Which airports can I use when flying from Boise to St. Louis?

Flights from Boise to St. Louis usually depart from Boise Air Term. Gowen Fld (BOI) and arrive at Lambert-St Louis (STL).

What cabin classes can I book on flights from Boise to St. Louis?

Only Economy Class is available on flights from Boise to St. Louis.

Which airports do connecting flights from Boise to St. Louis pass through?

One-stop flights from Boise to St. Louis most commonly connect through: • Denver Intl (DEN) - 43% of one-stop connections • Salt Lake City (SLC) - 25% of one-stop connections • Phoenix Sky Harbor Intl (PHX) - 7% of one-stop connections • Seattle/Tacoma Intl (SEA) - 7% of one-stop connections

Can I save money by using flexible dates for flights from Boise to St. Louis?

Yes. Flexible dates can save you up to 39% on flights from Boise to St. Louis. Saturday is the cheapest departure day at $444 round-trip on average, while Sunday is the most expensive at $721, a difference of $277. Cheaper weekend fares like these are typical of routes dominated by weekday business travel.

What popular places can I visit in St. Louis?

Some of the most popular sights in St. Louis are Busch Stadium, Enterprise Center and America's Center Convention Complex. These are among the most viewed places in St. Louis on KAYAK.

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

A nonstop flight from Boise to St. Louis takes 00m, covering 1,378 miles.

Do I need a passport to fly from Boise to St. Louis?

No, a passport is not required for this domestic route, but you will need a real ID-compliant driver's license, a state ID or another TSA-accepted form of identification.

Have flight prices from Boise to St. Louis changed much recently?

Yes. Based on fares seen in the past 5 days, round-trip prices on this route showed a wide range, from about $308 to $1,523. That means the highest observed fare was about 5x higher than the lowest one.

How are flight prices from Boise to St. Louis looking right now?

One-way fares from Boise to St. Louis are currently lower than usual. Average one-way flight prices are about $209, which is 10% below the typical average for this route.

How much time can I save by choosing a different layover airport from Boise to St. Louis?

Flying via Denver Intl (DEN) gives the shortest average 1-stop total travel time at 5h 25m, compared with 5h 44m via Salt Lake City (SLC) and 5h 51m via Chicago Midway (MDW).

What is the time difference between Boise and St. Louis?

St. Louis is 1 hour ahead of Boise (Central Time vs Mountain Time). Plan for the time shift when scheduling connections or first-day activities.

What car rental options are available at Lambert-St Louis Airport (STL)?

Lambert-St Louis Airport (STL) hosts 5 major car rental companies, with daily rates averaging $78 for economy cars. Top options include: • Hertz • Budget • Alamo • Enterprise Rent-A-Car • Payless

How much should I expect to pay for a Boise to St. Louis flight?

Round-trip flights from Boise to St. Louis range from $425 to $592, with an average of $479 over the past 12 months. Anything below $425 counts as a good deal.

How much is a round-trip flight from Boise to St. Louis?

Round-trip flights from Boise to St. Louis typically range from $425 to $592. The lowest price found in the past 5 days was $308, on Frontier.

What's the cheapest day of the week to fly from Boise to St. Louis?

Based on deals KAYAK users found in the last 12 months, Saturday is the cheapest day of the week to fly from Boise to St. Louis. It’s 8% cheaper than the average day, while Sunday is the most expensive, with prices 50% higher.

Which airline is the cheapest to fly from Boise to St. Louis?

Frontier ($308) and Southwest ($314) are the cheapest airlines to fly round-trip from Boise to St. Louis according to KAYAK data over the last 5 days.

What’s the most popular layover airport when flying from Boise to St. Louis?

Denver Intl (DEN) is the most popular layover for the Boise to St. Louis route. 43% of KAYAK users who booked 1-stop round-trips over the past 3 months connected via DEN.

What is the cheapest layover airport when flying from Boise to St. Louis?

Flights via Chicago O'Hare Intl (ORD) offer the most affordable fares, with an average round-trip price of $372. Based on KAYAK data over the past 3 months.

When flying from Boise to St. Louis which airport offers the shortest layover?

Denver Intl (DEN) had the shortest average connection time for Boise to St. Louis layovers at 3h 12m over the past 3 months.

$131 CHEAP FLIGHTS from Boise to St. Louis (BOI - STL)

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Cheapest round-trip

$308

Typical prices: $425-$592

Frontier

Sun 11/25Sun 12/2

BOI - STL • 1 stop

Cheapest one-way

$131

Typical prices: $161-$288

Frontier

Sun 11/25

BOI - STL • 1 stop

Nonstop flights

Not available

There are currently no direct flights between Boise and St. Louis. You'll need to take a connecting flight to reach the destination.

Insights

When to travel

April

Cheapest • 14% price drop

June

Most popular

Good to know

Top layover airports

Chicago O'Hare Intl (ORD)

Cheapest • Avg $372 (round-trip)

Denver Intl (DEN)

Shortest trip • 5h 25m (one-way)

Insights

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KAYAK searches 100s of sites at once to find you the best travel deals.

We hope you love your trip to St. Louis!

Flight Deals

Cheap Flights from Boise to St. Louis (BOI-STL)

Discover the best prices for you by selecting your travel dates on KAYAK.

Round-trip

One-way

Recent round-trip flight deals from Boise to St. Louis

Wed, Nov 25 - Wed, Dec 2

7:55 pm - 4:20 pmBOI Boise Air Term. Gowen Fld-STL Lambert-St Louis

19h 25m1 stop Las Vegas Harry Reid Intl

7:58 pm - 7:01 pmSTL Lambert-St Louis-BOI Boise Air Term. Gowen Fld

24h 03m2 stops Denver Intl Las Vegas Harry Reid Intl

$308Frontier

Wed, Dec 2 - Wed, Dec 9

5:45 am - 12:30 pmBOI Boise Air Term. Gowen Fld-STL Lambert-St Louis

5h 45m1 stop Phoenix Sky Harbor Intl

6:30 am - 11:00 amSTL Lambert-St Louis-BOI Boise Air Term. Gowen Fld

5h 30m1 stop Denver Intl

$314Southwest

Mon, Nov 23 - Thu, Nov 26

2:03 pm - 11:49 pmBOI Boise Air Term. Gowen Fld-STL Lambert-St Louis

8h 46m1 stop Phoenix Sky Harbor Intl

7:58 am - 5:00 pmSTL Lambert-St Louis-BOI Boise Air Term. Gowen Fld

10h 02m1 stop Phoenix Sky Harbor Intl

$319American Airlines

Thu, Dec 3 - Mon, Dec 7

6:06 am - 1:36 pmBOI Boise Air Term. Gowen Fld-STL Lambert-St Louis

6h 30m1 stop Phoenix Sky Harbor Intl

6:02 am - 12:59 pmSTL Lambert-St Louis-BOI Boise Air Term. Gowen Fld

7h 57m1 stop Chicago O'Hare Intl

$319American Airlines

Tue, Dec 1 - Wed, Dec 2

3:45 pm - 11:10 pmBOI Boise Air Term. Gowen Fld-STL Lambert-St Louis

6h 25m1 stop Las Vegas Harry Reid Intl

6:30 am - 11:00 amSTL Lambert-St Louis-BOI Boise Air Term. Gowen Fld

5h 30m1 stop Denver Intl

$319Southwest

Thu, Nov 26 - Tue, Dec 1

8:49 am - 2:36 pmBOI Boise Air Term. Gowen Fld-STL Lambert-St Louis

4h 47m1 stop Salt Lake City

5:20 pm - 12:10 amSTL Lambert-St Louis-BOI Boise Air Term. Gowen Fld

7h 50m1 stop Minneapolis St Paul

$359Delta

Tue, Nov 24 - Tue, Dec 1

5:30 am - 12:21 pmBOI Boise Air Term. Gowen Fld-STL Lambert-St Louis

5h 51m1 stop Minneapolis St Paul

5:20 pm - 12:10 amSTL Lambert-St Louis-BOI Boise Air Term. Gowen Fld

7h 50m1 stop Minneapolis St Paul

$369Delta

Mon, Jan 11 - Thu, Jan 14

2:35 pm - 8:38 pmBOI Boise Air Term. Gowen Fld-STL Lambert-St Louis

5h 03m1 stop Denver Intl

8:30 am - 4:46 pmSTL Lambert-St Louis-BOI Boise Air Term. Gowen Fld

9h 16m1 stop San Francisco

$385United Airlines

Sun, Jan 24 - Wed, Jan 27

6:20 am - 2:03 pmBOI Boise Air Term. Gowen Fld-STL Lambert-St Louis

6h 43m1 stop Denver Intl

8:30 am - 2:52 pmSTL Lambert-St Louis-BOI Boise Air Term. Gowen Fld

7h 22m1 stop San Francisco

$406United Airlines

Tue, Nov 10 - Wed, Nov 11

6:37 am - 2:25 pmBOI Boise Air Term. Gowen Fld-STL Lambert-St Louis

6h 48m1 stop Seattle/Tacoma Intl

6:00 am - 12:25 pmSTL Lambert-St Louis-BOI Boise Air Term. Gowen Fld

7h 25m1 stop Seattle/Tacoma Intl

$529Alaska Airlines

Booking Insights

Price, demand and travel trends for Boise to St. Louis flights

Use KAYAK data on prices, travel dates, airlines and seasonal trends to compare options and book flights with more confidence.

Prices

Airlines

Layovers

How much is a round-trip flight from Boise to St. Louis? This analysis is based on the cheapest round-trip price found on KAYAK in the last 12 months by searching for a flight from Boise to St. Louis departing in november.
What's the cheapest day of the week to fly from Boise to St. Louis?: Based on deals KAYAK users found in the last 12 months, Saturday is the cheapest day of the week to fly from Boise to St. Louis. It’s 8% cheaper than the average day, while Sunday is the most expensive, with prices 50% higher.

Find deals

Low season	February
High season	June
Cheapest flight	$131

Beat the crowds with an average 72% drop in travelers.

The most popular month to fly with an average 90% increase in travelers.

One-way flight from Boise to St. Louis

When to book flights from Boise to St. Louis

Are your dates flexible? Find out the best times to travel from Boise to St. Louis based on our flight data from the last year. Discover the cheapest month and even day to fly.

Estimated round-trip price

KAYAK looks at all historical flight data for each date to provide a predicted price for one-way trips or round-trips with a duration up to 40 days. While we try to provide actual minimum prices for each date, some prices are predictions and actual prices may differ.

What cabin classes can I book on flights from Boise to St. Louis?
Only Economy Class is available on flights from Boise to St. Louis.
How long is a flight from Boise to St. Louis?
A nonstop flight from Boise to St. Louis takes 00m, covering 1,378 miles.
Do I need a passport to fly from Boise to St. Louis?
No, a passport is not required for this domestic route, but you will need a real ID-compliant driver's license, a state ID or another TSA-accepted form of identification.
How much should I expect to pay for a Boise to St. Louis flight?
Round-trip flights from Boise to St. Louis range from $425 to $592, with an average of $479 over the past 12 months. Anything below $425 counts as a good deal.
Have flight prices from Boise to St. Louis changed much recently?
Yes. Based on fares seen in the past 5 days, round-trip prices on this route showed a wide range, from about $308 to $1,523. That means the highest observed fare was about 5x higher than the lowest one.
How are flight prices from Boise to St. Louis looking right now?
One-way fares from Boise to St. Louis are currently lower than usual. Average one-way flight prices are about $209, which is 10% below the typical average for this route.
What car rental options are available at Lambert-St Louis Airport (STL)?
Lambert-St Louis Airport (STL) hosts 5 major car rental companies, with daily rates averaging $78 for economy cars. Top options include:

• Hertz
• Budget
• Alamo
• Enterprise Rent-A-Car
• Payless
Which airports can I use when flying from Boise to St. Louis?
Flights from Boise to St. Louis usually depart from Boise Air Term. Gowen Fld (BOI) and arrive at Lambert-St Louis (STL).
Which airports do connecting flights from Boise to St. Louis pass through?
One-stop flights from Boise to St. Louis most commonly connect through:

• Denver Intl (DEN) - 43% of one-stop connections
• Salt Lake City (SLC) - 25% of one-stop connections
• Phoenix Sky Harbor Intl (PHX) - 7% of one-stop connections
• Seattle/Tacoma Intl (SEA) - 7% of one-stop connections
Can I save money by using flexible dates for flights from Boise to St. Louis?
Yes. Flexible dates can save you up to 39% on flights from Boise to St. Louis. Saturday is the cheapest departure day at $444 round-trip on average, while Sunday is the most expensive at $721, a difference of $277.

Cheaper weekend fares like these are typical of routes dominated by weekday business travel.
How much time can I save by choosing a different layover airport from Boise to St. Louis?
Flying via Denver Intl (DEN) gives the shortest average 1-stop total travel time at 5h 25m, compared with 5h 44m via Salt Lake City (SLC) and 5h 51m via Chicago Midway (MDW).
What is the time difference between Boise and St. Louis?
St. Louis is 1 hour ahead of Boise (Central Time vs Mountain Time). Plan for the time shift when scheduling connections or first-day activities.
What popular places can I visit in St. Louis?
Some of the most popular sights in St. Louis are Busch Stadium, Enterprise Center and America's Center Convention Complex. These are among the most viewed places in St. Louis on KAYAK.

If your dates are flexible, aim for a Saturday departure and avoid flying on Sunday. On this route, Saturday flights average $444, about $277 less than Sunday fares (38% savings) based on the last 12 months.
If you can choose when to travel, plan your Boise to St. Louis trip for April. Fares historically average $413 round-trip in that month - typically $563 less than the most expensive month, which is October (based on the last 12 months).
If you're arriving late at night and need somewhere to stay, check out these hotels close to Lambert-St Louis Airport.

• Renaissance St. Louis Airport Hotel
• Drury Inn & Suites St. Louis Airport
• DoubleTree by Hilton St. Louis Airport

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BOI - STL

$131 Find Cheap Flights from Boise to St. Louis - Compare and Save

Everything you should know

Cheap Flights from Boise to St. Louis (BOI-STL)

Recent round-trip flight deals from Boise to St. Louis

Recent one-way flight deals from Boise to St. Louis

Price, demand and travel trends for Boise to St. Louis flights

How much is a round-trip flight from Boise to St. Louis?

What's the cheapest day of the week to fly from Boise to St. Louis?

Which airline is the cheapest to fly from Boise to St. Louis?

What’s the most popular layover airport when flying from Boise to St. Louis?

What is the cheapest layover airport when flying from Boise to St. Louis?

When flying from Boise to St. Louis which airport offers the shortest layover?

Key details for Boise to St. Louis flights

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Cheapest flight

When to book flights from Boise to St. Louis

Your Boise to St. Louis flight questions, answered

Your guide to booking Boise to St. Louis flights

More options for your flight from Boise to St. Louis

Complete your trip to St. Louis with a hotel stay or car rental

Information on your arrival and departure airports

Cabin class types available on flights from Boise to St. Louis

Find direct flights to and from Boise and St. Louis

Flights from domestic origins to St. Louis

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