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Cheap Flights from St Louis to Washington, DC, United States - STL to WAS Last modified: May 24, 2016 7:46 AM

Popular flights from St Louis to Washington Last modified: May 24, 2016 7:46 AM

We’ve got the inside scoop on finding the best time to fly for the best price. Not sure when to travel for your next vacation? Find details below on when-to-fly and when-to-buy.

Alaska Airlines
Departure Date Return Date Lowest Price
Jun 16, 2016 Jun 21, 2016 $345
Jun 21, 2016 Jun 28, 2016 $345
Jun 21, 2016 Jun 22, 2016 $345
Jul 19, 2016 Jul 26, 2016 $345
Jul 27, 2016 Aug 2, 2016 $345
American Airlines
Departure Date Return Date Lowest Price
Aug 24, 2016 Aug 27, 2016 $203
Aug 25, 2016 Aug 29, 2016 $203
Sep 13, 2016 Sep 17, 2016 $203
Sep 15, 2016 Sep 20, 2016 $203
United Airlines
Departure Date Return Date Lowest Price
Sep 17, 2016 Sep 24, 2016 $203

How Much Does it Cost to Fly from St Louis to Washington (STL to WAS)?

We have collected flight cost data from across the web for travel from St Louis to Washington, and have found the average flight price for this trip to be $295.

When Can I Buy the Cheapest Flight from St Louis to Washington (STL to WAS)?

Airlines can adjust prices for plane tickets from St Louis to Washington based on the day and time that you decide to book your flight. We have collected data from all airlines, and have discovered that the best days to book flights are Tuesdays, Wednesdays, and Saturdays. Read our article to find more information about the best time to buy airline tickets.

How far in advance should you book flights from St Louis to Washington

The chart below shows up-to-date information regarding how far in advance a flight from St Louis to Washington should be booked.

Non Stop versus 1-Stop
Advanced PurchaseNon StopOne Stop
< 7 days $693 $482
7-14 days $208 $216
14-21 days $208 $216
21-30 days $345 $282
30-60 days $345 $333
60-90 days $274 $278
90+ days $203 $210

Cheapest Day To Fly from St Louis to Washington

The chart below shows up-to-date information regarding the cheapest days to fly from St Louis to Washington.

Monday Tuesday Wednesday Thursday Friday Saturday Sunday
$274 $208 $282 $340 $338 $274 $345

Lowest Fares Chart By Month from St Louis to Washington

The chart below shows the lowest fare by month when flying from St Louis to Washington.

Month Origin Destination Carrier Depart Date Return Date Stops Price
May St Louis Washington American 5/31/16 6/9/16 0 $426
June St Louis Washington American 6/7/16 6/9/16 0 $208
July St Louis Washington American 7/27/16 8/2/16 1 $342
August St Louis Washington American 8/24/16 8/27/16 0 $203
September St Louis Washington American 9/13/16 9/17/16 0 $203
October St Louis Washington American 10/7/16 10/11/16 0 $274
November St Louis Washington United 11/1/16 11/19/16 1 $332
December St Louis Washington American 12/21/16 12/29/16 1 $343

Cheapest Weekend Non-Stop Flights for the Next 30 Days from St Louis to Washington

If you're ready to take a trip in the next 30 days and want to fly on the weekend, you might be wondering which weekend is the cheapest to fly. The chart below shows up-to-date data regarding weekend flight prices from St Louis to Washington.

Next 30 Days

SunMonTueWedThuFriSat
22 23 24 25 26 27 28
$693
29 30 31 1 2 3 4
$693 $565
5 6 7 8 9 10 11
$565 $352
12 13 14 15 16 17 18
$352 $345
19 20 21 22 23 24 25
$345 $355
26 27 28 29 30 1 2
$355

Non-Stop vs Connecting Flights from St Louis to Washington (STL to WAS)

Your St Louis to Washington flight can be significantly cheaper by choosing a multi-stop airline ticket. Although these connecting flights sacrifice some convenience, on average, travelers save 20%-60% when they choose to fly multi-stop versus a direct flight.

The average price for connecting flights from St Louis to Washington is $405.

The average price for non-stop flights from St Louis to Washington is $345.

The chart below shows up to date information regarding non-stop flights from St Louis to Washington.

Nonstop Flight Details from St Louis to Washington
CarrierMonTueWedThuFriSatSunEarliest FlightLatest Flight
American 4 4 4 4 4 3 4 06:09 18:00
United 4 4 4 4 4 3 4 08:45 18:17

Round Trip vs One Way Flights from St Louis to Washington (STL to WAS)

We have found that there is often no price difference between buying a round trip flight versus a one way flight. Increased flexibility is the main benefit when it comes to buying a one way flight from St Louis to Washington. However, booking a round trip flight can be a simpler process. You can compare round trip and one way flights by using our flight comparison.

The average price for one way flights from St Louis to Washington is $151.

The average price for round trip flights from St Louis to Washington is $309.

St Louis to Washington Flight Questions

Below are some common questions that asked about this flight route:

Question: How long is a direct flight from St Louis to Washington?
Answer: The average St Louis to Washington flight time is 2 hours and 4 minutes.
Question: How many miles are there between St Louis and Washington?
Answer: The distance from St Louis to Washington is 694 miles.
Question: How common are direct flights from St Louis to Washington?
Answer: There are 54 direct flights from St Louis to Washington.
Question: What is the most popular airline for non-stop flights from St Louis to Washington?
Answer: American Airlines provides 50% of the non-stop flights between St Louis and Washington.
Question: What are the most popular connecting cities when flying from St Louis to Washington?
Answer: Chicago, IL

Airlines Flying from St Louis to Washington (STL to WAS) Number of flights searched: 204Last modified: May 24, 2016 7:46 AM

Below are the different airlines that fly from St Louis to Washington with the average price of their plane tickets. Just remember that different airlines offer different levels of comfort and service, so consider convenience when choosing your airline.

Below is the full flight schedule summary of the next 30 days for flights from St Louis to Washington.

St Louis to Washington
Airline Connections Mon Tue Wed Thu Fri Sat Sun
American - X X X X X X X
American CLT X X X X X X X
Delta ATL X X X X X X X
United - X X X X X X X
United ORD X X X X X X X
Southwest - X X X X X X X
Southwest ATL X X X X X X X

Airports for Your Route

These pages contain information about the major airports in St Louis and Washington, so you can feel comfortable knowing how to get around whether you are about to take off or you just landed.

Cheap Domestic Flights from St Louis - STL

FlightsAirlineLowest Price
St Louis to Baltimore American, Alaska, United $330
St Louis to New York American, Alaska, United $244
St Louis to Philadelphia American, Alaska, United $325
St Louis to Atlanta American, Alaska, Frontier, United $88
St Louis to Chicago American, Alaska, United $213
St Louis to Newark American, Alaska, JetBlue, United $253
St Louis to Richmond American, Alaska, United $275
St Louis to Harrisburg American, Alaska, United $369
St Louis to Charlotte American, Alaska, United $349
St Louis to Pittsburgh American, Alaska, United $193
St Louis to Boston American, Alaska, United $360
St Louis to Charlottesville American, United $294
St Louis to Norfolk American, Alaska, United $293
St Louis to Dallas - Ft Worth American, Alaska, United $203
St Louis to Raleigh - Durham American, Alaska, United $308

Cheap Domestic Flights to Washington - WAS

Cheap Flights from St Louis to Washington, DC, United States, from $203 Round trip from STL to WAS