$137+ Cheap flights from Boise to St. Louis (BOI - 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 9/28. Fares are subject to change and may not be available on all flights or dates of travel.
BOI — STL
Aug 26 — Sep 21
Round-trip
1 adult, Economy
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Find cheap flights from Boise 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.Cheap flight deals from Boise to St. Louis
Cheapest
Best
Last-minute
One-way
Cheapest flights from Boise to St. LouisExplore the most affordable flight options available from Boise to St. Louis. Find the lowest fares from popular airlines and budget airlines, with prices last updated on July 27, 2026.
Explore the most affordable flight options available from Boise to St. Louis. Find the lowest fares from popular airlines and budget airlines, with prices last updated on July 27, 2026.
This CheapOair 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 CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/812:23 pm
BOI
- STL
1 stop5h 52m
Frontier
Mon 10/128:10 pm
STL
- BOI
1 stop16h 18m
Frontier
Deal found 7/22![Frontier logo]()
$254
This Expedia 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 Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/1712:59 pm
BOI
- STL
1 stop5h 16m
Multiple Airlines
Tue 9/226:29 am
STL
- BOI
1 stop7h 06m
Multiple Airlines
Deal found 7/23![Multiple Airlines logo]()
$304
This CheapOair deal was found by Cheapflights users on 7/26. 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 10/233:52 pm
BOI
- STL
1 stop8h 25m
Frontier
Sun 10/255:19 pm
STL
- BOI
1 stop22h 38m
Frontier
Deal found 7/26![Frontier logo]()
$316
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 9/1512:59 pm
BOI
- STL
2 stops19h 41m
Frontier
Sat 9/1912:46 pm
STL
- BOI
1 stop27h 11m
Frontier
Deal found 7/22![Frontier logo]()
$321
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 9/173:52 pm
BOI
- STL
1 stop18h 59m
Frontier
Tue 9/2210:35 am
STL
- BOI
2 stops50h 29m
Frontier
Deal found 7/22![Frontier logo]()
$334
This Alaska Airlines 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 Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/96:00 am
BOI
- STL
1 stop10h 10m
Alaska Airlines
Tue 9/156:29 am
STL
- BOI
1 stop7h 06m
Alaska Airlines
Deal found 7/23![Alaska Airlines logo]()
$363
Best flights from Boise to St. LouisDiscover carefully curated flight deals from Boise to St. Louis that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated July 27, 2026.
Discover carefully curated flight deals from Boise to St. Louis that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated July 27, 2026.
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.
Tue 9/152:20 pm
BOI
- STL
1 stop7h 30m
Southwest
Sat 9/194:20 pm
STL
- BOI
1 stop6h 45m
Southwest
Deal found 7/23![Southwest logo]()
$363
This Alaska Airlines 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 Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 10/272:06 pm
BOI
- STL
1 stop8h 53m
Alaska Airlines
Wed 10/287:02 am
STL
- BOI
1 stop8h 09m
Alaska Airlines
Deal found 7/22![Alaska Airlines logo]()
$363
This American Airlines 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/91:50 pm
BOI
- STL
1 stop8h 53m
American Airlines
Tue 9/153:34 pm
STL
- BOI
1 stop7h 53m
American Airlines
Deal found 7/24![American Airlines logo]()
$369
This United Airlines deal was found by Cheapflights users on 7/26. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/25:00 am
BOI
- STL
2 stops8h 57m
United Airlines
Tue 9/84:46 pm
STL
- BOI
1 stop5h 59m
United Airlines
Deal found 7/26![United Airlines logo]()
$374
This Delta 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/91:06 pm
BOI
- STL
1 stop7h 25m
Delta
Tue 9/152:25 pm
STL
- BOI
2 stops9h 09m
Delta
Deal found 7/22![Delta logo]()
$398
This Southwest deal was found by Cheapflights users on 7/26. 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 9/26:00 am
BOI
- STL
1 stop8h 05m
Southwest
Tue 9/85:25 pm
STL
- BOI
1 stop6h 05m
Southwest
Deal found 7/26![Southwest logo]()
$369
This Southwest 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 8/223:25 pm
BOI
- STL
1 stop5h 55m
Southwest
Sat 8/294:20 pm
STL
- BOI
1 stop6h 40m
Southwest
Deal found 7/25![Southwest logo]()
$369
Last-minute flights from Boise to St. LouisDiscover last-minute flight deals from Boise to St. Louis. Data last updated July 27, 2026 and is based on user searches.
Discover last-minute flight deals from Boise to St. Louis. Data last updated July 27, 2026 and is based on user searches.
This KAYAK 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 KAYAK is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 7/273:10 pm
BOI
- STL
1 stop8h 06m
American Airlines
Wed 7/296:55 am
STL
- BOI
1 stop8h 25m
American Airlines
Deal found 7/22![American Airlines logo]()
$524
This CheapOair 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 CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 7/281:24 pm
BOI
- STL
1 stop4h 59m
Frontier
Wed 7/298:08 pm
STL
- BOI
1 stop17h 21m
Frontier
Deal found 7/23![Frontier logo]()
$421
This American Airlines 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 8/712:12 pm
BOI
- STL
1 stop6h 31m
American Airlines
Sun 8/98:36 am
STL
- BOI
1 stop6h 23m
American Airlines
Deal found 7/22![American Airlines logo]()
$587
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.
Sat 8/83:25 pm
BOI
- STL
1 stop5h 55m
Southwest
Wed 8/125:35 am
STL
- BOI
1 stop6h 15m
Southwest
Deal found 7/24![Southwest logo]()
$597
This American Airlines 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 8/183:19 pm
BOI
- STL
1 stop7h 55m
American Airlines
Thu 8/279:32 am
STL
- BOI
1 stop5h 57m
American Airlines
Deal found 7/25![American Airlines logo]()
$369
This Southwest 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 8/2212:55 pm
BOI
- STL
2 stops8h 25m
Southwest
Sat 8/292:25 pm
STL
- BOI
2 stops8h 35m
Southwest
Deal found 7/25![Southwest logo]()
$379
This Priceline 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 Priceline is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 8/3012:24 pm
BOI
- STL
1 stop5h 49m
Multiple Airlines
Fri 9/46:08 pm
STL
- BOI
1 stop6h 47m
Multiple Airlines
Deal found 7/23![Multiple Airlines logo]()
$398
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.
Sun 8/3012:24 pm
BOI
- STL
1 stop5h 49m
Frontier
Fri 9/46:17 pm
STL
- BOI
2 stops42h 12m
Frontier
Deal found 7/23![Frontier logo]()
$466
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.
Sun 8/304:45 pm
BOI
- STL
2 stops7h 25m
Southwest
Fri 9/43:45 pm
STL
- BOI
2 stops7h 55m
Southwest
Deal found 7/23![Southwest logo]()
$527
One-way flights from Boise to St. LouisSearch for one-way flight options from Boise to St. Louis. Find affordable one-way fares based on user searches. Data last updated July 27, 2026.
Search for one-way flight options from Boise to St. Louis. Find affordable one-way fares based on user searches. Data last updated July 27, 2026.
This CheapOair 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 CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 9/282:50 pm
BOI
- STL
1 stop19h 42m
Frontier
Deal found 7/25![Frontier logo]()
$137
This Priceline deal was found by Cheapflights users on 7/27. 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.
Sun 8/3012:24 pm
BOI
- STL
1 stop5h 49m
Frontier
Deal found 7/27![Frontier logo]()
$159
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.
Sun 9/132:50 pm
BOI
- STL
2 stops27h 25m
Frontier
Deal found 7/24![Frontier logo]()
$164
This Expedia deal was found by Cheapflights users on 7/26. 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.
Sun 8/2312:24 pm
BOI
- STL
1 stop5h 49m
Frontier
Deal found 7/26![Frontier logo]()
$172
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.
Sat 8/152:25 pm
BOI
- STL
1 stop6h 10m
Southwest
Deal found 7/23![Southwest logo]()
$182
This CheapOair 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 CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 9/272:50 pm
BOI
- STL
1 stop20h 01m
Frontier
Deal found 7/25![Frontier logo]()
$184
This Priceline deal was found by Cheapflights users on 7/26. 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 8/242:17 pm
BOI
- STL
1 stop8h 42m
Alaska Airlines
Deal found 7/26![Alaska Airlines logo]()
$185
This United Airlines 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 11/265:00 am
BOI
- STL
2 stops9h 43m
United Airlines
Deal found 7/24![United Airlines logo]()
$190
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 8/61:24 pm
BOI
- STL
1 stop4h 59m
Frontier
Deal found 7/24![Frontier logo]()
$195
This American Airlines 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 8/151:55 pm
BOI
- STL
2 stops8h 47m
American Airlines
Deal found 7/23![American Airlines logo]()
$206
This Delta 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 11/255:45 pm
BOI
- STL
1 stop5h 51m
Delta
Deal found 7/23![Delta logo]()
$209
Find flight deals from Boise to St. Louis
Discover tips and strategies to find the most affordable flight options for your journey from Boise (BOI) to St. Louis (STL). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated July 27, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $254 (CheapOair) |
One-way from | $137 (CheapOair) |
Popular in | March |
Cheapest in | October |
Average price | $492 |
Cheapflights Fare Finder
Customize your flight search to find flights from Boise 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 27, 2026.
Use the filters below to find and compare flights from Boise to St. Louis that are best for you.
Fly from
Fly to
Route
Depart
Return
Cheapest round-trip
BoiseSt. Louis
BOI - STL
BOISTL
Boise Air Term. Gowen Fld
Tue 9/15
2:20 pm-10:50 pm
1 stop7h 30m
Lambert-St Louis
Sat 9/19
4:20 pm-10:05 pm
1 stop6h 45m
$363
BoiseSt. Louis
BOI - STL
BOISTL
Boise Air Term. Gowen Fld
Tue 10/27
2:06 pm-11:59 pm
1 stop8h 53m
Lambert-St Louis
Wed 10/28
7:02 am-2:11 pm
1 stop8h 09m
$363
BoiseSt. Louis
BOI - STL
BOISTL
Boise Air Term. Gowen Fld
Wed 9/9
1:50 pm-11:43 pm
1 stop8h 53m
Lambert-St Louis
Tue 9/15
3:34 pm-10:27 pm
1 stop7h 53m
$369
BoiseSt. Louis
BOI - STL
BOISTL
Boise Air Term. Gowen Fld
Wed 9/2
6:00 am-3:05 pm
1 stop8h 05m
Lambert-St Louis
Tue 9/8
5:25 pm-10:30 pm
1 stop6h 05m
$369
Quickest round-trip
BoiseSt. Louis
BOI - STL
BOISTL
Boise Air Term. Gowen Fld
Sat 8/22
3:25 pm-10:20 pm
1 stop5h 55m
Lambert-St Louis
Sat 8/29
4:20 pm-10:00 pm
1 stop6h 40m
$369
BoiseSt. Louis
BOI - STL
BOISTL
Boise Air Term. Gowen Fld
Wed 9/2
5:00 am-2:57 pm
2 stops8h 57m
Lambert-St Louis
Tue 9/8
4:46 pm-9:45 pm
1 stop5h 59m
$374
BoiseSt. Louis
BOI - STL
BOISTL
Boise Air Term. Gowen Fld
Wed 9/9
1:06 pm-9:31 pm
1 stop7h 25m
Lambert-St Louis
Tue 9/15
2:25 pm-10:34 pm
2 stops9h 09m
$398
Cheapest one-way
BoiseSt. Louis
BOI - STL
BOISTL
Boise Air Term. Gowen Fld
Mon 9/28
2:50 pm-11:32 am
1 stop19h 42m
$137
Quickest one-way
BoiseSt. Louis
BOI - STL
BOISTL
Boise Air Term. Gowen Fld
Sun 8/23
12:24 pm-7:13 pm
1 stop5h 49m
$172
BoiseSt. Louis
BOI - STL
BOISTL
Boise Air Term. Gowen Fld
Sat 8/15
2:25 pm-9:35 pm
1 stop6h 10m
$182
Showing 1-10 of 17 resultsSorted by cheapest first
Compare providers for flights from Boise to St. Louis
Provider information is updated monthly. Please note that these providers often have deals for this flight, but the availability may vary on a day-by-day basis on Cheapflights.
Use the table below to compare price accuracy, trust ratings, and cancellation policies for each provider offering flight deals from Boise to St. Louis in July.
| Provider | Price Accuracy | Trust Score* |
|---|---|---|
| Price Accuracy1 star | Trust Score*3 stars | |
| Price Accuracy3 stars | Trust Score*3 stars |
- Most accurate provider: When it comes to deals on Boise-St. Louis flights, users find the pricing of FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on Boise-St. Louis flight deals on Cheapflights vs. FlightHub >95% of the time. Price accuracy is based on data collected from Boise-St. Louis flight searches over the past month and is updated monthly.
- Most trusted provider: When it comes to deals on Boise-St. Louis flights, Cheapflights users trust FlightHub the most. FlightHub has received a user feedback score of 3 out of 3 stars (3 being the best), meaning they have been trusted the most by Cheapflights users looking for Boise-St. Louis flight deals. Provider user feedback score is based on Cheapflights searches over the past month and is updated monthly.
Best time to book a flight from Boise to St. Louis
Have a flexible travel schedule? Discover the best time to fly to St. Louis from Boise with our price prediction graph.
BOI-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 Boise to St. Louis
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 27, 2026.
Peruse reviews from past customers who have flown with Southwest,Delta, andUnited Airlines from Boise to St. Louis 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.
Crew
8.6
Food
7.0
Entertainment
7.5
Comfort
8.0
Overall
8.0
Boarding
8.1
Reviews
1 / 20
8.0
ExcellentLibby,Jun 2026
TUS - LAS
Crew
8.6
Food
7.0
Entertainment
7.5
Comfort
8.0
Overall
8.0
Boarding
8.1
Reviews
1 / 20
8.0
ExcellentLibby,Jun 2026
TUS - LAS
Crew
8.6
Food
7.0
Entertainment
7.5
Comfort
8.0
Overall
8.0
Boarding
8.1
Reviews
1 / 20
8.0
ExcellentLibby,Jun 2026
TUS - LAS
Crew
8.6
Food
7.0
Entertainment
7.5
Comfort
8.0
Overall
8.0
Boarding
8.1
Reviews
1 / 20
8.0
ExcellentLibby,Jun 2026
TUS - LAS
Related info for your journey
Find useful and relevant information for your journey from Boise 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
Browse thousands of different options on Cheapflights for your next trip
Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.
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Complete your trip
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Boise and St. Louis flights
Browse other Boise and St. Louis flight options. Last updated on July 27, 2026.
Other flights from Boise
Browse through other flights departing from Boise. Flights are based on user searches made on Cheapflights and were last updated on July 27, 2026.
Popular flight searches
Check out other popular destinations found by fellow travelers in 2026
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 July 27, 2026.
Top 3 airlines flying from Boise to St. Louis
Discover the top 3 airlines that operate flights from Boise 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 July 27, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$260 | Average$444 | FlexibilityNo cancel fee | On-timeN/A | |
| Cheapest$283 | Average$477 | FlexibilityNo cancel fee | On-time69% | |
| Cheapest$347 | Average$502 | FlexibilityNo cancel fee | On-time63% |