Cheap flights from Idaho to St. Louis (STL) from $54

Located just 12.7 mi from the city center, Lambert-St Louis (STL) is the airport most travelers will use when flying to St. Louis from Idaho.

Yes, there are multiple flights from Idaho to St. Louis for under $300. The cheapest flight booked recently is on Spirit Airlines for just $207, but on average you can expect to pay $338.

There are currently 5+ open flights from Idaho to St. Louis within the next 7 days for less than $400.

To fly one-way, consider booking your trip with Spirit Airlines, which is currently one of the cheapest options available, starting at $54. American Airlines flights start at $151 while deals on Delta start at $159 one-way.

When deciding which route to take from Idaho to St. Louis consider Boise Air Term. Gowen Fld - Lambert-St Louis, Spokane - Lambert-St Louis or Jackson Hole - Lambert-St Louis as they are the most popular.

This is defined as Boise Air Term. Gowen Fld Airport (BOI) and Lambert-St Louis Airport (STL). Codes like Lambert-St Louis Airport are often used to just call airports uniquely. This flight route has multiple associated airports, so we think it might be helpful to learn the name and codes of them as well. They are Idaho Falls Fanning Field Airport (IDA), Hailey Sun Valley-Friedman Airport (SUN), Lewiston Nez Perce Rgnl Airport (LWS), Twin Falls Joslin Airport (TWF), Pocatello Airport (PIH).

The amount of baggage you can bring on your Idaho to St. Louis flight depends on the airline and the type of fare you've chosen. After entering your flight details, you'll be able to view the specific baggage policies for each deal in the search results. Keep in mind that certain deals may offer additional baggage allowance.

Yes, Cheapflights allows you to browse and filter Idaho to St. Louis flight deals by airline. After entering your origin and destination, use the available filters to view flights offered by airlines.

Yes. In addition to deals on Idaho to St. Louis flights, Cheapflights offers vacation packages that include both flights and hotel.

After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Idaho to St. Louis.

Yes. Cheapflights offers flight deals from Idaho to St. Louis by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

Many airlines flying from Idaho to St. Louis offer the option to travel with pets. After selecting a flight deal, you can find more information about the airline's pet policy on their official website or by contacting the airline directly. Please note that additional fees and restrictions may apply.

Yes, you can often find last-minute deals on Idaho to St. Louis flights on Cheapflights. However, these deals can vary and may not always be available. We recommend checking back frequently or signing up for price alerts for the most up-to-date deals.

The Idaho to St. Louis flight deals you see on this page were last updated on 5/29.

When booking a flight from Idaho to St. Louis, you may want to consider flying on American Airlines, Alaska Airlines or Delta as they are the most popular for this route.

Currently, September is the cheapest month in which you can book a flight from Idaho to St. Louis (average of $319). Flying from Idaho to St. Louis in July is currently the most expensive (average of $366). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.