Cheap flights from St. Louis (STL) to Phoenix from $59

Currently, January is the cheapest month in which you can book a flight from St. Louis to Phoenix (average of $251). Flying from St. Louis to Phoenix in June is currently the most expensive (average of $340). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

• What airport do you fly from for flights from St. Louis to Phoenix?

  Located just 12.7 mi from the city center, Lambert-St Louis is the airport most travelers will use when flying to Phoenix from St. Louis. Booking flights from Lambert-St Louis (STL) to Phoenix should be relatively easy as there are 10 daily outbound flights to Phoenix from 5 different airlines.

• Can I find flights from St. Louis to Phoenix for under $100 on Cheapflights?

  Yes, there are multiple flights from St. Louis to Phoenix for under $100. The cheapest flight booked recently is on Frontier for just $94, but on average you can expect to pay $116.

• Are there nonstop flights from St. Louis to Phoenix for under $100 on Cheapflights?

  Cheapflights has at least 20 direct flights from St. Louis to Phoenix under $100. A good price for a nonstop flight from St. Louis to Phoenix is less than $184.

• Are there last-minute flights available from St. Louis to Phoenix for under $100?

  There are currently 20+ open flights from St. Louis to Phoenix within the next 7 days for less than $100.

• What are the cheapest airlines flying from St. Louis to Phoenix round-trip?

  Currently priced at $94, Frontier will fly you from St. Louis to Phoenix and back. In addition to Frontier, many other airlines offer competitively priced options for your trip. Search Cheapflights for deals from Spirit Airlines and American Airlines - these airlines can fly you to your destination from $121 and $131, respectively. These flights start at 76% lower than the current average price 3 months from now.

• What are the cheapest airlines to fly from St. Louis to Phoenix one-way?

  For one-way options, check prices for Frontier. According to our data, you can fly for as low as $59. Users have also found prices from $60 and $66 on Spirit Airlines and American Airlines, respectively.

• What are the most popular airlines that fly from St. Louis to Phoenix?

  When booking a flight from St. Louis to Phoenix, you may want to consider flying on American Airlines, Delta or Frontier as they are the most popular for this route.

• What are the most reliable airlines from St. Louis to Phoenix?

  No one likes to see their flight delayed. When booking a flight from St. Louis to Phoenix consider choosing Frontier (100%), American Airlines (89%) or Alaska Airlines (89%) as they are the most reliable in getting you off to your destination on time.

• What are the cheapest flights from St. Louis to Phoenix?

  While on average a flight from St. Louis to Phoenix is generally $735, our data shows the cheapest flight currently is $60. When looking at the most popular route, (Lambert-St Louis - Phoenix Sky Harbor Intl), you can expect to pay $97 for that flight.

• What does STL to PHX mean?

  This is defined as Lambert-St Louis Airport (STL) and Phoenix Sky Harbor Intl Airport (PHX). Codes like Phoenix Sky Harbor Intl Airport are often used to just call airports uniquely. This flight route has multiple associated airports, so we think it might be helpful to learn the name and codes of them as well. They are Phoenix-Mesa Gateway Airport (AZA), Prescott Airport (PRC), Phoenix Scottsdale Municipal Airport (SCF).

• Can I find deals for flights from St. Louis to Phoenix that include extra baggage allowance?

  The amount of baggage you can bring on your St. Louis to Phoenix flight depends on the airline and the type of fare you've chosen. After entering your flight details, you'll be able to view the specific baggage policies for each deal in the search results. Keep in mind that certain deals may offer additional baggage allowance.

• Can I find deals on flights from St. Louis to Phoenix with specific airlines?

  Yes, Cheapflights allows you to browse and filter St. Louis to Phoenix flight deals by airline. After entering your origin and destination, use the available filters to view flights offered by airlines.

• Can I find deals for flights from St. Louis to Phoenix that include hotel bookings?

  Yes. In addition to deals on St. Louis to Phoenix flights, Cheapflights offers vacation packages that include both flights and hotel.

• How can I find direct flights from St. Louis to Phoenix?

  After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from St. Louis to Phoenix.

• Can I find deals for business class flights from St. Louis to Phoenix?

  Yes. Cheapflights offers flight deals from St. Louis to Phoenix by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

• Can I find deals for flights from St. Louis to Phoenix that allow pets onboard?

  Many airlines flying from St. Louis to Phoenix offer the option to travel with pets. After selecting a flight deal, you can find more information about the airline's pet policy on their official website or by contacting the airline directly. Please note that additional fees and restrictions may apply.

• Can I find deals on last-minute flights from St. Louis to Phoenix?

  Yes, you can often find last-minute deals on St. Louis to Phoenix flights on Cheapflights. However, these deals can vary and may not always be available. We recommend checking back frequently or signing up for price alerts for the most up-to-date deals.

• How recently were the St. Louis to Phoenix flight deals updated?

  The St. Louis to Phoenix flight deals you see on this page were last updated on 4/26.