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Cheap flights from St. Louis to Tamuning from $1,343

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 Tamuning departing on 6/25. 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 Tamuning

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
United Airlines Logo
6:00 am - 6:05 pm
STL
-
GUM
21h 05m
2 stops
United Airlines Logo
7:30 pm - 11:29 pm
GUM
-
STL
42h 59m
2 stops
$2,434United Airlines
Fri, Aug 7 - Sun, Aug 9
United Airlines Logo
6:14 am - 6:05 pm
STL
-
GUM
20h 51m
2 stops
United Airlines Logo
7:05 am - 12:42 pm
GUM
-
STL
20h 37m
2 stops
$2,529United Airlines
Tue, Jul 7 - Tue, Jul 14
United Airlines Logo
6:14 am - 6:05 pm
STL
-
GUM
20h 51m
2 stops
United Airlines Logo
7:30 pm - 9:26 pm
GUM
-
STL
40h 56m
2 stops
$2,954United Airlines
Mon, Jun 22 - Wed, Jun 24
United Airlines Logo
5:10 am - 6:05 pm
STL
-
GUM
21h 55m
3 stops
United Airlines Logo
7:05 am - 12:42 pm
GUM
-
STL
20h 37m
2 stops
$3,559United Airlines
Mon, Jun 22 - Wed, Jun 24
United Airlines Logo
5:10 am - 6:05 pm
STL
-
GUM
21h 55m
3 stops
United Airlines Logo
12:15 pm - 6:17 pm
GUM
-
STL
21h 02m
2 stops
$3,646United Airlines
Fri, Aug 7 - Sun, Aug 9
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
Mon, Aug 3 - Fri, Aug 7

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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
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
Aug 7
STL6:00 amLambert-St Louis
21h 05m
2 stops
GUM6:05 pmTamuning Guam Intl
Aug 9
GUM7:30 pmTamuning Guam Intl
42h 59m
2 stops
STL11:29 pmLambert-St Louis
$2,434

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 June 18, 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

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 8/7

6:00 am-6:05 pm

2 stops21h 05m

Tamuning Guam Intl

Sun 8/9

7:30 pm-11:29 pm

2 stops42h 59m

$2,434
Quickest round-trip

St. LouisTamuning

STL - GUM

STLGUM

Lambert-St Louis

Tue 7/7

6:14 am-6:05 pm

2 stops20h 51m

Tamuning Guam Intl

Tue 7/14

7:05 am-12:42 pm

2 stops20h 37m

$2,529

St. LouisTamuning

STL - GUM

STLGUM

Lambert-St Louis

Mon 6/22

6:14 am-6:05 pm

2 stops20h 51m

Tamuning Guam Intl

Wed 6/24

7:30 pm-9:26 pm

2 stops40h 56m

$2,954

St. LouisTamuning

STL - GUM

STLGUM

Lambert-St Louis

Mon 6/22

5:10 am-6:05 pm

3 stops21h 55m

Tamuning Guam Intl

Wed 6/24

7:05 am-12:42 pm

2 stops20h 37m

$3,559

St. LouisTamuning

STL - GUM

STLGUM

Lambert-St Louis

Fri 8/7

5:10 am-6:05 pm

3 stops21h 55m

Tamuning Guam Intl

Sun 8/9

12:15 pm-6:17 pm

2 stops21h 02m

$3,646

St. LouisTamuning

STL - GUM

STLGUM

Lambert-St Louis

Mon 8/3

5:10 am-6:05 pm

3 stops21h 55m

Tamuning Guam Intl

Fri 8/7

12:15 pm-7:23 pm

3 stops22h 08m

$7,329
Cheapest one-way

St. LouisTamuning

STL - GUM

STLGUM

Lambert-St Louis

Thu 6/25

6:02 am-11:45 pm

2 stops50h 43m

$1,343
Quickest one-way

St. LouisTamuning

STL - GUM

STLGUM

Lambert-St Louis

Thu 6/25

6:01 am-6:05 pm

3 stops45h 04m

$1,868

Flights are sorted by cheapest round-trip flights first.

Sorted by cheapest first

See travel insights to Tamuning from

How to get the cheapest flight ticket from St. Louis to Tamuning

Look no further. We've gone through all the searches for this route on momondo so you have the important information and insights to find the cheapest flight ticket for your trip

What is the cheapest airline that flies from Lambert-St Louis to Tamuning Guam Intl?

United Airlines is the most popular carrier operating from Lambert-St Louis to Tamuning Guam Intl

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

20h 51m

Direct flights

None
The fastest flight from St. Louis to Tamuning takes 20h 51m
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 20h 51m.

  • 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.

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