The cheapest times to fly from IAD to ZOS are

  • January 8th to January 21st
  • July 30th to September 2nd
  • September 24th to December 2nd

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 IAD to ZOS is early October. Prices can be as high as $2409 for Saturday flights during late December, or as low as $1034 for Wednesday flights around early October.


When to Fly to Osorno

Flying from Washington, DC (IAD) to Osorno (ZOS) will usually cost between $1054 to $1841 per person if booking more than four weeks in advance. On average the very cheapest time to fly is early October with an average ticket price of $1042. Due to high demand the most expensive time to fly is late December, with an average price of $1829. Planning your trip to low-cost times can easily save you $787 on economy flights and even more on first-class flights. Generally, any price below $1189 can be considered a good price for a round-trip IAD to ZOS flight.

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

IAD to ZOS Flight Prices

Compared to other flights, the IAD to ZOS flight is slightly more expensive than the average and costs about as much as the average flight leaving from Washington. The average price per mile (for a direct flight) is $0.13, which is far below average.


Flight Prices by Day of the Week

Wednesday is usually the cheapest day to depart and return on this flight. Saturdays 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 $299 (21%) on this flight.

Departing prices are for round-trip flights returning on the day of departure. For example, a flight departing on Wednesday and returning a week later will cost an average of $1185. Return trip prices are from the ZOS to IAD 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 IAD to ZOS can generally find a 2-layover flight. Because there is not usually a direct flight option the real-world direct flight time of 10 hour 53 minutes may not be realistic.


Flight Hacking IAD to ZOS

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 IAD to ZOS — but Champion Traveler does!

Hack #1: Santiago (IAD > SCL > ZOS)

  • Price for both tickets: $1068
  • Average savings: $121 (10.14%)

See IAD to SCL flights


Flight Questions Answered

Still have questions about flying from IAD to ZOS? We’ve got answers.

Which airlines fly this route?

You can find 7 major airlines flying this route most often: Air Canada, American, Avianca, COPA, Delta, LATAM, United, and potentially more during busy seasons.

How far away is it from Canal Bajo Carlos Hott Siebert Airport to Washington Dulles International Airport?

The distance between the two airports is roughly 5503 miles or 8856 kilometers.

How long does it take to fly from IAD to ZOS?

The real-world flight time for a nonstop IAD to ZOS flight is about 10 hour 53 minutes.

How many flights go between Washington, DC and Osorno?

It depends on the day of the week and the date, but a typical day might have around 29 available flights from IAD to ZOS.


Airport Location Info


Departing Airport

Origination codeIAD
Origination airport nameWashington Dulles International Airport
CityWashington, DC
Countrythe United States

Return Airport

Destination codeZOS
Destination airport nameCanal Bajo Carlos Hott Siebert Airport


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.