Book Allegiant Air Flights to St. Louis

Allegiant flies into MidAmerica St. Louis Airport (BLV) in Belleville, Illinois, not Lambert (STL). That is a critical detail to know before you book, because BLV is about 25 miles east of downtown St. Louis on the Illinois side. The trade-off is free parking, almost no security lines, and a quick walk from your car to the gate.

Allegiant Air Flight Details and Travel Information for Flights to St. Louis

Flight Time: 1.5 to 4 hours (nonstop)

Cheapest Months: January, February, September

Departure Airports: St. Pete-Clearwater (PIE), Fort Lauderdale (FLL), Punta Gorda (PGD), Orlando/Sanford (SFB), Sarasota (SRQ), Destin (VPS), Phoenix-Mesa (AZA), Las Vegas (LAS)

Cabin Options: Economy (single class; Allegiant Extra legroom seats available for an added fee)

Time Zone: Central Time (CT)

US Departure Airports for Allegiant Air Flights to St. Louis

<p><span style="font-size:11pt; font-variant:normal; white-space:pre-wrap"><span style="font-family:Lexend,sans-serif"><span style="color:#000000"><span style="font-weight:700"><span style="font-style:normal"><span style="text-decoration:none">St. Pete-Clearwater International Airport (PIE)</span></span></span></span></span></span></p>

St. Pete-Clearwater International Airport (PIE)

Nonstop flights from St. Pete-Clearwater to St. Louis. PIE is one of Allegiant's busiest Florida bases with quick security lines and frequent departures.

Fort Lauderdale-Hollywood International Airport (FLL)

Allegiant operates nonstop service from Fort Lauderdale to St. Louis. FLL offers convenient access for South Florida travelers.

Southwest Florida International Airport (RSW)

Allegiant connects Fort Myers to St. Louis with nonstop service. The airport serves the Fort Myers and Cape Coral area.

Orlando Sanford International Airport (SFB)

Allegiant's primary Orlando-area hub provides nonstop flights to St. Louis. SFB is smaller and less congested than MCO.

St. Louis Airport Arrival Guide for Allegiant Air Flights

Allegiant uses MidAmerica St. Louis Airport (BLV) in Belleville, Illinois, not St. Louis Lambert International Airport (STL). BLV is a converted military facility on the Illinois side of the metro area. The airport is small and efficient with free parking, minimal security wait times, and a straightforward layout.

Located about 25 miles east of downtown St. Louis, in Belleville, Illinois, the airport provides straightforward access to the city and surrounding areas.

Terminal: Single small terminal for all Allegiant flights
Transport Options: Taxis, Uber/Lyft, rental cars nearby
Parking: Free parking in surface lots adjacent to the terminal
Transfer Time to Downtown St. Louis: About 30 to 40 minutes by car via I-64

Free parking is a big perk at BLV. The terminal is small with limited food options inside, but the stress-free experience and no parking costs offset that for most travelers.

Best Time to Book Allegiant Air Flights to St. Louis

Cheapest Months to Travel

January, February, September tend to offer the lowest fares on Allegiant routes to St. Louis. These months fall outside peak travel demand, so you get better availability and lower prices.

Peak Travel Seasons to Avoid

Holiday travel in November through January is priciest. Major events can create small demand spikes, but generally fares are predictable.

Best Time to Book

Allegiant fares are lowest when booked 4 to 6 weeks ahead. BLV routes have limited frequencies, so booking early ensures availability.

Midweek Advantage

Tuesday and Wednesday departures are consistently the cheapest. Allegiant may only fly certain routes twice per week.

Time Zone to Factor In

St. Louis operates in the Central Time zone. East Coast travelers lose 1 hour, West Coast travelers gain 2 hours.

What Cabin Classes Are Available on Allegiant Air Flights to St. Louis?

The standard cabin on all Allegiant flights to St. Louis. Seats are arranged in a 3-3 configuration on both Airbus and Boeing aircraft. Seat pitch is around 30 inches with a seat width of about 17.8 inches on A320 aircraft. No seatback screens, no complimentary food or drinks. You can purchase snacks and beverages on board. One personal item (backpack size, fitting under the seat) is included free. Everything else, including carry-on bags, checked bags, and seat selection, costs extra.

Allegiant Extra seats are in the first few rows (typically rows 1 through 5 on A320/A319, rows 1 through 3 on 737 MAX). These offer additional legroom of around 34 to 36 inches. They cost $15 to $50+ extra depending on the route and demand. It's still Economy class service, just with more space. No priority boarding or additional perks are included unless you purchase a bundle.

Allegiant sells optional bundles that package several add-ons at a discount. The Total bundle typically includes a carry-on bag, checked bag, seat selection, and priority boarding. The Bonus bundle is a lighter version. Bundle pricing varies by route and date. Bundling saves money compared to purchasing each item separately. Mundo Trip can show you the bundle options for your specific St. Louis flight.

Allegiant Air Flights to St. Louis

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Book Allegiant Air Flights to St. Louis

Allegiant Air Flight Details and Travel Information for Flights to St. Louis

US Departure Airports for Allegiant Air Flights to St. Louis

St. Pete-Clearwater International Airport (PIE)

Fort Lauderdale-Hollywood International Airport (FLL)

Southwest Florida International Airport (RSW)

Orlando Sanford International Airport (SFB)

St. Louis Airport Arrival Guide for Allegiant Air Flights

Book Allegiant Air Flights to St. Louis

Best Time to Book Allegiant Air Flights to St. Louis

What Cabin Classes Are Available on Allegiant Air Flights to St. Louis?

Frequently Asked Questions

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