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

Know your dates, get live prices in seconds:

From
To
Depart
Return
Any month
Compare vs. Cheapflights |
From
To
Depart
Depart
Time
Anytime
From
To
Depart
Depart
Time
Anytime
From
To
Depart
Depart
Time
Anytime
From
To
Depart
Depart
Time
Anytime
From
To
Depart
Depart
Time
Anytime
From
To
Depart
Depart
Time
Anytime

We work with more than 300 partners to bring you better travel deals

The best prices from Lambert-St Louis to Boise Air Term. Gowen Fld are usually found in October or September, booked 38 days in advance, depart on a Wednesday or Thursday and return on a Tuesday

How to find the cheapest flight from
St. Louis (STL) to Boise (BOI)

All the information you need to plan the best STL to BOI flight in 2022: compare St. Louis to Boise flight prices with the expected peak season, weather and rainfall in Boise.
STL - BOI
Price
$255 - $885
BOI
Temperature
30.2 - 75.2 °F
BOI
Rainfall
0.2 - 1.6 inches

Popular in

June

High demand for flights, 49% potential price rise

Cheapest in

October

Best time to find cheap flights, 44% potential price drop

Round-trip from

$255

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

One-way from

$197

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

Flight route prices based on searches on Cheapflights within the last 3 days, monthly prices based on aggregated historical data.
When is the cheapest time to fly from St. Louis to Boise (STL - 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 in the evening, which can drop the price by up to 30% versus a flight at noon.

What is the cheapest month to fly from St. Louis to Boise?

Flights from St. Louis to Boise lean towards being more expensive in June. Prices are generally better when you fly from St. Louis to Boise in October, with the cheapest ticket starting at $254.

What is the cheapest day to fly round-trip from St. Louis to Boise?

Users have found that flying from St. Louis to Boise on a Saturday typically leans towards higher prices. However, this doesn’t mean you still can’t find a deal. Flexibility with other aspects of your flight can still land a great price for your trip.

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

Find a great deal and save up to 42% by booking at least 39 days prior to your desired departure date, rather than waiting until the week of travel. According to our data, there are a number of flights available from St. Louis to Boise within the next two weeks, with the cheapest ticket starting at $540.

Cheap flights from St. Louis to Boise in August, September 2022

The best prices found for STL to BOI flights for August, September
28 Aug - 30 Aug
$159pp
STL
Lambert-St Louis
Multiple Airlines
 
1 STOP
BOI
Boise Air Term. Gowen Fld
BOI
Boise Air Term. Gowen Fld
Multiple Airlines
 
1 STOP
STL
Lambert-St Louis
28 Aug - 30 Aug
$170pp
STL
Lambert-St Louis
Multiple Airlines
 
1 STOP
BOI
Boise Air Term. Gowen Fld
BOI
Boise Air Term. Gowen Fld
Multiple Airlines
 
1 STOP
STL
Lambert-St Louis
14 Aug - 17 Aug
$191pp
STL
Lambert-St Louis
Multiple Airlines
 
1 STOP
BOI
Boise Air Term. Gowen Fld
BOI
Boise Air Term. Gowen Fld
Spirit Airlines
 
1 STOP
STL
Lambert-St Louis

Lambert-St Louis to Boise 2022 flight deals

Cheap flights to Boise from St. Louis found for this year
28 Aug - 30 Aug
$159pp
STL
Lambert-St Louis
Multiple Airlines
 
1 STOP
BOI
Boise Air Term. Gowen Fld
BOI
Boise Air Term. Gowen Fld
Multiple Airlines
 
1 STOP
STL
Lambert-St Louis
28 Aug - 30 Aug
$170pp
STL
Lambert-St Louis
Multiple Airlines
 
1 STOP
BOI
Boise Air Term. Gowen Fld
BOI
Boise Air Term. Gowen Fld
Multiple Airlines
 
1 STOP
STL
Lambert-St Louis
14 Aug - 17 Aug
$191pp
STL
Lambert-St Louis
Multiple Airlines
 
1 STOP
BOI
Boise Air Term. Gowen Fld
BOI
Boise Air Term. Gowen Fld
Spirit Airlines
 
1 STOP
STL
Lambert-St Louis

Cheap Spirit Airlines flights from St. Louis to Boise

28 Aug - 2 Sep
$203pp
STL
Lambert-St Louis
Spirit Airlines
 
1 STOP
BOI
Boise Air Term. Gowen Fld
BOI
Boise Air Term. Gowen Fld
Spirit Airlines
 
1 STOP
STL
Lambert-St Louis
27 Sep - 4 Oct
$223pp
STL
Lambert-St Louis
Spirit Airlines
 
1 STOP
BOI
Boise Air Term. Gowen Fld
BOI
Boise Air Term. Gowen Fld
Spirit Airlines
 
1 STOP
STL
Lambert-St Louis
29 Aug - 31 Aug
$234pp
STL
Lambert-St Louis
Spirit Airlines
 
1 STOP
BOI
Boise Air Term. Gowen Fld
BOI
Boise Air Term. Gowen Fld
Spirit Airlines
 
1 STOP
STL
Lambert-St Louis

Cheap American Airlines flights from St. Louis to Boise

12 Aug - 16 Aug
$527pp
STL
Lambert-St Louis
American Airlines
   
2 STOPS
BOI
Boise Air Term. Gowen Fld
BOI
Boise Air Term. Gowen Fld
American Airlines
   
2 STOPS
STL
Lambert-St Louis
14 Aug - 17 Aug
$640pp
STL
Lambert-St Louis
American Airlines
   
2 STOPS
BOI
Boise Air Term. Gowen Fld
BOI
Boise Air Term. Gowen Fld
American Airlines
   
2 STOPS
STL
Lambert-St Louis
11 Aug - 14 Aug
$1,346pp
STL
Lambert-St Louis
American Airlines
   
2 STOPS
BOI
Boise Air Term. Gowen Fld
BOI
Boise Air Term. Gowen Fld
American Airlines
   
2 STOPS
STL
Lambert-St Louis

Last minute flights from St. Louis to Boise

Late deals on round-trip flights to Boise from St. Louis, departing today and this week
14 Aug - 17 Aug
$191pp
STL
Lambert-St Louis
Multiple Airlines
 
1 STOP
BOI
Boise Air Term. Gowen Fld
BOI
Boise Air Term. Gowen Fld
Spirit Airlines
 
1 STOP
STL
Lambert-St Louis
12 Aug - 16 Aug
$219pp
STL
Lambert-St Louis
Multiple Airlines
 
1 STOP
BOI
Boise Air Term. Gowen Fld
BOI
Boise Air Term. Gowen Fld
Multiple Airlines
 
1 STOP
STL
Lambert-St Louis
14 Aug - 17 Aug
$257pp
STL
Lambert-St Louis
Multiple Airlines
 
1 STOP
BOI
Boise Air Term. Gowen Fld
BOI
Boise Air Term. Gowen Fld
Spirit Airlines
 
1 STOP
STL
Lambert-St Louis

One-way flights to Air Term. Gowen Fld from St. Louis

The cheapest one-way flights from St. Louis to Boise
8:50 am - 10:58 am
Spirit Airlines
2 Stops
27h 08m
STL - BOI
Spirit Airlines
$197
Gotogate
2:23 am - 6:05 pm
United Airlines
3 Stops
16h 42m
STL - BOI
United Airlines
$278
United
2:20 am - 6:55 am
Delta
1 Stop
5h 35m
STL - BOI
Delta
$575
Delta

Related info for your journey

Useful info, stats and facts about <span class="emphasized">St. Louis</span> to <span class="emphasized">Boise</span> flights.

Flight FAQs

From St. Louis to Boise

Which airlines flying from Lambert-St Louis to Boise Air Term. Gowen Fld have flexible cancellations due to COVID-19?

Delta, United Airlines, and American Airlines are some of the carriers that may have flexible cancellation policies. You can use our site to filter for other airlines that may also have this kind of flexibility.

Can I find flights from St. Louis to Boise for under $200 on Cheapflights?

Yes, there are multiple flights from St. Louis to Boise for under $200. The cheapest flight booked recently is on Multiple Airlines for just $159, but on average you can expect to pay $241.

Are there last-minute flights available from St. Louis to Boise for under $200?

There are currently 13+ open flights from St. Louis to Boise within the next 7 days for less than $200.

How popular is this St. Louis to Boise flight route?

The Lambert-St Louis to Boise Air Term. Gowen Fld flight path was viewed by 18 users in the past month. Keep an eye out for changes in search interest prior to high and low season.

What is the cheapest airline to fly from St. Louis to Boise round-trip?

According to our current data, Spirit Airlines ($203), offers the cheapest pricing from St. Louis to Boise. Spirit Airlines is priced at 55% lower than the current average price of a flight leaving 3 months from now.

What are the cheapest airlines to fly from St. Louis to Boise one-way?

To fly one-way, consider booking your trip with Delta, which is currently one of the cheapest options available, starting at $177. Spirit Airlines flights start at $197 while deals on United Airlines start at $278 one-way.

What are the cheapest flights from St. Louis to Boise?

Looking for the cheapest flight from St. Louis to Boise? While on average our users pay $805, our data indicates the cheapest price to be $218. The most popular route (Lambert-St Louis - Boise Air Term. Gowen Fld), is priced around $190.

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: American Airlines, Alaska Airlines or Delta.

COVID Restrictions

View COVID Travel Restrictions for Boise, ID

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

Information is based on travel restrictions for travel to Boise Air Term. Gowen Fld within the United States

Most visitors from Lambert-St Louis need to provide a negative COVID-19 test result and/or quarantine to enter Boise Air Term. Gowen Fld.

COVID-19 testing requirements
Visitors from Lambert-St Louis are not required to present a negative COVID-19 PCR test or antigen result upon entering Boise Air Term. Gowen Fld.

Quarantine requirements
Visitors from Lambert-St Louis are not required to quarantine after entering Boise Air Term. Gowen Fld.

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

Returning to Lambert-St Louis from Boise Air Term. Gowen Fld

COVID-19 testing requirements
Visitors from Boise Air Term. Gowen Fld are not required to present a negative COVID-19 PCR test or antigen result upon entering Lambert-St Louis.

Quarantine requirements
Visitors from Boise Air Term. Gowen Fld are not required to quarantine after entering Lambert-St Louis.

Hide COVID Travel Restrictions for Boise, ID

Alternative routes for St. Louis to Boise

See prices for flight routes from nearby airports that may be better suited for you.

Top 4 airlines flying from Lambert-St Louis to Boise Air Term. Gowen Fld

The chart below displays the airlines Cheapflights users traveling from St. Louis to Boise choose most often. Cheapest and average prices are based on aggregated data from the past 12 months.
Airline Cheapest Average Flexibility On-time COVID-19 safety
United Airlines
$243 $512 No cancel fee 69%
American Airlines
$254 $419 No cancel fee 71%
Delta
$254 $542 No cancel fee N/A
Alaska Airlines
$295 $491 No cancel fee 75%
Home Flights North America USA Idaho Boise Cheap flights from St. Louis to Boise