$64 Find Cheap Flights from Missouri to the United States

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Good to know

Low seasonJanuary
Cheapest flight$64
Best time to beat the crowds with an average 7% drop in price.
Most popular time to fly with an average 2% 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 Airlines
STL
-
SEA
Jun 2025
Don’t get to the airport too early. Security is fast and lines are typically short!
valerieFlew with Air Canada
STL
-
ORD
Jan 2025
Usually it is unreliable - always leave lots of time for connection.
LauraFlew with Spirit Airlines
STL
-
FLL
Sep 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 (1,229 flights per week), American Airlines (723 flights per week), and United Airlines (609 flights per week).

  • How many airports are there in the United States?

    There are 586 airports in the United States. The busiest airport is Hartsfield-Jackson Atlanta Airport (ATL), with 8% 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 Tampa Airport (TPA), with an average flight price of $179.

  • 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 $357. On the other hand, the most expensive day to fly is Sunday, where round-trip prices are $457 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 at night, when round-trip flights cost $335 on average. Morning departures are around 12% 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 $423.

  • 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 Dallas/Fort Worth Airport, at $123 round-trip. The most popular route is Kansas City (MCI) to Atlanta (ATL) and the cheapest round-trip airline ticket found on this route in the last 72 hours was $139.

  • 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 $403 (return) on average. On the other hand, the most expensive months are January and November, when the average cost of round-trip tickets is $659 and $599 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 4 weeks before departure, which saves you about 22% compared to booking last minute. For the absolute cheapest price, our data suggests you should book 9 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 3,135 direct flights each week.

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

    There are around 1,000 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 7,000 direct flights from within Missouri to the United States. The most common day for departures is Sunday, with 17% 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 37m, covering a distance of 993 miles. The shortest route is St. Louis (STL) to Chicago O'Hare Intl Airport (ORD) with an average flight time of 1h 24m.

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

    Each week, there are 318 medium-haul flights (3-6 hour flight duration) and 6,682 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 (12% of total searches to the United States). The next most popular destinations are Seattle (9%) and Las Vegas (7%). Searches for flights to Orlando (6%), to Washington, D.C. (6%) and to Houston (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 4331 reviews
7.5Entertainment
8.1Boarding
8.6Crew
8.0Comfort
7.0Food
Airline reviews

I have roller bag with food and medication told me I couldn't bring on my 2nd flight today. 15 years flying with SW never an issue with that bag.

2.0 MediocreStuart, Mar 2026
HOU - STL
Read more Southwest reviews

I have roller bag with food and medication told me I couldn't bring on my 2nd flight today. 15 years flying with SW never an issue with that bag.

Southwest continues to do less for more money. Flight attendants used to be fun and friendly. But now it’s like they don’t even see you. Such a shame.

Great flight. Good snacks and drinks. Grateful it was free. The flight from Nashville to louisville, i think her name was Tracy (not sure that's right) super awesome, nice and cheerful. She really enjoyed being at work today! She was the person who scanned the boarding pass on flight wn941. She should be recommended for a raise !

I liked it better when you were truer to your roots Am paying more for less fun

Southwest was greaat! The most expensive but the least upsetting for those we were flying to see.

I flew twice this week on Southwest, was delayed over 2 hours both ways. From Pittsburgh to Chicago it was due to weather but the gate agents, pilot etc were great at updating everyone. Today from Midway to Pittsburgh the plane had come from an international location, kept getting delayed, no information was given until we were delayed for the third time. It was ridiculous, whoever scheduled that plane to fly to Pittsburgh after didn’t consider a lot of things.

Boarding was easy. The seats are small and fairly uncomfortable

I was supposed to be on a later flight. When I showed up at the gate, the woman working there was extremely helpful getting moved up to this earlier flight.

We had a 5 hour delay on the tarmac in Baltimore

Long layover between flights to Long Island from BWI - need better coordination between flights

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 $269
Premium Economy Class flights to the United Statesfrom $190
Economy Class flights to the United Statesfrom $72