What is the cheapest airline that flies from Arizona to Lambert-St Louis?

Frontier, Southwest, and Spirit Airlines are the most popular carriers operating from Arizona to Lambert-St Louis

What airlines fly to St. Louis?

American Airlines, Southwest and Frontier are the top three most popular airlines that fly to St. Louis from Arizona according to our data. American Airlines is the first choice among our users, with 44% of people opting to fly with this airline when traveling to St. Louis. Keep in mind that there are 5 different airlines that fly to St. Louis on a routine basis, so you have a few additional options to choose from.

How long does it take to fly to St. Louis?

Flight times from Arizona to St. Louis vary, but if you’re flying out of Phoenix and flying into St. Louis (one of the most popular routes), then the duration is 2h 50m on average. Another popular route from Arizona to St. Louis is flying from Tucson to St. Louis, which will take roughly 5h 25m. Keep in mind that layovers or delays could extend your travel time.

How many flights depart from Arizona to St. Louis on average per day?

The number of flights available between Arizona and St. Louis is 11 per day as of August 2025. The most frequent departure time is 7:00PM, with 40% of daily flights leaving in the evening.

How many flights depart from Arizona to St. Louis on average per week?

78 flights are operational weekly from Arizona to St. Louis as of August 2025. The most popular departure day for this route is Mon, with 26% of flights per week taking off on this day.

When did momondo last update prices for flights from Arizona to Lambert-St Louis Airport?

Prices for flights from Arizona to Lambert-St Louis Airport are refreshed on a daily basis.

How many operators does momondo search for flights from Arizona to Lambert-St Louis Airport?

There are 6 operators available for flights from Arizona to Lambert-St Louis Airport as of August 2025.

How old do you have to be to fly from Arizona to Lambert-St Louis Airport?

The minimum age for a child to fly alone is five, but airlines that offer an unaccompanied minor (UNMR) service may have their own age limitations. Flight duration, scheduling, and layovers are among the considerations that may influence age limits. We recommend that you double-check with the airline you are booking with for travel from Arizona to Lambert-St Louis Airport.

What documentation or ID do you need to fly to Lambert-St Louis Airport?

The required travel and health documents for your Lambert-St Louis Airport trip may vary depending on your itinerary and personal circumstances. As a general rule, you should carry multiple documents, including a national ID card or driver's license and a passport valid for six months after your intended arrival at Lambert-St Louis Airport. We recommend that you seek guidance from your airline or a reliable third party such as IATA.

$61 Cheap Flights from Arizona to St. Louis in 2025

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Find the cheapest flights from Arizona to St. Louis

Round-trip

One-way

Last minute

Direct

Cheap round-trip flights

3:15 pm - 8:40 pmLAS-STL

3h 25mnonstop

2:38 pm - 4:16 pmSTL-LAS

3h 38mnonstop

$61Frontier

Find Deal

Fri, Oct 3 - Mon, Oct 6

8:34 am - 1:53 pmLAS-STL

3h 19mnonstop

9:29 pm - 11:05 pmSTL-LAS

3h 36mnonstop

$94Frontier

Find Deal

Fri, Sep 5 - Mon, Sep 8

6:50 pm - 11:57 pmPHX-STL

3h 07mnonstop

7:31 am - 9:05 amSTL-PHX

3h 34mnonstop

$231American Airlines

Find Deal

Thu, Oct 16 - Mon, Oct 20

12:18 am - 9:09 amPHX-STL

6h 51m1 stop

7:00 am - 8:34 amSTL-PHX

3h 34mnonstop

$239American Airlines

Find Deal

Fri, Oct 24 - Tue, Oct 28

12:40 am - 8:51 amPHX-STL

6h 11m1 stop

6:50 am - 12:15 pmSTL-PHX

7h 25m1 stop

$244Delta

Find Deal

Wed, Oct 22 - Sat, Oct 25

6:00 pm - 12:37 amTUS-STL

5h 37m1 stop

6:00 am - 12:24 pmSTL-TUS

7h 24m1 stop

$257Delta

Find Deal

Wed, Jan 28 - Wed, Feb 4

6:00 am - 3:04 pmPHX-STL

7h 04m1 stop

4:00 pm - 12:23 pmSTL-PHX

22h 23m2 stops

$263

Find Deal

Sun, Sep 21 - Sun, Sep 28

9:30 am - 9:40 amPHX-STL

22h 10m2 stops

7:55 pm - 7:32 amSTL-PHX

13h 37m1 stop

$281

Find Deal

Sat, Sep 20 - Sat, Sep 27

6:55 pm - 11:50 pmPHX-STL

2h 55mnonstop

9:40 am - 12:05 pmSTL-PHX

3h 25mnonstop

$284Southwest

Find Deal

Thu, Oct 30 - Sun, Nov 2

6:10 am - 2:20 pmTUS-STL

7h 10m1 stop

10:55 pm - 9:50 amSTL-TUS

11h 55m1 stop

$422Southwest

Find Deal

Wed, Nov 26 - Sun, Nov 30

Frontier flights from Arizona to St. Louis

Our best Frontier deals on Arizona to St. Louis flight tickets

Frontier

Oct 3

LAS3:15 pmLas Vegas Harry Reid Intl

3h 25m

STL8:40 pmLambert-St Louis

Oct 6

STL2:38 pmLambert-St Louis

3h 38m

LAS4:16 pmLas Vegas Harry Reid Intl

$61

Find similar

Frontier

Sep 5

LAS8:34 amLas Vegas Harry Reid Intl

3h 19m

STL1:53 pmLambert-St Louis

Sep 8

STL9:29 pmLambert-St Louis

3h 36m

LAS11:05 pmLas Vegas Harry Reid Intl

$94

Find similar

Frontier

Sep 5

LAS3:15 pmLas Vegas Harry Reid Intl

3h 25m

STL8:40 pmLambert-St Louis

Sep 13

STL4:58 pmLambert-St Louis

3h 37m

LAS6:35 pmLas Vegas Harry Reid Intl

$95

Find similar

United Airlines flights from Arizona to St. Louis

Our best United Airlines deals on Arizona to St. Louis flight tickets

United Airlines

Aug 27

PHX6:00 amPhoenix Sky Harbor Intl

8h 33m

2 stops

STL4:33 pmLambert-St Louis

Aug 30

STL4:40 pmLambert-St Louis

5h 37m

1 stop

PHX8:17 pmPhoenix Sky Harbor Intl

$343

Find similar

United Airlines

Sep 3

TUS6:00 amTucson

10h 23m

2 stops

STL6:23 pmLambert-St Louis

Sep 13

STL6:35 amLambert-St Louis

7h 53m

2 stops

TUS12:28 pmTucson

$387

Find similar

United Airlines

Sep 22

TUS6:00 amTucson

10h 58m

2 stops

STL6:58 pmLambert-St Louis

Sep 29

STL1:40 pmLambert-St Louis

5h 28m

1 stop

TUS5:08 pmTucson

$403

Find similar

Fly from

Fly to

Route

Depart

Return

Price

Las VegasSt. Louis

LAS - STL

LASSTL

Las Vegas Harry Reid Intl

Fri 10/3

3:15 pm-8:40 pm

Nonstop3h 25m

Lambert-St Louis

Mon 10/6

2:38 pm-4:16 pm

Nonstop3h 38m

$61

Las VegasSt. Louis

LAS - STL

LASSTL

Las Vegas Harry Reid Intl

Fri 9/5

8:34 am-1:53 pm

Nonstop3h 19m

Lambert-St Louis

Mon 9/8

9:29 pm-11:05 pm

Nonstop3h 36m

$94

PhoenixSt. Louis

PHX - STL

PHXSTL

Phoenix Sky Harbor Intl

Thu 10/16

6:50 pm-11:57 pm

Nonstop3h 07m

Lambert-St Louis

Mon 10/20

7:31 am-9:05 am

Nonstop3h 34m

$231

PhoenixSt. Louis

PHX - STL

PHXSTL

Phoenix Sky Harbor Intl

Fri 10/24

12:18 am-9:09 am

1 stop6h 51m

Lambert-St Louis

Tue 10/28

7:00 am-8:34 am

Nonstop3h 34m

$239

PhoenixSt. Louis

PHX - STL

PHXSTL

Phoenix Sky Harbor Intl

Wed 10/22

12:40 am-8:51 am

1 stop6h 11m

Lambert-St Louis

Sat 10/25

6:50 am-12:15 pm

1 stop7h 25m

$244

TucsonSt. Louis

TUS - STL

TUSSTL

Tucson

Wed 1/28

6:00 pm-12:37 am

1 stop5h 37m

Lambert-St Louis

Wed 2/4

6:00 am-12:24 pm

1 stop7h 24m

$257

PhoenixSt. Louis

PHX - STL

PHXSTL

Phoenix Sky Harbor Intl

Sun 9/21

6:00 am-3:04 pm

1 stop7h 04m

Lambert-St Louis

Sun 9/28

4:00 pm-12:23 pm

2 stops22h 23m

$263

PhoenixSt. Louis

PHX - STL

PHXSTL

Phoenix Sky Harbor Intl

Sat 9/20

9:30 am-9:40 am

2 stops22h 10m

Lambert-St Louis

Sat 9/27

7:55 pm-7:32 am

1 stop13h 37m

$281

PhoenixSt. Louis

PHX - STL

PHXSTL

Phoenix Sky Harbor Intl

Thu 10/30

6:55 pm-11:50 pm

Nonstop2h 55m

Lambert-St Louis

Sun 11/2

9:40 am-12:05 pm

Nonstop3h 25m

$284

TucsonSt. Louis

TUS - STL

TUSSTL

Tucson

Wed 11/26

6:10 am-2:20 pm

1 stop7h 10m

Lambert-St Louis

Sun 11/30

10:55 pm-9:50 am

1 stop11h 55m

$422

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How to get the cheapest flight ticket from Arizona to St. Louis

Look no further. We've gone through all the searches for this route on momondo so you have the important information and insights to find the cheapest flight ticket for your trip

Prices

Airlines

Other information

What is the cheapest month to fly to St. Louis?

In general, September is the cheapest month to fly from Arizona to St. Louis. Due to it being the ‘off-season’ during this time, you can expect flight prices to be around $298. The month of August is another great option to travel to St. Louis, with average flight prices from Arizona averaging around $342.

What is the cheapest day to depart on your flight to St. Louis?

The cheapest day to depart on your flight to St. Louis is on a Tuesday when prices can be found for as low as $398. This is often the case because there is less demand to fly during this day of the week. If your travel schedule is flexible, try to avoid departing on a Sunday because tickets tend to average around $458. These prices are subject to change though, so be sure to set up a Price Alert for flights to St. Louis.

What is the cheapest time of day to depart on your flight to St. Louis?

Flying to St. Louis from Arizona in the evening is the least expensive time of day to depart. momondo users have found prices as low as $401 when looking at flights departing in the evening. At noon is when there is more demand to fly to St. Louis, so prices are often more expensive at around $450 per ticket.

What is the cheapest Arizona to Lambert-St Louis flight route?

Fly from Phoenix Sky Harbor Intl to Lambert-St Louis for the best Arizona - Lambert-St Louis flight prices

How far in advance should I book a flight to St. Louis?

You are more likely to see cheaper flights to St. Louis from Arizona when booking weeks ahead of your departure date. In general, you can expect to find flights to St. Louis for around $392 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to St. Louis from Arizona for as low as $329 on momondo.

What cabin class options are available on Arizona to Lambert-St Louis flights?

There are 3 cabin classes available to choose from on Arizona to Lambert-St Louis flights. Cabin price and availability will vary by airline so perform a search above to find the right deals for you.

Can stopping save me money on Arizona to St. Louis flights?

You could potentially save up to 16% on your flight if you consider stops on a Arizona to St. Louis flight.

Cheap Arizona to St. Louis flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from Arizona to St. Louis

Best Price Found	$173
Fastest flight time	2h 49m
Direct flights	Every day
Airports in St. Louis	1 airport

The best one-way flight to St. Louis from Arizona in the past 72 hours is $173. The best round-trip flight deal from Arizona to St. Louis found on momondo in the last 72 hours is $286.

The fastest flight from Arizona to St. Louis takes 2h 49m

Direct flights go from Arizona to St. Louis every day.

There is 1 airport near St. Louis: Lambert-St Louis (STL)

Search flight deals

When did momondo last update prices for flights from Arizona to Lambert-St Louis Airport?
Prices for flights from Arizona to Lambert-St Louis Airport are refreshed on a daily basis.
How many operators does momondo search for flights from Arizona to Lambert-St Louis Airport?
There are 6 operators available for flights from Arizona to Lambert-St Louis Airport as of August 2025.
How old do you have to be to fly from Arizona to Lambert-St Louis Airport?
The minimum age for a child to fly alone is five, but airlines that offer an unaccompanied minor (UNMR) service may have their own age limitations. Flight duration, scheduling, and layovers are among the considerations that may influence age limits. We recommend that you double-check with the airline you are booking with for travel from Arizona to Lambert-St Louis Airport.
What documentation or ID do you need to fly to Lambert-St Louis Airport?
The required travel and health documents for your Lambert-St Louis Airport trip may vary depending on your itinerary and personal circumstances. As a general rule, you should carry multiple documents, including a national ID card or driver's license and a passport valid for six months after your intended arrival at Lambert-St Louis Airport. We recommend that you seek guidance from your airline or a reliable third party such as IATA.
What is the most popular plane model from Arizona to St. Louis?
Based on momondo bookings for this flight route, the most popular plane model on flight routes from Arizona to St. Louis is Boeing 737 MAX 8 (21.51% of total bookings). The next most popular plane models are Boeing 737-800 Passenger/BBJ2 (winglets) (20.16%), Boeing 737-700 Passenger/BBJ1 (winglets) (18.36%), and Boeing 737-800 (16.89%).

Best airlines flying from Arizona to St. Louis

Compare and see reviews for airlines that fly from Arizona to St. Louis with momondo

Airline	Rating	Free Cancellation	Price
Frontier	PriceFrom $116	Free Cancellation	Rating 5.8 3,201 reviews	Search Frontier flights
Delta	PriceFrom $223	Free Cancellation	Rating 7.9 7,981 reviews	Search Delta flights
American Airlines	PriceFrom $254	Free Cancellation	Rating 7.2 10,000 reviews	Search American Airlines flights
United Airlines	PriceFrom $266	Free Cancellation	Rating 7.4 8,940 reviews	Search United Airlines flights
Southwest	PriceFrom $287	Free Cancellation	Rating 8.0 4,243 reviews	Search Southwest flights

St. Charles

Chesterfield

Fairview Heights

Hermann

Maryland Heights

Florissant

O'Fallon

Fenton

Collinsville

Wentzville

Alton

St. Peters

Festus

Farmington

Glencoe

Clayton

Edwardsville

Eureka

Litchfield

Shrewsbury

Why use momondo?

Why should I use momondo to find a flight deal from Arizona to St. Louis?

Finding the right flight to St. Louis from Arizona is quick and easy when you have a range of options in front of you, from reputable agents and recognisable airlines. Options that can then be filtered down to find the best fit. That is what momondo does. We make finding flights to St. Louis quick and easy, saving you time and money.

Can I find flights from Arizona to St. Louis with flexible booking policies on momondo?

momondo does allow users to show only those flights to St. Louis from Arizona which offer a flexible booking policy as well as other useful filters and features.

How can momondo help me find flights from Arizona to St. Louis?

Once you have performed a search for Arizona to St. Louis flights, momondo helps you find the right one by offering useful filters to narrow down your flight selection. Flights can be filtered by multiple factors such as airline, airport and price; but also by other criteria like aircraft type and payment method.

I’m not ready to book a flight from Arizona to St. Louis right now. Can momondo alert me if prices change?

If you are not ready to book a flight from Arizona to St. Louis now, use our insights above to find helpful tips or alternatively set up a price alert, where momondo will track prices on flights to St. Louis and let you know when they change.

An easier way to manage your St. Louis trip

We make it super easy to schedule, organize and travel with friends or family. Trips is free — and available to use no matter where you book.

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Cheap flights from Arizona to St. Louis from $61

This is the cheapest round-trip flight price found by a momondo user in the last 72 hours by searching for a flight from Arizona to St. Louis departing on 10/3. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.

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Big names and deals

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Filter for what you want

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Frontier flights from Arizona to St. Louis

Our best Frontier deals on Arizona to St. Louis flight tickets

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Our best United Airlines deals on Arizona to St. Louis flight tickets

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How to get the cheapest flight ticket from Arizona to St. Louis

Look no further. We've gone through all the searches for this route on momondo so you have the important information and insights to find the cheapest flight ticket for your trip

What is the cheapest month to fly to St. Louis?

What is the cheapest day to depart on your flight to St. Louis?

What is the cheapest time of day to depart on your flight to St. Louis?

What is the cheapest Arizona to Lambert-St Louis flight route?

Fly from Phoenix Sky Harbor Intl to Lambert-St Louis for the best Arizona - Lambert-St Louis flight prices

How far in advance should I book a flight to St. Louis?

What cabin class options are available on Arizona to Lambert-St Louis flights?

There are 3 cabin classes available to choose from on Arizona to Lambert-St Louis flights. Cabin price and availability will vary by airline so perform a search above to find the right deals for you.

Can stopping save me money on Arizona to St. Louis flights?

You could potentially save up to 16% on your flight if you consider stops on a Arizona to St. Louis flight.

What is the cheapest airline that flies from Arizona to Lambert-St Louis?

Frontier, Southwest, and Spirit Airlines are the most popular carriers operating from Arizona to Lambert-St Louis

What airlines fly to St. Louis?

How many flights depart from Arizona to St. Louis on average per day?

The number of flights available between Arizona and St. Louis is 11 per day as of August 2025. The most frequent departure time is 7:00PM, with 40% of daily flights leaving in the evening.

How many flights depart from Arizona to St. Louis on average per week?

78 flights are operational weekly from Arizona to St. Louis as of August 2025. The most popular departure day for this route is Mon, with 26% of flights per week taking off on this day.

How long does it take to fly to St. Louis?

Cheap Arizona to St. Louis flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from Arizona to St. Louis

Best Price Found

Fastest flight time

Direct flights

Airports in St. Louis

When did momondo last update prices for flights from Arizona to Lambert-St Louis Airport?

How many operators does momondo search for flights from Arizona to Lambert-St Louis Airport?

How old do you have to be to fly from Arizona to Lambert-St Louis Airport?

What documentation or ID do you need to fly to Lambert-St Louis Airport?

What is the most popular plane model from Arizona to St. Louis?

Best airlines flying from Arizona to St. Louis

Compare and see reviews for airlines that fly from Arizona to St. Louis with momondo

Traveling to a place near St. Louis?

Why use momondo?

Why should I use momondo to find a flight deal from Arizona to St. Louis?

Can I find flights from Arizona to St. Louis with flexible booking policies on momondo?

How can momondo help me find flights from Arizona to St. Louis?

I’m not ready to book a flight from Arizona to St. Louis right now. Can momondo alert me if prices change?

An easier way to manage your St. Louis trip

We make it super easy to schedule, organize and travel with friends or family. Trips is free — and available to use no matter where you book.

Get notified when prices go down

Daily price changes in your inbox - only with Price Alerts.

Find better results for your trip to the United States

Airports servicing Missouri