$160+ Cheap flights from Boise to St. Louis (BOI - STL)
This is the cheapest round-trip flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 10/8. Fares are subject to change and may not be available on all flights or dates of travel.
BOI — STL
Oct 8 — Oct 151
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
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Best
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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 September 8, 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 September 8, 2026.
This CheapOair deal was found by Cheapflights users on 9/6. 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 CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/12:50 pm -
1 stop19h 27m
Sun 10/412:27 pm -
1 stop26h 28m
Deal found 9/6![Frontier logo]()
$332
This Delta deal was found by Cheapflights users on 9/6. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 12/46:35 am -
2 stops8h 55m
Tue 12/86:03 am -
2 stops12h 13m
Deal found 9/6![Delta logo]()
$338
This Delta deal was found by Cheapflights users on 9/6. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/227:13 pm -
2 stops12h 40m
Mon 10/262:22 pm -
2 stops8h 46m
Deal found 9/6![Delta logo]()
$343
This CheapOair deal was found by Cheapflights users on 9/3. 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 CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/102:50 pm -
1 stop19h 27m
Sun 9/1312:27 pm -
1 stop26h 28m
Deal found 9/3![Frontier logo]()
$350
This Southwest deal was found by Cheapflights users on 9/3. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/294:45 pm -
1 stop5h 40m
Sat 10/315:55 am -
1 stop5h 10m
Deal found 9/3![Southwest logo]()
$364
This Alaska Airlines deal was found by Cheapflights users on 9/3. 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 Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/242:16 pm -
1 stop8h 43m
Tue 9/296:29 am -
1 stop7h 06m
Deal found 9/3![Alaska Airlines logo]()
$369
This Southwest deal was found by Cheapflights users on 9/3. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/304:45 pm -
1 stop5h 40m
Mon 11/28:50 am -
1 stop9h 10m
Deal found 9/3![Southwest logo]()
$391
This Delta deal was found by Cheapflights users on 9/6. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 10/276:45 am -
2 stops8h 58m
Wed 11/46:21 am -
2 stops11h 53m
Deal found 9/6![Delta logo]()
$394
This United Airlines deal was found by Cheapflights users on 9/3. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 9/255:30 pm -
1 stop5h 14m
Tue 9/297:08 am -
1 stop6h 50m
Deal found 9/3![United Airlines logo]()
$396
This United Airlines deal was found by Cheapflights users on 9/3. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/305:00 am -
2 stops9h 43m
Mon 11/21:40 pm -
1 stop5h 23m
Deal found 9/3![United Airlines logo]()
$401
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 September 8, 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 September 8, 2026.
This Delta deal was found by Cheapflights users on 9/6. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 12/46:35 am -
2 stops8h 55m
Tue 12/86:03 am -
2 stops12h 13m
Deal found 9/6![Delta logo]()
$338
This Southwest deal was found by Cheapflights users on 9/3. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/304:45 pm -
1 stop5h 40m
Mon 11/28:50 am -
1 stop9h 10m
Deal found 9/3![Southwest logo]()
$391
This United Airlines deal was found by Cheapflights users on 9/3. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/305:00 am -
2 stops9h 43m
Mon 11/21:40 pm -
1 stop5h 23m
Deal found 9/3![United Airlines logo]()
$401
This American Airlines deal was found by Cheapflights users on 9/4. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 12/112:41 pm -
1 stop7h 52m
Wed 12/166:00 am -
1 stop8h 51m
Deal found 9/4![American Airlines logo]()
$429
This Alaska Airlines deal was found by Cheapflights users on 9/3. 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 Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/18:03 am -
2 stops12h 54m
Mon 10/57:02 am -
1 stop9h 21m
Deal found 9/3![Alaska Airlines logo]()
$501
This American Airlines deal was found by Cheapflights users on 9/7. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/13:21 pm -
1 stop8h 06m
Mon 10/55:40 am -
1 stop9h 11m
Deal found 9/7![American Airlines logo]()
$441
This Southwest deal was found by Cheapflights users on 9/5. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 11/85:35 am -
2 stops7h 10m
Fri 11/136:30 pm -
1 stop5h 25m
Deal found 9/5![Southwest logo]()
$464
This Southwest deal was found by Cheapflights users on 9/7. 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 10/712:55 pm -
2 stops7h 40m
Mon 10/129:55 pm -
2 stops14h 25m
Deal found 9/7![Southwest logo]()
$483
Last-minute flights from Boise to St. LouisDiscover last-minute flight deals from Boise to St. Louis. Data last updated September 8, 2026 and is based on user searches.
Discover last-minute flight deals from Boise to St. Louis. Data last updated September 8, 2026 and is based on user searches.
This CheapOair deal was found by Cheapflights users on 9/3. 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 CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/102:50 pm -
1 stop19h 27m
Sun 9/1312:27 pm -
1 stop26h 28m
Deal found 9/3![Frontier logo]()
$350
This Alaska Airlines deal was found by Cheapflights users on 9/3. 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 Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/242:16 pm -
1 stop8h 43m
Tue 9/296:29 am -
1 stop7h 06m
Deal found 9/3![Alaska Airlines logo]()
$369
This United Airlines deal was found by Cheapflights users on 9/3. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 9/255:30 pm -
1 stop5h 14m
Tue 9/297:08 am -
1 stop6h 50m
Deal found 9/3![United Airlines logo]()
$396
This CheapOair deal was found by Cheapflights users on 9/6. 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 CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/12:50 pm -
1 stop19h 27m
Sun 10/412:27 pm -
1 stop26h 28m
Deal found 9/6![Frontier logo]()
$332
This Delta deal was found by Cheapflights users on 9/6. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/227:13 pm -
2 stops12h 40m
Mon 10/262:22 pm -
2 stops8h 46m
Deal found 9/6![Delta logo]()
$343
This Delta deal was found by Cheapflights users on 9/6. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 10/276:45 am -
2 stops8h 58m
Wed 11/46:21 am -
2 stops11h 53m
Deal found 9/6![Delta logo]()
$394
This Southwest deal was found by Cheapflights users on 9/3. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/294:45 pm -
1 stop5h 40m
Sat 10/315:55 am -
1 stop5h 10m
Deal found 9/3![Southwest logo]()
$364
This Southwest deal was found by Cheapflights users on 9/3. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/304:45 pm -
1 stop5h 40m
Mon 11/28:50 am -
1 stop9h 10m
Deal found 9/3![Southwest logo]()
$391
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 September 8, 2026.
Search for one-way flight options from Boise to St. Louis. Find affordable one-way fares based on user searches. Data last updated September 8, 2026.
This CheapOair deal was found by Cheapflights users on 9/4. 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 CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/82:50 pm -
1 stop20h 45m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/4![Frontier logo]()
$160
This Kiwi.com deal was found by Cheapflights users on 9/4. 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.
Mon 10/262:50 pm -
2 stops47h 33m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/4![Frontier logo]()
$169
This CheapOair deal was found by Cheapflights users on 9/3. 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 CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/172:50 pm -
1 stop19h 37m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/3![Frontier logo]()
$176
This Delta deal was found by Cheapflights users on 9/7. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 10/126:49 pm -
1 stop4h 55m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/7![Delta logo]()
$185
This Southwest deal was found by Cheapflights users on 9/3. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 10/2612:45 pm -
2 stops9h 45m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/3![Southwest logo]()
$190
This Kiwi.com deal was found by Cheapflights users on 9/6. 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.
Thu 10/222:50 pm -
2 stops25h 50m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/6![Frontier logo]()
$194
This American Airlines deal was found by Cheapflights users on 9/4. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/212:41 pm -
1 stop8h 01m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/4![American Airlines logo]()
$209
This Southwest deal was found by Cheapflights users on 9/4. 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 10/211:25 pm -
2 stops9h 30m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/4![Southwest logo]()
$214
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 September 8, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $332 (CheapOair) |
One-way from | $160 (CheapOair) |
Popular in | May |
Cheapest in | April |
Average price | $444 |
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 7,457,451 searches. Data last updated September 8, 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 Boise Air Term. Gowen Fld - STL Lambert-St Louis
BOISTL
Boise Air Term. Gowen Fld
Thu 10/8
2:50 pm-12:35 pm
1 stop20h 45m
Lambert-St Louis
Wed 12/31
12:00 am-11:00 pm
Nonstop0h 00m
$160
BoiseSt. Louis
BOI Boise Air Term. Gowen Fld - STL Lambert-St Louis
BOISTL
Boise Air Term. Gowen Fld
Thu 9/17
2:50 pm-11:27 am
1 stop19h 37m
Lambert-St Louis
Wed 12/31
12:00 am-11:00 pm
Nonstop0h 00m
$176
BoiseSt. Louis
BOI Boise Air Term. Gowen Fld - STL Lambert-St Louis
BOISTL
Boise Air Term. Gowen Fld
Mon 10/26
3:24 pm-12:19 am
1 stop7h 55m
Lambert-St Louis
Wed 12/31
12:00 am-11:00 pm
Nonstop0h 00m
$185
Quickest round-trip
BoiseSt. Louis
BOI Boise Air Term. Gowen Fld - STL Lambert-St Louis
BOISTL
Boise Air Term. Gowen Fld
Mon 10/12
6:49 pm-12:44 am
1 stop4h 55m
Lambert-St Louis
Wed 12/31
12:00 am-11:00 pm
Nonstop0h 00m
$185
BoiseSt. Louis
BOI Boise Air Term. Gowen Fld - STL Lambert-St Louis
BOISTL
Boise Air Term. Gowen Fld
Mon 10/26
12:45 pm-11:30 pm
2 stops9h 45m
Lambert-St Louis
Wed 12/31
12:00 am-11:00 pm
Nonstop0h 00m
$190
BoiseSt. Louis
BOI Boise Air Term. Gowen Fld - STL Lambert-St Louis
BOISTL
Boise Air Term. Gowen Fld
Fri 10/9
4:45 pm-1:20 am
1 stop7h 35m
Lambert-St Louis
Wed 12/31
12:00 am-11:00 pm
Nonstop0h 00m
$221
BoiseSt. Louis
BOI Boise Air Term. Gowen Fld - STL Lambert-St Louis
BOISTL
Boise Air Term. Gowen Fld
Mon 10/26
4:37 pm-5:40 pm
3 stops48h 03m
Lambert-St Louis
Wed 12/31
12:00 am-11:00 pm
Nonstop0h 00m
$252
BoiseSt. Louis
BOI Boise Air Term. Gowen Fld - STL Lambert-St Louis
BOISTL
Boise Air Term. Gowen Fld
Mon 10/12
6:50 pm-9:50 am
2 stops14h 00m
Lambert-St Louis
Wed 12/31
12:00 am-11:00 pm
Nonstop0h 00m
$260
BoiseSt. Louis
BOI Boise Air Term. Gowen Fld - STL Lambert-St Louis
BOISTL
Boise Air Term. Gowen Fld
Mon 10/12
4:37 pm-5:40 pm
3 stops48h 03m
Lambert-St Louis
Wed 12/31
12:00 am-11:00 pm
Nonstop0h 00m
$266
BoiseSt. Louis
BOI Boise Air Term. Gowen Fld - STL Lambert-St Louis
BOISTL
Boise Air Term. Gowen Fld
Thu 10/8
1:32 pm-11:46 pm
2 stops9h 14m
Lambert-St Louis
Wed 12/31
12:00 am-11:00 pm
Nonstop0h 00m
$294
Showing 1-10 of 18 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 September.
| 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 September 8, 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.
Entertainment
7.5
Comfort
8.0
Food
7.0
Crew
8.6
Overall
8.0
Boarding
8.1
Reviews
1 / 20
4.0
OkaySteven,Sep 2026
OGG - HNL
Entertainment
7.5
Comfort
8.0
Food
7.0
Crew
8.6
Overall
8.0
Boarding
8.1
Reviews
1 / 20
4.0
OkaySteven,Sep 2026
OGG - HNL
Entertainment
7.5
Comfort
8.0
Food
7.0
Crew
8.6
Overall
8.0
Boarding
8.1
Reviews
1 / 20
4.0
OkaySteven,Sep 2026
OGG - HNL
Entertainment
7.5
Comfort
8.0
Food
7.0
Crew
8.6
Overall
8.0
Boarding
8.1
Reviews
1 / 20
4.0
OkaySteven,Sep 2026
OGG - HNL
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
Fairview Heights
O'Fallon
Fenton
Swansea
Eureka
Maryland Heights
Collinsville
Wentzville
Glencoe
Chesterfield
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Boise and St. Louis flights
Browse other Boise and St. Louis flight options. Last updated on September 8, 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 September 8, 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 September 8, 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 7,457,451 searches. Data last updated September 8, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$283 | Average$446 | FlexibilityNo cancel fee | On-time69% | |
| Cheapest$316 | Average$469 | FlexibilityNo cancel fee | On-timeN/A | |
| Cheapest$355 | Average$526 | FlexibilityNo cancel fee | On-time63% |