$78+ 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 8/19. Fares are subject to change and may not be available on all flights or dates of travel.
STL — DEN
Jul 9 — Jul 161
Round-trip
1 adult, Economy
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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
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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 October or September, booked 35 days in advance, depart on a Wednesday or Saturday and return on a Friday
Cheap flight deals from St. Louis to Aurora
Cheapest
Best
Last-minute
One-way
Cheapest flights from St. Louis to AuroraExplore 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 9, 2026.
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 9, 2026.
This Cheapflightsfares deal was found by Cheapflights users on 6/5. 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.
Wed 7/18:08 pm
STL
- DEN
Nonstop2h 36m
Frontier
Wed 7/84:10 pm
DEN
- STL
Nonstop2h 13m
Frontier
Deal found 6/5![Frontier logo]()
$141
This Kiwi.com deal was found by Cheapflights users on 6/8. 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.
Thu 8/208:08 pm
STL
- DEN
Nonstop2h 36m
Frontier
Tue 8/254:12 pm
DEN
- STL
Nonstop2h 11m
Frontier
Deal found 6/8![Frontier logo]()
$142
This Cheapflightsfares deal was found by Cheapflights users on 6/5. 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.
Tue 7/288:08 pm
STL
- DEN
Nonstop2h 36m
Frontier
Mon 8/34:10 pm
DEN
- STL
Nonstop2h 13m
Frontier
Deal found 6/5![Frontier logo]()
$146
This Kiwi.com deal was found by Cheapflights users on 6/4. 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.
Tue 8/48:08 pm
STL
- DEN
Nonstop2h 36m
Frontier
Sat 8/84:10 pm
DEN
- STL
Nonstop2h 13m
Frontier
Deal found 6/4![Frontier logo]()
$150
This Super.com deal was found by Cheapflights users on 6/4. 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 Super.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 7/218:08 pm
STL
- DEN
Nonstop2h 36m
Frontier
Tue 7/284:10 pm
DEN
- STL
Nonstop2h 13m
Frontier
Deal found 6/4![Frontier logo]()
$156
This Kiwi.com deal was found by Cheapflights users on 6/4. 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.
Tue 9/18:08 pm
STL
- DEN
Nonstop2h 36m
Frontier
Tue 9/84:12 pm
DEN
- STL
Nonstop2h 11m
Frontier
Deal found 6/4![Frontier logo]()
$157
This Kiwi.com deal was found by Cheapflights users on 6/4. 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.
Tue 9/18:08 pm
STL
- DEN
Nonstop2h 36m
Frontier
Sun 9/64:12 pm
DEN
- STL
Nonstop2h 11m
Frontier
Deal found 6/4![Frontier logo]()
$159
This Kiwi.com deal was found by Cheapflights users on 6/4. 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.
Tue 9/18:08 pm
STL
- DEN
Nonstop2h 36m
Frontier
Sat 9/511:42 pm
DEN
- STL
1 stop16h 48m
Frontier
Deal found 6/4![Frontier logo]()
$160
This Kiwi.com deal was found by Cheapflights users on 6/6. 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.
Tue 7/288:08 pm
STL
- DEN
Nonstop2h 36m
Frontier
Wed 8/54:10 pm
DEN
- STL
Nonstop2h 13m
Frontier
Deal found 6/6![Frontier logo]()
$162
This Expedia deal was found by Cheapflights users on 6/7. 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 Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 7/18:08 pm
STL
- DEN
Nonstop2h 36m
Frontier
Wed 7/294:10 pm
DEN
- STL
Nonstop2h 13m
Frontier
Deal found 6/7![Frontier logo]()
$165
This Kiwi.com deal was found by Cheapflights users on 6/4. 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.
Mon 8/318:08 pm
STL
- DEN
Nonstop2h 36m
Frontier
Sat 9/511:42 pm
DEN
- STL
1 stop16h 48m
Frontier
Deal found 6/4![Frontier logo]()
$166
This Kiwi.com deal was found by Cheapflights users on 6/4. 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.
Sat 8/298:08 pm
STL
- DEN
Nonstop2h 36m
Frontier
Tue 9/84:12 pm
DEN
- STL
Nonstop2h 11m
Frontier
Deal found 6/4![Frontier logo]()
$167
Best flights from St. Louis to AuroraDiscover carefully curated flight deals from St. Louis to Aurora that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated June 9, 2026.
Discover carefully curated flight deals from St. Louis to Aurora that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated June 9, 2026.
This Southwest deal was found by Cheapflights users on 6/5. 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.
Tue 9/12:50 pm
STL
- DEN
1 stop3h 30m
Southwest
Wed 9/28:55 am
DEN
- STL
2 stops6h 30m
Southwest
Deal found 6/5![Southwest logo]()
$238
This Delta deal was found by Cheapflights users on 6/5. 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 11/116:30 am
STL
- DEN
1 stop6h 33m
Delta
Sat 11/1411:10 am
DEN
- STL
1 stop4h 44m
Delta
Deal found 6/5![Delta logo]()
$257
This United Airlines deal was found by Cheapflights users on 6/4. 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.
Sun 10/45:10 am
STL
- DEN
Nonstop2h 33m
United Airlines
Wed 10/78:30 pm
DEN
- STL
Nonstop2h 15m
United Airlines
Deal found 6/4![United Airlines logo]()
$292
This Delta deal was found by Cheapflights users on 6/8. 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 9/296:25 am
STL
- DEN
1 stop4h 38m
Delta
Sat 10/36:00 am
DEN
- STL
1 stop9h 41m
Delta
Deal found 6/8![Delta logo]()
$271
This Southwest deal was found by Cheapflights users on 6/9. 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.
Wed 9/168:45 pm
STL
- DEN
Nonstop2h 15m
Southwest
Sun 9/206:05 am
DEN
- STL
Nonstop2h 00m
Southwest
Deal found 6/9![Southwest logo]()
$294
This Southwest deal was found by Cheapflights users on 6/8. 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.
Wed 7/88:35 am
STL
- DEN
2 stops6h 00m
Southwest
Tue 8/48:55 am
DEN
- STL
2 stops6h 30m
Southwest
Deal found 6/8![Southwest logo]()
$314
This United Airlines deal was found by Cheapflights users on 6/7. 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.
Thu 9/179:00 am
STL
- DEN
Nonstop2h 31m
United Airlines
Sun 9/205:32 pm
DEN
- STL
Nonstop2h 06m
United Airlines
Deal found 6/7![United Airlines logo]()
$367
This Southwest deal was found by Cheapflights users on 6/5. 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 11/1911:20 am
STL
- DEN
Nonstop2h 25m
Southwest
Sun 11/227:10 am
DEN
- STL
1 stop4h 10m
Southwest
Deal found 6/5![Southwest logo]()
$373
This United Airlines deal was found by Cheapflights users on 6/6. 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.
Wed 9/161:36 pm
STL
- DEN
Nonstop2h 24m
United Airlines
Wed 9/235:32 pm
DEN
- STL
Nonstop2h 06m
United Airlines
Deal found 6/6![United Airlines logo]()
$427
This Southwest deal was found by Cheapflights users on 6/8. 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 7/98:10 am
STL
- DEN
1 stop4h 45m
Southwest
Thu 7/167:40 am
DEN
- STL
2 stops5h 30m
Southwest
Deal found 6/8![Southwest logo]()
$392
This Southwest deal was found by Cheapflights users on 6/5. 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.
Sun 6/216:00 am
STL
- DEN
1 stop4h 20m
Southwest
Tue 6/238:05 am
DEN
- STL
1 stop5h 40m
Southwest
Deal found 6/5![Southwest logo]()
$442
Last-minute flights from St. Louis to AuroraDiscover last-minute flight deals from St. Louis to Aurora. Data last updated June 9, 2026 and is based on user searches.
Discover last-minute flight deals from St. Louis to Aurora. Data last updated June 9, 2026 and is based on user searches.
This Cheapflightsfares deal was found by Cheapflights users on 6/9. 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.
Tue 6/308:08 pm
STL
- DEN
Nonstop2h 36m
Frontier
Tue 7/74:10 pm
DEN
- STL
Nonstop2h 13m
Frontier
Deal found 6/9![Frontier logo]()
$168
This Cheapflightsfares deal was found by Cheapflights users on 6/5. 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.
Wed 7/18:08 pm
STL
- DEN
Nonstop2h 36m
Frontier
Wed 7/84:10 pm
DEN
- STL
Nonstop2h 13m
Frontier
Deal found 6/5![Frontier logo]()
$141
This Expedia deal was found by Cheapflights users on 6/7. 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 Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 7/18:08 pm
STL
- DEN
Nonstop2h 36m
Frontier
Wed 7/294:10 pm
DEN
- STL
Nonstop2h 13m
Frontier
Deal found 6/7![Frontier logo]()
$165
This Kiwi.com deal was found by Cheapflights users on 6/8. 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.
Tue 7/148:08 pm
STL
- DEN
Nonstop2h 36m
Frontier
Wed 7/154:10 pm
DEN
- STL
Nonstop2h 13m
Frontier
Deal found 6/8![Frontier logo]()
$177
This Super.com deal was found by Cheapflights users on 6/4. 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 Super.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 7/218:08 pm
STL
- DEN
Nonstop2h 36m
Frontier
Tue 7/284:10 pm
DEN
- STL
Nonstop2h 13m
Frontier
Deal found 6/4![Frontier logo]()
$156
This Frontier deal was found by Cheapflights users on 6/6. 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 Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 7/218:08 pm
STL
- DEN
Nonstop2h 36m
Frontier
Thu 7/304:10 pm
DEN
- STL
Nonstop2h 13m
Frontier
Deal found 6/6![Frontier logo]()
$175
This Cheapflightsfares deal was found by Cheapflights users on 6/5. 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.
Tue 7/288:08 pm
STL
- DEN
Nonstop2h 36m
Frontier
Mon 8/34:10 pm
DEN
- STL
Nonstop2h 13m
Frontier
Deal found 6/5![Frontier logo]()
$146
This Kiwi.com deal was found by Cheapflights users on 6/6. 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.
Tue 7/288:08 pm
STL
- DEN
Nonstop2h 36m
Frontier
Wed 8/54:10 pm
DEN
- STL
Nonstop2h 13m
Frontier
Deal found 6/6![Frontier logo]()
$162
This Cheapflightsfares deal was found by Cheapflights users on 6/6. 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.
Wed 7/298:08 pm
STL
- DEN
Nonstop2h 36m
Frontier
Sat 8/14:10 pm
DEN
- STL
Nonstop2h 13m
Frontier
Deal found 6/6![Frontier logo]()
$173
One-way flights from St. Louis to AuroraSearch for one-way flight options from St. Louis to Aurora. Find affordable one-way fares based on user searches. Data last updated June 9, 2026.
Search for one-way flight options from St. Louis to Aurora. Find affordable one-way fares based on user searches. Data last updated June 9, 2026.
This Super.com deal was found by Cheapflights users on 6/5. 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 Super.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 8/198:08 pm
STL
- DEN
Nonstop2h 36m
Frontier
Deal found 6/5![Frontier logo]()
$78
This Kiwi.com deal was found by Cheapflights users on 6/8. 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.
Thu 9/38:08 pm
STL
- DEN
Nonstop2h 36m
Frontier
Deal found 6/8![Frontier logo]()
$79
This Super.com deal was found by Cheapflights users on 6/8. 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 Super.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 8/268:08 pm
STL
- DEN
Nonstop2h 36m
Frontier
Deal found 6/8![Frontier logo]()
$81
This Kiwi.com deal was found by Cheapflights users on 6/9. 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.
Tue 8/43:41 pm
STL
- DEN
1 stop8h 14m
Frontier
Deal found 6/9![Frontier logo]()
$83
This Super.com deal was found by Cheapflights users on 6/8. 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 Super.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 8/178:08 pm
STL
- DEN
Nonstop2h 36m
Frontier
Deal found 6/8![Frontier logo]()
$96
This Frontier deal was found by Cheapflights users on 6/9. 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 Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 8/68:08 pm
STL
- DEN
Nonstop2h 36m
Frontier
Deal found 6/9![Frontier logo]()
$97
This Cheapflightsfares deal was found by Cheapflights users on 6/6. 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.
Sat 6/277:38 pm
STL
- DEN
Nonstop2h 26m
Frontier
Deal found 6/6![Frontier logo]()
$102
This Kiwi.com deal was found by Cheapflights users on 6/9. 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.
Mon 8/37:10 pm
STL
- DEN
1 stop9h 38m
Frontier
Deal found 6/9![Frontier logo]()
$103
This Cheapflightsfares deal was found by Cheapflights users on 6/9. 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.
Tue 7/78:08 pm
STL
- DEN
Nonstop2h 36m
Frontier
Deal found 6/9![Frontier logo]()
$104
This Frontier deal was found by Cheapflights users on 6/7. 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 Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 7/218:08 pm
STL
- DEN
Nonstop2h 36m
Frontier
Deal found 6/7![Frontier logo]()
$106
This Southwest deal was found by Cheapflights users on 6/4. 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.
Wed 7/16:40 pm
STL
- DEN
Nonstop2h 20m
Southwest
Deal found 6/4![Southwest logo]()
$109
Find 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 9, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $141 (Cheapflightsfares) |
One-way from | $78 (Super.com) |
Popular in | June |
Cheapest in | October |
Average price | $315 |
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 9, 2026.
Use the filters below to find and compare flights from St. Louis to Aurora that are best for you.
Fly from
Fly to
Route
Depart
Return
Cheapest round-trip
St. LouisDenver
STL - DEN
STLDEN
Lambert-St Louis
Tue 9/1
2:50 pm-5:20 pm
1 stop3h 30m
Denver Intl
Wed 9/2
8:55 am-4:25 pm
2 stops6h 30m
$238
St. LouisDenver
STL - DEN
STLDEN
Lambert-St Louis
Wed 11/11
6:30 am-12:03 pm
1 stop6h 33m
Denver Intl
Sat 11/14
11:10 am-4:54 pm
1 stop4h 44m
$257
St. LouisDenver
STL - DEN
STLDEN
Lambert-St Louis
Tue 9/29
6:25 am-10:03 am
1 stop4h 38m
Denver Intl
Sat 10/3
6:00 am-4:41 pm
1 stop9h 41m
$271
St. LouisDenver
STL - DEN
STLDEN
Lambert-St Louis
Sun 10/4
5:10 am-6:43 am
Nonstop2h 33m
Denver Intl
Wed 10/7
8:30 pm-11:45 pm
Nonstop2h 15m
$292
Quickest round-trip
St. LouisDenver
STL - DEN
STLDEN
Lambert-St Louis
Wed 9/16
8:45 pm-10:00 pm
Nonstop2h 15m
Denver Intl
Sun 9/20
6:05 am-9:05 am
Nonstop2h 00m
$294
St. LouisDenver
STL - DEN
STLDEN
Lambert-St Louis
Wed 7/8
8:35 am-1:35 pm
2 stops6h 00m
Denver Intl
Tue 8/4
8:55 am-4:25 pm
2 stops6h 30m
$314
St. LouisDenver
STL - DEN
STLDEN
Lambert-St Louis
Thu 9/17
9:00 am-10:31 am
Nonstop2h 31m
Denver Intl
Sun 9/20
5:32 pm-8:38 pm
Nonstop2h 06m
$367
St. LouisDenver
STL - DEN
STLDEN
Lambert-St Louis
Thu 11/19
11:20 am-12:45 pm
Nonstop2h 25m
Denver Intl
Sun 11/22
7:10 am-12:20 pm
1 stop4h 10m
$373
St. LouisDenver
STL - DEN
STLDEN
Lambert-St Louis
Thu 7/9
8:10 am-11:55 am
1 stop4h 45m
Denver Intl
Thu 7/16
7:40 am-2:10 pm
2 stops5h 30m
$392
St. LouisDenver
STL - DEN
STLDEN
Lambert-St Louis
Wed 9/16
1:36 pm-3:00 pm
Nonstop2h 24m
Denver Intl
Wed 9/23
5:32 pm-8:38 pm
Nonstop2h 06m
$427
Showing 1-10 of 22 resultsSorted by cheapest first
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.
STL-DEN
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
STL-9UR
STL-DEN
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 9, 2026.
It’s optimal to fly from St. Louis to Aurora in the evening. By choosing this option you can save up to 52% on the cost of your flight, compared to a flight in the morning.
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 9, 2026.
The most flights from STL to 9UR are scheduled on a Tuesday (16 on average). You will have fewer flight options on Sunday, which is when the least amount of flights are scheduled (5 on average).
How much does it cost to fly round-trip from St. Louis to Aurora?
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 8, 2026.
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. Sunday at noon flights should be avoided if possible as fares are typically the most expensive at this time.
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 9, 2026.
See what other customers who have flown with Southwest,Delta, andUnited Airlines from St. Louis to Aurora have to say. You can also see how each airline compares in terms of entertainment options, comfort, food, crew/service, and boarding process.
Comfort
8.0
Entertainment
7.5
Crew
8.6
Food
7.0
Boarding
8.1
Overall
7.9
Reviews
1 / 20
2.0
MediocreThomas,Dec 2025
SEA - DEN
Comfort
8.0
Entertainment
7.5
Crew
8.6
Food
7.0
Boarding
8.1
Overall
7.9
Reviews
1 / 20
2.0
MediocreThomas,Dec 2025
SEA - DEN
Comfort
8.0
Entertainment
7.5
Crew
8.6
Food
7.0
Boarding
8.1
Overall
7.9
Reviews
1 / 20
2.0
MediocreThomas,Dec 2025
SEA - DEN
Comfort
8.0
Entertainment
7.5
Crew
8.6
Food
7.0
Boarding
8.1
Overall
7.9
Reviews
1 / 20
2.0
MediocreThomas,Dec 2025
SEA - DEN
Comfort
8.0
Entertainment
7.5
Crew
8.6
Food
7.0
Boarding
8.1
Overall
7.9
Reviews
1 / 20
2.0
MediocreThomas,Dec 2025
SEA - DEN
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.
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Alternative routes for St. Louis to Aurora
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Complete your trip
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Search flights from St. Louis to Aurora by cabin class
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St. Louis and Aurora flights
Browse other St. Louis and Aurora flight options. Last updated on June 9, 2026.
Other flights from St. Louis
Browse through other flights departing from St. Louis. Flights are based on user searches made on Cheapflights and were last updated on June 9, 2026.
Popular flight searches
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St. Louis to Aurora flights
Consider these flights traveling from St. Louis to Aurora.
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 9, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$56 | Average$145 | FlexibilityNo cancel fee | On-time62% | |
| Cheapest$163 | Average$331 | FlexibilityNo cancel fee | On-time63% | |
| Cheapest$170 | Average$364 | FlexibilityNo cancel fee | On-time69% | |
| Cheapest$178 | Average$334 | FlexibilityNo cancel fee | On-timeN/A | |
| Cheapest$271 | Average$342 | FlexibilityNo cancel fee | On-time71% |