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Find cheap flights from St. Louis to the United States from $38

This is the cheapest one-way flight price found by a KAYAK user in the last 72 hours by searching for a flight from St. Louis to the United States departing on 6/19. Fares are subject to change and may not be available on all flights or dates of travel. Click the price to replicate the search for this deal.
1 adult
0 bags
Min 6/30
Min 7/7

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Best United States Flight Deals

Cheapest round-trip prices found by our users on KAYAK in the last 72 hours

New York
New York1 stop$129
Los Angeles
Los Angeles1 stop$136
Orlando
Orlandononstop$57
Las Vegas
Las Vegasnonstop$39
Miami
Miami1 stop$142
San Francisco
San Francisco1 stop$156
Chicago
Chicagononstop$99
Boston
Boston1 stop$148
Washington, D.C.
Baltimore1 stop$141
Denver
Denvernonstop$55
Seattle
Seattle1 stop$137
Fort Lauderdale
Fort Lauderdalenonstop$63
Atlanta
Atlanta1 stop$139
Dallas
Dallasnonstop$58
Tampa
Tampa1 stop$134
Houston
Houston1 stop$134
Honolulu
Honolulu1 stop$439
San Diego
San Diego1 stop$129
Philadelphia
Philadelphianonstop$58

Good to know

Low season

January

High season

May

Cheapest flight

$38
Best time to beat the crowds with an average 5% drop in price.
Most popular time to fly and prices are also 1% lower on average.
Flight from St. Louis to Denver

FAQs - booking United States flights

  • How does KAYAK find such low prices on flights from St. Louis 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 St. Louis to the United States.

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

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to the United States from St. Louis 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 St. Louis 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 to the United States with an airline and back to St. Louis with another airline.

  • What is KAYAK's "flexible dates" feature and why should I care when looking for a flight from St. Louis 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 to the United States from St. Louis up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

See more FAQs

Top tips for finding cheap flights to the United States

  • Looking for a cheap flight? 25% of our users found tickets from St. Louis to the following destinations at these prices or less: Atlanta $194 one-way - $325 round-trip; Charlotte $165 one-way - $327 round-trip; Chicago $202 one-way - $541 round-trip
  • Morning departure is around 9% cheaper than an evening flight, on average*.
*Average of the lowest prices shown in KAYAK’s search results for departures within the next 30 days

Top 5 airlines serving from St. Louis to the United States

 
Need help choosing which airline to fly with from St. Louis 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
DeltaOverall score based on 10430 reviews
8.2Boarding
8.6Crew
8.0Entertainment
7.9Comfort
7.4Food
Airline reviews

Flew first class so everything was great. But maybe because the flights were red eye, no meals were served, just chips. I flew Alaska Air 1st class at 9PM (2 hour flight) and they served beef short rib sliders!

10.0 ExcellentMichael, May 2024SJC - ATL
Read more about Delta reviews

Flew first class so everything was great. But maybe because the flights were red eye, no meals were served, just chips. I flew Alaska Air 1st class at 9PM (2 hour flight) and they served beef short rib sliders!

Had to change aircraft due to a faulty door. Surprisingly it only caused about an hour and a half of delay. Delta handled this situation as well as can be expected.

Awful. Flight was continuously getting delayed and gates kept changing without any reason. Flight was delayed for more then 3 hours

Paid premium for Delta only to be on safe but tired old 767 with ancient cabin in mediocre condition. Poor wifi and horrible inflight entertainment. Hardly a premium experience. Should have flown SW and had fun flight crew and no pretense

Our flight to Zurich was delayed by almost 3 hours, so we missed our next flight. There was no indication it would be delayed this much. We were told the gate had changed and then it apparently took over 2 hours to load the "catering" on the plane. We were not compensated in any way for the trouble.

Rated entertainment as Mediocre as there were major problems with the Infotainment system that took probably a half hour for them to fix.

Your crew could maybe answer the call bell at least one of the times I pressed it. I pressed it first time with 2.5 hours left in our flight bc my partner was hungry and wanted a sandwich. We finally got the sandwich with 40 mins left in the flight.

Delta crushed it. Flight attendant in first was attentive and just never stopped. Honestly one of the best domestic flights I’ve been on.

They were an hour late and they didn’t have my wheelchair for me

The Flight crew didn’t serve us until about 1.5 hours into the flight because of turbulence but after it ended it was fine to move around. They served us water only and snacks and then NEVER, NOT ONE TIME came through to collect trash until right before landing about 1.5 hours later. There was absolutely no need for that. They crew was just standing around talking and visiting with each other and really never tried to see if we might want something besides water or even try to come pick up trash. This is VERY unusual for a Delta flight but it was not what I would have expected for a 4 hour flight.

The flight and boarding were easy peasy. I was traveling with my 4-year-old, so a smooth boarding experience was especially appreciated. My only piece of feedback is really about where our gate was in O'Hare. They've shoved four gates into a tiny corner of the B terminal and there isn't early enough room or seating for everyone. Not United's problem, but did dent the overall experience.

Dinner was okay but the breakfast was not eatable on the flight San Francisco to Zurich.

There was no screens on board AND the WiFi didn’t work. My seat was broken and couldn’t recline so I couldn’t even sleep. The flight attendants didn’t offer anything to make it more comfortable. It was such an old cramped plane, when the person in front of me reclined I couldn’t even open my tray table. All the United ads talk about guaranteeing everyone gets a screen!

The Wi-Fi was unavailable on this flight for some reason.

On time take off…US cabins look tired and need of refresh!

Fantastic. Smooth boarding with an infant. Never experienced it with any other carriers.

This was a Lufthansa flight, not United. The CSA at the counter, Ashley, was not only incompetent, but quite rude. Me and two other PAX waited over 7 minutes standing in front of her and another CSA and they ignored us. We joked that we must have accidently taken invisibility pills. She could have at least said "I'll be with you in a moment, I'm currently....". I could go on about how rude she and the other CSAs were (whispering, not communicating with me, blaming the situation on others, etc.). She would not work for me. Then, she gave me literally the worst seat on the plane. the worst. My seat kept getting bumped (rammed twice by the crew with their carts and about every 5 minutes by someone using the bathroom), listening to the bathroom all night, crowded seat, etc.

My seat was broken. WiFi didn’t work. Gate crew at HOU were rude and condescending. Treated all the passengers badly. Bad experience, United.

First flight of the day… MINIMUM FUEL! 15 minute landing delay at HOU due to fog turned into a 2+ hour delay! Rather than circle, they had to divert to another city to refuel! Sat on tarmac at Austin to refuel. We ALL missed our connections! The crew, including pilots, were clueless. Crew was really a mess. At HOU, Untied employees were exceedingly rude to all. It was pitiful.

An hour and a half late is UNACCEPTABLE. The negative impact to our family is unconscionable. And for the price we were forced to pay...

Nothing, terrible travel experience due to weather and maintenance delays and was left stranded in Austin.

My husband and I pre-ordered our food, but they did not have my husband’s order, and my cheese plate was very average. I asked for a blanket and was told they don’t carry blankets on domestic routs. The flight was on time and smooth!

28 hour delay at Fort Worth/Dallas airport, part due to weather which was unavoidable, but various other reasons - no pilot, no fa, mechanical problem, plane too small, too big, crew out of flying time, seat configuration problems.... endless and hourly updates with a different excuse. Finally told us about 3.00 am, that the flight was delayed to hours later.

Experience was bad. 3.5 hour delay for a 2.5 hour trip. There was no r Transparency about the reason for the delay and it was done 30 mins at a time.

The boarding process and flight were great. However, I waited about 40 minutes for my luggage. It did not come up on the designated belt. Instead, everyone’s bags were on a cart. Not sure what the issue was, but we were not informed until another passenger went looking for her bags and found them.

There were delays on both ends. It made it less than excellent. This plane was great though

AA1537 the AC was not working properly. It was very hot and uncomfortable.

Worst experience flying American Airlines. I fly with them often, so I was super disappointed in the service I received at gate 30 in LGA on May 24, mid-day. The flight was delayed twice. I was patiently waiting in the American Airlines lounge when I received the notice on my app that the plane was boarding 45 minutes before its newly re-scheduled take off of 4 pm (from the orginal 1:45 pm then 3:00 pm). It took me 5 min to travel from the lounge to the gate and when I arrived there at 3:20 flight gate attendant told me the flight had closed and that they announced for passengers multiple times. I showed them the notification on my app and they were really rude and unempathetic. The person who rescheduled my flight at customer service wasn't any happier but was at least helpful in getting me on the next flight.

Flight was 1/2 hour delayed leaving Phoenix. Otherwise it was an average flight. Flight crew on this trip was very nice.

Everything was great except for the wifi was junk. Crew was super friendly and helpful

The plane was not on time for boarding or departure or arrivals.

EVERYTHING WAS WONDERFUL HOSPITALITY THE HELP.THE SEATING FRIENDLY ALWAYS HAVE A GOOD RIDE NOT ONE BAD EXPERIENCE WITH THEM

This was the smoothest flight I have had in awhile. I was also offered an exit row seat for a great upgrade cost and was able to sleep almost thr whole flight due to comfort and a smooth flight. We left on time and arrived on time.

No food not even water offered unless you buy it and no usb in the seat but other than that everything was good

Because our flight from marsh Harbor to Fort Lauderdale was over three hours delayed it caused us to miss our flight in Fort Lauderdale. Because we missed that flight, it cost us nearly $100 apiece for four different travelers which totaled nearly $400. We are seeking a reimbursement for the flight that we missed in Fort Lauderdale Florida.

Flight expected to leave at 6:40 pm ended leaving at 8:00 am the following day. I slept in a cold airport. Never again Spirit for me…

The flight was on time and nice as always for me with spirit but the cabin crew were not good. They left the lights on on a red eye for the entire flight.

This was the return leg of my journey with Spirit Airlines. Despite its reputation, I found no issues as it got me from point A to B safely and without delay, especially with no mechanical delays, which is fantastic in my book! The staff, from ground crew to cabin crew, were all pleasant and hassle-free. The flight was smooth from takeoff to landing. I have absolutely no complaints about this no-frills airline!

I got a one-way, last-minute nonstop flight from PDX to BWI for only $125. Yes, I got nicked $79 more for a checked suitcase and $89 more for the BIG SEAT option, but it was worth it, even with $4.50 for coffee and $10 for a snack (the latter no different than any other airline). The grand total was still less flying on any other airline.

It was the worst ever, i will be filing a lawsuit to get a refund. Our flight was delayed 4 hours so we would miss our connecting flight, we were not rebooked to our destination the same day, we were not offered any options to get home on the same day despite being clear that we absolutely cannot get stranded at night due to family, we were forced to book our own flights on a different airline to get home, and spririt is refusing a refund because our flight wasn't cancelled, only delayed. oh yeah, and they lost our luggage on the first part of the trip and you cannot get a hold of customer service when anything goes wrong, on hold for 30+ minutes. and their app breaks so you can't use that either.

Didn't like anything..entire crew was very rude to everyone on the flight. Plane old and the trays fall down on you the while time you're flying. Charged more for a carry on bag than for the plane ticket itself. Did make it from point a to point b, but worth the extra money to fly with another airline

9 hours of delay!! Was not able to check my luggage that I paid for!!!

It was delayed 9 hours for operational reasons, despite the plane arriving to the airport on time.

I am very disappointed with Frontier Airlines. They cancelled our flight because they couldn't find a crew member, and then didn't get us to our connecting flight. We had to cancel our whole vacation. We were promised flight and hotel vouchers, but they never sent them.

9hrs delay and didn’t provided anything until after flight landed $75 voucher for fiuture travel no meals or anything.

It was ridiculously hard to check in for the flight, and Frontier charged us a LOT of money to have a carry on suitcase, and then told everyone we could not carry on bags and had to check them through at the gate, and didn't refund the extra money we paid to have the suitcase as carry on.

I had a terrible experience with Frontier. I arrived before the 60 minute cut off and was told that Frontier has a two hour window for bags. I was then told the next available flight wasn’t until the end of the day (I had booked a 6am flight). I took a look around and saw other people being told that they could not board their flights or that they had to pay additional fees. I opted to rebook on American Airlines. There’s absolutely no straightforward way to contact Frontier, so this ticket was a complete waste of money. Oh - and the kicker is that the lady lied about the two hour cut off.

Frontier won’t help you at the airport without paying $25. Carry on was $75. Then you get on the plain and every beverage or snack is also a charge. Seats are hard and real packed in. I would never fly them again.

Worst experience I have seen. The flight was cancelled without any reason.

My experience with frontier staff at the Denver airport was absolutely horrible. The manager on duty was even worst if was the worst experience I have ever had, I have never been treated so poorly as a customer in my life! The staff was extremely rude, eye rolls and attitude and then refusal to help me at all. I wish I could never fly frontier again that’s how horrible it was!

Book cheap flights from St. Louis to the United States

Recent round-trip flight deals

8/27Sel
nonstopFrontier
3h 37mSTL-LAS
8/28Rab
nonstopFrontier
3h 17mLAS-STL
$42
6/12Rab
nonstopFrontier
3h 46mSTL-LAS
6/19Rab
nonstopFrontier
3h 12mLAS-STL
$49
8/27Sel
1 stopSpirit Airlines
15h 21mSTL-LAS
8/28Rab
nonstopSpirit Airlines
3h 16mLAS-STL
$64
9/11Rab
nonstopSpirit Airlines
3h 32mSTL-LAS
9/15Min
nonstopSpirit Airlines
3h 19mLAS-STL
$125
6/21Jum
nonstopAmerican Airlines
1h 53mSTL-DFW
6/23Min
nonstopAmerican Airlines
1h 54mDFW-STL
$157
6/29Sab
nonstopAmerican Airlines
1h 55mSTL-DFW
7/6Sab
nonstopAmerican Airlines
1h 46mDFW-STL
$173
7/10Rab
1 stopDelta
5h 20mSTL-DEN
7/24Rab
1 stopDelta
5h 21mDEN-STL
$176
7/9Sel
1 stopUnited Airlines
6h 22mSTL-DEN
7/13Sab
1 stopUnited Airlines
5h 51mDEN-STL
$192
8/25Min
1 stopDelta
5h 24mSTL-DEN
8/30Jum
1 stopDelta
5h 20mDEN-STL
$196
6/26Rab
nonstopUnited Airlines
2h 22mSTL-EWR
7/10Rab
nonstopUnited Airlines
2h 38mEWR-STL
$209

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Recent one-way flight deals

6/19Rab
nonstopFrontier
2h 30mSTL-DEN
$38
6/11Sel
1 stopSpirit Airlines
10h 47mSTL-LAS
$38
6/29Sab
nonstopAmerican Airlines
1h 53mSTL-DFW
$79
7/3Rab
1 stopDelta
8h 41mSTL-DEN
$88
7/2Sel
1 stopUnited Airlines
6h 22mSTL-DEN
$94
6/21Jum
nonstopAmerican Airlines
2h 26mSTL-LGA
$95
6/21Jum
nonstopUnited Airlines
2h 22mSTL-EWR
$95
7/4Kam
1 stopDelta
5h 14mSTL-DEN
$98
6/25Sel
nonstopAlaska Airlines
4h 25mSTL-SEA
$119
6/20Kam
nonstopAlaska Airlines
4h 28mSTL-SEA
$159

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Last minute flights from St. Louis to the United States

Last minute flight, train and bus deals

6/3Sen
nonstopFrontier
2h 31mSTL-DEN
6/6Kam
nonstopFrontier
2h 08mDEN-STL
$96
6/1Sab
nonstopFrontier
3h 48mSTL-LAS
6/11Sel
nonstopFrontier
3h 12mLAS-STL
$106
6/3Sen
nonstopSpirit Airlines
3h 33mSTL-LAS
6/5Rab
nonstopSpirit Airlines
3h 16mLAS-STL
$158
6/3Sen
nonstopSpirit Airlines
3h 33mSTL-LAS
6/10Sen
multi-stopSpirit Airlines
22h 39mLAS-STL
$255
6/4Sel
multi-stopAmerican Airlines
10h 41mSTL-SEA
6/10Sen
multi-stopAmerican Airlines
8h 53mSEA-STL
$273
5/31Jum
multi-stopDelta
5h 58mSTL-SEA
6/1Sab
multi-stopDelta
6h 15mSEA-STL
$276
6/5Rab
multi-stopAmerican Airlines
5h 38mSTL-LAX
6/5Rab
multi-stopAmerican Airlines
6h 14mLAX-STL
$310
6/1Sab
multi-stopUnited Airlines
6h 55mSTL-LAX
6/3Sen
multi-stopUnited Airlines
8h 09mLAX-STL
$318
6/1Sab
multi-stopDelta
7h 22mSTL-SEA
6/5Rab
multi-stopDelta
8h 30mSEA-STL
$357
6/3Sen
multi-stopUnited Airlines
6h 52mSTL-SEA
6/5Rab
multi-stopUnited Airlines
12h 19mSEA-STL
$392

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St. Louis - United States Flights

Departure:

St. Louis (STL)United States

Return flight deals:

United States - St. Louis

Cabin classes:

$524
$231
$394
$39

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