STL

Find cheap Alaska Airlines flights to St. Louis from $167

1 adult
1 adult, Economy, 0 bags

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Flight Deals

Cheap Alaska Airlines Flight Deals to St. Louis

 
Here are some of the best deals found on KAYAK recently from Alaska Airlines to St. Louis that are departing in the next months. While these flights were available on KAYAK in the last 72 hours, prices and availability are subject to change and deals may expire.
Discover the best prices for you by selecting your travel dates on KAYAK.

Recent round-trip Alaska Airlines flight deals to St. Louis

Fri, Jan 23 - Mon, Jan 26
Alaska Airlines Logo
7:00 am - 10:46 pm
DEN
-
STL
14h 46m1 stop
Alaska Airlines Logo
2:50 pm - 11:35 pm
STL
-
DEN
9h 45m1 stop
$322Alaska Airlines
Thu, Feb 5 - Sun, Feb 8
Alaska Airlines Logo
7:00 am - 1:54 pm
DEN
-
STL
29h 54m1 stop
Alaska Airlines Logo
2:50 pm - 10:53 am
STL
-
DEN
21h 03m2 stops
$328Alaska Airlines
Thu, Feb 5 - Sun, Feb 8
Alaska Airlines Logo
11:49 am - 10:46 pm
DEN
-
STL
33h 57m2 stops
Alaska Airlines Logo
2:50 pm - 10:53 am
STL
-
DEN
21h 03m2 stops
$333Alaska Airlines
Fri, Feb 6 - Mon, Feb 9
Alaska Airlines Logo
7:00 am - 10:46 pm
DEN
-
STL
14h 46m1 stop
Alaska Airlines Logo
2:50 pm - 10:53 am
STL
-
DEN
21h 03m2 stops
$348Alaska Airlines
Fri, Mar 6 - Mon, Mar 9
Alaska Airlines Logo
11:38 am - 1:51 pm
DEN
-
STL
25h 13m2 stops
Alaska Airlines Logo
2:47 pm - 10:42 am
STL
-
DEN
20h 55m2 stops
$353Alaska Airlines
Fri, Mar 6 - Sun, Mar 8
Alaska Airlines Logo
7:52 pm - 1:51 pm
DEN
-
STL
16h 59m1 stop
Alaska Airlines Logo
7:00 am - 10:42 am
STL
-
DEN
28h 42m2 stops
$358Alaska Airlines
Thu, Jan 15 - Fri, Feb 27
Alaska Airlines Logo
11:49 am - 10:46 pm
DEN
-
STL
33h 57m2 stops
Alaska Airlines Logo
2:47 pm - 10:42 am
STL
-
DEN
20h 55m2 stops
$363Alaska Airlines
Fri, Feb 13 - Wed, Feb 18
Alaska Airlines Logo
7:00 am - 1:51 pm
DEN
-
STL
29h 51m1 stop
Alaska Airlines Logo
7:00 am - 10:42 am
STL
-
DEN
28h 42m2 stops
$387Alaska Airlines
Mon, Jan 5 - Tue, Jan 6
Alaska Airlines Logo
11:31 am - 11:59 pm
DEN
-
STL
11h 28m2 stops
Alaska Airlines Logo
7:00 am - 9:28 pm
STL
-
DEN
15h 28m2 stops
$393Alaska Airlines
Fri, Feb 20 - Thu, Feb 26
Alaska Airlines Logo
11:38 am - 1:51 pm
DEN
-
STL
25h 13m2 stops
Alaska Airlines Logo
2:47 pm - 11:59 pm
STL
-
DEN
10h 12m1 stop
$398Alaska Airlines
Useful Info

Good to know

Low seasonJanuary
Cheapest flight$167
Average price round-trip$523
Best time to beat the crowds with an average 18% drop in price.
Most popular time to fly with an average 28% increase in price.
Flight from Denver to St. Louis
(price for this month)

When to book flights with Alaska Airlines to St. Louis

Average price per month
Flight prices as travel date approaches

FAQs for flying to St. Louis with Alaska Airlines

  • Which other airlines fly to St. Louis?

    Along with Alaska Airlines, you can also fly to St. Louis with Southwest, Frontier, Delta, United Airlines, Spirit Airlines and Delta.

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

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

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

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

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

  • If you’re intending to fly with Alaska Airlines, book your flight to St. Louis at least 2 weeks before departure to ensure a below-average price.
  • High season for flights to St. Louis with Alaska Airlines is December and prices are highest at this time. The cheapest month to fly is January.

Alaska Airlines customer reviews

8.0
Very good10,000 verified ratings
7.0Entertainment
7.1Food
8.1Boarding
8.5Crew
7.8Comfort
Pros +
  • Crew was good. (in 1348 reviews)
Cons -
  • Full flight amidst this pandemic? (in 1480 reviews)
Show reviews that mention
Traveler rating:
Sort by:
A
10.0 Wonderful
I was standing in line to use the restroom. A First Class passenger wanted to use the restroom after me, but Jaques made me wait on Flight 3418 from BOI to SJC on December 12, 2025. I felt this was inappropriate and rude.
A
4.0 Mediocre
The flight was fine. The connecting flight was a nightmare. Gate change without text or email notification was super frustrating and I ended up missing my connecting flight. Return flight was delayed and had I not quadruple checked flight time, gate and refreshed the Alaska Airlines app every 5 minutes, I would have taken a flight that would not arrive in time for my connecting flight. Ended up flying Delta home.
D
10.0 Wonderful
Short trip from Honolulu to Kauai. Not a major issue. Only concern was the drop off of the luggage for departure. Only one person handling all of the passengers. She was busting her butt.
D
10.0 Wonderful
There was no food or entertainment so quit asking about that! Everything else was fine.
D
8.0 Very good
There was no food or entertainment. I was in the middle seat which was uncomfortable. The flight and crew were fine.
A
10.0 Wonderful
Still not loving the inflight entertainment
A
8.0 Very good
Excellent service, my kids thoroughly enjoyed the picnic pack
A
8.0 Very good
Service was excellent and the fact that I didn’t have to request to sit next to my kids when there were no seats next to each other was amazing. Love how Alaska anticipated the seat arrangements. One feature that would take the flight from good to amazing would be to have a screen available with headphones with games and movies, but the kids loved the little boxes and were entertaining with the game—it also helped them get away from too much screen time.
A
4.0 Mediocre
I wasn’t assigned a seat until last minute even though I checked in 24 hours before the flight and was told I might not be able to get on the flight! The leg room and seat room in the flight was abysmal. The service both at boarding and on the flight was very mediocre and not particularly friendly.
A
4.0 Mediocre
The staff was friendly and the flight ran on time. Boarding was a zoo. This process could be greatly improved. They have done away with the entertainment they used to offer in favor a wifi signal for our phones and that wasn't working in half the flights. The beverage selection is poor and the quantity was minimal. I'm sure when the airlines can come up with something cheaper to serve than pretzels they they will switch to it. If their budget is that tight what else are they skimping on? (Maintenance, fuel, safety) Over all I'm underwhelmed!
Read more about Alaska Airlines

Everything you need to know for your flight to St. Louis

Other airlines flying to St. Louis

Flight deals from the most popular airlines with KAYAK users flying the route
Frontier flights to St. Louis
Delta flights to St. Louis
Southwest flights to St. Louis
American Airlines flights to St. Louis
United Airlines flights to St. Louis