

Reviews

1 / 20

2.0
Mediocre

Steven,Feb 2025

BZN - DEN

Bozeman Airport knows how to deal with snow. I saw many airlines leave with only small delays due to the foot of snow. Our plane was 4 hours delayed. I missed my connection in Denver with a 3.5 hour layover. Because of that, the best you Southwest could do was make me wait more hours, them send me to Chicago Midway, where I had to wait overnight, for 7 more hours until a flight to RSW was available. Nobody at Southwest told me that Midway shuts down after 8pm. Everything was closed. I had no idea. You just dumped me there. I am a 65 year old man and you dumped me in Midway without even a couch to lie on. I was awake 21 hours because of this. No, it was not an act of God. Other airlines were moving passengers out. It was incompetence Shame on you.

Delta
8.0
Very good
8,220 reviews
Southwest
8.1
Very good
4,411 reviews

Entertainment

7.6

Boarding

8.2

Food

7.1

Comfort

8.1

Overall

8.1

Crew

8.7

Reviews

1 / 20

2.0
Mediocre

Steven,Feb 2025

BZN - DEN

Bozeman Airport knows how to deal with snow. I saw many airlines leave with only small delays due to the foot of snow. Our plane was 4 hours delayed. I missed my connection in Denver with a 3.5 hour layover. Because of that, the best you Southwest could do was make me wait more hours, them send me to Chicago Midway, where I had to wait overnight, for 7 more hours until a flight to RSW was available. Nobody at Southwest told me that Midway shuts down after 8pm. Everything was closed. I had no idea. You just dumped me there. I am a 65 year old man and you dumped me in Midway without even a couch to lie on. I was awake 21 hours because of this. No, it was not an act of God. Other airlines were moving passengers out. It was incompetence Shame on you.

United Airlines
7.4
Good
8,766 reviews
Southwest
8.1
Very good
4,411 reviews

Entertainment

7.6

Boarding

8.2

Food

7.1

Comfort

8.1

Overall

8.1

Crew

8.7

Reviews

1 / 20

2.0
Mediocre

Steven,Feb 2025

BZN - DEN

Bozeman Airport knows how to deal with snow. I saw many airlines leave with only small delays due to the foot of snow. Our plane was 4 hours delayed. I missed my connection in Denver with a 3.5 hour layover. Because of that, the best you Southwest could do was make me wait more hours, them send me to Chicago Midway, where I had to wait overnight, for 7 more hours until a flight to RSW was available. Nobody at Southwest told me that Midway shuts down after 8pm. Everything was closed. I had no idea. You just dumped me there. I am a 65 year old man and you dumped me in Midway without even a couch to lie on. I was awake 21 hours because of this. No, it was not an act of God. Other airlines were moving passengers out. It was incompetence Shame on you.

American Airlines
7.2
Good
10,000 reviews
Southwest
8.1
Very good
4,411 reviews

Entertainment

7.6

Boarding

8.2

Food

7.1

Comfort

8.1

Overall

8.1

Crew

8.7

Reviews

1 / 20

2.0
Mediocre

Steven,Feb 2025

BZN - DEN

Bozeman Airport knows how to deal with snow. I saw many airlines leave with only small delays due to the foot of snow. Our plane was 4 hours delayed. I missed my connection in Denver with a 3.5 hour layover. Because of that, the best you Southwest could do was make me wait more hours, them send me to Chicago Midway, where I had to wait overnight, for 7 more hours until a flight to RSW was available. Nobody at Southwest told me that Midway shuts down after 8pm. Everything was closed. I had no idea. You just dumped me there. I am a 65 year old man and you dumped me in Midway without even a couch to lie on. I was awake 21 hours because of this. No, it was not an act of God. Other airlines were moving passengers out. It was incompetence Shame on you.

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 9 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 205 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 $33. However, be on the lookout for offers from Southwest 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 Frontier (93%), Air Canada (81%) or United Airlines (76%) 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 $625 for a flight from St. Louis to Aurora. The cheapest flight overall is $52 while the most popular route, (Lambert-St Louis - Denver Intl) is currently priced at $126.

  • 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 Montrose flights
Kansas City to Grand Junction flights
St. Louis to Colorado Springs flights
Kansas City to Colorado Springs flights
St. Louis to Gunnison flights
St. Louis to Vail flights
Springfield to Colorado Springs flights
Kansas City to Durango flights
Joplin to Denver flights
St. Louis to Durango flights
St. Louis to Aspen flights
Kansas City to Hayden flights
Columbia to Denver flights
Kansas City to Aspen flights
St. Louis to Hayden flights
St. Louis to Grand Junction flights
Branson to Denver flights
St. Louis to Cortez flights
Joplin to Colorado Springs flights
Columbia to Colorado Springs flights
Kansas City to Cortez flights
Springfield to Hayden flights
Kansas City to Alamosa flights
Columbia to Aspen flights
Cape Girardeau to Denver 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 February 20, 2025.
AirlineCheapestAverageFlexibilityOn-time
FrontierCheapest$45Average$115FlexibilityNo cancel feeOn-time62%
DeltaCheapest$131Average$291FlexibilityNo cancel feeOn-timeN/A
United AirlinesCheapest$150Average$362FlexibilityNo cancel feeOn-time69%
SouthwestCheapest$177Average$335FlexibilityNo cancel feeOn-time63%
American AirlinesCheapest$192Average$316FlexibilityNo 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.