$492 Cheap Flights from Washington (DCA) to Iasi (IAS)

View $492 flight on Tue, Sep 9, 2025Opens in a new window

Popular airlines from Ronald Reagan Washington National Airport (DCA) to Iasi (IAS)

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Cheap Flights from Washington to Iasi (DCA-IAS)

Prices were available within the past 7 days and start at $492 for one-way flights and $712 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Air Canada
Mon, Sep 8 - Wed, Sep 17
DCA
Washington
IAS
Iasi
$712 Roundtrip, found 4 days ago
$712
Roundtrip
found 4 days ago
Select Air Canada flight, departing Mon, Sep 8 from Washington to Iasi, returning Wed, Sep 17, priced at $712 found 4 days ago
Air Canada
Mon, Aug 25 - Fri, Dec 26
DCA
Washington
IAS
Iasi
$763 Roundtrip, found 1 day ago
$763
Roundtrip
found 1 day ago
Select Air Canada flight, departing Mon, Aug 25 from Washington to Iasi, returning Fri, Dec 26, priced at $763 found 1 day ago
United
Mon, Aug 25 - Fri, Dec 26
DCA
Washington
IAS
Iasi
$767 Roundtrip, found 3 days ago
$767
Roundtrip
found 3 days ago
Select United flight, departing Mon, Aug 25 from Washington to Iasi, returning Fri, Dec 26, priced at $767 found 3 days ago
United
Mon, Aug 25 - Fri, Dec 26
DCA
Washington
IAS
Iasi
$772 Roundtrip, found 3 days ago
$772
Roundtrip
found 3 days ago
Select United flight, departing Mon, Aug 25 from Washington to Iasi, returning Fri, Dec 26, priced at $772 found 3 days ago
United
Mon, Aug 25 - Fri, Dec 26
DCA
Washington
IAS
Iasi
$774 Roundtrip, found 3 days ago
$774
Roundtrip
found 3 days ago
Select United flight, departing Mon, Aug 25 from Washington to Iasi, returning Fri, Dec 26, priced at $774 found 3 days ago
United
Mon, Aug 25 - Fri, Dec 26
DCA
Washington
IAS
Iasi
$778 Roundtrip, found 3 days ago
$778
Roundtrip
found 3 days ago
Select United flight, departing Mon, Aug 25 from Washington to Iasi, returning Fri, Dec 26, priced at $778 found 3 days ago
United
Mon, Aug 25 - Fri, Dec 26
DCA
Washington
IAS
Iasi
$779 Roundtrip, found 3 days ago
$779
Roundtrip
found 3 days ago
Select United flight, departing Mon, Aug 25 from Washington to Iasi, returning Fri, Dec 26, priced at $779 found 3 days ago
Air Canada
Mon, Aug 25 - Fri, Dec 26
DCA
Washington
IAS
Iasi
$782 Roundtrip, found 5 days ago
$782
Roundtrip
found 5 days ago
Select Air Canada flight, departing Mon, Aug 25 from Washington to Iasi, returning Fri, Dec 26, priced at $782 found 5 days ago
United
Mon, Aug 25 - Fri, Dec 26
DCA
Washington
IAS
Iasi
$787 Roundtrip, found 6 days ago
$787
Roundtrip
found 6 days ago
Select United flight, departing Mon, Aug 25 from Washington to Iasi, returning Fri, Dec 26, priced at $787 found 6 days ago
United
Mon, Aug 25 - Fri, Dec 26
DCA
Washington
IAS
Iasi
$787 Roundtrip, found 4 days ago
$787
Roundtrip
found 4 days ago
Select United flight, departing Mon, Aug 25 from Washington to Iasi, returning Fri, Dec 26, priced at $787 found 4 days ago
Flights from Washington (DCA) to Iasi (IAS)
Origin airport
Ronald Reagan Washington National
Destination airport
Iasi
Roundtrip price
$712
Distance
4903 mi

Washington to Iasi Flights

The cheapest times to fly from Washington to Iasi

On average, Thursday can be the cheapest time to fly, according to data from the Airlines Reporting Corporation (ARC), one of the world's biggest databases for global airline sales. The data reveals that you could save up to 16% by flying on a Thursday—the cheapest day to travel on average—instead of a Sunday—the most expensive. Some of the most affordable flights from Washington to Iasi are during the month of September. You can find some of the cheapest flights from Washington to Iasi with Expedia's search tool and vast selection of airlines.

 

The best time to book a flight from Washington to Iasi

Sunday is one of the best days to book for cheap flights from Washington to Iasi: Tickets reserved on a Sunday cost between 6% and 13% less than those reserved on a Friday, according to ARC data. The data also suggests booking early can also lead to cheaper airfares. You could save 24% by buying your tickets for domestic flights at least a month in advance and 10% by booking international flights 2 months in advance.

 

How to find cheap round-trip tickets from Washington to Iasi

Being flexible with your dates and using Expedia's Price Drop Protection and Price Tracking features are some of the best ways of finding a cheap ticket from Washington to Iasi in 2025. You can also book with separate airlines for your outbound and return journeys, from $492 one-way. Expedia also offers Price Drop Protection, so if the cost of your airfare goes down after booking, you'll receive a credit for the difference*. This is available for a small fee, and is free to One Key Gold and Platinum tier members.

 

Expedia's Price Tracking feature means you can stay on top of airfares without manually checking every day. It sends you automated price alerts for cheap Washington to Iasi flights and uses historical data to indicate when the best time to book is. Download Expedia's free app to activate this handy tool in a few easy taps.

 

You could also save big by booking one of Expedia's vacation packages. Bundling together your Washington to Iasi airfare with your accommodations and car rental is often cheaper than booking everything separately. There’s also One Key, Expedia's generous rewards program. Join for free and you could earn One Key cash on most bookings to save on future adventures.

 

*Terms apply.

 

Disclaimer: ARC The statistics are based on average round-trip ticket prices between January and August 2023. The percentages you see are averages.

 

Frequently asked questions

How much does a flight from Ronald Reagan Washington National Airport (DCA) to Iasi Airport (IAS) cost?
Discover the latest flight deals from DCA to IAS by entering your preferred travel dates and searching on Expedia. Easily compare prices by departure date if you have flexibility with your schedule and use handy filters to explore prices for your preferred journey. As a member of One Key™, our free loyalty program, you can use Price Tracking to watch fares and receive notifications if prices go up or down.
What is the cheapest month to fly from DCA to IAS?
The cheapest flights from DCA to IAS are usually during off-peak season, when demand is lower. To save money, avoid flying during public holidays, school breaks and major local events.
What is the cheapest airline that flies from DCA to IAS?
Use the filter tool on Expedia to compare airlines and find the cheapest carrier that'll take you from DCA to IAS. Sort your results by "Price (lowest to highest)" to snap up a great deal.
How many flights per day from Ronald Reagan Washington National Airport (DCA) to Iasi Airport (IAS)?
You'll have to take a flight with a layover if you're traveling from Ronald Reagan Washington National Airport (DCA) to Iasi Airport (IAS). There are no daily direct flights on this route. However, just filter your search to include one or two stops to find an option that works for you.
What day of the week has the most flights from DCA to IAS?
Friday is generally the busiest day for flights, while Tuesday tends to be the quietest.* Remember that flight schedules can vary depending on a number of factors, including the time of year and airline.*Busiest/quietest day to travel is based on Expedia flight demand through January to December 2024.
What is the best time to fly from Ronald Reagan Washington National Airport (DCA) to Iasi Airport (IAS)?
To touch down at Iasi Airport (IAS) on schedule, opt for a flight that leaves Ronald Reagan Washington National Airport (DCA) before 3 PM. The chance of cancellations is 22% higher, on average, for departures after this time.**Most reliable time of the day and month to travel recommendation is based on January through August 2024 flight status data sourced from OAG's global flight data platform.
Is it cheaper to buy a plane ticket from Ronald Reagan Washington National Airport (DCA) to Iasi Airport (IAS) last-minute?
Waiting until just before your trip to book a ticket from DCA to IAS generally means paying more. While it's possible to find some last-minute deals, they aren't always guaranteed. Keep your travel schedule open to maximize your chances of scoring a bargain.
Is it cheaper to book a DCA to IAS flight and hotel package?
Booking a DCA to IAS flight and hotel package is typically cheaper than booking separately. With Expedia, you can enjoy the convenience of organizing your travels all in one place. Pick from our impressive range of stays and then add activities, car rentals and flights to your booking. Bundle it all together, and you could save hundreds of dollars.
Can I cancel or change the date of my flight from Ronald Reagan Washington National Airport (DCA) to Iasi Airport (IAS)?
In most cases, you're able to reschedule or cancel your DCA to IAS flight. However, additional fees may apply, especially if you made your booking more than 24 hours ago. Double-check your itinerary for the airline's guidelines and fees on flight changes, or if you'd like more information, visit our Customer Service portal.

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*Available to One Key members.