The cheapest times to fly from IAD to SRG are

  • January 8th to January 21st
  • February 5th to March 25th (except the week of February 26th)
  • May 7th to July 15th (except the week of May 21st)
  • October 15th to December 9th

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 SRG is early July. Prices can be as high as $8315 for Saturday flights during early to mid August, or as low as $1435 for Monday flights around early July.


When to Fly to Semarang

Flying from Washington, DC (IAD) to Semarang (SRG) will usually cost between $1608 to $5686 per person if booking more than four weeks in advance. On average the very cheapest time to fly is early July with an average ticket price of $1684. Due to high demand the most expensive time to fly is early to mid August, with an average price of $5772. Planning your trip to low-cost times can easily save you $4088 on economy flights and even more on first-class flights. Generally, any price below $2280 can be considered a good price for a round-trip IAD to SRG flight.

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

IAD to SRG Flight Prices

Compared to other flights, the IAD to SRG 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 $0.14, which is far below average.


Flight Prices by Day of the Week

Monday is usually the cheapest day to fly to SRG, and Tuesday the cheapest day to fly back into IAD. Saturdays are the most expensive days to fly to Semarang, and Wednesdays are the most expensive days to return to Washington. Selecting flights on the least expensive days could save you up to $3019 (52%) on this flight.

Departing prices are for round-trip flights returning on the day of departure. For example, a flight departing on Monday and returning a week later will cost an average of $2032. Return trip prices are from the SRG 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 SRG can generally find a 2-layover flight. Because there is not usually a direct flight option the real-world direct flight time of 19 hour 17 minutes may not be realistic.


Flight Hacking IAD to SRG

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 SRG — but Champion Traveler does!

Hack #1: Singapore (IAD > SIN > SRG)

  • Price for both tickets: $1071
  • Average savings: $1209 (53.04%)

See IAD to SIN flights

Hack #2: Kuala Lumpur (IAD > KUL > SRG)

  • Price for both tickets: $1139
  • Average savings: $1141 (50.03%)

See IAD to KUL flights

Hack #3: Jakarta (IAD > CGK > SRG)

  • Price for both tickets: $1151
  • Average savings: $1129 (49.53%)

See IAD to CGK flights


Flight Questions Answered

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

Which airlines fly this route?

You can find 12 major airlines flying this route most often: ANA, Bangkok Airways, Cathay Pacific, China Airlines, Etihad, Garuda Indonesia, JAL, Lufthansa, Malaysia Airlines, Singapore Airlines, United, Virgin Australia, and potentially more during busy seasons.

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

The distance between the two airports is roughly 10172 miles or 16370 kilometers.

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

The real-world flight time for a nonstop IAD to SRG flight is about 19 hour 17 minutes.

How many flights go between Washington, DC and Semarang?

It depends on the day of the week and the date, but a typical day might have around 7 available flights from IAD to SRG.


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 SRG
Destination airport name Ahmad Yani Airport
City Semarang
Country Indonesia
Latitude -7
Longitude 110.4


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.