Latest deals
FAQs
Price Alerts

Cheap flights from St. Louis to Guam from $1,160

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 8/25. 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
1 adult, Economy, 0 bags

Find the cheapest flights from St. Louis to Guam

Cheap round-trip flights

Enter your travel dates to find the best prices.
United Airlines Logo
11:15 am - 4:20 amSTL  Lambert-St Louis-GUM Tamuning Guam Intl
50h 05m2 stops Houston George Bush Intcntl Tokyo Haneda
United Airlines Logo
7:05 am - 8:46 pmGUM  Tamuning Guam Intl-STL Lambert-St Louis
28h 41m2 stops Honolulu Denver Intl
$1,160United Airlines
Tue, Aug 25 - Fri, Aug 28
Multiple Airlines Logo
7:02 am - 3:35 pmSTL  Lambert-St Louis-GUM Tamuning Guam Intl
41h 33m2 stops Seattle/Tacoma Intl Incheon Intl
Multiple Airlines Logo
4:50 pm - 11:59 pmGUM  Tamuning Guam Intl-STL Lambert-St Louis
46h 09m2 stops Incheon Intl Seattle/Tacoma Intl
$1,315Multiple Airlines
Thu, Oct 22 - Thu, Oct 29
United Airlines Logo
6:00 am - 7:00 pmSTL  Lambert-St Louis-GUM Tamuning Guam Intl
21h 00m2 stops Chicago O'Hare Intl Honolulu
United Airlines Logo
7:45 am - 10:15 pmGUM  Tamuning Guam Intl-STL Lambert-St Louis
30h 30m2 stops Honolulu San Francisco
$1,919United Airlines
Mon, Nov 9 - Mon, Nov 16
United Airlines Logo
5:00 am - 7:00 pmSTL  Lambert-St Louis-GUM Tamuning Guam Intl
22h 00m2 stops Chicago O'Hare Intl Honolulu
United Airlines Logo
7:45 am - 6:05 pmGUM  Tamuning Guam Intl-STL Lambert-St Louis
26h 20m3 stops Honolulu Los Angeles San Francisco
$1,919United Airlines
Mon, Nov 9 - Mon, Nov 16
Multiple Airlines Logo
6:35 am - 2:35 pmSTL  Lambert-St Louis-GUM Tamuning Guam Intl
41h 00m2 stops Seattle/Tacoma Intl Tokyo Narita
Multiple Airlines Logo
2:00 am - 11:59 pmGUM  Tamuning Guam Intl-STL Lambert-St Louis
36h 59m2 stops Incheon Intl Seattle/Tacoma Intl
$2,476Multiple Airlines
Tue, Aug 25 - Thu, Aug 27

Save money when you book flights with momondo

Big names and deals

Big names and deals

Search 100s of travel sites to compare prices.

Filter for what you want

Filter for what you want

Free Wi-Fi? Stopover? Instantly customize your results.

Trusted and free

Trusted and free

We’re completely free to use - no hidden charges or fees.

Price Alerts

Price Alerts

Not ready to book? to track prices.
Search flight deals

United Airlines flights from St. Louis to Guam

Our best United Airlines deals on St. Louis to Guam flight tickets
United Airlines
Aug 25
STL11:15 amLambert-St Louis
50h 05m
2 stops
GUM4:20 amTamuning Guam Intl
Aug 28
GUM7:05 amTamuning Guam Intl
28h 41m
2 stops
STL8:46 pmLambert-St Louis
$1,160
United Airlines
Aug 18
STL6:15 amLambert-St Louis
31h 05m
2 stops
GUM4:20 amTamuning Guam Intl
Aug 20
GUM7:05 amTamuning Guam Intl
47h 33m
3 stops
STL3:38 pmLambert-St Louis
$1,183
United Airlines
Nov 9
STL5:00 amLambert-St Louis
22h 00m
2 stops
GUM7:00 pmTamuning Guam Intl
Nov 16
GUM7:45 amTamuning Guam Intl
26h 20m
3 stops
STL6:05 pmLambert-St Louis
$1,919

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 August 14, 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

Cheapest round-trip

St. LouisTamuning

STL Lambert-St Louis - GUM Tamuning Guam Intl

STLGUM

Lambert-St Louis

Tue 8/25

11:15 am-4:20 am

2 stops50h 05m

Tamuning Guam Intl

Fri 8/28

7:05 am-8:46 pm

2 stops28h 41m

$1,160

St. LouisTamuning

STL Lambert-St Louis - GUM Tamuning Guam Intl

STLGUM

Lambert-St Louis

Thu 10/22

7:02 am-3:35 pm

2 stops41h 33m

Tamuning Guam Intl

Thu 10/29

4:50 pm-11:59 pm

2 stops46h 09m

$1,315

St. LouisTamuning

STL Lambert-St Louis - GUM Tamuning Guam Intl

STLGUM

Lambert-St Louis

Mon 11/9

6:00 am-7:00 pm

2 stops21h 00m

Tamuning Guam Intl

Mon 11/16

7:45 am-10:15 pm

2 stops30h 30m

$1,919
Quickest round-trip

St. LouisTamuning

STL Lambert-St Louis - GUM Tamuning Guam Intl

STLGUM

Lambert-St Louis

Mon 11/9

5:00 am-7:00 pm

2 stops22h 00m

Tamuning Guam Intl

Mon 11/16

7:45 am-6:05 pm

3 stops26h 20m

$1,919

St. LouisTamuning

STL Lambert-St Louis - GUM Tamuning Guam Intl

STLGUM

Lambert-St Louis

Tue 8/25

6:35 am-2:35 pm

2 stops41h 00m

Tamuning Guam Intl

Thu 8/27

2:00 am-11:59 pm

2 stops36h 59m

$2,476

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 00m

Direct flights

None
The fastest flight from St. Louis to Guam takes 21h 00m
There are no direct flights from St. Louis to Guam. There are no popular flight routes from St. Louis to Guam.
Search flight deals

Frequently asked questions about flying from St. Louis to Guam

  • 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.

Frequently asked questions about flying from St. Louis to Guam

  • 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.

An easier way to manage your Guam trip

We make it super easy to schedule, organize and travel with friends or family. Trips is free — and available to use no matter where you book.
Start using Trips
Find my bookings

Get notified when prices go down

Daily price changes in your inbox - only with Price Alerts.
1 adult
Sun 9/13
Sun 9/20
By creating a price alert you accept our terms of use and privacy policy.

Find better results for your trip to Guam

Popular cities in Guam

Popular flights according to clicks in the last 7 days on momondo
Flights to Tamuningfrom $902