In terms of precipitation, rainfall in Tonga ranges from 3.7 - 8.3 inches per month. February is typically the wettest month, when rainfall can reach 8.3 in. June is typically the driest time to visit Tonga when rainfall is around 3.7 in.

If weather is an important factor for your trip to Tonga, use this chart to help with planning. For those seeking warmer temperatures, February is the ideal time of year to visit, when temperatures reach an average of 80.6 F. Travelers looking to avoid the cold should look outside of July, when temperatures are typically at their lowest (around 71.6 F).

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

When flying from St. Louis to Tonga, 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 Tonga?

Most people fly from Lambert-St Louis (STL) if they book a flight from St. Louis to Tonga. Lambert-St Louis is conveniently located just 12.7 mi from St. Louis’s city center.

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

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

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

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

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

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

$1,408+ Flights from St. Louis to Tonga

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Cheap flight deals from St. Louis to Tonga

Round-trip from	$1,408 (Fiji Airways)

From Lambert-St Louis to Tonga

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Find flight deals from St. Louis to Tonga

Cheapest flights from St. Louis to Tonga
Explore the most affordable flight options available from St. Louis to Tonga. Find the lowest fares from popular airlines and budget airlines, with prices last updated on julio 30, 2025.

sáb. 8/235:52 pmSTL - TBU

2 stops37h 13mFiji Airways

mar. 8/266:20 pmTBU - STL

2 stops20h 02mFiji Airways

Deal found 7/28

$1,408

Best flights from St. Louis to Tonga
Discover carefully curated flight deals from St. Louis to Tonga that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated julio 30, 2025.

sáb. 8/235:52 pmSTL - TBU

2 stops37h 13mFiji Airways

mar. 8/266:20 pmTBU - STL

2 stops20h 02mFiji Airways

Deal found 7/28

$1,408

Last-minute flights from St. Louis to Tonga
Discover last-minute flight deals from St. Louis to Tonga. Data last updated julio 30, 2025 and is based on user searches.

sáb. 8/235:52 pmSTL - TBU

2 stops37h 13mFiji Airways

mar. 8/266:20 pmTBU - STL

2 stops20h 02mFiji Airways

Deal found 7/28

$1,408

Fly from

Fly to

Route

Depart

Return

Price

St. LouisNuku‘alofa

STL - TBU

STLTBU

Lambert-St Louis

sáb. 8/23

5:52 pm-1:05 am

2 stops37h 13m

Nuku‘alofa Fua'Amotu Intl

mar. 8/26

6:20 pm-8:22 pm

2 stops20h 02m

$1,408

Flights are sorted by cheapest round-trip flights first.

Deals found on 7/28

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

Have a flexible travel schedule? Discover the best time to fly to Tonga 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 Tonga

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

Reviews of airlines servicing Tonga

Peruse reviews from past customers who have flown with Fiji Airways from St. Louis to Tonga to help guide your decision. You can also see how each airline stacks up in terms of entertainment options, comfort, food, crew/service, and boarding process.

Fiji Airways

8.0

Very good

202 reviews

Reviews

1 / 16

6.0

Good

Christopher,Jun 2025

LAX - NAN

No attempt to make you comfortable. All they care about is how can they pack more people on the plane and how can they charge you for as much as possible. I find it invasive and discriminatory that you weigh my carryon (or any of my naggage frankly). If I physically weighed 15kilos more and my bag weighed under your stupid and arbitrary weight limit I would not be charged... but if I'm a person who is skinny and weighs less, well heaven forbid my bag is 1 kilo heavier than you wish!! $$$ VERY VERY DISCRIMINATORY POLICY!! NEXT TIME I'LL TRY TO EAT MY BAGGAGE SO THAT I CAN TAKE ON AS MUCH WEIGHT AS I WANT! Yeah... sounds ridiculous doesn't it!? No more ridiculous than you charging more for people who bring more baggage weight while letting obese people carry on all the weight they want! It just proves it has absolutely nothing to do with safety, or even your operating costs... Just squeezing as much money out of us as possible!!

Fiji Airways

8.0

Very good

202 reviews

Fiji Airways

8.0

Very good

202 reviews

Reviews

1 / 16

6.0

Good

Christopher,Jun 2025

LAX - NAN

Related info for your journey

What airport do you fly from for flights from St. Louis to Tonga?
Most people fly from Lambert-St Louis (STL) if they book a flight from St. Louis to Tonga. Lambert-St Louis is conveniently located just 12.7 mi from St. Louis’s city center.
Can I find deals for flights from St. Louis to Tonga that include hotel bookings?
Yes. In addition to deals on St. Louis to Tonga flights, Cheapflights offers vacation packages that include both flights and hotel.
How can I find direct flights from St. Louis to Tonga?
After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from St. Louis to Tonga.
Can I find deals for business class flights from St. Louis to Tonga?
Yes. Cheapflights offers flight deals from St. Louis to Tonga by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

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$1,408+ Cheap flights from St. Louis (STL) to Tonga

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 8/23. Fares are subject to change and may not be available on all flights or dates of travel.

Find cheap flights from St. Louis to Tonga 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 Tonga

Keep the following information in mind while searching for St. Louis to Tonga flight deals. Data was last updated julio 30, 2025.

Round-trip from

Find flight deals from St. Louis to Tonga

Cheapest flights from St. Louis to TongaExplore the most affordable flight options available from St. Louis to Tonga. Find the lowest fares from popular airlines and budget airlines, with prices last updated on julio 30, 2025.

Explore the most affordable flight options available from St. Louis to Tonga. Find the lowest fares from popular airlines and budget airlines, with prices last updated on julio 30, 2025.

Cheapflights Fare Finder

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

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

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

Cheapflights Insights

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

Reviews of airlines servicing Tonga

Get insights into the airlines that provide service to Tonga. 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 Tonga. Reviews last updated julio 30, 2025.

Peruse reviews from past customers who have flown with Fiji Airways from St. Louis to Tonga to help guide your decision. You can also see how each airline stacks up 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 Tonga. 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 Tonga?

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

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

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

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 Tonga

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Cheapest flights from St. Louis to Tonga
Explore the most affordable flight options available from St. Louis to Tonga. Find the lowest fares from popular airlines and budget airlines, with prices last updated on julio 30, 2025.