Find Cheap Flights from Lambert-St Louis to Washington Reagan-National (STL - DCA)

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Fri 12/15
Fri 12/22
Any month
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Good to Know

Low Season:
February
Best time to beat the crowds
1%
expected price decrease
High Season:
August
Most popular time to fly
4%
expected price increase
Average Price:
$1347
(avg. price over the last 2 weeks)
Good Deal:
$1347
or less (round trip)

When to Book Flights from Lambert-St Louis to Washington Reagan-National

Average price per month
Flight prices as travel date approaches
-1 day
-2 days

Top tips for Finding a Cheap Flight

The cheapest flight from Lambert-St Louis to Washington Reagan-National was found 85 days before departure, on average.
Book at least 3 weeks before departure in order to get a below-average price.
High season is considered to be July, August and September. The cheapest month to fly is February.
Morning departure is around 16% more expensive than an evening flight, on average*.
*Average of the lowest prices shown in KAYAK’s search results for departures within the next 30 days

FAQs for Booking Lambert-St Louis to Washington Reagan-National Flights

How long does a flight from Lambert-St Louis to Washington Reagan-National take?
An average nonstop flight takes 1h 53m, covering a distance of 717 miles.
How many flights are there between Lambert-St Louis and Washington Reagan-National?
There are 129 (nonstop) flights between Lambert-St Louis and Washington Reagan-National per week, averaging 20 per day.
Which airlines provide the cheapest flights from Lambert-St Louis to Washington Reagan-National?
In the past 3 days, the cheapest round-trip tickets were found on American Airlines ($207), Delta ($282) and Multiple Airlines ($301).
Do I need a passport to fly between Lambert-St Louis and Washington Reagan-National?
No.
Which airlines fly most frequently between Lambert-St Louis and Washington Reagan-National?
American Airlines (10 times daily), Southwest (8 times daily) are the most frequent flyers on this route.
What’s the cheapest day of the week to fly Lambert-St Louis to Washington Reagan-National?
For Lambert-St Louis to Washington Reagan-National, Thursday is the cheapest day to fly on average and Monday is the most expensive. Flying from Washington Reagan-National back to Lambert-St Louis, the best deals are generally found on Thursday, with Friday being the most expensive.

Book cheap flights from Lambert-St Louis to Washington Reagan-National (round-trip)

Airports
Origin
St. Louis
$207
only
$207
Destination
Washington
$207
only
$207
Thu, Mar 1
STL
DCA
2h 29m
Mon, Mar 5
DCA
STL
2h 46m
Trip: 5 days
8.7ExcellentShow reviews
Overall 8.7 Excellent
Based on 9 reviews
Overall
7.3
Boarding
7.5
Comfort
7.1
Crew
7.8
Entertainment
6.7
Food
6.6
TUS
PHX
Mediocre 2.0

Nothing.

Everything.

HPN
DCA
Mediocre 2.0

Nothing

Comfort, timeliness.

AUS
CLT
Excellent 10.0

My Mom was very grateful for the friendly assistance as she is wheelchair bound and was flying aline. Excellent service!!

Nothing.

BOS
JFK
Good 6.0

No hassle of changing terminals in JFK, no bagagge claim, AA check-in-this time, was a "good luck"....Connection in Helsinki, very quik!

Finnair flight AY06 are old aircrafts. Every other in-seat monitor was out of order, flight attendants could not do much. That created mess for passengers, trying to move their seats to the ones with working monitors.....

GIG
JFK
Okay 4.6

Nice crew

I booked a LATAM flight for a 10.5 hour flight specifically because they have better in flight entertainment. I arrived at the airport and found it it was operated by AA. 10.5 hours with zero in flight entertainment. HORRIBLE EXPERIENCE.

Thu, May 3
STL
DCA
4h 51m
Sun, May 6
DCA
STL
3h 49m
Trip: 4 days
7.8GoodShow reviews
Overall 7.8 Good
Based on 14235 reviews
Overall
8.0
Boarding
8.1
Comfort
7.7
Crew
8.4
Entertainment
7.5
Food
7.3
SEA
LAX
Okay 5.3

Mu seat!

My baggage took for to long to arrive

JFK
YYZ
Excellent 10.0

The staff is very friendly. Most pleasant airline I've flown with.

ATL
DFW
Excellent 10.0

My entire flight experience was delightful. Was dry impressed with the staff both at Hartsfield-Jackson and DFW...and our flight crew was positively sublime.

IND
DTW
Okay 4.0

No wifi couldn’t do any work

Was looking forward to completing some work but the wifi never came on.

ZAG
CDG
Good 6.0

Old plane, bad food & old crew

Wed, Jun 27
STL
DCA
3h 19m
Wed, Jul 11
DCA
STL
2h 25m
Trip: 15 days
Overall 0.0 Poor
Based on 0 reviews
Tue, Mar 27
STL
DCA
2h 28m
Tue, May 8
DCA
STL
2h 33m
Trip: 43 days
8.7ExcellentShow reviews
Overall 8.7 Excellent
Based on 9 reviews
Overall
7.3
Boarding
7.5
Comfort
7.1
Crew
7.8
Entertainment
6.7
Food
6.6
DFW
LAX
Excellent 8.3

I liked the expediency of being rescheduled for another flight and the kindness of the American Airlines staff. When I first received my boarding pass, the pass listed gate A24 as the one where my flight was scheduled to depart. The plane destined to depart from Dallas to LAX did not show up. However, a few of us were kindly offered a cot and blankets to sleep on. The next morning I folded the cot and the blankets and found an American Airline staff member who swiftly rescheduled me for another flight to LAX. She did state that the original flight had departed at 11:15 p.m.

From around 6 P.M., December 11, 2017, I was at gate A24 - the gate listed as the Departure gate for my return flight to Los Angeles. The last flight that left went to Saint Louis, I believe. There was never a flight to depart from Gate 24 to Los Angeles. I believe the gate may have been changed and for some reason, those who were at Gate 24 were not informed. Also, the travel instructions on the advertisement for scheduling the flight mentioned the ability to carry on luggage for no additional charge. When I received my boarding pass, it stated I was only allowed to carry on baggage that would fit underneath the seat and not in the overhead bin. I had to pay to check my baggage that I thought was free. In spite of the changes, the flight was a good flight. Thank you

JFK
MIA
Excellent 8.8

Almost everything. Only the food was lacking. I like their new planes. The outlet at the seat in coach. The magazine options at the seat as well. I did not look at the entertainment so I will not rate that. The crew was professional.

Just the food options. Ginger snaps was what was served for food and a beverage. I suppose this is what obtains on most airlines these days but can't I hope for something more like maybe a sandwich? AA has the opportunity to set themselves apart in this area.

GIG
JFK
Okay 4.6

Nice crew

I booked a LATAM flight for a 10.5 hour flight specifically because they have better in flight entertainment. I arrived at the airport and found it it was operated by AA. 10.5 hours with zero in flight entertainment. HORRIBLE EXPERIENCE.

STL
DCA
Excellent 10.0

All great.

ABQ
ORD
Excellent 8.0

everything fine

having to gate-check our hand luggage

Wed, Feb 21
STL
DCA
2h 28m
Thu, Feb 22
DCA
STL
4h 39m
Trip: 2 days
8.7ExcellentShow reviews
Overall 8.7 Excellent
Based on 9 reviews
Overall
7.3
Boarding
7.5
Comfort
7.1
Crew
7.8
Entertainment
6.7
Food
6.6
STL
DCA
Excellent 10.0

Plane took off and landed at the exact time Seats plenty a room .

MCO
MIA
Mediocre 2.0

Flight got canceled for over a week.

JFK
MIA
Excellent 8.8

Almost everything. Only the food was lacking. I like their new planes. The outlet at the seat in coach. The magazine options at the seat as well. I did not look at the entertainment so I will not rate that. The crew was professional.

Just the food options. Ginger snaps was what was served for food and a beverage. I suppose this is what obtains on most airlines these days but can't I hope for something more like maybe a sandwich? AA has the opportunity to set themselves apart in this area.

ABQ
ORD
Excellent 8.0

everything fine

having to gate-check our hand luggage

HPN
DCA
Mediocre 2.0

Nothing

Comfort, timeliness.

Wed, Jan 31
STL
DCA
2h 22m
Sun, Feb 4
DCA
STL
2h 26m
Trip: 5 days
8.7ExcellentShow reviews
Overall 8.7 Excellent
Based on 9 reviews
Overall
7.3
Boarding
7.5
Comfort
7.1
Crew
7.8
Entertainment
6.7
Food
6.6
GIG
JFK
Okay 4.6

Nice crew

I booked a LATAM flight for a 10.5 hour flight specifically because they have better in flight entertainment. I arrived at the airport and found it it was operated by AA. 10.5 hours with zero in flight entertainment. HORRIBLE EXPERIENCE.

JFK
MIA
Excellent 8.8

Almost everything. Only the food was lacking. I like their new planes. The outlet at the seat in coach. The magazine options at the seat as well. I did not look at the entertainment so I will not rate that. The crew was professional.

Just the food options. Ginger snaps was what was served for food and a beverage. I suppose this is what obtains on most airlines these days but can't I hope for something more like maybe a sandwich? AA has the opportunity to set themselves apart in this area.

STL
DCA
Excellent 10.0

Plane took off and landed at the exact time Seats plenty a room .

DFW
LAX
Excellent 8.3

I liked the expediency of being rescheduled for another flight and the kindness of the American Airlines staff. When I first received my boarding pass, the pass listed gate A24 as the one where my flight was scheduled to depart. The plane destined to depart from Dallas to LAX did not show up. However, a few of us were kindly offered a cot and blankets to sleep on. The next morning I folded the cot and the blankets and found an American Airline staff member who swiftly rescheduled me for another flight to LAX. She did state that the original flight had departed at 11:15 p.m.

From around 6 P.M., December 11, 2017, I was at gate A24 - the gate listed as the Departure gate for my return flight to Los Angeles. The last flight that left went to Saint Louis, I believe. There was never a flight to depart from Gate 24 to Los Angeles. I believe the gate may have been changed and for some reason, those who were at Gate 24 were not informed. Also, the travel instructions on the advertisement for scheduling the flight mentioned the ability to carry on luggage for no additional charge. When I received my boarding pass, it stated I was only allowed to carry on baggage that would fit underneath the seat and not in the overhead bin. I had to pay to check my baggage that I thought was free. In spite of the changes, the flight was a good flight. Thank you

TPA
ORD
Excellent 8.0

Average. Expectation for US airlines are so low this flight score average.

Sat, Dec 23
STL
DCA
2h 01m
Sat, Jan 6
DCA
STL
2h 43m
Trip: 15 days
8.7ExcellentShow reviews
Overall 8.7 Excellent
Based on 9 reviews
Overall
7.3
Boarding
7.5
Comfort
7.1
Crew
7.8
Entertainment
6.7
Food
6.6
JFK
MIA
Excellent 8.8

Almost everything. Only the food was lacking. I like their new planes. The outlet at the seat in coach. The magazine options at the seat as well. I did not look at the entertainment so I will not rate that. The crew was professional.

Just the food options. Ginger snaps was what was served for food and a beverage. I suppose this is what obtains on most airlines these days but can't I hope for something more like maybe a sandwich? AA has the opportunity to set themselves apart in this area.

BOS
JFK
Good 6.0

No hassle of changing terminals in JFK, no bagagge claim, AA check-in-this time, was a "good luck"....Connection in Helsinki, very quik!

Finnair flight AY06 are old aircrafts. Every other in-seat monitor was out of order, flight attendants could not do much. That created mess for passengers, trying to move their seats to the ones with working monitors.....

TPA
ORD
Excellent 8.0

Average. Expectation for US airlines are so low this flight score average.

STL
DCA
Excellent 10.0

All great.

STL
DCA
Excellent 10.0

Plane took off and landed at the exact time Seats plenty a room .

Fri, Dec 29
STL
DCA
2h 18m
Mon, Jan 1
DCA
STL
4h 01m
Trip: 4 days
8.7ExcellentShow reviews
Overall 8.7 Excellent
Based on 9 reviews
Overall
7.3
Boarding
7.5
Comfort
7.1
Crew
7.8
Entertainment
6.7
Food
6.6
AUS
CLT
Excellent 10.0

My Mom was very grateful for the friendly assistance as she is wheelchair bound and was flying aline. Excellent service!!

Nothing.

GIG
JFK
Okay 4.6

Nice crew

I booked a LATAM flight for a 10.5 hour flight specifically because they have better in flight entertainment. I arrived at the airport and found it it was operated by AA. 10.5 hours with zero in flight entertainment. HORRIBLE EXPERIENCE.

BOS
JFK
Good 6.0

No hassle of changing terminals in JFK, no bagagge claim, AA check-in-this time, was a "good luck"....Connection in Helsinki, very quik!

Finnair flight AY06 are old aircrafts. Every other in-seat monitor was out of order, flight attendants could not do much. That created mess for passengers, trying to move their seats to the ones with working monitors.....

TPA
ORD
Excellent 8.0

Average. Expectation for US airlines are so low this flight score average.

STL
DCA
Excellent 10.0

All great.

Thu, Jun 28
STL
DCA
1h 53m
Thu, Jul 5
DCA
STL
2h 25m
Trip: 8 days
8.7ExcellentShow reviews
Overall 8.7 Excellent
Based on 9 reviews
Overall
7.3
Boarding
7.5
Comfort
7.1
Crew
7.8
Entertainment
6.7
Food
6.6
TUS
PHX
Mediocre 2.0

Nothing.

Everything.

MCO
MIA
Mediocre 2.0

Flight got canceled for over a week.

DFW
LAX
Excellent 8.3

I liked the expediency of being rescheduled for another flight and the kindness of the American Airlines staff. When I first received my boarding pass, the pass listed gate A24 as the one where my flight was scheduled to depart. The plane destined to depart from Dallas to LAX did not show up. However, a few of us were kindly offered a cot and blankets to sleep on. The next morning I folded the cot and the blankets and found an American Airline staff member who swiftly rescheduled me for another flight to LAX. She did state that the original flight had departed at 11:15 p.m.

From around 6 P.M., December 11, 2017, I was at gate A24 - the gate listed as the Departure gate for my return flight to Los Angeles. The last flight that left went to Saint Louis, I believe. There was never a flight to depart from Gate 24 to Los Angeles. I believe the gate may have been changed and for some reason, those who were at Gate 24 were not informed. Also, the travel instructions on the advertisement for scheduling the flight mentioned the ability to carry on luggage for no additional charge. When I received my boarding pass, it stated I was only allowed to carry on baggage that would fit underneath the seat and not in the overhead bin. I had to pay to check my baggage that I thought was free. In spite of the changes, the flight was a good flight. Thank you

ABQ
ORD
Excellent 8.0

everything fine

having to gate-check our hand luggage

BOS
JFK
Good 6.0

No hassle of changing terminals in JFK, no bagagge claim, AA check-in-this time, was a "good luck"....Connection in Helsinki, very quik!

Finnair flight AY06 are old aircrafts. Every other in-seat monitor was out of order, flight attendants could not do much. That created mess for passengers, trying to move their seats to the ones with working monitors.....

Fri, May 11
STL
DCA
4h 12m
Sun, May 13
DCA
STL
2h 25m
Trip: 3 days
8.7ExcellentShow reviews
Overall 8.7 Excellent
Based on 9 reviews
Overall
7.3
Boarding
7.5
Comfort
7.1
Crew
7.8
Entertainment
6.7
Food
6.6
JFK
MIA
Excellent 8.8

Almost everything. Only the food was lacking. I like their new planes. The outlet at the seat in coach. The magazine options at the seat as well. I did not look at the entertainment so I will not rate that. The crew was professional.

Just the food options. Ginger snaps was what was served for food and a beverage. I suppose this is what obtains on most airlines these days but can't I hope for something more like maybe a sandwich? AA has the opportunity to set themselves apart in this area.

BOS
JFK
Good 6.0

No hassle of changing terminals in JFK, no bagagge claim, AA check-in-this time, was a "good luck"....Connection in Helsinki, very quik!

Finnair flight AY06 are old aircrafts. Every other in-seat monitor was out of order, flight attendants could not do much. That created mess for passengers, trying to move their seats to the ones with working monitors.....

DFW
LAX
Excellent 8.3

I liked the expediency of being rescheduled for another flight and the kindness of the American Airlines staff. When I first received my boarding pass, the pass listed gate A24 as the one where my flight was scheduled to depart. The plane destined to depart from Dallas to LAX did not show up. However, a few of us were kindly offered a cot and blankets to sleep on. The next morning I folded the cot and the blankets and found an American Airline staff member who swiftly rescheduled me for another flight to LAX. She did state that the original flight had departed at 11:15 p.m.

From around 6 P.M., December 11, 2017, I was at gate A24 - the gate listed as the Departure gate for my return flight to Los Angeles. The last flight that left went to Saint Louis, I believe. There was never a flight to depart from Gate 24 to Los Angeles. I believe the gate may have been changed and for some reason, those who were at Gate 24 were not informed. Also, the travel instructions on the advertisement for scheduling the flight mentioned the ability to carry on luggage for no additional charge. When I received my boarding pass, it stated I was only allowed to carry on baggage that would fit underneath the seat and not in the overhead bin. I had to pay to check my baggage that I thought was free. In spite of the changes, the flight was a good flight. Thank you

AUS
CLT
Excellent 10.0

My Mom was very grateful for the friendly assistance as she is wheelchair bound and was flying aline. Excellent service!!

Nothing.

HPN
DCA
Mediocre 2.0

Nothing

Comfort, timeliness.

Fri, Apr 6
STL
DCA
2h 01m
Sun, Apr 8
DCA
STL
4h 02m
Trip: 3 days
8.7ExcellentShow reviews
Overall 8.7 Excellent
Based on 9 reviews
Overall
7.3
Boarding
7.5
Comfort
7.1
Crew
7.8
Entertainment
6.7
Food
6.6
STL
DCA
Excellent 10.0

Plane took off and landed at the exact time Seats plenty a room .

AUS
CLT
Excellent 10.0

My Mom was very grateful for the friendly assistance as she is wheelchair bound and was flying aline. Excellent service!!

Nothing.

STL
DCA
Excellent 10.0

All great.

TUS
PHX
Mediocre 2.0

Nothing.

Everything.

MCO
MIA
Mediocre 2.0

Flight got canceled for over a week.

Mon, Dec 18
STL
DCA
1h 59m
Wed, Dec 20
DCA
STL
2h 43m
Trip: 3 days
8.7ExcellentShow reviews
Overall 8.7 Excellent
Based on 9 reviews
Overall
7.3
Boarding
7.5
Comfort
7.1
Crew
7.8
Entertainment
6.7
Food
6.6
ABQ
ORD
Excellent 8.0

everything fine

having to gate-check our hand luggage

STL
DCA
Excellent 10.0

Plane took off and landed at the exact time Seats plenty a room .

AUS
CLT
Excellent 10.0

My Mom was very grateful for the friendly assistance as she is wheelchair bound and was flying aline. Excellent service!!

Nothing.

JFK
MIA
Excellent 8.8

Almost everything. Only the food was lacking. I like their new planes. The outlet at the seat in coach. The magazine options at the seat as well. I did not look at the entertainment so I will not rate that. The crew was professional.

Just the food options. Ginger snaps was what was served for food and a beverage. I suppose this is what obtains on most airlines these days but can't I hope for something more like maybe a sandwich? AA has the opportunity to set themselves apart in this area.

MCO
MIA
Mediocre 2.0

Flight got canceled for over a week.

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