Direct flights from St Louis to Washington

Did you mean Flights from Washington to St Louis?

St Louis

United States

STL

Lambert St Louis International Airport

Washington

United States

DCA

Ronald Reagan Washington National Airport

Route: Nonstop service available
Distance: 717 miles
Marketing airlines: 2 airlines
Aircraft: 7 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 STL → DCA, 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.

STL → DCAEconomy
AA4508
4,500 points+ $25.00
Departure
2026-10-27
Seats seen
9
Book with
Alaska Atmos Rewards
Observed (UTC)
2026-10-21 17:57
STL → DCAEconomy
AA4678
4,500 points+ $25.00
Departure
2026-10-31
Seats seen
9
Book with
Alaska Atmos Rewards
Observed (UTC)
2026-10-21 20:34
STL → DCAEconomy
AA4769
4,500 points+ $25.00
Departure
2026-11-02
Seats seen
9
Book with
Alaska Atmos Rewards
Observed (UTC)
2026-10-22 02:26
STL → DCAEconomy
AA4703
4,500 points+ $25.00
Departure
2026-11-02
Seats seen
9
Book with
Alaska Atmos Rewards
Observed (UTC)
2026-10-22 02:26
STL → DCAEconomy
AA4458
4,500 points+ $25.00
Departure
2026-11-02
Seats seen
6
Book with
Alaska Atmos Rewards
Observed (UTC)
2026-10-22 02:26
STL → DCAEconomy
AA4703
4,500 points+ $25.00
Departure
2026-11-04
Seats seen
9
Book with
Alaska Atmos Rewards
Observed (UTC)
2026-10-22 13:23
STL → DCAEconomy
AA4769
4,500 points+ $25.00
Departure
2026-11-04
Seats seen
9
Book with
Alaska Atmos Rewards
Observed (UTC)
2026-10-22 13:23
STL → DCAEconomy
AA4458
4,500 points+ $25.00
Departure
2026-11-04
Seats seen
4
Book with
Alaska Atmos Rewards
Observed (UTC)
2026-10-22 13:23
STL → DCAEconomy
AA4703
4,500 points+ $25.00
Departure
2026-11-07
Seats seen
9
Book with
Alaska Atmos Rewards
Observed (UTC)
2026-10-21 23:28
STL → DCAEconomy
AA4703
4,500 points+ $25.00
Departure
2026-11-12
Seats seen
9
Book with
Alaska Atmos Rewards
Observed (UTC)
2026-10-21 10:32
STL → DCAEconomy
AA4458
4,500 points+ $25.00
Departure
2026-11-17
Seats seen
4
Book with
Alaska Atmos Rewards
Observed (UTC)
2026-10-23 02:53
STL → DCAEconomy
AA4703
4,500 points+ $25.00
Departure
2026-11-17
Seats seen
9
Book with
Alaska Atmos Rewards
Observed (UTC)
2026-10-23 02:53

St Louis to Washington route overview

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

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

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

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 St Louis to Washington 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 STL to DCA

Frequently asked questions

Which airports serve the St Louis to Washington route?

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

How far is Washington from St Louis?

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

Are there direct flights from STL to DCA?

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

Which airlines market flights from STL to DCA?

Which aircraft fly from STL to DCA?

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) and Embraer 175 (short wing) (E75).