$967 Find Cheap Flights from St. Louis to Guam

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 Guam departing on 5/20. 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
1 adult, Economy, 0 bags

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Flight Deals

Book Cheap St. Louis to Guam Plane Tickets

 
Here are some of the best deals found on KAYAK recently from the most popular airlines for round-trip flights from St. Louis to Guam 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 flight deals from St. Louis to Guam

Thu, Feb 12 - Sun, Feb 22
United Airlines Logo
6:00 am - 7:05 pm
STL
-
GUM
21h 05m2 stops
United Airlines Logo
7:20 pm - 10:00 pm
GUM
-
STL
42h 40m2 stops
$1,942United Airlines
Sun, Mar 22 - Sat, Mar 28
Delta Logo
6:10 am - 2:35 pm
STL
-
GUM
41h 25m2 stops
Delta Logo
4:50 pm - 11:15 pm
GUM
-
STL
45h 25m2 stops
$2,053Delta
Sun, Mar 22 - Sat, Mar 28
United Airlines Logo
6:30 am - 6:50 pm
STL
-
GUM
21h 20m2 stops
United Airlines Logo
7:25 am - 8:57 pm
GUM
-
STL
28h 32m2 stops
$2,328United Airlines
Thu, Feb 12 - Sun, Feb 22
United Airlines Logo
6:00 am - 7:05 pm
STL
-
GUM
21h 05m2 stops
United Airlines Logo
12:30 pm - 10:14 pm
GUM
-
STL
25h 44m3 stops
$2,664United Airlines
Sun, Jan 4 - Thu, Jan 8
Delta Logo
7:02 pm - 11:05 pm
STL
-
GUM
36h 03m2 stops
Delta Logo
1:00 am - 8:43 pm
GUM
-
STL
35h 43m2 stops
$2,803Delta
Sun, Jan 4 - Fri, Jan 9
United Airlines Logo
5:02 pm - 4:20 am
STL
-
GUM
43h 18m2 stops
United Airlines Logo
7:40 am - 4:55 pm
GUM
-
STL
25h 15m2 stops
$3,010United Airlines
Booking Insights

KAYAK's insights & trends for St. Louis to Guam flights

Get data-powered insights and trends into flights from St. Louis to Guam to help you find the cheapest flights, the best time to fly and much more.

What’s the cheapest day of the week to fly from St. Louis to Guam?

The average price of all round-trip flights from St. Louis to Guam clicked on KAYAK for each day over the last 12 months.

If you are looking for a flight deal from St. Louis to Guam, look for departures on Wednesdays and avoid leaving on a Sunday, as it's usually the priciest day. When flying back from Guam, Monday is the cheapest day to fly and Thursday is the most expensive.

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Good to know

Cheapest flight$967
Flight from St. Louis to Tamuning

FAQs - booking Guam flights

  • How does KAYAK find such low prices on flights from St. Louis to Guam?

    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 Guam.

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

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight from St. Louis to Guam 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 Guam?

    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 St. Louis to Guam 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 St. Louis to Guam?

    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 St. Louis to Guam up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

  • What is the cheapest time of day to fly to Guam?

    The cheapest time of day to fly to Guam is generally in the morning, when round-trip flights cost $2,146 on average. The most expensive time of day to fly to Guam is generally in the morning, which is peak travel time and where the average cost of a ticket is $2,146.

Reviews of the top airline flying from St. Louis to Guam

 
Need help choosing which airline to fly with from St. Louis to Guam? 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.
7.4
United AirlinesOverall score based on 9095 reviews
7.1Entertainment
7.3Comfort
7.7Boarding
8.1Crew
6.6Food
Airline reviews

It was nice to have gotten up upgraded to first class with a meal on a three hour flight

10.0 ExcellentMichele, Dec 2025
RSW - ORD
Read more United Airlines reviews

It was nice to have gotten up upgraded to first class with a meal on a three hour flight

Not great experience - we were super late boarding due to issues with aircraft. Then when we finally all got onboard and seated and they started taxiing out to the runway they just stopped then turned around and went back to the airport. Apparently the crew “ran out of time” to legally fly us. They mentioned that they were about 2 minutes away from taking off. I understand the rules and safety but kinda wonder why they would have bothered boarding us in the first place? Had to go all the way back and de plane and then wait in a HUGE line to get a hotel (this is somewhere around 2:30am) finally got to hotel by Uber (no shuttle after 20min so gave up) and they ended up putting us all back on the same aircraft at 10am next morning so got about 2.5 hours sleep. They did give us. $250 credit, but it was a São Paulo Brazil flight out of Dulles. The flight and everything was fine.

United overall experience is great these days. Airport experience was very organized. Staff on flight were great. App and information as good as it gets.

United have really come back. Airport and boarding process is clear and good, app and information also very good

They charged a fee for 1st bag checked. Others in same party were free.

Flight was delayed 8 times. We were sitting at the airport for 14 hours. We got 2 hours of sleep (if that) on what was not meant to be a red-eye.

The movies offered were great. Staff were very pleasant and very efficient.

After a delay at the gate, C3, at Ohare on Sunday, I left my Blk ski coat on the bench at the gate, lost! Please review my lob claim, thx.

Very bad! They kept delaying my flight and wouldn’t do anything about it

They brought an empty plane to the gate. Then a flight delay was announced for maintenance and waiting on a part. I was then put on a flight to San Francisco instead with a connecting flight to my final destination. Arrived at my final destination 2 hours late.

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

Information on your arrival and departure airports

St. Louis (STL)