$559 Find Cheap Flights from San Francisco to Tonga

This is the cheapest one-way flight price found by a KAYAK user in the last 72 hours by searching for a flight from San Francisco to Tonga departing on 9/30. Fares are subject to change and may not be available on all flights or dates of travel. Click the price to replicate the search for this deal.
1 adult
1 adult, Economy

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Cheap Flights from San Francisco to Tonga

Cheapest round-trip prices found by our users on KAYAK in the last 72 hours
Nuku‘alofa
Nuku‘alofa2 stops$1,057
Nuku‘alofa
Nuku‘alofa2 stops$1,057

Book Cheap San Francisco to Tonga Plane Tickets

 
Here are some of the best deals found on KAYAK recently from the most popular airlines for round-trip flights from San Francisco to Tonga that are departing in the next months. While these flights were available on KAYAK in the last 72 hours, prices and availability are subject to change and deals may expire.
Discover the best prices for you by selecting your travel dates on KAYAK.

Recent round-trip flight deals from San Francisco to Tonga

Wed, Jan 28 - Wed, Feb 4
Multiple Airlines Logo
4:15 pm - 3:25 pmSFO-TBU
26h 10m2 stops
Multiple Airlines Logo
1:10 pm - 11:05 amTBU-SFO
18h 55m1 stop
$1,057Multiple Airlines
Find Deal
Wed, Jan 28 - Wed, Feb 4
Multiple Airlines Logo
10:05 pm - 3:25 pmSFO-TBU
20h 20m1 stop
Multiple Airlines Logo
1:10 pm - 7:05 amTBU-SFO
38h 55m1 stop
$1,081Multiple Airlines
Find Deal
Sun, Nov 2 - Sat, Nov 22
Fiji Airways Logo
10:05 pm - 1:05 amSFO-TBU
30h 00m1 stop
Fiji Airways Logo
4:25 pm - 6:24 pmTBU-SFO
22h 59m2 stops
$1,157Fiji Airways
Find Deal
Wed, Jan 28 - Wed, Feb 4
Fiji Airways Logo
4:15 pm - 3:25 pmSFO-TBU
26h 10m2 stops
Fiji Airways Logo
5:40 am - 3:44 pmTBU-SFO
31h 04m2 stops
$1,165Fiji Airways
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Sun, Oct 12 - Mon, Oct 27
Fiji Airways Logo
11:25 pm - 1:05 amSFO-TBU
29h 40m1 stop
Fiji Airways Logo
11:20 am - 6:43 pmTBU-SFO
27h 23m2 stops
$1,168Fiji Airways
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Tue, Oct 21 - Thu, Nov 6
Fiji Airways Logo
7:00 pm - 3:25 pmSFO-TBU
24h 25m2 stops
Fiji Airways Logo
4:25 pm - 6:26 pmTBU-SFO
23h 01m2 stops
$1,193Fiji Airways
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Tue, Oct 7 - Tue, Oct 21
Multiple Airlines Logo
12:00 pm - 3:25 pmSFO-TBU
31h 25m2 stops
Multiple Airlines Logo
11:20 am - 11:50 amTBU-SFO
20h 30m1 stop
$1,231Multiple Airlines
Find Deal
Tue, Oct 7 - Tue, Oct 21
Air New Zealand Logo
9:05 pm - 10:10 amSFO-TBU
17h 05m1 stop
Air New Zealand Logo
11:20 am - 11:50 amTBU-SFO
20h 30m1 stop
$1,679Air New Zealand
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Mon, Nov 3 - Tue, Nov 25
Air New Zealand Logo
1:25 pm - 11:55 amSFO-TBU
25h 30m2 stops
Air New Zealand Logo
9:35 pm - 11:05 amTBU-SFO
34h 30m1 stop
$1,693Air New Zealand
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Thu, Oct 30 - Wed, Nov 26
Air New Zealand Logo
8:50 pm - 8:20 pmSFO-TBU
27h 30m1 stop
Air New Zealand Logo
1:10 pm - 11:05 amTBU-SFO
18h 55m1 stop
$1,713Air New Zealand
Find Deal
Booking Insights

KAYAK's insights & trends for San Francisco to Tonga flights

Get data-powered insights and trends into flights from San Francisco to Tonga to help you find the cheapest flights, the best time to fly and much more.

What is the cheapest month to fly from San Francisco to Tonga?

To calculate monthly average prices, KAYAK takes all prices for each month over the last year for round-trip flights from San Francisco to Tonga, removes the top 0.1% to account for outliers, and then takes the median of all values for each month.

The cheapest month for flights from San Francisco to Tonga is May, when tickets cost $1,064 (return) on average. On the other hand, the most expensive months are December and November, when the average cost of round-trip tickets is $1,830 and $1,800 respectively.

What’s the cheapest day of the week to fly from San Francisco to Tonga?

The average price of all round-trip flights from San Francisco to Tonga clicked on KAYAK for each day over the last 12 months.

If your flying dates are flexible, you should consider flying to Tonga on a Tuesday, as we generally find the cheapest rates on that day for this route. On the other hand, Monday is the most expensive day to fly from San Francisco to Tonga. For your return ticket, we recommend flying on a Thursday and avoiding Saturdays for the best deals.

How far in advance should I book a flight from San Francisco to Tonga?

To calculate weekly average prices, KAYAK takes all prices for each week before departure over the last year for round-trip flights from San Francisco to Tonga, removes the top 0.1% to account for outliers, and then takes the average of all the values for each week.

To get a below average price on the flight from San Francisco to Tonga, you should book around 2 weeks before departure, which saves you about 15% compared to booking last minute. For the absolute cheapest price, our data suggests you should book 15 weeks before departure.

Good to know

Low seasonJanuary
Cheapest flight$559
Best time to beat the crowds with an average 1% drop in price.
Most popular time to fly and prices are also 10% lower on average.
Flight from San Francisco to Nuku‘alofa

FAQs - booking Tonga flights

  • How does KAYAK find such low prices on flights from San Francisco to Tonga?

    KAYAK is a travel search engine. That means we look across the web to find the best prices we can find for our users. With over 2 billion flight queries processed yearly, we are able to display a variety of prices and options on flights from San Francisco to Tonga.

  • How does KAYAK's flight Price Forecast tool help me choose the right time to buy my flight ticket from San Francisco to Tonga?

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight from San Francisco to Tonga is likely to change within 7 days, so travelers know whether to wait or book now.

  • What is the Hacker Fare option on flights from San Francisco to Tonga?

    Hacker Fares allow you to combine one-way tickets in order to save you money over a traditional round-trip ticket. You could then fly from San Francisco to Tonga with an airline and back with another airline.

  • What is KAYAK's "flexible dates" feature and why should I care when looking for a flight from San Francisco to Tonga?

    Sometimes travel dates aren't set in stone. If your preferred travel dates have some wiggle room, flexible dates will show you all the options when flying from San Francisco to Tonga up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

  • What is the cheapest time of day to fly to Tonga?

    The cheapest time of day to fly to Tonga is generally at night, when round-trip flights cost $1,421 on average. Morning departures are around 100% cheaper than evening flights, on average. The most expensive time of day to fly to Tonga is generally in the evening, which is peak travel time and where the average cost of a ticket is $1,877.

Reviews of the top airlines flying from San Francisco to Tonga

 
Need help choosing which airline to fly with from San Francisco to Tonga? KAYAK airline reviews give an overall score for each airline based on loads of factors, including comfort, boarding, in-flight entertainment and more, to make your decision easier. See airline scores according to verified KAYAK customer reviews.
8.0
Fiji AirwaysOverall score based on 205 reviews
8.0Comfort
7.4Entertainment
8.5Crew
8.1Boarding
7.5Food
Airline reviews

Again, Fijian hospitality was genuine, very comfortable, only improvement would be the entertainment. Why Do they only have 5 episodes of TV shows and from like season three...

10.0 ExcellentMatthew, Aug 2025NAN - CNS
Read more Fiji Airways reviews

Again, Fijian hospitality was genuine, very comfortable, only improvement would be the entertainment. Why Do they only have 5 episodes of TV shows and from like season three...

Fiji Airways was amazing, will definately be lfying them again. The "Fijian hospitality" is not a catch phrase, it is genuine. the only things that could be improved is the entertainment. Not a great choice of movies, and the TV shows only have about 5 or so episodes, and often of a random season.

They will look to squeeze every penny they can out of you!! Pick your seat$$...bring luggage$$$$... if they could charge you for the air on the plane they would!!

.very good and as I needed wheelchair assistance all staff excellent.. only suggestion is get rid of those plastic chairs hard to ride in and staff have trouble compared to others. Everything else very good experience. Will use Fiji Air again.

In-flight entertainment options could use a refresh, Consider a tie-up with Spotify for more current music and with IMDB or other service for newer selections/movie ratings.

See previous comments. Didn’t take this flight because my other flight was so delayed. Ending up on two other flights as a result and was more than a day late.

6 hour delay and they didnt try to make up any time during an over 10 hour flight

Very good; seat made ready for bed after meal, a plus since one airline covered the seat at the start.

Entertainment was not good. Seems like liquor should’ve been advertised only beer and wine was even though I saw others getting liquor didn’t realize I could. And the food to me could’ve been a little bit.

Food choices perhaps not the best. Only offered beer and wine, when it appeared other liquor was available. Entertainment wasn’t so good.

Not a comfortable trip, the seats are not good, and they look old.

Lost my luggage and brought someone else luggage to my airport.

Not entirely positive. It’s frustrating that everything is done through the united app. One of our flight attendants on our trip from San Francisco to MSP continually had trouble hearing people so she flipped her hair into people’s faces

I flew United from San Francisco to Auckland. My connecting flight from Auckland to Christchurch was canceled with no explanation. I was finally told the cancellation was due to fog. Even though it was clear when we landed. I am from San Francisco, I know what fog is! And I didn't see any fog. I was told the next available flight was 7 hours later. Unacceptable, they should have had a flight ready to go as soon as it was deemed safe to take off.

Our original flight was cancelled from SFO to AKL on 6/16/25. So we had to stay overnight at a hotel after a 12-hour layover plus 3-hour delay before the cancellation. Then had to fly to LA and then to AKL the following day losing an entire day of our vacation in NZ, that we can never get back.

Two hours was not enough time to transition from the international to domestic terminal. You have to go through customs, a biological hazard check, gather your luggage, take a bus to the domestic terminal and recheck your luggage. The bus was slow and crowded and the lines to recheck your bags were very long. We missed our connecting flight. Initially, the Air New Zealand officials were not helpful at all in helping to get us on another flight. Told us we would have to buy another ticket for a flight 11 hours later. Found another agent that was more helpful. He helped arrange to get us on standby for another flight three hours later. Had to ride in jump seats next to the flight attendants, but at least we eventually got to out destination.

Full flight. Flight attendants were harried. Otherwise, fine for the typical cramped seating conditions in coach.

Great! Flight was delayed by 30 mins but all was great. Thanks.

The 10hr flight was a comfortable as it could be in row 57. The food was just very bad….bland and soggy!

The business class upgrade meant a good sleep on the way home after a long week away. Excellent service, great food, and comfortable seat/bed for the journey.

Everything you need to know for your flight from San Francisco to Tonga

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