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Find cheap flights from St. Louis to the United States from $35

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 5/15. 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
Sa 5/18
Sa 5/25

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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
Newark1 stop$175
Los Angeles
Los Angeles1 stop$103
Orlando
Orlandononstop$60
Las Vegas
Las Vegasnonstop$83
Miami
Miami1 stop$95
San Francisco
San Francisco1 stop$108
Chicago
Chicagononstop$91
Boston
Boston1 stop$99
Washington, D.C.
Baltimore1 stop$99
Denver
Denvernonstop$53
Seattle
Seattle1 stop$115
Fort Lauderdale
Fort Lauderdalenonstop$87
Atlanta
Atlanta1 stop$95
Dallas
Dallasnonstop$68
Tampa
Tampa1 stop$113
Houston
Houston1 stop$95
Honolulu
Honolulu2 stops$506
San Diego
San Diego1 stop$89
Philadelphia
Philadelphia1 stop$73

Good to know

Low season

January

High season

March

Cheapest flight

$35
Best time to beat the crowds with an average 12% drop in price.
Most popular time to fly with an average 11% increase in price.
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 $171 one-way - $340 round-trip; Dallas $199 one-way - $395 round-trip; Chicago $220 one-way - $602 round-trip
  • Morning departure is around 3% more expensive 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 11104 reviews
7.5food
8.0entertainment
8.2boarding
7.9comfort
8.6crew
Airline reviews

Everything was great except for the seat. The backrest would not stay in the upright position.

8.0 ExcellentEddie, Apr 2024SEA - PHX
Read more about Delta reviews

Everything was great except for the seat. The backrest would not stay in the upright position.

I usually have a positive experience with Delta. Complimentary upgrades are always nice!

Flight delayed about 2 hrs so it made it a VERY late night

It was a crowded flight. They did the best they could.

Service was good for such a short flight. Small plane but smooth flight.

Worst flight in my life. Only was scheduled for a 45 min flight to get our connection flight. It was late by 40 minutes and we missed our connection. Delta was totally useless trying to help and unable to get my family on the next flight because they overbooked it Thus had to get a hotel at my expense and lost a day at Disney as a result. Cost me about a $1000 if you add 2 hotels meals shuttles etc to get thru the day Awful customer service by Delta in Detroit totally useless people

The experience was good and the flight departed on time and landed early

The flight was delayed but we got to our final destination.

Boarding was great. The flight landed early. It took the crew over an hour and a half to bring out drinks. I paid to upgrade my seat to Comfort+ only to be near a crying/screaming baby who was seldom quiet. Noise-cancelling earbuds didn’t even help. Waste of money to upgrade.

Seats in first class on the E175 recline too far back. I was in 2A, and the man in 1A fully reclined almost the entire flight. It took 6-7 inches of space away from me and made it very difficult to work on my laptop.

The delays (5 hrs) were a comedy of errors, and the multiple safety issues encountered were very concerning.

flight delays, staff only communicating when pushed, food service lasting a grand total of 7 minutes, stuck in seat from 45mins into flight until landing

Crew was great and did their best to make us comfortable and captain came out at the beginning to announce why the flight was delayed, weather situation up ahead, and kept us updated throughout the flight.

they made me check my carryon. There was space in the overhead bins.

Nice flight, nice crew but no cookie or napkin with my seltzer.

Trip was smooth bumpy from the wind but no issues at all the crew attendant was very pleasant and had great customer service

This was a Lufthansa flight. Disappointing main meal. Very rough over Canada and arrival at FRA. IFE was almost unusable.

It got me where I needed it to; not much more. It had no competition so that was why I chose it.

I liked everything about the flight. The service was excellent!

The customer service was excellent! Check-in, baggage check-in, boarding, the flight went very smooth.

Plane took off without me, my stepdad and a dozen other passengers. It went from an hour delay to boarding in 15 montures without notifying anyone. Names were not called overhead. Now I’m missing a day of work and stuck in Charolette overnight paying for a hotel and Ubers out of pocket

I arrived to the airport 2 hours before my American Airlines flight was scheduled to take off. I have TSA pre-check. The airport was crazy packed when I arrived. After momentarily standing in the pre-check line, the TSA agent said that I am not pre-check. Of course I said that I am because I entered my KTN number on all my traveling sites and programs. I had to get out of line and go back to the AA counter to discover that American Airlines did not add my KTN to my boarding pass. I had to call TSA to find out my number, then have AA enter it onto my boarding pass. The emblem would not load onto my boarding pass. By this time, I decided to use my Clear in order to get through TSA but the line was ridiculous long. By the time I made through TSA, I missed my 11:08am flight and was re-booked for the 5:30pm. This is after the AA employee told me I should have gotten to the airport early. AA use to be a dependable airline not I use them only if I have too.

Average - flew with Jet Blue internal and it was far more comfortable and better food and entertainment. Notable difference

Flight from SBP to DFW 1. They rerouted us through PHX 2. Delayed flight out of SBP for 3 hrs so we missed our connection Downgrade on rerouted flight. Back of the plane, center seats, didn't sit together 4. Return flight out of DFW same exact thing. Delayed, missed connection, Downgrade + they lost our luggage! A complete mess.

On the new 319 NEO? seatback entertainment system did not work even when the flight attendant rebooted it. At least I had my cell phone to connect with wifi.

Good flights. Departure and arrivals were on time. DFW was a little problematic in that the Skytrain without prior notice bypassed the Echo terminal so that delayed my arrival at my connecting flight.

Do not eat the bagel! Otherwise, good albeit late, breakfast in first. Boarding downgrade only because flight was delayed due to plane change due to undisclosed problem with original aircraft. I did not use entertainment.

Because I can’t stand very long in one place, I was allowed to reword.

It was a good flight. Of course it was full, but it went well.

Overall the flights pretty good. The snacks we’re good and they were plenty of them. Both boarding and deplaning went quickly.

On time and fast. Overall it was a pleasant experience.

The weight limit per bag was really low - 40 lbs - so we had to pay extra. Then, they said their carry on size was 14x18x8, and we measured our bag very carefully. It was within the limit, yet they said it was too big, so we ended up paying an extra $100 for that too!! So it wasn’t the cheap flight we thought it would be. Then, they moved up our initial flight to depart 3 hours earlier which meant we had to be out on the road by 7 am and then have a 6 hour layover and we got home at 2am. It was a grueling day. I won’t be flying with them again.

Overall it was a good experience. Stewards were very kind and professional. The departure and arrival times were as promised. Plane was clean.

The seat are terrible. Don’t even think of sleeping on a Spirit flight. The kids that run the plane aka flight attendants are pretty rude and straight forward. They get the job done but without class.

No frills, limited comfort, no food, no entertainment, but fine

I had a death in my family and booked my flight on Spirit. My flight was cancelled the morning of my flight, no explanation, no help to rebook, nobody to talk to. The next available flight was 2days later !!!! Terrible airline, will NEVER fly with them again!

Flight was canceled. Knew there was weather, and were notified of 20 min delayed, and then suddenly canceled. Next reschedule was for 2 days. No help other than to refund. Thankfully full refund and appreciate that. I appreciate discounted airline but felt they could've done more for customer inconvenience.

The seat was very uncomfortable from Boston to Nashville. Otherwise the flight was excellent.

Terrible as usual!!!! Very unprofessional and rude flight attendants! You get what you pay for! HORRIBLE

There was a .79 discrepancy between the cost of the flight and what was paid. Spirit didn't let me obtain my boarding pass until the .79 (seventy nine cents) was paid. Contacting their customer service to resolve the issue was a nightmare that involved many wait minutes and two different departments. The price Kayak gave to Affirm, whom I used to pay for the tickets, and the price Spirit charged for the flight were off by the .79. I almost lost the ticket because of the hassle.

Not have to pay for every single item to take a flight. Seating and delays sucked.

Flight was cancelled and I had to spend the night in the airport lugging my suitcase around

If you don’t check in 24 hours in advance, they will charge you $110 to check your bag instead of the $30. I did not get an email with this information and did not check in. In addition, my flight home was cancelled at layover and I had to spend the night in the airport, and then have another layover at another airport before making it home. Will not fly frontier again.

Terrible. Seats are bad and the baggage policy is inconsistent

Flight delayed 3 times, resulting in late arrival, rental car place gave car away resulting in increased BS charges because I was late. Frontier blows.

I paid for extra leg room. The flimsy plastic seat underneath the floatation seat did not line up with the arm rests. It seemed as if the plastic part was zip tied on but immovable. This caused severe uncomfortable for the duration of the flight.

Left Denver late, then sat on tarmac 30 min after arrival

Better than I expected but I did pay for a seat and carry on bags ahead of time.

Crew members are very rude and not cooperate with passengers.

30 minute delay due to boarding and settling of a family.

Book cheap flights from St. Louis to the United States

Recent round-trip flight deals

5/1Mi
nonstopFrontier
2h 31mSTL-DEN
5/7Di
nonstopFrontier
2h 05mDEN-STL
$53
5/4Sa
nonstopFrontier
2h 31mSTL-DEN
5/7Di
nonstopFrontier
2h 05mDEN-STL
$56
5/2Do
nonstopSpirit Airlines
2h 30mSTL-MCO
5/5So
nonstopSpirit Airlines
2h 38mMCO-STL
$73
5/15Mi
1 stopSpirit Airlines
9h 44mSTL-MCO
5/18Sa
nonstopSpirit Airlines
2h 24mMCO-STL
$93
5/7Di
nonstopAmerican Airlines
1h 56mSTL-DFW
8/28Mi
nonstopAmerican Airlines
1h 49mDFW-STL
$179
5/8Mi
1 stopAmerican Airlines
8h 04mSTL-SEA
5/17Fr
1 stopAmerican Airlines
7h 13mSEA-STL
$184
8/1Do
1 stopDelta
6h 32mSTL-DFW
8/5Mo
1 stopDelta
5h 45mDFW-STL
$198
6/12Mi
1 stopDelta
6h 58mSTL-DEN
6/19Mi
1 stopDelta
5h 04mDEN-STL
$198
5/8Mi
nonstopUnited Airlines
2h 29mSTL-EWR
5/11Sa
1 stopUnited Airlines
6h 46mEWR-STL
$268
9/4Mi
nonstopUnited Airlines
2h 25mSTL-EWR
9/19Do
nonstopUnited Airlines
2h 42mEWR-STL
$274

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Recent one-way flight deals

5/15Mi
nonstopFrontier
2h 31mSTL-DEN
$35
7/15Mo
nonstopFrontier
2h 16mSTL-DFW
$39
4/29Mo
nonstopSpirit Airlines
3h 30mSTL-LAS
$41
6/13Do
nonstopSpirit Airlines
2h 39mSTL-MCO
$42
5/29Mi
1 stopDelta
6h 44mSTL-DEN
$79
5/14Di
nonstopAmerican Airlines
1h 56mSTL-DFW
$90
7/16Di
1 stopDelta
6h 24mSTL-DEN
$99
5/16Do
nonstopAmerican Airlines
1h 56mSTL-DFW
$105
5/13Mo
nonstopUnited Airlines
2h 29mSTL-EWR
$160
5/25Sa
nonstopUnited Airlines
2h 22mSTL-EWR
$165

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Last minute flights from St. Louis to the United States

Last minute flight, train and bus deals

4/20Sa
nonstopFrontier
2h 30mSTL-MCO
4/27Sa
nonstopFrontier
2h 51mMCO-STL
$95
4/22Mo
nonstopFrontier
3h 43mSTL-LAS
4/24Mi
nonstopFrontier
3h 08mLAS-STL
$110
4/21So
nonstopSpirit Airlines
2h 30mSTL-MCO
4/28So
nonstopSpirit Airlines
2h 38mMCO-STL
$126
4/20Sa
nonstopSpirit Airlines
2h 27mSTL-MCO
4/23Di
nonstopSpirit Airlines
2h 32mMCO-STL
$143
4/23Di
multi-stopAmerican Airlines
9h 57mSTL-SEA
5/7Di
multi-stopAmerican Airlines
8h 10mSEA-STL
$238
4/23Di
multi-stopDelta
7h 21mSTL-SEA
5/6Mo
multi-stopDelta
8h 30mSEA-STL
$262
4/23Di
multi-stopAmerican Airlines
9h 23mSTL-SEA
4/26Fr
multi-stopAmerican Airlines
8h 56mSEA-STL
$263
4/19Fr
multi-stopDelta
7h 44mSTL-SEA
4/20Sa
multi-stopDelta
8h 16mSEA-STL
$320
4/23Di
multi-stopUnited Airlines
11h 23mSTL-SEA
5/7Di
multi-stopUnited Airlines
7h 08mSEA-STL
$357
4/23Di
multi-stopUnited Airlines
11h 23mSTL-SEA
4/26Fr
multi-stopUnited Airlines
7h 56mSEA-STL
$403

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St. Louis - United States Flights

Departure:

St. Louis (STL)United States

Return flight deals:

United States - St. Louis

Cabin classes:

$294
$559
$483
$58

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