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STL (St. Louis) to IAD (Washington) Flights $202.4

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Here are your best fares found in the past 7 days

The lowest fare found for this route is $211.12 on Tue, Aug 22 from STL to IAD
Flights Fare Calendar Find minimum fare between origin STL and destination IAD Click this button to get previous 30 days data Click this button to get next 30 days data $515 $441 $368 $294 $220 $147 $73 $0 May Jun 26 27 28 29 30 31 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 1 2 3 4 5 6 7 8 9 10 11 12 F S S M T W T F S S M T W T F S S M T W T F S S M T W T F S S M T W T F S S M T W T F S S M T W T F S S M T W T F S S M T W T F S S M T W T F S S M T W T F S S M T W T F S S M T W T F S S M T W T F S S M T W T F S S M T Price is $ 441.6 on American Airlines Price is $ 432.0 on United Price is $ 423.4 on United Price is $ 377.66 on Delta Price is $ 376.04 on Delta Price is $ 366.0 on United Price is $ 366.0 on United Price is $ 361.16 on Delta Price is $ 359.51 on Delta Price is $ 357.4 on United Price is $ 356.65 on Delta Price is $ 346.6 on United Price is $ 342.0 on Delta Price is $ 338.0 on United Price is $ 338.0 on United Price is $ 324.16 on United Price is $ 323.0 on United Price is $ 323.0 on United Price is $ 323.0 on United Price is $ 322.0 on United Price is $ 314.4 on United Price is $ 314.4 on United Price is $ 310.13 on Delta Price is $ 309.4 on United Price is $ 303.0 on United Price is $ 301.23 on Delta Price is $ 301.23 on Delta Price is $ 299.6 on Delta Price is $ 295.6 on United Price is $ 295.6 on United Price is $ 295.6 on Delta Price is $ 294.4 on United Price is $ 289.5 on United Price is $ 289.33 on United Price is $ 287.0 on United Price is $ 287.0 on United Price is $ 287.0 on United Price is $ 287.0 on United Price is $ 287.0 on United Price is $ 287.0 on United Price is $ 287.0 on United Price is $ 287.0 on United Price is $ 283.79 on Delta Price is $ 278.4 on United Price is $ 278.4 on United Price is $ 278.4 on United Price is $ 278.4 on United Price is $ 278.4 on United Price is $ 278.4 on United Price is $ 278.4 on United Price is $ 278.4 on United Price is $ 278.4 on United Price is $ 278.4 on United Price is $ 278.4 on United Price is $ 278.4 on United Price is $ 278.4 on United Price is $ 278.11 on Delta Price is $ 270.43 on Delta Price is $ 270.43 on Delta Price is $ 258.4 on United Price is $ 240.4 on United Price is $ 231.04 on Delta Price is $ 229.61 on Delta Price is $ 228.52 on Delta Price is $ 228.52 on Delta Price is $ 228.52 on Delta Price is $ 211.12 on American Airlines

Cheap STL to IAD Flights

Prices found within past 7 days. Prices and availability subject to change. Additional terms may apply.

Interesting Facts About Flights from St. Louis to Washington (STL to IAD)

Question : How many departure times from Lambert-St. Louis International Airport (STL) to Washington Dulles International Airport (IAD) are there on a daily basis?
Answer : It does differ by the day of the week, but on average, you can expect three different choices of flight times when you book. That is lower than the national average of five.

Question : Is price more important than specific travel days for you?
Answer : The cheapest day to fly in June is Saturday. Being flexible with your travel days garners even more savings during booking.

Question : How often is the Lambert-St. Louis International Airport (STL) to Washington Dulles International Airport (IAD) route delayed?
Answer : Passengers are currently getting to their destination on schedule 71% of the time, which ranks in the 46th percentile worldwide. If a flight is delayed, though, expect an average of 37 minutes added to your flight time.

Question : Best case scenario, how quickly can someone get from STL to IAD?
Answer : If you're able to take the quickest direct flight (which is offered by United Airlines), you will be able to leave STL at 12:45 PM CDT and get to IAD at 3:42 PM EDT (one hour and 57 minutes). Remember, there is a one-hour time change.

Question : In terms of overall promptness, how does STL to IAD rank compared to the rest of the world?
Answer : The best measurement of overall promptness combines both on-time percentage and total delay minutes. STL to IAD currently has 2 stars out of 5, earning it one of the lower scores in the world.

Question : What price range should you expect when booking from Saint Louis (STL) to Dulles (IAD)?
Answer : Flight prices change more than the majority of routes in the United States for STL to IAD. They vary from $203 to $877. However, the sooner you book, the more you'll be able to save.

Question : What is the cheapest round-trip ticket you can get to Dulles?
Answer : United Airlines is the leader in keeping costs down for their passengers over the next three months. Bookings are being made at just $203, which is quite a deal when compared to the high-end bookings of $877.