What is the cheapest month to book a flight from St. Louis to Guam?

Currently, January is the cheapest month in which you can book a flight from St. Louis to Guam (average of $1,977). Flying from St. Louis to Guam in May is currently the most expensive (average of $2,214). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

What is the cheapest time of day to fly from STL to GU?

When flying from St. Louis to Guam, the time of day you decide to fly out makes little to no difference towards the overall price you’ll pay on tickets.

What airport do you fly from for flights from St. Louis to Guam?

If you book a flight to Guam from St. Louis, you will be flying from Lambert-St Louis, which is the city’s only airport. Lambert-St Louis (STL) is located 12.7 mi from the center of St. Louis.

Can I find deals for flights from St. Louis to Guam that include hotel bookings?

Yes. In addition to deals on St. Louis to Guam flights, Cheapflights offers vacation packages that include both flights and hotel.

How can I find direct flights from St. Louis to Guam?

After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from St. Louis to Guam.

Can I find deals for business class flights from St. Louis to Guam?

Yes. Cheapflights offers flight deals from St. Louis to Guam by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

$2,067+ Flights from St. Louis to Guam

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Cheap flight deals from St. Louis to Guam

Most accurate provider	FlightHub 3 stars
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Provider with most accurate pricing for Lambert-St Louis-Tamuning Guam Intl flight deals.

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Cheapest flights from St. Louis to Guam
Explore the most affordable flight options available from St. Louis to Guam. Find the lowest fares from popular airlines and budget airlines, with prices last updated on březen 31, 2025.

pá 8/16:33 amSTL - GUM

2 stops20h 32mUnited Airlines

po 8/117:00 amGUM - STL

2 stops29h 50mUnited Airlines

Deal found 3/30

$2,067

Cheapflights Fare Finder

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

St. LouisTamuning

STL - GUM

STLGUM

Lambert-St Louis

pá 8/1

6:33 am-6:05 pm

2 stops20h 32m

Tamuning Guam Intl

po 8/11

7:00 am-9:50 pm

2 stops29h 50m

$2,067

Flights are sorted by cheapest round-trip flights first.

Deals found on 3/30

Best time to book a flight from St. Louis to Guam

Have a flexible travel schedule? Discover the best time to fly to Guam from St. Louis with our price prediction graph.

Estimated round-trip price

Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.

Cheapflights Insights

Everything you need to know about your flight from St. Louis to Guam

Rainfall in Guam by month

In terms of precipitation, rainfall in Guam ranges from 2.6 - 14.4 inches per month. August is typically the wettest month, when rainfall can reach 14.4 in. March is typically the driest time to visit Guam when rainfall is around 2.6 in.

Temperature in Guam by month

If weather is an important factor for your trip to Guam, use this chart to help with planning. For those seeking warmer temperatures, April is the ideal time of year to visit, when temperatures reach an average of 82.4 F. Travelers looking to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 80.6 F).

Related info for your journey

What airport do you fly from for flights from St. Louis to Guam?
If you book a flight to Guam from St. Louis, you will be flying from Lambert-St Louis, which is the city’s only airport. Lambert-St Louis (STL) is located 12.7 mi from the center of St. Louis.
Can I find deals for flights from St. Louis to Guam that include hotel bookings?
Yes. In addition to deals on St. Louis to Guam flights, Cheapflights offers vacation packages that include both flights and hotel.
How can I find direct flights from St. Louis to Guam?
After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from St. Louis to Guam.
Can I find deals for business class flights from St. Louis to Guam?
Yes. Cheapflights offers flight deals from St. Louis to Guam by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.
What is the cheapest month to book a flight from St. Louis to Guam?
Currently, January is the cheapest month in which you can book a flight from St. Louis to Guam (average of $1,977). Flying from St. Louis to Guam in May is currently the most expensive (average of $2,214). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

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Top airline flying from St. Louis to Guam

Airline	Cheapest	Average	Flexibility	On-time
United Airlines	Cheapest$1,916	Average$2,326	FlexibilityNo cancel fee	On-time69%

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