
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $144 (Kiwi.com) |
One-way from | $72 (Trip.com) |
Popular in | May |
Cheapest in | August |
Average price | $374 |
Good round-trip deal | $329 or less |
Good one-way deal | $168 or less |
Fly from
Fly to
Route
Depart
Return
St. LouisWashington, D.C.
STL - DCA
STLDCA
Lambert-St Louis
Sat 8/8
9:00 am-6:40 pm
2 stops8h 40m
Washington, D.C. Reagan-National
Mon 8/10
6:50 am-1:05 pm
1 stop7h 15m
St. LouisBaltimore
STL - BWI
STLBWI
Lambert-St Louis
Wed 8/26
7:25 am-1:58 pm
1 stop5h 33m
Baltimore/Washington
Sat 8/29
8:10 am-2:57 pm
1 stop7h 47m
St. LouisWashington, D.C.
STL - IAD
STLIAD
Lambert-St Louis
Sat 8/22
8:00 am-1:55 pm
1 stop4h 55m
Washington, D.C. Dulles Intl
Sat 8/29
8:25 am-9:39 am
Nonstop2h 14m
St. LouisBaltimore
STL - BWI
STLBWI
Lambert-St Louis
Wed 8/26
8:00 am-11:05 am
Nonstop2h 05m
Baltimore/Washington
Sat 8/29
10:45 am-1:35 pm
1 stop3h 50m
St. LouisBaltimore
STL - BWI
STLBWI
Lambert-St Louis
Tue 7/21
6:20 pm-9:30 pm
Nonstop2h 10m
Baltimore/Washington
Tue 7/28
5:55 pm-7:15 pm
Nonstop2h 20m
St. LouisWashington, D.C.
STL - IAD
STLIAD
Lambert-St Louis
Tue 8/11
8:40 am-11:57 am
Nonstop2h 17m
Washington, D.C. Dulles Intl
Fri 8/21
8:20 am-12:02 pm
1 stop4h 42m
St. LouisWashington, D.C.
STL - DCA
STLDCA
Lambert-St Louis
Tue 8/11
7:10 pm-10:10 pm
Nonstop2h 00m
Washington, D.C. Reagan-National
Fri 8/21
1:00 pm-4:20 pm
1 stop4h 20m
St. LouisWashington, D.C.
STL - DCA
STLDCA
Lambert-St Louis
Sat 8/22
3:00 pm-6:00 pm
Nonstop2h 00m
Washington, D.C. Reagan-National
Sun 8/30
12:00 pm-1:15 pm
Nonstop2h 15m
St. LouisWashington, D.C.
STL - DCA
STLDCA
Lambert-St Louis
Fri 8/7
10:10 am-6:00 pm
2 stops6h 50m
Washington, D.C. Reagan-National
Tue 8/11
7:00 pm-10:10 pm
1 stop4h 10m
St. LouisWashington, D.C.
STL - DCA
STLDCA
Lambert-St Louis
Mon 8/10
10:10 am-6:00 pm
2 stops6h 50m
Washington, D.C. Reagan-National
Thu 8/13
6:00 am-9:30 am
1 stop4h 30m
| Provider | Price Accuracy | Trust Score* |
|---|---|---|
| Price Accuracy1 star | Trust Score*3 stars | |
| Price Accuracy3 stars | Trust Score*3 stars |
Currently, August is the cheapest month in which you can book a flight from St. Louis to Washington, D.C. (average of $67). Flying from St. Louis to Washington, D.C. in June is currently the most expensive (average of $180). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.
It’s typically best to fly out from St. Louis to Washington, D.C. in the afternoon. Doing so could potentially save you 37% on the flight price compared to flying at noon, which is usually more expensive.
The most flights from STL to WAS are scheduled on a Monday (14 on average). You will have fewer flight options on Saturday, which is when the least amount of flights are scheduled (7 on average).
Booking 86 days in advance of your planned departure date is, on average, the best time to get cheap flights from St. Louis to Washington, D.C.. The general trend is that the closer you book to the departure date, the more expensive your flight will be.
Travelers seeking maximum savings on their St. Louis to Washington, D.C. flight should consider departing on Wednesday evenings when fares are most often at their lowest. Saturday evenings flights should be avoided if possible as fares are typically the most expensive at this time.
Boarding
Crew
Entertainment
Food
Overall
Comfort
Reviews
Lauren,Dec 2024
MCI - DCA
Boarding
Crew
Entertainment
Food
Overall
Comfort
Reviews
Lauren,Dec 2024
MCI - DCA
Boarding
Crew
Entertainment
Food
Overall
Comfort
Reviews
Lauren,Dec 2024
MCI - DCA
Boarding
Crew
Entertainment
Food
Overall
Comfort
Reviews
Lauren,Dec 2024
MCI - DCA
Boarding
Crew
Entertainment
Food
Overall
Comfort
Reviews
Lauren,Dec 2024
MCI - DCA
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$90 | Average$214 | FlexibilityNo cancel fee | On-time62% | |
| Cheapest$98 | Average$313 | FlexibilityNo cancel fee | On-timeN/A | |
| Cheapest$197 | Average$348 | FlexibilityNo cancel fee | On-time71% | |
| Cheapest$199 | Average$396 | FlexibilityNo cancel fee | On-time63% | |
| Cheapest$271 | Average$467 | FlexibilityNo cancel fee | On-time69% |