Cheap flights from St. Louis (STL) to Dulles Intl (IAD) from $104
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 8/13. 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
Discover tips and strategies to find the most affordable flight options for your journey from St. Louis (STL) to Dulles Intl (IAD). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated May 14, 2024.
Popular in | April |
|---|---|
Cheapest in | December |
Round-trip from | $235 |
One-way from | $178 |
What is the cheapest day to fly round-trip from St. Louis to Washington, D.C. Dulles Intl Airport?
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.
How far in advance should I book a flight from St. Louis to Washington, D.C. Dulles Intl Airport?
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 108% on the cost of this flight compared to booking a flight leaving this week. We have found prices from $327 if you need a flight within two weeks. For flights within the next 72 hours, you can find tickets from as low as $462.
What is the cheapest month to fly from St. Louis to Washington, D.C. Dulles Intl Airport?
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.
When is the cheapest time to fly from St. Louis to Washington, D.C. Dulles Intl Airport (STL - IAD)?
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.
Cheap American Airlines flights from St. Louis to Dulles Intl
Explore cheap flight options specifically provided by American Airlines for the route between St. Louis and Dulles Intl. Find affordable fares and compare prices with other airlines to secure the best deal for your journey. Over the last 7 days, Cheapflights users made 2,633,403 searches. Data last updated May 14, 2024.
Check out some of the cheapest American Airlines flights we've come across from St. Louis to Washington, D.C.. It's recommended that users confirm their flight details before booking.
Cheap Delta flights from St. Louis to Dulles Intl
Explore cheap flight options specifically provided by Delta for the route between St. Louis and Dulles Intl. Find affordable fares and compare prices with other airlines to secure the best deal for your journey. Over the last 7 days, Cheapflights users made 2,633,403 searches. Data last updated May 14, 2024.
Have a look at some of the cheapest available Delta 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 2,633,403 searches. Prices were last updated on May 14, 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 2,633,403 searches. Data last updated May 14, 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
Discover non-stop flight options from St. Louis to Dulles Intl. Find direct flights with no layovers, providing a convenient travel experience. Explore non-stop flight options based on user searches, and compare prices and availability for your desired travel dates. Over the last 7 days, Cheapflights users made 2,633,403 searches. Data last updated May 14, 2024.
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
Find last-minute flight options from St. Louis to Dulles Intl for spontaneous travel. Discover available flights and compare prices based on user searches. Secure great deals and offers for spontaneous trips with quick booking options. Over the last 7 days, Cheapflights users made 2,633,403 searches. Data last updated May 14, 2024.
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
Search for one-way flight options from St. Louis to Dulles Intl. Find affordable one-way fares based on user searches. Compare prices and availability to plan your one-way journey according to your preferred dates and budget. Over the last 7 days, Cheapflights users made 2,633,403 searches. Data last updated May 14, 2024.
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
Customize your flight search to find flights from St. Louis to Dulles Intl that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, Cheapflights users made 2,633,403 searches. Data last updated May 14, 2024.
Fly from
Fly to
Budget
$188 - $295
Route
Depart
Return
Price
Lambert-St LouisWashington, D.C. Dulles Intl
STL - IAD
STLIAD
Lambert-St Louis
Tue 6/4
1 stop3h 41m
Washington, D.C. Dulles Intl
Wed 6/5
1 stop5h 48m
Lambert-St LouisWashington, D.C. Dulles Intl
STL - IAD
STLIAD
Lambert-St Louis
Thu 7/4
1 stop6h 57m
Washington, D.C. Dulles Intl
Sun 7/7
1 stop4h 09m
Lambert-St LouisWashington, D.C. Dulles Intl
STL - IAD
STLIAD
Lambert-St Louis
Mon 7/29
1 stop5h 32m
Washington, D.C. Dulles Intl
Wed 7/31
1 stop4h 02m
Lambert-St LouisWashington, D.C. Dulles Intl
STL - IAD
STLIAD
Lambert-St Louis
Fri 7/12
1 stop27h 12m
Washington, D.C. Dulles Intl
Mon 7/15
1 stop25h 51m
Lambert-St LouisWashington, D.C. Dulles Intl
STL - IAD
STLIAD
Lambert-St Louis
Fri 5/24
1 stop25h 17m
Washington, D.C. Dulles Intl
Sun 5/26
1 stop5h 55m
Lambert-St LouisWashington, D.C. Dulles Intl
STL - IAD
STLIAD
Lambert-St Louis
Fri 5/31
1 stop6h 16m
Washington, D.C. Dulles Intl
Wed 6/5
Nonstop2h 12m
Lambert-St LouisWashington, D.C. Dulles Intl
STL - IAD
STLIAD
Lambert-St Louis
Tue 8/6
1 stop6h 08m
Washington, D.C. Dulles Intl
Fri 10/18
1 stop4h 02m
Lambert-St LouisWashington, D.C. Dulles Intl
STL - IAD
STLIAD
Lambert-St Louis
Mon 9/9
1 stop5h 55m
Washington, D.C. Dulles Intl
Sat 9/14
Nonstop2h 21m
Lambert-St LouisWashington, D.C. Dulles Intl
STL - IAD
STLIAD
Lambert-St Louis
Tue 6/18
3 stops18h 57m
Washington, D.C. Dulles Intl
Sat 6/22
1 stop8h 21m
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 10, 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 12, 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 $132 while a round-trip flight costs $241. Price data was last updated on May 5, 2024.
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 $280). Flying from St. Louis to Washington, D.C. Dulles Intl Airport in June is currently the most expensive (average of $397). 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
$336
June
$397
July
$376
August
$298
September
$280
October
$303
November
$328
December
$293
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.
WAS Temperature | 35.6 - 80.6 °F |
|---|
Reviews of airlines servicing Dulles Intl
Get insights into the airlines that provide service to Dulles Intl. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to Dulles Intl. Reviews last updated May 14, 2024.
To help decide which airline to fly from St. Louis to Washington, D.C., see what other customers have to say about American Airlines, Delta and United Airlines. In addition to providing an overall rating, users have also rated airlines in terms of entertainment options, comfort, food, crew/service, and boarding process.
Entertainment
Crew
Boarding
Comfort
Food
Overall
Reviews
When I was going to board, one of the staff members told me that I could not board with my passport bag because it was tree items and I would need to check a bag. This was so stupid ! The bag was small. So I had to put my things in my pockets, put the funny bag inside the other bag. Then go throw it. Then in the plane put everything back again in my funny bag.
Entertainment
Crew
Boarding
Comfort
Food
Overall
Reviews
When I was going to board, one of the staff members told me that I could not board with my passport bag because it was tree items and I would need to check a bag. This was so stupid ! The bag was small. So I had to put my things in my pockets, put the funny bag inside the other bag. Then go throw it. Then in the plane put everything back again in my funny bag.
Entertainment
Crew
Boarding
Comfort
Food
Overall
Reviews
When I was going to board, one of the staff members told me that I could not board with my passport bag because it was tree items and I would need to check a bag. This was so stupid ! The bag was small. So I had to put my things in my pockets, put the funny bag inside the other bag. Then go throw it. Then in the plane put everything back again in my funny bag.
Entertainment
Crew
Boarding
Comfort
Food
Overall
Reviews
When I was going to board, one of the staff members told me that I could not board with my passport bag because it was tree items and I would need to check a bag. This was so stupid ! The bag was small. So I had to put my things in my pockets, put the funny bag inside the other bag. Then go throw it. Then in the plane put everything back again in my funny bag.
Entertainment
Crew
Boarding
Comfort
Food
Overall
Reviews
When I was going to board, one of the staff members told me that I could not board with my passport bag because it was tree items and I would need to check a bag. This was so stupid ! The bag was small. So I had to put my things in my pockets, put the funny bag inside the other bag. Then go throw it. Then in the plane put everything back again in my funny bag.
Entertainment
Crew
Boarding
Comfort
Food
Overall
Reviews
When I was going to board, one of the staff members told me that I could not board with my passport bag because it was tree items and I would need to check a bag. This was so stupid ! The bag was small. So I had to put my things in my pockets, put the funny bag inside the other bag. Then go throw it. Then in the plane put everything back again in my funny bag.
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.
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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
Discover the top 3 airlines that operate flights from St. Louis to Dulles Intl. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 2,633,403 searches. Data last updated May 14, 2024.
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 14, 2024.
| 1%of flight departures | Early morningMidnight to 6 am |
|---|---|
| 62%of flight departures | Morning6 am to noon |
| 37%of flight departures | AfternoonNoon to 6 pm |
| 0%of flight departures | Evening6 pm to midnight |
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 14, 2024.
| Sunday | 5daily flights |
|---|---|
| Monday | 6daily flights |
| Tuesday | 5daily flights |
| Wednesday | 6daily flights |
| Thursday | 5daily flights |
| Friday | 6daily flights |
| Saturday | 4daily flights |
Book a flight to one of these trending destinations
User searches for flights to these destinations increased 20% or more in the past 90 days compared to other destinations
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How does Cheapflights help users find flights from St. Louis to Dulles Intl?
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.
Why should you use Cheapflights to find cheap flight tickets from St. Louis to Dulles Intl?
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.
Can Cheapflights find flights from St. Louis to Dulles Intl with no change fees?
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.
Can Cheapflights notify me if prices for flights from St. Louis to Dulles Intl become cheaper?
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.