Worldwide Coverage
Worldwide Coverage
Flights to over 5,000 cities
One-stop Service Guarantee
One-stop Service Guarantee
Price guaranteed upon confirmed payment, booking guaranteed once tickets issued
Secure Payment
Secure Payment
Convenient & reliable booking and payment system

Washington D.C. to St. Louis - Flights Starting at US$59

Book one-way or return flights from Washington D.C. to St. Louis from as little as US$59. Choose from the popular airlines below and book your flight today!

  • One way
  • Round-trip

Crossed out prices are calculated based on the average price of the corresponding route on Trip.com.

When is the cheapest time to book flights from Washington D.C. to St. Louis?

We monitor flight fares to help you find the best deals effortlessly

Displayed prices are calculated based on the cheapest average weekly prices of the corresponding route on Trip.com.
Cheapest airlines flights from Washington D.C. to St. Louis

Compare prices, find the option that best suits your travel needs, and enjoy a comfortable journey with a trusted airline.

Frontier Airlines
From US$59
American Airlines
From US$71
Delta Air Lines
From US$80
Jetblue Airways
From US$84
United Airlines
From US$110
Sun Country Airlines
From US$138
Southwest Airlines
From US$156
Alaska Airlines
From US$316
ANA airlines

Find more flights and airlines

Alternative Routes from Washington D.C. to St. Louis

Discover different routes, airlines, and transfers and find the best alternative flights for your journey from Washington D.C. to St. Louis.

  • Cheapest
    Frontier Airlines
    DCA
    07:00
    9h 50m
    1 transfer
    STL
    15:50
    Ronald Reagan Washington National Airport - St. Louis Lambert International Airport
    Tue, Apr 30Frontier Airlines
    US$59
  • Delta Air Lines
    IAD
    06:00
    6h 56m
    1 transfer
    STL
    11:56
    Dulles International Airport - St. Louis Lambert International Airport
    Sat, Apr 27Delta Air Lines
    US$89
  • Delta Air Lines
    IAD
    06:00
    6h 56m
    1 transfer
    STL
    11:56
    Dulles International Airport - St. Louis Lambert International Airport
    Sat, Apr 27Delta Air Lines
    US$89
    Find More Flights

Frequently Asked Questions

  • When are flight tickets from Washington D.C. (WAS) to St. Louis (STL) the cheapest?

    Airlines adjust prices for flights from Washington D.C. to St. Louis based on the departure date and time of your selection. By analyzing data from all airlines, we've discovered that on Trip.com, you can find the lowest flight prices on Tuesdays, Wednesdays, and Saturdays.
  • How much do flights from Washington D.C. (WAS) to St. Louis (STL) cost?

    According to Trip.com's data, the lowest price is around $340.
  • How long does it take to fly from Washington D.C. (WAS) to St. Louis (STL) and what is the distance?

    It takes around 2 hours 26 minutes to fly from Washington D.C. (WAS) to St. Louis (STL).
  • What is the transportation method from the main airport to downtown in St. Louis?

    • The distance from St. Louis Lambert International Airport to downtown is about 20km. It takes about 40 minutes by taxi.
  • What are the most popular airlines that fly from Washington D.C. (WAS) to St. Louis (STL)?

    Airlines with flights from Washington D.C. (WAS) to St. Louis (STL): American Airlines, Southwest Airlines, United Airlines, Copa Airlines and Avianca.

How to find a cheap flight from Washington D.C. to St. Louis

Wait until the last minute and flight costs are often sky-high. Plan ahead, book the right way, and your savings can soar. We have loads of saving tips to help you find a cheap flight from Washington D.C. to St. Louis. Book your flights at the right time and save more.
1
Book Early
Once prices are gone, they're gone. Lock in deals while you can!
2
Compare Flight Prices
Compare prices on travel agency and airline websites.
3
Look Out for Deals
Check airline and travel agency websites for latest flight deals
4
Check One-way Fares
Buying two cheap one-way flights can sometimes be a better deal than a round-trip.
5
Try Different Dates
Flying during the week, early in the morning, or late at night can help save money.
6
Use the Trip.com App
Save up to £10 per person when booking your flights on Trip.com

Washington D.C. to St. Louis Flight Information

Cheapest nonstop flight price

$58

Cheapest round-trip ticket price

$133

Off-season for travel

December

Peak season for travel

October

Flight distance

1,139.76km

Average flight time

2 hours 26 minutes

Popular airline

American Airlines