Direct flights from Washington to St Louis

Did you mean Flights from St Louis to Washington?

Washington

United States

DCA

Ronald Reagan Washington National Airport

St Louis

United States

STL

Lambert St Louis International Airport

Route: Nonstop service available
Distance: 717 miles
Marketing airlines: 2 airlines
Aircraft: 8 aircraft types
Dates: Oct 19, 2026 – Oct 10, 2027

Observed award fares

A sample of one-way prices for one traveler from Roame’s fare cache. Points, fees, and seats describe the same observation. Availability can change; confirm with the loyalty program before transferring points.

Lowest price in this limited sample: 4,500 points + $25.00 for DCA → STL, Economy, on 2026-10-27, booked with Alaska Atmos Rewards. This is an observed fare, not a guaranteed price or the lowest price across all dates and programs.

Departure window: 2026-10-23 – 2026-11-21.

DCA → STLEconomy
AA4508
4,500 points+ $25.00
Departure
2026-10-27
Seats seen
9
Book with
Alaska Atmos Rewards
Observed (UTC)
2026-10-21 05:24
DCA → STLEconomy
AA2030
4,500 points+ $25.00
Departure
2026-10-27
Seats seen
9
Book with
Alaska Atmos Rewards
Observed (UTC)
2026-10-21 05:24
DCA → STLEconomy
AA4645
4,500 points+ $25.00
Departure
2026-10-30
Seats seen
9
Book with
Alaska Atmos Rewards
Observed (UTC)
2026-10-21 20:51
DCA → STLEconomy
AA4536
4,500 points+ $25.00
Departure
2026-10-31
Seats seen
9
Book with
Alaska Atmos Rewards
Observed (UTC)
2026-10-23 00:06
DCA → STLEconomy
AA4664
4,500 points+ $25.00
Departure
2026-11-01
Seats seen
9
Book with
Alaska Atmos Rewards
Observed (UTC)
2026-10-21 15:57
DCA → STLEconomy
AA4664
4,500 points+ $25.00
Departure
2026-11-01
Seats seen
3
Book with
Alaska Atmos Rewards
Observed (UTC)
2026-10-22 22:47
DCA → STLEconomy
AA4458
4,500 points+ $25.00
Departure
2026-11-01
Seats seen
6
Book with
Alaska Atmos Rewards
Observed (UTC)
2026-10-22 22:47
DCA → STLEconomy
AA4458
4,500 points+ $25.00
Departure
2026-11-03
Seats seen
9
Book with
Alaska Atmos Rewards
Observed (UTC)
2026-10-22 06:04
DCA → STLEconomy
AA4769
4,500 points+ $25.00
Departure
2026-11-04
Seats seen
9
Book with
Alaska Atmos Rewards
Observed (UTC)
2026-10-21 08:57
DCA → STLEconomy
AA4458
4,500 points+ $25.00
Departure
2026-11-08
Seats seen
9
Book with
Alaska Atmos Rewards
Observed (UTC)
2026-10-21 09:23
DCA → STLEconomy
AA4458
4,500 points+ $25.00
Departure
2026-11-12
Seats seen
9
Book with
Alaska Atmos Rewards
Observed (UTC)
2026-10-22 12:27
DCA → STLEconomy
AA4769
4,500 points+ $25.00
Departure
2026-11-19
Seats seen
5
Book with
Alaska Atmos Rewards
Observed (UTC)
2026-10-22 17:06

Washington to St Louis route overview

Ronald Reagan Washington National Airport (DCA) serves Washington; Lambert St Louis International Airport (STL) serves St Louis.

The airports are 717 miles apart by great-circle distance.

Roame's current schedule feed shows nonstop service from DCA to STL.

Marketing airlines listed in the current schedule, including codeshare sellers, are American Airlines (AA) and Southwest Airlines (WN). This list does not identify the operating airline for each flight; check the flight details before booking.

Published schedule dates span Oct 19, 2026 – Oct 10, 2027.

Marketing airlines on the Washington to St Louis route

These are marketing airlines, including codeshare sellers. This list does not identify the operating airline for each flight; check the flight details before booking.

Airline alliance affiliations represented: Oneworld

Aircraft flying from DCA to STL

Frequently asked questions

Which airports serve the Washington to St Louis route?

Ronald Reagan Washington National Airport (DCA) is the origin airport and Lambert St Louis International Airport (STL) is the destination airport.

How far is St Louis from Washington?

DCA and STL are approximately 717 miles apart by great-circle distance.

Are there direct flights from DCA to STL?

Yes. Roame's current schedule feed shows nonstop service from DCA to STL.

Which airlines market flights from DCA to STL?

Which aircraft fly from DCA to STL?

Aircraft listed in the current schedule include Airbus A319 (319), Boeing 737-800 Winglets (73H), Boeing 737 MAX 8 (7M8), 7S7, Canadair Regional Jet 700 | Regional Jet 550 (CR7), Canadair Regional Jet 900 (CR9), Embraer 175 (short wing) (E75) and JET.