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Cheap flights from St. Louis to Guam from $7,170

This is the cheapest round-trip flight price found by a momondo user in the last 72 hours by searching for a flight from St. Louis to Guam departing on 3/24. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
1 adult
0 bags

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Cheap round-trip flights

Enter your travel dates to find the best prices.
United Airlines Logo
8:30 am - 4:20 am
STL
-
GUM
28h 50m
2 stops
United Airlines Logo
12:10 pm - 10:28 pm
GUM
-
STL
25h 18m
2 stops
$7,170United Airlines
Tue, Mar 24 - Wed, Apr 1
United Airlines Logo
8:30 am - 4:20 am
STL
-
GUM
28h 50m
2 stops
United Airlines Logo
12:10 pm - 4:56 pm
GUM
-
STL
19h 46m
2 stops
$10,170United Airlines
Tue, Mar 24 - Wed, Apr 1

United Airlines flights from St. Louis to Guam

Our best United Airlines deals on St. Louis to Guam flight tickets
United Airlines
Feb 9
STL6:00 amLambert-St Louis
21h 05m
2 stops
GUM7:05 pmTamuning Guam Intl
Feb 16
GUM7:40 amTamuning Guam Intl
25h 04m
2 stops
STL4:44 pmLambert-St Louis
$7,127
United Airlines
Mar 24
STL8:30 amLambert-St Louis
28h 50m
2 stops
GUM4:20 amTamuning Guam Intl
Apr 1
GUM12:10 pmTamuning Guam Intl
25h 18m
2 stops
STL10:28 pmLambert-St Louis
$7,170
United Airlines
Feb 6
STL6:00 amLambert-St Louis
21h 05m
2 stops
GUM7:05 pmTamuning Guam Intl
Feb 13
GUM7:40 amTamuning Guam Intl
21h 34m
2 stops
STL1:14 pmLambert-St Louis
$7,727

Delta flights from St. Louis to Guam

Our best Delta deals on St. Louis to Guam flight tickets
Delta
Feb 5
STL6:40 amLambert-St Louis
24h 25m
2 stops
GUM11:05 pmTamuning Guam Intl
Feb 11
GUM1:00 amTamuning Guam Intl
38h 36m
2 stops
STL11:36 pmLambert-St Louis
$9,324
Delta
Feb 7
STL5:04 pmLambert-St Louis
38h 01m
2 stops
GUM11:05 pmTamuning Guam Intl
Feb 13
GUM1:00 amTamuning Guam Intl
38h 23m
2 stops
STL11:23 pmLambert-St Louis
$10,824

momondo Fare Finder

 
Customize your flight search to find flights from St. Louis to Guam that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, momondo users made 832,500 searches. Data last updated February 1, 2026.
Use the filters below to find and compare flights from St. Louis to Guam that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

St. LouisTamuning

STL - GUM

STLGUM

Lambert-St Louis

Tue 3/24

8:30 am-4:20 am

2 stops28h 50m

Tamuning Guam Intl

Wed 4/1

12:10 pm-10:28 pm

2 stops25h 18m

$7,170

St. LouisTamuning

STL - GUM

STLGUM

Lambert-St Louis

Tue 3/24

8:30 am-4:20 am

2 stops28h 50m

Tamuning Guam Intl

Wed 4/1

12:10 pm-4:56 pm

2 stops19h 46m

$10,170

Flights are sorted by cheapest round-trip flights first.

Sorted by cheapest first

Cheap St. Louis to Guam flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from St. Louis to Guam

Fastest flight time

21h 05m

Direct flights

None
The fastest flight from St. Louis to Guam takes 21h 05m
There are no direct flights from St. Louis to Guam. There are no popular flight routes from St. Louis to Guam.
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  • When did momondo last update prices for flights from Lambert-St Louis Airport to Guam?

    Prices for flights from Lambert-St Louis Airport to Guam refresh daily.

  • How old do you have to be to fly from Lambert-St Louis Airport to Guam?

    Although the minimum age for a child to fly alone is five, airlines that offer an unaccompanied minor (UMNR) service may have their own age limits, which could be impacted by factors such as flight length, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from Lambert-St Louis Airport to Guam.

  • What documentation or ID do you need to fly to Guam?

    The necessary travel and health documents for your Guam trip may vary depending on your travel plans and individual circumstances. Generally, you should have various documents, such as a national ID card or driver's license and a passport that is valid for six months beyond your scheduled arrival date. We recommend seeking advice from your airline or a trusted third party, such as IATA.

  • How do I get Price Alerts for flights from St. Louis to Guam?

    Search flight deals from St. Louis to Guam. While viewing offers you’ll have the option to create a Price Alert.

  • How can I save money on flights from St. Louis to Guam with momondo?

    By using tools like our “Price Calendar”, you can see the best day to fly round-trip for your travels. Our “Price Forecast” tool uses AI to predict whether you should purchase or hold off on booking for potentially cheaper prices. Explore shows you all flight options from a city or airport to build your own unique adventure. The Discover blog also provides valuable insights for saving money while booking your experience. After searching you can toggle on “Price Alerts” to track prices for your desired flight and book at the ideal moment.

  • How does momondo find its flight prices?

    We compare prices from 700+ competitors to help you find the price that works best for you. momondo operates in over 30 international markets, bringing you access to a wide range of fares and deals. Search for your travel using momondo for a diverse range of options from airlines and OTAs.

Why use momondo?

Why should I use momondo to find a flight deal from St. Louis to Guam?

To find the flight that best suits your needs, momondo gathers a range of flights from a large pool of different airlines and agents; you can then use our insights and filters to find and book the right flight to Guam from St. Louis.

Can I find flights from St. Louis to Guam with flexible booking policies on momondo?

Yes. momondo enables you to select and highlight flights to Guam from St. Louis with this policy.

How can momondo help me find flights from St. Louis to Guam?

momondo provides multiple filters to help you find the best flight to Guam from St. Louis. Filter by price, airline, airports, cabin, aircraft, payment method, number of stops and more.

I’m not ready to book a flight from St. Louis to Guam right now. Can momondo alert me if prices change?

Yes. momondo can track prices for St. Louis to Guam flights and alert you when they change. Perform a search to set up the price alert. All that is required is a valid email address.

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