HomeSearch by dateVacation packagesHotelsFlight dealsCar rentalTravel tips & news
Dulles Intl

$309+ Cheap flights from Otopeni Intl (OTP) to Dulles Intl (IAD)

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 2/9. Fares are subject to change and may not be available on all flights or dates of travel.
OTP — IAD
Dec 4 — Dec 111
Thu 12/4
Thu 12/11
1 adult, Economy
We work with more than 300 partners to bring you better travel deals

Find cheap flights from Otopeni Intl to Dulles 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 Bucharest Otopeni Intl to Washington, D.C. Dulles Intl are usually found in February or September, booked 83 days in advance, depart on a Thursday or Friday and return on a Tuesday

Cheap flight deals from Otopeni Intl to Dulles Intl

Discover tips and strategies to find the most affordable flight options for your journey from Otopeni Intl (OTP) to Dulles Intl (IAD). 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 November 4, 2025.

Most accurate provider

eDreams
3 stars

Most trusted provider

eDreams
3 stars

Round-trip from

$509
(Mytrip)

One-way from

$309
(British Airways)

Popular in

August

Cheapest in

February

Average price

$642
Provider with most accurate pricing for Bucharest Otopeni Intl-Washington, D.C. Dulles Intl flight deals.
Search Deals
Provider most trusted by Cheapflights users for Bucharest Otopeni Intl-Washington, D.C. Dulles Intl flights.
Search Deals
From Bucharest Otopeni Intl to Washington, D.C. Dulles Intl
Search Deals
One-way flight from Bucharest Otopeni Intl to Washington, D.C. Dulles Intl
Search Deals
Highest demand for flights based on searches. 5% potential increase in price ($38 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 3% potential price decrease ($22 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in November 2025
Search Deals

Find flight deals from Otopeni Intl to Dulles Intl

Cheapest flights from Otopeni Intl to Dulles Intl
Explore the most affordable flight options available from Otopeni Intl to Dulles Intl. Find the lowest fares from popular airlines and budget airlines, with prices last updated on November 4, 2025.

This Kiwi.com deal was found by Cheapflights users on 11/2. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 11/205:50 amOTP - IAD
1 stop17h 00mMultiple Airlines
Thu 12/48:30 pmIAD - OTP
1 stop12h 20mMultiple Airlines
Deal found 11/2$502
This Mytrip deal was found by Cheapflights users on 11/4. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 11/215:55 amOTP - IAD
1 stop16h 55mLufthansa
Sun 12/76:00 pmIAD - OTP
1 stop13h 05mLufthansa
Deal found 11/4$509
This Mytrip deal was found by Cheapflights users on 11/3. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 12/115:50 amOTP - IAD
1 stop17h 00mLufthansa
Sat 12/2710:55 pmIAD - OTP
1 stop19h 10mLufthansa
Deal found 11/3$512
This Lufthansa deal was found by Cheapflights users on 11/3. 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.
Sun 11/235:55 amOTP - IAD
1 stop15h 40mLufthansa
Sun 12/75:40 pmIAD - OTP
1 stop11h 40mLufthansa
Deal found 11/3$513
This United Airlines deal was found by Cheapflights users on 11/4. 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.
Thu 11/205:50 amOTP - IAD
1 stop15h 45mUnited Airlines
Thu 12/410:00 pmIAD - OTP
1 stop18h 50mUnited Airlines
Deal found 11/4$515
This Mytrip deal was found by Cheapflights users on 11/1. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 11/175:55 amOTP - IAD
2 stops40h 51mMultiple Airlines
Tue 12/28:30 pmIAD - OTP
1 stop12h 15mMultiple Airlines
Deal found 11/1$516
This United Airlines deal was found by Cheapflights users on 11/3. 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.
Mon 11/245:55 amOTP - IAD
2 stops21h 59mUnited Airlines
Mon 12/16:00 pmIAD - OTP
1 stop13h 05mUnited Airlines
Deal found 11/3$518
This KLM deal was found by Cheapflights users on 11/3. 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 KLM is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 11/194:50 pmOTP - IAD
1 stop30h 15mMultiple Airlines
Sun 11/236:50 pmIAD - OTP
1 stop21h 00mMultiple Airlines
Deal found 11/3$519
This Air Canada deal was found by Cheapflights users on 11/3. 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 Air Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 11/235:55 amOTP - IAD
2 stops17h 26mAir Canada
Sun 12/79:00 amIAD - OTP
2 stops22h 05mAir Canada
Deal found 11/3$522
This Air Canada deal was found by Cheapflights users on 11/4. 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 Air Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 11/215:55 amOTP - IAD
2 stops17h 32mAir Canada
Sun 12/79:00 amIAD - OTP
2 stops22h 05mAir Canada
Deal found 11/4$528
This Delta deal was found by Cheapflights users on 11/3. 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 11/191:55 pmOTP - IAD
2 stops17h 21mDelta
Sun 11/236:05 pmIAD - OTP
1 stop16h 05mDelta
Deal found 11/3$531
This United Airlines deal was found by Cheapflights users on 11/4. 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.
Tue 12/25:55 amOTP - IAD
2 stops36h 28mUnited Airlines
Tue 6/3010:20 pmIAD - OTP
1 stop30h 35mUnited Airlines
Deal found 11/4$533

Cheapflights Fare Finder

 
Customize your flight search to find flights from Otopeni Intl to Dulles 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 November 4, 2025.
Use the filters below to find and compare flights from Bucharest Otopeni Intl Airport to Washington, D.C. Dulles Intl Airport that are best for you.

Fly from

Otopeni Intl

Fly to

Dulles Intl

Route

Depart

Return

Price

BucharestWashington, D.C.

OTP - IAD

OTPIAD

Bucharest Otopeni Intl

Thu 11/20

5:50 am-3:50 pm

1 stop17h 00m

Washington, D.C. Dulles Intl

Thu 12/4

8:30 pm-3:50 pm

1 stop12h 20m

$502

BucharestWashington, D.C.

OTP - IAD

OTPIAD

Bucharest Otopeni Intl

Fri 11/21

5:55 am-3:50 pm

1 stop16h 55m

Washington, D.C. Dulles Intl

Sun 12/7

10:55 pm-1:05 am

1 stop19h 10m

$509

BucharestWashington, D.C.

OTP - IAD

OTPIAD

Bucharest Otopeni Intl

Sun 11/23

5:55 am-2:35 pm

1 stop15h 40m

Washington, D.C. Dulles Intl

Sun 12/7

5:40 pm-12:20 pm

1 stop11h 40m

$513

BucharestWashington, D.C.

OTP - IAD

OTPIAD

Bucharest Otopeni Intl

Sun 11/23

5:55 am-4:21 pm

2 stops17h 26m

Washington, D.C. Dulles Intl

Sun 12/7

6:00 pm-2:05 pm

1 stop13h 05m

$515

BucharestWashington, D.C.

OTP - IAD

OTPIAD

Bucharest Otopeni Intl

Mon 11/17

4:40 pm-4:40 pm

1 stop31h 00m

Washington, D.C. Dulles Intl

Tue 12/2

8:30 pm-12:30 am

1 stop21h 00m

$515

BucharestWashington, D.C.

OTP - IAD

OTPIAD

Bucharest Otopeni Intl

Thu 11/20

5:50 am-4:21 pm

2 stops17h 31m

Washington, D.C. Dulles Intl

Thu 12/4

10:00 pm-11:50 pm

1 stop18h 50m

$515

BucharestWashington, D.C.

OTP - IAD

OTPIAD

Bucharest Otopeni Intl

Thu 11/20

5:50 am-3:50 pm

1 stop17h 00m

Washington, D.C. Dulles Intl

Thu 12/4

10:00 pm-11:50 pm

1 stop18h 50m

$515

BucharestWashington, D.C.

OTP - IAD

OTPIAD

Bucharest Otopeni Intl

Fri 11/21

5:55 am-2:35 pm

1 stop15h 40m

Washington, D.C. Dulles Intl

Sun 12/7

10:00 pm-11:50 pm

1 stop18h 50m

$515

BucharestWashington, D.C.

OTP - IAD

OTPIAD

Bucharest Otopeni Intl

Mon 2/9

8:05 am-11:12 pm

2 stops22h 07m

$309

BucharestWashington, D.C.

OTP - IAD

OTPIAD

Bucharest Otopeni Intl

Mon 2/9

8:05 am-11:12 pm

2 stops22h 07m

$312

Flights are sorted by cheapest round-trip flights first.

Deals found on 11/2

Showing 1-10 of 13 results
1
2

Compare providers for flights from Otopeni Intl to Dulles 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 Otopeni Intl to Dulles Intl in November.
ProviderPrice AccuracyTrust Score*
eDreamsPrice Accuracy3 starsTrust Score*3 stars
ExpediaPrice Accuracy2 starsTrust Score*3 stars
FlightHubPrice Accuracy3 starsTrust Score*1 star
PricelinePrice Accuracy1 starTrust Score*3 stars

*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 Bucharest Otopeni Intl Airport-Washington, D.C. Dulles Intl Airport flights, users find the pricing of eDreams to be most consistent on Cheapflights vs. eDreams Users can find the same prices on Bucharest Otopeni Intl Airport-Washington, D.C. Dulles Intl Airport flight deals on Cheapflights vs. eDreams >95% of the time. Price accuracy is based on data collected from Bucharest Otopeni Intl Airport-Washington, D.C. Dulles Intl Airport flight searches over the past month and is updated monthly.
  • Most trusted provider: When it comes to deals on Bucharest Otopeni Intl Airport-Washington, D.C. Dulles Intl Airport flights, Cheapflights users trust eDreams the most. eDreams 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 Bucharest Otopeni Intl Airport-Washington, D.C. Dulles 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 Otopeni Intl to Dulles Intl

Have a flexible travel schedule? Discover the best time to fly to Dulles Intl from Otopeni 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 Bucharest Otopeni Intl Airport to Washington, D.C. Dulles Intl Airport

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

Use this chart to determine the optimal time to book a round-trip flight from Otopeni Intl to Dulles Intl. Price data was last updated on October 31, 2025.

To ensure you get the cheapest price possible for a flight from Bucharest Otopeni Intl Airport to Washington, D.C. Dulles Intl Airport, you should look to book at least 83 days in advance of your intended travel date. The price of your flight may increase if you delay and leave booking until a week or so before departure.

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

Currently, May is the cheapest month in which you can book a flight from Bucharest Otopeni Intl Airport to Washington, D.C. Dulles Intl Airport (average of $418). Flying from Bucharest Otopeni Intl Airport to Washington, D.C. Dulles Intl Airport in August is currently the most expensive (average of $630). 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 OTP to IAD?

Find hourly flight availability from Otopeni Intl to Dulles Intl. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated November 4, 2025.

One of the essential ways to save on airfare from Bucharest Otopeni Intl Airport to Washington, D.C. Dulles Intl Airport is to remain as flexible as possible. Flights that are in the evening tend to be the most expensive. A flight in the afternoon could potentially save you up to 50% on airfare.

How much does it cost to fly round-trip from Bucharest Otopeni Intl Airport to Washington, D.C. Dulles Intl Airport?

Reviews of airlines servicing Dulles Intl

Get insights into the airlines that provide service to Dulles 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 Dulles Intl. Reviews last updated November 4, 2025.
See what other customers who have flown with KLM, Austrian Airlines, and Turkish Airlines from Bucharest Otopeni Intl Airport to Washington, D.C. Dulles Intl Airport have to say. You can also see how each airline compares in terms of entertainment options, comfort, food, crew/service, and boarding process.
KLM
7.7
Good
1,405 reviews

Boarding

7.8

Comfort

7.7

Food

7.3

Overall

7.7

Entertainment

7.1

Crew

8.4

Reviews

1 / 20
2.0
Mediocre

Abisola,Oct 2025

LOS - CDG

The food option was finished and what wa left was vegan pasta so I had to go without food for an 8 hour flight without any sort of empathy from crew that was mean.
KLM
7.7
Good
1,405 reviews
KLM
7.7
Good
1,405 reviews

Boarding

7.8

Comfort

7.7

Food

7.3

Overall

7.7

Entertainment

7.1

Crew

8.4

Reviews

1 / 20
2.0
Mediocre

Abisola,Oct 2025

LOS - CDG

The food option was finished and what wa left was vegan pasta so I had to go without food for an 8 hour flight without any sort of empathy from crew that was mean.
Austrian Airlines
7.6
Good
864 reviews
KLM
7.7
Good
1,405 reviews

Boarding

7.8

Comfort

7.7

Food

7.3

Overall

7.7

Entertainment

7.1

Crew

8.4

Reviews

1 / 20
2.0
Mediocre

Abisola,Oct 2025

LOS - CDG

The food option was finished and what wa left was vegan pasta so I had to go without food for an 8 hour flight without any sort of empathy from crew that was mean.
Turkish Airlines
7.3
Good
4,035 reviews
KLM
7.7
Good
1,405 reviews

Boarding

7.8

Comfort

7.7

Food

7.3

Overall

7.7

Entertainment

7.1

Crew

8.4

Reviews

1 / 20
2.0
Mediocre

Abisola,Oct 2025

LOS - CDG

The food option was finished and what wa left was vegan pasta so I had to go without food for an 8 hour flight without any sort of empathy from crew that was mean.
Lufthansa
6.8
Okay
7,553 reviews
KLM
7.7
Good
1,405 reviews

Boarding

7.8

Comfort

7.7

Food

7.3

Overall

7.7

Entertainment

7.1

Crew

8.4

Reviews

1 / 20
2.0
Mediocre

Abisola,Oct 2025

LOS - CDG

The food option was finished and what wa left was vegan pasta so I had to go without food for an 8 hour flight without any sort of empathy from crew that was mean.
British Airways
6.7
Okay
7,495 reviews
KLM
7.7
Good
1,405 reviews

Boarding

7.8

Comfort

7.7

Food

7.3

Overall

7.7

Entertainment

7.1

Crew

8.4

Reviews

1 / 20
2.0
Mediocre

Abisola,Oct 2025

LOS - CDG

The food option was finished and what wa left was vegan pasta so I had to go without food for an 8 hour flight without any sort of empathy from crew that was mean.

Related info for your journey

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

  • How long is the flight from Bucharest Otopeni Intl Airport to Washington, D.C. Dulles Intl Airport?

    There are many flights that can get you from Bucharest Otopeni Intl Airport to Washington, D.C. Dulles Intl Airport in 16h 55m. Fly via Lufthansa to get the fastest option. Airlines will cover a distance of 4962 mi.

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

    Cheapflights users have booked flights from Bucharest Otopeni Intl Airport to Washington, D.C. Dulles Intl Airport round-trip from $418. Other airlines that can offer you cheap pricing are Air France, from $448, and British Airways, from $461. United Airlines is currently priced 34% below the average price you’ll pay for this route.

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

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

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

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

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

    Yes. Cheapflights offers flight deals from Otopeni Intl to Dulles 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 Bucharest Otopeni Intl Airport to Washington, D.C. Dulles Intl Airport?

    Currently, May is the cheapest month in which you can book a flight from Bucharest Otopeni Intl Airport to Washington, D.C. Dulles Intl Airport (average of $418). Flying from Bucharest Otopeni Intl Airport to Washington, D.C. Dulles Intl Airport in August is currently the most expensive (average of $630). 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
Alexandria
Tysons
Woodbridge
Arlington
Owings Mills
Springfield
Hanover
Silver Spring
Fairfax
Fredericksburg
Falls Church
Linthicum Heights
Manassas
Laurel
Towson
National Harbor
Waldorf
Bowie
Largo
McLean

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 Otopeni Intl to Dulles Intl

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

Top 7 airlines flying from Otopeni Intl to Dulles Intl

Discover the top 7 airlines that operate flights from Otopeni Intl to Dulles 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 November 4, 2025.
AirlineCheapestAverageFlexibilityOn-time
United AirlinesCheapest$418Average$638FlexibilityNo cancel feeOn-time69%
Air FranceCheapest$448Average$769FlexibilityNo cancel feeOn-time77%
British AirwaysCheapest$461Average$622FlexibilityNo cancel feeOn-time70%
Austrian AirlinesCheapest$462Average$610FlexibilityNo cancel feeOn-time78%
LufthansaCheapest$489Average$747FlexibilityNo cancel feeOn-time76%
KLMCheapest$528Average$672FlexibilityNo cancel feeOn-time75%
Turkish AirlinesCheapest$559Average$619FlexibilityNo cancel feeOn-time77%

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.