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STL (St. Louis) to BOI (Boise) Flights $343.89

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Here are your best fares found in the past 7 days

The lowest fare found for this route is $391.1 on Sun, Aug 27 from STL to BOI
Flights Fare Calendar Find minimum fare between origin STL and destination BOI Click this button to get previous 30 days data Click this button to get next 30 days data $1026 $880 $733 $586 $440 $293 $146 $0 Jun Jul 24 25 26 27 28 29 30 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 1 2 3 4 5 6 7 8 9 10 11 S S M T W T F S S M T W T F S S M T W T F S S M T W T F S S M T W T F S S M T W T F S S M T W T F S S M T W T F S S M T W T F S S M T W T F S S M T W T F S S M T W T F S S M T W T F S S M T W T F S S M T W T F S S M T W Price is $ 880.1 on Alaska Airlines Price is $ 788.99 on Alaska Airlines Price is $ 722.7 on Alaska Airlines Price is $ 696.2 on Alaska Airlines Price is $ 692.1 on United Price is $ 685.1 on Alaska Airlines Price is $ 433.1 on Delta Price is $ 433.1 on Delta Price is $ 432.71 on American Airlines Price is $ 432.71 on Delta Price is $ 423.63 on United Price is $ 402.43 on United Price is $ 399.1 on Delta Price is $ 391.1 on United

Cheap STL to BOI Flights

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 : 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 a flight is late, it's a 63-minute delay on average.

Question : What day in the next four weeks has the best fares?
Answer : As of Jun 19th, the best day for deals to Boise (BOI) is Jul 18th. It costs $361, which is 22% below this route's average price.

Question : Do prices fluctuate more for this route than others?
Answer : Prices for this trip tend to fluctuate less than other flights in the United States. They can range from $361 to $806. Prices tend to be lower the further out you book.

Question : Do travelers from Saint Louis typically stay in Boise for very long?
Answer : Over the next two months, travelers from STL to BOI are planning on staying for about one week on average.

Question : How does Saint Louis to Boise stack up against the rest of the world in overall promptness?
Answer : Using the combined on-time percentage and average delay breakdown, Saint Louis to Boise currently has a 0 out of a possible 5 star rating. A 0-star rating means you should feel rather worried about getting to Boise on time.

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

Question : Who's offering the cheapest round-trip flight to Boise Air Terminal (Gowen Field) (BOI) over the coming months?
Answer : Delta Air Lines is your best bet for finding that coveted low fare. They're offering fares as low as $361, while prices for other flights are as high as $806.