Cheap flights from St. Louis to Boise (STL - BOI) from $97
This is the cheapest one-way flight price, found on 9/21. Prices may vary by date and flight preferences.
The best prices from Lambert-St Louis to Boise Air Term. Gowen Fld are usually found in January or February, booked 39 days in advance, depart on a Monday or Thursday and return on a Monday
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 2023: compare St. Louis to Boise flight prices with the expected peak season, weather and rainfall in Boise.
Popular in | June |
|---|---|
Cheapest in | January |
Round-trip from | $287 |
One-way from | $199 |
STL - BOI Price | $287 - $545 |
|---|---|
BOI Temperature | 30.2 - 75.2 °F |
BOI Rainfall | 0.2 - 1.6 inches |
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 19% 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 $567.
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 January, with the cheapest ticket starting at $247.
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 morning, which can drop the price by up to 32% versus a flight at noon.
Cheap Spirit Airlines flights from St. Louis to Boise
Take a peek at the cheapest Spirit Airlines flights we've detected traveling from St. Louis to Boise. Be sure to come back soon if the deals available don't appeal to you at this time.
Cheap Delta flights from St. Louis to Boise
To aid your search, here are some of the cheapest Delta flights we've found from St. Louis to Boise. Deals are refreshing constantly so come back soon for more options.
Cheap St. Louis to Boise flights in September & October 2023
The best prices found for STL to BOI flights for September, October
These are some of the best deals we've found on flights to Boise in 2023 at this time. Check back soon for alternative fares.
St. Louis to Boise 2023 flight deals
Cheap flights to Boise from St. Louis found for this year
These are some of the best deals we've found on flights to Boise in 2023 at this time. Check back soon for alternative fares.
St. Louis to Boise flights leaving soon
Late deals on return flights to Boise from St. Louis, departing today and this week
Have a look at some of the flights available from St. Louis to Boise departing last-minute. Users should double check the flight they book to ensure it matches the day, time, and destination they're looking for.
One-way flights to Boise from St. Louis
The cheapest one-way flights from St. Louis to Boise
Users traveling one-way from St. Louis to Boise can select one of these great deals. Those needing a return flight from St. Louis to Boise can use the search form above.
Find flights from St. Louis to Boise within your budget
Use the slider to find flights from St. Louis to Boise that fit your budget.
Fly from
Fly to
Budget
$164 - $586
Route
Depart
Return
Price
Lambert-St LouisBoise Air Term. Gowen Fld
STL - BOI
STLBOI
Lambert-St Louis
Tue 10/17
1 stop18h 56m
Boise Air Term. Gowen Fld
Sat 10/21
2 stops12h 37m
Lambert-St LouisBoise Air Term. Gowen Fld
STL - BOI
STLBOI
Lambert-St Louis
Tue 10/17
1 stop18h 56m
Boise Air Term. Gowen Fld
Thu 10/19
2 stops9h 22m
Lambert-St LouisBoise Air Term. Gowen Fld
STL - BOI
STLBOI
Lambert-St Louis
Tue 10/17
2 stops18h 34m
Boise Air Term. Gowen Fld
Tue 10/24
3 stops27h 20m
Lambert-St LouisBoise Air Term. Gowen Fld
STL - BOI
STLBOI
Lambert-St Louis
Fri 11/3
2 stops16h 19m
Boise Air Term. Gowen Fld
Mon 11/6
1 stop14h 24m
Lambert-St LouisBoise Air Term. Gowen Fld
STL - BOI
STLBOI
Lambert-St Louis
Mon 10/16
3 stops30h 17m
Boise Air Term. Gowen Fld
Tue 10/24
3 stops27h 20m
Lambert-St LouisBoise Air Term. Gowen Fld
STL - BOI
STLBOI
Lambert-St Louis
Mon 10/16
3 stops30h 17m
Boise Air Term. Gowen Fld
Wed 10/18
3 stops35h 15m
Lambert-St LouisBoise Air Term. Gowen Fld
STL - BOI
STLBOI
Lambert-St Louis
Sat 10/14
2 stops10h 25m
Boise Air Term. Gowen Fld
Tue 10/24
2 stops9h 44m
Lambert-St LouisBoise Air Term. Gowen Fld
STL - BOI
STLBOI
Lambert-St Louis
Sat 10/14
2 stops10h 25m
Boise Air Term. Gowen Fld
Sat 10/21
1 stop8h 13m
Lambert-St LouisBoise Air Term. Gowen Fld
STL - BOI
STLBOI
Lambert-St Louis
Wed 10/4
1 stop13h 12m
Boise Air Term. Gowen Fld
Mon 10/9
1 stop7h 49m
Reviews of airlines servicing Boise
See what other customers who have flown with Spirit Airlines, Delta and United Airlines from St. Louis to Boise have to say. You can also see how each airline compares in terms of entertainment options, comfort, food, crew/service, and boarding process.
Crew
Food
Boarding
Entertainment
Overall
Comfort
Reviews
A little more leg room would be nice, even a half inch more would be good for me. I am 6’2” and my knees were constantly against the seat in front of me. It would also be great if the seat manufacturer would smooth out or remove the plastic stuff on the seat backs where everyone’s knees go.
Crew
Food
Boarding
Entertainment
Overall
Comfort
Reviews
A little more leg room would be nice, even a half inch more would be good for me. I am 6’2” and my knees were constantly against the seat in front of me. It would also be great if the seat manufacturer would smooth out or remove the plastic stuff on the seat backs where everyone’s knees go.
Crew
Food
Boarding
Entertainment
Overall
Comfort
Reviews
A little more leg room would be nice, even a half inch more would be good for me. I am 6’2” and my knees were constantly against the seat in front of me. It would also be great if the seat manufacturer would smooth out or remove the plastic stuff on the seat backs where everyone’s knees go.
Crew
Food
Boarding
Entertainment
Overall
Comfort
Reviews
A little more leg room would be nice, even a half inch more would be good for me. I am 6’2” and my knees were constantly against the seat in front of me. It would also be great if the seat manufacturer would smooth out or remove the plastic stuff on the seat backs where everyone’s knees go.
Crew
Food
Boarding
Entertainment
Overall
Comfort
Reviews
A little more leg room would be nice, even a half inch more would be good for me. I am 6’2” and my knees were constantly against the seat in front of me. It would also be great if the seat manufacturer would smooth out or remove the plastic stuff on the seat backs where everyone’s knees go.
Related info for your journey
Useful info, stats and facts about St. Louis to Boise flights.
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 $164, but on average you can expect to pay $288.
Are there last-minute flights available from St. Louis to Boise for under $400?
There are currently 5+ open flights from St. Louis to Boise within the next 7 days for less than $400.
What are the cheapest airlines flying from St. Louis to Boise round-trip?
According to our current data, Spirit Airlines ($243), and Delta ($334) offers the cheapest pricing from St. Louis to Boise. Spirit Airlines is priced at 53% 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 $149. Alaska Airlines flights start at $402 while deals on United Airlines start at $415 one-way.
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.
What does STL to BOI mean?
Great question - STL to BOI just means Lambert-St Louis Airport to Boise Air Term. Gowen Fld Airport. Now you’ll know what these unique codes when you look for flights!
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Top 5 airlines flying from St. Louis to Boise
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.
Hourly flight availability from St. Louis to Boise
See what time of day planes typically take off from St. Louis to Boise
| 0%of flight departures | Early morningMidnight to 6 am |
|---|---|
| 0%of flight departures | Morning6 am to noon |
| 100%of flight departures | AfternoonNoon to 6 pm |
| 0%of flight departures | Evening6 pm to midnight |