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

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 Boise Air Term. Gowen Fld to Lambert-St Louis are usually found in January or February, booked 49 days in advance, depart on a Tuesday or Sunday and return on a Wednesday

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

All the information you need to plan the best BOI to STL flight in 2022: compare Boise to St. Louis flight prices with the expected peak season, weather and rainfall in St. Louis.
BOI - STL
Price
$255 - $609
STL
Temperature
32 - 80.6 °F
STL
Rainfall
2.2 - 4.7 inches

Popular in

May

High demand for flights, 34% potential price rise

Cheapest in

January

Best time to find cheap flights, 37% potential price drop

Average price

$442

Average for round-trip flights in June 2022

Round-trip from

$255

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

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 Boise to St. Louis (BOI - STL)?

When flying from Boise to St. Louis, the time of day you fly usually plays a role in the price. Save by searching for a flight in the afternoon, which can drop the price by up to 25% versus a flight in the evening.

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

Users have found that booking a flight from Boise to St. Louis at least 49 days early can save you up to 65% on average compared to booking a flight this week. If booking 49 days before your flight isn’t an option for you, users have found flights from Boise to St. Louis for as little as $414 when booking for a departure date within the next two weeks. You can also check prices now. Some users have found airline tickets as low as $552 for flights departing within the next 3 days.

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

Departing on a Monday is a good option for securing a great price. You can expect to save up to 70% when planning your travel around this day of the week.

Cheap flights from Boise to St. Louis in June, July 2022

The best prices found for BOI to STL flights for June, July
19 Jul - 21 Jul
$404pp
BOI
Boise Air Term. Gowen Fld
Multiple Airlines
 
1 STOP
STL
Lambert-St Louis
STL
Lambert-St Louis
Multiple Airlines
 
1 STOP
BOI
Boise Air Term. Gowen Fld
8 Jul - 10 Jul
$408pp
BOI
Boise Air Term. Gowen Fld
Multiple Airlines
 
1 STOP
STL
Lambert-St Louis
STL
Lambert-St Louis
Multiple Airlines
 
1 STOP
BOI
Boise Air Term. Gowen Fld
8 Jul - 14 Jul
$422pp
BOI
Boise Air Term. Gowen Fld
Multiple Airlines
 
1 STOP
STL
Lambert-St Louis
STL
Lambert-St Louis
Multiple Airlines
 
1 STOP
BOI
Boise Air Term. Gowen Fld

Boise Air Term. Gowen Fld to St. Louis 2022 flight deals

Cheap flights to St. Louis from Boise found for this year
14 Sep - 19 Sep
$232pp
BOI
Boise Air Term. Gowen Fld
Multiple Airlines
 
1 STOP
STL
Lambert-St Louis
STL
Lambert-St Louis
Multiple Airlines
 
1 STOP
BOI
Boise Air Term. Gowen Fld
8 Aug - 16 Aug
$238pp
BOI
Boise Air Term. Gowen Fld
Multiple Airlines
 
1 STOP
STL
Lambert-St Louis
STL
Lambert-St Louis
Spirit Airlines
 
1 STOP
BOI
Boise Air Term. Gowen Fld
22 Sep - 28 Sep
$290pp
BOI
Boise Air Term. Gowen Fld
Multiple Airlines
 
1 STOP
STL
Lambert-St Louis
STL
Lambert-St Louis
Spirit Airlines
 
1 STOP
BOI
Boise Air Term. Gowen Fld

Last minute flights from Boise to St. Louis

Late deals on round-trip flights to St. Louis from Boise, departing today and this week
8 Jul - 10 Jul
$408pp
BOI
Boise Air Term. Gowen Fld
Multiple Airlines
 
1 STOP
STL
Lambert-St Louis
STL
Lambert-St Louis
Multiple Airlines
 
1 STOP
BOI
Boise Air Term. Gowen Fld
8 Jul - 14 Jul
$422pp
BOI
Boise Air Term. Gowen Fld
Multiple Airlines
 
1 STOP
STL
Lambert-St Louis
STL
Lambert-St Louis
Multiple Airlines
 
1 STOP
BOI
Boise Air Term. Gowen Fld
8 Jul - 12 Jul
$441pp
BOI
Boise Air Term. Gowen Fld
Multiple Airlines
 
1 STOP
STL
Lambert-St Louis
STL
Lambert-St Louis
Multiple Airlines
 
1 STOP
BOI
Boise Air Term. Gowen Fld

One-way flights to Lambert-St Louis from Boise

The cheapest one-way flights from Boise to St. Louis
7:59 pm - 5:02 am
Delta
1 Stop
8h 03m
BOI - STL
Delta
$269
Delta
2:44 am - 4:29 pm
American Airlines
2 Stops
12h 45m
BOI - STL
American Airlines
5:05 am - 7:38 pm
Alaska Airlines
2 Stops
13h 33m
BOI - STL
Alaska Airlines
$329
Alaska Airlines

Related info for your journey

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

Flight FAQs

From Boise to St. Louis

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

Due to the rapidly changing circumstances due to COVID-19, airlines like Delta, United Airlines, and American Airlines flying from Boise Air Term. Gowen Fld to Lambert-St Louis have implemented new flexible cancellation policies.

Can I find flights from Boise to St. Louis for under $300 on Cheapflights?

Yes, there are multiple flights from Boise to St. Louis for under $300. The cheapest flight booked recently is on Multiple Airlines for just $232, but on average you can expect to pay $418.

Are there last-minute flights available from Boise to St. Louis for under $500?

There are currently 20+ open flights from Boise to St. Louis within the next 7 days for less than $500.

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

Currently priced at $427, Spirit Airlines will fly you from Boise to St. Louis and back. In addition to Spirit Airlines, many other airlines offer competitively priced options for your trip. Check Cheapflights for deals on Delta for as low as $482.

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

The cheapest airlines for a one-way flight from Boise to St. Louis are Delta ($216), American Airlines ($323), and Alaska Airlines ($329).

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

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

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

The cheapest flight price from Boise to St. Louis is $291. On average you can expect to pay $554. The most popular route, (Boise Air Term. Gowen Fld - Lambert-St Louis), can usually be booked for $232.

COVID Restrictions

View COVID Travel Restrictions for St. Louis, MO

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

Information is based on travel restrictions for travel to Lambert-St Louis within the United States

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

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.

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

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

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.

Hide COVID Travel Restrictions for St. Louis, MO

Alternative routes for Boise to St. Louis

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

Destination information for St. Louis

Things to know before you go - useful duration and weather info for your trip from Boise to St. Louis.
Average temperature for June in St. Louis
86.0 °F
Avg rainfall for June in St. Louis
4.1 ″

Airports servicing Boise

Airports servicing St. Louis

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

The chart below displays the airlines Cheapflights users traveling from Boise to St. Louis 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
Alaska Airlines
$129 $399 No cancel fee 75%
United Airlines
$208 $421 No cancel fee 69%
American Airlines
$238 $508 No cancel fee 71%
Delta
$254 $469 No cancel fee N/A
Home North America USA Missouri St. Louis Cheap flights from Boise to St. Louis