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Cheap flights from St. Louis to Guam from $1,456

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 8/28. 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

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Cheap round-trip flights

Enter your travel dates to find the best prices.
United Airlines Logo
8:35 am - 3:45 pm
STL
-
GUM
64h 10m
2 stops
United Airlines Logo
7:05 am - 12:40 pm
GUM
-
STL
20h 35m
2 stops
$1,456United Airlines
Fri, Aug 28 - Tue, Sep 1
United Airlines Logo
3:02 pm - 3:45 pm
STL
-
GUM
57h 43m
2 stops
United Airlines Logo
7:05 am - 2:08 pm
GUM
-
STL
22h 03m
2 stops
$1,556United Airlines
Fri, Aug 28 - Tue, Sep 1
Delta Logo
6:20 am - 11:55 pm
STL
-
GUM
26h 35m
2 stops
Delta Logo
5:20 pm - 11:21 pm
GUM
-
STL
45h 01m
2 stops
$2,053Delta
Mon, May 4 - Mon, May 11
Delta Logo
6:21 am - 3:35 pm
STL
-
GUM
42h 14m
2 stops
Delta Logo
3:00 am - 11:21 pm
GUM
-
STL
35h 21m
2 stops
$2,218Delta
Fri, May 8 - Thu, May 14
United Airlines Logo
6:00 am - 6:05 pm
STL
-
GUM
21h 05m
2 stops
United Airlines Logo
7:05 am - 8:43 pm
GUM
-
STL
28h 38m
2 stops
$2,229United Airlines
Tue, May 5 - Tue, May 12
United Airlines Logo
8:46 am - 9:45 pm
STL
-
GUM
21h 59m
2 stops
United Airlines Logo
7:05 am - 2:32 pm
GUM
-
STL
22h 27m
3 stops
$3,060United Airlines
Fri, May 8 - Fri, May 15

United Airlines flights from St. Louis to Guam

Our best United Airlines deals on St. Louis to Guam flight tickets
United Airlines
Aug 28
STL8:35 amLambert-St Louis
64h 10m
2 stops
GUM3:45 pmTamuning Guam Intl
Sep 1
GUM7:05 amTamuning Guam Intl
20h 35m
2 stops
STL12:40 pmLambert-St Louis
$1,456
United Airlines
Aug 28
STL3:02 pmLambert-St Louis
57h 43m
2 stops
GUM3:45 pmTamuning Guam Intl
Sep 1
GUM7:05 amTamuning Guam Intl
22h 03m
2 stops
STL2:08 pmLambert-St Louis
$1,556
United Airlines
May 5
STL6:00 amLambert-St Louis
21h 05m
2 stops
GUM6:05 pmTamuning Guam Intl
May 12
GUM7:05 amTamuning Guam Intl
28h 38m
2 stops
STL8:43 pmLambert-St Louis
$2,229

Delta flights from St. Louis to Guam

Our best Delta deals on St. Louis to Guam flight tickets
Delta
May 4
STL6:20 amLambert-St Louis
26h 35m
2 stops
GUM11:55 pmTamuning Guam Intl
May 11
GUM5:20 pmTamuning Guam Intl
45h 01m
2 stops
STL11:21 pmLambert-St Louis
$2,053
Delta
May 8
STL6:21 amLambert-St Louis
42h 14m
2 stops
GUM3:35 pmTamuning Guam Intl
May 14
GUM3:00 amTamuning Guam Intl
35h 21m
2 stops
STL11:21 pmLambert-St Louis
$2,218
Delta
Mar 26
STL6:00 amLambert-St Louis
26h 05m
2 stops
GUM11:05 pmTamuning Guam Intl
Apr 1
GUM3:00 amTamuning Guam Intl
36h 21m
2 stops
STL12:21 amLambert-St Louis
$2,827

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 March 24, 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 - GUM

STLGUM

Lambert-St Louis

Fri 8/28

8:35 am-3:45 pm

2 stops64h 10m

Tamuning Guam Intl

Tue 9/1

7:05 am-12:40 pm

2 stops20h 35m

$1,456

St. LouisTamuning

STL - GUM

STLGUM

Lambert-St Louis

Fri 8/28

3:02 pm-3:45 pm

2 stops57h 43m

Tamuning Guam Intl

Tue 9/1

7:05 am-2:08 pm

2 stops22h 03m

$1,556

St. LouisTamuning

STL - GUM

STLGUM

Lambert-St Louis

Mon 5/4

6:20 am-11:55 pm

2 stops26h 35m

Tamuning Guam Intl

Mon 5/11

5:20 pm-11:21 pm

2 stops45h 01m

$2,053

St. LouisTamuning

STL - GUM

STLGUM

Lambert-St Louis

Fri 5/8

6:21 am-3:35 pm

2 stops42h 14m

Tamuning Guam Intl

Thu 5/14

3:00 am-11:21 pm

2 stops35h 21m

$2,218

St. LouisTamuning

STL - GUM

STLGUM

Lambert-St Louis

Tue 5/5

6:00 am-6:05 pm

2 stops21h 05m

Tamuning Guam Intl

Tue 5/12

7:05 am-8:43 pm

2 stops28h 38m

$2,229
Quickest round-trip

St. LouisTamuning

STL - GUM

STLGUM

Lambert-St Louis

Fri 5/8

8:46 am-9:45 pm

2 stops21h 59m

Tamuning Guam Intl

Fri 5/15

7:05 am-2:32 pm

3 stops22h 27m

$3,060

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

57h 43m

Direct flights

None
The fastest flight from St. Louis to Guam takes 57h 43m
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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