How long is the flight from St. Louis to Guam?

Airlines like Delta and United Airlines fly from St. Louis to Guam in about 21h 05m. The time it takes to get you to your destination can typically vary by up to 15h 31m. The distance between St. Louis and Guam is about 7367 mi. This flight may include one or multiple stops.

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.

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).

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.

$2,053+ Flights from St. Louis to Guam

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Cheap flight deals from St. Louis to Guam

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 December 8, 2025.

Wed 12/106:15 amSTL - GUM

2 stops30h 05mUnited Airlines

Fri 12/127:40 amGUM - STL

2 stops24h 47mUnited Airlines

Deal found 12/6

$2,814

Fri 12/266:00 amSTL - GUM

2 stops21h 00mUnited Airlines

Sat 1/37:40 amGUM - STL

2 stops30h 50mUnited Airlines

Deal found 12/8

$3,100

Best flights from St. Louis to Guam
Discover carefully curated flight deals from St. Louis to Guam that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated December 8, 2025.

Thu 1/299:59 amSTL - GUM

2 stops36h 36mDelta

Wed 2/41:00 amGUM - STL

2 stops38h 37mDelta

Deal found 12/8

$2,053

Thu 1/296:00 amSTL - GUM

2 stops21h 05mUnited Airlines

Thu 2/57:40 amGUM - STL

2 stops25h 15mUnited Airlines

Deal found 12/8

$2,228

Fri 12/266:00 amSTL - GUM

2 stops21h 00mUnited Airlines

Sat 1/37:40 amGUM - STL

2 stops30h 50mUnited Airlines

Deal found 12/8

$3,100

Last-minute flights from St. Louis to Guam
Discover last-minute flight deals from St. Louis to Guam. Data last updated December 8, 2025 and is based on user searches.

Wed 12/106:15 amSTL - GUM

2 stops30h 05mUnited Airlines

Fri 12/127:40 amGUM - STL

2 stops24h 47mUnited Airlines

Deal found 12/6

$2,814

Fri 12/266:00 amSTL - GUM

2 stops21h 00mUnited Airlines

Sat 1/37:40 amGUM - STL

2 stops30h 50mUnited Airlines

Deal found 12/8

$3,100

Thu 1/299:59 amSTL - GUM

2 stops36h 36mDelta

Wed 2/41:00 amGUM - STL

2 stops38h 37mDelta

Deal found 12/8

$2,053

Thu 1/296:00 amSTL - GUM

2 stops21h 05mUnited Airlines

Thu 2/57:40 amGUM - STL

2 stops25h 15mUnited Airlines

Deal found 12/8

$2,228

Find flight deals from St. Louis to Guam

Most accurate provider	eDreams 3 stars
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Round-trip from	$2,053 (Delta)

Provider with most accurate pricing for Lambert-St Louis-Tamuning Guam Intl flight deals.

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From Lambert-St Louis to Guam

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Fly from

Fly to

Route

Depart

Return

Price

St. LouisTamuning

STL - GUM

STLGUM

Lambert-St Louis

Thu 1/29

9:59 am-2:35 pm

2 stops36h 36m

Tamuning Guam Intl

Wed 2/4

1:00 am-11:37 pm

2 stops38h 37m

$2,053

St. LouisTamuning

STL - GUM

STLGUM

Lambert-St Louis

Thu 1/29

6:00 am-7:05 pm

2 stops21h 05m

Tamuning Guam Intl

Thu 2/5

7:40 am-4:55 pm

2 stops25h 15m

$2,228

St. LouisTamuning

STL - GUM

STLGUM

Lambert-St Louis

Fri 12/26

6:00 am-7:00 pm

2 stops21h 00m

Tamuning Guam Intl

Sat 1/3

7:40 am-10:30 pm

2 stops30h 50m

$3,100

Flights are sorted by cheapest round-trip flights first.

Deals found on 12/8

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

No data available for this route at this time. Please check back soon.

Reviews of airlines servicing Guam

See what other customers who have flown with United Airlines from St. Louis to Guam have to say. You can also see how each airline compares in terms of entertainment options, comfort, food, crew/service, and boarding process.

United Airlines

7.4

Good

9,076 reviews

Reviews

1 / 20

10.0

Excellent

Sunderesh,Dec 2025

AUS - EWR

Smooth flight from Austin to Newark. The crew was friendly.

United Airlines

7.4

Good

9,076 reviews

United Airlines

7.4

Good

9,076 reviews

Reviews

1 / 20

10.0

Excellent

Sunderesh,Dec 2025

AUS - EWR

Smooth flight from Austin to Newark. The crew was friendly.

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.
How long is the flight from St. Louis to Guam?
Airlines like Delta and United Airlines fly from St. Louis to Guam in about 21h 05m. The time it takes to get you to your destination can typically vary by up to 15h 31m. The distance between St. Louis and Guam is about 7367 mi. This flight may include one or multiple stops.
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.

See more FAQs

Browse thousands of different options on Cheapflights for your next trip

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Top airline flying from St. Louis to Guam

Airline	Cheapest	Average	Flexibility	On-time
United Airlines	Cheapest$888	Average$2,227	FlexibilityNo cancel fee	On-time69%

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$2,053+ Cheap flights from St. Louis (STL) to Guam

This is the cheapest round-trip flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 1/29. Fares are subject to change and may not be available on all flights or dates of travel.

Find cheap flights from St. Louis to Guam with Cheapflights

1. Tell us where you want to go

2. Select your favorite providers

3. Compare prices and book

Cheap flight deals from St. Louis to Guam

Cheapest flights from St. Louis to GuamExplore 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 December 8, 2025.

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 December 8, 2025.

Find flight deals from St. Louis to Guam

Keep the following information in mind while searching for St. Louis to Guam flight deals. Data was last updated December 8, 2025.

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Round-trip from

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Use the filters below to find and compare flights from St. Louis to Guam that are best for you.

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.

Cheapflights Insights

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

Reviews of airlines servicing Guam

Get insights into the airlines that provide service to Guam. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to Guam. Reviews last updated December 8, 2025.

See what other customers who have flown with United Airlines from St. Louis to Guam have to say. You can also see how each airline compares in terms of entertainment options, comfort, food, crew/service, and boarding process.

Related info for your journey

Find useful and relevant information for your journey from St. Louis to Guam. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

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

How long is the flight from St. Louis to Guam?

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

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

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

Browse thousands of different options on Cheapflights for your next trip

Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.

Alternative routes for St. Louis to Guam

See prices for flight routes from nearby airports that may be better suited for you.

Top airline flying from St. Louis to Guam

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Book with Flexibility

Travel Smart

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 December 8, 2025.