Question 1

Which airlines offer extra legroom and free seat selection on Washington, D.C. to St. Louis flights?

Accepted Answer

Among airlines operating Washington, D.C. to St. Louis flights:

• Southwest: offers free seat selection
• American Airlines: offers extra legroom; offers free seat selection
• United Airlines: offers extra legroom; offers free seat selection

Extra legroom and free seat selection availability depends on fare class and route.

Question 2

What airlines fly from Washington, D.C. to St. Louis?

Accepted Answer

3 airlines operate flights between Washington, D.C. and St. Louis. The airlines offering nonstop flights on this route include:

• Southwest
• American Airlines
• United Airlines

Question 3

Which airports can I use when flying from Washington, D.C. to St. Louis?

Accepted Answer

Flights from Washington, D.C. to St. Louis may depart from several airports in Washington, D.C. area, including Washington, D.C. Reagan-National (DCA) and Washington, D.C. Dulles Intl (IAD). Flights usually arrive at Lambert-St Louis (STL).

Question 4

Which airlines include bags at no extra cost on Washington, D.C. to St. Louis flights?

Accepted Answer

Here are some options for this route, based on selected ticket types and cabin classes:

• Southwest: a cabin bag and a checked bag in Economy Class
• American Airlines: a cabin bag and a checked bag in Economy Class
• United Airlines: a cabin bag and a checked bag in Economy Class

Bag allowance can vary by ticket type, cabin class, route and airline, so always check the fare details before booking.

Question 5

What cabin classes can I book on flights from Washington, D.C. to St. Louis?

Accepted Answer

Two cabin classes are available on flights from Washington, D.C. to St. Louis:

• Economy Class
• First Class

Question 6

How much can I save by taking a layover when flying from Washington, D.C. to St. Louis?

Accepted Answer

On this route, layover flights are cheaper than nonstop options on average. Layover fares average $234 round-trip via Denver Intl (DEN), compared to $383 for nonstop.

Question 7

What is the standard checked-bag allowance on flights from Washington, D.C. to St. Louis?

Accepted Answer

There is no standard. Checked-bag policies vary by airline on this route. Most carriers charge $40–$100 for the first checked bag in economy. Premium fares and elite-status bookings typically include a free checked bag.

Question 8

Which airports do connecting flights from Washington, D.C. to St. Louis pass through?

Accepted Answer

One-stop flights from Washington, D.C. to St. Louis most commonly connect through:

• Atlanta Hartsfield-Jackson (ATL) - 42% of one-stop connections
• Chicago O'Hare Intl (ORD) - 23% of one-stop connections
• Denver Intl (DEN) - 13% of one-stop connections
• Charlotte Douglas (CLT) - 11% of one-stop connections

Question 9

Can I save money by using flexible dates for flights from Washington, D.C. to St. Louis?

Accepted Answer

Yes. Flexible dates can save you up to 26% on flights from Washington, D.C. to St. Louis. Wednesday is the cheapest departure day at $349 round-trip on average, while Monday is the most expensive at $466, a difference of $117.

KAYAK's flexible dates feature shows options up to 3 days before and after your selected dates, making it easier to compare nearby fares.

Question 10

How are flight departures from Washington, D.C. to St. Louis spread across the day?

Accepted Answer

Morning is the busiest departure period on Washington, D.C. to St. Louis flights, with 34% of flights leaving in that window. Afternoon departures account for 33%, evening flights for 33%, and night flights for 0%.

Question 11

What popular places can I visit in St. Louis?

Accepted Answer

Some of the most popular sights in St. Louis are Busch Stadium, Enterprise Center and America's Center Convention Complex. These are among the most viewed places in St. Louis on KAYAK.

Question 12

What are the earliest and latest flights from Washington, D.C. to St. Louis?

Accepted Answer

These are the earliest and latest flight times available from Washington, D.C. to St. Louis:

• Earliest: departs at 7:25 am and lands at 9:57 am
• Latest: departs at 8:03 pm and lands at 10:35 pm.

The flight takes about 2h 32m.

Question 13

How expensive are last-minute Washington, D.C. to St. Louis flights?

Accepted Answer

Last-minute fares on this route (booked within two weeks of departure) run 90% above the $381 route average. Book 22 weeks before departure for the lowest fares.

Question 14

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

Accepted Answer

A nonstop flight from Washington, D.C. to St. Louis takes 2h 32m, covering 717 miles.

Question 15

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

Accepted Answer

No, a passport is not required for this domestic route, but you will need a real ID-compliant driver's license, a state ID or another TSA-accepted form of identification.

Question 16

How are flight prices from Washington, D.C. to St. Louis looking right now?

Accepted Answer

One-way fares from Washington, D.C. to St. Louis are currently lower than usual. Average one-way flight prices are about $107, which is 55% below the typical average for this route.

Question 17

How much time can I save by choosing a different layover airport from Washington, D.C. to St. Louis?

Accepted Answer

Flying via Detroit Metropolitan Wayne County (DTW) gives the shortest average 1-stop total travel time at 4h 40m, compared with 4h 41m via Chicago Midway (MDW) and 5h 01m via Chicago O'Hare Intl (ORD).

Question 18

What is the time difference between Washington, D.C. and St. Louis?

Accepted Answer

St. Louis is 1 hour behind Washington, D.C. (Central Time vs Eastern Time). Plan for the time shift when scheduling connections or first-day activities.

Question 19

What car rental options are available at Lambert-St Louis Airport (STL)?

Accepted Answer

Lambert-St Louis Airport (STL) hosts 5 major car rental companies, with daily rates starting from around $31 for economy cars. Top options include:

• Hertz
• Budget
• Alamo
• Enterprise Rent-A-Car
• Payless

Question 20

How much should I expect to pay for a Washington, D.C. to St. Louis flight?

Accepted Answer

Round-trip flights from Washington, D.C. to St. Louis range from $304 to $544, with an average of $381 over the past 12 months. Anything below $304 counts as a good deal.

Question 21

Which airlines offer Wi-Fi on Washington, D.C. to St. Louis flights?

Accepted Answer

American Airlines is the only airline on the Washington, D.C. to St. Louis route offering in-flight Wi-Fi. Pricing depends on fare class.

Question 22

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

Accepted Answer

Round-trip flights from Washington, D.C. to St. Louis typically range from $304 to $544. The lowest price found in the past 5 days was $106, on Frontier.

Question 23

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

Accepted Answer

Washington, D.C. Reagan-National Airport (DCA) to St. Louis (STL) is the cheapest Washington, D.C. to St. Louis route, averaging $363 round-trip. Other Washington, D.C. to St. Louis routes average $458, based on KAYAK data over the past 12 months.

Question 24

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

Accepted Answer

Based on deals KAYAK users found in the last 12 months, Wednesday is the cheapest day of the week to fly from Washington, D.C. to St. Louis. It’s 9% cheaper than the average day, while Monday is the most expensive, with prices 22% higher.

Question 25

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

Accepted Answer

•August is the cheapest month to fly from Washington, D.C. to St. Louis at $325 round-trip.
•March ($459) and July ($433) are the most expensive months.
•The price difference between flying in the cheapest and most expensive months is 41% on average.
This is based on KAYAK aggregated and averaged internal data over the past 12 months.

Question 26

When are flights from Washington, D.C. to St. Louis the cheapest?

Accepted Answer

Flights from Washington, D.C. to St. Louis are cheapest 22 weeks before departure. Booking in this window typically costs about 61% less than the average last-minute fare (within 2 weeks of the flight), based on KAYAK data.

Question 27

Which airline is the cheapest to fly from Washington, D.C. to St. Louis?

Accepted Answer

Frontier ($106) and Southwest ($243) are the cheapest airlines to fly round-trip from Washington, D.C. to St. Louis according to KAYAK data over the last 5 days.

Question 28

Which airline offers the most nonstop flights between Washington, D.C. and St. Louis?

Accepted Answer

Southwest and American Airlines offer the most frequent nonstop flights from Washington, D.C. to St. Louis, at 27 and 19 flights per week respectively. United Airlines is another good option, operating 14 flights per week. Based on KAYAK flight data over the last 3 months.

Question 29

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

Accepted Answer

Atlanta Hartsfield-Jackson (ATL) is the most popular layover for the Washington, D.C. to St. Louis route. 42% of KAYAK users who booked 1-stop round-trips over the past 3 months connected via ATL.

Question 30

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

Accepted Answer

Flights via Denver Intl (DEN) offer the most affordable fares, with an average round-trip price of $234. Based on KAYAK data over the past 3 months.

Question 31

Which route with a layover is the fastest from Washington, D.C. to St. Louis?

Accepted Answer

Detroit Metropolitan Wayne County (DTW) offers the shortest 1-stop connection from Washington, D.C. to St. Louis at 4h 40m one-way, 2h 08m longer than the 2h 32m direct flight. Based on KAYAK data over the past 3 months.

Question 32

When flying from Washington, D.C. to St. Louis which airport offers the shortest layover?

Accepted Answer

Chicago Midway (MDW) had the shortest average connection time for Washington, D.C. to St. Louis layovers at 3h 04m over the past 3 months.

Question 33

How many nonstop flights run daily between Washington, D.C. and St. Louis?

Accepted Answer

There are 6 to 9 flights per day from Washington, D.C. to St. Louis, about 60 flights per week. Monday has the most departures, with 15% of weekly flights.

Question 34

What time of day do most flights depart from Washington, D.C. to St. Louis?

Accepted Answer

Most nonstop flights from Washington, D.C. to St. Louis depart in the morning, accounting for 34% of nonstop departures. Around 3 flights are scheduled in that window over the next three months.

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High season	May
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WAS - STL

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