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Find and compare Frontier flights to St. Louis

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Recent Frontier flights to St. Louis found by users

Cheap Frontier Flight Deals to St. Louis

Enter your travel dates to find the best prices.
Frontier Logo
7:05 am - 10:14 amDEN-STL
2h 09mnonstop
Frontier Logo
7:43 pm - 9:15 pmSTL-DEN
2h 32mnonstop
$100Frontier
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Fri, Dec 5 - Sat, Dec 6
Frontier Logo
7:05 am - 10:14 amDEN-STL
2h 09mnonstop
Frontier Logo
10:10 pm - 9:04 amSTL-DEN
11h 54m1 stop
$101Frontier
Find Deal
Wed, Dec 17 - Sun, Dec 21
Frontier Logo
6:50 am - 10:02 amDEN-STL
2h 12mnonstop
Frontier Logo
10:10 pm - 3:58 amSTL-DEN
6h 48m1 stop
$102Frontier
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Fri, Dec 26 - Mon, Dec 29
Frontier Logo
12:59 am - 9:47 amDEN-STL
7h 48m1 stop
Frontier Logo
7:43 pm - 9:15 pmSTL-DEN
2h 32mnonstop
$103Frontier
Find Deal
Thu, Dec 11 - Fri, Dec 19
Frontier Logo
6:50 am - 10:02 amDEN-STL
2h 12mnonstop
Frontier Logo
10:10 pm - 9:04 amSTL-DEN
11h 54m1 stop
$104Frontier
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Fri, Dec 19 - Sun, Dec 21
Frontier Logo
11:59 pm - 8:59 amDEN-STL
8h 00m1 stop
Frontier Logo
3:30 pm - 11:04 pmSTL-DEN
8h 34m1 stop
$109Frontier
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Thu, Dec 4 - Tue, Dec 9
Frontier Logo
10:23 pm - 3:08 pmDFW-STL
16h 45m1 stop
Frontier Logo
7:03 pm - 9:07 pmSTL-DFW
2h 04mnonstop
$110Frontier
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Thu, Nov 27 - Mon, Dec 1
Frontier Logo
6:50 am - 10:02 amDEN-STL
2h 12mnonstop
Frontier Logo
9:54 pm - 3:58 amSTL-DEN
7h 04m1 stop
$110Frontier
Find Deal
Fri, Nov 21 - Wed, Nov 26
Frontier Logo
7:05 am - 10:14 amDEN-STL
2h 09mnonstop
Frontier Logo
12:07 pm - 6:08 pmSTL-DEN
7h 01m1 stop
$111Frontier
Find Deal
Fri, Dec 5 - Mon, Dec 8
Frontier Logo
6:50 am - 10:02 amDEN-STL
2h 12mnonstop
Frontier Logo
5:11 pm - 5:33 pmSTL-DEN
25h 22m1 stop
$112Frontier
Find Deal
Fri, Dec 19 - Tue, Jan 6

Frontier flights to St. Louis at a glance

Best Price Found

$174

Fastest flight time

1h 51m

Direct flights

Every day

Airports in St. Louis

1 airport
The best flight deal from United States to St. Louis found on momondo in the last 72 hours is $174
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The fastest flight from United States to St. Louis takes 1h 51m
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Direct flights go from United States to St. Louis every day.
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There is 1 airport near St. Louis: Lambert-St Louis (STL)
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Insights on Frontier flights to St. Louis

Data designed to help you find the right flight

What is the cheapest day to depart on your Economy Class flight to St. Louis?

The cheapest day to depart from United States to St. Louis is on a Saturday when prices can be found for as low as $56. Be sure to avoid booking your departure on a Wednesday as prices are generally higher than usual. According to our data, the average Economy Class ticket price to St. Louis on a Wednesday is $300.

What is the cheapest month to fly Economy Class to St. Louis?

In general, June is the cheapest month to fly Economy Class from United States to St. Louis. Due to it being the ‘off-season’ during this time, you can expect Economy Class flight prices to be around $127. If you aren’t able to travel during the month of June, then book Economy Class flights to St. Louis from United States during November instead. Economy Class flights to St. Louis in November, while not as cheap as those in June, still average around $129.

How far in advance should I book a flight to St. Louis?

You are more likely to see cheaper flights to St. Louis from United States when booking weeks ahead of your departure date. In general, you can expect to find flights to St. Louis for around $150 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to St. Louis from United States for as low as $99 on momondo.

Frequently asked questions about flights to St. Louis with Frontier

Is Frontier generally cheaper than other airlines for flights to St. Louis?

Lots of factors influence the price of a flight, whether that's with Frontier or other airlines so it is best to search and compare before booking. The airline flying to St. Louis with the cheapest average return price tends to be Frontier.

Which other airlines fly to St. Louis?

Aside from Frontier, Southwest, Delta and Spirit Airlines also fly to St. Louis.

How much is a flight to St. Louis with Frontier?

The average price for a return flight is $292.

Which airport do Frontier flights arrive at for St. Louis?

Flights from Frontier on this route tend to land in Lambert-St Louis Airport.

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