$667 Find Cheap Flights from San Francisco to Tonga

This is the cheapest round-trip flight price found by a KAYAK user in the last 72 hours by searching for a flight from San Francisco to Tonga departing on 1/22. 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, 0 bags

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Flight Deals

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

Thu, Jan 22 - Sat, Jan 31
Multiple Airlines Logo
7:00 pm - 3:00 pm
SFO
-
TBU
23h 00m2 stops
Multiple Airlines Logo
4:00 pm - 6:30 pm
TBU
-
SFO
23h 30m2 stops
$1,130Multiple Airlines
Tue, Jan 13 - Tue, Jan 20
Fiji Airways Logo
4:30 pm - 1:50 am
SFO
-
TBU
36h 20m2 stops
Fiji Airways Logo
5:00 am - 8:10 pm
TBU
-
SFO
36h 10m2 stops
$1,150Fiji Airways
Sun, Jan 4 - Tue, Jan 20
Fiji Airways Logo
10:05 pm - 1:50 am
SFO
-
TBU
30h 45m1 stop
Fiji Airways Logo
5:00 am - 8:10 pm
TBU
-
SFO
36h 10m2 stops
$1,184Fiji Airways
Tue, Jan 13 - Tue, Jan 20
Multiple Airlines Logo
4:30 pm - 3:00 pm
SFO
-
TBU
25h 30m2 stops
Multiple Airlines Logo
9:35 pm - 7:05 am
TBU
-
SFO
30h 30m1 stop
$1,205Multiple Airlines
Sun, Dec 28 - Fri, Jan 23
Fiji Airways Logo
10:05 pm - 1:50 am
SFO
-
TBU
30h 45m1 stop
Fiji Airways Logo
4:00 pm - 12:25 pm
TBU
-
SFO
17h 25m1 stop
$1,214Fiji Airways
Sun, Dec 28 - Fri, Jan 23
Fiji Airways Logo
10:05 pm - 1:50 am
SFO
-
TBU
30h 45m1 stop
Fiji Airways Logo
4:00 pm - 6:30 pm
TBU
-
SFO
23h 30m2 stops
$1,265Fiji Airways
Sat, Dec 27 - Fri, Jan 23
Fiji Airways Logo
9:45 pm - 1:05 am
SFO
-
TBU
30h 20m1 stop
Fiji Airways Logo
5:40 am - 12:25 pm
TBU
-
SFO
27h 45m1 stop
$1,372Fiji Airways
Sat, Dec 27 - Fri, Jan 23
Fiji Airways Logo
9:45 pm - 1:05 am
SFO
-
TBU
30h 20m1 stop
Fiji Airways Logo
5:40 am - 12:25 pm
TBU
-
SFO
27h 45m1 stop
$1,388Fiji Airways
Sat, Dec 27 - Fri, Jan 23
Fiji Airways Logo
9:45 pm - 1:05 am
SFO
-
TBU
30h 20m1 stop
Fiji Airways Logo
4:00 pm - 6:30 pm
TBU
-
SFO
23h 30m2 stops
$1,424Fiji Airways
Sat, Dec 27 - Fri, Jan 23
Fiji Airways Logo
9:45 pm - 1:05 am
SFO
-
TBU
30h 20m1 stop
Fiji Airways Logo
5:40 am - 6:30 pm
TBU
-
SFO
33h 50m2 stops
$1,440Fiji Airways
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 February, when tickets cost $1,013 (return) on average. On the other hand, the most expensive months are December and June, when the average cost of round-trip tickets is $1,797 and $1,532 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 7% compared to booking last minute. For the absolute cheapest price, our data suggests you should book 17 weeks before departure.

Good to know

Low seasonJanuary
Cheapest flight$1,130
Best time to beat the crowds with an average 7% drop in price.
Most popular time to fly with an average 38% increase in price.
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.
8.1
Fiji AirwaysOverall score based on 210 reviews
7.5Entertainment
7.5Food
8.5Crew
8.0Comfort
8.2Boarding
Airline reviews

The airline is ok, but it needs to improve it schedules.

6.0 GoodHon, Oct 2025
NAN - SFO
Read more Fiji Airways reviews

The airline is ok, but it needs to improve it schedules.

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.

The food was not as good as Air New Zealand. The veg pasta was pass-able but the veg cibotta sandwich was dry, hard and not up to par. The coach staff were attentive and accommodating.

Air conditioning was turned to the wrong setting. Way too hot. The entertainment system kept resetting and didn’t work half the flight. Said something to the crew. They didn’t do anything to help. Plane had a mechanical problem that resulted in 2.5 hour delay. Boarded the plane, had to disembark and get back on.

Flight was delayed by 2 hours. Got lucky that i had a long connection, else would have certainly missed my connecting flight. Food is just okay, specially the breakfast is worse . Asked for water 30 mins before landing, the response is that we are landing so everything is packed . I guess traveling in economy that’s what we get. Probably business class passengers would get a different answer. Only good thing is that wifi service is available from auckland to lax for most part Next time will try united or American and then compare.

Good and appreciate the effort Air Zealand puts into using more environmentally friendly food containers and utensils. yay! One of the better airlines for this for sure. Still some bad stuff, but at least Air NZ is trying. :) Also really enjoyed the bluetooth option for personal headsets. :)

I was trying to get confirmation on if my luggage was going to be moved to the earlier flight (I requested standby to get home earlier) and was unable to get help from those working at the counter. The request to be moved to an earlier flight was handled smoothly through the app and appreciate the ease of the request.

They are my favourite airline in the world by a million miles.

Do the bumpy weather the whole trip they were very few times when the seatbelt sign wasn't on

Kayak did not propagate my United miles account and I had to manually get credit.

Like: Aircraft was better than others I've flown in. Crew was great, food was very good. Air New Zealand is now my favorite airline. On our long flight from AKL to YVR there was enough room for those of us in Economy to stretch a bit. My sister is disabled and they took very good care of her and me. Best entertainment offering of all the other airlines. Not so much; Flight from AKL to YRV was delayed BUT they recovered really well so no complaints here. Pretty petty point to complain about. Only negative I have. I will recommend to friends.

Nice friendly staff and crew. Love the 787 flight. Get meals and lots of drinks!

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

Information on your arrival and departure airports