$193 Cheap United flights from St. Louis to Boise (STL to BOI)

Find The Best Day To Fly from St. Louis to Boise

Amazing United STL to BOI Flight Deals

The cheapest flights to Boise found within the past 7 days were $296 round trip and $193 one way. Prices and availability subject to change. Additional terms may apply.

Tue, Sep 24 - Sat, Oct 5
STL
St. Louis
BOI
Boise
$296 Roundtrip, found 2 days ago
$296
Roundtrip
found 2 days ago
Select United flight, departing Tue, Sep 24 from St. Louis to Boise, returning Sat, Oct 5, priced at $296 found 2 days ago

Frequently asked questions

Can I catch a flight from Lambert Field to Boise Airport right now?
For information on any current Boise Airport (BOI) quarantine requirements and travel advice, go to the Covid-19 Travel Advisor. Check before you arrange your flight, so you don’t get caught out.
What terminal is United Airlines at St. Louis Lambert International Airport?
Check your boarding pass to find out which Lambert-St. Louis Intl. Airport (STL) terminal you’ll be departing from on your way to BOI with United Airlines. If you can’t spot the details on there, consult your airline.
Are there United Airlines non-stop flights from STL to BOI?
As you can’t travel direct from Lambert-St. Louis Intl. Airport (STL) to BOI with United Airlines, make the most of your stopover. Order some drinks at a cozy airport bar, or go for a wander around the terminal and enjoy some retail therapy.
How long is a United Airlines flight from STL to BOI?
Watch a movie or two, listen to some music or just recline your seat and drift off. Whatever interests you, find a way to pass the 5 hours and 44 minutes that it takes to travel from STL to BOI with United Airlines.
How many direct and indirect flights does United Airlines fly from STL to BOI?
You’ll have loads of flexibility if you choose to fly with United Airlines between STL and BOI. It operates roughly 2 flights every day.
If I am not able to travel due to COVID-19, can I change my booking to a later date?
For more info about changing your flight to Boise Airport, please visit our Customer Service Portal.
What is the best day to buy a plane ticket?
This just in! Airfares offered on Thursdays tend to be the cheapest, according to flight demand on Travelocity in 2021. Tuesday and Wednesday prices are also good, but you may want to prepare your budget if booking during the weekend, as data shows that is when prices are generally at their highest.
What are the cheapest days to fly?
Frequent travelers may already know this, but earlier in the week can be the cheapest time to fly. In 2021, flights departing on a Monday were generally the cheapest of the week, whereas you may pay a premium for weekend flights when demand is usually high. On average, tickets were most expensive for Saturday departures, so if you need to fly out on a weekend, you might look for deals ahead of time.
How far in advance can you book a flight?
Trying to figure out how early you should book your flight? It’s possible to start comparing international airfares on Travelocity up to 12 months in advance. However, it does depend on the carrier as not all airlines release their prices that far out. According to our 2021 flight demand trends, last minute planners can still bag a bargain with some of the cheapest fares appearing 0-2 weeks prior to their travel dates.*According to flight demand on Travelocity.com from January to December 2021. Savings are subject to change based on departure location, date and destination.

Discover our best United flight from St. Louis STL to Boise BOI 

To find the best deals on flights to St. Louis from Boise with United, just enter your travel dates, filter by United, and hit search. You’ll find flights to choose from and can sort by price, flight duration, and arrival or departure time.  

 

Return flights from St. Louis STL to Boise BOI with United 

If you’re planning a round trip, booking return flights with United is usually the most cost-effective option. With airfares ranging from $296 to $296, it’s easy to find a flight that suits your budget. Prices and availability subject to change. Additional terms may apply. 

 

Book one-way United flights from St. Louis STL to Boise BOI 

A one-way ticket gives you much greater flexibility—allowing you to choose your return date, destination, and time whenever you’re ready. By booking in advance you can find great deals on one-way tickets too. Right now, a one-way United flight from St. Louis to Boise costs from $193. Prices and availability subject to change. Additional terms may apply. 

 

The easy way to find cheap flights to Boise BOI from  St. Louis STL with United 

To find a cheap United flight from St. Louis STL to Boise BOI, sort your search results by price or filter by budget. Thanks to Travelocity’s Price Match Promise, if you find a better airfare deal anywhere else within 24 hours, we’ll credit or refund the difference. 

 

How to find our best airfare deals on United flights from St. Louis STL to Boise BOI 

If you’re looking for cheap flights, it helps to be flexible when it comes to your travel dates. You’ll usually find lower cost tickets when you travel during quieter months such as September, or if you book a flight with a stopover. 

 

Find nonstop flights from St. Louis STL to Boise BOI with United 

If you’re keen to be on Boise soil fast, don’t waste time with a stopover—filter your search results to show direct United flights only. The journey takes around hour(s) min(s) – so you’ll be there before you know it. 

 

Flexible airline tickets for United flights from St. Louis STL to Boise BOI 

Make sure you’re not out of pocket if plans change by choosing a flexible ticket with penalty-free amendment and cancellation options. Use our ‘no change fee’ filter to see which flights have this option.  

 

There are a lot of reasons to book your flights to Boise BOI from  St. Louis STL with United on Travelocity 

At Travelocity our vast and up-to-the-minute inventory puts all of our best flight deals in one place. So, whether you’re traveling on business or jetting off with friends and family, you can trust Travelocity to get you there.

United Airports
Hop on a(n) United flight today by flying to many destinations out of these domestic and international airports:
Airport code
Country
Airport name
Number of flights
ORDUSAO'Hare Intl.227
DENUSADenver Intl.226
IAHUSAGeorge Bush Intercontinental136
IADUSAWashington Dulles Intl.100
SFOUSASan Francisco Intl.64
LAXUSALos Angeles Intl.23
EWRUSALiberty Intl.20
FRADEUFrankfurt Intl.19
NRTJPNNarita Intl.19
PEKCHNCapital Intl.16

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