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Cheap Flights from St Louis to Boise, ID, United States - STL to BOI

Popular flights from St Louis to Boise

We’ve got the inside scoop on finding the best time to fly for the best price. Not sure when to travel for your next vacation? Find details below on when-to-fly and when-to-buy.

Alaska Airlines
Departure Date Return Date Lowest Price
Jul 20, 2016 Jul 26, 2016 $445
American Airlines
Departure Date Return Date Lowest Price
May 24, 2016 May 31, 2016 $355
Jun 1, 2016 Jun 8, 2016 $355
United Airlines
Departure Date Return Date Lowest Price
Aug 30, 2016 Sep 10, 2016 $357

How Much Does it Cost to Fly from St Louis to Boise (STL to BOI)?

We have collected flight cost data from across the web for travel from St Louis to Boise, and have found the average flight price for this trip to be $408.

When Can I Buy the Cheapest Flight from St Louis to Boise (STL to BOI)?

Airlines can adjust prices for plane tickets from St Louis to Boise based on the day and time that you decide to book your flight. We have collected data from all airlines, and have discovered that the best days to book flights are Tuesdays, Wednesdays, and Saturdays. Read our article to find more information about the best time to buy airline tickets.

Cheapest Day To Fly from St Louis to Boise

The chart below shows up-to-date information regarding the cheapest days to fly from St Louis to Boise.

Monday Tuesday Wednesday Thursday Friday Saturday Sunday
$386 $355 $355 $365 $386 $648 $366

Round Trip vs One Way Flights from St Louis to Boise (STL to BOI)

We have found that there is often no price difference between buying a round trip flight versus a one way flight. Increased flexibility is the main benefit when it comes to buying a one way flight from St Louis to Boise. However, booking a round trip flight can be a simpler process. You can compare round trip and one way flights by using our flight comparison.

The average price for one way flights from St Louis to Boise is $196.

The average price for round trip flights from St Louis to Boise is $426.

St Louis to Boise Flight Questions

Below are some common questions that asked about this flight route:

Question: What are the most popular connecting cities when flying from St Louis to Boise?
Answer: Denver, CO

Airlines Flying from St Louis to Boise (STL to BOI)

Below are the different airlines that fly from St Louis to Boise with the average price of their plane tickets. Just remember that different airlines offer different levels of comfort and service, so consider convenience when choosing your airline.

Below is the full flight schedule summary of the next 30 days for flights from St Louis to Boise.

St Louis to Boise
Airline Connections Mon Tue Wed Thu Fri Sat Sun
American PHX X X X X X X X
Alaska PDX X X X X X X X
Delta MSP X X X X X X X
Delta CVG / MSP X X X X X X X
United ORD X X X X X X X
Southwest LAS X X X X X X X

Airports for Your Route

These pages contain information about the major airports in St Louis and Boise, so you can feel comfortable knowing how to get around whether you are about to take off or you just landed.

Cheap Domestic Flights from St Louis - STL

FlightsAirlineLowest Price
St Louis to Las Vegas American, Alaska, Frontier, United $123
St Louis to Seattle American, Alaska, Frontier, United $269
St Louis to Los Angeles American, Alaska, Frontier, United $261
St Louis to San Francisco American, Alaska, Frontier, United $261
St Louis to Denver American, Alaska, Frontier, United $118
St Louis to Salt Lake City American, Alaska, Frontier, United $253
St Louis to Dallas - Ft Worth American, Alaska, United $203
St Louis to Chicago American, Alaska, United $213
St Louis to Phoenix American, Alaska, Frontier, United $278
St Louis to Portland American, Alaska, Frontier, United $244
St Louis to Atlanta American, Alaska, Frontier, United $88
St Louis to Sun Valley American, Alaska, United $663
St Louis to New York American, Alaska, United $252
St Louis to Jackson American, Alaska, United $552
St Louis to San Diego American, Alaska, United $270
St Louis to Reno American, Alaska, United $366
St Louis to Bozeman American, Alaska, Frontier, United $496
St Louis to Twin FallsCheck Dates
St Louis to Sacramento American, Alaska, United $378

Cheap International Flights from St Louis - STL

FlightsAirlineLowest Price
St Louis to Vancouver American, Air Canada, Alaska, Frontier, United, WestJet $344

Cheap Domestic Flights to Boise - BOI

FlightsAirlineLowest Price
Moline to Boise American, Alaska, United $601
Springfield to Boise American, Alaska, United $455
Evansville to Boise American, United $530
Peoria to Las Vegas American, United $304
Springfield to Las Vegas American, United $452
Moline to Las Vegas American, Alaska, United $304
Bloomington - Normal to Denver American $350
Springfield to Seattle American, Alaska, United $472
Springfield to Las Vegas American, United $379
Evansville to Las Vegas American, United $377
Cheap Flights from St Louis to Boise, ID, United States, from $355 Round trip from STL to BOI