Cheap Flights From Lambert-St. Louis Intl. (STL) To O'Hare Intl. (ORD)

Your next incredible adventure is on the opposite side of just one flight. You can travel direct from St. Louis Lambert International Airport to ORD with multiple airlines, including United Airlines and American Airlines.

Choose from a number of airlines that offer direct flights between St. Louis and Chicago. United Airlines (UA) is one of the most well-known. This air carrier operates roughly 212 flights every month. You may want to also look up the deals on offer from American Airlines (AA). This airline operates 165 flights monthly on the St. Louis to Chicago route. Compare the two to find your ideal fare.

Airfares offered on Friday tend to be the cheapest, according to flight demand on Travelocity.ca in 2021. Purchasing your airfares on a Thursday or Saturday can also provide better value, however our advice if you’re looking to save money is to avoid booking on a Wednesday or Sunday. Our data shows that those two days have the highest ticket values on average, so keep this in mind if you’re browsing flight deals.

Frequent travellers may already know this, but earlier in the week is often the cheapest time to fly. Flights departing on a Monday are the cheapest of the week. Since flights towards the middle of the week tend to be more popular, this causes the prices to rise. This is why, on average, airfares booked on Travelocity.ca in 2021 were most expensive for Wednesday departures.

Here’s the deal: It is typically possible to start comparing international airfares on Travelocity.ca 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 2-4 weeks prior to their travel dates.*According to flight demand on Travelocity.ca from January to December 2021. Savings are subject to change and may vary depending on selections made.