Cheap Flights from Phoenix-Mesa Gateway to St Louis

Compare Phoenix-Mesa Gateway to St Louis flight deals

Find the cheapest month or even day of the year to fly to St Louis

Book the best St Louis fare with no extra fees

Flight deals from Phoenix-Mesa Gateway to St Louis

Looking for a cheap last-minute deal or the best return flight from Phoenix-Mesa Gateway Airport to St Louis Airport? If you want to travel next month, return fares start from R 11,055. Find the lowest prices on one-way and return tickets right here.

Find the cheapest month to fly from Phoenix-Mesa Gateway to St Louis

We’re always keeping an eye on fares, so you can find the best one in seconds. It looks like Phoenix-Mesa Gateway to St Louis flights are currently cheapest in June.

Phoenix-Mesa Gateway to St Louis: Alternative routes

Compare routes from Phoenix-Mesa Gateway to St Louis below. You may find an airport to fly into that's cheaper, faster, or easier than St Louis.

Phoenix to St Louis: Flight information

The things to know before you go.
Cheapest flight foundR 2,817
Cheapest month to flyJune

Finding cheap flights from Phoenix-Mesa Gateway to St Louis: Frequently asked questions

The best price we found for a return flight from Phoenix-Mesa Gateway to St Louis is R 6,863. This is an estimate based on information collected from different airlines and travel providers over the last 4 days and is subject to change and availability.
Currently, there are no airlines that fly direct from Phoenix-Mesa Gateway to St Louis. But we found flights with one or more stops from R 6,863.
As of May 2026, there are no flights flying from Phoenix-Mesa Gateway to St Louis.
The cheapest month to fly from Phoenix-Mesa Gateway to St Louis is usually May.
After crunching the numbers on our flight calendar, we found that it's currently cheapest to fly from Phoenix-Mesa Gateway Airport to St Louis Airport on Friday, 29 May 2026.
No airlines currently offer direct flights between Phoenix-Mesa Gateway Airport and St Louis Airport. Most routes have one or more stops.
We show every price from over 1,200 airlines and travel agents, comparing them all so you don’t have to. If you know you want to fly to St Louis but you’re not ready to book, set up a Price Alert. We’ll track prices for you, and let you know when they rise or fall.
We crunched all the numbers in our flight calendar and it looks like the cheapest time to book a flight to St Louis is around 40 days in advance, so don’t leave your flight to the last minute.
Currently, Allegiant Air offers the cheapest flight tickets to St Louis.

Travelling from Phoenix-Mesa Gateway Airport (AZA) to Lambert-St. Louis International Airport (STL): what you need to know

  • The timezone in St Louis is UTC-5, which is two hours ahead of Phoenix.

  • Arrive at the airport on time so you don't miss your AZA to STL flight. Be there at least two hours ahead for international flights and an hour early for domestic departures to avoid a last-minute sprint to the gate.

  • You'll likely experience longer lines in popular months such as December. Arriving up to four hours in advance for an international flight and two hours for domestic departures will give you ample time for security and boarding.

  • We make it a piece of cake to book a flight with a stopover. To see your options for tickets from Phoenix-Mesa Gateway Airport to Lambert-St. Louis International Airport, deselect 'Direct flights only.' Then, choose a flight that has a stop long enough to tour your chosen city. Stopovers between AZA and STL include:

    • Minneapolis-St. Paul International Airport

    • William P. Hobby Airport

    • Wichita Dwight D. Eisenhower National Airport

How to find the cheapest flights from Phoenix-Mesa Gateway Airport (AZA) to Lambert-St. Louis International Airport (STL)

  • The cheapest price we've seen for a one-way Phoenix-Mesa Gateway Airport to Lambert-St. Louis International Airport flight is R 2,817. A round-trip fare right now is R 6,863. Depending on the availability when you book, these fares may change.

  • Don't leave things to the last moment. You're more likely to get cheap tickets from AZA to STL if you book early. Airlines often have some amazing early bird rates.

  • The 'Whole month' search function shows you the cheapest flights from Phoenix-Mesa Gateway Airport to Lambert-St. Louis International Airport across every month. It's a great way to find a bargain if your dates are flexible.

  • There's no need to check every day to find out if fares have gone down when you create a Price Alert. We'll send you an update the moment the price changes on cheap flights from AZA to STL.

  • Tailor your trip using filters. Pick your ideal departure and arrival times, total journey duration and airlines. You can also sort results by 'Best,' 'Fastest' or 'Cheapest' flights from Phoenix-Mesa Gateway Airport to Lambert-St. Louis International Airport.

Handy information about Phoenix-Mesa Gateway Airport (AZA)

  • AZA is located at 6033 S. Sossaman Rd..

  • When it comes to Phoenix-Mesa Gateway Airport's on-time performance, data shows 78.65% of flights complete their journey on time.

  • To reach Phoenix-Mesa Gateway Airport from central Phoenix, it'll take about 40 minutes if you're travelling by car. This depends on traffic, however. It's approximately 56 kilometres from the airport to the city centre.

  • Booked an early flight from Phoenix-Mesa Gateway Airport to Lambert-St. Louis International Airport? Avoid the hassle of rushing to the terminal (and get some extra shut-eye) by picking one of these stays close to AZA:

Arriving at Lambert-St. Louis International Airport (STL)

Getting from Lambert-St. Louis International Airport (STL) to central St Louis

  • You'll find STL at 10701 Lambert International Blvd..

  • Lambert-St. Louis International Airport to central St Louis has a drive time of around 20 minutes. It's approximately 26 kilometres away.

  • It typically takes 35 minutes to get there by public transport.

When to fly to Lambert-St. Louis International Airport (STL)

  • The quietest month for a flight from Phoenix-Mesa Gateway Airport to Lambert-St. Louis International Airport is April, while July is the most popular. Choose the ideal time to visit St Louis based on whether you prefer a laid-back vibe or a more bustling atmosphere.

  • Lock in your flight from Phoenix-Mesa Gateway Airport to Lambert-St. Louis International Airport for July if you'd like to go to St Louis during its warmest month. Expect temperatures of between 17ºC (63ºF) and 33ºC (91ºF).

  • January sees average temperatures of between -8ºC (18ºF) and 7ºC (45ºF). Search for cheap tickets from AZA to STL sometime around then if you like cooler conditions.

Explore more of United States

  • You've visited St Louis, now it's time to explore other corners of United States. Travel about 418 kilometres north-east to Chicago to check off its popular sights. From Millennium Park to Art Institute of Chicago and LandShark Beer Garden at Navy Pier, there's plenty to keep you on the go.

  • Indianapolis is another essential stop in United States and is around 370 kilometres east of St Louis. No trip is complete without seeing The Children's Museum of Indianapolis, Indianapolis Museum of Art and Indianapolis Zoo.

Prices shown on this page are estimated lowest prices only. Found in the last 45 days.