Cheap Flights from St Louis to District of Columbia from $212 Return

Flight deals from St Louis to District of Columbia

Looking for a cheap last-minute deal or the best return flight from St Louis to District of Columbia? If you want to travel next month, return fares start from $212. Find the lowest prices on one-way and return tickets right here.

Washington D.C..$212 per passenger.Departing Tue, 9 Jun, returning Tue, 16 Jun.Return flight with Frontier Airlines.Outbound indirect flight with Frontier Airlines, departs from St Louis on Tue, 9 Jun, arriving in Baltimore Washington International.Inbound indirect flight with Frontier Airlines, departs from Baltimore Washington International on Tue, 16 Jun, arriving in St Louis.Price includes taxes and charges.From $212, select.

Washington D.C..$405 per passenger.Departing Wed, 17 Jun, returning Wed, 24 Jun.Return flight with Southwest Airlines.Outbound direct flight with Southwest Airlines departs from St Louis on Wed, 17 Jun, arriving in Washington Ronald Reagan.Inbound direct flight with Southwest Airlines departs from Washington Ronald Reagan on Wed, 24 Jun, arriving in St Louis.Price includes taxes and charges.From $405, select.

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Flying from St Louis to District of Columbia

Arm yourself with these facts on the fly.

Cheapest flight found	$212
Cheapest month to fly	June
Average flight time	2 hrs, 6 mins
Cheapest airport to fly from	St Louis
Most popular airline	Southwest Airlines

How to find cheap flights from St Louis to District of Columbia

We've compared the best online travel agents and flight providers on the internet to find the cheapest plane tickets from St Louis to District of Columbia. Other savvy travellers recently found return flights from $212 and one-way tickets from $105 one-way. Ready to join them? Here are a few tips to help you do it the smart way.

Fly from St Louis into Baltimore Washington International

At the moment, the lowest priced flight tickets to District of Columbia are from St Louis Airport to Baltimore Washington International Airport.

Fly in June

We crunched the flight calendar and found the cheapest time to fly from St Louis to District of Columbia is currently June.

Flex your dates for the best rates

If you’re flexible on your departure dates, you can use Skyscanner's whole month tool to find the cheapest day of the year to fly from St Louis to anywhere you choose in District of Columbia.

Watch as fares rise and fall

With Price Alerts, we'll let you know when flight prices from St Louis to District of Columbia go up or down so you can book when the time is just right.

Relax – these are fee-free flight tickets

With us, there are no added fees – the District of Columbia to District of Columbia flight price you see when you search with us is what you pay to the provider.

Frequently asked questions

What's the average St Louis to District of Columbia flight price?

We looked at all of the upcoming return flights from St Louis to District of Columbia we could find over the next 12 months. It looks like $212 is the best price. This is good, compared to the average District of Columbia ticket price of $309.

What is the cheapest month to fly from St Louis to District of Columbia?

The cheapest month to fly from St Louis to Washington Ronald Reagan Airport is currently June. The cheapest month to fly from St Louis to Baltimore Washington International Airport is usually June

Which upcoming date is cheapest to fly from St Louis to District of Columbia on?

After crunching the numbers on our flight calendar, we found that it is currently cheapest to fly from St Louis to District of Columbia on Tuesday, 9 June 2026.

Are there any direct flights from St Louis to District of Columbia?

St Louis Airport offers direct flights to District of Columbia.

If I'm flying from St Louis, where in District of Columbia is cheapest to fly into?

If you're flying from St Louis, the cheapest city in District of Columbia to fly into is Washington D.C.. The cheapest airport serving Washington D.C. at the moment is Baltimore Washington International.