Find Cheap Flights from Lambert-St Louis to Phoenix Sky Harbor Intl (STL - PHX)

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Good to Know

Low Season:
January
Best time to beat the crowds
3%
expected price decrease
High Season:
August
Most popular time to fly
19%
expected price increase
Average Price:
$337
(avg. price over the last 2 weeks)
Good Deal:
$276
or less (round trip)

When to Book Flights from Lambert-St Louis to Phoenix Sky Harbor Intl

Average price per month
Flight prices as travel date approaches
-1 day
-2 days

Top tips for Finding a Cheap Flight

Looking for a cheap flight? 25% of our users found flights on this route for $275 or less.
The cheapest flight from Lambert-St Louis to Phoenix Sky Harbor Intl was found 25 days before departure, on average.
Book at least 1 week before departure in order to get a below-average price.
High season is considered to be July, August and September. The cheapest month to fly is January.
Morning departure is around 14% more expensive than an evening flight, on average*.
*Average of the lowest prices shown in KAYAK’s search results for departures within the next 30 days

FAQs for Booking Lambert-St Louis to Phoenix Sky Harbor Intl Flights

How long does a flight from Lambert-St Louis to Phoenix Sky Harbor Intl take?
An average nonstop flight takes 3h 23m, covering a distance of 1259 miles.
How many flights are there between Lambert-St Louis and Phoenix Sky Harbor Intl?
There are 107 (nonstop) flights between Lambert-St Louis and Phoenix Sky Harbor Intl per week, averaging 15 per day.
Which airlines provide the cheapest flights from Lambert-St Louis to Phoenix Sky Harbor Intl?
In the past 3 days, the cheapest round-trip tickets were found on Frontier ($178), American Airlines ($217) and United ($234).
Do I need a passport to fly between Lambert-St Louis and Phoenix Sky Harbor Intl?
No.
Which airlines fly most frequently between Lambert-St Louis and Phoenix Sky Harbor Intl?
Southwest (8 times daily), American Airlines (6 times daily) are the most frequent flyers on this route.
What’s the cheapest day of the week to fly Lambert-St Louis to Phoenix Sky Harbor Intl?
For Lambert-St Louis to Phoenix Sky Harbor Intl, Tuesday is the cheapest day to fly on average and Wednesday is the most expensive. Flying from Phoenix Sky Harbor Intl back to Lambert-St Louis, the best deals are generally found on Saturday, with Thursday being the most expensive.

Book cheap flights from Lambert-St Louis to Phoenix Sky Harbor Intl (round-trip)

Airports
Origin
St. Louis
$178
only
$178
Destination
Phoenix
$178
only
$178
Tue, Feb 27
STL
PHX
6h 35m
Wed, Mar 7
PHX
STL
5h 46m
Trip: 9 days
7.4GoodShow reviews
Overall 7.4 Good
Based on 4 reviews
Overall
5.9
Boarding
6.4
Comfort
5.4
Crew
6.8
Entertainment
4.5
Food
4.7
STL
PHX
Excellent 8.0

The flight was on time. The crew was friendly. They kept you informed throughout the whole flight.

The fact that the carry on item cost me $35. There was no entertainment provided. No complimentary food or drink.

STL
PHX
Excellent 8.0

Good flight

Seats not reclining

TPA
LAS
Okay 4.3

Very reasonable price.

You literally have to pay for even the basic things, including for seats to recline. Cushion on seats thin and seats don't recline. 5hrs flight and No entertainment, no tv, no radio, no complimentary food...they offered a cup of water.

MKE
TPA
Mediocre 2.0

the flights and attendents were good ,flight was delayed almost 2 hours on my return flight

didnt have to pay for luggage on first flight put under seat on return flight the girl at ticket counter was rude to me and charged me 45.00 for my bag i put under my seat and she was not a pleasant person to deal with, i wouldnt fly frontier again

BUF
MCO
Good 7.3

Flight was great. Checkin etc was great

Wed, Feb 28
STL
PHX
3h 55m
Tue, Mar 6
PHX
STL
2h 56m
Trip: 7 days
7.9GoodShow reviews
Overall 7.9 Good
Based on 11 reviews
Overall
7.4
Boarding
7.5
Comfort
7.1
Crew
7.8
Entertainment
6.7
Food
6.7
SJU
MIA
Excellent 9.3

New onboard entertainment

STL
PHX
Good 6.0

Crew was fine even when we had to sit on the ground for 1 1/2 hours for a repair.

American Airlines didn't honor my choice of seats.

STL
PHX
Good 7.3

You provide me with the best ticket prices and to me that was the the most important part of of the trip thx

The airlines charging for your luggage

LHR
ORD
Mediocre 2.0

Nothing really. I will never book from Kayak ever

Everything

STL
PHX
Excellent 8.0

One I love free sodies and two I love free sodies with a smile. I definitely got both with this flight crew.

Not enough sodies and I couldn't smell my own farts.

Sat, Mar 31
STL
PHX
5h 28m
Wed, Apr 4
PHX
STL
6h 21m
Trip: 5 days
7.0GoodShow reviews
Overall 7.0 Good
Based on 54591 reviews
Overall
7.2
Boarding
7.4
Comfort
7.0
Crew
7.7
Entertainment
6.5
Food
6.4
DEN
IAH
Mediocre 2.0

Nothing

Never made it. Stuck in Denver.

IAH
CUN
Mediocre 2.0

poor service, rude flight attendants, no leg room, dirty plane...

poor service, rude flight attendants, no leg room, dirty plane...

DFW
ORD
Excellent 10.0

I LIKE THE SERVICE ON BORD OF THE PLANE

NOTHING

LAX
LHR
Excellent 10.0

United Airlines team and the plaine were brilliant.

SJO
IAH
Mediocre 3.3

The check-in staff were very friendly and helpful.

I already knew I was going to pay $200 to ship my boards back home (I wonder if golf clubs which are roughly the same size cost as much,) but when pre-purchasing through the app for an "oversized" bag you have to put a "one" in the checked bag and a "one" in the oversized bag even though they're the same bag, but then they charge you for two, and when you tell the check-in person that you only have one bag of course they can't issue a refund. No, they tell you that you get to call customer service when you return home.

Wed, Mar 7
STL
PHX
7h 28m
Fri, Mar 16
PHX
STL
5h 46m
Trip: 9 days
Overall 0.0 Poor
Based on 0 reviews
Sun, Apr 8
STL
PHX
14h 10m
Wed, Apr 18
PHX
STL
17h 39m
Trip: 11 days
7.4GoodShow reviews
Overall 7.4 Good
Based on 4 reviews
Overall
5.9
Boarding
6.4
Comfort
5.4
Crew
6.8
Entertainment
4.5
Food
4.7
STL
PHX
Excellent 8.0

The flight was on time. The crew was friendly. They kept you informed throughout the whole flight.

The fact that the carry on item cost me $35. There was no entertainment provided. No complimentary food or drink.

STL
PHX
Mediocre 3.6

I cannot be that mad because the plane got us there in one piece.

Don't be fooled by the sticker price...Frontier was once a great airline but now they nickel and dime you for everything. The only way I will take Frontier again is if I am traveling with only a backpack and have no desire to eat or drink anything on the plane. I ended up paying over $100 on the day of because of bags and seat choices.

MKE
TPA
Mediocre 2.0

the flights and attendents were good ,flight was delayed almost 2 hours on my return flight

didnt have to pay for luggage on first flight put under seat on return flight the girl at ticket counter was rude to me and charged me 45.00 for my bag i put under my seat and she was not a pleasant person to deal with, i wouldnt fly frontier again

STL
PHX
Excellent 8.0

Good flight

Seats not reclining

DEN
ORD
Excellent 9.6

They left me alone.

Fold down tables are tiny

Mon, Apr 9
STL
PHX
11h 19m
Tue, Apr 17
PHX
STL
17h 27m
Trip: 9 days
7.4GoodShow reviews
Overall 7.4 Good
Based on 4 reviews
Overall
5.9
Boarding
6.4
Comfort
5.4
Crew
6.8
Entertainment
4.5
Food
4.7
BUF
MCO
Good 7.3

Flight was great. Checkin etc was great

STL
PHX
Excellent 8.0

Good flight

Seats not reclining

PHL
DEN
Mediocre 2.0

This is actually almost a funny question because Frontier is the worst Airlines well actually that's not true spirit is the worst Airlines the seats are uncomfortable it takes about an hour and a half to just put your bags and baggage drop and then when you get on the plane They don't serve you anything they have no entertainment your crowded in can't move people are rude worst hairlines ever

Every single thing

MKE
TPA
Mediocre 2.0

the flights and attendents were good ,flight was delayed almost 2 hours on my return flight

didnt have to pay for luggage on first flight put under seat on return flight the girl at ticket counter was rude to me and charged me 45.00 for my bag i put under my seat and she was not a pleasant person to deal with, i wouldnt fly frontier again

TPA
LAS
Okay 4.3

Very reasonable price.

You literally have to pay for even the basic things, including for seats to recline. Cushion on seats thin and seats don't recline. 5hrs flight and No entertainment, no tv, no radio, no complimentary food...they offered a cup of water.

Tue, Apr 10
STL
PHX
14h 10m
Fri, Apr 20
PHX
STL
17h 39m
Trip: 11 days
7.4GoodShow reviews
Overall 7.4 Good
Based on 4 reviews
Overall
5.9
Boarding
6.4
Comfort
5.4
Crew
6.8
Entertainment
4.5
Food
4.7
STL
PHX
Mediocre 3.6

I cannot be that mad because the plane got us there in one piece.

Don't be fooled by the sticker price...Frontier was once a great airline but now they nickel and dime you for everything. The only way I will take Frontier again is if I am traveling with only a backpack and have no desire to eat or drink anything on the plane. I ended up paying over $100 on the day of because of bags and seat choices.

DCA
DEN
Excellent 8.0

Friendly staff

Didn't like I wasn't offered a cup of water and they nickel and dime you for EVERYTHING!

ORD
RSW
Good 6.0

Crew was super nice

Delayed 3 hours, boarded and was told would be another 30minutes because of mechanical issues.

TPA
LAS
Okay 4.3

Very reasonable price.

You literally have to pay for even the basic things, including for seats to recline. Cushion on seats thin and seats don't recline. 5hrs flight and No entertainment, no tv, no radio, no complimentary food...they offered a cup of water.

BUF
MCO
Good 7.3

Flight was great. Checkin etc was great

Sat, Mar 3
STL
PHX
3h 55m
Wed, Mar 7
PHX
STL
3h 07m
Trip: 5 days
7.9GoodShow reviews
Overall 7.9 Good
Based on 11 reviews
Overall
7.4
Boarding
7.5
Comfort
7.1
Crew
7.8
Entertainment
6.7
Food
6.7
STL
PHX
Good 6.0

Crew was fine even when we had to sit on the ground for 1 1/2 hours for a repair.

American Airlines didn't honor my choice of seats.

CLT
LGA
Excellent 10.0

Ability to upgrade to first class

Security taking forever

SJU
MIA
Excellent 9.3

New onboard entertainment

LAS
DFW
Excellent 8.0

Flight was punctual and service was good.

Gate change

STL
PHX
Good 7.3

You provide me with the best ticket prices and to me that was the the most important part of of the trip thx

The airlines charging for your luggage

Tue, Apr 3
STL
PHX
7h 13m
Tue, Apr 10
PHX
STL
5h 51m
Trip: 8 days
7.0GoodShow reviews
Overall 7.0 Good
Based on 54591 reviews
Overall
7.2
Boarding
7.4
Comfort
7.0
Crew
7.7
Entertainment
6.5
Food
6.4
DEN
PSP
Okay 4.3

Paid for Econoplus seat but was assigned a seat in the row before the emergency exit. Seat uncomfortable didn’t recline had to go through refund process

GRR
IAH
Good 6.0

Pay for food, cold on plane entire time, everyone bundled up in blankets, jackets but staff friendly

DFW
ORD
Excellent 10.0

I LIKE THE SERVICE ON BORD OF THE PLANE

NOTHING

IAH
CUN
Mediocre 2.0

poor service, rude flight attendants, no leg room, dirty plane...

poor service, rude flight attendants, no leg room, dirty plane...

IAD
GVA
Excellent 10.0

Best flight I have ever experienced!

Nothing

Tue, Mar 13
STL
PHX
8h 25m
Fri, Mar 16
PHX
STL
5h 46m
Trip: 4 days
Overall 0.0 Poor
Based on 0 reviews
Wed, Apr 11
STL
PHX
11h 19m
Fri, Apr 20
PHX
STL
17h 39m
Trip: 10 days
7.4GoodShow reviews
Overall 7.4 Good
Based on 4 reviews
Overall
5.9
Boarding
6.4
Comfort
5.4
Crew
6.8
Entertainment
4.5
Food
4.7
STL
PHX
Excellent 8.0

The flight was on time. The crew was friendly. They kept you informed throughout the whole flight.

The fact that the carry on item cost me $35. There was no entertainment provided. No complimentary food or drink.

TPA
LAS
Okay 4.3

Very reasonable price.

You literally have to pay for even the basic things, including for seats to recline. Cushion on seats thin and seats don't recline. 5hrs flight and No entertainment, no tv, no radio, no complimentary food...they offered a cup of water.

DEN
ORD
Excellent 9.6

They left me alone.

Fold down tables are tiny

STL
PHX
Excellent 8.0

Good flight

Seats not reclining

BUF
MCO
Good 7.3

Flight was great. Checkin etc was great

Wed, Mar 7
STL
PHX
3h 26m
Wed, Mar 21
PHX
STL
2h 54m
Trip: 14 days
7.9GoodShow reviews
Overall 7.9 Good
Based on 11 reviews
Overall
7.4
Boarding
7.5
Comfort
7.1
Crew
7.8
Entertainment
6.7
Food
6.7
STL
PHX
Excellent 8.0

One I love free sodies and two I love free sodies with a smile. I definitely got both with this flight crew.

Not enough sodies and I couldn't smell my own farts.

SJU
MIA
Excellent 9.3

New onboard entertainment

LAS
DFW
Excellent 8.0

Flight was punctual and service was good.

Gate change

PHX
GEG
Good 7.3

The crew was friendly and informative. They were very helpful. The

The seats were uncomfortable. They were hard and so narrow I had to sit crooked in the seat to keep from getting banged into by the service carts and every person going by to the bathrooms. I'm not tiny, but I'm not huge either, it was just overcrowded. It was also very hot in the airplane the entire way from Phoenix to Spokane. My husband, who is always cold, was even hot.

STL
PHX
Good 6.0

Crew was fine even when we had to sit on the ground for 1 1/2 hours for a repair.

American Airlines didn't honor my choice of seats.

Sat, Apr 14
STL
PHX
11h 19m
Fri, Apr 20
PHX
STL
17h 39m
Trip: 7 days
7.4GoodShow reviews
Overall 7.4 Good
Based on 4 reviews
Overall
5.9
Boarding
6.4
Comfort
5.4
Crew
6.8
Entertainment
4.5
Food
4.7
STL
PHX
Mediocre 3.6

I cannot be that mad because the plane got us there in one piece.

Don't be fooled by the sticker price...Frontier was once a great airline but now they nickel and dime you for everything. The only way I will take Frontier again is if I am traveling with only a backpack and have no desire to eat or drink anything on the plane. I ended up paying over $100 on the day of because of bags and seat choices.

DCA
DEN
Excellent 8.0

Friendly staff

Didn't like I wasn't offered a cup of water and they nickel and dime you for EVERYTHING!

STL
PHX
Excellent 8.0

The flight was on time. The crew was friendly. They kept you informed throughout the whole flight.

The fact that the carry on item cost me $35. There was no entertainment provided. No complimentary food or drink.

MKE
TPA
Mediocre 2.0

the flights and attendents were good ,flight was delayed almost 2 hours on my return flight

didnt have to pay for luggage on first flight put under seat on return flight the girl at ticket counter was rude to me and charged me 45.00 for my bag i put under my seat and she was not a pleasant person to deal with, i wouldnt fly frontier again

STL
PHX
Excellent 8.0

Good flight

Seats not reclining

Tue, Mar 13
STL
PHX
3h 26m
Wed, Mar 21
PHX
STL
2h 54m
Trip: 9 days
7.9GoodShow reviews
Overall 7.9 Good
Based on 11 reviews
Overall
7.4
Boarding
7.5
Comfort
7.1
Crew
7.8
Entertainment
6.7
Food
6.7
LHR
ORD
Mediocre 2.0

Nothing really. I will never book from Kayak ever

Everything

JAX
DFW
Excellent 8.6

Polite. Clean. Nice business class.

Would like more Western food.

PHX
GEG
Good 7.3

The crew was friendly and informative. They were very helpful. The

The seats were uncomfortable. They were hard and so narrow I had to sit crooked in the seat to keep from getting banged into by the service carts and every person going by to the bathrooms. I'm not tiny, but I'm not huge either, it was just overcrowded. It was also very hot in the airplane the entire way from Phoenix to Spokane. My husband, who is always cold, was even hot.

LAS
DFW
Excellent 8.0

Flight was punctual and service was good.

Gate change

DFW
FLL
Excellent 8.0

No issues at all

N/A

Sun, Apr 8
STL
PHX
14h 10m
Fri, Apr 13
PHX
STL
8h 00m
Trip: 6 days
Overall 0.0 Poor
Based on 0 reviews
Mon, Apr 16
STL
PHX
11h 19m
Fri, Apr 20
PHX
STL
17h 39m
Trip: 5 days
7.4GoodShow reviews
Overall 7.4 Good
Based on 4 reviews
Overall
5.9
Boarding
6.4
Comfort
5.4
Crew
6.8
Entertainment
4.5
Food
4.7
MCO
CLT
Mediocre 3.3

The flight was ok

First of all the check in lady was rude and unprofessional. The company lost y luggage resulting in extra charges When I was looking for assistance mr Prince was extremely rude, rolling the eyes and not providing support, I was lost and seeking for guidance and I had to figure it out by myself

STL
PHX
Excellent 8.0

Good flight

Seats not reclining

PHL
DEN
Mediocre 2.0

This is actually almost a funny question because Frontier is the worst Airlines well actually that's not true spirit is the worst Airlines the seats are uncomfortable it takes about an hour and a half to just put your bags and baggage drop and then when you get on the plane They don't serve you anything they have no entertainment your crowded in can't move people are rude worst hairlines ever

Every single thing

ISP
MIA
Excellent 10.0

Great flight from Islip to MIA. Looked at another review about water on flights and I was told by the crew that water is FREE!

Seats are small but newly redesigned.

BUF
MCO
Good 7.3

Flight was great. Checkin etc was great

Wed, Mar 14
STL
PHX
3h 26m
Wed, Mar 21
PHX
STL
2h 54m
Trip: 8 days
7.9GoodShow reviews
Overall 7.9 Good
Based on 11 reviews
Overall
7.4
Boarding
7.5
Comfort
7.1
Crew
7.8
Entertainment
6.7
Food
6.7
SJU
MIA
Excellent 9.3

New onboard entertainment

STL
PHX
Excellent 8.0

One I love free sodies and two I love free sodies with a smile. I definitely got both with this flight crew.

Not enough sodies and I couldn't smell my own farts.

STL
PHX
Good 7.3

You provide me with the best ticket prices and to me that was the the most important part of of the trip thx

The airlines charging for your luggage

DFW
FLL
Excellent 8.0

No issues at all

N/A

PHX
GEG
Good 7.3

The crew was friendly and informative. They were very helpful. The

The seats were uncomfortable. They were hard and so narrow I had to sit crooked in the seat to keep from getting banged into by the service carts and every person going by to the bathrooms. I'm not tiny, but I'm not huge either, it was just overcrowded. It was also very hot in the airplane the entire way from Phoenix to Spokane. My husband, who is always cold, was even hot.

Wed, Feb 28
STL
PHX
17h 02m
Tue, Mar 6
PHX
STL
8h 21m
Trip: 7 days
Overall 0.0 Poor
Based on 0 reviews
Tue, Apr 17
STL
PHX
14h 10m
Wed, Apr 25
PHX
STL
17h 39m
Trip: 9 days
7.4GoodShow reviews
Overall 7.4 Good
Based on 4 reviews
Overall
5.9
Boarding
6.4
Comfort
5.4
Crew
6.8
Entertainment
4.5
Food
4.7
MKE
TPA
Mediocre 2.0

the flights and attendents were good ,flight was delayed almost 2 hours on my return flight

didnt have to pay for luggage on first flight put under seat on return flight the girl at ticket counter was rude to me and charged me 45.00 for my bag i put under my seat and she was not a pleasant person to deal with, i wouldnt fly frontier again

STL
PHX
Mediocre 3.6

I cannot be that mad because the plane got us there in one piece.

Don't be fooled by the sticker price...Frontier was once a great airline but now they nickel and dime you for everything. The only way I will take Frontier again is if I am traveling with only a backpack and have no desire to eat or drink anything on the plane. I ended up paying over $100 on the day of because of bags and seat choices.

PHL
DEN
Mediocre 2.0

This is actually almost a funny question because Frontier is the worst Airlines well actually that's not true spirit is the worst Airlines the seats are uncomfortable it takes about an hour and a half to just put your bags and baggage drop and then when you get on the plane They don't serve you anything they have no entertainment your crowded in can't move people are rude worst hairlines ever

Every single thing

DCA
DEN
Excellent 8.0

Friendly staff

Didn't like I wasn't offered a cup of water and they nickel and dime you for EVERYTHING!

ORD
RSW
Good 6.0

Crew was super nice

Delayed 3 hours, boarded and was told would be another 30minutes because of mechanical issues.

Tue, Mar 20
STL
PHX
3h 23m
Tue, Mar 27
PHX
STL
2h 54m
Trip: 8 days
7.9GoodShow reviews
Overall 7.9 Good
Based on 11 reviews
Overall
7.4
Boarding
7.5
Comfort
7.1
Crew
7.8
Entertainment
6.7
Food
6.7
STL
PHX
Excellent 8.0

One I love free sodies and two I love free sodies with a smile. I definitely got both with this flight crew.

Not enough sodies and I couldn't smell my own farts.

STL
PHX
Good 6.0

Crew was fine even when we had to sit on the ground for 1 1/2 hours for a repair.

American Airlines didn't honor my choice of seats.

CLT
LGA
Excellent 10.0

Ability to upgrade to first class

Security taking forever

LAS
DFW
Excellent 8.0

Flight was punctual and service was good.

Gate change

DFW
FLL
Excellent 8.0

No issues at all

N/A

Show more results

Lambert-St Louis to Phoenix Sky Harbor Intl Flight Information

Avg. Flight Duration 3h 15m
Flights Arrive in Phoenix Sky Harbor Intl
Flights Depart from Lambert-St Louis
Flight Price $178
Distance 1259 miles
Airlines Frontier, American Airlines, United
*
Prices are per person and are for e–tickets and include all taxes & fees in USD.

We attempt to get accurate prices, however, prices are not guaranteed.

Here's why:

We’re not the seller.
At KAYAK we don’t set the prices, so it’s not possible for us to guarantee what other companies are selling.

We compile tonnes of data for you
Our service lets you quickly and easily compare results from hundreds of travel sites at once. In this sense, KAYAK is a search engine and we can't guarantee prices we find.

Why aren’t prices accurate 100% of the time?
Prices on airline seats, hotel rooms and car rentals can change frequently. Several people may also be trying to buy the same travel option simultaneously. As a result, you may find, on occasion, that certain prices are no longer available.

If you have more questions or if you have a bad price to report to us,
please send us an and someone from our team will get back to you promptly.

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The fares displayed include all taxes and fees for economy class travel and were found by the provider in the last 72 hours. Seats are limited and may not be available on all flights and days. Fares are subject to change and may not be available on all flights or dates of travel. Some carriers charge additional fees for extra checked bags. Please check the carriers' sites.