$44 Find Cheap Flights from Missouri to the United States

1 adult
1 adult, Economy

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 22% 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 seasonJanuary
Cheapest flight$44
Best time to beat the crowds with an average 8% drop in price.
Most popular time to fly with an average 16% increase in price.
Flight from St. Louis to Las Vegas

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 (1,218 flights per week), American Airlines (586 flights per week), and Delta (457 flights per week).

  • How many airports are there in the United States?

    There are 582 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 Fort Lauderdale Airport (FLL), with an average flight price of $143.

  • 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 Tuesday where round-trip tickets can be as cheap as $346. On the other hand, the most expensive day to fly is Sunday, where round-trip prices are $403 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 $307 on average. Morning departures are around 11% 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 $405.

  • 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 $99 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 $99.

  • 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 March, when the average cost of round-trip tickets is $619 and $601 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 3 weeks before departure, which saves you about 18% 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 2,828 direct flights each week.

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

    There are around 854 direct flights from within Missouri to the United States every day. Most flights (48%) depart in the morning.

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

    Each week there are around 5,972 direct flights from within Missouri to the United States. The most common day for departures is Sunday, with 16% 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 29m, covering a distance of 936 miles. The shortest route is Kansas City (MCI) to Chicago Midway Airport (MDW) 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 250 medium-haul flights (3-6 hour flight duration) and 5,722 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 (8%) and Dallas (5%). Searches for flights to Chicago (5%), to Orlando (5%) 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 4242 reviews
8.6Crew
7.0Food
8.1Boarding
8.0Comfort
7.5Entertainment
Airline reviews

I wish they had movie screens in the headrests. The seats are much improved, more legroom and recently renovated. Bathroom was clean. Staff was outstanding!!

10.0 ExcellentG, Sep 2025LAS - ATL
Read more Southwest reviews

I wish they had movie screens in the headrests. The seats are much improved, more legroom and recently renovated. Bathroom was clean. Staff was outstanding!!

As always, the entire Southwest experience was wonderful, from online booking to flight to baggage retrieval. Very grateful.

The weather could have been better. There was a 40 minute ATC delay in SFO because of marine fog and a micro cell storm delayed landing and take-off at Nashville. The gate was changed 5 minutes from boarding from gate B3 to gate C23 at Nashville airport.

After being assaulted by a flight attendant I was then brushed off as oh well because he long braids didn’t mean to whip me in the eye. I have filed complaints and will see. But like any other issue I’ve had with kayak involved it’s been trash. Last time I’ll be using your app

AC sub par. WiFi not working correctly. Ac sucked. Seats very narrow.

Near 4 hour flight with only 1 service. Had to use call button to request water. Internet and power not working until into flight. Internet would stop working during flight.

Southwest's seats are the least comfortable I have ever sat in.

The cabin was quiet for the redeye flight. The area was clean. The staff was great. The 787 Max was in good condition. Drawbacks were that the seat widths were tight for some passengers. The seat padding was at best average and for a long flight uncomfortable.

Southwest like most American domestic airlines, is a mediocre airline. But it is among the cheapest. Oh well.

My flight was delayed 50 minutes and we were rushed to board to then sit for 15 minutes until the pilot arrived. Unacceptable since we could have waited to board. Also the delayed flight was updated AFTER we boarded to more than the 10 minutes as originally stated.

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 $279
Business Class flights to the United Statesfrom $323
Prem Econ Class flights to the United Statesfrom $252
Economy Class flights to the United Statesfrom $74

Not what you’re looking for? Find thousands of other hotels, flights, car rentals and package deals with KAYAK.