$44 Cheap Flights to St. Peters, MO

Popular airlines to St. Peters

How much is the cheapest flight to St. Peters?

Prices were available within the past 7 days and start at $44 for one-way flights and $83 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Frontier Airlines
Spirit Airlines
Southwest Airlines
United
Hawaiian Airlines

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

August is typically the cheapest month to fly

From $157 - $695 per traveler.

Graph displaying average flight prices per month

Alternative airports near St. Peters

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

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

September 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 2025 starts from from $83, while one-way tickets start from from $44. 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, Spirit Airlines, Southwest Airlines, American Airlines, United, Hawaiian Airlines 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.

Frequently asked questions

What month is the cheapest to fly to St. Peters?
The cheapest month for flights to St. Peters is typically October *. Fuel your travel dreams without breaking the bank by flying when fares are at their lowest. *Cheapest month to fly is based on the month with the cheapest flight found on Expedia.com in the next 330 days.
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.
Flights to St. Peters information
Destination airport
Lambert-St. Louis Intl.
Destination airport IATA code
STL
Destination city name
St. Louis
Roundtrip price
$82

Trending flights to St. Peters

Prices were available within the past 7 days and start at $44 for one-way flights and $83 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Frontier Airlines

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*Available to One Key members.