Which airport typically offers the quickest layover for flights from St. Louis to Boise?

Flights via Denver (DEN) offer the fastest connection on this route, with an average layover time of 1h 10m.

What’s the top layover airport for flights from St. Louis to Boise?

Denver (DEN) – chosen by Cheapflights users on 75% of 1-stop itineraries from St. Louis to Boise on Cheapflights.

What’s the fastest layover option from St. Louis to Boise?

Flights via Denver (DEN) have the shortest average one-way travel time for 1-stop routes: 5h 05m.

What’s the cheapest layover airport for flights from St. Louis to Boise?

Seattle (SEA) is the most affordable 1-stop option, with an average round-trip price of $395.

How long is the flight from St. Louis to Boise?

For as low as $292, Delta can have you in Boise from St. Louis in 6h 59m. The distance from St. Louis to Boise is about 1378 mi. Both multi-stop and nonstop flights can be found to your destination and back.

What are the cheapest airlines flying from St. Louis to Boise round-trip?

According to our current data, American Airlines ($186), Delta ($286), and Southwest ($292) offers the cheapest pricing from St. Louis to Boise. American Airlines is priced at 54% lower than the current average price of a flight leaving 3 months from now.

In terms of precipitation, rainfall in Boise ranges from 0.2 - 1.6 inches per month. December is typically the wettest month, when rainfall can reach 1.6 in. August is typically the driest time to visit Boise when rainfall is around 0.2 in.

If weather is an important factor for your trip to Boise, use this chart to help with planning. For those seeking warmer temperatures, July is the ideal time of year to visit, when temperatures reach an average of 75.2 F. Travelers looking to avoid the cold should look outside of December, when temperatures are typically at their lowest (around 30.2 F).

What are the most popular airlines that fly from St. Louis to Boise?

Before booking your flight from St. Louis to Boise check out the most popular airlines for this route: Delta, Southwest or United Airlines.

Most accurate provider : When it comes to deals on St. Louis-Boise flights, users find the pricing of FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on St. Louis-Boise flight deals on Cheapflights vs. FlightHub >95% of the time. Price accuracy is based on data collected from St. Louis-Boise flight searches over the past month and is updated monthly.

Most trusted provider : When it comes to deals on St. Louis-Boise 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 St. Louis-Boise flight deals. Provider user feedback score is based on Cheapflights searches over the past month and is updated monthly.

Can I find deals for flights from St. Louis to Boise that include hotel bookings?

Yes. In addition to deals on St. Louis to Boise flights, Cheapflights offers vacation packages that include both flights and hotel.

How can I find direct flights from St. Louis to Boise?

After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from St. Louis to Boise.

Can I find deals for business class flights from St. Louis to Boise?

Yes. Cheapflights offers flight deals from St. Louis to Boise by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

$103+ Flights from St. Louis to Boise

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1. Tell us where you want to go

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Cheapflights Tip: The best prices from Lambert-St Louis to Boise Air Term. Gowen Fld are usually found in April or November, booked 75 days in advance, depart on a Wednesday or Monday and return on a Tuesday

Cheap flight deals from St. Louis to Boise

Most accurate provider	FlightHub 3 stars
Most trusted provider	FlightHub 3 stars
Round-trip from	$287 (Delta)
One-way from	$103 (Kiwi.com)
Popular in	December
Cheapest in	April
Average price	$414

Provider with most accurate pricing for Lambert-St Louis-Boise Air Term. Gowen Fld flight deals.

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Provider most trusted by Cheapflights users for Lambert-St Louis-Boise Air Term. Gowen Fld flights.

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From Lambert-St Louis to Boise Air Term. Gowen Fld

Search Deals

One-way flight from Lambert-St Louis to Boise Air Term. Gowen Fld

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High demand for flights, 0% potential price rise

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Cheapest flight prices on average. 1% potential price decrease ($5 potential savings vs. average RT price).

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Average for round-trip flights in October 2025

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Find flight deals from St. Louis to Boise

Cheapest flights from St. Louis to Boise
Explore the most affordable flight options available from St. Louis to Boise. Find the lowest fares from popular airlines and budget airlines, with prices last updated on October 16, 2025.

Thu 11/66:00 amSTL - BOI

2 stops11h 06mDelta

Mon 11/107:45 pmBOI - STL

2 stops12h 10mDelta

Deal found 10/15

$287

Tue 11/115:29 pmSTL - BOI

1 stop6h 59mUnited Airlines

Wed 11/128:25 amBOI - STL

1 stop7h 03mUnited Airlines

Deal found 10/16

$292

Tue 11/116:34 amSTL - BOI

1 stop6h 26mDelta

Wed 11/121:50 pmBOI - STL

2 stops9h 56mDelta

Deal found 10/16

$296

Thu 11/67:00 amSTL - BOI

1 stop6h 35mAmerican Airlines

Mon 11/101:25 pmBOI - STL

1 stop8h 33mAmerican Airlines

Deal found 10/16

$327

Tue 12/1612:49 pmSTL - BOI

2 stops8h 31mDelta

Tue 12/303:23 pmBOI - STL

1 stop5h 53mDelta

Deal found 10/15

$331

Thu 11/67:00 amSTL - BOI

1 stop9h 12mAlaska Airlines

Mon 11/102:20 pmBOI - STL

1 stop8h 39mAlaska Airlines

Deal found 10/15

$342

Best flights from St. Louis to Boise
Discover carefully curated flight deals from St. Louis to Boise that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated October 16, 2025.

Thu 11/66:00 amSTL - BOI

2 stops11h 06mDelta

Mon 11/107:45 pmBOI - STL

2 stops12h 10mDelta

Deal found 10/15

$287

Tue 11/115:29 pmSTL - BOI

1 stop6h 59mUnited Airlines

Wed 11/128:25 amBOI - STL

1 stop7h 03mUnited Airlines

Deal found 10/16

$292

Thu 11/67:00 amSTL - BOI

1 stop9h 12mAlaska Airlines

Mon 11/102:20 pmBOI - STL

1 stop8h 39mAlaska Airlines

Deal found 10/15

$342

Tue 11/116:34 amSTL - BOI

1 stop6h 26mDelta

Wed 11/121:50 pmBOI - STL

2 stops9h 56mDelta

Deal found 10/16

$296

Tue 12/1612:49 pmSTL - BOI

2 stops8h 31mDelta

Tue 12/303:23 pmBOI - STL

1 stop5h 53mDelta

Deal found 10/15

$331

Last-minute flights from St. Louis to Boise
Discover last-minute flight deals from St. Louis to Boise. Data last updated October 16, 2025 and is based on user searches.

Tue 10/286:50 amSTL - BOI

1 stop6h 11mDelta

Fri 10/313:00 pmBOI - STL

1 stop7h 06mDelta

Deal found 10/14

$400

Fri 10/315:24 pmSTL - BOI

1 stop6h 21mUnited Airlines

Tue 11/46:20 amBOI - STL

2 stops9h 08mUnited Airlines

Deal found 10/16

$405

Thu 11/66:00 amSTL - BOI

2 stops11h 06mDelta

Mon 11/107:45 pmBOI - STL

2 stops12h 10mDelta

Deal found 10/15

$287

Thu 11/67:00 amSTL - BOI

1 stop6h 35mAmerican Airlines

Mon 11/101:25 pmBOI - STL

1 stop8h 33mAmerican Airlines

Deal found 10/16

$327

Thu 11/67:00 amSTL - BOI

1 stop9h 12mAlaska Airlines

Mon 11/102:20 pmBOI - STL

1 stop8h 39mAlaska Airlines

Deal found 10/15

$342

Tue 11/115:29 pmSTL - BOI

1 stop6h 59mUnited Airlines

Wed 11/128:25 amBOI - STL

1 stop7h 03mUnited Airlines

Deal found 10/16

$292

Tue 11/116:34 amSTL - BOI

1 stop6h 26mDelta

Wed 11/121:50 pmBOI - STL

2 stops9h 56mDelta

Deal found 10/16

$296

One-way flights from St. Louis to Boise
Search for one-way flight options from St. Louis to Boise. Find affordable one-way fares based on user searches. Data last updated October 16, 2025.

Wed 10/298:40 pmSTL - BOI

1 stop16h 08mFrontier

Deal found 10/15

$103

Thu 10/306:22 pmSTL - BOI

3 stops27h 47mMultiple Airlines

Deal found 10/15

$204

Wed 10/298:40 pmSTL - BOI

3 stops43h 39mMultiple Airlines

Deal found 10/15

$245

Tue 10/288:40 pmSTL - BOI

2 stops41h 36mMultiple Airlines

Deal found 10/14

$255

Tue 10/287:00 amSTL - BOI

1 stop6h 45mAmerican Airlines

Deal found 10/14

$264

Wed 10/2911:05 amSTL - BOI

2 stops11h 16mUnited Airlines

Deal found 10/15

$269

Mon 11/31:35 pmSTL - BOI

2 stops10h 53mUnited Airlines

Deal found 10/15

$298

Mon 11/32:42 pmSTL - BOI

3 stops20h 47mMultiple Airlines

Deal found 10/15

$502

Fly from

Fly to

Route

Depart

Return

Price

St. LouisBoise

STL - BOI

STLBOI

Lambert-St Louis

Thu 11/6

6:00 am-4:06 pm

2 stops11h 06m

Boise Air Term. Gowen Fld

Mon 11/10

7:45 pm-8:55 am

2 stops12h 10m

$287

St. LouisBoise

STL - BOI

STLBOI

Lambert-St Louis

Tue 11/11

5:29 pm-11:28 pm

1 stop6h 59m

Boise Air Term. Gowen Fld

Wed 11/12

8:25 am-4:28 pm

1 stop7h 03m

$292

St. LouisBoise

STL - BOI

STLBOI

Lambert-St Louis

Tue 11/11

6:34 am-12:00 pm

1 stop6h 26m

Boise Air Term. Gowen Fld

Wed 11/12

1:50 pm-12:46 am

2 stops9h 56m

$296

St. LouisBoise

STL - BOI

STLBOI

Lambert-St Louis

Tue 12/16

12:49 pm-8:20 pm

2 stops8h 31m

Boise Air Term. Gowen Fld

Tue 12/30

3:23 pm-10:16 pm

1 stop5h 53m

$331

St. LouisBoise

STL - BOI

STLBOI

Lambert-St Louis

Thu 11/6

7:00 am-3:12 pm

1 stop9h 12m

Boise Air Term. Gowen Fld

Mon 11/10

2:20 pm-11:59 pm

1 stop8h 39m

$342

St. LouisBoise

STL - BOI

STLBOI

Lambert-St Louis

Wed 10/29

8:40 pm-11:48 am

1 stop16h 08m

$103

St. LouisBoise

STL - BOI

STLBOI

Lambert-St Louis

Thu 10/30

6:22 pm-9:09 pm

3 stops27h 47m

$204

St. LouisBoise

STL - BOI

STLBOI

Lambert-St Louis

Tue 10/28

8:40 pm-1:16 pm

2 stops41h 36m

$255

St. LouisBoise

STL - BOI

STLBOI

Lambert-St Louis

Tue 10/28

7:00 am-12:45 pm

1 stop6h 45m

$264

St. LouisBoise

STL - BOI

STLBOI

Lambert-St Louis

Mon 11/3

7:33 am-1:46 pm

1 stop7h 13m

$264

Flights are sorted by cheapest round-trip flights first.

Deals found on 10/15

Showing 1-10 of 14 results

Compare providers for flights from St. Louis to Boise

Use the table below to compare price accuracy, trust ratings, and cancellation policies for each provider offering flight deals from St. Louis to Boise in October.

Provider	Price Accuracy	Trust Score*
Expedia	Price Accuracy2 stars	Trust Score*3 stars
FlightHub	Price Accuracy3 stars	Trust Score*3 stars
eDreams	Price Accuracy3 stars	Trust Score*3 stars
Cheapfaremart	Price Accuracy-	Trust Score*1 star

*The Trust Score is based on feedback from users after their booking experience. It measures overall satisfaction, helping us identify issues like hidden fees, problems during the ticketing process, and the quality of customer service. This score is our best indicator of the provider's quality and reliability.

Most accurate provider: When it comes to deals on St. Louis-Boise flights, users find the pricing of FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on St. Louis-Boise flight deals on Cheapflights vs. FlightHub >95% of the time. Price accuracy is based on data collected from St. Louis-Boise flight searches over the past month and is updated monthly.
Most trusted provider: When it comes to deals on St. Louis-Boise 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 St. Louis-Boise 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 St. Louis to Boise

Have a flexible travel schedule? Discover the best time to fly to Boise from St. Louis with our price prediction graph.

Estimated round-trip price

Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.

Cheapflights Insights

Everything you need to know about your flight from St. Louis to Boise

Prices

How far ahead should I book a flight from St. Louis to Boise?

The price you pay for your flight from St. Louis to Boise may vary depending on when you book. For the best chance of a lower fare, look to book 75 days in advance of your trip. Fares are likely to increase a fortnight or so before your departure date.

What is the cheapest month to book a flight from St. Louis to Boise?

Currently, September is the cheapest month in which you can book a flight from St. Louis to Boise (average of $186). Flying from St. Louis to Boise in March is currently the most expensive (average of $313). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

What is the cheapest time of day to fly from STL to BOI?

When flying from St. Louis to Boise, the time of day you fly usually plays a role in the price. Save by searching for a flight at noon, which can drop the price by up to 22% versus a flight in the evening.

Reviews of airlines servicing Boise

Read reviews from past customers who have flown Southwest, Delta, and United Airlines from St. Louis to Boise. 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.

Southwest

8.0

Very good

4,241 reviews

Reviews

1 / 20

2.0

Mediocre

Mike,Aug 2025

OKC - AUS

AC was not adequate, even on a night flight. WiFi subpar even for the airlines

Southwest

8.0

Very good

4,241 reviews

Southwest

8.0

Very good

4,241 reviews

Reviews

1 / 20

2.0

Mediocre

Mike,Aug 2025

OKC - AUS

AC was not adequate, even on a night flight. WiFi subpar even for the airlines

Delta

8.0

Very good

7,984 reviews

Southwest

8.0

Very good

4,241 reviews

Reviews

1 / 20

2.0

Mediocre

Mike,Aug 2025

OKC - AUS

AC was not adequate, even on a night flight. WiFi subpar even for the airlines

United Airlines

7.4

Good

8,982 reviews

Southwest

8.0

Very good

4,241 reviews

Reviews

1 / 20

2.0

Mediocre

Mike,Aug 2025

OKC - AUS

AC was not adequate, even on a night flight. WiFi subpar even for the airlines

American Airlines

7.2

Good

11,043 reviews

Southwest

8.0

Very good

4,241 reviews

Reviews

1 / 20

2.0

Mediocre

Mike,Aug 2025

OKC - AUS

AC was not adequate, even on a night flight. WiFi subpar even for the airlines

Related info for your journey

How long is the flight from St. Louis to Boise?
For as low as $292, Delta can have you in Boise from St. Louis in 6h 59m. The distance from St. Louis to Boise is about 1378 mi. Both multi-stop and nonstop flights can be found to your destination and back.
What are the cheapest airlines flying from St. Louis to Boise round-trip?
According to our current data, American Airlines ($186), Delta ($286), and Southwest ($292) offers the cheapest pricing from St. Louis to Boise. American Airlines is priced at 54% lower than the current average price of a flight leaving 3 months from now.
Can I find deals for flights from St. Louis to Boise that include hotel bookings?
Yes. In addition to deals on St. Louis to Boise flights, Cheapflights offers vacation packages that include both flights and hotel.
How can I find direct flights from St. Louis to Boise?
After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from St. Louis to Boise.
Can I find deals for business class flights from St. Louis to Boise?
Yes. Cheapflights offers flight deals from St. Louis to Boise by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.
What is the cheapest month to book a flight from St. Louis to Boise?
Currently, September is the cheapest month in which you can book a flight from St. Louis to Boise (average of $186). Flying from St. Louis to Boise in March is currently the most expensive (average of $313). 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.

See more FAQs

Ontario

Meridian

Nampa

Caldwell

McCall

Browse thousands of different options on Cheapflights for your next trip

Alternative routes for St. Louis to Boise

Other flights to Boise

Top 4 airlines flying from St. Louis to Boise

Airline	Cheapest	Average	Flexibility	On-time
American Airlines	Cheapest$186	Average$366	FlexibilityNo cancel fee	On-time71%
Delta	Cheapest$286	Average$389	FlexibilityNo cancel fee	On-timeN/A
Southwest	Cheapest$292	Average$439	FlexibilityNo cancel fee	On-time63%
United Airlines	Cheapest$300	Average$466	FlexibilityNo cancel fee	On-time69%

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$103+ Cheap flights from St. Louis to Boise (STL - BOI)

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 10/29. Fares are subject to change and may not be available on all flights or dates of travel.

Find cheap flights from St. Louis to Boise with Cheapflights

1. Tell us where you want to go

2. Select your favorite providers

3. Compare prices and book

Cheapflights Tip: The best prices from Lambert-St Louis to Boise Air Term. Gowen Fld are usually found in April or November, booked 75 days in advance, depart on a Wednesday or Monday and return on a Tuesday

Cheap flight deals from St. Louis to Boise

Most accurate provider

Most trusted provider

Round-trip from

One-way from

Popular in

Cheapest in

Average price

Find flight deals from St. Louis to Boise

Cheapest flights from St. Louis to BoiseExplore the most affordable flight options available from St. Louis to Boise. Find the lowest fares from popular airlines and budget airlines, with prices last updated on October 16, 2025.

Explore the most affordable flight options available from St. Louis to Boise. Find the lowest fares from popular airlines and budget airlines, with prices last updated on October 16, 2025.

Cheapflights Fare Finder

Use the filters below to find and compare flights from St. Louis to Boise that are best for you.

Compare providers for flights from St. Louis to Boise

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 St. Louis to Boise in October.

Best time to book a flight from St. Louis to Boise

Have a flexible travel schedule? Discover the best time to fly to Boise from St. Louis with our price prediction graph.

Cheapflights Insights

Everything you need to know about your flight from St. Louis to Boise

How far ahead should I book a flight from St. Louis to Boise?

What is the cheapest month to book a flight from St. Louis to Boise?

What is the cheapest time of day to fly from STL to BOI?

What’s the top layover airport for flights from St. Louis to Boise?

What’s the fastest layover option from St. Louis to Boise?

What’s the fastest layover option from St. Louis to Boise?

Which airport typically offers the quickest layover for flights from St. Louis to Boise?

Reviews of airlines servicing Boise

Read reviews from past customers who have flown Southwest, Delta, and United Airlines from St. Louis to Boise. 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.

Related info for your journey

Find useful and relevant information for your journey from St. Louis to Boise. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

How long is the flight from St. Louis to Boise?

What are the cheapest airlines flying from St. Louis to Boise round-trip?

Can I find deals for flights from St. Louis to Boise that include hotel bookings?

How can I find direct flights from St. Louis to Boise?

Can I find deals for business class flights from St. Louis to Boise?

What is the cheapest month to book a flight from St. Louis to Boise?

Traveling to a place near Boise?

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Alternative routes for St. Louis to Boise

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Top 4 airlines flying from St. Louis to Boise

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Cheapest flights from St. Louis to Boise
Explore the most affordable flight options available from St. Louis to Boise. Find the lowest fares from popular airlines and budget airlines, with prices last updated on October 16, 2025.