The cheapest times to fly from IAD to TAP are

  • January 8th to March 4th
  • April 16th to May 13th
  • August 20th to November 18th (except the week of October 29th)

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 TAP is early to mid September. Prices can be as high as $1380 for Sunday flights during mid December, or as low as $562 for Tuesday flights around early to mid September.


When to Fly to Tapachula

Flying from Washington, DC (IAD) to Tapachula (TAP) will usually cost between $568 to $865 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 $592. Due to high demand the most expensive time to fly is mid December, with an average price of $1083. Planning your trip to low-cost times can easily save you $491 on economy flights and even more on first-class flights. Generally, any price below $638 can be considered a good price for a round-trip IAD to TAP flight.

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

IAD to TAP Flight Prices

Compared to other flights, the IAD to TAP 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 $0.21, which is below average.


Flight Prices by Day of the Week

Tuesday is usually the cheapest day to fly to TAP, and Wednesday the cheapest day to fly back into IAD. Sundays 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 $67 (9%) 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 $643. Return trip prices are from the TAP 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 TAP can generally find a 2-layover flight. Because there is not usually a direct flight option the real-world direct flight time of 4 hour 24 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 TAP while comparing.

Destination alternative #1: La Aurora International Airport (GUA) in Guatemala City

  • 124 miles (200 km) away from TAP
  • Usually 17.02% less expensive than TAP
  • Nonstop flights available

See IAD to GUA flights

Destination alternative #2: Angel Albino Corzo International Airport (TGZ) in Tuxtla Gutierrez

  • 130 miles (209 km) away from TAP
  • Usually 5.96% less expensive than TAP
  • 2-layover flights available

See IAD to TGZ flights


Flight Hacking IAD to TAP

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 TAP — but Champion Traveler does!

Hack #1: Guadalajara (IAD > GDL > TAP)

  • Price for both tickets: $554
  • Average savings: $84 (13.1%)

See IAD to GDL flights

Hack #2: Mexico City (IAD > MEX > TAP)

  • Price for both tickets: $588
  • Average savings: $50 (7.76%)

See IAD to MEX flights


Flight Questions Answered

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

Which airlines fly this route?

You can find 3 major airlines flying this route most often: Aeromexico, COPA, Delta, and potentially more during busy seasons.

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

The distance between the two airports is roughly 1899 miles or 3056 kilometers.

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

The real-world flight time for a nonstop IAD to TAP flight is about 4 hour 24 minutes.

How many flights go between Washington, DC and Tapachula?

It depends on the day of the week and the date, but a typical day might have around 14 available flights from IAD to TAP.


Airport Location Info


Departing Airport

Origination code IAD
Origination airport name Washington Dulles International Airport
City Washington, DC
Country the United States
Latitude 38.9
Longitude -77.5

Return Airport

Destination code TAP
Destination airport name Tapachula International Airport
City Tapachula
Country Mexico
Latitude 14.8
Longitude -92.4


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.