$28 Cheap Flights to St. Peters, MO

View $28 flight on Wed, Jun 17, 2026Opens in a new window

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 $28 for one-way flights and $63 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Frontier Airlines
Tue, May 26 - Thu, May 28
DEN
Denver
STL
St. Louis
$63 Roundtrip, just found
$63
Roundtrip
just found
Select Frontier Airlines flight, departing Tue, May 26 from Denver to St. Louis, returning Thu, May 28, priced at $63 just found
United
Wed, Jun 24 - Wed, Jul 1
DEN
Denver
STL
St. Louis
$201 Roundtrip, just found
$201
Roundtrip
just found
Select United flight, departing Wed, Jun 24 from Denver to St. Louis, returning Wed, Jul 1, priced at $201 just found
Southwest Airlines
Wed, Jun 24 - Wed, Jul 1
DEN
Denver
STL
St. Louis
$201 Roundtrip, just found
$201
Roundtrip
just found
Select Southwest Airlines flight, departing Wed, Jun 24 from Denver to St. Louis, returning Wed, Jul 1, priced at $201 just found
American Airlines
Sat, May 2 - Tue, May 5
DFW
Dallas
STL
St. Louis
$217 Roundtrip, found 3 hours ago
$217
Roundtrip
found 3 hours ago
Select American Airlines flight, departing Sat, May 2 from Dallas to St. Louis, returning Tue, May 5, priced at $217 found 3 hours ago
Delta
Tue, Jun 23 - Tue, Jun 30
DEN
Denver
STL
St. Louis
$221 Roundtrip, just found
$221
Roundtrip
just found
Select Delta flight, departing Tue, Jun 23 from Denver to St. Louis, returning Tue, Jun 30, priced at $221 just found

Alternative airports near St. Peters

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

Select flight to Lambert-St. Louis Intl. STL. Cheapest option available. Average driving time to city center is 21 minutes. Flights from $306
STL
Lambert-St. Louis Intl.
Cheapest
Average driving time to city center21 min
Flights from $306

Frequently asked questions

What month is the cheapest to fly to St. Peters?
The cheapest month to fly to St. Peters is May 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.

 

Travel information

Destination airport
Lambert-St. Louis Intl.
Destination airport IATA code
STL
Destination city name
St. Louis
Roundtrip price
$63

Trending flights to St. Peters

Prices were available within the past 7 days and start at $28 for one-way flights and $63 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Frontier Airlines
Tue, May 26 - Thu, May 28
DEN
Denver
STL
St. Louis
$63 Roundtrip, just found
$63
Roundtrip
just found
Select Frontier Airlines flight, departing Tue, May 26 from Denver to St. Louis, returning Thu, May 28, priced at $63 just found

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