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Cheap flights from Phoenix to St. Louis from $79

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Phoenix to St. Louis departing on 5/20. 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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Cheap Phoenix to St. Louis flight deals and tips

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

Best Price Found

$79

Fastest flight time

2h 54m

Direct flights

Every day

Airports in St. Louis

1 airport
The best one-way flight to St. Louis from Phoenix in the past 72 hours is $79. The best round-trip flight deal from Phoenix to St. Louis found on momondo in the last 72 hours is $84.
The fastest flight from Phoenix to St. Louis takes 2h 54m
Direct flights go from Phoenix to St. Louis every day.
There is 1 airport near St. Louis: Lambert-St Louis (STL)

How to get the cheapest flight ticket from Phoenix 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 from Phoenix to St. Louis?

February. The cheapest time of year to fly to St. Louis from Phoenix is February. Most expensive is March

What is the cheapest day to depart Phoenix for St. Louis?

Tuesday. The cheapest day of the week is typically Tuesday. The most expensive is typically Sunday

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

In the evening. Phoenix to St. Louis flights are approximately 25% more expensive at noon than in the evening

What is the cheapest airline that flies to St. Louis from Phoenix?

Frontier. American Airlines, Delta, and Frontier are the most popular carriers operating from Phoenix to St. Louis

What is the cheapest Phoenix to St. Louis flight route?

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

How far in advance should you book Phoenix to St. Louis flights?

10 days before. The cheapest time to buy a flight from Phoenix to St. Louis is approximately 10 days to departure

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

9 flights are operational weekly from Phoenix to St. Louis as of March 2024. The most popular departure time for this route is 11:00AM, with 36% of flights per day taking off at noon.

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

As of March 2024, 66 flights take off from Phoenix and land in St. Louis each week. The most common flight departure day for this route is Sunday, with 18% of weekly flights taking off on this day.

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

No. A direct flight is the cheapest option for a flight between Phoenix to St. Louis.

When traveling from Phoenix to St. Louis, the most popular airport to fly into is Lambert-St Louis Airport. The majority of travelers flying into Lambert-St Louis Airport from Phoenix are departing from Phoenix Sky Harbor Intl Airport. When traveling from Phoenix, it is helpful to have an alternative airport to fly into when you land in St. Louis. The nearest airport to Lambert-St Louis Airport is Springfield Capital Airport which is located in Springfield. The least expensive flight option from Phoenix to St. Louis will typically be PHX — STL during the month of March with an average price of $125 RT.

Phoenix Sky Harbor Intl Airport (PHX) to Lambert-St Louis Airport (STL)$125
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Phoenix Sky Harbor Intl Airport (PHX) to Springfield Capital Airport (SPI)$489
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Easily compare round-trip flights from Phoenix to St. Louis

Below you can see the best fares for your round-trip flight route over the next six months. All fares were found on momondo this week. Browse the quickest and cheapest flights from Phoenix to St. Louis by changing tabs
Frontier
Apr 24
PHX3:45 pmPhoenix Sky Harbor Intl
2h 54m
STL8:39 pmLambert-St Louis
May 11
STL12:39 pmLambert-St Louis
3h 28m
PHX2:07 pmPhoenix Sky Harbor Intl
Multiple Airlines
Apr 24
PHX7:50 pmPhoenix Sky Harbor Intl
12h 28m
1 stop
STL10:18 amLambert-St Louis
May 1
STL8:04 pmLambert-St Louis
16h 21m
2 stops
PHX10:25 amPhoenix Sky Harbor Intl
Frontier
May 29
PHX4:32 pmPhoenix Sky Harbor Intl
2h 59m
STL9:31 pmLambert-St Louis
Jun 5
STL9:26 pmLambert-St Louis
3h 18m
PHX10:44 pmPhoenix Sky Harbor Intl
Frontier
Apr 10
PHX3:45 pmPhoenix Sky Harbor Intl
2h 54m
STL8:39 pmLambert-St Louis
Apr 17
STL9:39 pmLambert-St Louis
3h 28m
PHX11:07 pmPhoenix Sky Harbor Intl
American Airlines
May 21
PHX6:56 pmPhoenix Sky Harbor Intl
3h 00m
STL11:56 pmLambert-St Louis
May 29
STL8:00 amLambert-St Louis
3h 24m
PHX9:24 amPhoenix Sky Harbor Intl
United Airlines
Apr 23
PHX12:35 amPhoenix Sky Harbor Intl
7h 39m
1 stop
STL10:14 amLambert-St Louis
May 1
STL11:10 amLambert-St Louis
7h 11m
1 stop
PHX4:21 pmPhoenix Sky Harbor Intl

Find the cheapest one-way flights from Phoenix to St. Louis

If you're looking for one-way flights from Phoenix to St. Louis, view some of our deals below provided by American Airlines, Frontier and Spirit Airlines
Frontier
May 20
PHX3:35 pmPhoenix Sky Harbor Intl
3h 01m
STL8:36 pmLambert-St Louis
Spirit Airlines
May 20
PHX4:40 pmPhoenix Sky Harbor Intl
18h 57m
3 stops
STL1:37 pmLambert-St Louis
Multiple Airlines
Apr 2
PHX11:20 amPhoenix Sky Harbor Intl
21h 03m
1 stop
STL10:23 amLambert-St Louis

Search last-minute flights to St. Louis from Phoenix

Find and compare round-trip flight prices for your last-minute flight from Phoenix to St. Louis
Frontier
Apr 3
PHX8:45 pmPhoenix Sky Harbor Intl
11h 38m
1 stop
STL10:23 amLambert-St Louis
Apr 13
STL12:59 pmLambert-St Louis
3h 28m
PHX2:27 pmPhoenix Sky Harbor Intl
Multiple Airlines
Apr 6
PHX8:14 amPhoenix Sky Harbor Intl
10h 59m
1 stop
STL9:13 pmLambert-St Louis
Apr 10
STL11:33 amLambert-St Louis
12h 47m
1 stop
PHX10:20 pmPhoenix Sky Harbor Intl
Frontier
Apr 3
PHX8:45 pmPhoenix Sky Harbor Intl
11h 38m
1 stop
STL10:23 amLambert-St Louis
Apr 13
STL8:04 pmLambert-St Louis
12h 13m
1 stop
PHX6:17 amPhoenix Sky Harbor Intl
Frontier
Apr 3
PHX8:45 pmPhoenix Sky Harbor Intl
11h 38m
1 stop
STL10:23 amLambert-St Louis
Apr 6
STL7:04 pmLambert-St Louis
6h 21m
1 stop
PHX11:25 pmPhoenix Sky Harbor Intl
United Airlines
Apr 3
PHX12:35 amPhoenix Sky Harbor Intl
7h 39m
1 stop
STL10:14 amLambert-St Louis
Apr 13
STL3:15 pmLambert-St Louis
8h 40m
1 stop
PHX9:55 pmPhoenix Sky Harbor Intl
Frontier
Apr 4
PHX9:35 amPhoenix Sky Harbor Intl
10h 40m
1 stop
STL10:15 pmLambert-St Louis
Apr 13
STL12:59 pmLambert-St Louis
3h 28m
PHX2:27 pmPhoenix Sky Harbor Intl

Best airlines flying from Phoenix to St. Louis

Compare and see reviews for airlines that fly from Phoenix to St. Louis with momondo
Airline
Rating
Free Cancellation
Price
FrontierPriceFrom $108Free CancellationRating
6.3
4,267 reviews
Search Frontier flights
Spirit AirlinesPriceFrom $156Free CancellationRating
6.4
8,841 reviews
Search Spirit Airlines flights
DeltaPriceFrom $282Free CancellationRating
8.0
11,418 reviews
Search Delta flights
American AirlinesPriceFrom $290Free CancellationRating
7.3
15,202 reviews
Search American Airlines flights
United AirlinesPriceFrom $330Free CancellationRating
7.4
11,481 reviews
Search United Airlines flights

Frontier flights from Phoenix to St. Louis

Our best Frontier deals on Phoenix to St. Louis flight tickets
Frontier
Apr 24
PHX3:45 pmPhoenix Sky Harbor Intl
2h 54m
STL8:39 pmLambert-St Louis
May 11
STL12:39 pmLambert-St Louis
3h 28m
PHX2:07 pmPhoenix Sky Harbor Intl
Frontier
May 29
PHX4:32 pmPhoenix Sky Harbor Intl
2h 59m
STL9:31 pmLambert-St Louis
Jun 5
STL9:26 pmLambert-St Louis
3h 18m
PHX10:44 pmPhoenix Sky Harbor Intl
Frontier
Apr 10
PHX3:45 pmPhoenix Sky Harbor Intl
2h 54m
STL8:39 pmLambert-St Louis
Apr 17
STL9:39 pmLambert-St Louis
3h 28m
PHX11:07 pmPhoenix Sky Harbor Intl

United Airlines flights from Phoenix to St. Louis

Our best United Airlines deals on Phoenix to St. Louis flight tickets
United Airlines
Apr 23
PHX12:35 amPhoenix Sky Harbor Intl
7h 39m
1 stop
STL10:14 amLambert-St Louis
May 1
STL11:10 amLambert-St Louis
7h 11m
1 stop
PHX4:21 pmPhoenix Sky Harbor Intl
United Airlines
Apr 30
PHX12:35 amPhoenix Sky Harbor Intl
7h 39m
1 stop
STL10:14 amLambert-St Louis
May 6
STL5:25 pmLambert-St Louis
8h 03m
1 stop
PHX11:28 pmPhoenix Sky Harbor Intl
United Airlines
Apr 9
PHX12:35 amPhoenix Sky Harbor Intl
7h 39m
1 stop
STL10:14 amLambert-St Louis
Apr 17
STL6:00 amLambert-St Louis
7h 26m
1 stop
PHX11:26 amPhoenix Sky Harbor Intl

  • How far is Phoenix to Lambert-St Louis by plane?

    The distance between Phoenix and Lambert-St Louis is about 1269.1 mi. Flights usually cover this in 2h 54m, depending on flying conditions and air traffic around both airports.

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

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

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

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

    Although the minimum age for a child to fly alone is five, airlines that offer an unaccompanied minor (UMNR) service may have their own age limits, which could be impacted by factors such as flight length, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from Phoenix 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.


Alternative routes for Phoenix to St. Louis

Compare alternative flights to and from nearby airports and cities to discover the best prices and most convenient flight times
Phoenix to Kansas City Flights
Fastest flight time2h 30m
Cheapest price$135
Tucson to Kansas City Flights
Fastest flight time5h 05m
Cheapest price$357
Tucson to St. Louis Flights
Fastest flight time5h 39m
Cheapest price$402
Tucson to Springfield Flights
Fastest flight time6h 30m
Cheapest price$283
Tucson to Joplin Flights
Fastest flight time11h 33m
Cheapest price$594
Flagstaff to Springfield Flights
Fastest flight time4h 45m
Cheapest price$659

Similar Phoenix to St. Louis flights

Flexible with your destination? Broaden your search and find flights similar to your Phoenix to St. Louis route

Why use momondo?

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

Finding the right flight to St. Louis from Phoenix 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 Phoenix to St. Louis with flexible booking policies on momondo?

Yes. momondo enables you to select and highlight flights to St. Louis from Phoenix with this policy.

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

momondo offers useful filters to help you find the right flight. Choose specific flight times, airports or even what payment method you prefer. We have numerous options to help you book your ideal flight from Phoenix to St. Louis.

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

Price alerts on flights to St. Louis from Phoenix are quick and easy to set up on momondo. Simply perform a search and select the price alert feature. It is as simple as that.


An easier way to manage your St. Louis trip

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