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Cheap flights from St. Louis to Tamuning from $1,210

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 9/22. 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.
Multiple Airlines Logo
3:19 pm - 3:35 pmSTL  Lambert-St Louis-GUM Tamuning Guam Intl
57h 16m2 stops Seattle/Tacoma Intl Incheon Intl
Multiple Airlines Logo
5:20 pm - 6:38 pmGUM  Tamuning Guam Intl-STL Lambert-St Louis
64h 18m2 stops Incheon Intl Seattle/Tacoma Intl
$1,210Multiple Airlines
Tue, Sep 22 - Tue, Sep 29
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
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
Delta Logo
5:46 pm - 3:35 pmSTL  Lambert-St Louis-GUM Tamuning Guam Intl
30h 49m2 stops Atlanta Hartsfield-Jackson Incheon Intl
Delta Logo
2:00 am - 11:54 pmGUM  Tamuning Guam Intl-STL Lambert-St Louis
36h 54m2 stops Incheon Intl Atlanta Hartsfield-Jackson
$2,154Delta
Sat, Sep 26 - Thu, Oct 8

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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
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
United Airlines
Nov 1
STL7:05 pmLambert-St Louis
31h 55m
2 stops
GUM7:00 pmTamuning Guam Intl
Feb 7
GUM7:55 pmTamuning Guam Intl
43h 14m
2 stops
STL11:09 pmLambert-St Louis
$1,944
United Airlines
Dec 4
STL11:00 amLambert-St Louis
60h 45m
2 stops
GUM3:45 pmTamuning Guam Intl
Dec 8
GUM7:45 amTamuning Guam Intl
24h 41m
2 stops
STL4:26 pmLambert-St Louis
$1,975

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 August 9, 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 Lambert-St Louis - GUM Tamuning Guam Intl

STLGUM

Lambert-St Louis

Tue 9/22

3:19 pm-3:35 pm

2 stops57h 16m

Tamuning Guam Intl

Tue 9/29

5:20 pm-6:38 pm

2 stops64h 18m

$1,210
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

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

St. LouisTamuning

STL Lambert-St Louis - GUM Tamuning Guam Intl

STLGUM

Lambert-St Louis

Sat 9/26

5:46 pm-3:35 pm

2 stops30h 49m

Tamuning Guam Intl

Thu 10/8

2:00 am-11:54 pm

2 stops36h 54m

$2,154

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 00m

Direct flights

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

  • 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