$98 Cheap Delta flights from Washington to St. Louis (IAD to STL)

Find The Best Day To Fly from Washington to St. Louis

Amazing Delta IAD to STL Flight Deals

The cheapest flights to Lambert-St. Louis Intl. found within the past 7 days were $173 round trip and $98 one way. Prices and availability subject to change. Additional terms may apply.

STL From IAD Economy Coach Packages on Similar Airlines

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The Wildwood Hotel
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Frequently asked questions

Can I catch a flight from IAD to Lambert-St. Louis Intl. Airport (STL) right now?
It’s always wise to know about any quarantine requirements and travel advice reports in effect in your destination. Ensure you check out our Covid-19 Travel Advisor for up-to-date information on catching a flight to Lambert-St. Louis Intl. Airport (STL) from IAD.
What terminal is Delta Air Lines at Washington Dulles Intl. Airport (IAD)?
You should find out which terminal Delta Air Lines operates from at IAD once you receive your boarding pass. The same goes for information about your arrival at Lambert Field. If those details are missing, ask your airline.
Are there Delta Air Lines non-stop flights from IAD to STL?
Be prepared to make at least one stopover when traveling from IAD to Lambert Field, as Delta Air Lines doesn’t offer any nonstop flights between these two locations. While waiting for your connection, you might like to grab a new novel or a glossy magazine from the airport bookstore to make the time go faster.
How long is a Delta Air Lines flight from IAD to STL?
Tailwinds, headwinds, bad weather … They’re just a few things that are relevant to how long you spend strapped into your seat. However, a flight from IAD to Lambert Field with Delta Air Lines takes roughly 3 hours and 42 minutes, so you’ll have landed and be in getaway mode in next to no time.
How many direct and indirect flights does Delta Air Lines fly from IAD to STL?
You can decide between roughly 5 flights each day with Delta Air Lines from Washington Dulles Intl. Airport (IAD) to Lambert Field.
If I am not able to travel due to COVID-19, can I change my booking to a later date?
For more info about changing your flight to STL, please visit our Customer Service Portal.
What is the best day to buy a plane ticket?
This just in! Airfares offered on Thursdays tend to be the cheapest, according to flight demand on Travelocity in 2021. Tuesday and Wednesday prices are also good, but you may want to prepare your budget if booking during the weekend, as data shows that is when prices are generally at their highest.
What are the cheapest days to fly?
Frequent travelers may already know this, but earlier in the week can be the cheapest time to fly. In 2021, flights departing on a Monday were generally the cheapest of the week, whereas you may pay a premium for weekend flights when demand is usually high. On average, tickets were most expensive for Saturday departures, so if you need to fly out on a weekend, you might look for deals ahead of time.
How far in advance can you book a flight?
Trying to figure out how early you should book your flight? It’s possible to start comparing international airfares on Travelocity up to 12 months in advance. However, it does depend on the carrier as not all airlines release their prices that far out. According to our 2021 flight demand trends, last minute planners can still bag a bargain with some of the cheapest fares appearing 0-2 weeks prior to their travel dates.*According to flight demand on Travelocity.com from January to December 2021. Savings are subject to change based on departure location, date and destination.

Discover our best Delta flight from Washington IAD to St. Louis STL 

To find the best deals on flights to Washington from St. Louis with Delta, just enter your travel dates, filter by Delta, and hit search. You’ll find flights to choose from and can sort by price, flight duration, and arrival or departure time.  

 

Return flights from Washington IAD to St. Louis STL with Delta 

If you’re planning a round trip, booking return flights with Delta is usually the most cost-effective option. With airfares ranging from $173 to $204, it’s easy to find a flight that suits your budget. Prices and availability subject to change. Additional terms may apply. 

 

Book one-way Delta flights from Washington IAD to St. Louis STL 

A one-way ticket gives you much greater flexibility—allowing you to choose your return date, destination, and time whenever you’re ready. By booking in advance you can find great deals on one-way tickets too. Right now, a one-way Delta flight from Washington to St. Louis costs from $98. Prices and availability subject to change. Additional terms may apply. 

 

The easy way to find cheap flights to St. Louis STL from  Washington IAD with Delta 

To find a cheap Delta flight from Washington IAD to St. Louis STL, sort your search results by price or filter by budget. Thanks to Travelocity’s Price Match Promise, if you find a better airfare deal anywhere else within 24 hours, we’ll credit or refund the difference. 

 

How to find our best airfare deals on Delta flights from Washington IAD to St. Louis STL 

If you’re looking for cheap flights, it helps to be flexible when it comes to your travel dates. You’ll usually find lower cost tickets when you travel during quieter months such as November, or if you book a flight with a stopover. 

 

Find nonstop flights from Washington IAD to St. Louis STL with Delta 

If you’re keen to be on St. Louis soil fast, don’t waste time with a stopover—filter your search results to show direct Delta flights only. The journey takes around hour(s) min(s) – so you’ll be there before you know it. 

 

Flexible airline tickets for Delta flights from Washington IAD to St. Louis STL 

Make sure you’re not out of pocket if plans change by choosing a flexible ticket with penalty-free amendment and cancellation options. Use our ‘no change fee’ filter to see which flights have this option.  

 

There are a lot of reasons to book your flights to St. Louis STL from  Washington IAD with Delta on Travelocity 

At Travelocity our vast and up-to-the-minute inventory puts all of our best flight deals in one place. So, whether you’re traveling on business or jetting off with friends and family, you can trust Travelocity to get you there.

Delta Airports
Hop on a(n) Delta flight today by flying to many destinations out of these domestic and international airports:
Airport code
Country
Airport name
Number of flights
ATLUSAHartsfield-Jackson Atlanta Intl.252
DTWUSADetroit Metropolitan Wayne County156
MSPUSAMinneapolis - St. Paul Intl.131
SLCUSASalt Lake City Intl.116
SEAUSASeattle - Tacoma Intl.57
LAXUSALos Angeles Intl.41
AMSNLDSchiphol31
YYCCANCalgary Intl.26
YYZCANPearson Intl.24
JFKUSAJohn F. Kennedy Intl.23

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