How many flights from St. Louis to Phoenix are non-stop?

In the trailing 90 days, approximately 30% of flights from St. Louis to Phoenix have been non-stop. For flights that include stopovers, travelers typically experience a median of 2 stopovers. This indicates that while direct options are available, a significant portion of the routes involve connections.

What's the flight time from St. Louis to Phoenix?

The median direct flight time from St. Louis to Phoenix is 3 hours and 15 minutes, covering a distance of 2027 kilometers. For flights with one stop, the median travel time increases to 7 hours and 29 minutes. Travelers should account for these differences when planning their journeys, as connecting flights can add several hours to the total duration.

Are there frequently good prices on flights from St. Louis to Phoenix?

Historically, good prices on flights from St. Louis to Phoenix are frequent. This route is consistently observed to have favorable pricing. Travelers can often find competitive deals when planning their trips between these two cities.

Flights From St. Louis

To Phoenix

Cheap Flights from St. Louis to Phoenix

Browse current best options from St. Louis. Become a member to unlock all deals and get alerts when new deals appear.

Deals from

St. Louis

RatePunk searches hundreds of travel sites at once for deals on flights to Phoenix

Prices updated 2 days ago

405 airlines compared

80%+ AI score for best value

Fares are subject to change and may not be available for all dates. (Data last updated Jul 26, 2026.)

Today’s best flight deals from St. Louis to Phoenix

Explore current cheapest deals departing from St. Louis to Phoenix

2026-09-11 – 2026-09-14
STL - Phoenix
74% AI deal score
$262
$198
Round trip
2026-09-14 – 2026-09-19
STL - Phoenix
69% AI deal score
$257
$202
Round trip
2026-08-17 – 2026-08-20
STL - Phoenix
81% AI deal score
$396
$203
Round trip
2026-08-17 – 2026-08-24
STL - Phoenix
79% AI deal score
$366
$206
Round trip
2026-10-01 – 2026-10-05
STL - Phoenix
69% AI deal score
$259
$207
Round trip
2026-09-24 – 2026-09-28
STL - Phoenix
69% AI deal score
$265
$208
Round trip
2026-09-09 – 2026-09-14
STL - Phoenix
68% AI deal score
$257
$213
Round trip
2026-09-16 – 2026-09-23
STL - Phoenix
67% AI deal score
$250
$213
Round trip
2026-09-14 – 2026-09-23
STL - Phoenix
66% AI deal score
$236
$213
Round trip
2026-09-23 – 2026-10-07
STL - Phoenix
50% AI deal score
$228
$213
Round trip

St. Louis to Phoenix: Overview

Insights for flights from St. Louis to Phoenix

Right now, 6% of recent fares from St. Louis to Phoenix are classified as a good price. Fares for this route typically range from $347–$744, with a median of $455. Current fares are near the typical level for this route, and new deals appear almost daily.

When looking for cheap flights from St. Louis to Phoenix, you'll find that April is often the most affordable month, with a median fare of $219. Other budget-friendly options include January, with a median fare of $270, and February, where the median fare is $272.

For this route, most itineraries connect at least once, with only 30% of recent fares being direct flights from St. Louis to Phoenix. When connecting, the typical number of stopovers is 2.

A typical journey from St. Louis to Phoenix takes about 3h 15m for non-stop flights. However, since most itineraries include connections, a typical journey including connections can extend to 10h 49m.

The distance between St. Louis and Phoenix is 2027 km, which classifies this route as a medium-haul flight.

How much is a round trip from St. Louis to Phoenix

Regular price: $214 - $345

Prices are currently below the regular range for flights from St. Louis to Phoenix.

The regular price range for this route is typically between $214 and $345. The current lowest deal is $198 with Frontier Airlines, for travel from Sep 11-Sep 14.

now $198

Low $214

High $345

The cheapest time to fly from St. Louis to Phoenix

The cheapest month to fly from St. Louis to Phoenix is April, with a median price of $255. The most expensive month is May, with a median price of $796. Prices are generally lower from January to December.

April

Cheapest

Flights from $255

May

Most Expensive

Flights from $796

Jan

Feb

Apr

May

Jun

Jul

Aug

Sep

Oct

Nov

Dec

Direct flights from St. Louis to Phoenix

American Airlines

Last-minute flights going from St. Louis to Phoenix

Sat, Aug 1

⌛ Last-Minute

STL - Phoenix

St. Louis (STL) - Phoenix (PHX)

Frontier Airlines

$521

$344

One-way

Sun, Aug 2

⌛ Last-Minute

STL - Phoenix

St. Louis (STL) - Phoenix (PHX)

Frontier Airlines

$554

$367

One-way

Mon, Aug 3

⌛ Last-Minute

STL - Phoenix

St. Louis (STL) - Phoenix (PHX)

Frontier Airlines

$498

$349

One-way

Mon, Aug 3

⌛ Last-Minute

STL - Phoenix

St. Louis (STL) - Phoenix (PHX)

Frontier Airlines

$495

$349

One-way

Tue, Aug 4

⌛ Last-Minute

STL - Phoenix

St. Louis (STL) - Phoenix (PHX)

Frontier Airlines

$470

$333

One-way

Wed, Aug 5

⌛ Last-Minute

STL - Phoenix

St. Louis (STL) - Phoenix (PHX)

Frontier Airlines

$463

$335

One-way

Biggest price drops on these dates for flights from St. Louis to Phoenix

3 nights

Aug 2 - Aug 5

$554 → $367

34%

6 nights

Aug 1 - Aug 7

$521 → $344

34%

7 nights

Aug 17 - Aug 24

$367 → $206

44%

3 nights

Aug 6 - Aug 9

$460 → $303

34%

Popular Airports to fly from St. Louis to Phoenix

St. Louis - Phoenix route insights

💸 Price insights

Recent fares are below the typical level

Recent fares from St. Louis to Phoenix are below the typical level at $198.

📅 Best time to fly

Fly in April for the best prices

Historically, April is the cheapest month to fly from St. Louis to Phoenix, with a median price of $255.

⏱️ Flight duration

Direct flights take 3h 15m

The typical direct flight from St. Louis to Phoenix takes 3h 15m, while connecting flights take 10h 49m.

✈️ Airlines & availability

Connecting flights are dominant

Only 30% of recent flights from St. Louis to Phoenix are direct, with connecting flights being more common.

🏆 Airline highlight

American Airlines offers direct flights

American Airlines provides direct flight options on this route.

🎯 Booking tip

Deals are frequent on this route

Deals on flights from St. Louis to Phoenix are frequent, appearing often in the last 30 days.

St. Louis main airports to depart from

St. Louis Lambert International (STL)

Cheapest

St. Louis Lambert International Airport is a good choice for flights from St. Louis to Phoenix.

📍 ~20 km from city center (reachable by car)

💸 Flights from ~$196

Phoenix main airports to arrive at

Phoenix Sky Harbor International (PHX)

Cheapest

Phoenix Sky Harbor International Airport is a convenient arrival option for flights from St. Louis to Phoenix.

📍 ~6 km from Phoenix city center (reachable by car)

💸 Flights from ~$196

Airports nearby Phoenix used as alternative

Tucson International (TUS)

Tucson International is a good alternative, offering a range of domestic and some international connections.

📍 ~180 km from Phoenix (reachable by car)

💸 Flights from ~$253

Frequently Asked Questions About Flights to Phoenix

Historically, the lowest prices for flights from St. Louis to Phoenix are found when booking 7-13 days in advance, with an average price of $329. Booking within 6 days of departure typically sees a significant price increase, with an average price of $957. Conversely, booking 28-59 days out shows an average price of $354, which is still higher than the optimal window. Planning your trip within the 7-13 day window generally yields the most favorable fares.

Across the trailing quarter, a good price for a flight from St. Louis to Phoenix is considered to be $347 or less. This threshold represents the lowest 25% of prices observed over a 90-day period. The median price for this route historically stands at $455, while prices can go up to $744 or more for the higher end of the market.

Historically, April is the cheapest month to fly from St. Louis to Phoenix, with a median price of $219. January and February also offer competitive prices, with median fares of $270 and $272 respectively. The annual median price for this route is $455, indicating that these months provide significant savings compared to the yearly average.

Related routes

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Flights to Phoenix from other cities

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St. Louis to Phoenix: Overview

Insights for flights from St. Louis to Phoenix

For this route, most itineraries connect at least once, with only 30% of recent fares being direct flights from St. Louis to Phoenix. When connecting, the typical number of stopovers is 2.

The distance between St. Louis and Phoenix is 2027 km, which classifies this route as a medium-haul flight.

How much is a round trip from St. Louis to Phoenix

Regular price: $214 - $345

Prices are currently below the regular range for flights from St. Louis to Phoenix.

The regular price range for this route is typically between $214 and $345. The current lowest deal is $198 with Frontier Airlines, for travel from Sep 11-Sep 14.

now $198

Low $214

High $345

The cheapest time to fly from St. Louis to Phoenix

April

Cheapest

Flights from $255

May

Most Expensive

Flights from $796

Jan

Feb

Apr

May

Jun

Jul

Aug

Sep

Oct

Nov

Dec