The cheapest times to fly from IAD to LTO are

  • January 1st to January 28th
  • April 16th to June 10th (except the weeks of April 30th and May 14th)
  • July 30th to October 7th
  • November 5th to November 18th

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 LTO is early to mid September. Prices can be as high as $1455 for Friday flights during late December, or as low as $546 for Wednesday flights around early to mid September.


When to Fly to Loreto

Flying from Washington, DC (IAD) to Loreto (LTO) will usually cost between $605 to $1163 per person if booking more than four weeks in advance. On average the very cheapest time to fly is early to mid September with an average ticket price of $553. Due to high demand the most expensive time to fly is late December, with an average price of $1192. Planning your trip to low-cost times can easily save you $639 on economy flights and even more on first-class flights. Generally, any price below $781 can be considered a good price for a round-trip IAD to LTO flight.

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

IAD to LTO Flight Prices

Compared to other flights, the IAD to LTO flight is cheaper than the average and costs less than the average flight leaving from Washington. The average price per mile (for a direct flight) is $0.23, which is below average.


Flight Prices by Day of the Week

Wednesday is usually the cheapest day to depart and return on this flight. Fridays are the most expensive days to fly to Loreto, and Saturdays are the most expensive days to return to Washington. Selecting flights on the least expensive days could save you up to $223 (24%) 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 $763. Return trip prices are from the LTO 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 LTO can generally find a 1-layover flight. Because there is not usually a direct flight option the real-world direct flight time of 4 hour 51 minutes may not be realistic.


Alternative Nearby Airports

Champion Traveler tells you which airports are nearby and whether tickets might be cheaper alternative airports nearby. Sometimes it’s worth it to fly into a closer airport and then commute to your destination. Remember that there is not usually a nonstop flight from IAD to LTO while comparing.

Destination alternative #1: Ciudad Obregon International Airport (CEN) in Ciudad Obregon

  • 135 miles (217 km) away from LTO
  • Usually 9.41% less expensive than LTO
  • 2-layover flights available

See IAD to CEN flights

Destination alternative #2: Valle del Fuerte International Airport (LMM) in Los Mochis

  • 143 miles (230 km) away from LTO
  • Usually 7.81% less expensive than LTO
  • 2-layover flights available

See IAD to LMM flights


Flight Hacking IAD to LTO

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 LTO — but Champion Traveler does!

Hack #1: Los Angeles, CA (IAD > LAX > LTO)

  • Price for both tickets: $693
  • Average savings: $88 (11.27%)

See IAD to LAX flights


Flight Questions Answered

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

Which airlines fly this route?

You can find 5 major airlines flying this route most often: Alaska, American, Delta, Singapore Airlines, United, and potentially more during busy seasons.

How far away is it from Loreto International Airport to Washington Dulles International Airport?

The distance between the two airports is roughly 2152 miles or 3463 kilometers.

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

The real-world flight time for a nonstop IAD to LTO flight is about 4 hour 51 minutes.

How many flights go between Washington, DC and Loreto?

It depends on the day of the week and the date, but a typical day might have around 1 available flights from IAD to LTO.


Airport Location Info


Departing Airport

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

Return Airport

Destination codeLTO
Destination airport nameLoreto International 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.