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$48+ Cheap flights from St. Louis (STL) to Gilbert, AZ

This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 12/1. Fares are subject to change and may not be available on all flights or dates of travel.
STL — PHX
Nov 29 — Dec 61
Sat 11/29
Sat 12/6
1 adult, Economy
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Cheapflights Tip: The best prices from Lambert-St Louis to Gilbert are usually found in November or October, booked 87 days in advance, depart on a Wednesday or Tuesday and return on a Tuesday

Find flight deals from St. Louis to Gilbert

Cheapest flights from St. Louis to Gilbert
Explore the most affordable flight options available from St. Louis to Gilbert. Find the lowest fares from popular airlines and budget airlines, with prices last updated on October 30, 2025.

This Kiwi.com deal was found by Cheapflights users on 10/29. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 11/283:53 pmSTL - PHX
Nonstop3h 33mFrontier
Fri 12/510:26 pmPHX - STL
1 stop10h 48mFrontier
Deal found 10/29$147
This Kiwi.com deal was found by Cheapflights users on 10/29. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 11/283:53 pmSTL - PHX
Nonstop3h 33mFrontier
Wed 12/37:43 pmPHX - STL
1 stop15h 29mFrontier
Deal found 10/29$148
This Frontier deal was found by Cheapflights users on 10/29. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 11/132:42 pmSTL - PHX
1 stop9h 47mFrontier
Mon 11/177:01 amPHX - STL
1 stop12h 11mFrontier
Deal found 10/29$150
This CheapOair deal was found by Cheapflights users on 10/29. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/107:43 pmSTL - PHX
1 stop13h 23mFrontier
Fri 12/127:25 amPHX - STL
Nonstop2h 57mFrontier
Deal found 10/29$152
This Kiwi.com deal was found by Cheapflights users on 10/29. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 12/13:53 pmSTL - PHX
Nonstop3h 33mFrontier
Wed 12/34:32 pmPHX - STL
2 stops17h 35mFrontier
Deal found 10/29$155
This Frontier deal was found by Cheapflights users on 10/28. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 11/167:02 pmSTL - PHX
1 stop6h 11mFrontier
Mon 11/177:25 amPHX - STL
Nonstop2h 59mFrontier
Deal found 10/28$156
This Frontier deal was found by Cheapflights users on 10/28. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 11/1712:09 pmSTL - PHX
Nonstop3h 22mFrontier
Fri 11/2111:14 amPHX - STL
Nonstop2h 54mFrontier
Deal found 10/28$158
This Kiwi.com deal was found by Cheapflights users on 10/29. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 12/57:43 pmSTL - PHX
1 stop13h 23mFrontier
Tue 12/94:32 pmPHX - STL
1 stop16h 42mFrontier
Deal found 10/29$159
This Priceline deal was found by Cheapflights users on 10/29. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Priceline is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 11/1012:09 pmSTL - PHX
Nonstop3h 22mFrontier
Sat 11/158:00 amPHX - STL
1 stop6h 56mFrontier
Deal found 10/29$161
This CheapOair deal was found by Cheapflights users on 10/29. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 11/137:45 pmSTL - PHX
1 stop13h 39mFrontier
Sun 11/169:35 amPHX - STL
1 stop27h 22mFrontier
Deal found 10/29$162

Cheap flight deals from St. Louis to Gilbert

Keep the following information in mind while searching for St. Louis to Gilbert flight deals. Data was last updated October 30, 2025.

Round-trip from

$145
(Kiwi.com)

One-way from

$48
(Kiwi.com)

Popular in

March

Cheapest in

November

Average price

$333
From Lambert-St Louis to Gilbert
Search Deals
One-way flight from Lambert-St Louis to Gilbert
Search Deals
Highest demand for flights based on searches. 9% potential increase in price ($38 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 2% potential price decrease ($9 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in October 2025
Search Deals

Cheapflights Fare Finder

 
Customize your flight search to find flights from St. Louis to Gilbert that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated October 30, 2025.
Use the filters below to find and compare flights from St. Louis to Gilbert that are best for you.

Fly from

St. Louis

Fly to

Gilbert

Route

Depart

Return

Price

St. LouisPhoenix

STL - PHX

STLPHX

Lambert-St Louis

Mon 11/10

5:20 am-7:45 am

Nonstop3h 25m

Phoenix Sky Harbor Intl

Fri 11/14

6:30 am-10:20 am

Nonstop2h 50m

$213

St. LouisPhoenix

STL - PHX

STLPHX

Lambert-St Louis

Tue 11/18

10:25 am-3:05 pm

1 stop5h 40m

Phoenix Sky Harbor Intl

Wed 11/19

6:30 pm-10:20 pm

Nonstop2h 50m

$223

St. LouisPhoenix

STL - PHX

STLPHX

Lambert-St Louis

Sat 12/6

5:50 pm-8:15 pm

Nonstop3h 25m

Phoenix Sky Harbor Intl

Mon 12/8

4:40 pm-8:30 pm

Nonstop2h 50m

$255

St. LouisPhoenix

STL - PHX

STLPHX

Lambert-St Louis

Mon 11/10

5:20 am-7:45 am

Nonstop3h 25m

Phoenix Sky Harbor Intl

Sat 11/15

6:20 pm-10:10 pm

Nonstop2h 50m

$262

St. LouisPhoenix

STL - PHX

STLPHX

Lambert-St Louis

Mon 11/17

5:25 pm-7:50 pm

Nonstop3h 25m

Phoenix Sky Harbor Intl

Wed 11/19

8:25 am-12:20 pm

Nonstop2h 55m

$266

St. LouisPhoenix

STL - PHX

STLPHX

Lambert-St Louis

Sun 11/2

5:20 am-7:45 am

Nonstop3h 25m

Phoenix Sky Harbor Intl

Mon 11/10

6:30 am-10:20 am

Nonstop2h 50m

$322

St. LouisPhoenix

STL - PHX

STLPHX

Lambert-St Louis

Tue 12/2

5:25 pm-7:50 pm

Nonstop3h 25m

Phoenix Sky Harbor Intl

Sun 12/7

5:25 pm-12:05 am

1 stop5h 40m

$323

St. LouisPhoenix

STL - PHX

STLPHX

Lambert-St Louis

Sat 11/29

6:34 am-1:08 pm

1 stop7h 34m

Phoenix Sky Harbor Intl

Tue 12/9

12:12 pm-1:01 am

2 stops11h 49m

$326

St. LouisPhoenix

STL - PHX

STLPHX

Lambert-St Louis

Sun 1/25

9:40 am-3:15 pm

2 stops6h 35m

Phoenix Sky Harbor Intl

Wed 1/28

12:05 pm-5:10 pm

1 stop4h 05m

$331

St. LouisPhoenix

STL - PHX

STLPHX

Lambert-St Louis

Thu 12/4

2:20 pm-11:51 pm

2 stops10h 31m

Phoenix Sky Harbor Intl

Tue 12/9

12:12 pm-1:01 am

2 stops11h 49m

$340

Flights are sorted by cheapest round-trip flights first.

Deals found on 10/30

Showing 1-10 of 23 results
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Best time to book a flight from St. Louis to Gilbert

Have a flexible travel schedule? Discover the best time to fly to Gilbert from St. Louis with our price prediction graph.
Estimated round-trip price
Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.

Cheapflights Insights

Everything you need to know about your flight from St. Louis to Gilbert

How far ahead should I book a flight from St. Louis to Gilbert?

Use this chart to determine the optimal time to book a round-trip flight from St. Louis to Gilbert. Price data was last updated on October 24, 2025.

To ensure you get the cheapest price possible for a flight from St. Louis to Gilbert, you should look to book at least 87 days in advance of your intended travel date. The price of your flight may increase if you delay and leave booking until a week or so before departure.

What is the cheapest month to book a flight from St. Louis to Gilbert?

Currently, October is the cheapest month in which you can book a flight from St. Louis to Gilbert (average of $121). Flying from St. Louis to Gilbert in June is currently the most expensive (average of $235). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

What is the cheapest time of day to fly from STL to G1L?

Find hourly flight availability from St. Louis to Gilbert. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated October 30, 2025.

A simple way to save on the total cost of your ticket is to fly from St. Louis to Gilbert in the evening. If you’re flexible enough to do this you can expect to save up to 44% on your trip compared to booking a flight at noon.

What is the cheapest day to fly from St. Louis to Gilbert?

Use this chart to determine the cheapest time to fly round-trip from St. Louis to Gilbert. Price data was last updated on December 16, 2024.

Travelers seeking maximum savings on their St. Louis to Gilbert flight should consider departing on Friday evenings when fares are most often at their lowest. Sunday at noon flights should be avoided if possible as fares are typically the most expensive at this time.

How much does it cost to fly round-trip from St. Louis to Gilbert?

Reviews of airlines servicing Gilbert

Get insights into the airlines that provide service to Gilbert. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to Gilbert. Reviews last updated October 30, 2025.
Peruse reviews from past customers who have flown with Southwest, Delta, and United Airlines from St. Louis to Gilbert to help guide your decision. You can also see how each airline stacks up in terms of entertainment options, comfort, food, crew/service, and boarding process.
Southwest
8.0
Very good
4,243 reviews

Comfort

8.0

Entertainment

7.5

Food

7.0

Overall

8.0

Crew

8.6

Boarding

8.1

Reviews

1 / 20
2.0
Mediocre

Mike,Aug 2025

OKC - AUS

AC was not adequate, even on a night flight. WiFi subpar even for the airlines
Southwest
8.0
Very good
4,243 reviews
Southwest
8.0
Very good
4,243 reviews

Comfort

8.0

Entertainment

7.5

Food

7.0

Overall

8.0

Crew

8.6

Boarding

8.1

Reviews

1 / 20
2.0
Mediocre

Mike,Aug 2025

OKC - AUS

AC was not adequate, even on a night flight. WiFi subpar even for the airlines
Delta
7.9
Good
7,998 reviews
Southwest
8.0
Very good
4,243 reviews

Comfort

8.0

Entertainment

7.5

Food

7.0

Overall

8.0

Crew

8.6

Boarding

8.1

Reviews

1 / 20
2.0
Mediocre

Mike,Aug 2025

OKC - AUS

AC was not adequate, even on a night flight. WiFi subpar even for the airlines
United Airlines
7.4
Good
8,998 reviews
Southwest
8.0
Very good
4,243 reviews

Comfort

8.0

Entertainment

7.5

Food

7.0

Overall

8.0

Crew

8.6

Boarding

8.1

Reviews

1 / 20
2.0
Mediocre

Mike,Aug 2025

OKC - AUS

AC was not adequate, even on a night flight. WiFi subpar even for the airlines
American Airlines
7.2
Good
11,035 reviews
Southwest
8.0
Very good
4,243 reviews

Comfort

8.0

Entertainment

7.5

Food

7.0

Overall

8.0

Crew

8.6

Boarding

8.1

Reviews

1 / 20
2.0
Mediocre

Mike,Aug 2025

OKC - AUS

AC was not adequate, even on a night flight. WiFi subpar even for the airlines
Frontier
5.8
Fair
3,122 reviews
Southwest
8.0
Very good
4,243 reviews

Comfort

8.0

Entertainment

7.5

Food

7.0

Overall

8.0

Crew

8.6

Boarding

8.1

Reviews

1 / 20
2.0
Mediocre

Mike,Aug 2025

OKC - AUS

AC was not adequate, even on a night flight. WiFi subpar even for the airlines

Related info for your journey

Find useful and relevant information for your journey from St. Louis to Gilbert. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • What airport do you fly from for flights from St. Louis to Gilbert?

    For a flight from St. Louis to Gilbert, you will be flying from Lambert-St Louis. Lambert-St Louis (STL) is just 12.7 mi from the center of the city. Lambert-St Louis is the only St. Louis airport and it handles 2 outbound flights to Gilbert per day. 6 airlines have flights to Gilbert from Lambert-St Louis on a regular basis.

  • How long is the flight from St. Louis to Gilbert?

    Southwest can get you from St. Louis to Gilbert in just under 3h 25m. Your travel time will be generally consistent. The distance between St. Louis and Gilbert is about 1258 mi. Most flights are nonstop.

  • What are the most reliable airlines from St. Louis to Gilbert?

    Looking for the most reliable airlines to get you to your destination on time? Our data shows these are most likely to get you from St. Louis to Gilbert on time: SkyWest Airlines (100%), Southwest (76%), Alaska Airlines (72%).

  • What are the cheapest flights from St. Louis to Gilbert?

    On average you can expect to pay $416 for a flight from St. Louis to Gilbert. The cheapest flight overall is $79 while the most popular route, (Lambert-St Louis - Phoenix Sky Harbor Intl) is currently priced at $134.

  • Can I find deals for flights from St. Louis to Gilbert that include hotel bookings?

    Yes. In addition to deals on St. Louis to Gilbert flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from St. Louis to Gilbert?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from St. Louis to Gilbert.

  • Can I find deals for business class flights from St. Louis to Gilbert?

    Yes. Cheapflights offers flight deals from St. Louis to Gilbert by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

  • What is the cheapest month to book a flight from St. Louis to Gilbert?

    Currently, October is the cheapest month in which you can book a flight from St. Louis to Gilbert (average of $121). Flying from St. Louis to Gilbert in June is currently the most expensive (average of $235). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

See more FAQs

Browse thousands of different options on Cheapflights for your next trip

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Top 6 airlines flying from St. Louis to Gilbert

Discover the top 6 airlines that operate flights from St. Louis to Gilbert. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated October 30, 2025.
AirlineCheapestAverageFlexibilityOn-time
FrontierCheapest$99Average$207FlexibilityNo cancel feeOn-time62%
Spirit AirlinesCheapest$158Average$200FlexibilityNo cancel feeOn-time65%
DeltaCheapest$236Average$372FlexibilityNo cancel feeOn-timeN/A
American AirlinesCheapest$243Average$377FlexibilityNo cancel feeOn-time71%
SouthwestCheapest$251Average$408FlexibilityNo cancel feeOn-time63%
United AirlinesCheapest$289Average$394FlexibilityNo cancel feeOn-time69%

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