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

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Frequently asked questions

Is it cheaper to buy a plane ticket from XLS to IAD last minute?
Booking your journey from XLS to Washington Dulles Intl. Airport (IAD) at the last minute could save you a nice sum if you get lucky and find a terrific deal. However, tickets usually don't drop in price as the departure date nears. If you choose to wait, flights could also be booked solid or the best seats taken (we hope you like the middle seat!). If you'd rather err on the side of caution, book well in advance of your departure date. It's worth noting that some of the best deals can be found up to a year in advance. If your preferred carrier hasn't released its airfares yet, check back regularly as offers are constantly updated on Expedia.
What airports do you fly into for Washington from St. Louis?
From St. Louis, you can get to Washington through Washington Dulles Intl. Airport (IAD), Ronald Reagan Washington National Airport (DCA) and Baltimore Washington Intl. Thurgood Marshall Airport (BWI). It's a good idea to check which airport works best for you before making your decision. If you decide on Washington Dulles Intl. Airport (IAD), it's around 40 kilometers west of the city center. Use the money you save when booking your journey with Expedia to discover the city's awesome attractions, such as White House and United States Capitol.
Can I change the date of my flight from XLS to Dulles Intl. Airport?
Quickly make changes to your XLS to Dulles Intl. Airport trip through the Expedia Trips portal. But before doing so, check out the rules in your itinerary to find out what you're able to do and if any charges apply. Some airlines charge a change fee per person, in addition to any difference in airfares. But if you booked in the last 24 hours, you may be able to cancel for free and arrange new flights. You can also check out our Customer Service portal for more advice and to chat with our Virtual Agent.

Travel information

Travel information

Origin airport
St. Louis
Destination airport
Washington Dulles Intl.
Distance
6364 km

Book with confidence

Book with confidence

St. Louis to Washington Flights

Whether you’re looking for a grand adventure or just want to get away for a last-minute break, flights from St. Louis to Washington offer the perfect respite. Not only does exploring Washington provide the chance to make some magical memories, dip into delectable dishes, and tour the local landmarks, but the cheap airfare means you won’t bust your budget. So no matter whether your ideal itinerary involves flying one way, non-stop, or round trip, you’re bound to find flights that match your schedule on Expedia, and at prices that won’t shock your wallet.

Bagging a cheap flight from St. Louis to Washington may mean more dollars to spend on for one-of-a-kind souvenirs when you arrive, but it doesn’t mean you have to skimp on your travel experience, as Expedia offers a sizzling selection of cheap airlines that’ll put you in your happy place on their planes, whether that’s getting lost in a hair-raising airport thriller, dreaming on the passing landscape over a glass of bubbly, or jotting down your vacation bucket list at 38,000 feet. There’s also bound to be plenty of opportunities to snap a few photos of the high life that will make your friends green with envy. After all, enjoying the journey is part of the fun.

With so many affordable flights and so many wonderful adventures awaiting you, there’s no reason to put off booking a fantastic flight from to today. So don’t leave it to the last minute to make your dream trip a reality: pack your bags with your go-to travel accessories, put together your list of must-see attractions and can’t-miss activities, and get ready to broaden your horizons – with Expedia, the wonders of Washington are only a plane trip away. Book your travel arrangements with us today!

If you would like to book flights to Washington more flexibly many prefer to purchase one-way tickets with options to take different airlines. A one way ticket to Washington is now!

St. Louis to Washington Flights