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Find cheap United Airlines flights to St. Louis from $94

1 adult
0 bags
Fri 6/7
Fri 6/14

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Good to know

Low season

January

High season

May

Cheapest flight

$94

Average price round-trip

$447

Good deal round-trip

$347

Good deal one-way

$164
Best time to beat the crowds with an average 1% drop in price.
Most popular time to fly and prices are also 2% lower on average.
Flight from Reagan Washington National Airport to St. Louis
(avg. price over the last 2 weeks)
or less
or less

When to book flights with United Airlines to St. Louis

Average price per month
Flight prices as travel date approaches

FAQs for flying to St. Louis with United Airlines

  • Is United Airlines cheaper than other airlines flying to St. Louis?

    With an average return price of $447, United Airlines is the most expensive airline flying into St. Louis. The cheapest airline flying to St. Louis is Spirit Airlines.

  • Which other airlines fly to St. Louis?

    Along with United Airlines, you can also fly to St. Louis with Southern / Mokulele, American Airlines, Delta, Spirit Airlines, American Airlines, Alaska Airlines, Frontier and Spirit Airlines.

  • How much is a flight to St. Louis with United Airlines?

    On average, United Airlines flights to St. Louis cost $309 for one-way and $447 return.

  • Which airport do United Airlines flights to St. Louis fly into?

    You’ll fly into St. Louis Lambert Airport when flying to St. Louis with United Airlines.

  • Are there any other airlines in Star Alliance that fly to St. Louis?

    Unfortunately, there are no other airlines in Star Alliance that fly to St. Louis.

See more FAQs

Top tips for your flights to St. Louis with United Airlines

  • Looking to fly from the United States to St. Louis with United Airlines? 25% of our users found flights for the following prices or less: From Newark Airport $164 one-way, $347 round-trip.
  • The cheapest flight to St. Louis with United Airlines found on KAYAK in the last 2 weeks departed from Washington, D.C. Dulles Intl Airport and cost $108.

United Airlines customer reviews

7.4
GoodBased on 11,043 verified guest reviews
8.1Crew
7.1Entertainment
7.2Comfort
6.7Food
7.7Boarding
Pros +
Cons -
Traveler rating:
Sort by:
R
6.8 Okay
Pros:The crew was excellent - courteous/aware/friendly. The flight, although 2 hours delayed (9;20pm scheduled departure) was pleasant and smooth. Also, the de-boarding process was surprisingly quick.
Cons:A 2 hour delay at 9:20pm at night is unfortunate yet frustrating experience, especially when we moved our flight up due to a travel warning for EWR (ironically enough, our originally scheduled flight (1922 MCO-EWR). I'm giving an overall OK (instead of good) due to the fact that there were no snacks (although I did not want anything, it didn't go unnoticed) and although there was free inflight entertainment for personal devices, I feel the passengers should have been given free internet access - in my opinion, it would have been the appropriate thing to do. In any case, this experience doesn't change my positive opinion of United.
A
4.6 Mediocre
Cons:The first contact in the airport was quite rude when informing me that I had to measure my suitcase for size. I have carried this suitcase on on every airline for over 10 years....the size got smaller and United got $25.00....not happy. There was NO free movies, no access to TV, flight pattern....nothing and it could not be turned off. ONE cookie for a coast-to-coast flight. What happened to United?
A
10.0 Wonderful
On time departure and arrival.
A
10.0 Wonderful
Pros:Nice smooth flight
Cons:Everything
B
5.6 Fair
Cons:More water, drinks. The food was absolutely horrible.
A
7.3 Good
Pros:Amazing crew
Cons:Tight seats, no access to actual WiFi unless you purchase a yearly or monthly plan
S
4.6 Mediocre
Pros:Ordered the Protein Box, it was ok.. crew members nice.
Cons:The Smell on the flight was unacceptable, I was sitting about a couple rows across the middle bathroom, and it smelled horrible, I had never had an experience like this on any other flight, I fly United many times a year, and this had me really uncomfortable for almost 5 hours, since the flight was delayed almost 1.5 hours while we sat onboard the aircraft at the gate, that had me miss dinner plans too in San Francisco as well. I really hope they can fix that, For the good of the passengers, felt like I was going to be nauseous all the time, and I'm really not someone that complains or takes time to review badly.
N
4.6 Mediocre
Cons:2.5 hour delay. No working bathrooms. Couldn't hear the tv and headphones that they gave out were useless.
A
2.0 Poor
Cons:Purchased tickets 4 months before this flight for a departure time of 6:05pm. Tried to check in and check baggage at 9:30am but was turned away saying I could only check in 3 hrs prior to my flight. Came back at 3:00pm to check-in and they could not find my information. An hour later they find out that they cancelled the flight and moved my departure time to 8:25am for that day. They say they emailed 3 times in May but I never got it (I'm a bit crazy about my email staying clean) so they say it might have went in to my spam folder due to they types of emails they send to customers. They only kept repeating that they notified me so there is nothing they could do. I ended up going to Air Canada to get a flight to PHX the next day. No apology, no help, no hotel for the night...Terrible experience by United. They gave me a customer relations group contact information to follow up with for complaint but since they sent me the 3 emails in May about the change, they have no liability to fix the situation.
A
2.0 Poor
Cons:Departure was delayed. No explanation. The boarding area is crowded and confusing. The plane's bins were too small for roller boards so passengers had to carry bags outdoors in snow and terrible wind, to get them loaded. The Newark airport where the plane landed was miserable! Departure from Newark was worse than landing if that could be possible! Awful!
Read more about United Airlines

Book Cheap flights with United Airlines to St. Louis

Recent round-trip flight deals

5/26Sun
nonstopUnited Airlines
2h 12mIAD-STL
5/29Wed
1 stopUnited Airlines
6h 16mSTL-IAD
$178
5/26Sun
1 stopUnited Airlines
6h 44mIAD-STL
5/29Wed
1 stopUnited Airlines
6h 16mSTL-IAD
$188
5/28Tue
1 stopUnited Airlines
6h 44mDCA-STL
5/30Thu
1 stopUnited Airlines
6h 13mSTL-DCA
$188
5/28Tue
1 stopUnited Airlines
6h 50mIAD-STL
5/30Thu
nonstopUnited Airlines
2h 10mSTL-IAD
$210
5/26Sun
nonstopUnited Airlines
2h 12mIAD-STL
5/29Wed
nonstopUnited Airlines
2h 10mSTL-IAD
$220
6/11Tue
nonstopUnited Airlines
2h 39mEWR-STL
6/15Sat
nonstopUnited Airlines
2h 22mSTL-EWR
$229
6/5Wed
nonstopUnited Airlines
2h 12mIAD-STL
6/12Wed
nonstopUnited Airlines
2h 10mSTL-IAD
$236
6/12Wed
1 stopUnited Airlines
4h 41mDCA-STL
6/15Sat
1 stopUnited Airlines
4h 12mSTL-DCA
$240
6/11Tue
nonstopUnited Airlines
2h 39mEWR-STL
6/16Sun
nonstopUnited Airlines
2h 22mSTL-EWR
$244
5/26Sun
nonstopUnited Airlines
2h 12mIAD-STL
5/29Wed
1 stopUnited Airlines
6h 16mSTL-IAD
$248
5/25Sat
1 stopUnited Airlines
5h 43mIAD-STL
5/28Tue
1 stopUnited Airlines
6h 16mSTL-IAD
$249
6/11Tue
nonstopUnited Airlines
2h 39mEWR-STL
6/13Thu
nonstopUnited Airlines
2h 22mSTL-EWR
$254
7/29Mon
nonstopUnited Airlines
2h 38mEWR-STL
8/1Thu
nonstopUnited Airlines
2h 22mSTL-EWR
$259
5/29Wed
1 stopUnited Airlines
8h 03mSEA-STL
5/30Thu
1 stopUnited Airlines
8h 27mSTL-SEA
$261
6/5Wed
nonstopUnited Airlines
2h 39mEWR-STL
6/24Mon
nonstopUnited Airlines
2h 22mSTL-EWR
$264
5/25Sat
1 stopUnited Airlines
5h 43mIAD-STL
5/28Tue
1 stopUnited Airlines
6h 16mSTL-IAD
$265
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nonstopUnited Airlines
2h 38mEWR-STL
7/27Sat
1 stopUnited Airlines
4h 55mSTL-EWR
$266
5/25Sat
nonstopUnited Airlines
2h 12mIAD-STL
5/28Tue
1 stopUnited Airlines
6h 16mSTL-IAD
$271
6/27Thu
nonstopUnited Airlines
2h 38mEWR-STL
7/2Tue
nonstopUnited Airlines
2h 22mSTL-EWR
$275
5/29Wed
nonstopUnited Airlines
2h 39mEWR-STL
5/31Fri
nonstopUnited Airlines
2h 22mSTL-EWR
$284

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Recent one-way flight deals

6/4Tue
1 stopUnited Airlines
6h 11mDCA-STL
$94
10/3Thu
1 stopUnited Airlines
4h 52mPHL-STL
$99
5/22Wed
1 stopUnited Airlines
7h 08mSEA-STL
$113
8/24Sat
nonstopUnited Airlines
2h 35mEWR-STL
$115
7/1Mon
nonstopUnited Airlines
2h 38mEWR-STL
$130
5/13Mon
1 stopUnited Airlines
7h 08mSEA-STL
$138
7/6Sat
1 stopUnited Airlines
7h 06mLGA-STL
$139
8/25Sun
1 stopUnited Airlines
5h 22mEWR-STL
$139
6/4Tue
1 stopUnited Airlines
6h 50mIAD-STL
$144
6/11Tue
nonstopUnited Airlines
2h 39mEWR-STL
$147
6/8Sat
nonstopUnited Airlines
2h 39mEWR-STL
$150
6/13Thu
nonstopUnited Airlines
2h 38mEWR-STL
$161
8/10Sat
nonstopUnited Airlines
2h 38mEWR-STL
$165
6/5Wed
nonstopUnited Airlines
2h 39mEWR-STL
$170
5/31Fri
nonstopUnited Airlines
2h 38mEWR-STL
$171
5/14Tue
nonstopUnited Airlines
2h 55mEWR-STL
$176
5/22Wed
nonstopUnited Airlines
2h 27mIAD-STL
$181
5/30Thu
nonstopUnited Airlines
2h 39mEWR-STL
$185
6/6Thu
nonstopUnited Airlines
2h 38mEWR-STL
$187
5/27Mon
1 stopUnited Airlines
6h 20mDFW-STL
$189

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Flights to St. Louis - United Airlines

Destination:

Lambert-St Louis (STL)United States

Return flight deals:

Lambert-St Louis - United States

Cabin classes:

$490
First Class flights to St. Louis
$392
Business Class flights to St. Louis
$407
$50

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