What’s the cost of a flight from Washington Dulles to Saint Louis?

Prices vary based on date, airline, and availability. Compare several options if you're flying between Washington and Saint Louis.

Choose a date to explore the best fares now.

If possible, avoid holiday periods: ticket prices tend to rise quickly and availability drops, especially on busy routes. Morning and evening flights are often in high demand too — book early to get a good fare.

Flying from or to Washington and Saint Louis? Here are your airport options

Knowing your full list of nearby airports can make flight planning easier, especially when routes vary.

• Airports in Washington: You have 3 departure options - Dulles international, Ronald Reagan, Washington International.
• Airports in Saint Louis: Saint Louis - Lambert is the only arrival option right now.

For families or those traveling with assistance, smaller airports can be easier to navigate. Cities served by multiple airports often allow for more flexible travel planning.

Choose the right flight for your trip from Washington Dulles to Saint Louis

Jetcost helps you tailor your flight search based on what matters to you — flight length, budget, airline, or agency. Whether you prefer round-trip or one-way, direct or with stopovers, you’ll see options from eDreams, Expedia, and more.

Other popular destinations

Flying to United States? Many users also explore: Boston, Los Angeles, Miami, New York City, Orlando.

Looking for a specific airline? Select it directly in the filters to speed up your search. The search filters help you see only the options that match your needs.