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Cheap flights from St. Louis to Guam from $1,067

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from St. Louis to Guam departing on 9/20. 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
6:30 pm - 3:45 pm
STL
-
GUM
54h 15m
2 stops
United Airlines Logo
7:05 am - 8:40 pm
GUM
-
STL
28h 35m
2 stops
$1,712United Airlines
Mon, Aug 3 - Fri, Aug 7
United Airlines Logo
6:01 am - 3:45 pm
STL
-
GUM
66h 44m
3 stops
United Airlines Logo
7:05 am - 8:40 pm
GUM
-
STL
28h 35m
2 stops
$2,019United Airlines
Mon, Aug 3 - Fri, Aug 7
Delta Logo
8:00 am - 3:35 pm
STL
-
GUM
40h 35m
2 stops
Delta Logo
2:00 am - 11:42 pm
GUM
-
STL
36h 42m
2 stops
$2,203Delta
Fri, Aug 14 - Wed, Sep 9
United Airlines Logo
6:00 am - 6:05 pm
STL
-
GUM
21h 05m
2 stops
United Airlines Logo
7:10 am - 2:10 pm
GUM
-
STL
22h 00m
2 stops
$2,229United Airlines
Thu, Oct 1 - Mon, Oct 5
United Airlines Logo
6:40 am - 7:00 pm
STL
-
GUM
21h 20m
2 stops
United Airlines Logo
7:45 am - 4:35 pm
GUM
-
STL
24h 50m
2 stops
$2,279United Airlines
Fri, Oct 30 - Tue, Nov 3
Delta Logo
6:00 am - 11:55 pm
STL
-
GUM
26h 55m
2 stops
Delta Logo
2:00 am - 12:41 am
GUM
-
STL
37h 41m
2 stops
$2,453Delta
Tue, Jul 7 - Mon, Jul 13
Delta Logo
8:48 am - 3:35 pm
STL
-
GUM
39h 47m
2 stops
Delta Logo
2:00 am - 10:15 pm
GUM
-
STL
35h 15m
2 stops
$2,628Delta
Fri, Jul 17 - Thu, Jul 23
United Airlines Logo
6:15 am - 6:05 pm
STL
-
GUM
20h 50m
2 stops
United Airlines Logo
7:10 am - 2:15 pm
GUM
-
STL
22h 05m
3 stops
$2,771United Airlines
Fri, Aug 14 - Thu, Sep 10
United Airlines Logo
5:10 am - 6:05 pm
STL
-
GUM
21h 55m
3 stops
United Airlines Logo
7:05 am - 4:33 pm
GUM
-
STL
24h 28m
2 stops
$3,278United Airlines
Fri, Jul 17 - Fri, Jul 24
United Airlines Logo
5:10 am - 6:05 pm
STL
-
GUM
21h 55m
3 stops
United Airlines Logo
12:15 pm - 7:23 pm
GUM
-
STL
22h 08m
3 stops
$7,329United Airlines
Fri, Jul 17 - Fri, Jul 24

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Delta flights from St. Louis to Guam

Our best Delta deals on St. Louis to Guam flight tickets
Delta
Aug 14
STL8:00 amLambert-St Louis
40h 35m
2 stops
GUM3:35 pmTamuning Guam Intl
Sep 9
GUM2:00 amTamuning Guam Intl
36h 42m
2 stops
STL11:42 pmLambert-St Louis
$2,203
Delta
Jul 7
STL6:00 amLambert-St Louis
26h 55m
2 stops
GUM11:55 pmTamuning Guam Intl
Jul 13
GUM2:00 amTamuning Guam Intl
37h 41m
2 stops
STL12:41 amLambert-St Louis
$2,453
Delta
Jul 17
STL8:48 amLambert-St Louis
39h 47m
2 stops
GUM3:35 pmTamuning Guam Intl
Jul 23
GUM2:00 amTamuning Guam Intl
35h 15m
2 stops
STL10:15 pmLambert-St Louis
$2,628

United Airlines flights from St. Louis to Guam

Our best United Airlines deals on St. Louis to Guam flight tickets
United Airlines
Aug 3
STL6:30 pmLambert-St Louis
54h 15m
2 stops
GUM3:45 pmTamuning Guam Intl
Aug 7
GUM7:05 amTamuning Guam Intl
28h 35m
2 stops
STL8:40 pmLambert-St Louis
$1,712
United Airlines
Aug 3
STL6:01 amLambert-St Louis
66h 44m
3 stops
GUM3:45 pmTamuning Guam Intl
Aug 7
GUM7:05 amTamuning Guam Intl
28h 35m
2 stops
STL8:40 pmLambert-St Louis
$2,019
United Airlines
Oct 1
STL6:00 amLambert-St Louis
21h 05m
2 stops
GUM6:05 pmTamuning Guam Intl
Oct 5
GUM7:10 amTamuning Guam Intl
22h 00m
2 stops
STL2:10 pmLambert-St Louis
$2,229

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 June 22, 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

Mon 8/3

6:30 pm-3:45 pm

2 stops54h 15m

Tamuning Guam Intl

Fri 8/7

7:05 am-8:40 pm

2 stops28h 35m

$1,712

St. LouisTamuning

STL - GUM

STLGUM

Lambert-St Louis

Mon 8/3

6:01 am-3:45 pm

3 stops66h 44m

Tamuning Guam Intl

Fri 8/7

7:05 am-8:40 pm

2 stops28h 35m

$2,019

St. LouisTamuning

STL - GUM

STLGUM

Lambert-St Louis

Fri 8/14

8:00 am-3:35 pm

2 stops40h 35m

Tamuning Guam Intl

Wed 9/9

2:00 am-11:42 pm

2 stops36h 42m

$2,203

St. LouisTamuning

STL - GUM

STLGUM

Lambert-St Louis

Thu 10/1

6:00 am-6:05 pm

2 stops21h 05m

Tamuning Guam Intl

Mon 10/5

7:10 am-2:10 pm

2 stops22h 00m

$2,229

St. LouisTamuning

STL - GUM

STLGUM

Lambert-St Louis

Fri 10/30

6:40 am-7:00 pm

2 stops21h 20m

Tamuning Guam Intl

Tue 11/3

7:45 am-4:35 pm

2 stops24h 50m

$2,279

St. LouisTamuning

STL - GUM

STLGUM

Lambert-St Louis

Tue 7/7

6:00 am-11:55 pm

2 stops26h 55m

Tamuning Guam Intl

Mon 7/13

2:00 am-12:41 am

2 stops37h 41m

$2,453

St. LouisTamuning

STL - GUM

STLGUM

Lambert-St Louis

Fri 7/17

8:48 am-3:35 pm

2 stops39h 47m

Tamuning Guam Intl

Thu 7/23

2:00 am-10:15 pm

2 stops35h 15m

$2,628
Quickest round-trip

St. LouisTamuning

STL - GUM

STLGUM

Lambert-St Louis

Fri 8/14

6:15 am-6:05 pm

2 stops20h 50m

Tamuning Guam Intl

Thu 9/10

7:10 am-2:15 pm

3 stops22h 05m

$2,771

St. LouisTamuning

STL - GUM

STLGUM

Lambert-St Louis

Fri 7/17

5:10 am-6:05 pm

3 stops21h 55m

Tamuning Guam Intl

Fri 7/24

7:05 am-4:33 pm

2 stops24h 28m

$3,278

St. LouisTamuning

STL - GUM

STLGUM

Lambert-St Louis

Fri 7/17

5:10 am-6:05 pm

3 stops21h 55m

Tamuning Guam Intl

Fri 7/24

12:15 pm-7:23 pm

3 stops22h 08m

$7,329

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 12 resultsSorted by cheapest first
1
2

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.
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.

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Popular flights according to clicks in the last 7 days on momondo
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