Users have found that booking a flight from Trenton-Mercer to Lambert-St Louis Intl at least 61 days early can save you up to 27% on average compared to booking a flight this week. If booking 61 days before your flight isn’t an option for you, users have found flights from Trenton-Mercer to Lambert-St Louis Intl for as little as $164 when booking for a departure date within the next two weeks. You can also check prices now. Some users have found airline tickets as low as $181 for flights departing within the next 3 days.
When flying from Trenton-Mercer to Lambert-St Louis Intl, the time of day you decide to fly out makes little to no difference towards the overall price you’ll pay on tickets.