$609 Find Cheap Flights from San Francisco to Tonga - Compare and Save

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1 adult, Economy, 0 bags

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Price, demand and travel trends for San Francisco to Tonga flights

Use KAYAK data on prices, travel dates, airlines and seasonal trends to compare options and book flights with more confidence.

Are flights from San Francisco to Tonga cheaper or more expensive than last year?

Fares from San Francisco to Tonga are running about 14% lower than they were around this time last year, averaging $1,307 round-trip.

What are the cheapest fares from San Francisco to Tonga right now?

The cheapest fares from San Francisco to Tonga on KAYAK in the last week were to Nuku‘alofa Fua'Amotu Intl (TBU) from $1,047 round-trip, and to Vava'u Lupepau'U (VAV) from $2,530 round-trip.

What’s the cheapest month to fly from San Francisco to Tonga?

April is the cheapest time of year to fly, with average fares of $986. Prices are highest in September, when average flight costs increase to around $1,449.

When is the best time to book flights from San Francisco to Tonga?

Book your flights 3 weeks before your trip. KAYAK data collected over the past 12 months shows that booking in this window can save you around 28% compared to booking last-minute (within 2 weeks of departure).

Which airport in Tonga is the cheapest to fly to from San Francisco?

Based on KAYAK data from the past 12 months, the cheapest airports to fly into Tonga are:

• Nuku‘alofa Fua'Amotu Intl (TBU) (avg. price $1,298)
• Vava'u Lupepau'U (VAV) (avg. price $1,604)

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

Monday tends to be the cheapest day to fly from San Francisco to Tonga, while Tuesday is the most expensive. Fares run about 19% higher that day, based on the past 12 months of KAYAK data.

What's the cheapest time of day to fly from San Francisco to Tonga?

Data from the past 12 months shows it's cheapest to fly to Tonga during the morning with average prices of $1,278. The evening is the most expensive time to fly, with average prices of $1,327.

Key details for San Francisco to Tonga flights

Low season

October

Cheapest flight

$609
Beat the crowds with an average 65% drop in travelers.
The most popular month to fly with an average 97% increase in travelers.
One-way flight from San Francisco to Nuku‘alofa

Your San Francisco to Tonga flight questions, answered

Find helpful answers about this route, including flight times, airports, airlines and booking tips.

  • Is now a good time to book a flight from San Francisco to Tonga?

    Yes. Fares from San Francisco to Tonga are low right now. As a rule of thumb, a round-trip under $1,206 (cheaper than most fares this year) is a good deal, so if you spot one at or below that, it's a good time to book.

  • How much should I budget for a flight from San Francisco to Tonga?

    Over the past 12 months, round-trip fares from San Francisco to Tonga have ranged from $1,206 to $1,673.

  • What are the main airports serving Tonga?

    Flights to Tonga use two main airports, Vava'u Lupepau'U (VAV) and Nuku‘alofa Fua'Amotu Intl (TBU).

  • What airlines fly nonstop from San Francisco to Tonga?

    Based on the flight schedule for the next 3 months, no airline regularly operates nonstop flights from San Francisco to Tonga. However, Fiji Airways offers a one-stop option.

  • Which cabin classes are available on flights from San Francisco to Tonga?

    On flights from San Francisco to Tonga you can book Economy Class or Business Class.

Your guide to booking San Francisco to Tonga flights

Get tips on when to book, when to fly and what to know before your trip.
  • If you can plan ahead, the sweet spot for booking your flight is 3 weeks before your trip. KAYAK data shows fares in this window are around 28% lower than last-minute bookings (made within 2 weeks of departure). Not ready to commit? Set a Price Alert and we'll let you know when prices change.
  • If your travel dates are flexible, book your trip for April when flights are typically cheapest and avoid June when prices are at their highest.
  • Flying on Monday is usually the cheapest. Flights on Tuesday cost about 19% more on average, so being flexible with your travel dates could help you save.
  • If you're looking to save, Nuku‘alofa Fua'Amotu Intl (TBU) is the cheapest airport to fly into from San Francisco. If you have onward travel, don't forget to factor in the cost of your journey by train, bus or domestic flight.
  • Start your trip in Nuku‘alofa, which is the most popular destination in Tonga. From there, it's easy to continue on to other popular destinations such as Utungake, Vava'u and Neiafu.

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 261 reviews
7.4Entertainment
8.5Crew
7.5Food
8.0Comfort
8.0Boarding
Airline reviews

Very friendly cabin crew and great comfortable in-flight experience. Check-in experience at SFO can improve if a separate web check-in/bag drop line can be added.

10.0 ExcellentAnonymous, Aug 2026
Read more Fiji Airways reviews

Very friendly cabin crew and great comfortable in-flight experience. Check-in experience at SFO can improve if a separate web check-in/bag drop line can be added.

The only thing plus on this flight was the crew. They made me feel welcome and took care of me on the flights. The biggest issue is that business class always boards first on all airlines. There needs to be separate doors for business and premium class to enter. I had to wait over 40 minutes for economy to be boarded. I didn’t pay 5000 dollars to wait. The other issue not enough food choices , no sandwiches or snacks in between - what the hell. I would never travel this airline again.

Boarding had poor communication. Passengers didn't get clear directions to prepare for Boarding. The plane was an older model which had some issues with operating the seats (the staff was great). Due to age the seat cushions were compressed and less comfortable than expected.

Fiji Airways always goes above and beyond. If anything I'd say the food was less enjoyable than in the past. But that in no way lessened the experience with the cabin crew or the excellent attentiveness and service they provided throughout the entire trip!

Everything was great . Arrived on time was smooth plane was clean. Crew/Staff was friendly and helpful.

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.

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

The experience on Fiji Airways was absolutely amazing. Streamlined. All staff was amazing. Pleasant. Friendly. Extremely helpful.

The experience was lovely in every respect. The crews were delightful.

Wider seats would be nice. Love the wine selection. Crew is superb. Need more movie / TV selections.

Great airline service by the staff. I highly recommend it

This flight was the second leg of a trip that began in Auckland, New Zealand. I was unable to find a way to select seats in advance. The boarding passes we were given in Auckland did not have seat assignments for the second flight. There was no way to check on it until personnel showed up at the gate in Los Angeles, immediately before boarding time. The flight was overbooked by one, and since I was traveling with my sister, we needed two seats. We waited in considerable anxiety for everyone else to board and when one person did not show up, we had to take whatever was left. At least we finally got on the flight although we were the very last to board. We were not able to sit together, of course.

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.

Overall the plane was good and the crew great. The big disappointment was the skycouch. Maybe it would be good if you were a parent with 2 small kids travelling but as a couple it's hopeless. It's impossible for 2 adults to lie down so one ends up sitting. We split our time with one lying and the other sitting. We both got more sleep sitting upright. We will never book one again and don't recommend it to anyone.

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

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.

Everything very good except the sofa couch not as comfortable as expected.

New Zealand crew were attentive. We were not informed that we needed transit document to pass through New Zealand. A checkin employee helped with this for which we were thankful.

There was a snafu with confirming seats at check which left us in limbo for the second leg of our trip. I believe the ANZ app is not well integrated with the systems at the terminal resulting in this disconcerting error.

The pilot tried to make up for lost time due to delays that were out of her control. She communicated the issues openly and clearly and made every effort to do what she could to alleviate issues.

More options for your flight from San Francisco to Tonga

Complete your trip to Tonga with a hotel stay or car rental