£159 Cheap Flights from St Louis (STLA) to Phoenix (PHXA)

Q: How many airports are there in Phoenix?

There are 4 airports in Phoenix: Phoenix Sky Harbor, Phoenix Scottsdale Municipal, Phoenix-Deer Valley, and Phoenix-Mesa Gateway.

Q: How much are return flights from St Louis to Phoenix?

The best price we found for a return flight from St Louis to Phoenix is £159. 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.

Q: How long does it take to fly from St Louis to Phoenix?

3 hours and 24 minutes is the average flight time from St Louis to Phoenix.

Q: Which airlines fly direct from St Louis to Phoenix?

Southwest Airlines, American Airlines and Alaska Airlines fly direct from St Louis to Phoenix.

Q: How many flights are there a week from St Louis to Phoenix?

As of May 2025, there are 63 flights per week flying from St Louis to Phoenix.

Q: When is the cheapest time to fly from St Louis to Phoenix?

The cheapest month to fly from St Louis to Phoenix is usually August.

Q: Which is the cheapest airport to fly into in Phoenix?

If you're flying from St Louis, the cheapest airport near Phoenix is Phoenix Sky Harbor – which is 3.7 miles away from the centre of Phoenix. We've found flights into this airport from £159 .

Q: Which upcoming date is cheapest to fly from St Louis to Phoenix on?

After crunching the numbers on our flight calendar, we found that it is currently cheapest to fly from St Louis to Phoenix on Saturday, 16 August 2025 .

Q: Can I get a direct flight from St Louis to Phoenix?

Yes – the average flight time is 3 hours and 24 minutes.

Q: How can I get the best flight deal from St Louis to Phoenix?

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 Phoenix 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.

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Flight deals from St Louis to Phoenix

Looking for a cheap last-minute deal or the best return flight from St Louis to Phoenix? Find the lowest prices on one-way and return tickets right here.

Phoenix.£159 per passenger.Departing Fri, 13 Jun, returning Sun, 15 Jun.Return flight with Frontier Airlines.Outbound indirect flight with Frontier Airlines, departs from St Louis on Fri, 13 Jun, arriving in Phoenix Sky Harbor.Inbound indirect flight with Frontier Airlines, departs from Phoenix Sky Harbor on Sun, 15 Jun, arriving in St Louis.Price includes taxes and charges.From £159, select.

Phoenix.£159 per passenger.Departing Mon, 16 Jun, returning Mon, 18 Aug.Return flight with Frontier Airlines.Outbound indirect flight with Frontier Airlines, departs from St Louis on Mon, 16 Jun, arriving in Phoenix Sky Harbor.Inbound indirect flight with Frontier Airlines, departs from Phoenix Sky Harbor on Mon, 18 Aug, arriving in St Louis.Price includes taxes and charges.From £159, select.

Phoenix.£159 per passenger.Departing Thu, 28 Aug, returning Mon, 1 Sep.Return flight with Frontier Airlines.Outbound indirect flight with Frontier Airlines, departs from St Louis on Thu, 28 Aug, arriving in Phoenix Sky Harbor.Inbound indirect flight with Frontier Airlines, departs from Phoenix Sky Harbor on Mon, 1 Sep, arriving in St Louis.Price includes taxes and charges.From £159, select.

Phoenix.£159 per passenger.Departing Sat, 16 Aug, returning Mon, 18 Aug.Return flight with Frontier Airlines.Outbound indirect flight with Frontier Airlines, departs from St Louis on Sat, 16 Aug, arriving in Phoenix Sky Harbor.Inbound indirect flight with Frontier Airlines, departs from Phoenix Sky Harbor on Mon, 18 Aug, arriving in St Louis.Price includes taxes and charges.From £159, select.

Phoenix.£161 per passenger.Departing Thu, 2 Oct, returning Sun, 5 Oct.Return flight with Frontier Airlines.Outbound indirect flight with Frontier Airlines, departs from St Louis on Thu, 2 Oct, arriving in Phoenix Sky Harbor.Inbound indirect flight with Frontier Airlines, departs from Phoenix Sky Harbor on Sun, 5 Oct, arriving in St Louis.Price includes taxes and charges.From £161, select.

Phoenix.£165 per passenger.Departing Sat, 31 May, returning Fri, 6 Jun.Return flight with Frontier Airlines.Outbound indirect flight with Frontier Airlines, departs from St Louis on Sat, 31 May, arriving in Phoenix Sky Harbor.Inbound indirect flight with Frontier Airlines, departs from Phoenix Sky Harbor on Fri, 6 Jun, arriving in St Louis.Price includes taxes and charges.From £165, select.

Phoenix.£167 per passenger.Departing Sun, 29 Jun, returning Tue, 8 Jul.Return flight with Frontier Airlines.Outbound indirect flight with Frontier Airlines, departs from St Louis on Sun, 29 Jun, arriving in Phoenix Sky Harbor.Inbound indirect flight with Frontier Airlines, departs from Phoenix Sky Harbor on Tue, 8 Jul, arriving in St Louis.Price includes taxes and charges.From £167, select.

Phoenix.£176 per passenger.Departing Tue, 27 May, returning Fri, 30 May.Return flight with Frontier Airlines.Outbound indirect flight with Frontier Airlines, departs from St Louis on Tue, 27 May, arriving in Phoenix Sky Harbor.Inbound indirect flight with Frontier Airlines, departs from Phoenix Sky Harbor on Fri, 30 May, arriving in St Louis.Price includes taxes and charges.From £176, select.

Find the cheapest month to fly from St Louis to Phoenix

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

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Direct flights from St Louis to Phoenix

Alternative St Louis to Phoenix routes

Looking for the cheapest, fastest or easiest route from St Louis to Phoenix? You could fly into the following airports instead.

St Louis to Phoenix: Flight information

The things to know before you go.

Cheapest flight found	£159
Cheapest month to fly	August
Average flight time	3 hrs, 24 mins
Most popular airline	Southwest Airlines
Average flights per week	63

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

How many airports are there in Phoenix?

How much are return flights from St Louis to Phoenix?

How long does it take to fly from St Louis to Phoenix?

Which airlines fly direct from St Louis to Phoenix?

How many flights are there a week from St Louis to Phoenix?

When is the cheapest time to fly from St Louis to Phoenix?

Which is the cheapest airport to fly into in Phoenix?

Which upcoming date is cheapest to fly from St Louis to Phoenix on?

Can I get a direct flight from St Louis to Phoenix?

How can I get the best flight deal from St Louis to Phoenix?

When is the best time to book flights to Phoenix?

What’s the weather like in Phoenix?

Which is the cheapest airline to fly from St Louis to Phoenix with?

How to find cheap flights to Phoenix from St Louis

Looking for cheap tickets from St Louis to Phoenix? Here are a few tips on how to secure the best flight price and make your journey as smooth as possible.

Simply hit 'search'. From British Airways to international carriers like Emirates, we compare all major airlines along with the most popular online travel agents to find the cheapest plane tickets from St Louis to Phoenix. And with us there are no hidden fees - what you see is what you pay.
Compare flight deals to Phoenix from St Louis from over 1,000 providers. Then choose the cheapest or fastest plane tickets.
Flex your dates to find the best St Louis-Phoenix ticket prices. If you are flexible when it comes to your travel dates, use Skyscanner's 'Whole month' tool to find the cheapest month, and even day to fly to Phoenix from St Louis.
Set up a Price Alert. You can easily track the fare of your cheap St Louis-Phoenix flights by creating an alert. Whenever prices go down or up, you'll get an email or push notification to help make sure you get the best possible flight deal.
Fly without stops. Only interested in direct flights between St Louis and Phoenix? Make sure to tick 'Direct flights only' when performing a search. If there are direct flights available on the route, these will appear in the results.
Find the cheapest Business class flights from St Louis and Phoenix. We scour the internet for the best Business, Premium Economy and First Class flight fares to Phoenix, too. Check the difference in price as you search – you might just chance upon a last-minute low fare. Note that not all cabin classes are available for every destination or airline.
Include nearby airports in your search. Widen your search for St Louis to Phoenix flight deals by selecting the "add nearby airports" option. This will allow you to see flight prices for all the nearest airports at your departure point and your destination and could help you save next time you travel.

Combine your flight to Phoenix from St Louis with hotels and car hire

Once you've secured your cheap flight ticket from St Louis to Phoenix, discover the best prices and exclusive rates for hotels in Phoenix or nearby. You can also compare hundreds of car hire companies in one go so that you get the best car hire price for your trip.