Search Cheap Flights to
Frontenac

Search 400 airlines and 321,000 hotels worldwide.

Stop Planning & Start Exploring

FREE 24 hour cancellation on most flights

Frontenac Flights as Low as $56

Prices found within past 7 days. Prices and availability subject to change. Additional terms may apply.

Frontier Airlines
Tue, Jun 2 - Wed, Jun 17
ATL
Hartsfield-Jackson Atlanta Intl.
STL
Lambert-St. Louis Intl.
$56 Roundtrip, just found
$56
Roundtrip
just found
Select Frontier Airlines flight, departing Tue, Jun 2 from Hartsfield-Jackson Atlanta Intl. to Lambert-St. Louis Intl., returning Wed, Jun 17, priced at $56 just found
Frontier Airlines
Wed, May 20 - Mon, Jun 1
ATL
Hartsfield-Jackson Atlanta Intl.
STL
Lambert-St. Louis Intl.
$62 Roundtrip, just found
$62
Roundtrip
just found
Select Frontier Airlines flight, departing Wed, May 20 from Hartsfield-Jackson Atlanta Intl. to Lambert-St. Louis Intl., returning Mon, Jun 1, priced at $62 just found
Frontier Airlines
Tue, Jun 2 - Tue, Jun 16
ATL
Hartsfield-Jackson Atlanta Intl.
STL
Lambert-St. Louis Intl.
$67 Roundtrip, found 6 hours ago
$67
Roundtrip
found 6 hours ago
Select Frontier Airlines flight, departing Tue, Jun 2 from Hartsfield-Jackson Atlanta Intl. to Lambert-St. Louis Intl., returning Tue, Jun 16, priced at $67 found 6 hours ago
Frontier Airlines
Sat, Apr 18 - Wed, Apr 22
ATL
Hartsfield-Jackson Atlanta Intl.
STL
Lambert-St. Louis Intl.
$68 Roundtrip, found 2 hours ago
$68
Roundtrip
found 2 hours ago
Select Frontier Airlines flight, departing Sat, Apr 18 from Hartsfield-Jackson Atlanta Intl. to Lambert-St. Louis Intl., returning Wed, Apr 22, priced at $68 found 2 hours ago
Frontier Airlines
Sat, Apr 18 - Sat, May 2
DEN
Denver Intl.
STL
Lambert-St. Louis Intl.
$75 Roundtrip, found 4 hours ago
$75
Roundtrip
found 4 hours ago
Select Frontier Airlines flight, departing Sat, Apr 18 from Denver Intl. to Lambert-St. Louis Intl., returning Sat, May 2, priced at $75 found 4 hours ago
Frontier Airlines
Sat, May 30 - Sat, Jun 13
DFW
Dallas-Fort Worth Intl.
STL
Lambert-St. Louis Intl.
$80 Roundtrip, found 16 hours ago
$80
Roundtrip
found 16 hours ago
Select Frontier Airlines flight, departing Sat, May 30 from Dallas-Fort Worth Intl. to Lambert-St. Louis Intl., returning Sat, Jun 13, priced at $80 found 16 hours ago
American Airlines
Tue, May 12 - Wed, May 13
ORD
O'Hare Intl.
STL
Lambert-St. Louis Intl.
$119 Roundtrip, found 1 hour ago
$119
Roundtrip
found 1 hour ago
Select American Airlines flight, departing Tue, May 12 from O'Hare Intl. to Lambert-St. Louis Intl., returning Wed, May 13, priced at $119 found 1 hour ago
Frontier Airlines
Sat, Apr 25 - Wed, May 13
IAH
George Bush Intercontinental
STL
Lambert-St. Louis Intl.
$142 Roundtrip, found 17 hours ago
$142
Roundtrip
found 17 hours ago
Select Frontier Airlines flight, departing Sat, Apr 25 from George Bush Intercontinental to Lambert-St. Louis Intl., returning Wed, May 13, priced at $142 found 17 hours ago
Frontier Airlines
Sun, Apr 26 - Sat, May 9
PHL
Philadelphia Intl.
STL
Lambert-St. Louis Intl.
$142 Roundtrip, found 7 hours ago
$142
Roundtrip
found 7 hours ago
Select Frontier Airlines flight, departing Sun, Apr 26 from Philadelphia Intl. to Lambert-St. Louis Intl., returning Sat, May 9, priced at $142 found 7 hours ago
Frontier Airlines
Tue, Apr 28 - Sat, May 9
TTN
Mercer
STL
Lambert-St. Louis Intl.
$153 Roundtrip, found 1 day ago
$153
Roundtrip
found 1 day ago
Select Frontier Airlines flight, departing Tue, Apr 28 from Mercer to Lambert-St. Louis Intl., returning Sat, May 9, priced at $153 found 1 day ago
Delta
Tue, May 12 - Wed, May 13
ORD
O'Hare Intl.
STL
Lambert-St. Louis Intl.
$159 Roundtrip, found 1 hour ago
$159
Roundtrip
found 1 hour ago
Select Delta flight, departing Tue, May 12 from O'Hare Intl. to Lambert-St. Louis Intl., returning Wed, May 13, priced at $159 found 1 hour ago
United
Tue, May 12 - Wed, May 13
ORD
O'Hare Intl.
STL
Lambert-St. Louis Intl.
$175 Roundtrip, found 1 hour ago
$175
Roundtrip
found 1 hour ago
Select United flight, departing Tue, May 12 from O'Hare Intl. to Lambert-St. Louis Intl., returning Wed, May 13, priced at $175 found 1 hour ago
Frontier Airlines
Thu, Apr 16 - Thu, Apr 23
LGA
LaGuardia
STL
Lambert-St. Louis Intl.
$203 Roundtrip, found 11 hours ago
$203
Roundtrip
found 11 hours ago
Select Frontier Airlines flight, departing Thu, Apr 16 from LaGuardia to Lambert-St. Louis Intl., returning Thu, Apr 23, priced at $203 found 11 hours ago
Delta
Tue, Apr 28 - Tue, May 12
DAL
Love Field
STL
Lambert-St. Louis Intl.
$259 Roundtrip, found 3 hours ago
$259
Roundtrip
found 3 hours ago
Select Delta flight, departing Tue, Apr 28 from Love Field to Lambert-St. Louis Intl., returning Tue, May 12, priced at $259 found 3 hours ago
Bargain Flight
Sat, Apr 11 - Mon, Apr 20
SDF
Louisville Intl.
STL
Lambert-St. Louis Intl.
$267 Roundtrip, found 11 hours ago
$267
Roundtrip
found 11 hours ago
Select Bargain Flight flight, departing Sat, Apr 11 from Louisville Intl. to Lambert-St. Louis Intl., returning Mon, Apr 20, priced at $267 found 11 hours ago
Alaska Airlines
Sat, May 9 - Fri, May 15
DEN
Denver Intl.
STL
Lambert-St. Louis Intl.
$500 Roundtrip, just found
$500
Roundtrip
just found
Select Alaska Airlines flight, departing Sat, May 9 from Denver Intl. to Lambert-St. Louis Intl., returning Fri, May 15, priced at $500 just found

Cheap Flights to Frontenac

Fall in love at first flight with your vacation to Frontenac by saving a ton of cash on your last-minute cheap flight. There’s no more scouring the internet for a good deal—book your flight to Frontenac on Hotwire, and you’ll be up, up, and on a getaway in no time.

Because once the wheels are down in Frontenac, the good times start rolling. So buckle up, you’re in for a fun ride.

Frequently Asked Questions About flights to Frontenac

Don’t waste your time on endless searches for cheap airline tickets oneway or roundtrip. We’ll have you on your way to Frontenac with a tiny bag of pretzels in your hand before you can say “tray tables in the upright position”—and for a ticket price that works for your vacay budget.

So all you have to worry about is where you’re headed after the STL airport.

What is the cheapest month to fly to Frontenac?

Airline ticket prices fluctuate all the time, depending on the day of the week or the month of the year. The cheapest round trip flights to Frontenac are in June, but when you book your flight on Hotwire, savings are always in season.

How many airlines fly to Frontenac?

Variety is the spice of life, even when it comes to booking your next trip. Want options for airlines? You’ll find 15 to choose from for your flight to Frontenac.

What airport is best to fly into Frontenac?

When you’re planning your trip to Frontenac, convenience is the name of the game. Luckily, Frontenac Lambert-St. Louis Intl. Airport is nearby so you can deplane and get going on checking off everything on your Frontenac must-do list.

How much are flights to Frontenac?

Got very cheap flights on your vacation itinerary? When you book your airline tickets to Frontenac on Hotwire, you may just get what’s on your getaway wish list. With tickets as low as $56, you’ll have leftover cash for at least a magazine and a bottle of water at the airport book store.

How to get cheap flights to Frontenac?

The trick to saving a stack of cash on your flight to Frontenac? Snatch up that Hotwire flight deal when you see a killer rate because it could be gone in a flash. And with flights as low as $56 right now, why wait?

Frontenac Flight Information
Destination airport
Lambert-St. Louis Intl.
Destination airport IATA code
STL
Roundtrip price
$56

Last Minute Hotel Deals in Frontenac

Hilton St. Louis Frontenac

Hilton St. Louis Frontenac

4 out of 5
1335 S Lindbergh Blvd Frontenac MO
Book a stay at this business-friendly hotel in Frontenac. Enjoy free WiFi, free parking, and an outdoor pool. Our guests praise the helpful staff in our reviews. ...
8.8/10 Excellent! (1,003 reviews)
Very nice! The exterior & lobby were gorgeous, and my room was spacious and accessible.

Reviewed on Apr 2, 2026

Get rates
Hilton St. Louis Frontenac
Pear Tree Inn St. Louis Near Union Station

Pear Tree Inn St. Louis Near Union Station

3 out of 5
2211 Market Street St. Louis MO
Book a stay at this business-friendly hotel in St. Louis. Enjoy free breakfast, free WiFi, and free parking. Our guests praise the breakfast and the restaurant ...
8.8/10 Excellent! (1,919 reviews)
A lot of options at breakfast but not many that fit in a wheat allergy. The staff is wonderful and the rooms were nice.

Reviewed on Apr 3, 2026

Get rates
Pear Tree Inn St. Louis Near Union Station
Drury Plaza Hotel St. Louis at the Arch

Drury Plaza Hotel St. Louis at the Arch

3 out of 5
2 South 4th Street St. Louis MO
Book a stay at this business-friendly hotel in St. Louis. Enjoy free breakfast, free WiFi, and 2 hot tubs. Our guests praise the breakfast and the pool in our ...
9.4/10 Exceptional! (3,352 reviews)
Breakfast was awesome both days! The 5:30 Kickback was very good but really crowded. Motel was fully booked and Cardinals had home games so this was understandable.

Reviewed on Apr 3, 2026

Get rates
Drury Plaza Hotel St. Louis at the Arch
21C Museum Hotel St Louis

21C Museum Hotel St Louis

4.5 out of 5
1528 Locust street St. Louis MO
Book a stay at this luxury hotel in St. Louis. Enjoy free WiFi, breakfast (surcharge), and room service. Our guests praise the pool and the restaurant in our ...
9/10 Wonderful! (1,717 reviews)
Excellent hotel we were there for new edition concert and so was the Ne crew for tour, good cafe but everyone wanted a latte. The gym was really good and poll also only issue I had was no attendant in this space early in the morning for towels and turn steam room on…. I needed a steam otherwise excellent ...

Reviewed on Apr 4, 2026

Get rates
21C Museum Hotel St Louis
Clayton Plaza Hotel & Extended Stay

Clayton Plaza Hotel & Extended Stay

3.5 out of 5
7750 Carondelet Avenue St. Louis MO
Book a stay at this business-friendly hotel in St. Louis. Enjoy free breakfast, free WiFi, and a 24-hour fitness center. Our guests praise the breakfast and ...
8.8/10 Excellent! (3,127 reviews)
The lobby was pretty, room was clean and comfortable.

Reviewed on Apr 4, 2026

Get rates
Clayton Plaza Hotel & Extended Stay
Hyatt Regency St. Louis at The Arch

Hyatt Regency St. Louis at The Arch

4 out of 5
315 Chestnut St St. Louis MO
Book a stay at this business-friendly hotel in St. Louis. Enjoy free WiFi, 3 restaurants, and 2 bars/lounges. Our guests praise the helpful staff and the clean ...
8.6/10 Excellent! (3,993 reviews)
The room was filthy. I mentioned it to the front desk and was told it would be remedied and never was.

Reviewed on Apr 4, 2026

Get rates
Hyatt Regency St. Louis at The Arch
Hollywood Casino & Hotel St. Louis

Hollywood Casino & Hotel St. Louis

3.5 out of 5
777 Casino Center Drive Maryland Heights MO
Book a stay at this business-friendly hotel in Maryland Heights. Enjoy free parking, 7 restaurants, and a casino. Our guests praise the helpful staff and the ...
8.4/10 Very Good! (2,192 reviews)
room very clean pretty plain for a suite very spacious and comfortable

Reviewed on Apr 1, 2026

Get rates
Hollywood Casino & Hotel St. Louis
Pear Tree Inn St. Louis Airport

Pear Tree Inn St. Louis Airport

2.5 out of 5
10810 Pear Tree Ln St. Ann MO
Book a stay at this business-friendly hotel in St. Ann. Enjoy free breakfast, free WiFi, and free parking. Our guests praise the breakfast and the helpful staff ...
9.4/10 Exceptional! (2,889 reviews)
We only stayed overnight to fatch a very early flight from STL airport, they offered free refreshments in the evening till 7:00pm but we did not try but was told it was very good. Bed was very comfortable abd unfortunately we did nit get to try the breakfast buffet due to a 4:30am flight, staff was ...

Reviewed on Apr 4, 2026

Get rates
Pear Tree Inn St. Louis Airport
See all 1,879 properties in Frontenac
Lowest nightly price found within the past 24 hours based on a 1 night stay for 2 adults. Prices and availability subject to change. Additional terms may apply.

Top Hotels With Free Airport Shuttle

Hilton St. Louis Frontenac

Hilton St. Louis Frontenac

4 out of 5
1335 S Lindbergh Blvd Frontenac MO
Book a stay at this business-friendly hotel in Frontenac. Enjoy free WiFi, free parking, and an outdoor pool. Our guests praise the helpful staff in our reviews. ...
8.8/10 Excellent! (1,003 reviews)
Very nice! The exterior & lobby were gorgeous, and my room was spacious and accessible.

Reviewed on Apr 2, 2026

Get rates
Hilton St. Louis Frontenac
See all 1,879 properties in Frontenac
Lowest nightly price found within the past 24 hours based on a 1 night stay for 2 adults. Prices and availability subject to change. Additional terms may apply.