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Aurora

$69+ 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 5/1. Fares are subject to change and may not be available on all flights or dates of travel.
STL — DEN
Nis 5 — Nis 121
Cmt 4/5
Cmt 4/12
1 adult, Economy
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Cheapflights Tip: The best prices from Lambert-St Louis to Aurora are usually found in April or May, booked 46 days in advance, depart on a Friday or Wednesday and return on a Wednesday

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 Mart 31, 2025.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$115
(Cheapflightsfares)

One-way from

$69
(Frontier)

Popular in

March

Cheapest in

April

Average price

$307
Provider with most accurate pricing for Lambert-St Louis-Denver Intl flight deals.
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Provider most trusted by Cheapflights users for Lambert-St Louis-Denver Intl flights.
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From Lambert-St Louis to Aurora
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One-way flight from Lambert-St Louis to Aurora
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Highest demand for flights based on searches. 16% potential increase in price ($35 potential increase over avg. RT price).
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Cheapest flight prices on average. 6% potential price decrease ($12 potential savings vs. average RT price).
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Average for round-trip flights in March 2025
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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 Mart 31, 2025.

This Cheapflightsfares deal was found by Cheapflights users on 3/30. 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 Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Cmt 5/38:15 pmSTL - DEN
Nonstop2h 33mFrontier
Cmt 5/106:50 amDEN - STL
Nonstop2h 09mFrontier
Deal found 3/30$115
This Southwest deal was found by Cheapflights users on 3/30. 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.
Sal 4/294:45 pmSTL - DEN
Nonstop2h 25mSouthwest
Sal 5/61:15 pmDEN - STL
Nonstop2h 00mSouthwest
Deal found 3/30$197
This American Airlines deal was found by Cheapflights users on 3/30. 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.
Sal 4/295:00 amSTL - DEN
1 stop9h 28mAmerican Airlines
Çar 4/305:26 pmDEN - STL
1 stop5h 07mAmerican Airlines
Deal found 3/30$199
This United Airlines deal was found by Cheapflights users on 3/31. 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.
Sal 4/294:45 pmSTL - DEN
Nonstop2h 29mUnited Airlines
Çar 4/306:44 pmDEN - STL
Nonstop2h 06mUnited Airlines
Deal found 3/31$214
This Delta deal was found by Cheapflights users on 3/30. 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.
Pzt 4/287:40 amSTL - DEN
1 stop6h 16mDelta
Sal 5/612:55 amDEN - STL
1 stop7h 05mDelta
Deal found 3/30$217
This CheapOair deal was found by Cheapflights users on 3/30. 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.
Cum 6/207:24 pmSTL - DEN
Nonstop2h 27mMultiple Airlines
Per 6/2610:15 amDEN - STL
1 stop24h 21mMultiple Airlines
Deal found 3/30$239

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 Mart 31, 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

Cmt 5/3

8:15 pm-9:48 pm

Nonstop2h 33m

Denver Intl

Cmt 5/10

6:50 am-9:59 am

Nonstop2h 09m

$115

St. LouisDenver

STL - DEN

STLDEN

Lambert-St Louis

Sal 4/29

4:45 pm-6:10 pm

Nonstop2h 25m

Denver Intl

Sal 5/6

1:15 pm-4:15 pm

Nonstop2h 00m

$197

St. LouisDenver

STL - DEN

STLDEN

Lambert-St Louis

Sal 4/29

7:19 am-1:28 pm

1 stop7h 09m

Denver Intl

Cmt 5/3

7:20 am-2:53 pm

1 stop6h 33m

$199

St. LouisDenver

STL - DEN

STLDEN

Lambert-St Louis

Pzt 4/28

7:40 am-12:56 pm

1 stop6h 16m

Denver Intl

Sal 5/6

12:55 am-9:00 am

1 stop7h 05m

$217

St. LouisDenver

STL - DEN

STLDEN

Lambert-St Louis

Cmt 5/3

4:45 pm-6:15 pm

Nonstop2h 30m

Denver Intl

Cmt 5/10

6:00 am-12:19 pm

1 stop5h 19m

$238

St. LouisDenver

STL - DEN

STLDEN

Lambert-St Louis

Cum 6/20

7:24 pm-8:51 pm

Nonstop2h 27m

Denver Intl

Per 6/26

10:15 am-11:36 am

1 stop24h 21m

$239

St. LouisDenver

STL - DEN

STLDEN

Lambert-St Louis

Per 5/1

4:07 pm-5:41 pm

Nonstop2h 34m

$69

St. LouisDenver

STL - DEN

STLDEN

Lambert-St Louis

Sal 7/1

4:45 pm-6:09 pm

Nonstop2h 24m

$99

St. LouisDenver

STL - DEN

STLDEN

Lambert-St Louis

Sal 4/29

7:04 am-1:49 pm

1 stop7h 45m

$100

St. LouisDenver

STL - DEN

STLDEN

Lambert-St Louis

Paz 5/25

10:20 am-5:27 pm

1 stop8h 07m

$103

Flights are sorted by cheapest round-trip flights first.

Deals found on 3/31

Showing 1-10 of 14 results
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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 March 28, 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 46 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 Mart 31, 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 Saturday 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 Mart 31, 2025.

The most flights from STL to 9UR are scheduled on a Sunday (14 on average). You will have fewer flight options on Tuesday, which is when the least amount of flights are scheduled (4 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 Mart 31, 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
9,818 reviews

Boarding

8.2

Overall

8.0

Crew

8.5

Entertainment

7.1

Comfort

7.9

Food

7.1

Reviews

1 / 20
10.0
Excellent

Cheri,Jan 2025

FAT - SEA

Very friendly. I really liked that they had water for us in cartons not plastic. Impressed with Alaska Airlines, First time I had flown them
Alaska Airlines
8.0
Very good
9,818 reviews
Alaska Airlines
8.0
Very good
9,818 reviews

Boarding

8.2

Overall

8.0

Crew

8.5

Entertainment

7.1

Comfort

7.9

Food

7.1

Reviews

1 / 20
10.0
Excellent

Cheri,Jan 2025

FAT - SEA

Very friendly. I really liked that they had water for us in cartons not plastic. Impressed with Alaska Airlines, First time I had flown them
Southwest
8.0
Very good
4,275 reviews
Alaska Airlines
8.0
Very good
9,818 reviews

Boarding

8.2

Overall

8.0

Crew

8.5

Entertainment

7.1

Comfort

7.9

Food

7.1

Reviews

1 / 20
10.0
Excellent

Cheri,Jan 2025

FAT - SEA

Very friendly. I really liked that they had water for us in cartons not plastic. Impressed with Alaska Airlines, First time I had flown them
Delta
8.0
Very good
7,899 reviews
Alaska Airlines
8.0
Very good
9,818 reviews

Boarding

8.2

Overall

8.0

Crew

8.5

Entertainment

7.1

Comfort

7.9

Food

7.1

Reviews

1 / 20
10.0
Excellent

Cheri,Jan 2025

FAT - SEA

Very friendly. I really liked that they had water for us in cartons not plastic. Impressed with Alaska Airlines, First time I had flown them
United Airlines
7.4
Good
8,614 reviews
Alaska Airlines
8.0
Very good
9,818 reviews

Boarding

8.2

Overall

8.0

Crew

8.5

Entertainment

7.1

Comfort

7.9

Food

7.1

Reviews

1 / 20
10.0
Excellent

Cheri,Jan 2025

FAT - SEA

Very friendly. I really liked that they had water for us in cartons not plastic. Impressed with Alaska Airlines, First time I had flown them
American Airlines
7.2
Good
10,000 reviews
Alaska Airlines
8.0
Very good
9,818 reviews

Boarding

8.2

Overall

8.0

Crew

8.5

Entertainment

7.1

Comfort

7.9

Food

7.1

Reviews

1 / 20
10.0
Excellent

Cheri,Jan 2025

FAT - SEA

Very friendly. I really liked that they had water for us in cartons not plastic. Impressed with Alaska Airlines, First time I had flown them

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 8 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 209 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 $69. However, be on the lookout for offers from Delta and American Airlines, 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 Air Canada (86%), Southwest (85%) or United Airlines (85%) 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 $819 for a flight from St. Louis to Aurora. The cheapest flight overall is $69 while the most popular route, (Lambert-St Louis - Denver Intl) is currently priced at $142.

  • 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

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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 Mart 31, 2025.
AirlineCheapestAverageFlexibilityOn-time
FrontierCheapest$45Average$114FlexibilityNo cancel feeOn-time62%
DeltaCheapest$128Average$291FlexibilityNo cancel feeOn-timeN/A
United AirlinesCheapest$153Average$398FlexibilityNo cancel feeOn-time69%
SouthwestCheapest$178Average$339FlexibilityNo cancel feeOn-time63%
American AirlinesCheapest$192Average$326FlexibilityNo cancel feeOn-time71%
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