Question 1

Which is the best airline for flights from St. Louis to Washington, D.C., Southwest or United Airlines?

Accepted Answer

The two airlines most popular with KAYAK users for flights from St. Louis to Washington, D.C. are Southwest and United Airlines. With an average price for the route of $360 and an overall rating of 8.0, Southwest is the most popular choice. United Airlines is also a great choice for the route, with an average price of $424 and an overall rating of 7.4.

Question 2

How long does a flight from St. Louis to Washington, D.C. take?

Accepted Answer

The average nonstop flight takes 1h 55m, covering a distance of 717 miles.

Question 3

How many flights are there between St. Louis and Washington, D.C. per day?

Accepted Answer

Each day, there are between 11 and 13 nonstop flights that take off from St. Louis and land in Washington, D.C., with an average flight time of 2h 05m. The most common departure time is 8:00 am and most flights take off in the morning, while the most flights land at Washington, D.C. Reagan-National Airport. Each week, there are 89 flights. The most frequent day of departure is Monday, when 15% of all weekly flights depart. The fewest flights depart on a Saturday.

Question 4

How many flights are there between St. Louis and Washington, D.C. per day?

Accepted Answer

Each day, there are between 11 and 13 nonstop flights that take off from St. Louis and land in Washington, D.C., with an average flight time of 2h 05m. The most common departure time is 8:00 am and most flights take off in the morning, while the most flights land at Washington, D.C. Reagan-National Airport. Each week, there are 89 flights. The most frequent day of departure is Monday, when 15% of all weekly flights depart. The fewest flights depart on a Saturday.

Question 5

What is the cheapest flight from St. Louis to Washington, D.C.?

Accepted Answer

In the last 5 days, the lowest price for a flight from St. Louis to Washington, D.C. was $50 for a one-way ticket and $128 for a round-trip.

Question 6

Do I need a passport to fly between St. Louis and Washington, D.C.?

Accepted Answer

No

Question 7

Which airlines fly most frequently between St. Louis and Washington, D.C.?

Accepted Answer

St. Louis and Washington, D.C. are connected by different airlines. The airlines that fly that route the most regularly are Southwest (57 flights per week), American Airlines (18 flights per week), and United Airlines (14 flights per week).

Question 8

Which airlines fly most frequently between St. Louis and Washington, D.C.?

Accepted Answer

St. Louis and Washington, D.C. are connected by different airlines. The airlines that fly that route the most regularly are Southwest (57 flights per week), American Airlines (18 flights per week), and United Airlines (14 flights per week).

Question 9

What’s the cheapest day of the week to fly from St. Louis to Washington, D.C.?

Accepted Answer

For St. Louis to Washington, D.C., Wednesday is the cheapest day to fly on average and Thursday is the most expensive. Flying from Washington, D.C. back to St. Louis, the best deals are generally found on Saturday, with Monday being the most expensive.

Question 10

What’s the cheapest day of the week to fly from St. Louis to Washington, D.C.?

Accepted Answer

For St. Louis to Washington, D.C., Wednesday is the cheapest day to fly on average and Thursday is the most expensive. Flying from Washington, D.C. back to St. Louis, the best deals are generally found on Saturday, with Monday being the most expensive.

Question 11

Which airports will I be using when flying from St. Louis to Washington, D.C.?

Accepted Answer

On your way to Washington, D.C., you’ll fly out from Lambert-St Louis. You’ll be landing in one of Washington, D.C.’s 2 airports: Washington, D.C. Reagan-National or Washington, D.C. Dulles Intl.

Question 12

What’s the earliest departure time from St. Louis to Washington, D.C.?

Accepted Answer

Early birds can take the earliest flight from St. Louis at 5:12 am and will be landing in Washington, D.C. at 8:22 am.

Question 13

What’s the latest departure time from St. Louis to Washington, D.C.?

Accepted Answer

If you prefer to fly at night, the latest flight from St. Louis to Washington, D.C. jets off at 8:45 pm and lands at 11:45 pm.

Question 14

Which airlines fly non-stop between St. Louis and Washington, D.C.?

Accepted Answer

There are 3 airlines that fly nonstop from St. Louis to Washington, D.C.. They are: American Airlines, Southwest and United Airlines. The cheapest price of all airlines flying this route was found with American Airlines at $197 for a round-trip flight. On average, the best prices for this route can be found at American Airlines.

Question 15

Which airlines fly non-stop between St. Louis and Washington, D.C.?

Accepted Answer

There are 3 airlines that fly nonstop from St. Louis to Washington, D.C.. They are: American Airlines, Southwest and United Airlines. The cheapest price of all airlines flying this route was found with American Airlines at $197 for a round-trip flight. On average, the best prices for this route can be found at American Airlines.

Question 16

Which airlines offer Wi-Fi service onboard planes from St. Louis to Washington, D.C.?

Accepted Answer

American Airlines, Alaska Airlines, Lufthansa, Delta, and JetBlue offer inflight Wi-Fi service on the St. Louis to Washington, D.C. flight route.

Question 17

Which aircraft models fly most regularly from St. Louis to Washington, D.C.?

Accepted Answer

The Boeing 737 MAX 8 is the aircraft model that flies most regularly on the St. Louis to Washington, D.C. flight route.

Question 18

Which airline alliances offer flights from St. Louis to Washington, D.C.?

Accepted Answer

SkyTeam, Star Alliance, and oneworld are the airline alliances operating flights between St. Louis and Washington, D.C., with SkyTeam being the most commonly used for this route.

Question 19

On which days can I fly direct from St. Louis to Washington, D.C.?

Accepted Answer

There are nonstop flights from St. Louis to Washington, D.C. on a daily basis.

Question 20

What is the cheapest month to fly from St. Louis to Washington, D.C.?

Accepted Answer

The cheapest month for flights from St. Louis to Washington, D.C. is October, where tickets cost $309 (return) on average. On the other hand, the most expensive months are February and June, where the average cost of round-trip tickets is $432 and $403 respectively.

Question 21

What is the cheapest month to fly from St. Louis to Washington, D.C.?

Accepted Answer

The cheapest month for flights from St. Louis to Washington, D.C. is October, where tickets cost $309 (return) on average. On the other hand, the most expensive months are February and June, where the average cost of round-trip tickets is $432 and $403 respectively.

Question 22

How does KAYAK find such low prices on flights from St. Louis to Washington, D.C.?

Accepted Answer

KAYAK is a travel search engine. That means we look across the web to find the best prices we can find for our users. With over 2 billion flight queries processed yearly, we are able to display a variety of prices and options on flights from St. Louis to Washington, D.C..

Question 23

How does KAYAK's flight Price Forecast tool help me choose the right time to buy my flight ticket from St. Louis to Washington, D.C.?

Accepted Answer

KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to Washington, D.C. from St. Louis is likely to change within 7 days, so travelers know whether to wait or book now.

Question 24

What is the Hacker Fare option on flights from St. Louis to Washington, D.C.?

Accepted Answer

Hacker Fares allow you to combine one-way tickets in order to save you money over a traditional round-trip ticket. You could then fly to Washington, D.C. with an airline and back to St. Louis with another airline.

Question 25

What is KAYAK's "flexible dates" feature and why should I care when looking for a flight from St. Louis to Washington, D.C.?

Accepted Answer

Sometimes travel dates aren't set in stone. If your preferred travel dates have some wiggle room, flexible dates will show you all the options when flying to Washington, D.C. from St. Louis up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

Question 26

What is the cheapest layover airport when flying from St. Louis to Washington, D.C.?

Accepted Answer

Flights via Denver (DEN) offer the most affordable fares, with an average round-trip price of $169.

Question 27

What is the most popular layover airport when flying from St. Louis to Washington, D.C.?

Accepted Answer

Atlanta (ATL) is the top choice – 50% of KAYAK users who clicked on 1-stop flights from St. Louis to Washington, D.C. picked an itinerary connecting there.

Question 28

Which layover airport has the quickest connection when flying from St. Louis to Washington, D.C.?

Accepted Answer

If you prefer a quick connection, Detroit (DTW) often has the shortest layovers from St. Louis to Washington, D.C., with an average of 0h 50m.

Question 29

Which layover airport offers the shortest total travel time from St. Louis to Washington, D.C.?

Accepted Answer

Consider flying via Detroit (DTW) for the shortest journey. The average one-way travel time for flights connecting there is 3h 59m.

Question 30

Which cabin class options are there for flights between St. Louis and Washington, D.C.?

Accepted Answer

There are 4 cabin class options for the route. These are First, Business, Economy and Prem Economy. Perform a search on KAYAK to find the latest prices and availability for all cabin fares, which differ across airlines.

Question 31

Which cabin class options are there for flights between St. Louis and Washington, D.C.?

Accepted Answer

There are 4 cabin class options for the route. These are First, Business, Economy and Prem Economy. Perform a search on KAYAK to find the latest prices and availability for all cabin fares, which differ across airlines.

Question 32

Which airlines provide the cheapest flights from St. Louis to Washington, D.C.?

Accepted Answer

In the past 5 days, the cheapest round-trip tickets from St. Louis to Washington, D.C. were found on Frontier ($128) and American Airlines ($272).

Question 33

Which airlines provide the cheapest flights from St. Louis to Washington, D.C.?

Accepted Answer

In the past 5 days, the cheapest round-trip tickets from St. Louis to Washington, D.C. were found on Frontier ($128) and American Airlines ($272).

Question 34

What is the cheapest St. Louis to Washington, D.C. flight route?

Accepted Answer

The cheapest return flight from St. Louis to Washington, D.C. costs $258 on the route between St. Louis (STL) and Washington, D.C. Reagan-National Airport (DCA). Over the past month, this route was, on average, 15% cheaper than other St. Louis-Washington, D.C. routes. It is also the most popular route.

Question 35

What is the cheapest St. Louis to Washington, D.C. flight route?

Accepted Answer

The cheapest return flight from St. Louis to Washington, D.C. costs $258 on the route between St. Louis (STL) and Washington, D.C. Reagan-National Airport (DCA). Over the past month, this route was, on average, 15% cheaper than other St. Louis-Washington, D.C. routes. It is also the most popular route.

Question 36

Can I save money by flying with a layover from St. Louis to Washington, D.C.?

Accepted Answer

Yes, flying with a layover may cost you more time, but you can also save money on the route, with a 1 stop layover the cheapest option at $383 on average.

Question 37

Can I save money by flying with a layover from St. Louis to Washington, D.C.?

Accepted Answer

Yes, flying with a layover may cost you more time, but you can also save money on the route, with a 1 stop layover the cheapest option at $383 on average.

Question 38

How much is a round-trip flight from St. Louis to Washington, D.C.?

Accepted Answer

Flight prices are below average for this route right now.Flights to Washington, D.C. from St. Louis usually cost between $270 and $410 in September.
The lowest price found in the past 5 days was $128 on Frontier (Sep 23-Sep 26).

Question 39

What are the most popular airlines flying to Washington, D.C.?

Accepted Answer

The most popular airline among KAYAK users flying to Washington, D.C. is Southwest, followed by American Airlines and United Airlines.

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STL - WAS

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Cheap Flights from St. Louis to Washington, D.C. (STL-WAS)

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KAYAK's insights & trends for St. Louis to Washington, D.C. flights

How much is a round-trip flight from St. Louis to Washington, D.C.?

What is the cheapest St. Louis to Washington, D.C. flight route?

What’s the cheapest day of the week to fly from St. Louis to Washington, D.C.?

What is the cheapest month to fly from St. Louis to Washington, D.C.?

Can I save money by flying with a layover from St. Louis to Washington, D.C.?

Which airlines provide the cheapest flights from St. Louis to Washington, D.C.?

Which airlines fly most frequently between St. Louis and Washington, D.C.?

Which airlines fly non-stop between St. Louis and Washington, D.C.?

What is the most popular layover airport when flying from St. Louis to Washington, D.C.?

What is the cheapest layover airport when flying from St. Louis to Washington, D.C.?

Which layover airport offers the shortest total travel time from St. Louis to Washington, D.C.?

Which layover airport has the quickest connection when flying from St. Louis to Washington, D.C.?

Which cabin class options are there for flights between St. Louis and Washington, D.C.?

How many flights are there between St. Louis and Washington, D.C. per day?

How long does a flight from St. Louis to Washington, D.C. take?

What’s the earliest departure time from St. Louis to Washington, D.C.?

What’s the latest departure time from St. Louis to Washington, D.C.?

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