For a stress-free departure from DCA, use the Metro's Yellow or Blue lines for easy access. It's affordable and avoids traffic hassles.
Most accurate provider | FlightHub 3 stars |
---|---|
Most trusted provider | eDreams 3 stars |
Round-trip from | $191 (CheapOair) |
One-way from | $89 (Frontier) |
Popular in | March |
Cheapest in | August |
Average price | $337 |
Good round-trip deal | $271 or less |
Good one-way deal | $133 or less |
Fly from
Fly to
Route
Depart
Return
Price
BaltimoreSt. Louis
BWI - STL
BWISTL
Baltimore/Washington
Sat 4/26
9:12 pm-12:04 am
1 stop27h 52m
Lambert-St Louis
Tue 4/29
5:41 pm-2:41 pm
1 stop20h 00m
BaltimoreSt. Louis
BWI - STL
BWISTL
Baltimore/Washington
Sat 5/10
9:21 pm-12:06 am
1 stop27h 45m
Lambert-St Louis
Sat 5/17
10:10 am-5:26 pm
1 stop6h 16m
Washington, D.C.St. Louis
IAD - STL
IADSTL
Washington, D.C. Dulles Intl
Fri 5/16
5:26 pm-12:14 am
1 stop7h 48m
Lambert-St Louis
Sun 5/18
5:45 pm-4:36 pm
1 stop21h 51m
Washington, D.C.St. Louis
DCA - STL
DCASTL
Washington, D.C. Reagan-National
Thu 5/1
7:00 am-3:07 pm
1 stop9h 07m
Lambert-St Louis
Sat 5/3
8:15 pm-12:07 pm
1 stop14h 52m
Washington, D.C.St. Louis
DCA - STL
DCASTL
Washington, D.C. Reagan-National
Thu 5/29
3:00 pm-4:15 pm
Nonstop2h 15m
Lambert-St Louis
Tue 6/3
5:00 pm-11:40 pm
1 stop5h 40m
Washington, D.C.St. Louis
DCA - STL
DCASTL
Washington, D.C. Reagan-National
Thu 5/29
1:54 pm-3:11 pm
Nonstop2h 17m
Lambert-St Louis
Fri 5/30
6:00 am-11:49 am
1 stop4h 49m
Washington, D.C.St. Louis
IAD - STL
IADSTL
Washington, D.C. Dulles Intl
Thu 5/29
6:00 am-9:35 am
1 stop4h 35m
Lambert-St Louis
Tue 6/3
6:00 am-11:58 am
1 stop4h 58m
Washington, D.C.St. Louis
DCA - STL
DCASTL
Washington, D.C. Reagan-National
Thu 5/29
7:59 am-12:04 pm
1 stop5h 05m
Lambert-St Louis
Tue 6/3
2:15 pm-6:59 pm
1 stop3h 44m
BaltimoreSt. Louis
BWI - STL
BWISTL
Baltimore/Washington
Thu 6/19
2:08 pm-5:04 pm
1 stop3h 56m
Lambert-St Louis
Sun 6/22
6:12 pm-7:04 am
1 stop11h 52m
Washington, D.C.St. Louis
IAD - STL
IADSTL
Washington, D.C. Dulles Intl
Wed 6/4
3:40 pm-9:25 pm
1 stop6h 45m
Lambert-St Louis
Tue 6/10
8:15 am-11:23 am
Nonstop2h 08m
Provider | Price Accuracy | Trust Score* |
---|---|---|
Price Accuracy1 star | Trust Score*3 stars | |
Price Accuracy3 stars | Trust Score*2 stars | |
Price Accuracy3 stars | Trust Score*3 stars | |
Price Accuracy- | Trust Score*3 stars |
To ensure you get the cheapest price possible for a flight from Washington, D.C. to St. Louis, you should look to book at least 58 days in advance of your intended travel date. The price of your flight may increase if you delay and leave booking until a week or so before departure.
Currently, August is the cheapest month in which you can book a flight from Washington, D.C. to St. Louis (average of $311). Flying from Washington, D.C. to St. Louis in March is currently the most expensive (average of $356). 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 optimal to fly from Washington, D.C. to St. Louis at noon. By choosing this option you can save up to 21% on the cost of your flight, compared to a flight in the morning.
Travelers seeking maximum savings on their Washington, D.C. to St. Louis flight should consider departing on Saturday at noon when fares are most often at their lowest. Saturday mornings flights should be avoided if possible as fares are typically the most expensive at this time.
The most flights from WAS to STL are scheduled on a Monday (16 on average). You will have fewer flight options on Saturday, which is when the least amount of flights are scheduled (10 on average).
In terms of precipitation, rainfall in St. Louis ranges from 2.2 - 4.7 inches per month. May is typically the wettest month, when rainfall can reach 4.7 in. February is typically the driest time to visit St. Louis when rainfall is around 2.2 in.
If weather is an important factor for your trip to St. Louis, use this chart to help with planning. For those seeking warmer temperatures, July is the ideal time of year to visit, when temperatures reach an average of 80.6 F. Travelers looking to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 32.0 F).
Food
Crew
Comfort
Boarding
Entertainment
Overall
Reviews
Anonymous,Apr 2025
LAS - STS
Food
Crew
Comfort
Boarding
Entertainment
Overall
Reviews
Anonymous,Apr 2025
LAS - STS
Food
Crew
Comfort
Boarding
Entertainment
Overall
Reviews
Anonymous,Apr 2025
LAS - STS
Food
Crew
Comfort
Boarding
Entertainment
Overall
Reviews
Anonymous,Apr 2025
LAS - STS
Food
Crew
Comfort
Boarding
Entertainment
Overall
Reviews
Anonymous,Apr 2025
LAS - STS
Food
Crew
Comfort
Boarding
Entertainment
Overall
Reviews
Anonymous,Apr 2025
LAS - STS
Airline | Cheapest | Average | Flexibility | On-time |
---|---|---|---|---|
Cheapest$108 | Average$215 | FlexibilityNo cancel fee | On-time62% | |
Cheapest$168 | Average$352 | FlexibilityNo cancel fee | On-time71% | |
Cheapest$176 | Average$318 | FlexibilityNo cancel fee | On-timeN/A | |
Cheapest$197 | Average$354 | FlexibilityNo cancel fee | On-time63% | |
Cheapest$223 | Average$454 | FlexibilityNo cancel fee | On-time69% |