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Cheap flights from Saint Louis to Washington
from 181 US$

From 105 USD — compare hundreds of airlines

We search 100+ flight sitesDirect flights~1h 56mReturn route: Washington → Saint Louis

The cheapest month is usually 2026-10 · 181 US$

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Live fares from 100+ sites — free, with no hidden fees.

About this route

Compare flights from Saint Louis to Washington, a about 1,141 km route (around 1h 56m nonstop). We gather live prices from hundreds of airlines and agencies so you can find the cheapest and book on the official site, with no hidden fees. Direct flights are available. Airlines such as American Airlines, United Airlines, Southwest Airlines operate this route.

Nonstop time
1h 56m
Distance
1,141 km
Stops
Nonstop
Airlines
3+

When to buy and when to fly

Prices by date

Fares found by date — cheapest days in green.

See prices for my dates →
181 US$
03/10
184 US$
04/10
184 US$
05/10
184 US$
06/10
184 US$
07/10
187 US$
08/10

How to get the best price

1The sticker price is real — but it moves fastLow fares last hours or days. If the number works, search it today; waiting rarely improves it.
2Buy 4–8 weeks aheadThat window usually holds the best fares; holidays call for even more margin.
3Flexibility = moneyShifting departure 2–3 days can move the fare 100+ US$. Tuesdays and Wednesdays tend to be cheap.

Airlines on this route

American AirlinesUnited AirlinesSouthwest Airlines

FAQ

What's the cheapest month to fly Saint Louis to Washington?

It's usually 2026-10, from 181 USD. Use the price calendar to compare other dates.

How long is the flight from Saint Louis to Washington?

A nonstop flight takes about 1h 56m and covers around 1,141 km. Connecting itineraries take longer.

Are there direct flights from Saint Louis to Washington?

Yes, this route has nonstop flights. Filter by "nonstop" to see them.

Which airlines fly from Saint Louis to Washington?

American Airlines, United Airlines, Southwest Airlines operate this route, among others. Compare them all in the results.

When should I book Saint Louis–Washington flights?

As a rule of thumb, booking 3–8 weeks ahead and avoiding weekends and holidays tends to give the best prices. Use the calendar to spot the cheapest dates.

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Saint Louis → Washington · Live fares from 100+ sites — free, with no hidden fees.

Search flights →Return route: Washington → Saint Louis

Flights to this destination from other cities

Moscow → WashingtonMunich → WashingtonDakar → WashingtonBogota → WashingtonZurich → WashingtonCopenhagen → WashingtonChicago → WashingtonQuebec → WashingtonMontreal → WashingtonVienna → Washington

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Return route: Washington → Saint Louis →Washington · Travel guide →All flights from Saint Louis →