Question 1

What are the cheapest airlines flying from St. Louis to Washington, D.C. Dulles Intl Airport round-trip?

Accepted Answer

Currently priced at $188, Delta will fly you from St. Louis to Washington, D.C. Dulles Intl Airport and back. In addition to Delta, many other airlines offer competitively priced options for your trip. Search Cheapflights for deals from United Airlines and Sun Country Air - these airlines can fly you to your destination from $205 and $245, respectively. Delta is 51% cheaper than the average price of flights available within the next 90 days to this destination.

Question 2

What are the cheapest airlines to fly from St. Louis to Washington, D.C. Dulles Intl Airport one-way?

Accepted Answer

To fly one-way, consider booking your trip with Delta, which is currently one of the cheapest options available, starting at $93. United Airlines flights start at $100 while deals on Sun Country Air start at $123 one-way.

Question 3

E

Accepted Answer

Currently, September is the cheapest month in which you can book a flight from St. Louis to Washington, D.C. Dulles Intl Airport (average of $279). Flying from St. Louis to Washington, D.C. Dulles Intl Airport in June is currently the most expensive (average of $395). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

January

$308

February

$303

March

$358

April

$337

May

$339

June

$395

July

$376

August

$297

September

$279

October

$303

November

$328

December

$292

Question 4

When is the best time to book a flight from St. Louis to Washington, D.C. Dulles Intl Airport?

Accepted Answer

The best time to book flights from St. Louis to Washington, D.C. Dulles Intl Airport is 51 days before your desired departure date. The cost of your flight will likely increase significantly if you book two weeks in advance of your flight.

Question 5

When is the cheapest time to fly from St. Louis to Washington, D.C. Dulles Intl Airport?

Accepted Answer

Travelers seeking maximum savings on their St. Louis to Washington, D.C. Dulles Intl Airport flight should consider departing on Saturday afternoons when fares are most often at their lowest. Thursday at noon flights should be avoided if possible as fares are typically the most expensive at this time.

Question 6

How recently were the St. Louis to Washington, D.C. Dulles Intl Airport flight deals updated?

Accepted Answer

The St. Louis to Washington, D.C. Dulles Intl Airport flight deals you see on this page were last updated on 5/8.

Question 7

What are the most popular airlines that fly from St. Louis to Washington, D.C. Dulles Intl Airport?

Accepted Answer

American Airlines, Delta and United Airlines are the most popular airlines when flying from St. Louis to Washington, D.C. Dulles Intl Airport.

Question 8

What are the cheapest flights from St. Louis to Washington, D.C. Dulles Intl Airport?

Accepted Answer

On average you can expect to pay $1,892 for a flight from St. Louis to Washington, D.C. Dulles Intl Airport. The cheapest flight overall is $137 while the most popular route, (Lambert-St Louis - Washington, D.C. Dulles Intl) is currently priced at $188.

Question 9

What are the most reliable airlines from St. Louis to Washington, D.C. Dulles Intl Airport?

Accepted Answer

No one likes to see their flight delayed. When booking a flight from St. Louis to Washington, D.C. Dulles Intl Airport consider choosing Avianca (98%), Copa Airlines (98%) or GoJet (96%) as they are the most reliable in getting you off to your destination on time.

Question 10

Can I find flights from St. Louis to Washington, D.C. Dulles Intl Airport for under $200 on Cheapflights?

Accepted Answer

Yes, there are multiple flights from St. Louis to Washington, D.C. Dulles Intl Airport for under $200. The cheapest flight booked recently is on Delta for just $188, but on average you can expect to pay $227.

Question 11

Are there nonstop flights from St. Louis to Washington, D.C. Dulles Intl Airport for under $300 on Cheapflights?

Accepted Answer

Cheapflights has at least 20 direct flights from St. Louis to Washington, D.C. Dulles Intl Airport under $300. A good price for a nonstop flight from St. Louis to Washington, D.C. Dulles Intl Airport is less than $435.

Question 12

Are there last-minute flights available from St. Louis to Washington, D.C. Dulles Intl Airport for under $400?

Accepted Answer

There are currently 20+ open flights from St. Louis to Washington, D.C. Dulles Intl Airport within the next 7 days for less than $400.

Question 13

What is the cheapest day to fly round-trip from St. Louis to Washington, D.C. Dulles Intl Airport?

Accepted Answer

Flights from St. Louis to Washington, D.C. Dulles Intl Airport are found to be more expensive on Saturday. This shouldn't discourage you from searching as you can still find great deals by being flexible with your options. Use our search form to find deals on tickets to Washington, D.C. Dulles Intl Airport.

Question 14

How far in advance should I book a flight from St. Louis to Washington, D.C. Dulles Intl Airport?

Accepted Answer

To save on the cost of your flight from St. Louis to Washington, D.C. Dulles Intl Airport, book at least 53 days before your planned departure. Booking around this time can save you about 96% on the cost of this flight compared to booking a flight leaving this week. We have found prices from $310 if you need a flight within two weeks. For flights within the next 72 hours, you can find tickets from as low as $462.

Question 15

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

Accepted Answer

Due to multiple factors, expect to potentially pay more when booking in June. For low rates, January can be a great choice for travel to Washington, D.C. Dulles Intl Airport. Flights to Washington, D.C. Dulles Intl Airport from St. Louis in January are about $278 on average during January, but can be found for as low as $108.

Question 16

When is the cheapest time to fly from St. Louis to Washington, D.C. Dulles Intl Airport (STL - IAD)?

Accepted Answer

It’s optimal to fly from St. Louis to Washington, D.C. Dulles Intl Airport in the evening. By choosing this option you can save up to 43% on the cost of your flight, compared to a flight at noon.

Question 17

What airport do you fly from for flights from St. Louis to Washington, D.C. Dulles Intl?

Accepted Answer

Most people fly from Lambert-St Louis (STL) if they book a flight from St. Louis to Washington, D.C. Dulles Intl. On average, Lambert-St Louis has 5 outbound flights to Washington, D.C. Dulles Intl per day from 3 airlines. Lambert-St Louis is conveniently located just 12.7 mi from St. Louis’s city center.

Question 18

What does STL to IAD mean?

Accepted Answer

This is defined as Lambert-St Louis Airport (STL) and Washington, D.C. Dulles Intl Airport (IAD). Codes like Washington, D.C. Dulles Intl Airport are often used to just call airports uniquely.

Question 19

Can I find deals for flights from St. Louis to Dulles Intl that include extra baggage allowance?

Accepted Answer

The amount of baggage you can bring on your St. Louis to Dulles Intl flight depends on the airline and the type of fare you've chosen. After entering your flight details, you'll be able to view the specific baggage policies for each deal in the search results. Keep in mind that certain deals may offer additional baggage allowance.

Question 20

Can I find deals on flights from St. Louis to Dulles Intl with specific airlines?

Accepted Answer

Yes, Cheapflights allows you to browse and filter St. Louis to Dulles Intl flight deals by airline. After entering your origin and destination, use the available filters to view flights offered by airlines.

Question 21

Can I find deals for flights from St. Louis to Dulles Intl that include hotel bookings?

Accepted Answer

Yes. In addition to deals on St. Louis to Dulles Intl flights, Cheapflights offers vacation packages that include both flights and hotel.

Question 22

How can I find direct flights from St. Louis to Dulles Intl?

Accepted Answer

After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from St. Louis to Dulles Intl.

Question 23

Can I find deals for business class flights from St. Louis to Dulles Intl?

Accepted Answer

Yes. Cheapflights offers flight deals from St. Louis to Dulles Intl by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

Question 24

Can I find deals for flights from St. Louis to Dulles Intl that allow pets onboard?

Accepted Answer

Many airlines flying from St. Louis to Dulles Intl offer the option to travel with pets. After selecting a flight deal, you can find more information about the airline's pet policy on their official website or by contacting the airline directly. Please note that additional fees and restrictions may apply.

Question 25

Can I find deals on last-minute flights from St. Louis to Dulles Intl?

Accepted Answer

Yes, you can often find last-minute deals on St. Louis to Dulles Intl flights on Cheapflights. However, these deals can vary and may not always be available. We recommend checking back frequently or signing up for price alerts for the most up-to-date deals.

Question 26

How does Cheapflights help users find flights from St. Louis to Dulles Intl?

Accepted Answer

Cheapflights makes it easy to find St. Louis to Dulles Intl flights by helping our users search from 900+ travel sites for deals. We also provide you with filters for cabin, price, airline, airports, number of stops, and many more to narrow down that perfect flight.

Question 27

Why should you use Cheapflights to find cheap flight tickets from St. Louis to Dulles Intl?

Accepted Answer

By finding flights from multiple airlines and providers at completely no cost, Cheapflights helps millions of users like you annually find the best flights to Dulles Intl from St. Louis.

Question 28

Can Cheapflights find flights from St. Louis to Dulles Intl with no change fees?

Accepted Answer

Yes, we can. To see specific flights from St. Louis to Dulles Intl with no change fees, users can toggle flexible booking options after using the search form above to find flights.

Question 29

Can Cheapflights notify me if prices for flights from St. Louis to Dulles Intl become cheaper?

Accepted Answer

Yes, Cheapflights has a feature called Price Alert, which notifies users when flight prices change. Track prices for your flight to Dulles Intl from St. Louis today and book when prices fit your budget.

Popular in	April
Cheapest in	December
Round-trip from	$235
One-way from	$123

Airline	Cheapest	Average	Flexibility	On-time
Delta	Cheapest$177	Average$285	FlexibilityNo cancel fee	On-timeN/A	Search Delta flights
United Airlines	Cheapest$196	Average$439	FlexibilityNo cancel fee	On-time69%	Search United Airlines flights
American Airlines	Cheapest$222	Average$317	FlexibilityNo cancel fee	On-time71%	Search American Airlines flights

1%of flight departures	Early morningMidnight to 6 am
74%of flight departures	Morning6 am to noon
25%of flight departures	AfternoonNoon to 6 pm
0%of flight departures	Evening6 pm to midnight

Sunday	5daily flights
Monday	6daily flights
Tuesday	5daily flights
Wednesday	6daily flights
Thursday	5daily flights
Friday	6daily flights
Saturday	4daily flights

Cheap flights from St. Louis (STL) to Dulles Intl (IAD) from $93

This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 6/4. Fares are subject to change and may not be available on all flights or dates of travel. Click the price to replicate the search for this deal.

The best prices from Lambert-St Louis to Washington, D.C. Dulles Intl are usually found in December or March, booked 52 days in advance, depart on a Tuesday or Saturday and return on a Wednesday

Cheap flight deals from St. Louis to Dulles Intl

Popular in

Cheapest in

Round-trip from

One-way from

What is the cheapest day to fly round-trip from St. Louis to Washington, D.C. Dulles Intl Airport?

How far in advance should I book a flight from St. Louis to Washington, D.C. Dulles Intl Airport?

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

When is the cheapest time to fly from St. Louis to Washington, D.C. Dulles Intl Airport (STL - IAD)?

Cheap Delta flights from St. Louis to Dulles Intl

Check out some of the cheapest Delta flights we've come across from St. Louis to Washington, D.C.. It's recommended that users confirm their flight details before booking.

Cheap United Airlines flights from St. Louis to Dulles Intl

Have a look at some of the cheapest available United Airlines flights departing from St. Louis and landing in Washington, D.C.. Make sure to examine the flight information before completing your reservation.

Cheap St. Louis to Dulles Intl flights in May & June 2024

Find cheap flight options from St. Louis to Dulles Intl specifically for the months of May and June 2024. Explore affordable fares based on user searches. Over the last 7 days, Cheapflights users made 2,752,338 searches. Prices were last updated on May 9, 2024.

The lowest fares we've come across on flights traveling from St. Louis to Washington, D.C. in May and June 2024. More deals are always being added, so be sure to check back regularly.

St. Louis to Dulles Intl 2024 flight deals

Discover exclusive flight deals for travel between St. Louis and Dulles Intl in 2024. Find excellent offers based on user searches. Over the last 7 days, Cheapflights users made 2,752,338 searches. Data last updated May 9, 2024.

The lowest fares we've come across on flights traveling from St. Louis to Washington, D.C. in May and June 2024. More deals are always being added, so be sure to check back regularly.

Non-stop flights to Dulles Intl from St. Louis

For a quicker trip, book one of these direct flights from St. Louis to Washington, D.C.. Select from other flights from St. Louis to Washington, D.C. by using the search form above.

St. Louis to Dulles Intl flights leaving soon

Consider one of these great deals we found on last-minute flights from St. Louis to Washington, D.C.. Users should be sure to double check the price, date, and time of their last-minute flight.

One-way flights to Dulles Intl from St. Louis

If you're seeking multiple options on one-way flights from St. Louis to Washington, D.C., be sure to check out these deals, which are updated often. Users needing a return flight from St. Louis to Washington, D.C. should utilize the search form above.

Find flights from St. Louis to Dulles Intl within your budget

When is the best time to book a flight from St. Louis to Washington, D.C. Dulles Intl Airport?

Use this chart to determine the optimal time to book a round-trip flight from St. Louis to Dulles Intl. Price data was last updated on May 3, 2024.

The best time to book flights from St. Louis to Washington, D.C. Dulles Intl Airport is 51 days before your desired departure date. The cost of your flight will likely increase significantly if you book two weeks in advance of your flight.

When is the cheapest time to fly from St. Louis to Washington, D.C. Dulles Intl Airport?

Use this chart to determine the cheapest time to fly round-trip from St. Louis to Dulles Intl. Price data was last updated on May 5, 2024.

Average price of flights to Dulles Intl by month

Plan your trip from St. Louis to Dulles Intl by taking into account the cheapest months to travel. The average price of a one-way flight from St. Louis to Dulles Intl is currently $110 while a round-trip flight costs $229. Price data was last updated on May 5, 2024.

Temperature and rainfall in Dulles Intl by month

Plan your trip to Dulles Intl by taking into account the average temperature and rainfall totals by month.

Reviews of airlines servicing Dulles Intl

Related info for your journey

Find useful and relevant information for your journey from St. Louis to Dulles Intl. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

What airport do you fly from for flights from St. Louis to Washington, D.C. Dulles Intl?

Can I find flights from St. Louis to Washington, D.C. Dulles Intl Airport for under $200 on Cheapflights?

Are there nonstop flights from St. Louis to Washington, D.C. Dulles Intl Airport for under $300 on Cheapflights?

Are there last-minute flights available from St. Louis to Washington, D.C. Dulles Intl Airport for under $400?

What are the cheapest airlines flying from St. Louis to Washington, D.C. Dulles Intl Airport round-trip?

What are the cheapest airlines to fly from St. Louis to Washington, D.C. Dulles Intl Airport one-way?

What are the most popular airlines that fly from St. Louis to Washington, D.C. Dulles Intl Airport?

What are the most reliable airlines from St. Louis to Washington, D.C. Dulles Intl Airport?

What are the cheapest flights from St. Louis to Washington, D.C. Dulles Intl Airport?

What does STL to IAD mean?

Can I find deals for flights from St. Louis to Dulles Intl that include extra baggage allowance?

Can I find deals on flights from St. Louis to Dulles Intl with specific airlines?

Can I find deals for flights from St. Louis to Dulles Intl that include hotel bookings?

How can I find direct flights from St. Louis to Dulles Intl?

Can I find deals for business class flights from St. Louis to Dulles Intl?

Can I find deals for flights from St. Louis to Dulles Intl that allow pets onboard?

Can I find deals on last-minute flights from St. Louis to Dulles Intl?

How recently were the St. Louis to Washington, D.C. Dulles Intl Airport flight deals updated?

Browse thousands of different options on Cheapflights for your next trip

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Alternative routes for St. Louis to Dulles IntlSee prices for flight routes from nearby airports that may be better suited for you.

See prices for flight routes from nearby airports that may be better suited for you.

Top 3 airlines flying from St. Louis to Dulles Intl

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Search flights from St. Louis to Dulles Intl by cabin class

Find flights from St. Louis to Dulles Intl, based on your preferred cabin class, be it economy, premium economy, business, or first class.

Hourly flight availability from St. Louis to Dulles Intl

Find hourly flight availability from St. Louis to Dulles Intl. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated May 9, 2024.

Weekly flight availability from St. Louis to Dulles Intl

Explore weekly flight availability from St. Louis to Dulles Intl. Discover flights operating on different days of the week, giving you the flexibility to choose a travel day that best fits your plans. Compare info to find the most convenient option for your journey. Data last updated May 9, 2024.

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How does Cheapflights help users find flights from St. Louis to Dulles Intl?

Why should you use Cheapflights to find cheap flight tickets from St. Louis to Dulles Intl?

Can Cheapflights find flights from St. Louis to Dulles Intl with no change fees?

Can Cheapflights notify me if prices for flights from St. Louis to Dulles Intl become cheaper?

Alternative routes for St. Louis to Dulles Intl
See prices for flight routes from nearby airports that may be better suited for you.