starting at $438
starting at $173
Flaut.Travel was designed and developed by a team dedicated to making the process of searching, comparing and booking airline tickets as easy and convenient as possible. Our service helps travelers to find and buy the cheapest flights from Washington to Saint Louis. We have connected more than 40 airlines and airline ticketing agencies to help you find the most suitable and affordable flight option.
We carefully collect statistics on the search and pricing of airlines and, based on these data, we make an assumption about future prices. Thus, you can better understand which season is the cheapest to fly from Washington to Saint Louis
A non-stop flight is the most convenient and comfortable way to fly from Washington to Saint Louis, despite the fact that sometimes flights with transfers can cost significantly less.
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Answers to questions about the route that travelers are most interested in.
We keep tight track on airlines' pre-holidays sales and other special offers occurences all the time to let you save maximum amount of funds while traveling to your family or just going out on vacation.
Flights from Washington to Saint Louis are operated by several airlines — Southwest Airlines and Frontier Airlines. This allows passengers to flexibly choose flights based on departure time, cost, and additional services. The minimum ticket price starts at $173, making this destination accessible to travelers with different budgets. We help compare all available options in real time, so you can book tickets at the best value for money. The service ensures transparent search and lets you book affordable flights in just a few clicks.
starting at $438
starting at $173
Baltimore — Saint Louis
09/26/2026
Departure
Direct flight
WN4749
starting at $439
Baltimore — Saint Louis
09/27/2026
Departure
Direct flight
WN1096
starting at $440
Baltimore — Saint Louis
09/28/2026
Departure
Direct flight
WN1096
starting at $438
Baltimore — Saint Louis
09/29/2026
Departure
Direct flight
WN4749
starting at $439
There are most likely no direct flights on the Washington — Saint Louis route
The cheapest flight ticket from Washington to Saint Louis according to data for the last 48 hours costs $173
Often the best time to buy tickets from Washington to Saint Louis is 2 months before departure.
Based on statistics over the past years, the lowest prices for flights from Washington to Saint Louis can be found flying in these months: September.
The fastest flights from Washington to Saint Louis start from 6 hours 22 minutes in the air.
The following airlines operate direct flights on the route Washington — Saint Louis: Southwest Airlines
All airports
The cheapest one-way flight from Washington to Saint Louis departs on 09/29/2026, is operated by Frontier Airlines and costs $173
There is no information about the cheapest roundtrip flight from Washington to Saint Louis
Fastest flight from Washington to Saint Louis takes 6h 22m
There are direct flights on this route 4 days a week: Su, Mo, Tu, and Sa
The distance between Washington and Saint Louis is 1140km (707 miles). There are 71 direct flights from Washington to Saint Louis. The time difference between Washington and Saint Louis is 1h. Flights from Washington begin at 8:00 AM. The latest flight from Washington departs at 7:59 PM
We couldn't find any special offers for flights from Washington to Saint Louis