$58+ Cheap flights from Tempe, 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 2/20. Fares are subject to change and may not be available on all flights or dates of travel.
PHX — STL
Mar 8 — Mar 151
1 adult, Economy
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Find cheap flights from Tempe 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 Tempe to Lambert-St Louis are usually found in December or January, booked 25 days in advance, depart on a Friday or Tuesday and return on a Wednesday
Cheap flight deals from Tempe to St. Louis
Cheapest
Best
Last-minute
One-way
Cheapest flights from Tempe to St. LouisExplore the most affordable flight options available from Tempe to St. Louis. Find the lowest fares from popular airlines and budget airlines, with prices last updated on February 6, 2026.
Explore the most affordable flight options available from Tempe to St. Louis. Find the lowest fares from popular airlines and budget airlines, with prices last updated on February 6, 2026.
This Frontier deal was found by Cheapflights users on 2/4. 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.
Wed 2/256:00 am
PHX
- STL
1 stop8h 53m
Frontier
Fri 2/279:02 pm
STL
- PHX
Nonstop3h 41m
Frontier
Deal found 2/4![Frontier logo]()
$123
This Frontier deal was found by Cheapflights users on 2/3. 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.
Wed 2/259:52 am
PHX
- STL
1 stop5h 01m
Frontier
Sat 2/282:51 pm
STL
- PHX
1 stop10h 08m
Frontier
Deal found 2/3![Frontier logo]()
$128
This Frontier deal was found by Cheapflights users on 2/2. 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 2/204:14 pm
PHX
- STL
Nonstop2h 53m
Frontier
Mon 2/2310:11 pm
STL
- PHX
1 stop16h 44m
Frontier
Deal found 2/2![Frontier logo]()
$133
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.
Fri 3/610:24 pm
PHX
- STL
1 stop10h 25m
Frontier
Sun 3/810:47 pm
STL
- PHX
Nonstop3h 41m
Frontier
Deal found 2/5![Frontier logo]()
$137
This Frontier deal was found by Cheapflights users on 2/2. 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 2/134:14 pm
PHX
- STL
Nonstop2h 53m
Frontier
Mon 2/168:47 pm
STL
- PHX
Nonstop3h 41m
Frontier
Deal found 2/2![Frontier logo]()
$143
This Expedia deal was found by Cheapflights users on 2/2. 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 2/266:57 pm
PHX
- STL
1 stop25h 29m
Frontier
Mon 3/210:11 pm
STL
- PHX
1 stop16h 44m
Frontier
Deal found 2/2![Frontier logo]()
$148
This Kiwi.com deal was found by Cheapflights users on 2/2. 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 3/176:55 pm
PHX
- STL
1 stop12h 54m
Frontier
Mon 3/238:12 pm
STL
- PHX
1 stop23h 34m
Frontier
Deal found 2/2![Frontier logo]()
$152
This Expedia deal was found by Cheapflights users on 2/4. 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.
Wed 2/188:04 pm
PHX
- STL
1 stop24h 22m
Frontier
Fri 2/209:02 pm
STL
- PHX
Nonstop3h 41m
Frontier
Deal found 2/4![Frontier logo]()
$154
This Kiwi.com deal was found by Cheapflights users on 2/3. 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 3/610:24 pm
PHX
- STL
1 stop10h 25m
Frontier
Tue 3/108:06 pm
STL
- PHX
1 stop21h 12m
Frontier
Deal found 2/3![Frontier logo]()
$156
This Frontier deal was found by Cheapflights users on 2/3. 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 3/125:09 pm
PHX
- STL
Nonstop2h 53m
Frontier
Sun 3/1510:47 pm
STL
- PHX
Nonstop3h 41m
Frontier
Deal found 2/3![Frontier logo]()
$158
This Kiwi.com deal was found by Cheapflights users on 2/3. 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 2/1711:59 pm
PHX
- STL
1 stop21h 28m
Frontier
Mon 2/238:47 pm
STL
- PHX
Nonstop3h 41m
Frontier
Deal found 2/3![Frontier logo]()
$159
Best flights from Tempe to St. LouisDiscover carefully curated flight deals from Tempe to St. Louis that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated February 6, 2026.
Discover carefully curated flight deals from Tempe to St. Louis that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated February 6, 2026.
This Frontier deal was found by Cheapflights users on 2/3. 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.
Wed 2/256:00 am
PHX
- STL
1 stop8h 53m
Frontier
Sat 2/282:51 pm
STL
- PHX
1 stop7h 50m
Frontier
Deal found 2/3![Frontier logo]()
$128
This Kiwi.com deal was found by Cheapflights users on 2/1. 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 3/129:24 pm
PHX
- STL
1 stop10h 25m
Multiple Airlines
Sun 3/158:06 pm
STL
- PHX
2 stops20h 40m
Multiple Airlines
Deal found 2/1![Multiple Airlines logo]()
$253
This Southwest deal was found by Cheapflights users on 2/4. 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 3/185:55 am
PHX
- STL
Nonstop2h 45m
Southwest
Wed 3/256:30 pm
STL
- PHX
Nonstop3h 30m
Southwest
Deal found 2/4![Southwest logo]()
$315
This Frontier 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 Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 3/23:59 pm
PHX
- STL
Nonstop2h 53m
Frontier
Sun 3/810:47 pm
STL
- PHX
Nonstop3h 41m
Frontier
Deal found 2/5![Frontier logo]()
$169
This Kiwi.com deal was found by Cheapflights users on 2/1. 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 3/27:36 pm
PHX
- STL
2 stops34h 15m
Frontier
Mon 3/98:12 pm
STL
- PHX
1 stop17h 42m
Frontier
Deal found 2/1![Frontier logo]()
$177
This Kiwi.com deal was found by Cheapflights users on 2/4. 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 2/279:35 pm
PHX
- STL
1 stop19h 11m
Frontier
Sun 3/110:11 pm
STL
- PHX
1 stop11h 59m
Frontier
Deal found 2/4![Frontier logo]()
$197
This Kiwi.com deal was found by Cheapflights users on 2/1. 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 2/259:52 am
PHX
- STL
1 stop5h 01m
Frontier
Sun 3/110:11 pm
STL
- PHX
2 stops17h 52m
Frontier
Deal found 2/1![Frontier logo]()
$211
This Kiwi.com deal was found by Cheapflights users on 2/1. 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 3/269:24 pm
PHX
- STL
1 stop10h 25m
Frontier
Mon 3/308:12 pm
STL
- PHX
2 stops16h 47m
Frontier
Deal found 2/1![Frontier logo]()
$226
This Frontier 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 Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 3/155:09 pm
PHX
- STL
Nonstop2h 53m
Frontier
Wed 3/184:51 pm
STL
- PHX
1 stop8h 53m
Frontier
Deal found 2/5![Frontier logo]()
$278
This Kiwi.com deal was found by Cheapflights users on 2/2. 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 3/144:27 pm
PHX
- STL
1 stop18h 03m
Frontier
Mon 3/168:12 pm
STL
- PHX
1 stop23h 34m
Frontier
Deal found 2/2![Frontier logo]()
$299
Last-minute flights from Tempe to St. LouisDiscover last-minute flight deals from Tempe to St. Louis. Data last updated February 6, 2026 and is based on user searches.
Discover last-minute flight deals from Tempe to St. Louis. Data last updated February 6, 2026 and is based on user searches.
This Frontier deal was found by Cheapflights users on 2/2. 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 2/134:14 pm
PHX
- STL
Nonstop2h 53m
Frontier
Mon 2/168:47 pm
STL
- PHX
Nonstop3h 41m
Frontier
Deal found 2/2![Frontier logo]()
$143
This Kiwi.com deal was found by Cheapflights users on 2/3. 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 2/1711:59 pm
PHX
- STL
1 stop21h 28m
Frontier
Mon 2/238:47 pm
STL
- PHX
Nonstop3h 41m
Frontier
Deal found 2/3![Frontier logo]()
$159
This Expedia deal was found by Cheapflights users on 2/4. 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.
Wed 2/188:04 pm
PHX
- STL
1 stop24h 22m
Frontier
Fri 2/209:02 pm
STL
- PHX
Nonstop3h 41m
Frontier
Deal found 2/4![Frontier logo]()
$154
This Frontier deal was found by Cheapflights users on 2/2. 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 2/204:14 pm
PHX
- STL
Nonstop2h 53m
Frontier
Mon 2/2310:11 pm
STL
- PHX
1 stop16h 44m
Frontier
Deal found 2/2![Frontier logo]()
$133
This Frontier deal was found by Cheapflights users on 2/4. 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.
Wed 2/256:00 am
PHX
- STL
1 stop8h 53m
Frontier
Fri 2/279:02 pm
STL
- PHX
Nonstop3h 41m
Frontier
Deal found 2/4![Frontier logo]()
$123
This Frontier deal was found by Cheapflights users on 2/3. 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.
Wed 2/259:52 am
PHX
- STL
1 stop5h 01m
Frontier
Sat 2/282:51 pm
STL
- PHX
1 stop10h 08m
Frontier
Deal found 2/3![Frontier logo]()
$128
This Expedia deal was found by Cheapflights users on 2/2. 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 2/266:57 pm
PHX
- STL
1 stop25h 29m
Frontier
Mon 3/210:11 pm
STL
- PHX
1 stop16h 44m
Frontier
Deal found 2/2![Frontier logo]()
$148
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.
Fri 3/610:24 pm
PHX
- STL
1 stop10h 25m
Frontier
Sun 3/810:47 pm
STL
- PHX
Nonstop3h 41m
Frontier
Deal found 2/5![Frontier logo]()
$137
This Kiwi.com deal was found by Cheapflights users on 2/3. 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 3/610:24 pm
PHX
- STL
1 stop10h 25m
Frontier
Tue 3/108:06 pm
STL
- PHX
1 stop21h 12m
Frontier
Deal found 2/3![Frontier logo]()
$156
This Frontier deal was found by Cheapflights users on 2/3. 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 3/125:09 pm
PHX
- STL
Nonstop2h 53m
Frontier
Sun 3/1510:47 pm
STL
- PHX
Nonstop3h 41m
Frontier
Deal found 2/3![Frontier logo]()
$158
This Kiwi.com deal was found by Cheapflights users on 2/2. 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 3/176:55 pm
PHX
- STL
1 stop12h 54m
Frontier
Mon 3/238:12 pm
STL
- PHX
1 stop23h 34m
Frontier
Deal found 2/2![Frontier logo]()
$152
One-way flights from Tempe to St. LouisSearch for one-way flight options from Tempe to St. Louis. Find affordable one-way fares based on user searches. Data last updated February 6, 2026.
Search for one-way flight options from Tempe to St. Louis. Find affordable one-way fares based on user searches. Data last updated February 6, 2026.
This Kiwi.com deal was found by Cheapflights users on 2/4. 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 2/204:14 pm
PHX
- STL
Nonstop2h 53m
Frontier
Deal found 2/4![Frontier logo]()
$58
This Priceline 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 Priceline is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 2/134:14 pm
PHX
- STL
Nonstop2h 53m
Frontier
Deal found 2/5![Frontier logo]()
$59
This Super.com deal was found by Cheapflights users on 2/1. 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.
Wed 2/259:52 am
PHX
- STL
1 stop5h 01m
Frontier
Deal found 2/1![Frontier logo]()
$63
This Frontier deal was found by Cheapflights users on 2/3. 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 2/286:00 am
PHX
- STL
1 stop6h 56m
Frontier
Deal found 2/3![Frontier logo]()
$64
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.
Fri 3/610:24 pm
PHX
- STL
1 stop10h 25m
Frontier
Deal found 2/5![Frontier logo]()
$66
This Super.com deal was found by Cheapflights users on 2/2. 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 3/85:09 pm
PHX
- STL
Nonstop2h 53m
Frontier
Deal found 2/2![Frontier logo]()
$68
This Super.com deal was found by Cheapflights users on 2/2. 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.
Tue 2/246:51 pm
PHX
- STL
1 stop20h 02m
Frontier
Deal found 2/2![Frontier logo]()
$69
This Super.com deal was found by Cheapflights users on 2/2. 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.
Wed 3/49:52 am
PHX
- STL
1 stop5h 01m
Frontier
Deal found 2/2![Frontier logo]()
$73
This Frontier deal was found by Cheapflights users on 2/2. 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 2/262:34 pm
PHX
- STL
1 stop5h 52m
Frontier
Deal found 2/2![Frontier logo]()
$74
This Kiwi.com deal was found by Cheapflights users on 2/3. 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 3/316:45 pm
PHX
- STL
1 stop13h 03m
Frontier
Deal found 2/3![Frontier logo]()
$78
Find flight deals from Tempe to St. Louis
Keep the following information in mind while searching for Tempe to St. Louis flight deals. Data was last updated February 6, 2026.
Round-trip from | $123 (Frontier) |
|---|---|
One-way from | $58 (Kiwi.com) |
Popular in | April |
Cheapest in | December |
Average price | $359 |
Cheapflights Fare Finder
Customize your flight search to find flights from Tempe 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 February 6, 2026.
Use the filters below to find and compare flights from Tempe to St. Louis that are best for you.
Fly from
Tempe
Fly to
St. Louis
Route
Depart
Return
Price
PhoenixSt. Louis
PHX - STL
PHXSTL
Phoenix Sky Harbor Intl
Wed 2/25
6:00 am-3:53 pm
1 stop8h 53m
Lambert-St Louis
Sat 2/28
2:51 pm-9:41 pm
1 stop7h 50m
$128
PhoenixSt. Louis
PHX - STL
PHXSTL
Phoenix Sky Harbor Intl
Mon 3/2
3:59 pm-7:52 pm
Nonstop2h 53m
Lambert-St Louis
Sun 3/8
10:47 pm-12:28 am
Nonstop3h 41m
$169
PhoenixSt. Louis
PHX - STL
PHXSTL
Phoenix Sky Harbor Intl
Mon 3/2
7:36 pm-6:51 am
2 stops34h 15m
Lambert-St Louis
Mon 3/9
8:12 pm-11:54 am
1 stop17h 42m
$177
PhoenixSt. Louis
PHX - STL
PHXSTL
Phoenix Sky Harbor Intl
Fri 2/27
9:35 pm-5:46 pm
1 stop19h 11m
Lambert-St Louis
Sun 3/1
10:11 pm-9:10 am
1 stop11h 59m
$197
PhoenixSt. Louis
PHX - STL
PHXSTL
Phoenix Sky Harbor Intl
Wed 2/25
9:52 am-3:53 pm
1 stop5h 01m
Lambert-St Louis
Sun 3/1
10:11 pm-3:03 pm
2 stops17h 52m
$211
PhoenixSt. Louis
PHX - STL
PHXSTL
Phoenix Sky Harbor Intl
Thu 3/26
9:24 pm-9:49 am
1 stop10h 25m
Lambert-St Louis
Mon 3/30
8:12 pm-10:59 am
2 stops16h 47m
$226
PhoenixSt. Louis
PHX - STL
PHXSTL
Phoenix Sky Harbor Intl
Thu 3/12
9:24 pm-9:49 am
1 stop10h 25m
Lambert-St Louis
Sun 3/15
8:06 pm-2:46 pm
2 stops20h 40m
$253
PhoenixSt. Louis
PHX - STL
PHXSTL
Phoenix Sky Harbor Intl
Sun 3/15
5:09 pm-10:02 pm
Nonstop2h 53m
Lambert-St Louis
Wed 3/18
4:51 pm-11:44 pm
1 stop8h 53m
$278
PhoenixSt. Louis
PHX - STL
PHXSTL
Phoenix Sky Harbor Intl
Sat 3/14
4:27 pm-12:30 pm
1 stop18h 03m
Lambert-St Louis
Mon 3/16
8:12 pm-5:46 pm
1 stop23h 34m
$299
PhoenixSt. Louis
PHX - STL
PHXSTL
Phoenix Sky Harbor Intl
Wed 3/18
5:55 am-10:40 am
Nonstop2h 45m
Lambert-St Louis
Wed 3/25
6:30 pm-8:00 pm
Nonstop3h 30m
$315
Showing 1-10 of 19 results
Best time to book a flight from Tempe to St. Louis
Have a flexible travel schedule? Discover the best time to fly to St. Louis from Tempe 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 Tempe to St. Louis
TM9-STL
PHX-STL
How far ahead should I book a flight from Tempe to St. Louis?
Use this chart to determine the optimal time to book a round-trip flight from Tempe to St. Louis. Price data was last updated on January 30, 2026.
The best time to book flights from Tempe to St. Louis is 25 days before your desired departure date. The cost of your flight will likely increase significantly if you book two weeks in advance of your flight.
What is the cheapest month to book a flight from Tempe to St. Louis?
Currently, January is the cheapest month in which you can book a flight from Tempe to St. Louis (average of $97). Flying from Tempe to St. Louis in April is currently the most expensive (average of $304). 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 TM9 to STL?
Find hourly flight availability from Tempe 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 February 6, 2026.
Unlike in the evening, when flights are generally more expensive, you can save up to 6% on flights from Tempe to St. Louis by exploring options for tickets in the afternoon.
What is the cheapest day to fly from Tempe to St. Louis?
Use this chart to determine the cheapest time to fly round-trip from Tempe to St. Louis. Price data was last updated on January 31, 2026.
Travelers seeking maximum savings on their Tempe to St. Louis flight should consider departing on Monday at noon when fares are most often at their lowest. Sunday afternoons flights should be avoided if possible as fares are typically the most expensive at this time.
Weekly flight availability from Tempe to St. Louis
Explore weekly flight availability from Tempe 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 February 6, 2026.
The most flights from TM9 to STL are scheduled on a Monday (10 on average). You will have fewer flight options on Saturday, which is when the least amount of flights are scheduled (2 on average).
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 February 6, 2026.
See what other customers who have flown with Southwest, Delta, and American Airlines from Tempe to St. Louis have to say. You can also see how each airline compares in terms of entertainment options, comfort, food, crew/service, and boarding process.
Crew
8.6
Boarding
8.1
Food
7.0
Entertainment
7.5
Comfort
8.0
Overall
8.0
Reviews
1 / 20
2.0
MediocreThomas,Dec 2025
SEA - DEN
Crew
8.6
Boarding
8.1
Food
7.0
Entertainment
7.5
Comfort
8.0
Overall
8.0
Reviews
1 / 20
2.0
MediocreThomas,Dec 2025
SEA - DEN
Crew
8.6
Boarding
8.1
Food
7.0
Entertainment
7.5
Comfort
8.0
Overall
8.0
Reviews
1 / 20
2.0
MediocreThomas,Dec 2025
SEA - DEN
Crew
8.6
Boarding
8.1
Food
7.0
Entertainment
7.5
Comfort
8.0
Overall
8.0
Reviews
1 / 20
2.0
MediocreThomas,Dec 2025
SEA - DEN
Crew
8.6
Boarding
8.1
Food
7.0
Entertainment
7.5
Comfort
8.0
Overall
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 Tempe 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
Swansea
Fairview Heights
Maryland Heights
Collinsville
Eureka
Glencoe
Chesterfield
Alton
Farmington
Festus
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Alternative routes for Tempe to St. Louis
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Complete your trip
Complete your trip to St. Louis by adding a car rental and/or hotel reservation to your travel itinerary.
Search flights from Tempe to St. Louis by cabin class
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Tempe and St. Louis flights
Browse other Tempe and St. Louis flight options. Last updated on February 6, 2026.
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Other flights to St. Louis
Explore flights to St. Louis departing from other origins. Flights are based on user searches made on Cheapflights and were last updated on February 6, 2026.
Tempe to St. Louis flights
Consider these flights traveling from Tempe to St. Louis.
Top 4 airlines flying from Tempe to St. Louis
Discover the top 4 airlines that operate flights from Tempe to St. Louis. 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 6, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$101 | Average$209 | FlexibilityNo cancel fee | On-time62% | |
| Cheapest$229 | Average$388 | FlexibilityNo cancel fee | On-time71% | |
| Cheapest$236 | Average$367 | FlexibilityNo cancel fee | On-timeN/A | |
| Cheapest$258 | Average$396 | FlexibilityNo cancel fee | On-time63% |