Cheap Flights from Washington (IAD) to St. Louis (STL)

Popular airlines from Washington Dulles Intl. Airport (IAD) to St. Louis Lambert Intl. Airport (STL)

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Find the cheapest month to fly from Washington (IAD) to St. Louis (STL)

September is typically the cheapest month to fly

From ₩216,182 - ₩610,748 per traveler.

Frequently asked questions

How much is a flight from Dulles Intl. Airport to Lambert-St. Louis Intl. Airport (STL)?
Round-trip tickets from IAD to St. Louis Lambert International Airport start from . This price is based on fares listed within the last 7 days on Expedia for flights departing within the next year — make your booking ASAP so you don't miss out. Prices and availability are subject to change. Additional terms apply.
Do I need to pay a cancellation fee if I cancel my flight from IAD to Lambert-St. Louis Intl. Airport (STL)?
When it comes to cancellation fees, every airline has its own terms and conditions. If you decide to cancel your vacation, head to our Customer Service Portal.
How do I find cheap flights from IAD to Lambert-St. Louis Intl. Airport (STL) that have flexible change policies?
Many airlines offer the option to reschedule your flight without a change fee. All you pay is the difference between the original flight and the new flight. When you're searching for Dulles Intl. Airport to Lambert Field flights, you'll see a "no change fees" filter for you to select.
How far is the flight from IAD to STL?
The distance from Dulles Intl. Airport (IAD) to Lambert-St. Louis Intl. Airport (STL) (STL) is just 1,100 kilometers. You'll be stepping off the plane and grabbing your bags from the carousel before long.
Which airlines fly direct from Dulles Intl. Airport to Lambert Field?
A popular option with many travelers, United Airlines (UA) operates 60 monthly flights from IAD to STL. Pick the one that fits with your travel plans and book your fare today.
Are Dulles Intl. Airport to Lambert-St. Louis Intl. Airport (STL) flight tickets cheaper when they're purchased at the last minute?
Last-minute bookings from Washington Dulles Intl. Airport (IAD) to STL can be hit-or-miss. It is possible to score a bargain, but you could also miss out entirely! If you'd prefer to play it safe and start your travel planning early on, Expedia compares flight deals up to 12 months in advance. Just bear in mind that not all airlines issue their prices that far in advance. Our top tip? Check back often as updates are made frequently.

Travel information

Travel information

Origin airport
Washington Dulles Intl.
Destination airport
Lambert-St. Louis Intl.
Distance
1111 km
Average flight time
1 hour 23 mins

Book with confidence

Book with confidence

Chantilly to St. Louis Flights

Sometimes you just need to get out of town or maybe you’re looking for a change of scenery. Regardless of the reason, a flight from Chantilly to St. Louis will do just the trick! Go on, plan to see all the famous landmarks and eat your weight in the local cuisine. Your trip is beckoning, so answer the call by packing your suitcase and filling your travel itinerary with exploring St. Louis.

Whether you’re flying for business or jet-setting on your personal time, you’ve come to the right place. Here at Expedia.com, we’ll pair you up with IAD to STL flights that won’t make your bank account wince. Ready to temporarily leave behind Chantilly for new horizons? Browse through our cheap airfare, and filter by flight times and dates until you find just what you had in mind. From flights without layovers to ones that arrive early in the morning, you’ll come across plane tickets that suit your travel preferences. You can even bundle your flight to STL with hotels and car rentals to score even bigger savings.

All set to hit the clouds? Book your travel arrangements with us today and have left-over money to put toward your travel outings and adventures.

Chantilly to St. Louis Flights

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Explore a world of travel with Expedia

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