The cheapest times to fly from ZYL to IAD are

  • October 8th to October 28th
  • December 3rd to February 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 ZYL to IAD is mid November. Prices can be as high as $13500 for Monday flights during late November to early December, or as low as $5327 for Wednesday flights around mid November.


When to Fly to Washington

Flying from Sylhet (ZYL) to Washington, DC (IAD) will usually cost between $5508 to $13500 per person if booking more than four weeks in advance. On average the very cheapest time to fly is mid November with an average ticket price of $5508. Due to high demand the most expensive time to fly is late November to early December, with an average price of $13500. Planning your trip to low-cost times can easily save you $7992 on economy flights and even more on first-class flights. Generally, any price below $10700 can be considered a good price for a round-trip ZYL to IAD flight.

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

ZYL to IAD Flight Prices

Compared to other flights, the ZYL to IAD flight is more expensive than the average and costs more than the average flight leaving from Sylhet. The average price per mile (for a direct flight) is $0.83, which is above average.


Flight Prices by Day of the Week

Wednesday is usually the cheapest day to fly to IAD, and Monday the cheapest day to fly back into ZYL. Mondays are the most expensive days to fly to Washington, and Wednesdays are the most expensive days to return to Sylhet. Selecting flights on the least expensive days could save you up to $4615 (34%) 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 $5795. Return trip prices are from the IAD to ZYL 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 ZYL to IAD can generally find a 1-layover flight. Because there is not usually a direct flight option the real-world direct flight time of 15 hour 19 minutes may not be realistic.


Flight Hacking ZYL to IAD

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 ZYL to IAD — but Champion Traveler does!

Hack #1: Dhaka (ZYL > DAC > IAD)

  • Price for both tickets: $1448
  • Average savings: $9253 (86.47%)

See ZYL to LHR flights

Hack #2: London (ZYL > LHR > IAD)

  • Price for both tickets: $1507
  • Average savings: $9193 (85.92%)

See ZYL to DAC flights

Hack #3: Dubai (ZYL > DXB > IAD)

  • Price for both tickets: $1778
  • Average savings: $8922 (83.38%)

See ZYL to DXB flights


Flight Questions Answered

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

Which airlines fly this route?

You can find 12 major airlines flying this route most often: Air Canada, Air India, Avianca, Biman, Cathay Pacific, Delta, Etihad, MEA, Royal Brunei, Saudia, Turkish Airlines, United, and potentially more during busy seasons.

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

The distance between the two airports is roughly 7966 miles or 12820 kilometers.

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

The real-world flight time for a nonstop ZYL to IAD flight is about 15 hour 19 minutes.

How many flights go between Sylhet and Washington, DC?

It depends on the day of the week and the date, but a typical day might have around 2 available flights from ZYL to IAD.


Airport Location Info


Departing Airport

Origination codeZYL
Origination airport nameSavannakhet Airport

Return Airport

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


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.