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$1,005+ Cheap flights from San Francisco (SFO) 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 1/21. Fares are subject to change and may not be available on all flights or dates of travel.
SFO — TBU
Jan 11 — Jan 181
Sun 1/11
Sun 1/18
1 adult, Economy
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Cheap flight deals from San Francisco to Tonga

Cheapest flights from San Francisco to Tonga
Explore the most affordable flight options available from San Francisco to Tonga. Find the lowest fares from popular airlines and budget airlines, with prices last updated on December 12, 2025.

This oojo deal was found by Cheapflights users on 12/9. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 12/279:45 pmSFO - TBU
1 stop30h 20mFiji Airways
Fri 1/234:00 pmTBU - SFO
1 stop17h 25mFiji Airways
Deal found 12/9$1,250
This Gotogate deal was found by Cheapflights users on 12/11. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Gotogate is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 12/279:45 pmSFO - TBU
1 stop30h 20mMultiple Airlines
Fri 1/2311:20 amTBU - SFO
1 stop20h 45mMultiple Airlines
Deal found 12/11$1,346
This oojo deal was found by Cheapflights users on 12/10. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/304:11 pmSFO - TBU
2 stops36h 39mFiji Airways
Tue 1/65:40 amTBU - SFO
2 stops35h 30mFiji Airways
Deal found 12/10$1,621
This oojo deal was found by Cheapflights users on 12/10. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 12/1410:05 pmSFO - TBU
1 stop30h 45mMultiple Airlines
Tue 12/235:40 amTBU - SFO
2 stops32h 30mMultiple Airlines
Deal found 12/10$1,650

Find flight deals from San Francisco to Tonga

Keep the following information in mind while searching for San Francisco to Tonga flight deals. Data was last updated December 12, 2025.

Most accurate provider

Justfly.com
3 stars

Most trusted provider

Justfly.com
3 stars

Round-trip from

$1,005
(oojo)

Popular in

December

Cheapest in

February

Average price

$1,863
Provider with most accurate pricing for San Francisco-Nuku‘alofa Fua'Amotu Intl flight deals.
Search Deals
Provider most trusted by Cheapflights users for San Francisco-Nuku‘alofa Fua'Amotu Intl flights.
Search Deals
From San Francisco to Tonga
Search Deals
Highest demand for flights based on searches. 6% potential increase in price ($83 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 4% potential price decrease ($52 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in December 2025
Search Deals

Cheapflights Fare Finder

 
Customize your flight search to find flights from San Francisco to Tonga 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, Cheapflights users made 2,558,603 searches. Data last updated December 12, 2025.
Use the filters below to find and compare flights from San Francisco to Tonga that are best for you.

Fly from

San Francisco

Fly to

Tonga

Route

Depart

Return

Price

San FranciscoNuku‘alofa

SFO - TBU

SFOTBU

San Francisco

Mon 1/12

7:00 pm-10:00 am

2 stops18h 00m

Nuku‘alofa Fua'Amotu Intl

Tue 1/20

5:00 am-8:10 pm

2 stops36h 10m

$1,109

San FranciscoNuku‘alofa

SFO - TBU

SFOTBU

San Francisco

Thu 2/19

6:43 pm-3:00 pm

2 stops23h 17m

Nuku‘alofa Fua'Amotu Intl

Mon 2/23

9:35 pm-11:05 am

1 stop34h 30m

$1,154

San FranciscoNuku‘alofa

SFO - TBU

SFOTBU

San Francisco

Sat 12/27

9:45 pm-1:05 am

1 stop30h 20m

Nuku‘alofa Fua'Amotu Intl

Fri 1/23

4:00 pm-12:25 pm

1 stop17h 25m

$1,296

San FranciscoNuku‘alofa

SFO - TBU

SFOTBU

San Francisco

Sat 12/27

9:45 pm-1:05 am

1 stop30h 20m

Nuku‘alofa Fua'Amotu Intl

Fri 1/23

11:20 am-11:05 am

1 stop20h 45m

$1,353

San FranciscoNuku‘alofa

SFO - TBU

SFOTBU

San Francisco

Mon 1/12

6:34 pm-1:05 am

3 stops33h 31m

Nuku‘alofa Fua'Amotu Intl

Tue 1/20

5:00 am-8:10 pm

2 stops36h 10m

$1,602

San FranciscoNuku‘alofa

SFO - TBU

SFOTBU

San Francisco

Thu 2/19

7:50 pm-8:20 pm

1 stop27h 30m

Nuku‘alofa Fua'Amotu Intl

Mon 2/23

9:35 pm-11:05 am

1 stop34h 30m

$1,775

Flights are sorted by cheapest round-trip flights first.

Deals found on 12/10

Best time to book a flight from San Francisco to Tonga

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

What is the cheapest month to book a flight from San Francisco to Tonga?

Currently, October is the cheapest month in which you can book a flight from San Francisco to Tonga (average of $445). Flying from San Francisco to Tonga in June is currently the most expensive (average of $1,312). 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 SFO to TO?

Find hourly flight availability from San Francisco to Tonga. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated December 12, 2025.

A simple way to save on the total cost of your ticket is to fly from San Francisco to Tonga in the evening. If you’re flexible enough to do this you can expect to save up to 23% on your trip compared to booking a flight in the afternoon.

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 December 12, 2025.
Peruse reviews from past customers who have flown with Fiji Airways and Air New Zealand from San Francisco 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
8.1
Very good
210 reviews

Food

7.5

Boarding

8.2

Comfort

8.0

Overall

8.1

Entertainment

7.5

Crew

8.5

Reviews

1 / 17
10.0
Excellent

Anonymous,Oct 2025

CNS - NAN

Food service: Outstanding. Comfort of seating and usual things: Also outstanding.
Fiji Airways
8.1
Very good
210 reviews
Fiji Airways
8.1
Very good
210 reviews

Food

7.5

Boarding

8.2

Comfort

8.0

Overall

8.1

Entertainment

7.5

Crew

8.5

Reviews

1 / 17
10.0
Excellent

Anonymous,Oct 2025

CNS - NAN

Food service: Outstanding. Comfort of seating and usual things: Also outstanding.
Air New Zealand
8.0
Very good
552 reviews
Fiji Airways
8.1
Very good
210 reviews

Food

7.5

Boarding

8.2

Comfort

8.0

Overall

8.1

Entertainment

7.5

Crew

8.5

Reviews

1 / 17
10.0
Excellent

Anonymous,Oct 2025

CNS - NAN

Food service: Outstanding. Comfort of seating and usual things: Also outstanding.

Related info for your journey

Find useful and relevant information for your journey from San Francisco 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 San Francisco to Tonga?

    For a flight from San Francisco to Tonga, you will be flying from San Francisco. San Francisco (SFO) is just 11.8 mi from the center of the city.

  • How long is the flight from San Francisco to Tonga?

    Fiji Airways can get you from San Francisco to Tonga in just under 30h 20m. Your travel time can differ by up to . The distance between San Francisco and Tonga is about 5314 mi.

  • Can I find deals for flights from San Francisco to Tonga that include hotel bookings?

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

  • How can I find direct flights from San Francisco to Tonga?

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

  • Can I find deals for business class flights from San Francisco to Tonga?

    Yes. Cheapflights offers flight deals from San Francisco 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.

  • What is the cheapest month to book a flight from San Francisco to Tonga?

    Currently, October is the cheapest month in which you can book a flight from San Francisco to Tonga (average of $445). Flying from San Francisco to Tonga in June is currently the most expensive (average of $1,312). 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.

See more FAQs

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Top 2 airlines flying from San Francisco to Tonga

Discover the top 2 airlines that operate flights from San Francisco to Tonga. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated December 12, 2025.
AirlineCheapestAverageFlexibilityOn-time
Fiji AirwaysCheapest$609Average$1,530FlexibilityNo cancel feeOn-time74%
Air New ZealandCheapest$1,363Average$1,772FlexibilityNo cancel feeOn-time78%

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