- Be in the knowGet alerts if flight prices drop or rise*
- Book smarterSave up to 30% on select hotels after you book a flight*
$85 Cheap American Airlines flights Washington (DCA) to St. Louis (STL)
Prices were available within the past 7 days and start at $85 for one-way flights and $169 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.
Origin airport | Ronald Reagan Washington National |
Destination airport | Lambert-St. Louis Intl. |
Airlines serving | Alaska Airlines, American Airlines, Delta, Frontier Airlines, United |
Popular airline | American Airlines |
Distance | 716 mi |
Flights from Washington (DCA) to St. Louis (STL) with American Airlines
❓ How much is a flight ticket from Washington (DCA) - St. Louis (STL) with American Airlines?
✔️ Prices were available within the past 7 days and start at $85 for one-way flights and $169 for roundtrip, for the period specified. Prices and availability are subject to change. Additional terms apply.
❓ Which month is the cheapest flight ticket for Washington (DCA) to St. Louis (STL) with American Airlines?
✔️ The airfares published on Expedia.com over the past 7 days saw the lowest prices for one-way departures in July and round-trip departures in July.
❓ How can I find cheap American Airlines tickets from Washington DCA to St. Louis STL?
✔️ Use the interactive calendar available on Expedia to see the cheapest American Airlines (Washington DCA - St. Louis STL) ticket prices during the weeks surrounding your travel dates. Compare flight prices for similar timeframes and adjust departure and return dates to get the cheapest fare possible. The lowest-priced days are highlighted in green.
While it’s impossible to guarantee when to find the lowest prices, our data currently suggests that July seems to be the cheapest month to take roundtrips and July seems to have the lowest one-way prices. Plane tickets for flight routes with one or more stops can sometimes be cheaper.
❓ When is the best time to buy flights from Washington to St. Louis?
✔️ Three weeks out can be the best time to book flights with various airlines on diverse routes according to ARC & Expedia Group historical data. The data also suggests that if book on a Sunday, you could possibly save up to 20% on fares*.
❓ What is the cheapest day to fly from DCA to STL?
✔️ ARC & Expedia Group historical data suggests that travelers can save on diverse routes when starting their journey on a Thursday for international flights and on a Friday for domestic flights*. The cheapest day of the week to fly changes based on seasonal demand and route popularity. We recommend using the ‘Show flexible dates’ feature at the top of your search.
❓ Can I change or cancel my American Airlines flight from Washington to St. Louis?
✔️ Airlines have different policies and fees for changes or cancellations. It’s important to review the ‘rules + restrictions’ section in your itinerary. We recommend filtering for ‘No change fees’ to see flexible plane tickets. Some airlines charge steep fees, while others are more flexible. Basic Economy or Light Fare tickets are generally non-refundable, but most airlines allow free cancellations or changes within 24 hours after booking. Find out more about changing or canceling your flight reservation by navigating to ‘My Trips’ and selecting ‘Change My Flight.’
*Data specialists from both ARC and Expedia Group analyzed ARC’s global flight data to distill actionable information to help people save money on travel. While it’s impossible to guarantee when to find the lowest prices, after examining the variables, we were able to observe trends.Best day of the week to book and travel recommendation is based on average round-trip ticket prices for January through early October, for both 2019 and 2020, sourced from ARC’s global airline sales database.
- Trending American Airlines Flights
- Trending Routes
- More Popular Airlines
- Nearby Airports
- Flights from Other Cities
- Expedia's Latest Trends
Most Popular American Airlines Routes from Washington
Most Popular American Airlines Routes from St. Louis
- American Airlines STL to DEN
- American Airlines STL to LGA
- American Airlines STL to ATL
- American Airlines STL to LAX
- American Airlines STL to BOS
- American Airlines STL to PHX
- American Airlines STL to MIA
- American Airlines STL to TPA
- American Airlines STL to IAH
- American Airlines STL to LAS
- American Airlines STL to EWR
- Cleveland to Cancun (CLE - CUN)
- Houston to Cancun (IAH - CUN)
- Chicago to Cancun (ORD - CUN)
- New York to Cancun (JFK - CUN)
- New York to Cancun (JFK - CUN)
- Dallas to San José del Cabo (DFW - SJD)
- New York to Punta Cana (JFK - PUJ)
- New York to Santiago (JFK - STI)
- New York to Miami (LGA - MIA)
- Newark to Miami (EWR - MIA)
Popular Domestic Routes in Lambert-St. Louis Intl.
- Newark to Orlando (EWR - MCO)
- New York to San Juan (JFK - SJU)
- New York to Santiago (JFK - STI)
- Dallas to Cancun (DFW - CUN)
- Los Angeles to Puerto Vallarta (LAX - PVR)
- Miami to Punta Cana (MIA - PUJ)
- Los Angeles to Cancun (LAX - CUN)
- Chicago to Cancun (ORD - CUN)
- Houston to Cancun (IAH - CUN)
- Los Angeles to Honolulu (LAX - HNL)
Nearby Airports
- College Park Airport (CGS)
- Tipton Airport (FME)
- Montgomery County Airpark Airport (GAI)
- Washington Dulles Intl. Airport (IAD)
- Manassas Regional Airport (MNZ)
- Baltimore Washington Intl. Thurgood Marshall Airport (BWI)
- Martin State Airport (MTN)
- Easton - Newnam Airport (ESN)
- Eastern West Virginia Regional Airport (MRB)
- Hagerstown Regional Airport (HGR)