Question 1

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

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.

Question 2

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

Accepted Answer

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

Question 3

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

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 from St. Louis to Washington with an airline and back with another airline.

Question 4

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

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 from St. Louis to Washington up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

Question 5

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

Accepted Answer

St. Louis and Washington are connected by different airlines. The airlines that fly that route the most regularly are American Airlines (45 flights per week), Alaska Airlines (37 flights per week), and Japan Airlines (15 flights per week).

Question 6

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

Accepted Answer

St. Louis and Washington are connected by different airlines. The airlines that fly that route the most regularly are American Airlines (45 flights per week), Alaska Airlines (37 flights per week), and Japan Airlines (15 flights per week).

Question 7

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

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 8

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

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 9

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

Accepted Answer

In the past 5 days, the cheapest round-trip tickets from St. Louis to Washington were found on Alaska Airlines ($297) and Southwest ($333).

Question 10

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

Accepted Answer

In the past 5 days, the cheapest round-trip tickets from St. Louis to Washington were found on Alaska Airlines ($297) and Southwest ($333).

Question 11

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

Accepted Answer

Your flight ticket price will generally be cheaper if you fly to Washington on a Friday and more expensive on a Monday. On your return trip to St. Louis, you should consider flying back on a Tuesday, and avoid Sundays for better deals.

Question 12

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

Accepted Answer

Your flight ticket price will generally be cheaper if you fly to Washington on a Friday and more expensive on a Monday. On your return trip to St. Louis, you should consider flying back on a Tuesday, and avoid Sundays for better deals.

Question 13

What is the cheapest time of day to fly to Washington?

Accepted Answer

The cheapest time of day to fly to Washington is generally in the evening, when round-trip flights cost $458 on average. Morning departures are around 11% more expensive than evening flights, on average. The most expensive time of day to fly to Washington is generally in the afternoon, which is peak travel time and where the average cost of a ticket is $548.

Question 14

What is the cheapest time of day to fly to Washington?

Accepted Answer

The cheapest time of day to fly to Washington is generally in the evening, when round-trip flights cost $458 on average. Morning departures are around 11% more expensive than evening flights, on average. The most expensive time of day to fly to Washington is generally in the afternoon, which is peak travel time and where the average cost of a ticket is $548.

Question 15

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

Accepted Answer

The cheapest month for flights from St. Louis to Washington is February, when tickets cost $244 (return) on average. On the other hand, the most expensive months are July and June, when the average cost of round-trip tickets is $517 and $474 respectively.

Question 16

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

Accepted Answer

The cheapest month for flights from St. Louis to Washington is February, when tickets cost $244 (return) on average. On the other hand, the most expensive months are July and June, when the average cost of round-trip tickets is $517 and $474 respectively.

Question 17

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

Accepted Answer

The cheapest ticket to Washington from St. Louis found in the last 5 days was to Seattle, at $357 round-trip. The most popular route is from St. Louis (STL) to Seattle (SEA), and the cheapest round-trip airline ticket found on this route in the last 5 days was $357.

Question 18

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

Accepted Answer

The cheapest ticket to Washington from St. Louis found in the last 5 days was to Seattle, at $357 round-trip. The most popular route is from St. Louis (STL) to Seattle (SEA), and the cheapest round-trip airline ticket found on this route in the last 5 days was $357.

Question 19

How far in advance should I book a flight from St. Louis to Washington?

Accepted Answer

To get a below average price on the flight from St. Louis to Washington, you should book around 3 weeks before departure, which saves you about 37% compared to booking last minute. For the absolute cheapest price, our data suggests you should book 8 weeks before departure.

Question 20

How far in advance should I book a flight from St. Louis to Washington?

Accepted Answer

To get a below average price on the flight from St. Louis to Washington, you should book around 3 weeks before departure, which saves you about 37% compared to booking last minute. For the absolute cheapest price, our data suggests you should book 8 weeks before departure.

Question 21

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

Accepted Answer

There are 4 airlines that fly nonstop from St. Louis to Washington. They are: American Airlines, Alaska Airlines, Southwest and Hawaiian Airlines. The cheapest price of all airlines flying this route was found with American Airlines at $188 for a round-trip flight to Seattle (SEA). On average, Hawaiian Airlines offers the best prices for nonstop flights between St. Louis and Washington.

Question 22

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

Accepted Answer

There are 4 airlines that fly nonstop from St. Louis to Washington. They are: American Airlines, Alaska Airlines, Southwest and Hawaiian Airlines. The cheapest price of all airlines flying this route was found with American Airlines at $188 for a round-trip flight to Seattle (SEA). On average, Hawaiian Airlines offers the best prices for nonstop flights between St. Louis and Washington.

Question 23

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

Accepted Answer

The earliest flight from St. Louis to Washington departs at 6:02 am, landing in Seattle at 8:30 am.

Question 24

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

Accepted Answer

Each day, there are between 3 and 4 nonstop flights that take off from St. Louis and land in Washington, with an average flight time of 4h 24m. The most common departure time is 7:00 pm and most flights take off in the afternoon, while the most flights land at Seattle. Each week, there are 26 flights. The most frequent day of departure is Monday, when 15% of all weekly flights depart. The fewest flights depart on a Tuesday.

Question 25

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

Accepted Answer

Each day, there are between 3 and 4 nonstop flights that take off from St. Louis and land in Washington, with an average flight time of 4h 24m. The most common departure time is 7:00 pm and most flights take off in the afternoon, while the most flights land at Seattle. Each week, there are 26 flights. The most frequent day of departure is Monday, when 15% of all weekly flights depart. The fewest flights depart on a Tuesday.

Question 26

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

Accepted Answer

The duration of a flight to Washington depends on your arrival airport. The shortest routes to Washington from St. Louis are to Seattle, which takes 4h 15m, Spokane, which takes 5h 47m, and Pasco, which takes 6h 06m.

Question 27

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

Accepted Answer

The duration of a flight to Washington depends on your arrival airport. The shortest routes to Washington from St. Louis are to Seattle, which takes 4h 15m, Spokane, which takes 5h 47m, and Pasco, which takes 6h 06m.

Question 28

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

Accepted Answer

If you prefer to fly at night, the latest flight from St. Louis to Washington jets off at 7:56 pm and lands in Seattle at 10:24 pm.

Question 29

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

Accepted Answer

No, with an average price for the route of $399, prices are generally cheapest when you fly direct.

Question 30

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

Accepted Answer

No, with an average price for the route of $399, prices are generally cheapest when you fly direct.

Question 31

How much is a round-trip flight from St. Louis to State of Washington?

Accepted Answer

Flight prices are typical for this route right now.Flights to State of Washington from St. Louis usually cost between $341 and $510 in September.
The lowest price found in the past 5 days was $347 on Alaska Airlines (Sep 2-Sep 8).

Low season	January
High season	July
Cheapest flight	$74

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

How much is a round-trip flight from St. Louis to State of Washington?

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

What is the cheapest time of day to fly to Washington?

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

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

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

How far in advance should I book a flight from St. Louis to Washington?

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

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

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

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

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

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

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

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

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