Book cheap flights to St Louis, MO

Compare cheap flights to St Louis, MO (United States) on Opodo, all in one search. View airlines, times, layovers and fares, then filter by departure time or journey length to find the best flight for you.

Flights to St Louis, MO arrive at St. Louis Lambert International Airport (STL), the main airport serving the destination.

The lowest fare to St Louis, MO booked on Opodo in recent days was £30. Use this as a guide only, as the final price will vary depending on your travel dates and how far in advance you book.

American Airlines is the airline most often chosen by travellers heading to St Louis, MO.

The ideal time to visit St Louis, MO may well come down to the weather you prefer. In St Louis, MO, average temperatures sit at around 31ºC during the hottest months and -3ºC during the coldest ones. Keep this in mind when deciding when to fly, what to pack and how to spend your time once you arrive.

• Highs: roughly 32ºC in the warmest months
• Lows: close to -5ºC in the coldest months
• Hottest month: July
• Coldest month: January
• Driest month: February
• Wettest month: May

Frontier Airlines flies direct to St Louis, MO. Non-stop routes are available from the following cities:

• Atlanta with Frontier Airlines
• Denver with Frontier Airlines
• Dallas with Frontier Airlines
• London with American Airlines
• London with Alaska Airlines

You can also fly to St Louis, MO making a stop along the way with airlines such as American Airlines. Here are some of the departure cities and the airline serving each route:

• London with American Airlines
• London with Air Canada
• Manchester with Frontier Airlines

A handful of simple checks can help you cut the cost of your trip to St Louis, MO:

• Flexible dates: look at a few different departure days before you decide. Flying a day earlier or later can sometimes make a real difference to the price.
• Nearby airports: it's worth weighing up the alternatives. A smaller airport not too far from St Louis, MO might be cheaper to fly into than the main one.
• Baggage: check what's included with each fare before you confirm. Knowing your allowance ahead of time means no nasty surprises at the airport.

Before you set off, double-check United States's entry requirements and leave yourself plenty of time to get your paperwork in order.

Don't forget that adding a hotel to your booking unlocks exclusive discounts on your stay. You can add car hire to the same booking too, and you may find further savings by bundling it with your flights and accommodation.