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 two stops. This means a significant portion of flights on this route will involve at least one connection.

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

The typical direct flight time from St. Louis to Phoenix is 3 hours and 15 minutes, covering a distance of 2027 kilometers. Flights with one stop, however, usually take considerably longer, with a median duration of 7 hours and 29 minutes. Travelers should account for this difference when planning their journey.

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

Historically, good prices on flights from St. Louis to Phoenix have been frequent. This route is classified as one with regular opportunities for favorable deals. Travelers can often find competitive pricing 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 1 day ago

461 airlines compared

80%+ AI score for best value

Fares are subject to change and may not be available for all dates. (Data last updated Sep 14, 2026.)

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

Explore current cheapest deals departing from St. Louis to Phoenix

2026-11-02 – 2026-11-06
STL - Phoenix
82% AI deal score
$242
$134
Round trip
2026-11-09 – 2026-11-14
STL - Phoenix
78% AI deal score
$240
$155
Round trip
2026-10-03 – 2026-10-07
STL - Phoenix
79% AI deal score
$268
$163
Round trip
2026-11-06 – 2026-11-13
STL - Phoenix
68% AI deal score
$231
$195
Round trip
2026-10-02 – 2026-10-07
STL - Phoenix
74% AI deal score
$256
$196
Round trip
2026-11-04 – 2026-11-16
STL - Phoenix
49% AI deal score
$207
$197
Round trip
2026-11-16 – 2026-11-18
STL - Phoenix
69% AI deal score
$244
$197
Round trip
2026-10-01 – 2026-10-07
STL - Phoenix
69% AI deal score
$247
$201
Round trip
2026-10-23 – 2026-10-24
STL - Phoenix
69% AI deal score
$256
$202
Round trip
2026-10-17 – 2026-10-21
STL - Phoenix
69% AI deal score
$259
$208
Round trip

St. Louis to Phoenix: Overview

Insights for flights from St. Louis to Phoenix

Right now, only 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, suggesting a balanced market for this route.

For travelers seeking cheap flights from St. Louis to Phoenix, the cheapest time to fly is often in April, with a median fare of $219. Other affordable months include January, where the median fare is $270, and February, with a median fare of $272.

The journey from St. Louis to Phoenix covers a distance of 2027 kilometers, classifying it as a medium-haul route. This distance typically translates to a significant travel time, especially with connections.

A typical journey from St. Louis to Phoenix takes about 3h 15m. However, most itineraries connect at least once, and connecting flights typically involve 2 stopovers. This means that while the direct flight time is 3h 15m, the overall travel duration for connecting itineraries is significantly longer.

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

Regular price: $201 - $382

Prices are currently below the regular range.

The regular price range for flights from St. Louis to Phoenix is typically between $201 and $382. The current lowest deal is $134 with Frontier Airlines, for travel from Nov 2-Nov 6.

now $134

Low $201

High $382

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

Frontier Airlines

American Airlines

Alaska Airlines, Inc.

Allegiant Air

Last-minute flights going from St. Louis to Phoenix

Tue, Sep 15

⌛ Last-Minute

STL - Phoenix

St. Louis (STL) - Phoenix (PHX)

Frontier Airlines

$482

$418

One-way

Tue, Sep 15

⌛ Last-Minute

STL - Phoenix

St. Louis (STL) - Phoenix (PHX)

Frontier Airlines

$474

$419

One-way

Tue, Sep 15

⌛ Last-Minute

STL - Phoenix

St. Louis (STL) - Phoenix (PHX)

Frontier Airlines

$471

$420

One-way

Wed, Sep 16

⌛ Last-Minute

STL - Phoenix

St. Louis (STL) - Phoenix (PHX)

Frontier Airlines

$480

$420

One-way

Fri, Oct 2

⌛ Last-Minute

STL - Phoenix

St. Louis (STL) - Phoenix (PHX)

Frontier Airlines

$269

$225

One-way

Fri, Oct 2

⌛ Last-Minute

STL - Phoenix

St. Louis (STL) - Phoenix (PHX)

Frontier Airlines

$232

$270

One-way

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

4 nights

Nov 2 - Nov 6

$242 → $135

44%

4 nights

Oct 3 - Oct 7

$264 → $164

38%

1 night

Sep 18 - Sep 19

$463 → $378

18%

5 nights

Nov 9 - Nov 14

$239 → $156

35%

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 $134.

📅 Best time to fly

April is historically the cheapest month to fly

Historically, April is the cheapest month to fly from St. Louis to Phoenix, with a median price of $219.

⏱️ Flight duration

Direct flights take 3h 15m

The median flight time for a direct flight from St. Louis to Phoenix is 3h 15m.

✈️ Airlines & availability

Connecting flights are more common

Connecting flights are more common, with a median of 2 stopovers, while direct flights make up 30% of routes.

🏆 Airline highlight

Frontier Airlines offers many direct deals

Frontier Airlines has 80 direct deals, making it a frequent choice for this route.

🎯 Booking tip

Deals appear frequently on this route

Deals for flights from St. Louis to Phoenix appear frequently, with new deals every 30 days.

St. Louis main airports to depart from

St. Louis Lambert International (STL)

Cheapest

St. Louis Lambert International Airport is a convenient departure point for flights to Phoenix.

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

💸 Flights from ~$164

Phoenix main airports to arrive at

Phoenix Sky Harbor International (PHX)

Cheapest

Phoenix Sky Harbor International Airport is a primary gateway to Phoenix and the surrounding Arizona region.

📍 ~6 km from Phoenix city center (reachable by car, bus, or rail).

💸 Flights from ~$163

Airports nearby Phoenix used as alternative

Tucson International (TUS)

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

📍 ~180 km from Phoenix (reachable by car)

💸 Flights from ~$353

Business & First Class Flight Deals to Phoenix

Discover luxury on the budget with premium cabin class on flights from St. Louis to Phoenix.

Elite

Best Elite deals to Phoenix

Exclusive daily First Class, Business Class, and Premium Economy flight deals, refreshed every 24 hours.

From STL

Elite

Oct 17

Phoenix, United States

73% AI deal score

$1,493

$1,135

Save $358

United Airlines

Business Class

From STL

Elite

Dec 21

Phoenix, United States

73% AI deal score

$1,525

$1,165

Save $360

United Airlines

Business Class

From STL

Elite

Sep 15

Phoenix, United States

72% AI deal score

$3,189

$2,336

Save $853

Alaska Airlines, Inc.

Business Class

From STL

Elite

Oct 23

Phoenix, United States

72% AI deal score

$1,429

$1,165

Save $264

United Airlines

Business Class

From STL

Elite

Oct 26

Phoenix, United States

71% AI deal score

$2,274

$1,715

Save $559

Alaska Airlines, Inc.

Business Class

From STL

Elite

Oct 23

Phoenix, United States

71% AI deal score

$2,135

$1,715

Save $420

Alaska Airlines, Inc.

Business Class

From STL

Elite

Oct 20

Phoenix, United States

71% AI deal score

$2,316

$1,740

Save $576

Alaska Airlines, Inc.

Business Class

From STL

Elite

Sep 29

Phoenix, United States

71% AI deal score

$2,427

$1,919

Save $508

Alaska Airlines, Inc.

Business Class

From STL

Elite

Sep 30

Phoenix, United States

71% AI deal score

$2,683

$2,119

Save $564

Alaska Airlines, Inc.

Business Class

From STL

Elite

Sep 15

Phoenix, United States

71% AI deal score

$2,798

$2,148

Save $650

Alaska Airlines, Inc.

Business Class

From STL

Elite

Sep 15

Phoenix, United States

71% AI deal score

$2,802

$2,148

Save $654

Alaska Airlines, Inc.

Business Class

From STL

Elite

Sep 22

Phoenix, United States

71% AI deal score

$2,906

$2,240

Save $666

Alaska Airlines, Inc.

Business Class

Frequently Asked Questions About Flights to Phoenix

Historically, the best prices for flights from St. Louis to Phoenix are found when booking 7-13 days in advance. During this period, the average price is typically around $329. Booking too early, such as 28-59 days out, sees prices rise to an average of $354. Waiting until 0-6 days before departure can result in significantly higher costs, with an average price of $957.

Across the trailing quarter, a good price for a flight from St. Louis to Phoenix is considered to be $347 or less. The median price for this route has historically been $455. Prices can go higher, with 75% of deals observed at $744 or less.

Historically, April has offered the cheapest flights from St. Louis to Phoenix, with a median price of $219. January and February also tend to be more affordable, with median prices of $270 and $272 respectively. The annual median price for this route is $455, indicating that these months offer significant savings.

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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

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

Regular price: $201 - $382

Prices are currently below the regular range.

The regular price range for flights from St. Louis to Phoenix is typically between $201 and $382. The current lowest deal is $134 with Frontier Airlines, for travel from Nov 2-Nov 6.

now $134

Low $201

High $382

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

Direct flights from St. Louis to Phoenix

Frontier Airlines

American Airlines

Alaska Airlines, Inc.

Allegiant Air

Last-minute flights going from St. Louis to Phoenix

Tue, Sep 15

⌛ Last-Minute

STL - Phoenix

St. Louis (STL) - Phoenix (PHX)

Frontier Airlines

$482

$418

One-way

Tue, Sep 15

⌛ Last-Minute

STL - Phoenix

St. Louis (STL) - Phoenix (PHX)

Frontier Airlines

$474

$419

One-way

Tue, Sep 15

⌛ Last-Minute

STL - Phoenix

St. Louis (STL) - Phoenix (PHX)

Frontier Airlines

$471

$420

One-way

Wed, Sep 16

⌛ Last-Minute

STL - Phoenix

St. Louis (STL) - Phoenix (PHX)

Frontier Airlines

$480

$420

One-way

Fri, Oct 2

⌛ Last-Minute

STL - Phoenix

St. Louis (STL) - Phoenix (PHX)

Frontier Airlines

$269

$225

One-way

Fri, Oct 2

⌛ Last-Minute

STL - Phoenix

St. Louis (STL) - Phoenix (PHX)

Frontier Airlines

$232

$270

One-way

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

4 nights

Nov 2 - Nov 6

$242 → $135

44%

4 nights

Oct 3 - Oct 7

$264 → $164

38%

1 night

Sep 18 - Sep 19

$463 → $378

18%

5 nights

Nov 9 - Nov 14

$239 → $156

35%

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 $134.

📅 Best time to fly

April is historically the cheapest month to fly

Historically, April is the cheapest month to fly from St. Louis to Phoenix, with a median price of $219.

⏱️ Flight duration

Direct flights take 3h 15m

The median flight time for a direct flight from St. Louis to Phoenix is 3h 15m.

✈️ Airlines & availability

Connecting flights are more common

Connecting flights are more common, with a median of 2 stopovers, while direct flights make up 30% of routes.

🏆 Airline highlight

Frontier Airlines offers many direct deals

Frontier Airlines has 80 direct deals, making it a frequent choice for this route.

🎯 Booking tip

Deals appear frequently on this route

Deals for flights from St. Louis to Phoenix appear frequently, with new deals every 30 days.

St. Louis main airports to depart from

St. Louis Lambert International (STL)

Cheapest

St. Louis Lambert International Airport is a convenient departure point for flights to Phoenix.

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

💸 Flights from ~$164

Phoenix main airports to arrive at

Phoenix Sky Harbor International (PHX)

Cheapest

Phoenix Sky Harbor International Airport is a primary gateway to Phoenix and the surrounding Arizona region.

📍 ~6 km from Phoenix city center (reachable by car, bus, or rail).

💸 Flights from ~$163

Airports nearby Phoenix used as alternative

Tucson International (TUS)

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

Phoenix, United States

71% AI deal score

$2,906

$2,240

Save $666

Alaska Airlines, Inc.

Business Class

Frequently Asked Questions About Flights to Phoenix

Cheap Flights from St. Louis to Phoenix

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

St. Louis to Phoenix: Overview

Insights for flights from St. Louis to Phoenix

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

The cheapest time to fly from St. Louis to Phoenix

Direct flights from St. Louis to Phoenix

Last-minute flights going from St. Louis to Phoenix

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

Popular Airports to fly from St. Louis to Phoenix

St. Louis - Phoenix route insights

Recent fares are below the typical level

April is historically the cheapest month to fly

Direct flights take 3h 15m

Connecting flights are more common

Frontier Airlines offers many direct deals

Deals appear frequently on this route

St. Louis main airports to depart from

Phoenix main airports to arrive at

Airports nearby Phoenix used as alternative

Business & First Class Flight Deals to Phoenix

Best Elite deals to Phoenix

Oct 17

Dec 21

Sep 15

Oct 23

Oct 26

Oct 23

Oct 20

Sep 29

Sep 30

Sep 15

Sep 15

Sep 22

Frequently Asked Questions About Flights to Phoenix

How early should I book St. Louis to Phoenix flights to get the cheapest price?

What is a good price for a flight from St. Louis to Phoenix?

Which months have the cheapest flights from St. Louis to Phoenix?

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

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

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

Related routes

More routes from St. Louis

Flights to Phoenix from other cities

St. Louis to Phoenix: Overview

Insights for flights from St. Louis to Phoenix

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

The cheapest time to fly from St. Louis to Phoenix

Direct flights from St. Louis to Phoenix

Last-minute flights going from St. Louis to Phoenix

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

Popular Airports to fly from St. Louis to Phoenix

St. Louis - Phoenix route insights

Recent fares are below the typical level

April is historically the cheapest month to fly

Direct flights take 3h 15m

Connecting flights are more common

Frontier Airlines offers many direct deals

Deals appear frequently on this route

St. Louis main airports to depart from

Phoenix main airports to arrive at

Airports nearby Phoenix used as alternative

Business & First Class Flight Deals to Phoenix

Best Elite deals to Phoenix

Oct 17

Dec 21

Sep 15

Oct 23

Oct 26

Oct 23

Oct 20

Sep 29

Sep 30

Sep 15

Sep 15

Sep 22

Frequently Asked Questions About Flights to Phoenix

How early should I book St. Louis to Phoenix flights to get the cheapest price?

What is a good price for a flight from St. Louis to Phoenix?

Which months have the cheapest flights from St. Louis to Phoenix?