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Cheap Flights from St. Louis to Boise $305.1

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Cheapest Flights from St. Louis to Boise (STL to BOI)

Prices found within past 7 days. Prices and availability subject to change. Additional terms may apply.

Interesting Facts About Flights from St. Louis to Boise (STL to BOI)

Question : Looking for the cheapest flight over the next 30 days?
Answer : As of Mar 20th, the cheapest day to fly from Saint Louis to Boise is Mar 25th. Tickets are currently being sold for $264, which is 26% below the average price for this route.

Question : Do prices fluctuate more for this route than others?
Answer : Ranging from $264 to $691, prices for STL to BOI change less than the majority of routes in the United States. Prices tend to be lower the further out you book.

Question : What is the cheapest round-trip ticket you can get to Boise?
Answer : United Airlines is the leader in keeping costs down for their passengers over the next three months. Fares are being booked at just $264 and, when compared to the more expensive bookings of $691, it's quite a deal.

Question : How many days should you spend in Boise?
Answer : Over the next two months, travelers from STL to BOI are planning on staying for four days on average.

Question : Will you do what it takes to get the absolute cheapest flight?
Answer : Thursday is your lowest-cost day to fly in the month of April. Having flexibility in your travel plans means you can save more, so be sure to plan ahead when possible.

Question : How often are flights late from Lambert-St. Louis International Airport (STL) to Boise Air Terminal (Gowen Field) (BOI)?
Answer : The Saint Louis to Boise route has been particularly poor at getting passengers to their destination on time and currently ranks among the worst in the world. When there is a delay, it averages about an hour and a half.

Question : Is this route your best bet for getting to Boise with minimal delays?
Answer : The best measurement of overall promptness combines both on-time percentage and total delay minutes. STL to BOI currently has 0 stars out of 5, earning it a far below-average performance compared to the rest of the world.