HomeSearch by dateVacation packagesHotelsFlight dealsCar rentalTravel tips & news
Otopeni Intl

$301+ Cheap flights from Dulles Intl (IAD) to Otopeni Intl (OTP)

This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 8/12. Fares are subject to change and may not be available on all flights or dates of travel.
IAD — OTP
May 4 — May 111
Sun 5/4
Sun 5/11
1 adult, Economy
We work with more than 300 partners to bring you better travel deals

Find cheap flights from Dulles Intl to Otopeni Intl with Cheapflights

1. Tell us where you want to go

Enter your travel information like dates, passengers, trip type (one-way or round trip), and preferred cabin class then click “Find deals”

2. Select your favorite providers

We find the providers serving your travel needs. Choose up to four travel providers to compare side-by-side for flights, hotels, or car rentals.

3. Compare prices and book

Review each provider’s pricing and select the best option for you! Book through your favorite provider’s website for a seamless experience.

Cheapflights Tip: The best prices from Washington, D.C. Dulles Intl to Bucharest Otopeni Intl are usually found in January or October, booked 84 days in advance, depart on a Tuesday or Sunday and return on a Thursday

Cheap flight deals from Dulles Intl to Otopeni Intl

Discover tips and strategies to find the most affordable flight options for your journey from Dulles Intl (IAD) to Otopeni Intl (OTP). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated April 29, 2025.

Most accurate provider

AranGrant
3 stars

Most trusted provider

AranGrant
3 stars

Round-trip from

$641
(FlightHub)

One-way from

$301
(Kiwi.com)

Popular in

June

Cheapest in

January

Average price

$824
Provider with most accurate pricing for Washington, D.C. Dulles Intl-Bucharest Otopeni Intl flight deals.
Search Deals
Provider most trusted by Cheapflights users for Washington, D.C. Dulles Intl-Bucharest Otopeni Intl flights.
Search Deals
From Washington, D.C. Dulles Intl to Bucharest Otopeni Intl
Search Deals
One-way flight from Washington, D.C. Dulles Intl to Bucharest Otopeni Intl
Search Deals
Highest demand for flights based on searches. 23% potential increase in price ($244 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 3% potential price decrease ($30 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in April 2025
Search Deals

Find flight deals from Dulles Intl to Otopeni Intl

Cheapest flights from Dulles Intl to Otopeni Intl
Explore the most affordable flight options available from Dulles Intl to Otopeni Intl. Find the lowest fares from popular airlines and budget airlines, with prices last updated on April 29, 2025.

This American Airlines deal was found by Cheapflights users on 4/28. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 10/287:15 pmIAD - OTP
1 stop21h 50mAmerican Airlines
Tue 11/118:05 amOTP - IAD
1 stop14h 30mAmerican Airlines
Deal found 4/28$639
This Booking.com deal was found by Cheapflights users on 4/28. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 10/289:45 pmIAD - OTP
1 stop20h 45mMultiple Airlines
Tue 11/115:55 amOTP - IAD
2 stops22h 10mMultiple Airlines
Deal found 4/28$641
This FlightHub deal was found by Cheapflights users on 4/27. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 8/2510:05 pmIAD - OTP
2 stops36h 15mScandinavian Airlines
Mon 9/89:50 pmOTP - IAD
1 stop29h 09mScandinavian Airlines
Deal found 4/27$649
This oojo deal was found by Cheapflights users on 4/27. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 8/61:30 pmIAD - OTP
1 stop23h 55mTurkish Airlines
Wed 9/109:30 amOTP - IAD
1 stop17h 15mTurkish Airlines
Deal found 4/27$651
This Booking.com deal was found by Cheapflights users on 4/27. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 10/272:06 pmIAD - OTP
2 stops26h 49mBritish Airways
Mon 11/104:00 pmOTP - IAD
2 stops34h 31mBritish Airways
Deal found 4/27$656
This Booking.com deal was found by Cheapflights users on 4/27. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/249:45 amIAD - OTP
2 stops22h 35mAir Canada
Fri 11/75:55 amOTP - IAD
2 stops20h 44mAir Canada
Deal found 4/27$691
This United Airlines deal was found by Cheapflights users on 4/28. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 10/2510:18 pmIAD - OTP
2 stops38h 12mUnited Airlines
Sat 11/85:55 amOTP - IAD
2 stops20h 44mUnited Airlines
Deal found 4/28$709
This Lufthansa deal was found by Cheapflights users on 4/28. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Lufthansa is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 7/3010:20 pmIAD - OTP
1 stop13h 15mLufthansa
Wed 8/136:05 amOTP - IAD
1 stop20h 20mLufthansa
Deal found 4/28$722
This Delta deal was found by Cheapflights users on 4/28. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 8/69:40 amIAD - OTP
2 stops19h 30mDelta
Wed 9/107:00 amOTP - IAD
2 stops17h 56mDelta
Deal found 4/28$752
This SWISS deal was found by Cheapflights users on 4/27. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure SWISS is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 7/238:45 pmIAD - OTP
1 stop21h 35mSWISS
Thu 7/314:10 pmOTP - IAD
1 stop31h 05mSWISS
Deal found 4/27$788
This Gurufare deal was found by Cheapflights users on 4/28. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Gurufare is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 7/124:30 pmIAD - OTP
1 stop16h 35mITA Airways
Sun 7/2010:50 amOTP - IAD
1 stop34h 50mITA Airways
Deal found 4/28$853

Cheapflights Fare Finder

Customize your flight search to find flights from Dulles Intl to Otopeni Intl that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated April 29, 2025.
Use the filters below to find and compare flights from Washington, D.C. Dulles Intl Airport to Bucharest Otopeni Intl Airport that are best for you.

Fly from

Dulles Intl

Fly to

Otopeni Intl

Route

Depart

Return

Price

Washington, D.C.Bucharest

IAD - OTP

IADOTP

Washington, D.C. Dulles Intl

Wed 8/6

9:40 pm-8:10 am

1 stop27h 30m

Bucharest Otopeni Intl

Wed 9/10

3:55 pm-11:45 am

1 stop26h 50m

$641

Washington, D.C.Bucharest

IAD - OTP

IADOTP

Washington, D.C. Dulles Intl

Mon 8/25

10:05 pm-5:20 pm

2 stops36h 15m

Bucharest Otopeni Intl

Mon 9/8

9:50 pm-7:59 pm

1 stop29h 09m

$649

Washington, D.C.Bucharest

IAD - OTP

IADOTP

Washington, D.C. Dulles Intl

Thu 9/25

5:50 pm-12:50 am

2 stops24h 00m

Bucharest Otopeni Intl

Thu 10/9

7:35 pm-3:20 pm

2 stops26h 45m

$665

Washington, D.C.Bucharest

IAD - OTP

IADOTP

Washington, D.C. Dulles Intl

Sat 10/25

10:18 pm-6:30 pm

2 stops38h 12m

Bucharest Otopeni Intl

Sat 11/8

5:55 am-7:39 pm

2 stops20h 44m

$709

Washington, D.C.Bucharest

IAD - OTP

IADOTP

Washington, D.C. Dulles Intl

Wed 7/30

10:20 pm-6:35 pm

1 stop13h 15m

Bucharest Otopeni Intl

Wed 8/13

6:05 am-7:25 pm

1 stop20h 20m

$722

Washington, D.C.Bucharest

IAD - OTP

IADOTP

Washington, D.C. Dulles Intl

Tue 8/26

10:25 am-3:20 pm

2 stops21h 55m

Bucharest Otopeni Intl

Tue 9/9

6:00 am-9:05 pm

2 stops22h 05m

$732

Washington, D.C.Bucharest

IAD - OTP

IADOTP

Washington, D.C. Dulles Intl

Sat 10/25

5:50 pm-12:45 am

1 stop23h 55m

Bucharest Otopeni Intl

Sat 11/8

8:10 am-7:45 pm

1 stop18h 35m

$739

Washington, D.C.Bucharest

IAD - OTP

IADOTP

Washington, D.C. Dulles Intl

Wed 8/6

9:40 am-12:10 pm

2 stops19h 30m

Bucharest Otopeni Intl

Wed 9/10

7:00 am-5:56 pm

2 stops17h 56m

$752

Washington, D.C.Bucharest

IAD - OTP

IADOTP

Washington, D.C. Dulles Intl

Wed 7/23

8:45 pm-1:20 am

1 stop21h 35m

Bucharest Otopeni Intl

Thu 7/31

4:10 pm-4:15 pm

1 stop31h 05m

$788

Washington, D.C.Bucharest

IAD - OTP

IADOTP

Washington, D.C. Dulles Intl

Mon 5/19

10:40 pm-1:25 am

1 stop19h 45m

Bucharest Otopeni Intl

Mon 6/2

3:30 pm-3:50 pm

1 stop31h 20m

$811

Flights are sorted by cheapest round-trip flights first.

Deals found on 4/26

Showing 1-10 of 18 results
1
2

Compare providers for flights from Dulles Intl to Otopeni Intl

Provider information is updated monthly. Please note that these providers often have deals for this flight, but the availability may vary on a day-by-day basis on Cheapflights.
Use the table below to compare price accuracy, trust ratings, and cancellation policies for each provider offering flight deals from Dulles Intl to Otopeni Intl in April.
ProviderPrice AccuracyTrust Score*
FlightHubPrice Accuracy3 starsTrust Score*2 stars
ExpediaPrice Accuracy1 starTrust Score*3 stars
eDreamsPrice Accuracy3 starsTrust Score*3 stars
FareScanPrice Accuracy-Trust Score*3 stars
AranGrantPrice Accuracy3 starsTrust Score*3 stars
CheapfaremartPrice Accuracy-Trust Score*1 star

*The Trust Score is based on feedback from users after their booking experience. It measures overall satisfaction, helping us identify issues like hidden fees, problems during the ticketing process, and the quality of customer service. This score is our best indicator of the provider's quality and reliability.

  • Most accurate provider: When it comes to deals on Washington, D.C. Dulles Intl Airport-Bucharest Otopeni Intl Airport flights, users find the pricing of AranGrant to be most consistent on Cheapflights vs. AranGrant Users can find the same prices on Washington, D.C. Dulles Intl Airport-Bucharest Otopeni Intl Airport flight deals on Cheapflights vs. AranGrant >95% of the time. Price accuracy is based on data collected from Washington, D.C. Dulles Intl Airport-Bucharest Otopeni Intl Airport flight searches over the past month and is updated monthly.
  • Most trusted provider: When it comes to deals on Washington, D.C. Dulles Intl Airport-Bucharest Otopeni Intl Airport flights, Cheapflights users trust AranGrant the most. AranGrant has received a user feedback score of 3 out of 3 stars (3 being the best), meaning they have been trusted the most by Cheapflights users looking for Washington, D.C. Dulles Intl Airport-Bucharest Otopeni Intl Airport flight deals. Provider user feedback score is based on Cheapflights searches over the past month and is updated monthly.

Best time to book a flight from Dulles Intl to Otopeni Intl

Have a flexible travel schedule? Discover the best time to fly to Otopeni Intl from Dulles Intl with our price prediction graph.
Estimated round-trip price
Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.

Cheapflights Insights

Everything you need to know about your flight from Washington, D.C. Dulles Intl Airport to Bucharest Otopeni Intl Airport

How far ahead should I book a flight from Washington, D.C. Dulles Intl Airport to Bucharest Otopeni Intl Airport?

Use this chart to determine the optimal time to book a round-trip flight from Dulles Intl to Otopeni Intl. Price data was last updated on April 25, 2025.

The best time to book flights from Washington, D.C. Dulles Intl Airport to Bucharest Otopeni Intl Airport is 83 days before your desired departure date. The cost of your flight will likely increase significantly if you book two weeks in advance of your flight.

What is the cheapest month to book a flight from Washington, D.C. Dulles Intl Airport to Bucharest Otopeni Intl Airport?

Currently, November is the cheapest month in which you can book a flight from Washington, D.C. Dulles Intl Airport to Bucharest Otopeni Intl Airport (average of $604). Flying from Washington, D.C. Dulles Intl Airport to Bucharest Otopeni Intl Airport in June is currently the most expensive (average of $1,169). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

What is the cheapest time of day to fly from IAD to OTP?

Find hourly flight availability from Dulles Intl to Otopeni Intl. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated April 29, 2025.

It’s typically best to fly out from Washington, D.C. Dulles Intl Airport to Bucharest Otopeni Intl Airport at noon. Doing so could potentially save you 32% on the flight price compared to flying in the morning, which is usually more expensive.

Rainfall in Otopeni Intl by month

Plan your trip to Otopeni Intl by taking into account the average rainfall totals by month.

In terms of precipitation, rainfall in Bucharest Otopeni Intl Airport ranges from 0.8 - 3.1 inches per month. June is typically the wettest month, when rainfall can reach 3.1 in. October is typically the driest time to visit Bucharest Otopeni Intl Airport when rainfall is around 0.8 in.

Temperature in Otopeni Intl by month

Plan your trip to Otopeni Intl by taking into account the average temperature totals by month.

If weather is an important factor for your trip to Bucharest Otopeni Intl Airport, use this chart to help with planning. For those seeking warmer temperatures, July is the ideal time of year to visit, when temperatures reach an average of 71.6 F. Travelers looking to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 30.2 F).

Reviews of airlines servicing Otopeni Intl

Get insights into the airlines that provide service to Otopeni Intl. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to Otopeni Intl. Reviews last updated April 29, 2025.
Read reviews from past customers who have flown Emirates, Delta and Austrian Airlines from Washington, D.C. to Bucharest. In addition to providing an overall rating, users have also rated airlines in terms of entertainment options, comfort, food, crew/service, and boarding process.
Emirates
8.0
Very good
3,213 reviews

Overall

8.0

Crew

8.3

Entertainment

8.2

Boarding

8.1

Food

7.8

Comfort

8.0

Reviews

1 / 20
4.0
Okay

Anonymous,Dec 2024

IAD - DXB

Not so good. Flight was departed 2 hours late from DC and we missed our connecting flight from Dubai to Mumbai. Our flight Dubai to Mumbai got delayed by three hours. Once we arrived Bombay airport we didnot get all our luggage bags. We were missing two luggage bags so found out that our those two luggage bags are coming in different flight. First they gave us wrong flight information in which our missing luggage coming and wrong phone number to whom we should reach out. I spent hours and hours at the airport to find out our luggage bags. After four five hours later and hectic time at the airport to get our luggage bags. Overall poor communication with emirates staff at the airport and no one is helpful.
Emirates
8.0
Very good
3,213 reviews
Emirates
8.0
Very good
3,213 reviews

Overall

8.0

Crew

8.3

Entertainment

8.2

Boarding

8.1

Food

7.8

Comfort

8.0

Reviews

1 / 20
4.0
Okay

Anonymous,Dec 2024

IAD - DXB

Not so good. Flight was departed 2 hours late from DC and we missed our connecting flight from Dubai to Mumbai. Our flight Dubai to Mumbai got delayed by three hours. Once we arrived Bombay airport we didnot get all our luggage bags. We were missing two luggage bags so found out that our those two luggage bags are coming in different flight. First they gave us wrong flight information in which our missing luggage coming and wrong phone number to whom we should reach out. I spent hours and hours at the airport to find out our luggage bags. After four five hours later and hectic time at the airport to get our luggage bags. Overall poor communication with emirates staff at the airport and no one is helpful.
Delta
8.0
Very good
7,929 reviews
Emirates
8.0
Very good
3,213 reviews

Overall

8.0

Crew

8.3

Entertainment

8.2

Boarding

8.1

Food

7.8

Comfort

8.0

Reviews

1 / 20
4.0
Okay

Anonymous,Dec 2024

IAD - DXB

Not so good. Flight was departed 2 hours late from DC and we missed our connecting flight from Dubai to Mumbai. Our flight Dubai to Mumbai got delayed by three hours. Once we arrived Bombay airport we didnot get all our luggage bags. We were missing two luggage bags so found out that our those two luggage bags are coming in different flight. First they gave us wrong flight information in which our missing luggage coming and wrong phone number to whom we should reach out. I spent hours and hours at the airport to find out our luggage bags. After four five hours later and hectic time at the airport to get our luggage bags. Overall poor communication with emirates staff at the airport and no one is helpful.
Austrian Airlines
7.6
Good
780 reviews
Emirates
8.0
Very good
3,213 reviews

Overall

8.0

Crew

8.3

Entertainment

8.2

Boarding

8.1

Food

7.8

Comfort

8.0

Reviews

1 / 20
4.0
Okay

Anonymous,Dec 2024

IAD - DXB

Not so good. Flight was departed 2 hours late from DC and we missed our connecting flight from Dubai to Mumbai. Our flight Dubai to Mumbai got delayed by three hours. Once we arrived Bombay airport we didnot get all our luggage bags. We were missing two luggage bags so found out that our those two luggage bags are coming in different flight. First they gave us wrong flight information in which our missing luggage coming and wrong phone number to whom we should reach out. I spent hours and hours at the airport to find out our luggage bags. After four five hours later and hectic time at the airport to get our luggage bags. Overall poor communication with emirates staff at the airport and no one is helpful.
SWISS
7.5
Good
1,587 reviews
Emirates
8.0
Very good
3,213 reviews

Overall

8.0

Crew

8.3

Entertainment

8.2

Boarding

8.1

Food

7.8

Comfort

8.0

Reviews

1 / 20
4.0
Okay

Anonymous,Dec 2024

IAD - DXB

Not so good. Flight was departed 2 hours late from DC and we missed our connecting flight from Dubai to Mumbai. Our flight Dubai to Mumbai got delayed by three hours. Once we arrived Bombay airport we didnot get all our luggage bags. We were missing two luggage bags so found out that our those two luggage bags are coming in different flight. First they gave us wrong flight information in which our missing luggage coming and wrong phone number to whom we should reach out. I spent hours and hours at the airport to find out our luggage bags. After four five hours later and hectic time at the airport to get our luggage bags. Overall poor communication with emirates staff at the airport and no one is helpful.
United Airlines
7.4
Good
8,696 reviews
Emirates
8.0
Very good
3,213 reviews

Overall

8.0

Crew

8.3

Entertainment

8.2

Boarding

8.1

Food

7.8

Comfort

8.0

Reviews

1 / 20
4.0
Okay

Anonymous,Dec 2024

IAD - DXB

Not so good. Flight was departed 2 hours late from DC and we missed our connecting flight from Dubai to Mumbai. Our flight Dubai to Mumbai got delayed by three hours. Once we arrived Bombay airport we didnot get all our luggage bags. We were missing two luggage bags so found out that our those two luggage bags are coming in different flight. First they gave us wrong flight information in which our missing luggage coming and wrong phone number to whom we should reach out. I spent hours and hours at the airport to find out our luggage bags. After four five hours later and hectic time at the airport to get our luggage bags. Overall poor communication with emirates staff at the airport and no one is helpful.

Related info for your journey

Find useful and relevant information for your journey from Dulles Intl to Otopeni Intl. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • What are the cheapest airlines flying from Washington, D.C. Dulles Intl Airport to Bucharest Otopeni Intl Airport round-trip?

    Turkish Airlines, at $641, was found to be the cheapest airline from Washington, D.C. Dulles Intl Airport to Bucharest Otopeni Intl Airport.Alternate airlines to your destination round-trip include SWISS and Scandinavian Airlines. Turkish Airlines is currently priced 21% below the average price you’ll pay for this route.

  • What are the cheapest airlines to fly from Washington, D.C. Dulles Intl Airport to Bucharest Otopeni Intl Airport one-way?

    The cheapest airlines for a one-way flight from Washington, D.C. Dulles Intl Airport to Bucharest Otopeni Intl Airport are Turkish Airlines ($412), Air Canada ($553), and ITA Airways ($554).

  • Can I find deals for flights from Dulles Intl to Otopeni Intl that include hotel bookings?

    Yes. In addition to deals on Dulles Intl to Otopeni Intl flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from Dulles Intl to Otopeni Intl?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Dulles Intl to Otopeni Intl.

  • Can I find deals for business class flights from Dulles Intl to Otopeni Intl?

    Yes. Cheapflights offers flight deals from Dulles Intl to Otopeni Intl by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

  • What is the cheapest month to book a flight from Washington, D.C. Dulles Intl Airport to Bucharest Otopeni Intl Airport?

    Currently, November is the cheapest month in which you can book a flight from Washington, D.C. Dulles Intl Airport to Bucharest Otopeni Intl Airport (average of $604). Flying from Washington, D.C. Dulles Intl Airport to Bucharest Otopeni Intl Airport in June is currently the most expensive (average of $1,169). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

See more FAQs

Traveling to a place near Washington, D.C. Dulles Intl Airport?

Book flights to Washington, D.C. Dulles Intl Airport if you plan to visit one of these locations
Otopeni

Browse thousands of different options on Cheapflights for your next trip

Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.

Alternative routes for Dulles Intl to Otopeni Intl

See prices for flight routes from nearby airports that may be better suited for you.
Reagan-National to Otopeni Intl flights
Baltimore to Otopeni Intl flights

Top 10 airlines flying from Dulles Intl to Otopeni Intl

Discover the top 10 airlines that operate flights from Dulles Intl to Otopeni Intl. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated April 29, 2025.
AirlineCheapestAverageFlexibilityOn-time
KLMCheapest$495Average$811FlexibilityNo cancel feeOn-time75%
Turkish AirlinesCheapest$565Average$694FlexibilityNo cancel feeOn-time77%
DeltaCheapest$585Average$994FlexibilityNo cancel feeOn-timeN/A
Air FranceCheapest$599Average$978FlexibilityNo cancel feeOn-time77%
British AirwaysCheapest$650Average$866FlexibilityNo cancel feeOn-time70%
LufthansaCheapest$661Average$1,014FlexibilityNo cancel feeOn-time76%
United AirlinesCheapest$672Average$1,029FlexibilityNo cancel feeOn-time69%
Austrian AirlinesCheapest$761Average$1,054FlexibilityNo cancel feeOn-time78%
SWISSCheapest$784Average$893FlexibilityNo cancel feeOn-time79%
ITA AirwaysCheapest$887Average$980FlexibilityNo cancel feeOn-time81%

100% Free

Cheapflights is completely free to use, so you can start saving the moment you arrive.

Book with Flexibility

Our users can plan ahead with confidence and find flights with no change fees

Travel Smart

Millions of people come to us for their flight needs every year. We help make travel planning easy by providing useful insights and data-driven graphs that can inform your decisions.