St. Peter's Basilica with its dome and adjacent obelisk, surrounded by a colonnade.

$23 Cheap Flights to St. Peters, MO

View $23 flight on Thu, Oct 15, 2026Opens in a new window

Popular airlines to St. Peters

  • Be in the know

    Get alerts if flight prices drop or rise*

  • Book smarter

    Save up to 30% on select hotels after you book a flight*

  • Earn twice

    Earn your airline miles on top of our OneKeyCash
    Learn about One Key

Today's featured flight deals to St. Peters

NonstopCarry-on includedLower price than typical

How much is the cheapest flight to St. Peters?

Prices were available within the past 7 days and start at $23 for one-way flights and $46 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Frontier Airlines
Delta
Southwest Airlines
American Airlines
United

Alternative airports near St. Peters

Prices were available within the past 7 days. Prices and availability are subject to change.

Find the cheapest month to fly from Columbus (CMH) to St. Louis (STL)

From $148 - $387 per traveler.

What you need to know for your flight to St. Peters

Flights to St. Peters at a glance

Flying to St. Peters is a breeze. You can choose from a variety of airlines, whether you're looking for cheap flights to St. Peters or a more comprehensive service. Compare travel times and select the best option that fits your budget and plans for exploring the city's iconic sights and neighborhoods.

  • Major airport near St. Peters: Lambert-St. Louis International Airport (STL)
  • Flights per week: 3,150+ flights arriving at St. Peters airport
  • Number of airlines that fly to St. Peters: around 40+ carriers

Popular airport near St. Peters

St. Peters is a vibrant city ideal for family vacations, business trips, and urban exploration. Visitors are drawn to its outdoor activities, cultural experiences, and romantic spots. The city is conveniently accessible via a major airport, making travel planning straightforward for those looking to explore all that St. Peters has to offer.

  • Lambert-St. Louis International Airport (STL): Situated in St. Louis County, Missouri, approximately 14 miles from St. Peters, this airport operates both domestic and international flights. It connects travelers to around 210 domestic cities and 110 international locations. Passengers have the option to enhance their journey by selecting first class, premium economy, or business class service, depending on the airline and route. Notable airlines that operate from this airport include Southwest Airlines, American Airlines, and Delta.

Top routes to St. Peters

  • New York (JFK/LGA) to St. Peters (STL), with one-way flights starting at around $90
  • Las Vegas (LAS) to St. Peters (STL), with one-way fares starting at around $60
  • Orlando (MCO) to St. Peters (STL), with one-way flight options from around $45
  • Denver (DEN) to St. Peters (STL), with one-way flight options from around $45
  • Los Angeles (LAX) to St. Peters (STL), with one-way fares starting at around $120

Cheapest routes to St. Peters

  • Chicago (ORD/MDW) to St. Peters (STL), with low one-way fares from around $40
  • Kansas City (MCI) to St. Peters (STL), with low-cost one-way tickets from around $40
  • Quincy (UIN) to St. Peters (STL), with affordable one-way prices from around $40
  • Orlando (MCO) to St. Peters (STL), with low-cost one-way tickets from around $45
  • Denver (DEN) to St. Peters (STL), with affordable one-way prices from around $45

*Flight times and fares vary by season and availability and are based on one-way routes

Top airlines with flights to St. Peters

  • American Airlines: Operating flights to Lambert-St. Louis International Airport (STL), American Airlines is responsible for approximately 28% of arrivals in St. Peters. The typical one-way fare hovers around $330, with premium service options potentially including first class based on the route.
  • Southwest Airlines: Serving Lambert-St. Louis International Airport (STL), Southwest Airlines makes up about 27% of St. Peters' arrivals. Travelers can expect an average one-way fare of around $240.
  • Delta: With routes to Lambert-St. Louis International Airport (STL), Delta accounts for roughly 20% of arrivals to St. Peters. Average one-way fares are about $290, and premium cabin choices may feature both premium economy and first class, depending on the specific route.
  • United: Flying into Lambert-St. Louis International Airport (STL), United contributes around 15% of the arrivals to St. Peters. The average one-way fare is approximately $320, and depending on the route, first class service may be available.
  • Frontier Airlines: Operating to Lambert-St. Louis International Airport (STL), Frontier Airlines represents about 5% of St. Peters' arrivals. Known for its budget-friendly fares, the average one-way ticket costs around $150.

Best time to fly to St. Peters

The most popular months for travelers to fly to St. Peters are January, March, and April, when peak temperatures in St. Peters can reach up to 55.6°F in April. If you prefer quieter travel, consider September, the least busy time to visit with temperatures around 70.5°F and typically the lowest average one-way fare (around $222), roughly 9% cheaper than the yearly average. Looking for additional cheaper months to fly? October, May, and August offer average one-way fares of around $230, making them good options for flexible travelers.

calendar iconMonthtemperature iconTemperaturerain iconPrecipitationmostly cloudy iconCloudinesscrowd level iconDemandprice iconAverage one-way Fare
January31.1°F (-0.5°C)Light RainMostly CloudyModerately High$277
February34.2°F (1.2°C)Light RainMostly SunnyAverage$245
March45.9°F (7.7°C)Light RainMostly SunnyModerately High$273
April55.6°F (13.1°C)Light RainMostly SunnyModerately High$249
May65.8°F (18.8°C)Light RainMostly SunnyAverage$229
June75.4°F (24.1°C)Light RainMostly SunnyAverage$258
July78.4°F (25.8°C)Light RainMostly SunnyAverage$251
August76.6°F (24.8°C)Light RainMostly SunnyAverage$235
September70.5°F (21.4°C)Light RainMostly SunnyModerately Low$222
October57.9°F (14.4°C)Light RainMostly SunnyAverage$225
November45.7°F (7.6°C)Light RainMostly SunnyModerately Low$243
December37.0°F (2.8°C)Light RainMostly SunnyModerately Low$249

*Average one-way fare is based on Expedia flight booking data from January 2025 to April 2026 for the specified route and travel class and may change depending on availability, dates, and demand.

How to save money on a flight to St. Peters

Getting some of the best deals on flights to St. Peters is all about timing and flexibility. Here are some key tips to help you save:

  1. Compare flight options—use Expedia's search tool to compare airlines, routes, direct vs. non-direct flights, and flight times. You can also sort by price to find the most affordable options.
  2. Set up price alerts—as an Expedia member you can use Price Tracking to receive notifications when flight prices change.
  3. Bundle and save—book a flight and unlock a hotel deal on Expedia*, or explore our St. Peters hotel and flight deals.
  4. Think about luggage-nowadays, it's important to check the airline's baggage policies to find the best value. That may be paying for an additional carry-on bag or booking a ticket with checked luggage included. Either way, double-check your baggage allowance before confirming your booking to avoid excess baggage fees at the airport.
  5. Earn miles—you can earn airline miles when you book your St. Peters flight with Expedia. Just select your frequent flyer program and enter your program number when confirming your booking.

*For members. Select hotels.

Arriving in St. Peters

St. Peters welcomes travelers through its range of transport options based on price, convenience, and proximity. Here's how to reach St. Peters efficiently:

  • Public transportation: From Lambert-St. Louis International Airport, Lambert Main Terminal Station, a metro station, is conveniently located just 0.1 miles from the airport, making it easily accessible for travelers.
  • Hotel transfer: Transfers offer a convenient way to reach your hotel in St. Peters, with private rides that can be arranged in advance.
  • Car rental: Renting a car in St. Peters is a good option if you plan to explore and sightsee beyond the city. Browse cheap car rentals in St. Peters on Expedia.
  • Taxi/ride-hailing: Taxis and ride-hailing services may be available from designated pickup areas outside the terminal, check locally on arrival.

Where to stay around St. Peters

  • Dardenne Prairie: Located 6 miles away from St. Peters, Dardenne Prairie is a charming village perfect for family outings and outdoor adventures. Visitors can enjoy a variety of entertainment options, including a local arena and a golf course. Key points of interest include the National Equestrian Center, which hosts exciting events, and the picturesque urban park and lake, ideal for a leisurely day outdoors. The St. Charles Convention Center also draws business travelers, making Dardenne Prairie a versatile destination.
  • Weldon Spring Heights: Situated 7 miles away from St. Peters, Weldon Spring Heights offers a delightful blend of family-friendly activities and urban experiences. Outdoor enthusiasts can explore nearby nature reserves and urban parks while those seeking shopping can visit the local mall center. A highlight is Six Flags St. Louis, a popular amusement park that provides fun for all ages. The St. Charles Convention Center also serves as a key venue for business events, ensuring Weldon Spring Heights caters to a variety of visitors.
  • Earth City: Earth City is located 9 miles away from St. Peters and serves as a hub for family entertainment and urban exploration. With a range of activities available, visitors can enjoy shopping at the local mall or catch a show at the nearby theater. Notable attractions include the St. Charles Convention Center, an essential venue for conferences, and Westport Plaza, a vibrant neighborhood perfect for dining and shopping. Earth City combines convenience and excitement for travelers looking to explore the area.

Tips for short-haul flights to St. Peters

For quick getaways, efficiency is key. Here is how to make your short-haul journey smoother:

  • Pack light and skip checked bags—when flying with budget airlines, traveling with just a carry-on is often the more economical choice. To maximize space, use mini toiletries, wear your bulkiest clothing, and plan your outfits wisely. This approach also helps you avoid the hassle of waiting at baggage claim upon arrival.
  • Bring your own entertainment—many short-haul flights may lack in-flight entertainment options. Download your favorite TV shows, movies, music, or podcasts ahead of time, and consider bringing a book to keep yourself entertained. Be sure to fully charge your devices before you board.
  • Arrive at the airport in plenty of time—even for short or domestic flights, it's advisable to get to the airport at least 1.5 to 2 hours before your scheduled departure, allowing time for traffic and security lines.
  • Bring your own snacks and water—pack some snacks and a refillable water bottle to stay hydrated and save money while at the airport.

Tips for long-haul flights to St. Peters

Flying long-haul sometimes requires extra planning to ensure a comfortable journey:

  • Select your seat in advance—for long flights, choosing your seat is essential for comfort. Full-service airlines often provide free seat selection once online check-in opens, usually 24–48 hours prior to your flight. Some airlines allow seat selection even earlier.
  • Arrive at the airport in plenty of time—make sure to arrive at least 3 hours before departure for international flights to accommodate check-in, security, and immigration procedures.
  • Relax at the airport—if you have some extra time, take the opportunity to browse the shops, grab a coffee, or unwind at the gate or in a departure lounge if you have access. Airport Wi-Fi is typically free and available.
  • Adjust to the new time zone mid-flight—begin to sync your body clock by changing your watch and adjusting your sleep schedule to align with your destination's time zone. Try to sleep or stay awake during the flight according to the local time at your arrival destination to help minimize jet lag.

Frequently asked questions

What month is the cheapest to fly to St. Peters?
The cheapest month to fly to St. Peters is November when there's less demand. Off-peak months are usually when you'll find cheap fares. To keep costs down, avoid flying during school breaks and major holidays.
Which US cities have the cheapest flights to St. Peters?
Chicago, Dallas and Denver generally offer cheap flights to St. Peters. Bear in mind that prices vary based on factors like demand, number of stopovers and time of year.
Which US cities fly direct to St. Peters?
Take your pick of 55 US destinations that have direct flights to St. Peters. While booking on Expedia, check the "Direct flights only" filter to find nonstop itineraries. Fly to St. Peters from any of these major cities:
  • Chicago
  • Dallas
  • Denver
  • New York
  • Atlanta
How to find a cheap flight to St. Peters?
Book your trip early to snag cheap flights to St. Peters. Also, consider visiting during off-peak months like January and February. If you fly on a Thursday, you can save 16% on average compared to those departing on a Sunday.* Save time checking every day and track your flight prices using the Expedia app. We'll let you know when fares change.*Best day of the week to book, depart and ideal booking window recommendations based on average round-trip ticket prices for January through August 2023, sourced from Airline Reporting Corporation's (ARC) global airline sales database. Percentages noted are averages.
How to get a cheap last-minute flight to St. Peters?
You can find great deals on last-minute departures to St. Peters, especially if your travel plans aren't set in stone. Consider jetting out of a different hub, changing your trip dates or choosing an alternative carrier to get a cheap flight to St. Peters.
How far in advance should I book a flight to St. Peters?
Find the travel dates you want and a fare that fits your budget by booking your domestic flight to St. Peters up to 28 days in advance. Lock in tickets two to four months ahead if you're traveling to St. Peters from an international destination.**Best day of the week to book, depart and ideal booking window recommendations based on average round-trip ticket prices for January through August 2023, sourced from Airline Reporting Corporation's (ARC) global airline sales database. Percentages noted are averages.
Which day of the week is the cheapest day to buy a plane ticket to St. Peters?
Generally, you can get cheap flights to St. Peters on a Sunday. Travelers can save around 8% on average compared to those who book on a Friday, which is often the most expensive day for tickets.**Best day of the week to book, depart and ideal booking window recommendations based on average round-trip ticket prices for January through August 2023, sourced from Airline Reporting Corporation's (ARC) global airline sales database. Percentages noted are averages.
Which airlines fly to St. Peters?
A total of 10 airlines connect 33 airports around the world to St. Peters. Here are a few of the popular airlines to St. Peters, where Lambert-St. Louis Intl. Airport (STL) is the major arrival point:
  • Delta Air Lines
  • American Airlines
  • United Airlines
  • Southern Airways Express
Where do you fly into St. Peters?
If you're flying to St. Peters, the main hub to disembark at is Lambert-St. Louis Intl. Airport (STL). Alternatively, you could fly to St. Peters via Spirit of St. Louis Airport (SUS).
How far is the airport from central St. Peters?
Jetting into Lambert-St. Louis Intl. Airport (STL) puts you approximately 14 mi east of the center of St. Peters.
Can I save money by booking a St. Peters trip package?
Book a St. Peters flight and hotel package deal on Expedia, and you can make significant savings. It's simple to bundle your accommodations and flights, and you can also add car rentals and activities to create your own customized St. Peters getaway. Plus, nothing beats the convenience of booking everything in the same place.
Can I change or cancel my flight to St. Peters?
You can usually change or cancel your flight to St. Peters within 24 hours of booking. However, keep in mind that some fares are non-refundable. In those cases, you may be issued a credit toward a future flight rather than a direct refund. Make sure you check the airline's terms and conditions in your itinerary for exact details. You can use Expedia's "No cancel fee" or "Changes included" filters during your search to find cheap flights to St. Peters with flexible change policies. For additional information, browse our Customer Service Portal.

*Flight schedules are subject to change.

*Available to One Key members.

Book with confidence

Tips to find the cheapest flights to St. Peters

The cheapest day to fly

Get started finding a cheap flight to St. Peters on Expedia by either choosing a deal on this page or entering into the search bar your travel dates, origin airport, and whether you want roundtrip or one-way airfare. You can filter for flexibility, number of stops, airline, and departure/arrival times to find the best flight for you.

The cheapest month to fly

November is the cheapest month to fly to St. Peters. This coincides with the low season when fewer people travel. Whichever month you travel in, though, be sure to book at least a month in advance if you want to score cheap tickets to St. Peters. ARC's data shows that domestic flights booked 28 days or more before departure are typically 24% cheaper than those booked last minute.

The most affordable time to book a flight

Typically, a Sunday can be the cheapest time to book a flight to St. Peters, according to ARC’s data. On average, you could save between 6% and 13% by booking on a Sunday instead of a Friday, which is the most expensive day to make a reservation.

The cheapest round-trip tickets to St. Peters

The lowest price for round-trip flights to St. Peters in 2026 starts from from $46, while one-way tickets start from from $23. Expedia's effective search tool is one of the best ways to find a budget airfare. Simply enter your dates, and within seconds, it'll show you a vast selection of the cheapest flights to St. Peters. If you have a preferred departure time or airline, you can use the handy filters to customize your search.

The cheapest airlines flying to St. Peters

Frontier Airlines, Delta, Southwest Airlines, American Airlines, United are just some of the airlines that can typically offer cheap tickets to St. Peters. You can find their most affordable flights by using the “airline” search filter and then sorting prices from low to high. As a trusted partner of the world's leading airlines, Expedia offers you some of the best airfare deals to St. Peters and countless more destinations worldwide.

The most affordable airports to fly into

To view the cheapest airports to fly into for St. Peters, simply order your search results from lowest to highest price. Expedia's search tool compares flight prices for all airports close to your destination, so you don't have to manually search them one by one to find the cheapest flight to St. Peters. If you have a preferred place to fly into, take advantage of the “arrival airport” filter to narrow down your search on Expedia.

Save with a package

With Expedia's amazing package deals, you could save hundreds of dollars by booking your St. Peters plane tickets together with your accommodations, car rental, or activities. Just select the search wizard's “package” option to view some of the cheapest deals. Look out for the green savings label to see how much you're saving.

Date flexibility for the cheapest flights to St. Peters

If you can be flexible with your travel dates, it's a good idea to broaden your search by comparing prices on different days. This will open up more options, meaning you could uncover a less expensive flight to St. Peters.

Stopover savings

The cheapest tickets to St. Peters are sometimes those with a stopover. Book one of these flights, and you'll change planes at an airport en route to St. Peters. While the overall travel time might be longer than a non-stop flight, you may decide it's worth it for the money saved.

Get Expedia's Price Drop Protection

Price Drop Protection means that if your flight gets cheaper after booking, you'll be credited the difference*. This gives you peace of mind that you're getting one of the cheapest flights to St. Peters for your chosen departure. Expedia's Price Drop Protection is available for a small fee but is free to One Key Gold and Platinum tier members.

*Terms apply.

Use our Price Tracking feature

Expedia's Price Tracking feature is another great tool that removes the guesswork from finding cheap flights to St. Peters. Simply download the free Expedia app to your smart device and activate St. Peters flight price alerts for your travel dates. There's even a price predictor tool that uses historical data to indicate the best time to book, giving you peace of mind that you'll nab the lowest prices.

Book with Expedia

As well as Price Drop Protection and Price Tracking, Expedia's close partnership with a vast selection of the world's leading airlines means you're sure to find cheap flights to St. Peters. Plus, the One Key rewards program lets you earn real cash rewards on most bookings that you can use to save money on future trips. Best of all, it's free to join, and members often unlock exclusive discounts, too.

Disclaimer: ARC The statistics are based on average round-trip ticket prices between January and August 2023. The percentages you see are averages.

Tips to find the cheapest flights to St. Peters

Travel information

Destination airport
Lambert-St. Louis Intl.
Destination airport IATA code
STL
Destination city name
St. Louis
Roundtrip price
$46

Trending flights to St. Peters

Prices were available within the past 7 days and start at $23 for one-way flights and $46 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Frontier Airlines

Explore a world of travel with Expedia