The cheapest times to fly from DCA to TBU are

  • January 29th to May 20th (except the week of March 5th)
  • August 6th to October 7th

based on data collected exclusively by Champion Traveler across tens of millions of flights. Among all the dates above, the very cheapest time to fly from DCA to TBU is early September. Prices can be as high as $6101 for Friday flights during mid December, or as low as $1413 for Tuesday flights around early September.


When to Fly to Nuku’alofa

Flying from Washington, DC (DCA) to Tonga Tapu (TBU) will usually cost between $1483 to $3047 per person if booking more than four weeks in advance. On average the very cheapest time to fly is early September with an average ticket price of $1635. Due to high demand the most expensive time to fly is mid December, with an average price of $3119. Planning your trip to low-cost times can easily save you $1484 on economy flights and even more on first-class flights. Generally, any price below $1967 can be considered a good price for a round-trip DCA to TBU flight.

See below for a graph of average weekly prices for the DCA to TBU route. All prices are for round-trip tickets in USD.

DCA to TBU Flight Prices

Compared to other flights, the DCA to TBU flight is more expensive than the average and costs more than the average flight leaving from Washington. The average price per mile (for a direct flight) is $0.16, which is far below average.


Flight Prices by Day of the Week

Tuesday is usually the cheapest day to depart and return on this flight. Fridays are the most expensive days to fly out or take a return trip. Selecting flights on the least expensive days could save you up to $510 (20%) on this flight.

Departing prices are for round-trip flights returning on the day of departure. For example, a flight departing on Tuesday and returning a week later will cost an average of $1821. Return trip prices are from the TBU to DCA flight, and often highlight the quality of our data in showing the same trend.

Departing Prices by Day

Departure Day Prices

Return Trip Prices by Day

Return Day Prices


Nonstop Flights and Layovers

Travelers looking to fly from DCA to TBU can generally find a 2-layover flight. Because there is not usually a direct flight option the real-world direct flight time of 14 hour 34 minutes may not be realistic.


Flight Hacking DCA to TBU

Flight hacking is when you book two tickets instead of a layover, sometimes with different airlines. You will need to either bring only a carry-on bag (highly recommended) or leave yourself plenty of time to go through security again. Flight hacking is completely allowed, but airlines don’t always tell you the cheapest way to get from DCA to TBU — but Champion Traveler does!

Hack #1: Los Angeles, CA (DCA > LAX > TBU)

  • Price for both tickets: $1695
  • Average savings: $272 (13.83%)

See DCA to LAX flights

Hack #2: Auckland (DCA > AKL > TBU)

  • Price for both tickets: $1754
  • Average savings: $214 (10.85%)

See DCA to AKL flights

Hack #3: Nadi (DCA > NAN > TBU)

  • Price for both tickets: $1787
  • Average savings: $181 (9.18%)

See DCA to NAN flights


Flight Questions Answered

Still have questions about flying from DCA to TBU? We’ve got answers.

Which airlines fly this route?

You can find 8 major airlines flying this route most often: Air New Zealand, American, Delta, Fiji Airways, Qantas, Singapore Airlines, United, Virgin Australia, and potentially more during busy seasons.

How far away is it from Fua Amotu International Airport to Ronald Reagan Washington National Airport?

The distance between the two airports is roughly 7547 miles or 12146 kilometers.

How long does it take to fly from DCA to TBU?

The real-world flight time for a nonstop DCA to TBU flight is about 14 hour 34 minutes.

How many flights go between Washington, DC and Tonga Tapu?

It depends on the day of the week and the date, but a typical day might have around 6 available flights from DCA to TBU.


Airport Location Info


Departing Airport

Origination code DCA
Origination airport name Ronald Reagan Washington National Airport
City Washington, DC
Country the United States
Latitude 38.9
Longitude -77

Return Airport

Destination code TBU
Destination airport name Fua Amotu International Airport
City Tonga Tapu
Country Tonga
Latitude -21.2
Longitude -175.1


Other Resources

Please note that while we’ve worked hard to analyzed tens of millions of flights to get you this data, we do not calculate current live prices or guarantee pricing. Please see our partners using the links above for current offers.