$58+ Cheap flights from St. Louis (STL) to Mesa, 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 2/20. Fares are subject to change and may not be available on all flights or dates of travel.
STL — PHX
Mar 11 — Mar 181
1 adult, Economy
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Find cheap flights from St. Louis to Mesa with Cheapflights
1. Tell us where you want to go
Enter your travel information like dates, passengers, trip type (one-way or round trip), and preferred cabin class then click “Find deals”2. Select your favorite providers
We find the providers serving your travel needs. Choose up to four travel providers to compare side-by-side for flights, hotels, or car rentals.3. Compare prices and book
Review each provider’s pricing and select the best option for you! Book through your favorite provider’s website for a seamless experience.Cheapflights Tip: The best prices from Lambert-St Louis to Mesa are usually found in November or October, booked 24 days in advance, depart on a Wednesday or Friday and return on a Friday
Cheap flight deals from St. Louis to Mesa
Cheapest
Best
Last-minute
One-way
Cheapest flights from St. Louis to MesaExplore the most affordable flight options available from St. Louis to Mesa. Find the lowest fares from popular airlines and budget airlines, with prices last updated on February 9, 2026.
Explore the most affordable flight options available from St. Louis to Mesa. Find the lowest fares from popular airlines and budget airlines, with prices last updated on February 9, 2026.
This Super.com deal was found by Cheapflights users on 2/6. 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 Super.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 2/139:02 pm
STL
- PHX
Nonstop3h 41m
Frontier
Fri 2/276:00 am
PHX
- STL
1 stop6h 09m
Frontier
Deal found 2/6![Frontier logo]()
$151
This Kiwi.com deal was found by Cheapflights users on 2/6. 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.
Sat 2/282:51 pm
STL
- PHX
1 stop7h 50m
Frontier
Wed 3/46:00 am
PHX
- STL
1 stop8h 53m
Frontier
Deal found 2/6![Frontier logo]()
$152
This Expedia deal was found by Cheapflights users on 2/8. 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 Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 2/209:02 pm
STL
- PHX
Nonstop3h 41m
Frontier
Fri 2/276:00 am
PHX
- STL
1 stop6h 09m
Frontier
Deal found 2/8![Frontier logo]()
$154
This Super.com deal was found by Cheapflights users on 2/8. 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 Super.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 3/810:47 pm
STL
- PHX
Nonstop3h 41m
Frontier
Thu 3/125:09 pm
PHX
- STL
Nonstop2h 53m
Frontier
Deal found 2/8![Frontier logo]()
$156
This Super.com deal was found by Cheapflights users on 2/6. 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 Super.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 2/279:02 pm
STL
- PHX
Nonstop3h 41m
Frontier
Mon 3/23:59 pm
PHX
- STL
Nonstop2h 53m
Frontier
Deal found 2/6![Frontier logo]()
$157
This Kiwi.com deal was found by Cheapflights users on 2/5. 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 3/28:47 pm
STL
- PHX
Nonstop3h 41m
Frontier
Mon 3/99:24 pm
PHX
- STL
2 stops35h 13m
Frontier
Deal found 2/5![Frontier logo]()
$161
This Trip.com deal was found by Cheapflights users on 2/8. 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 Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 2/254:51 pm
STL
- PHX
1 stop8h 08m
Frontier
Sat 2/286:00 am
PHX
- STL
1 stop6h 56m
Frontier
Deal found 2/8![Frontier logo]()
$163
This CheapOair deal was found by Cheapflights users on 2/8. 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.
Fri 2/209:02 pm
STL
- PHX
Nonstop3h 41m
Frontier
Tue 2/2412:17 pm
PHX
- STL
1 stop26h 36m
Frontier
Deal found 2/8![Frontier logo]()
$165
This Kiwi.com deal was found by Cheapflights users on 2/7. 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 3/28:47 pm
STL
- PHX
Nonstop3h 41m
Frontier
Mon 3/168:04 pm
PHX
- STL
2 stops35h 45m
Frontier
Deal found 2/7![Frontier logo]()
$166
Best flights from St. Louis to MesaDiscover carefully curated flight deals from St. Louis to Mesa that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated February 9, 2026.
Discover carefully curated flight deals from St. Louis to Mesa that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated February 9, 2026.
This Kiwi.com deal was found by Cheapflights users on 2/8. 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 2/209:02 pm
STL
- PHX
Nonstop3h 41m
Frontier
Fri 2/277:56 pm
PHX
- STL
2 stops17h 00m
Frontier
Deal found 2/8![Frontier logo]()
$159
This Southwest deal was found by Cheapflights users on 2/7. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 5/24:45 pm
STL
- PHX
Nonstop3h 20m
Southwest
Wed 5/65:35 am
PHX
- STL
Nonstop2h 50m
Southwest
Deal found 2/7![Southwest logo]()
$287
This Kiwi.com deal was found by Cheapflights users on 2/8. 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 3/68:12 pm
STL
- PHX
1 stop13h 30m
Frontier
Sun 3/85:09 pm
PHX
- STL
Nonstop2h 53m
Frontier
Deal found 2/8![Frontier logo]()
$174
This Kiwi.com deal was found by Cheapflights users on 2/8. 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.
Thu 3/2610:47 pm
STL
- PHX
Nonstop3h 41m
Frontier
Sun 3/295:11 pm
PHX
- STL
Nonstop2h 53m
Frontier
Deal found 2/8![Frontier logo]()
$244
This Southwest deal was found by Cheapflights users on 2/8. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 2/289:45 am
STL
- PHX
1 stop4h 40m
Southwest
Sat 3/710:05 pm
PHX
- STL
Nonstop2h 50m
Southwest
Deal found 2/8![Southwest logo]()
$294
This Kiwi.com deal was found by Cheapflights users on 2/8. 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.
Wed 3/258:12 pm
STL
- PHX
1 stop13h 30m
Frontier
Sun 3/296:50 am
PHX
- STL
1 stop24h 59m
Frontier
Deal found 2/8![Frontier logo]()
$263
This Southwest deal was found by Cheapflights users on 2/8. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 4/255:50 pm
STL
- PHX
1 stop5h 20m
Southwest
Wed 4/295:35 am
PHX
- STL
Nonstop2h 50m
Southwest
Deal found 2/8![Southwest logo]()
$295
This Southwest deal was found by Cheapflights users on 2/6. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 3/74:45 pm
STL
- PHX
1 stop7h 15m
Southwest
Sat 3/149:05 pm
PHX
- STL
Nonstop2h 50m
Southwest
Deal found 2/6![Southwest logo]()
$300
This Southwest deal was found by Cheapflights users on 2/7. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 3/252:25 pm
STL
- PHX
Nonstop3h 30m
Southwest
Wed 4/14:45 pm
PHX
- STL
Nonstop2h 50m
Southwest
Deal found 2/7![Southwest logo]()
$315
This Southwest deal was found by Cheapflights users on 2/6. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 4/148:45 pm
STL
- PHX
Nonstop3h 25m
Southwest
Tue 4/2111:10 am
PHX
- STL
1 stop4h 45m
Southwest
Deal found 2/6![Southwest logo]()
$321
Last-minute flights from St. Louis to MesaDiscover last-minute flight deals from St. Louis to Mesa. Data last updated February 9, 2026 and is based on user searches.
Discover last-minute flight deals from St. Louis to Mesa. Data last updated February 9, 2026 and is based on user searches.
This Super.com deal was found by Cheapflights users on 2/6. 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 Super.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 2/139:02 pm
STL
- PHX
Nonstop3h 41m
Frontier
Fri 2/276:00 am
PHX
- STL
1 stop6h 09m
Frontier
Deal found 2/6![Frontier logo]()
$151
This Frontier deal was found by Cheapflights users on 2/6. 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.
Fri 2/209:02 pm
STL
- PHX
Nonstop3h 41m
Frontier
Wed 2/259:52 am
PHX
- STL
1 stop5h 01m
Frontier
Deal found 2/6![Frontier logo]()
$154
This Frontier deal was found by Cheapflights users on 2/8. 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.
Fri 2/209:02 pm
STL
- PHX
Nonstop3h 41m
Frontier
Fri 2/277:36 pm
PHX
- STL
1 stop17h 20m
Frontier
Deal found 2/8![Frontier logo]()
$155
This CheapOair deal was found by Cheapflights users on 2/8. 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.
Fri 2/209:02 pm
STL
- PHX
Nonstop3h 41m
Frontier
Tue 2/2412:17 pm
PHX
- STL
1 stop26h 36m
Frontier
Deal found 2/8![Frontier logo]()
$165
This Trip.com deal was found by Cheapflights users on 2/8. 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 Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 2/254:51 pm
STL
- PHX
1 stop8h 08m
Frontier
Sat 2/286:00 am
PHX
- STL
1 stop6h 56m
Frontier
Deal found 2/8![Frontier logo]()
$163
This Super.com deal was found by Cheapflights users on 2/6. 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 Super.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 2/279:02 pm
STL
- PHX
Nonstop3h 41m
Frontier
Mon 3/23:59 pm
PHX
- STL
Nonstop2h 53m
Frontier
Deal found 2/6![Frontier logo]()
$157
This Kiwi.com deal was found by Cheapflights users on 2/6. 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.
Sat 2/282:51 pm
STL
- PHX
1 stop7h 50m
Frontier
Wed 3/46:00 am
PHX
- STL
1 stop8h 53m
Frontier
Deal found 2/6![Frontier logo]()
$152
This Kiwi.com deal was found by Cheapflights users on 2/5. 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 3/28:47 pm
STL
- PHX
Nonstop3h 41m
Frontier
Mon 3/99:24 pm
PHX
- STL
2 stops35h 13m
Frontier
Deal found 2/5![Frontier logo]()
$161
This Kiwi.com deal was found by Cheapflights users on 2/7. 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 3/28:47 pm
STL
- PHX
Nonstop3h 41m
Frontier
Mon 3/168:04 pm
PHX
- STL
2 stops35h 45m
Frontier
Deal found 2/7![Frontier logo]()
$166
This Super.com deal was found by Cheapflights users on 2/6. 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 Super.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 3/810:47 pm
STL
- PHX
Nonstop3h 41m
Frontier
Thu 3/125:09 pm
PHX
- STL
Nonstop2h 53m
Frontier
Deal found 2/6![Frontier logo]()
$156
One-way flights from St. Louis to MesaSearch for one-way flight options from St. Louis to Mesa. Find affordable one-way fares based on user searches. Data last updated February 9, 2026.
Search for one-way flight options from St. Louis to Mesa. Find affordable one-way fares based on user searches. Data last updated February 9, 2026.
This Kiwi.com deal was found by Cheapflights users on 2/8. 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 2/209:02 pm
STL
- PHX
Nonstop3h 41m
Frontier
Deal found 2/8![Frontier logo]()
$58
This Frontier deal was found by Cheapflights users on 2/8. 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.
Sat 4/41:06 pm
STL
- PHX
Nonstop3h 35m
Frontier
Deal found 2/8![Frontier logo]()
$64
This Frontier deal was found by Cheapflights users on 2/7. 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 3/810:47 pm
STL
- PHX
Nonstop3h 41m
Frontier
Deal found 2/7![Frontier logo]()
$69
This Super.com deal was found by Cheapflights users on 2/7. 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 Super.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 3/21:54 pm
STL
- PHX
1 stop8h 35m
Frontier
Deal found 2/7![Frontier logo]()
$73
This Kiwi.com deal was found by Cheapflights users on 2/8. 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 4/68:16 pm
STL
- PHX
1 stop23h 31m
Frontier
Deal found 2/8![Frontier logo]()
$77
This Kiwi.com deal was found by Cheapflights users on 2/6. 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.
Sat 2/282:51 pm
STL
- PHX
1 stop7h 50m
Frontier
Deal found 2/6![Frontier logo]()
$78
This Kiwi.com deal was found by Cheapflights users on 2/8. 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 3/238:12 pm
STL
- PHX
1 stop29h 39m
Frontier
Deal found 2/8![Frontier logo]()
$80
This Trip.com deal was found by Cheapflights users on 2/8. 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 Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 5/78:12 pm
STL
- PHX
1 stop13h 24m
Frontier
Deal found 2/8![Frontier logo]()
$81
This Kiwi.com deal was found by Cheapflights users on 2/8. 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 5/88:12 pm
STL
- PHX
1 stop14h 26m
Frontier
Deal found 2/8![Frontier logo]()
$84
This Kiwi.com deal was found by Cheapflights users on 2/7. 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.
Sat 3/78:12 pm
STL
- PHX
1 stop12h 30m
Frontier
Deal found 2/7![Frontier logo]()
$88
Find flight deals from St. Louis to Mesa
Keep the following information in mind while searching for St. Louis to Mesa flight deals. Data was last updated February 9, 2026.
Round-trip from | $152 (Kiwi.com) |
|---|---|
One-way from | $58 (Kiwi.com) |
Popular in | March |
Cheapest in | November |
Average price | $337 |
Cheapflights Fare Finder
Customize your flight search to find flights from St. Louis to Mesa 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 February 9, 2026.
Use the filters below to find and compare flights from St. Louis to Mesa that are best for you.
Fly from
St. Louis
Fly to
Mesa
Route
Depart
Return
Price
St. LouisPhoenix
STL - PHX
STLPHX
Lambert-St Louis
Fri 2/20
9:02 pm-11:43 pm
Nonstop3h 41m
Phoenix Sky Harbor Intl
Fri 2/27
7:56 pm-1:56 pm
2 stops17h 00m
$159
St. LouisPhoenix
STL - PHX
STLPHX
Lambert-St Louis
Fri 3/6
8:12 pm-8:42 am
1 stop13h 30m
Phoenix Sky Harbor Intl
Sun 3/8
5:09 pm-10:02 pm
Nonstop2h 53m
$174
St. LouisPhoenix
STL - PHX
STLPHX
Lambert-St Louis
Thu 3/26
10:47 pm-12:28 am
Nonstop3h 41m
Phoenix Sky Harbor Intl
Sun 3/29
5:11 pm-10:04 pm
Nonstop2h 53m
$244
St. LouisPhoenix
STL - PHX
STLPHX
Lambert-St Louis
Wed 3/25
8:12 pm-7:42 am
1 stop13h 30m
Phoenix Sky Harbor Intl
Sun 3/29
6:50 am-9:49 am
1 stop24h 59m
$263
St. LouisPhoenix
STL - PHX
STLPHX
Lambert-St Louis
Sat 5/2
4:45 pm-6:05 pm
Nonstop3h 20m
Phoenix Sky Harbor Intl
Wed 5/6
5:35 am-10:25 am
Nonstop2h 50m
$287
St. LouisPhoenix
STL - PHX
STLPHX
Lambert-St Louis
Sat 2/28
9:45 am-1:25 pm
1 stop4h 40m
Phoenix Sky Harbor Intl
Sat 3/7
10:05 pm-1:55 am
Nonstop2h 50m
$294
St. LouisPhoenix
STL - PHX
STLPHX
Lambert-St Louis
Sat 4/25
5:50 pm-9:10 pm
1 stop5h 20m
Phoenix Sky Harbor Intl
Wed 4/29
5:35 am-10:25 am
Nonstop2h 50m
$295
St. LouisPhoenix
STL - PHX
STLPHX
Lambert-St Louis
Sat 3/7
4:45 pm-11:00 pm
1 stop7h 15m
Phoenix Sky Harbor Intl
Sat 3/14
9:05 pm-1:55 am
Nonstop2h 50m
$300
St. LouisPhoenix
STL - PHX
STLPHX
Lambert-St Louis
Wed 3/25
2:25 pm-3:55 pm
Nonstop3h 30m
Phoenix Sky Harbor Intl
Wed 4/1
4:45 pm-9:35 pm
Nonstop2h 50m
$315
St. LouisPhoenix
STL - PHX
STLPHX
Lambert-St Louis
Tue 4/14
8:45 pm-10:10 pm
Nonstop3h 25m
Phoenix Sky Harbor Intl
Tue 4/21
11:10 am-5:55 pm
1 stop4h 45m
$321
Showing 1-10 of 21 results
Best time to book a flight from St. Louis to Mesa
Have a flexible travel schedule? Discover the best time to fly to Mesa from St. Louis with our price prediction graph.
STL-PHX
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 Mesa
STL-MS9
STL-PHX
How far ahead should I book a flight from St. Louis to Mesa?
Use this chart to determine the optimal time to book a round-trip flight from St. Louis to Mesa. Price data was last updated on February 6, 2026.
To ensure you get the cheapest price possible for a flight from St. Louis to Mesa, you should look to book at least 24 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 Mesa?
Currently, February is the cheapest month in which you can book a flight from St. Louis to Mesa (average of $105). Flying from St. Louis to Mesa in June is currently the most expensive (average of $231). 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 MS9?
Find hourly flight availability from St. Louis to Mesa. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated February 9, 2026.
It’s optimal to fly from St. Louis to Mesa in the evening. By choosing this option you can save up to 25% on the cost of your flight, compared to a flight in the morning.
What is the cheapest day to fly from St. Louis to Mesa?
Use this chart to determine the cheapest time to fly round-trip from St. Louis to Mesa. Price data was last updated on February 7, 2026.
Travelers seeking maximum savings on their St. Louis to Mesa flight should consider departing on Friday evenings when fares are most often at their lowest. Sunday evenings flights should be avoided if possible as fares are typically the most expensive at this time.
Reviews of airlines servicing Mesa
Get insights into the airlines that provide service to Mesa. 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 Mesa. Reviews last updated February 9, 2026.
Read through reviews of airlines operating flights from St. Louis to Mesa, such as Southwest, Delta, and United Airlines. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.
Food
7.0
Boarding
8.1
Overall
8.0
Entertainment
7.5
Crew
8.6
Comfort
8.0
Reviews
1 / 20
2.0
MediocreThomas,Dec 2025
SEA - DEN
Food
7.0
Boarding
8.1
Overall
8.0
Entertainment
7.5
Crew
8.6
Comfort
8.0
Reviews
1 / 20
2.0
MediocreThomas,Dec 2025
SEA - DEN
Food
7.0
Boarding
8.1
Overall
8.0
Entertainment
7.5
Crew
8.6
Comfort
8.0
Reviews
1 / 20
2.0
MediocreThomas,Dec 2025
SEA - DEN
Food
7.0
Boarding
8.1
Overall
8.0
Entertainment
7.5
Crew
8.6
Comfort
8.0
Reviews
1 / 20
2.0
MediocreThomas,Dec 2025
SEA - DEN
Food
7.0
Boarding
8.1
Overall
8.0
Entertainment
7.5
Crew
8.6
Comfort
8.0
Reviews
1 / 20
2.0
MediocreThomas,Dec 2025
SEA - DEN
Food
7.0
Boarding
8.1
Overall
8.0
Entertainment
7.5
Crew
8.6
Comfort
8.0
Reviews
1 / 20
2.0
MediocreThomas,Dec 2025
SEA - DEN
Related info for your journey
Find useful and relevant information for your journey from St. Louis to Mesa. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.
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St. Louis and Mesa flights
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Top 6 airlines flying from St. Louis to Mesa
Discover the top 6 airlines that operate flights from St. Louis to Mesa. 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 February 9, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$94 | Average$202 | FlexibilityNo cancel fee | On-time62% | |
| Cheapest$121 | Average$200 | FlexibilityNo cancel fee | On-time65% | |
| Cheapest$141 | Average$357 | FlexibilityNo cancel fee | On-timeN/A | |
| Cheapest$148 | Average$381 | FlexibilityNo cancel fee | On-time69% | |
| Cheapest$209 | Average$382 | FlexibilityNo cancel fee | On-time71% | |
| Cheapest$218 | Average$395 | FlexibilityNo cancel fee | On-time63% |