$103+ Cheap flights from Mesa, AZ to St. Louis (STL)
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 9/10. Fares are subject to change and may not be available on all flights or dates of travel.
PHX — STL
Aug 24 — Aug 311
Round-trip
1 adult, Economy
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Find cheap flights from Mesa to St. Louis 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 Mesa to Lambert-St Louis are usually found in October or January, booked 10 days in advance, depart on a Friday or Saturday and return on a Wednesday
Cheap flight deals from Mesa to St. Louis
Cheapest
Best
Last-minute
One-way
Cheapest flights from Mesa to St. LouisExplore the most affordable flight options available from Mesa to St. Louis. Find the lowest fares from popular airlines and budget airlines, with prices last updated on July 25, 2026.
Explore the most affordable flight options available from Mesa to St. Louis. Find the lowest fares from popular airlines and budget airlines, with prices last updated on July 25, 2026.
This Kiwi.com deal was found by Cheapflights users on 7/23. 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.
Tue 10/138:16 am
PHX
- STL
1 stop8h 59m
Frontier
Wed 10/285:32 pm
STL
- PHX
1 stop25h 18m
Frontier
Deal found 7/23![Frontier logo]()
$177
This Kiwi.com deal was found by Cheapflights users on 7/24. 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 8/248:35 am
PHX
- STL
1 stop8h 38m
Frontier
Mon 8/317:58 pm
STL
- PHX
1 stop5h 41m
Frontier
Deal found 7/24![Frontier logo]()
$206
This Kiwi.com deal was found by Cheapflights users on 7/23. 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 9/36:35 am
PHX
- STL
1 stop10h 38m
Frontier
Thu 9/108:10 pm
STL
- PHX
1 stop17h 32m
Frontier
Deal found 7/23![Frontier logo]()
$208
This Kiwi.com deal was found by Cheapflights users on 7/22. 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 8/206:35 am
PHX
- STL
1 stop10h 38m
Frontier
Mon 8/317:58 pm
STL
- PHX
1 stop5h 41m
Frontier
Deal found 7/22![Frontier logo]()
$210
This Kiwi.com deal was found by Cheapflights users on 7/21. 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 9/119:06 am
PHX
- STL
1 stop8h 09m
Frontier
Mon 9/148:10 pm
STL
- PHX
1 stop13h 48m
Frontier
Deal found 7/21![Frontier logo]()
$211
This Kiwi.com deal was found by Cheapflights users on 7/24. 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 8/136:40 am
PHX
- STL
1 stop10h 43m
Frontier
Sat 8/154:57 pm
STL
- PHX
1 stop7h 19m
Frontier
Deal found 7/24![Frontier logo]()
$215
This Kiwi.com deal was found by Cheapflights users on 7/23. 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 8/206:35 am
PHX
- STL
1 stop10h 38m
Frontier
Sun 8/236:17 pm
STL
- PHX
1 stop18h 57m
Frontier
Deal found 7/23![Frontier logo]()
$220
Best flights from Mesa to St. LouisDiscover carefully curated flight deals from Mesa to St. Louis that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated July 25, 2026.
Discover carefully curated flight deals from Mesa to St. Louis that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated July 25, 2026.
This Expedia deal was found by Cheapflights users on 7/24. 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.
Thu 9/107:08 am
PHX
- STL
2 stops14h 51m
Alaska Airlines
Tue 9/156:29 am
STL
- PHX
2 stops14h 38m
Alaska Airlines
Deal found 7/24![Alaska Airlines logo]()
$284
This Southwest deal was found by Cheapflights users on 7/24. 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 8/251:20 pm
PHX
- STL
Nonstop2h 55m
Southwest
Thu 8/278:45 pm
STL
- PHX
Nonstop3h 10m
Southwest
Deal found 7/24![Southwest logo]()
$353
This Southwest deal was found by Cheapflights users on 7/23. 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.
Thu 9/35:00 am
PHX
- STL
Nonstop2h 50m
Southwest
Thu 9/106:00 pm
STL
- PHX
Nonstop3h 15m
Southwest
Deal found 7/23![Southwest logo]()
$353
This Southwest deal was found by Cheapflights users on 7/22. 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 8/196:00 am
PHX
- STL
Nonstop2h 55m
Southwest
Wed 8/267:35 am
STL
- PHX
Nonstop3h 15m
Southwest
Deal found 7/22![Southwest logo]()
$353
This Southwest deal was found by Cheapflights users on 7/24. 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.
Thu 9/106:55 pm
PHX
- STL
Nonstop3h 00m
Southwest
Tue 9/155:00 pm
STL
- PHX
Nonstop3h 15m
Southwest
Deal found 7/24![Southwest logo]()
$353
This Southwest deal was found by Cheapflights users on 7/24. 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.
Mon 8/245:00 am
PHX
- STL
Nonstop2h 50m
Southwest
Mon 8/318:45 pm
STL
- PHX
Nonstop3h 10m
Southwest
Deal found 7/24![Southwest logo]()
$353
This Southwest deal was found by Cheapflights users on 7/20. 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.
Thu 12/106:10 pm
PHX
- STL
Nonstop2h 50m
Southwest
Mon 12/148:25 am
STL
- PHX
1 stop5h 00m
Southwest
Deal found 7/20![Southwest logo]()
$359
This Southwest deal was found by Cheapflights users on 7/21. 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 11/35:50 am
PHX
- STL
Nonstop2h 45m
Southwest
Tue 11/108:25 am
STL
- PHX
1 stop4h 50m
Southwest
Deal found 7/21![Southwest logo]()
$359
This Southwest deal was found by Cheapflights users on 7/22. 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.
Mon 9/145:00 am
PHX
- STL
Nonstop2h 50m
Southwest
Wed 9/166:30 am
STL
- PHX
1 stop6h 30m
Southwest
Deal found 7/22![Southwest logo]()
$363
This Southwest deal was found by Cheapflights users on 7/21. 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.
Thu 9/179:40 am
PHX
- STL
1 stop5h 40m
Southwest
Mon 9/216:00 pm
STL
- PHX
Nonstop3h 15m
Southwest
Deal found 7/21![Southwest logo]()
$363
This Southwest deal was found by Cheapflights users on 7/20. 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 8/263:25 pm
PHX
- STL
Nonstop2h 55m
Southwest
Mon 8/3111:50 am
STL
- PHX
Nonstop3h 10m
Southwest
Deal found 7/20![Southwest logo]()
$393
Last-minute flights from Mesa to St. LouisDiscover last-minute flight deals from Mesa to St. Louis. Data last updated July 25, 2026 and is based on user searches.
Discover last-minute flight deals from Mesa to St. Louis. Data last updated July 25, 2026 and is based on user searches.
This Kiwi.com deal was found by Cheapflights users on 7/24. 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 8/136:40 am
PHX
- STL
1 stop10h 43m
Frontier
Sat 8/154:57 pm
STL
- PHX
1 stop7h 19m
Frontier
Deal found 7/24![Frontier logo]()
$215
This Kiwi.com deal was found by Cheapflights users on 7/25. 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 8/156:24 am
PHX
- STL
1 stop6h 32m
Frontier
Mon 8/178:08 pm
STL
- PHX
1 stop16h 03m
Frontier
Deal found 7/25![Frontier logo]()
$216
This Kiwi.com deal was found by Cheapflights users on 7/23. 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 8/156:24 am
PHX
- STL
1 stop6h 32m
Frontier
Mon 8/247:58 pm
STL
- PHX
1 stop19h 19m
Frontier
Deal found 7/23![Frontier logo]()
$226
This Kiwi.com deal was found by Cheapflights users on 7/22. 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 8/194:48 pm
PHX
- STL
1 stop24h 25m
Frontier
Sun 8/236:17 pm
STL
- PHX
1 stop18h 57m
Frontier
Deal found 7/22![Frontier logo]()
$222
This Kiwi.com deal was found by Cheapflights users on 7/22. 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 8/206:35 am
PHX
- STL
1 stop10h 38m
Frontier
Mon 8/317:58 pm
STL
- PHX
1 stop5h 41m
Frontier
Deal found 7/22![Frontier logo]()
$210
This Kiwi.com deal was found by Cheapflights users on 7/23. 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 8/206:35 am
PHX
- STL
1 stop10h 38m
Frontier
Sun 8/236:17 pm
STL
- PHX
1 stop18h 57m
Frontier
Deal found 7/23![Frontier logo]()
$220
This Kiwi.com deal was found by Cheapflights users on 7/23. 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 8/206:35 am
PHX
- STL
1 stop10h 38m
Frontier
Tue 8/255:27 pm
STL
- PHX
1 stop7h 33m
Frontier
Deal found 7/23![Frontier logo]()
$224
This Kiwi.com deal was found by Cheapflights users on 7/24. 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 8/214:40 pm
PHX
- STL
2 stops46h 42m
Frontier
Mon 8/247:58 pm
STL
- PHX
1 stop16h 13m
Frontier
Deal found 7/24![Frontier logo]()
$228
This Kiwi.com deal was found by Cheapflights users on 7/24. 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 8/248:35 am
PHX
- STL
1 stop8h 38m
Frontier
Mon 8/317:58 pm
STL
- PHX
1 stop5h 41m
Frontier
Deal found 7/24![Frontier logo]()
$206
One-way flights from Mesa to St. LouisSearch for one-way flight options from Mesa to St. Louis. Find affordable one-way fares based on user searches. Data last updated July 25, 2026.
Search for one-way flight options from Mesa to St. Louis. Find affordable one-way fares based on user searches. Data last updated July 25, 2026.
This Kiwi.com deal was found by Cheapflights users on 7/23. 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 9/109:06 am
PHX
- STL
1 stop8h 09m
Frontier
Deal found 7/23![Frontier logo]()
$103
This Trip.com deal was found by Cheapflights users on 7/23. 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.
Mon 8/248:35 am
PHX
- STL
1 stop8h 38m
Frontier
Deal found 7/23![Frontier logo]()
$104
This Trip.com deal was found by Cheapflights users on 7/22. 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 8/136:40 am
PHX
- STL
1 stop10h 43m
Frontier
Deal found 7/22![Frontier logo]()
$105
This Kiwi.com deal was found by Cheapflights users on 7/22. 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 8/206:35 am
PHX
- STL
1 stop10h 38m
Frontier
Deal found 7/22![Frontier logo]()
$107
This Kiwi.com deal was found by Cheapflights users on 7/22. 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.
Tue 10/206:36 pm
PHX
- STL
1 stop22h 39m
Frontier
Deal found 7/22![Frontier logo]()
$108
This Kiwi.com deal was found by Cheapflights users on 7/24. 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 10/226:05 am
PHX
- STL
1 stop11h 10m
Frontier
Deal found 7/24![Frontier logo]()
$109
This Kiwi.com deal was found by Cheapflights users on 7/21. 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 10/216:36 pm
PHX
- STL
1 stop22h 39m
Frontier
Deal found 7/21![Frontier logo]()
$111
This Kiwi.com deal was found by Cheapflights users on 7/22. 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 9/214:11 pm
PHX
- STL
2 stops39h 29m
Frontier
Deal found 7/22![Frontier logo]()
$115
This Kiwi.com deal was found by Cheapflights users on 7/23. 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 8/229:10 am
PHX
- STL
1 stop30h 12m
Frontier
Deal found 7/23![Frontier logo]()
$118
Find flight deals from Mesa to St. Louis
Keep the following information in mind while searching for Mesa to St. Louis flight deals. Data was last updated July 25, 2026.
Round-trip from | $177 (Kiwi.com) |
|---|---|
One-way from | $103 (Kiwi.com) |
Popular in | June |
Cheapest in | October |
Average price | $403 |
Cheapflights Fare Finder
Customize your flight search to find flights from Mesa to St. Louis 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 July 25, 2026.
Use the filters below to find and compare flights from Mesa to St. Louis that are best for you.
Fly from
Fly to
Route
Depart
Return
Cheapest round-trip
PhoenixSt. Louis
PHX - STL
PHXSTL
Phoenix Sky Harbor Intl
Thu 9/10
7:08 am-11:59 pm
2 stops14h 51m
Lambert-St Louis
Tue 9/15
6:29 am-7:07 pm
2 stops14h 38m
$284
PhoenixSt. Louis
PHX - STL
PHXSTL
Phoenix Sky Harbor Intl
Tue 8/25
1:20 pm-6:15 pm
Nonstop2h 55m
Lambert-St Louis
Thu 8/27
8:45 pm-9:55 pm
Nonstop3h 10m
$353
PhoenixSt. Louis
PHX - STL
PHXSTL
Phoenix Sky Harbor Intl
Thu 9/3
5:00 am-9:50 am
Nonstop2h 50m
Lambert-St Louis
Thu 9/10
6:00 pm-7:15 pm
Nonstop3h 15m
$353
PhoenixSt. Louis
PHX - STL
PHXSTL
Phoenix Sky Harbor Intl
Wed 8/19
6:00 am-10:55 am
Nonstop2h 55m
Lambert-St Louis
Wed 8/26
7:35 am-8:50 am
Nonstop3h 15m
$353
PhoenixSt. Louis
PHX - STL
PHXSTL
Phoenix Sky Harbor Intl
Thu 9/10
6:55 pm-11:55 pm
Nonstop3h 00m
Lambert-St Louis
Tue 9/15
5:00 pm-6:15 pm
Nonstop3h 15m
$353
Quickest round-trip
PhoenixSt. Louis
PHX - STL
PHXSTL
Phoenix Sky Harbor Intl
Mon 8/24
5:00 am-9:50 am
Nonstop2h 50m
Lambert-St Louis
Mon 8/31
8:45 pm-9:55 pm
Nonstop3h 10m
$353
PhoenixSt. Louis
PHX - STL
PHXSTL
Phoenix Sky Harbor Intl
Thu 12/10
6:10 pm-10:00 pm
Nonstop2h 50m
Lambert-St Louis
Mon 12/14
8:25 am-12:25 pm
1 stop5h 00m
$359
PhoenixSt. Louis
PHX - STL
PHXSTL
Phoenix Sky Harbor Intl
Tue 11/3
5:50 am-9:35 am
Nonstop2h 45m
Lambert-St Louis
Tue 11/10
8:25 am-12:15 pm
1 stop4h 50m
$359
PhoenixSt. Louis
PHX - STL
PHXSTL
Phoenix Sky Harbor Intl
Mon 9/14
5:00 am-9:50 am
Nonstop2h 50m
Lambert-St Louis
Wed 9/16
6:30 am-11:00 am
1 stop6h 30m
$363
PhoenixSt. Louis
PHX - STL
PHXSTL
Phoenix Sky Harbor Intl
Thu 9/17
9:40 am-5:20 pm
1 stop5h 40m
Lambert-St Louis
Mon 9/21
6:00 pm-7:15 pm
Nonstop3h 15m
$363
Showing 1-10 of 22 resultsSorted by cheapest first
Best time to book a flight from Mesa to St. Louis
Have a flexible travel schedule? Discover the best time to fly to St. Louis from Mesa with our price prediction graph.
PHX-STL
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 Mesa to St. Louis
MS9-STL
PHX-STL
What is the cheapest time of day to fly from MS9 to STL?
Find hourly flight availability from Mesa to St. Louis. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated July 25, 2026.
A simple way to save on the total cost of your ticket is to fly from Mesa to St. Louis in the afternoon. If you’re flexible enough to do this you can expect to save up to 13% on your trip compared to booking a flight in the evening.
Weekly flight availability from Mesa to St. Louis
Explore weekly flight availability from Mesa to St. Louis. Discover flights operating on different days of the week, giving you the flexibility to choose a travel day that best fits your plans. Compare info to find the most convenient option for your journey. Data last updated July 25, 2026.
The most flights from MS9 to STL are scheduled on a Monday (9 on average). You will have fewer flight options on Wednesday, which is when the least amount of flights are scheduled (3 on average).
How much does it cost to fly round-trip from Mesa to St. Louis?
Airfare is below average for this route at the moment.
Mesa to St. Louis flights typically cost between $338 and $430 in October.The cheapest round-trip price found within the last 5 days was $177 on Frontier (Oct 13-Oct 28).
What is the cheapest day to fly from Mesa to St. Louis?
Use this chart to determine the cheapest time to fly round-trip from Mesa to St. Louis. Price data was last updated on July 18, 2026.
Travelers seeking maximum savings on their Mesa to St. Louis flight should consider departing on Monday at noon 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.
Reviews of airlines servicing St. Louis
Get insights into the airlines that provide service to St. Louis. 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 St. Louis. Reviews last updated July 25, 2026.
Read reviews from past customers who have flown Southwest,Delta, andAmerican Airlines from Mesa to St. Louis. Users can see the overall rating for each airline as well as how each is rated in terms of entertainment options, comfort, food, crew/service, and boarding process.
Overall
8.0
Food
7.0
Boarding
8.1
Crew
8.6
Comfort
8.0
Entertainment
7.5
Reviews
1 / 20
8.0
ExcellentLibby,Jun 2026
TUS - LAS
Overall
8.0
Food
7.0
Boarding
8.1
Crew
8.6
Comfort
8.0
Entertainment
7.5
Reviews
1 / 20
8.0
ExcellentLibby,Jun 2026
TUS - LAS
Overall
8.0
Food
7.0
Boarding
8.1
Crew
8.6
Comfort
8.0
Entertainment
7.5
Reviews
1 / 20
8.0
ExcellentLibby,Jun 2026
TUS - LAS
Overall
8.0
Food
7.0
Boarding
8.1
Crew
8.6
Comfort
8.0
Entertainment
7.5
Reviews
1 / 20
8.0
ExcellentLibby,Jun 2026
TUS - LAS
Overall
8.0
Food
7.0
Boarding
8.1
Crew
8.6
Comfort
8.0
Entertainment
7.5
Reviews
1 / 20
8.0
ExcellentLibby,Jun 2026
TUS - LAS
Related info for your journey
Find useful and relevant information for your journey from Mesa to St. Louis. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.
Traveling to a place near St. Louis?
Book flights to St. Louis if you plan to visit one of these locationsEdwardsville
O'Fallon
Fenton
Swansea
Fairview Heights
Eureka
Maryland Heights
Collinsville
Wentzville
Glencoe
Chesterfield
Farmington
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Top 3 airlines flying from Mesa to St. Louis
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| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$99 | Average$230 | FlexibilityNo cancel fee | On-time62% | |
| Cheapest$229 | Average$383 | FlexibilityNo cancel fee | On-time71% | |
| Cheapest$267 | Average$415 | FlexibilityNo cancel fee | On-time63% |