Cheap flights from Washington to St. Louis from $81
This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Washington to St. Louis departing on 4/22. 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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American Airlines flights from State of Washington to St. Louis
Our best American Airlines deals on State of Washington to St. Louis flight tickets
Frontier flights from State of Washington to St. Louis
Our best Frontier deals on State of Washington to St. Louis flight tickets
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How to get the cheapest flight ticket from State of Washington to St. Louis
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
What is the cheapest month to fly to St. Louis?
In general, September is the cheapest month to fly from State of Washington to St. Louis. Due to it being the ‘off-season’ during this time, you can expect flight prices to be around $316. The month of April is another great option to travel to St. Louis, with average flight prices from State of Washington averaging around $338.
What is the cheapest day to depart on your flight to St. Louis?
The cheapest day to depart on your flight to St. Louis is on a Thursday when prices can be found for as low as $398. This is often the case because there is less demand to fly during this day of the week. If your travel schedule is flexible, try to avoid departing on a Sunday because tickets tend to average around $494. These prices are subject to change though, so be sure to set up a Price Alert for flights to St. Louis.
What is the cheapest time of day to depart on your flight to St. Louis?
Flying to St. Louis from State of Washington in the evening is the least expensive time of day to depart. momondo users have found prices as low as $267 when looking at flights departing in the evening. In the morning is when there is more demand to fly to St. Louis, so prices are often more expensive at around $436 per ticket.
What is the cheapest Washington to Lambert-St Louis flight route?
Fly from Seattle/Tacoma Intl to Lambert-St Louis for the best Washington - Lambert-St Louis flight prices
How far in advance should I book a flight to St. Louis?
You are more likely to see cheaper flights to St. Louis from State of Washington when booking 11 weeks ahead of your departure date. In general, you can expect to find flights to St. Louis for around $384 when searching 11 weeks out.However, flight prices might be lower outside of this timeframe. For example, people recently found flights to St. Louis from State of Washington for as low as $315 on momondo.
What cabin class options are available on Washington to Lambert-St Louis flights?
There are 4 cabin classes available to choose from on Washington to Lambert-St Louis 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 Washington to Lambert-St Louis?
Frontier, Delta, and Alaska Airlines are the most popular carriers operating from Washington to Lambert-St Louis
What airlines fly to St. Louis?
Alaska Airlines, Delta and American Airlines are the top three most popular airlines that fly to St. Louis from State of Washington according to our data. Alaska Airlines is the first choice among our users, with 62% of people opting to fly with this airline when traveling to St. Louis. Keep in mind that there are 6 different airlines that fly to St. Louis on a routine basis, so you have a few additional options to choose from.
How many flights depart from State of Washington to St. Louis on average per day?
The number of flights available between State of Washington and St. Louis is 7 per day as of March 2025. The most frequent departure time is 6:00PM, with 60% of daily flights leaving in the evening.
How many flights depart from State of Washington to St. Louis on average per week?
The number of flights available between State of Washington and St. Louis is 54 per week as of March 2025. The most frequent departure day is Mon, with 20% of weekly flights leaving on this day.
Cheap State of Washington to St. Louis flight deals and tips
Find info about flight duration, direct flights, and airports for your flight from State of Washington to St. Louis
When did momondo last update prices for flights from Washington to Lambert-St Louis Airport?
Prices for flights from Washington to Lambert-St Louis Airport are updated daily.
How many operators does momondo search for flights from Washington to Lambert-St Louis Airport?
As of March 2025, there are 6 operators available to choose from for flights from Washington to Lambert-St Louis Airport.
How old do you have to be to fly from Washington to Lambert-St Louis Airport?
The minimum age for a child to fly alone is five, but airlines that offer an unaccompanied minor (UNMR) service may have their own age limitations. Flight duration, scheduling, and layovers are among the considerations that may influence age limits. We recommend that you double-check with the airline you are booking with for travel from Washington to Lambert-St Louis Airport.
What documentation or ID do you need to fly to Lambert-St Louis Airport?
The travel and health documents required for your trip to Lambert-St Louis Airport can vary based on your itinerary and personal situation. As a rule, consider having multiple documents such as a national ID card or driver’s license, and a passport valid for six-months after you plan to arrive at Lambert-St Louis Airport. We always recommend checking with your airline or a trusted third party such as IATA to get advice.
What is the most popular plane model from State of Washington to St. Louis?
momondo data reveals that the most frequently booked plane model on the route from State of Washington to St. Louis is Boeing 737, representing 36.53% of all bookings. The subsequent popular models are Boeing 737-900 Passenger/BBJ3 (winglets) at 20.15%, Boeing 737 MAX 9 at 18.08%, and Boeing 737-800 Passenger/BBJ2 (winglets) at 17.33%.
Best airlines flying from State of Washington to St. Louis
Compare and see reviews for airlines that fly from State of Washington to St. Louis with momondo
| Airline | Rating | Free Cancellation | Price | ||
|---|---|---|---|---|---|
| PriceFrom $141 | Free Cancellation | Rating 6.0 3,318 reviews | |||
| PriceFrom $196 | Free Cancellation | Rating 8.0 8,086 reviews | |||
| PriceFrom $196 | Free Cancellation | Rating 7.2 10,000 reviews | |||
| PriceFrom $216 | Free Cancellation | Rating 7.4 8,691 reviews | |||
| PriceFrom $236 | Free Cancellation | Rating 8.0 9,713 reviews | |||
| PriceFrom $276 | Free Cancellation | Rating 8.1 4,333 reviews |
Traveling to a place near St. Louis?
Book flights to St. Louis if you plan to visit one of these locationsWhy use momondo?
Why should I use momondo to find a flight deal from Washington to St. Louis?
momondo compares prices from hundreds of airlines and agents so you can find and book the best deal on flights from Washington to St. Louis. Millions of users trust and use momondo every year so you are in good hands.
Can I find flights from Washington to St. Louis with flexible booking policies on momondo?
Yes. All flights to St. Louis from Washington on momondo can be compared and filtered by various policies on offer, including flexible booking.
How can momondo help me find flights from Washington to St. Louis?
Once you have performed a search for Washington to St. Louis flights, momondo helps you find the right one by offering useful filters to narrow down your flight selection. Flights can be filtered by multiple factors such as airline, airport and price; but also by other criteria like aircraft type and payment method.
I’m not ready to book a flight from Washington to St. Louis right now. Can momondo alert me if prices change?
Yes momondo offers price alerts on flights to St. Louis from Washington. After performing a search on this page you should be able to see the price alert set up feature. Simply provide a valid email address and momondo will instantly alert you when prices change.