Vuelos Desde Boise (BOI) a A. Internacional Lambert-St. Louis (STL) Empezando Desde $151

Be sure to visit the Covid-19 Travel Advisor to learn if there are any current quarantine requirements and travel advice reports in place in Lambert Field when jet-setting from BOI.

You can’t fly direct from BOI to STL, but there’s no need to stress. Alaska Airlines, Southwest Airlines and American Airlines advertise flights with only one stopover.

For more info about changing your flight to Lambert-St. Louis Intl. Airport (STL), please visit our Customer Service Portal.

If you’re flying from Boise to St. Louis, you can expect the journey to take approximately 4 hours and 56 minutes. If this sounds longer than you would have liked, why not take advantage of it? Read up on your destination, work on your itinerary and get as much sleep as possible before the adventure starts.

There’s a flight distance of 1,400 mi between BOI and STL. This is classified as a medium-haul flight. You’ll have plenty of time to take advantage of the in-flight entertainment and squeeze in some sleep if you’re feeling tired.

Currently, no single airline flies direct to Lambert Field from Boise Airport (BOI). Heading over there involves at least one stopover. Book your airfare early to walk away with the best price and connections.

From the moment you enter the departure terminal to when you leave the arrivals terminal, if you’re flying with Southwest Airlines, American Airlines or Delta you can be sure that COVID-19 measures and social distancing rules have been adhered to. Many airlines have introduced capped capacity flights and keeping the middle seat empty.

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.

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.

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.