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Cheap flights from St. Louis to Tamuning from $1,988

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 Tamuning departing on 10/17. 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

Find the cheapest flights from St. Louis to Tamuning

Cheap round-trip flights

Enter your travel dates to find the best prices.
United Airlines Logo
8:35 am - 3:50 pm
STL
-
GUM
64h 15m
2 stops
United Airlines Logo
7:10 am - 5:01 pm
GUM
-
STL
24h 51m
2 stops
$1,988United Airlines
Sat, Oct 17 - Wed, Oct 21
United Airlines Logo
1:36 pm - 6:05 pm
STL
-
GUM
61h 29m
2 stops
United Airlines Logo
7:10 am - 10:09 am
GUM
-
STL
41h 59m
2 stops
$2,018United Airlines
Sat, Sep 12 - Mon, Sep 21
United Airlines Logo
11:05 am - 3:50 pm
STL
-
GUM
61h 45m
2 stops
United Airlines Logo
7:10 am - 3:38 pm
GUM
-
STL
47h 28m
3 stops
$2,025United Airlines
Sat, Oct 17 - Wed, Oct 21
United Airlines Logo
1:36 pm - 6:05 pm
STL
-
GUM
61h 29m
2 stops
United Airlines Logo
7:10 am - 3:38 pm
GUM
-
STL
47h 28m
3 stops
$2,035United Airlines
Sat, Sep 12 - Mon, Sep 21
United Airlines Logo
6:00 am - 6:05 pm
STL
-
GUM
21h 05m
2 stops
United Airlines Logo
7:05 am - 6:17 pm
GUM
-
STL
26h 12m
2 stops
$2,182United Airlines
Mon, Jun 22 - Mon, Jun 29
Delta Logo
6:57 pm - 3:35 pm
STL
-
GUM
29h 38m
2 stops
Delta Logo
2:00 am - 1:10 pm
GUM
-
STL
26h 10m
2 stops
$2,429Delta
Tue, May 19 - Mon, May 25
United Airlines Logo
8:46 am - 6:05 pm
STL
-
GUM
42h 19m
2 stops
United Airlines Logo
7:30 pm - 6:17 pm
GUM
-
STL
37h 47m
2 stops
$2,492United Airlines
Sun, May 17 - Sun, May 24
United Airlines Logo
8:21 am - 6:05 pm
STL
-
GUM
42h 44m
3 stops
United Airlines Logo
7:30 pm - 6:17 pm
GUM
-
STL
37h 47m
2 stops
$2,498United Airlines
Sun, May 17 - Sun, May 24
United Airlines Logo
6:30 am - 6:05 pm
STL
-
GUM
44h 35m
3 stops
United Airlines Logo
5:00 pm - 6:17 pm
GUM
-
STL
40h 17m
2 stops
$2,508United Airlines
Tue, May 19 - Tue, May 26
United Airlines Logo
5:10 am - 6:05 pm
STL
-
GUM
21h 55m
3 stops
United Airlines Logo
7:05 am - 5:42 pm
GUM
-
STL
25h 37m
2 stops
$2,787United Airlines
Mon, Jun 22 - Mon, Jun 29

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United Airlines flights from St. Louis to Tamuning

Our best United Airlines deals on St. Louis to Tamuning flight tickets
United Airlines
Oct 17
STL8:35 amLambert-St Louis
64h 15m
2 stops
GUM3:50 pmTamuning Guam Intl
Oct 21
GUM7:10 amTamuning Guam Intl
24h 51m
2 stops
STL5:01 pmLambert-St Louis
$1,988
United Airlines
Sep 12
STL1:36 pmLambert-St Louis
61h 29m
2 stops
GUM6:05 pmTamuning Guam Intl
Sep 21
GUM7:10 amTamuning Guam Intl
41h 59m
2 stops
STL10:09 amLambert-St Louis
$2,018
United Airlines
Oct 17
STL11:05 amLambert-St Louis
61h 45m
2 stops
GUM3:50 pmTamuning Guam Intl
Oct 21
GUM7:10 amTamuning Guam Intl
47h 28m
3 stops
STL3:38 pmLambert-St Louis
$2,025

Delta flights from St. Louis to Tamuning

Our best Delta deals on St. Louis to Tamuning flight tickets
Delta
May 19
STL6:57 pmLambert-St Louis
29h 38m
2 stops
GUM3:35 pmTamuning Guam Intl
May 25
GUM2:00 amTamuning Guam Intl
26h 10m
2 stops
STL1:10 pmLambert-St Louis
$2,429
Delta
Apr 27
STL11:42 amLambert-St Louis
36h 53m
2 stops
GUM3:35 pmTamuning Guam Intl
May 24
GUM2:00 amTamuning Guam Intl
36h 21m
2 stops
STL11:21 pmLambert-St Louis
$2,654
Delta
Apr 26
STL3:25 pmLambert-St Louis
41h 30m
2 stops
GUM11:55 pmTamuning Guam Intl
May 24
GUM5:20 pmTamuning Guam Intl
38h 56m
2 stops
STL5:16 pmLambert-St Louis
$2,663

momondo Fare Finder

 
Customize your flight search to find flights from St. Louis to Tamuning 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 April 24, 2026.
Use the filters below to find and compare flights from St. Louis to Tamuning that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

St. LouisTamuning

STL - GUM

STLGUM

Lambert-St Louis

Sat 10/17

8:35 am-3:50 pm

2 stops64h 15m

Tamuning Guam Intl

Wed 10/21

7:10 am-5:01 pm

2 stops24h 51m

$1,988

St. LouisTamuning

STL - GUM

STLGUM

Lambert-St Louis

Sat 9/12

1:36 pm-6:05 pm

2 stops61h 29m

Tamuning Guam Intl

Mon 9/21

7:10 am-10:09 am

2 stops41h 59m

$2,018

St. LouisTamuning

STL - GUM

STLGUM

Lambert-St Louis

Sat 10/17

11:05 am-3:50 pm

2 stops61h 45m

Tamuning Guam Intl

Wed 10/21

7:10 am-3:38 pm

3 stops47h 28m

$2,025

St. LouisTamuning

STL - GUM

STLGUM

Lambert-St Louis

Sat 9/12

1:36 pm-6:05 pm

2 stops61h 29m

Tamuning Guam Intl

Mon 9/21

7:10 am-3:38 pm

3 stops47h 28m

$2,035
Quickest round-trip

St. LouisTamuning

STL - GUM

STLGUM

Lambert-St Louis

Mon 6/22

6:00 am-6:05 pm

2 stops21h 05m

Tamuning Guam Intl

Mon 6/29

7:05 am-6:17 pm

2 stops26h 12m

$2,182

St. LouisTamuning

STL - GUM

STLGUM

Lambert-St Louis

Tue 5/19

6:57 pm-3:35 pm

2 stops29h 38m

Tamuning Guam Intl

Mon 5/25

2:00 am-1:10 pm

2 stops26h 10m

$2,429

St. LouisTamuning

STL - GUM

STLGUM

Lambert-St Louis

Sun 5/17

8:46 am-6:05 pm

2 stops42h 19m

Tamuning Guam Intl

Sun 5/24

7:30 pm-6:17 pm

2 stops37h 47m

$2,492

St. LouisTamuning

STL - GUM

STLGUM

Lambert-St Louis

Sun 5/17

8:21 am-6:05 pm

3 stops42h 44m

Tamuning Guam Intl

Sun 5/24

7:30 pm-6:17 pm

2 stops37h 47m

$2,498

St. LouisTamuning

STL - GUM

STLGUM

Lambert-St Louis

Tue 5/19

6:30 am-6:05 pm

3 stops44h 35m

Tamuning Guam Intl

Tue 5/26

5:00 pm-6:17 pm

2 stops40h 17m

$2,508

St. LouisTamuning

STL - GUM

STLGUM

Lambert-St Louis

Mon 6/22

5:10 am-6:05 pm

3 stops21h 55m

Tamuning Guam Intl

Mon 6/29

7:05 am-5:42 pm

2 stops25h 37m

$2,787

Flights are sorted by cheapest round-trip flights first.

Sorted by cheapest first

When to book flights from St. Louis to Tamuning

Are you open to changing your travel dates? Check out the ideal times to fly from St. Louis to Tamuning according to our flight data. Find out which month and days have the cheapest flights.
Estimated round-trip price

Cheap St. Louis to Tamuning (STL to GUM) flight deals and tips

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

Fastest flight time

21h 05m

Direct flights

None
The fastest flight from St. Louis to Tamuning takes 21h 05m
There are no direct flights from St. Louis to Tamuning. There are no popular flight routes from St. Louis to Tamuning.
Search flight deals

Frequently asked questions about flying from St. Louis to Tamuning

  • How far is Lambert-St Louis to Tamuning Guam Intl by plane?

    There are 7379.5 mi between Lambert-St Louis and Tamuning Guam Intl. In terms of flight time, this usually takes a little over 21h 05m.

  • When did momondo last update prices for flights from Lambert-St Louis Airport to Tamuning Guam Intl Airport?

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

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

    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 Tamuning Guam Intl Airport.

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

    The necessary travel and health documents for your Tamuning Guam Intl Airport 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 Tamuning

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

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

  • How can I save money on flights from St. Louis to Tamuning 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 Tamuning?

It is quick and easy to find St. Louis to Tamuning flights on momondo. We search and return numerous flight options from various airlines and agents. You can then use our filters to narrow your search until you have found the most convenient flight to Tamuning that suits you.

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

Yes. momondo allows you to filter the results for St. Louis to Tamuning flights to just show those with flexible booking policies.

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

momondo provides multiple filters to help you find the best flight to Tamuning 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 Tamuning right now. Can momondo alert me if prices change?

If you are not ready to book a flight from St. Louis to Tamuning now, use our insights above to find helpful tips or alternatively set up a price alert, where momondo will track prices on flights to Tamuning and let you know when they change.

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Cabin classes currently available on flights to Tamuning

List of cabin classes available on flights landing in Tamuning. Availability may vary depending on flight origin and airline.
First Class to Tamuning
Business Class to Tamuning