$32 Find Cheap Flights from Missouri to the United States

1 adult
1 adult, Economy, 0 bags

KAYAK searches hundreds of travel sites at once for deals on flights to the United States

Travelers love KAYAK
41,299,237 searches in the past 7 days on KAYAK

Save 24% or moreCompare multiple travel sites with one search.

Track pricesNot ready to book? Create a price alert for when prices drop.

Free to useThere are no hidden charges or fees.

Filter your dealsChoose cabin class, free Wi-Fi and more.

Useful Info

Good to know

Low seasonSeptember
Cheapest flight$32
Best time to beat the crowds with an average 10% drop in price.
Most popular time to fly with an average 12% increase in price.
Flight from St. Louis to Denver

Flights from Missouri to the United States: the best tips from KAYAK users

Insights shared by verified travelers who flew the route from Missouri to the United States 
Learn how KAYAK collects reviews and tips from users.
JeffreyFlew with Alaska AirlinesSTL-SEAJun 2025
Don’t get to the airport too early. Security is fast and lines are typically short!
valerieFlew with Air CanadaSTL-ORDJan 2025
Usually it is unreliable - always leave lots of time for connection.
LauraFlew with Spirit AirlinesSTL-FLLSep 2024
If you have kids, and are in gate C, take advantage of the kids play area. terminal isn't too large and you can walk to the last gate in minutes.

FAQs for booking flights from Missouri to the United States

  • How does KAYAK find such low prices on flights from Missouri to the United States?

    KAYAK is a travel search engine. That means we look across the web to find the best prices we can find for our users. With over 2 billion flight queries processed yearly, we are able to display a variety of prices and options on flights from Missouri to the United States.

  • How does KAYAK's flight Price Forecast tool help me choose the right time to buy my flight ticket from Missouri to the United States?

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight from Missouri to the United States is likely to change within 7 days, so travelers know whether to wait or book now.

  • What is the Hacker Fare option on flights from Missouri to the United States?

    Hacker Fares allow you to combine one-way tickets in order to save you money over a traditional round-trip ticket. You could then fly from Missouri to the United States with an airline and back with another airline.

  • What is KAYAK's "flexible dates" feature and why should I care when looking for a flight from Missouri to the United States?

    Sometimes travel dates aren't set in stone. If your preferred travel dates have some wiggle room, flexible dates will show you all the options when flying from Missouri to the United States up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

  • Which airlines fly most frequently to the United States?

    Missouri and United States are connected by different airlines. The airlines that fly that route the most regularly are Southwest (1,625 flights per week), American Airlines (684 flights per week), and United Airlines (443 flights per week).

  • How many airports are there in the United States?

    There are 581 airports in the United States. The busiest airport is Hartsfield-Jackson Atlanta Airport (ATL), with 7% of all flights arriving there.

  • Which is the cheapest airport to fly into in the United States?

    Prices will differ depending on the departure airport, but generally, the cheapest airport to fly to in the United States is Fort Lauderdale Airport (FLL), with an average flight price of $125.

  • What is the cheapest day to fly to the United States?

    Based on KAYAK data, the cheapest day to fly to the United States is Wednesday where round-trip tickets can be as cheap as $334. On the other hand, the most expensive day to fly is Sunday, where round-trip prices are $430 on average.

  • What is the cheapest time of day to fly to the United States?

    The cheapest time of day to fly to the United States is generally in the afternoon, when round-trip flights cost $309 on average. Morning departures are around 9% cheaper than evening flights, on average. The most expensive time of day to fly to the United States is generally in the evening, which is peak travel time and where the average cost of a ticket is $397.

  • What is the cheapest flight to the United States?

    The cheapest ticket to the United States from Missouri found in the last 72 hours was to Denver, at $78 round-trip. The most popular route is Columbia (COU) to Denver (DEN) and the cheapest round-trip airline ticket found on this route in the last 72 hours was $78.

  • What is the cheapest month to fly from Missouri to the United States?

    The cheapest month for flights from Missouri to the United States is June, when tickets cost $409 (return) on average. On the other hand, the most expensive months are November and October, when the average cost of round-trip tickets is $599 and $590 respectively.

  • How far in advance should I book a flight from Missouri to the United States?

    To get a below average price on the flight from Missouri to the United States, you should book around 2 weeks before departure, which saves you about 25% compared to booking last minute. For the absolute cheapest price, our data suggests you should book 12 weeks before departure.

  • How many cities have direct flights to the United States?

    From Missouri, there are direct flights to the United States from 8 cities. The city with the most direct flights is St. Louis, with 3,138 direct flights each week.

  • How many direct flights to the United States are there each day?

    There are around 952 direct flights from within Missouri to the United States every day. Most flights (52%) depart in the morning.

  • How many direct flights to the United States are there each week?

    Each week there are around 6,664 direct flights from within Missouri to the United States. The most common day for departures is Sunday, with 21% of flights taking off on this day.

  • How long is the flight to the United States?

    An average nonstop flight from Missouri to the United States takes 2h 57m, covering a distance of 1075 miles. The shortest route is St. Louis (STL) to Chicago O'Hare Intl Airport (ORD) with an average flight time of 1h 22m.

  • How many long-haul flights are there to the United States each week?

    Each week, there are 370 medium-haul flights (3-6 hour flight duration) and 6,294 short-haul flights (up to 3 hour flight duration) to the United States. There aren't any long-haul flights (6-12 hour flight duration).

  • What are the most popular destinations in the United States?

    Based on KAYAK flight searches, the most popular destination is New York (19% of total searches to the United States). The next most popular destinations are Las Vegas (7%) and Denver (6%). Searches for flights to Orlando (6%), to Houston (6%) and to Washington, D.C. (5%) are also popular.

Reviews of the top airline flying from Missouri to the United States

 
Need help choosing which airline to fly with from Missouri to the United States? KAYAK airline reviews give an overall score for each airline based on loads of factors, including comfort, boarding, in-flight entertainment and more, to make your decision easier. See airline scores according to verified KAYAK customer reviews.
8.0
SouthwestOverall score based on 4253 reviews
8.1Boarding
8.0Comfort
7.0Food
8.6Crew
7.5Entertainment
Airline reviews

No delays and arrived to destination 30 min early. Staff was super friendly.

10.0 ExcellentIlevba, Nov 2025DCA - DAL
Read more Southwest reviews

No delays and arrived to destination 30 min early. Staff was super friendly.

San Diego airport is brand new, spacious, airy and very smooth checkin at SW baggage drop.

It was rough. The staff was unprofessional, the choice of on board drinks terrible, it was cramped in space at every airport, they always ran out of overhead bin space so they pressured people to check bags for free or we couldn’t leave on the plane— so I did check my bag to help, and they nearly lost my bag. My bag did not arrive on the luggage belt, another man on my flight and I had to waste our time going to the baggage office to search for our bags. I would only fly southwest again if it was my last choice. Also, my flights were consistently delayed over and over again— at one point they straight up told us we were waiting for the pilot to arrive.

Crew could have been friendlier, maybe I'm spoiled by SW crews. In flight wifi was good. Would be nice to have more food offerings on a 4 plus hour flight

Had to get off plane from prior flight even though I had to reboard same plane to continue to my final destination.

Everything a cheap airline should be at normal airline rates.

Plane crashed into a bus or some other vehicle on the ground while pulling out of the gate. No injuries, but wing tip was damaged and returned to gate for “maintenance issues” and we departed 5 hours later because the plane went out of service and new plane was flown in from a nearby airport, Midway.

Ever since Southwest starting charging for bags, passengers don't want to pay to check their bags, so the gate agents have to beg people to check their roller bags now because there's "not enough space". This was a terrible business move by Southwest.

Full cans of soda would be nice. A choice between two snacks would be appreciated.

Tried watching free movie and it kept freezing so I couldn’t finish.

Everything you need to know for your flight to the United States

Cabin class types available on flights to Missouri

Cabin classes available on flights to Missouri. Prices are the lowest found on KAYAK over the last 7 days. Price and availability is not guaranteed.
First Class flights to the United Statesfrom $220
Business Class flights to the United Statesfrom $334
Prem Econ Class flights to the United Statesfrom $252
Economy Class flights to the United Statesfrom $78