$39 Find Cheap Flights from Missouri to the United States

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Good to know

Low seasonSeptember
Cheapest flight$39
Best time to beat the crowds with an average 10% drop in price.
Most popular time to fly with an average 16% increase in price.
Flight from Kansas City to Phoenix Sky Harbor Airport

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 (1,974 flights per week), American Airlines (935 flights per week), and United Airlines (633 flights per week).

  • How many airports are there in the United States?

    There are 587 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 $134.

  • 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 Thursday where round-trip tickets can be as cheap as $401. On the other hand, the most expensive day to fly is Monday, where round-trip prices are $650 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 $390 on average. Morning departures are around 3% cheaper than evening flights, on average. The most expensive time of day to fly to the United States is generally in the afternoon, which is peak travel time and where the average cost of a ticket is $925.

  • 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 Orlando Airport, at $58 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 $96.

  • 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 February, when tickets cost $238 (return) on average. On the other hand, the most expensive months are June and March, when the average cost of round-trip tickets is $351 and $326 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 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 4,118 direct flights each week.

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

    There are around 1,242 direct flights from within Missouri to the United States every day. Most flights (50%) depart in the morning.

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

    Each week there are around 8,691 direct flights from within Missouri to the United States. The most common day for departures is Sunday, with 18% 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 1094 miles. The shortest route is St. Louis (STL) to Chicago O'Hare Intl Airport (ORD) with an average flight time of 1h 20m.

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

    Each week, there are 519 medium-haul flights (3-6 hour flight duration) and 8,172 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 Orlando (7%) and Houston (7%). Searches for flights to Las Vegas (7%), to Denver (6%) and to Dallas (6%) 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 4258 reviews
8.1Boarding
7.5Entertainment
8.0Comfort
8.6Crew
7.0Food
Airline reviews

They sent a notice that they were boarding an hour early. We had to leave the club and run to the gate. They said sorry, that came from corporate and was a mistake. They did not have enough seating because the flight before it had not taken off on time. They moved our gate and delayed it for an hour.

2.0 MediocreRobert, Dec 2025
LAS - TPA
Read more Southwest reviews

They sent a notice that they were boarding an hour early. We had to leave the club and run to the gate. They said sorry, that came from corporate and was a mistake. They did not have enough seating because the flight before it had not taken off on time. They moved our gate and delayed it for an hour.

The boarding and seat assignment system no longer works for me, but I know it is being replaced. Otherwise, I am good with the overall experience.

The lead steward kept singing about "San Francisco" and hotel California---more annoying than humorous....needs work. Flight was smooth and on time.

Still a fan of open seating. Flight was on schedule and arrived on time. The 737 MAX is very comfortable.

Airline travel is always too cramped to really be pleasant, but the cabin crew on this flight did a pretty good job of making up for it by putting on some music during boarding and sprinkling a few funny remarks into the safety briefing and announcements, and just generally being friendly and helpful. It definitely reminded me of why I prefer the in-flight experience on Southwest!

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 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 $362
Prem Econ Class flights to the United Statesfrom $252
Economy Class flights to the United Statesfrom $58