Cheap flights from St. Louis to District of Columbia from $61
This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from St. Louis to District of Columbia departing on 2/22. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
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Cheap round-trip flights
These are some of the best round-trip flight deals from St. Louis to District of Columbia that have been recently found on momondo from popular airlines, departing in the coming months.
Cheap one-way flights
Flying one-way? These are some of the best deals recently discovered on momondo for flights from St. Louis to District of Columbia.
Cheap last minute flights
Planning a quick getaway from St. Louis to District of Columbia? These are the last-minute flight deals available now.
Cheap direct flights
If you prefer a non-stop journey, check out our latest direct flight deals to District of Columbia, so you can enjoy a seamless trip without layovers.
Cheap bus & train deals from St. Louis to District of Columbia
Find recent round-trip train or bus tickets from St. Louis to District of Columbia.
All round-trip flight deals from St. Louis to District of Columbia
The cheapest plane tickets from St. Louis to District of Columbia found on KAYAK recently.
Frontier flights from St. Louis to District of Columbia
Our best Frontier deals on St. Louis to District of Columbia flight tickets
Frontier![Frontier]()
Mar 10![Frontier]()
Mar 17
STL5:24 pmLambert-St Louis
22h 30m
1 stop
IAD4:54 pmWashington, D.C. Dulles Intl
IAD6:03 pmWashington, D.C. Dulles Intl
6h 46m
1 stop
STL11:49 pmLambert-St Louis
Frontier![Frontier]()
Feb 25![Frontier]()
Mar 1
STL5:20 pmLambert-St Louis
22h 53m
1 stop
IAD5:13 pmWashington, D.C. Dulles Intl
IAD6:03 pmWashington, D.C. Dulles Intl
6h 40m
1 stop
STL11:43 pmLambert-St Louis
United Airlines flights from St. Louis to District of Columbia
Our best United Airlines deals on St. Louis to District of Columbia flight tickets
United Airlines![United Airlines]()
Feb 19![United Airlines]()
Feb 25
STL8:25 amLambert-St Louis
2h 09m
IAD11:34 amWashington, D.C. Dulles Intl
IAD5:47 pmWashington, D.C. Dulles Intl
6h 45m
1 stop
STL11:32 pmLambert-St Louis
United Airlines![United Airlines]()
Feb 26![United Airlines]()
Mar 4
STL1:00 pmLambert-St Louis
2h 04m
IAD4:04 pmWashington, D.C. Dulles Intl
IAD8:30 amWashington, D.C. Dulles Intl
7h 06m
1 stop
STL2:36 pmLambert-St Louis
See travel insights to District of Columbia from
How to get the cheapest flight ticket from St. Louis to District of Columbia
Look no further. We've gone through all the searches for this route on momondo so you have the important information and insights to find the cheapest flight ticket for your trip
Prices
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Other information
What is the cheapest month to fly to District of Columbia?
In general, November is the cheapest month to fly from St. Louis to District of Columbia. Due to it being the ‘off-season’ during this time, you can expect flight prices to be around $239. If you don’t want to visit District of Columbia in November, then you should wait until February to fly from St. Louis, when ticket prices are also cheap, with an average price of $253.
What is the cheapest day to depart on your flight to District of Columbia?
The cheapest day to depart on your flight to District of Columbia is on a Wednesday when prices can be found for as low as $237. This is often the case because there is less demand to fly during this day of the week. On the other hand, Sunday is the most expensive day to depart from St. Louis because it is more convenient for both business and leisure travelers. As a result, prices tend to be around $325.
What is the cheapest time of day to depart on your flight to District of Columbia?
Flying to District of Columbia from St. Louis in the evening is the least expensive time of day to depart. momondo users have found prices as low as $257 when looking at flights departing in the evening. Flights to District of Columbia are more costly at noon, with an average ticket price of $304. Departure times at noon fall within the peak daily travel times, which is why tickets can be more expensive.
What is the cheapest Lambert-St Louis to District of Columbia flight route?
Fly from Lambert-St Louis to Washington, D.C. Reagan-National for the best Lambert-St Louis - District of Columbia flight prices
How far in advance should I book a flight to District of Columbia?
You are more likely to see cheaper flights to District of Columbia from St. Louis when booking 12 weeks ahead of your departure date. In general, you can expect to find flights to District of Columbia for around $354 when searching 12 weeks out.However, flight prices might be lower outside of this timeframe. For example, people recently found flights to District of Columbia from St. Louis for as low as $278 on momondo.
What cabin class options are available on Lambert-St Louis to District of Columbia flights?
There are 4 cabin classes available to choose from on Lambert-St Louis to District of Columbia flights. Cabin price and availability will vary by airline so perform a search above to find the right deals for you.
What is the cheapest airline that flies from Lambert-St Louis to District of Columbia?
Frontier, American Airlines, and United Airlines are the most popular carriers operating from Lambert-St Louis to District of Columbia
What airlines fly to District of Columbia?
American Airlines, United Airlines and Southwest are the top three most popular airlines that fly to District of Columbia from St. Louis according to our data. American Airlines is the first choice among our users, with 58% of people opting to fly with this airline when traveling to District of Columbia. Keep in mind that there are 5 different airlines that fly to District of Columbia on a routine basis, so you have a few additional options to choose from.
How many flights depart from St. Louis to District of Columbia on average per day?
11 flights are operational daily from St. Louis to District of Columbia as of January 2025. The most popular departure time for this route is 8:00AM, with 51% of flights per day taking off at noon.
How many flights depart from St. Louis to District of Columbia on average per week?
The number of flights available between St. Louis and District of Columbia is 81 per week as of January 2025. The most frequent departure day is Mon, with 17% of weekly flights leaving on this day.
Cheap St. Louis to District of Columbia flight deals and tips
Find info about flight duration, direct flights, and airports for your flight from St. Louis to District of Columbia
Best Price Found | $61 |
|---|---|
Fastest flight time | 1h 54m |
Direct flights | Every day |
Airports in District of Columbia | 2 airports |
When did momondo last update prices for flights from Lambert-St Louis Airport to District of Columbia?
Prices for flights from Lambert-St Louis Airport to District of Columbia refresh daily.
How many operators does momondo search for flights from Lambert-St Louis Airport to District of Columbia?
As of January 2025, there are 4 operators available to choose from for flights from Lambert-St Louis Airport to District of Columbia.
How old do you have to be to fly from Lambert-St Louis Airport to District of Columbia?
Although the minimum age for a child to fly alone is five, airlines that offer an unaccompanied minor (UMNR) service may have their own age limits, which could be impacted by factors such as flight length, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from Lambert-St Louis Airport to District of Columbia.
What documentation or ID do you need to fly to District of Columbia?
The travel and health documents you'll need for your trip to District of Columbia may differ based on your itinerary and personal situation. Typically, you should have several documents on hand, such as a national ID card or driver's license and a passport that is valid for six months after your intended arrival at District of Columbia. It is always advisable to seek advice from your airline or a trusted third party, such as IATA.
What is the most popular plane model from St. Louis to District of Columbia?
Based on momondo bookings for flights between St. Louis and District of Columbia, the leading plane model is Boeing 737 MAX 8, making up 17.84% of the total bookings. Other popular models include Boeing 737-700 Passenger/BBJ1 (winglets) with 17.38%, Canadair (Bombardier) Regional Jet CRJ-550 with 15.95%, and Canadair (Bombardier) Regional Jet 700 with 14.16%.
Best airlines flying from St. Louis to District of Columbia
Compare and see reviews for airlines that fly from St. Louis to District of Columbia with momondo
| Airline | Rating | Free Cancellation | Price | ||
|---|---|---|---|---|---|
| PriceFrom $98 | Free Cancellation | Rating 6.0 3,441 reviews | |||
| PriceFrom $129 | Free Cancellation | Rating 7.2 10,000 reviews | |||
| PriceFrom $177 | Free Cancellation | Rating 8.0 8,512 reviews | |||
| PriceFrom $200 | Free Cancellation | Rating 8.1 4,654 reviews | |||
| PriceFrom $211 | Free Cancellation | Rating 7.4 8,975 reviews |
Why use momondo?
Why should I use momondo to find a flight deal from St. Louis to District of Columbia?
momondo compares prices from hundreds of airlines and agents so you can find and book the best deal on flights from St. Louis to District of Columbia. Millions of users trust and use momondo every year so you are in good hands.
Can I find flights from St. Louis to District of Columbia with flexible booking policies on momondo?
Flights from St. Louis to District of Columbia with flexible booking policies can be found by using the search form above and then selecting our dedicated flexible booking filter, which will highlight only the flights where this policy is applied.
How can momondo help me find flights from St. Louis to District of Columbia?
momondo provides multiple filters to help you find the best flight to District of Columbia from St. Louis. Filter by price, airline, airports, cabin, aircraft, payment method, number of stops and more.
I’m not ready to book a flight from St. Louis to District of Columbia right now. Can momondo alert me if prices change?
Of course. momondo tracks the price of St. Louis to District of Columbia flights. All you need is a valid email address and we will do the rest; it is that quick and easy.
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